Patent Publication Number: US-10321925-B2

Title: Clot retrieval system

Description:
RELATED APPLICATIONS 
     This application is a continuation-in-part of U.S. patent application Ser. No. 15/995,901, filed Jun. 1, 2018, entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/880,936, filed Jan. 26, 2018, which is a continuation of U.S. patent application Ser. No. 15/852,285, filed Dec. 22, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/710,648, filed Sep. 20, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/629,703, filed Jun. 21, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/611,762, filed Jun. 1, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/610,209, filed May 31, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/449,901 filed Mar. 3, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/417,505, filed Jan. 27, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 15/374,307, filed Dec. 9, 2016 and entitled CATHETER-DELIVERED ENDOVASCULAR DEVICES, which is a continuation-in-part of U.S. patent application Ser. No. 15/158,137, filed May 18, 2016 and entitled METHOD OF MANUFACTURING A CATHETER-DELIVERED MEDICAL DEVICE FROM A TUBE, which is a continuation-in-part of U.S. patent application Ser. No. 14/794,783, filed Jul. 8, 2015 and entitled “CLOT RETRIEVAL SYSTEM”), which is continuation-in-part of U.S. patent application Ser. No. 14/558,712 (now U.S. Pat. No. 9,155,552), filed Dec. 2, 2014 and entitled “CLOT RETRIEVAL SYSTEM, which is a continuation of U.S. patent application Ser. No. 14/558,705 (now U.S. Pat. No. 9,173,668), filed Dec. 2, 2014 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation-in-part of U.S. patent application Ser. No. 14/147,491 (now U.S. Pat. No. 8,900,265), entitled “CLOT RETRIEVAL SYSTEM” and filed Jan. 3, 2014. U.S. patent application Ser. No. 14/558,705 further claims priority under 35 U.S.C. § 119 to U.S. Provisional Patent Application Ser. No. 61/994,934, filed May 18, 2014 and entitled “ARTICULATING CLOT RETRIEVAL SYSTEM”. The entire contents of all of the above patent applications are hereby incorporated by reference. 
     U.S. patent application Ser. No. 14/794,783 is also a continuation-in-part of International Patent Application No. PCT/US15/10178, entitled “CLOT RETRIEVAL SYSTEM” and filed Jan. 5, 2015, which is a continuation-in-part of U.S. patent application Ser. No. 14/558,712 (now U.S. Pat. No. 9,155,552), filed Dec. 2, 2014 and entitled “CLOT RETRIEVAL SYSTEM”, which is a continuation of U.S. patent application Ser. No. 14/558,705 (now U.S. Pat. No. 9,173,668), filed Dec. 2, 2014 and entitled “CLOT RETRIEVAL SYSTEM.” U.S. patent application Ser. No. 14/558,705 (now U.S. Pat. No. 9,173,668) is a continuation-in-part of U.S. patent application Ser. No. 14/147,491 (now U.S. Pat. No. 8,900,265), entitled “CLOT RETRIEVAL SYSTEM” and filed Jan. 3, 2014, and further claims priority under 35 U.S.C. § 119 to U.S. Provisional Patent Application Ser. No. 61/994,934, filed May 18, 2014 and entitled “ARTICULATING CLOT RETRIEVAL SYSTEM”. International Patent Application No. PCT/US15/10178 further claims priority under 35 U.S.C. § 119 to U.S. Patent Application No. 61/994,919, filed May 18, 2014 and entitled “CLOT RETRIEVAL SYSTEM.” The entire contents of all of the above patent applications are hereby incorporated by reference. 
     U.S. patent application Ser. No. 14/794,783 is also a continuation-in-part of International Patent Application No. PCT/US15/31447, entitled “CLOT RETRIEVAL SYSTEM” and filed May 18, 2015. The entire contents of all of the above patent applications are hereby incorporated by reference. 
     U.S. patent application Ser. No. 15/158,137 also is a continuation-in-part of International Patent Application No. PCT/US15/39830, entitled “CLOT RETRIEVAL SYSTEM” and filed Jul. 9, 2015, which is incorporated herein by reference in its entirety. 
     U.S. patent application Ser. No. 15/852,285 also claims priority under 35 USC 119 to U.S. provisional application No. 62/571,213, filed Oct. 11, 2017 and entitled “CLOT RETRIEVAL SYSTEM”, which is incorporated by reference in its entirety. 
    
    
     BACKGROUND 
     Technical Field 
     The present invention relates to a deployable system for removing a blood clot or other object from a lumen of an animal as well as to methods of manufacturing catheter-delivered medical devices from a tube of a memory metal. 
     BACKGROUND OF THE INVENTION 
     Acute ischemic strokes develop when a blood clot (thrombus) blocks an artery supplying blood to the brain. Needless to say, when a blood clot creates such a blockage, time in removing the clot is critical. 
     The removal of intracranial obstructions is limited by several factors, such as the distance of the intracranial obstruction from the femoral access site, the tortuosity (twists and turns in the artery as it enters the base of the skull) of the cervical and proximal intracranial vasculature, the small size of the vessels and the extremely thin walls of intracranial vessels, which lack a significant muscular layer. These limitations require a device to be small and flexible enough to navigate through tortuous vessels within a guide catheter and microcatheter, expand after delivery at the site of occlusion and be retrievable into the microcatheter and yet be strong enough to dislodge strongly adherent thrombus from the vessel wall. In addition, the device should distally entrap or encase the thrombus to prevent embolization to other vessels and to completely remove the occlusion. The device should be retrievable without the need for proximal occlusion of the vessel, which carries risk of further ischemia and risk of vessel injury. The device should be simple to use and be capable of multi-use within the same patient treatment. The device should not be abrasive and should not have sharp corners exposed to the endothelial layer of the vessel wall. 
     Currently available intravascular thrombus and foreign body removal devices lack several of these features. Currently available devices include the MERCI™ RETRIEVER clot retriever device marketed by Concentric Medical, Inc. (Mountainview, Calif.), the PENUMBRA™ system marketed by Penumbra Inc. (Alameda, Calif.) to retrieve clots, and the newer stent retrieval devices TREVO™ (Stryker, Kalamazoo, Mich.) and SOLITAIRE™ (eV3 Endovascular Inc., Plymouth, Mass., which is a subsidiary of Covidien). All the devices are ineffectual at removing organized hard thrombus that embolize to the brain from the heart and from atherosclerotic proximal vessels. These “hard” thrombi constitute the majority of strokes which are refractory to medical treatment and are therefore referred for removal by mechanical means through an endovascular approach. The MERCI retrieval system is comprised of coiled spring-like metal and associated suture material. The method of use is deployment distal to the thrombus and by withdrawing the device through the thrombus, the thrombus becomes entangled in the coil and mesh and then is retrieved. The MERCI system requires occlusion of the proximal vessel with a balloon catheter and simultaneous aspiration of blood while the thrombus is being removed. Most of the time, the device fails to dislodge the thrombus from the wall of the vessel and often, even when successfully dislodging the thrombus, the thrombus embolizes into another or the same vessel due to the open ended nature of the device. 
     The next attempt at a thrombus removal system was the PENUMBRA. The PENUMBRA is a suction catheter with a separator that macerates the thrombus which is then removed by suction. The device is ineffective at removing hard, organized thrombus which has embolized from the heart, cholesterol plaque from proximal feeding arteries and other foreign bodies. 
     The SOLITAIRE and TREVO systems are self-expanding non-detachable stents. The devices are delivered across the thrombus which is then supposed to become entwined in the mesh of the stent and which is then removed in a manner similar to the MERCI system. Again, these devices are ineffectual at treating hard thrombus. In fact, the thrombus is often compressed against the vessel wall by the stent which temporarily opens the vessel by outwardly pressing the clot against the vessel wall. Upon retrieval of the devices, the clot remains or is broken up into several pieces which embolize to vessels further along the vessel. 
     Thus, there is a need for new, easy-to-use, easy-to-manufacture, safe surgical devices for removing obstructions, such as blood clots, from internal lumens of humans and other animals in a timely manner. 
     In addition, it may be desirable to make memory-metal based mechanical thrombectomy devices, also referred to in the art as stent retrievers, from a single tube of the memory-metal (e.g., nitinol), and in the process, laser cut and shape set the middle portion to form the capture portion (e.g., the basket) and leave the proximal and distal ends at least partially intact. To provide design flexibility to the designer of the basket (so that he/she may include complicated structure in the middle portion), it is desirable that the single tube have a relatively large diameter. However, it is also desirable to allow the devices to fit into a small catheter (called a microcatheter), which creates issues if the proximal and distal ends remain on the device. Thus, there is a need for processes of making devices that have the advantages of being cut from a larger diameter tube but are also able to fit inside a small catheter. 
     BRIEF SUMMARY 
     The present disclosure provides several systems for removing obstructions and other objects within a blood vessel or other lumen of an animal. The system may be deployed in the lumen from a distal end of a catheter and, in some embodiments, includes a pull wire having a proximal end and a distal end; a distal body attached to the pull wire, the distal body comprising an interior, an exterior, a proximal end, a distal end, a plurality of proximal memory metal strips located at the proximal end, a proximal hub/junction located in the distal body interior, and a distal hub/junction located distal relative to the proximal hub/junction. The distal body has a relaxed state wherein the distal body has a first height and width and a collapsed state wherein the distal body has a second height and width, the second height less than said first height, the second width less than the first width. The system further includes a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Each of the proximal memory metal strips has a proximal end and a distal end and preferably, in the relaxed state, each of the proximal ends of the proximal memory metal strips is located proximal relative to the proximal hub/junction. Preferably, in the relaxed state, the proximal ends of the proximal memory metal strips are configured to move towards each other and towards the pull wire when an operator moves the proximal hub/junction distally and closer to the stationary distal hub/junction (i.e., when the operator decreases the distance between the hubs/junctions). Preferably, in the relaxed state, the proximal ends of the proximal memory metal strips are configured to move away from each other and away from the pull wire by moving the proximal hub/junction proximally away from the stationary distal hub/junction (i.e., when the operator increases the distance between the hubs/junctions). 
     Optionally, the system further includes a plurality of memory metal connector strips, the plurality of memory metal connector strips each having a proximal end attached to a proximal memory metal strip and a distal end attached to the proximal hub/junction. Optionally, the connector strips are integral with the proximal hub/junction (i.e., optionally, the connector strips and the proximal hub/junction are formed from the same piece of memory metal). Optionally, the proximal hub/junction is a tube having an aperture and the pull wire passes through the aperture. Optionally, in the relaxed state, the proximal hub/junction is slideable along the pull wire (i.e., at least a segment of the pull wire). Optionally, in the relaxed state, the proximal memory metal strips are distributed substantially evenly about a perimeter of the distal body. Optionally, the distal hub/junction is a tube having an aperture. Optionally, the distal hub/junction is attached to the pull wire such that the distal hub/junction is not slideable along the pull wire. Optionally, the distal body further comprises a lead wire extending distally from the distal hub/junction. Optionally, the distal body comprises a basket comprised of a plurality of memory metal strips distal relative to the proximal memory metal strips. Optionally, the distal hub/junction, the proximal hub/junction, and the distal basket are comprised of a nitinol having the same material composition. Optionally, the distal body further comprises an x-ray marker. Optionally, the proximal memory metal strips form a claw, the claw having a closeable proximal end formed by the proximal ends of the proximal memory metal strips. Optionally, between 2 and 4 proximal memory metal strips form the claw. Optionally, the distal body, in the relaxed state, has a tapered shape in which the distal body height and width decrease from the proximal end to the distal end. Optionally, the distal body, in the relaxed state, has a bullet shape. Optionally, the proximal hub/junction and the distal hub/junction are generally cylindrical in shape and each has an outer diameter and an inner diameter that forms the apertures of the proximal and distal hub/junctions, the outer diameters of the proximal and distal hub/junctions are substantially the same size, and the inner diameters of the proximal and distal hubs/junctions are substantially the same size. Optionally, the outer diameters of the proximal and distal hubs/junctions are from about 0.011 inches to about 0.054 inches, and the inner diameters of the proximal and distal hubs are from about 0.008 inches to about 0.051 inches. Optionally, the pull wire is generally cylindrical and the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the proximal memory metal strips have a length of between about 10 and about 60 millimeters. Optionally, the first height and first width of the distal body are between about 2 millimeters (mm) and about 6 millimeters. Optionally, the proximal memory metal strips are configured to a separate a clot from a blood vessel wall. 
     The present invention also provides a method of removing an object from an interior lumen of an animal, the lumen having an interior wall forming the lumen. In some embodiments, the method includes: 
     a) providing a system comprising: i) a pull wire having a proximal end and a distal end; ii) a distal body attached to the pull wire, the distal body comprising a proximal end, a distal end, and a claw, the claw comprised of a plurality of memory metal strips, the distal body having a relaxed state wherein the distal body has a first height and width and a collapsed state wherein the distal body has a second height and width, the second height less than said first height, the second width less than said first width; and iii) a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when said distal body is in said collapsed state; 
     b) positioning the system in the lumen; 
     c) deploying the distal body from the distal end of the catheter; 
     d) allowing the height and width of said distal body to increase; and 
     e) moving the memory metal strips towards each other and the pull wire so as to capture the obstruction. Optionally, the claw and the memory metal strips are located at the proximal end of said distal body and the distal body is deployed distal to said object. Optionally, the proximal memory metal strips have a proximal end forming the proximal end of the claw and a distal end, and the method includes moving the proximal ends of the memory metal strips towards each other and the pull wire so as to capture the obstruction. Optionally, the distal body further comprises a proximal hub/junction located in the distal body interior, and a distal hub/junction located distal relative to the proximal hub/junction, each of the memory metal strips has a proximal end and a distal end, each of the proximal ends of the memory metal strips is located proximal relative to the proximal hub/junction, and the proximal ends of the memory metal strips are configured to move towards each other and towards the pull wire by moving the proximal hub/junction distally and closer to the distal hub/junction, and the proximal ends of the memory metal strips are configured to move away from each other and away from the pull wire by moving the proximal hub/junction proximally and away from the distal hub/junction, and the method further comprises moving the proximal hub/junction distally and closer to the distal hub/junction so as to capture the obstruction in the claw. Optionally, the interior lumen is an intracranial artery and the obstruction is a blood clot. Optionally, the method further comprises using the clot to move the proximal hub/junction toward the distal hub/junction and exert tension on the proximal memory metal strips. Optionally, the method further comprises using a tube to move the proximal hub/junction toward the distal hub/junction and exert tension on the proximal memory metal strips. 
     The present invention also provides a method of manufacturing a system for removing objects within an interior lumen of an animal. In some embodiments, the method includes: 
     a) providing a single tube comprised of a memory metal, the single tube having an exterior, a hollow interior, a wall separating the exterior from the hollow interior, a proximal portion comprising an aperture leading to the hollow interior, a distal portion comprising an aperture leading to the hollow interior, and a middle portion between the proximal portion and the distal portion; 
     b) cutting the wall of the middle portion with a laser; 
     c) removing the pieces of the middle portion cut by the laser to form a proximal tube, a middle portion comprising a plurality of memory metal strips attached to the proximal tube and a distal tube; 
     d) altering the shape of the middle portion; 
     e) allowing the middle portion to expand relative to the distal tube and the proximal tube; 
     f) cutting the memory metal strips to form a first segment comprising the proximal tube and a proximal segment of the memory metal strips, and a second segment comprising the distal tube and a distal segment of the memory metal strips; and 
     g) joining the proximal segments to the distal segments such that the distal segments form the proximal end of a distal body, such that the proximal tube is located inside an interior of said distal body, and such that the proximal tube is located distal relative to the proximal end. 
     Optionally, the method further includes placing a pull wire through the proximal tube such that the proximal tube is slideable along at least a segment of the pull wire. Optionally, the method further includes attaching the pull wire to the distal tube. Optionally, the step of joining the proximal segments to the distal segments comprises welding or soldering the proximal segments to the distal segments. Optionally, after the step of joining the proximal segments to the distal segments, the proximal end forms a claw comprised of between 2 and 4 memory metal strips, the claw memory metal strips configured to move towards each by moving said proximal tube distally and closer to the distal tube, and the claw memory metal strips configured to move away from each other by moving the proximal tube proximally and away from said distal tube. Optionally, the method further includes not altering the shape of the proximal and distal portions while altering the shape of the middle portion. Optionally, the method further includes cooling the proximal portion, the middle portion, and the distal portion after step D) and, after cooling, the proximal and distal portions have substantially the same size as the proximal and distal portions had prior to step A). Optionally, the method of allowing said middle portion to expand comprises heating the middle portion. Optionally, the method of altering the shape of the middle portion comprises using a mandrel. Optionally, the mandrel is tapered. Optionally, the proximal portion and the distal portion are not cut by the laser. Optionally, prior to cutting the memory metal tube, the memory metal tube has an outer diameter that is from about 0.011 inches to about 0.054 inches and an inner diameter that is from about 0.008 inches to about 0.051 inches. 
     In an alternate embodiment, the present disclosure provides a system for removing objects from an interior lumen of an animal that includes: 
     a pull wire having a proximal end and a distal end; 
     a distal body attached to the pull wire, the distal body comprising an interior, a proximal end, a distal end, a distal body length extending from the proximal end to the distal end, a proximal hub/junction (preferably in the form of a tube) forming the proximal end of the distal body, a basket comprised of a plurality of cells formed by a plurality of basket strips, a plurality of proximal strips, and, optionally a distal hub/junction (preferably in the form of a tube) forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a proximal end attached to the proximal hub/junction, and a distal end attached to a cell, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width; and
 
a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state,
 
wherein, in the relaxed state, the basket comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the first pair of distal crowns located approximately the same distance from the proximal hub/junction and approximately 180 degrees relative to each other (e.g., between about 150 degrees and about 180 degrees relative to each other), and further wherein the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to, and approximately 90 degrees relative to, the first pair of distal crowns (e.g., each distal crown of the second pair of distal crowns is located approximately 60 degrees to 90 degrees relative to a distal crown of the first pair of distal crowns), the distal crowns in the second pair of distal crowns located approximately the same distance from the proximal hub/junction and further wherein each of the distal crowns in the first and second pair of distal crowns comprises an x-ray marker, the x-ray maker more visible under x-ray as compared to the basket strips when the distal body is located in a cranial blood vessel inside the body of a human and the x-ray is taken from outside the human&#39;s body. When it is said that the first pair of distal crowns are located approximately the same distance from the proximal hub/junction, it will be understood that if one of the first pair of distal crowns is located X distance from the proximal hub/junction, the other of the first pair of distal crowns is located X distance plus or minus (+/−) 3 mm from the proximal hub/junction, more preferably X distance plus or minus (+/−) 0.5 mm from the proximal hub/junction. Similarly, when it is said that the second pair of distal crowns are located approximately the same distance from the proximal hub/junction, it will be understood that if one of the second pair of distal crowns is located Y distance from the proximal hub/junction, the other of the first pair of distal crowns is located Y distance plus or minus (+/−) 3 mm from the proximal hub/junction, more preferably Y distance plus or minus (+/−) 0.5 mm from the proximal hub/junction. Optionally, instead of a distal hub/junction, the basket includes an open distal end.
 
     Optionally, the x-ray markers are comprised of a material different than the material forming the basket strips. Optionally, in the relaxed state, the basket interior is substantially hollow. Optionally, in the relaxed state, the distal body does not have another x-ray marker that is located approximately the same distance from the proximal hub/junction as the first pair of x-ray markers and the distal body does not have another x-ray marker that is located approximately the same distance from the proximal hub/junction as the second pair of x-ray markers. In other words, the first and second pair of x-ray markers are the only markers their respective distances from the proximal hub/junction. Optionally, each distal crown in the first and second pair of distal crowns forms part of an enlarged cell and further wherein the surface area of each enlarged cell in the relaxed state is greater than the surface area of each of the other individual cells of the basket and further wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, in the relaxed state, the distal body does not have another free distal-pointing crown that is located approximately the same distance from the proximal hub/junction as the first pair of distal crowns and the distal body does not have another free distal-pointing crown that is located approximately the same distance from the proximal hub/junction as the second pair of distal crowns. Optionally, the basket strips are comprised of a memory metal. Optionally, each of the distal crowns in the first pair and second pair of distal crowns curve radially inward toward the basket interior in the relaxed state, wherein the distal crowns of the first pair of distal crowns are configured to contact each other when an exterior, external compressive force (such as a thrombus) is exerted on a distal crown of the first pair of distal crowns when the distal body is in the relaxed state, and further wherein the distal crowns of the second pair of distal crowns are configured to contact each other when an exterior, external compressive force (such as a thrombus) is exerted on a distal crown of the second pair of distal crowns when the distal body is in the relaxed state. Optionally, the proximal hub/junction is located approximately in the center of the first height and first width in the relaxed state. For example, preferably the proximal hub/junction is located within 0.5 mm of the center of first width and the first height. Optionally, the catheter is comprised of a polymeric material (i.e., one or more polymeric materials such as silicone, PVC, latex rubber or braided nylon). Optionally, the pull wire is comprised of a biocompatible metallic material (e.g., a biocompatible metal or a biocompatible metal alloy). Optionally, the proximal end of a first proximal strip is located at least about 65 degrees (e.g., between about 65 and about 180 degrees) relative to the distal end of the first proximal strip, wherein the proximal end of a second proximal strip is located at least about 65 degrees (e.g., between about 65 and about 180 degrees) relative to the distal end of the second proximal strip, and further wherein the first and second proximal strips intersect adjacent and distal to the proximal hub/junction (e.g., within about 0 and about 4 mm of the proximal hub/junction). Optionally, each distal crown forms part of a cell that further comprises a proximal crown pointing generally in the proximal direction and connected to a memory metal strip (e.g., a proximal strip comprised of a memory metal or a basket strip comprised of a memory metal). In other words, the proximal crowns are not free. Optionally, the basket, the proximal hub/junction and the proximal strips are comprised of a memory metal, wherein the proximal hub/junction comprises a proximal end and a distal end, and further wherein the proximal strips are integral with the distal end of the proximal hub/junction. Optionally, the length of the distal body from the proximal hub/junction to the distal hub/junction (not including any lead wire) is from about 20 mm to about 65 mm. Optionally, the system is used in a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: 
     a) providing the system; 
     b) positioning the system in the lumen; 
     c) deploying the distal body from the distal end of the catheter; 
     d) allowing the height and width of the distal body to increase; 
     e) irradiating the distal body with x-rays; 
     f) moving the clot into the distal basket interior; and 
     g) moving the distal body proximally out of the blood vessel. 
     Optionally, the method further comprises irradiating the distal body with x-rays at at least two different angles. Optionally, at least one x-ray marker attached to the distal crowns is distal to the clot when the distal body is deployed from the distal end of the catheter. Optionally, the method further comprises applying contrast dye proximally and distally to the clot. Optionally, the method further comprises providing a suction catheter having a proximal end and a distal end, and attaching the distal end of the suction catheter to the clot by applying suction to the suction catheter. Optionally, the method further comprises aspirating by hand a pre-determined volume of fluid from the suction catheter using a syringe and then locking the syringe at the pre-determined volume. Optionally, the method further comprises delivering the suction catheter adjacent to the clot by advancing the catheter over the pull wire. 
     In yet another embodiment, the system includes: 
     a pull wire having a proximal end and a distal end; 
     a distal body attached to the pull wire, the distal body comprising an interior, a proximal end, a distal end, a distal body length extending from the proximal end to the distal end, a proximal hub/junction (preferably in the form of a tube) forming the proximal end of the distal body, a basket comprised of a plurality of cells formed by a plurality of basket strips, a plurality of proximal strips, and optionally a distal hub/junction (preferably in the form of a tube) forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a proximal end attached to the proximal hub/junction, and a distal end attached to a cell, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width; and a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state,
 
wherein, in the relaxed state, the basket comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the first pair of distal crowns located approximately the same distance from the proximal hub/junction and approximately 180 degrees relative to each other (e.g., between about 150 degrees and about 180 degrees relative to each other), and further wherein the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to, and approximately 90 degrees relative to, the first pair of distal crowns (e.g., each distal crown of the second pair of distal crowns is located approximately 60 degrees to 90 degrees relative to a distal crown of the first pair of distal crowns), the distal crowns in the second pair of distal crowns located approximately the same distance from the proximal hub/junction, wherein each distal crown of the first and second pair of distal crowns form a cell, each cell further comprising a proximal crown pointing generally in the proximal direction and connected to a memory metal strip, wherein each of the distal crowns in the first pair and second pair of distal crowns curve radially inward toward the basket interior in the relaxed state, wherein the distal crowns of the first pair of distal crowns are configured to contact each other when an exterior, external compressive force (e.g., a thrombus) is exerted on a distal crown of the first pair of distal crowns when the distal body is in the relaxed state, and further wherein the distal crowns of the second pair of distal crowns are configured to contact each other when an exterior, external compressive force (e.g., a thrombus) is exerted on a distal crown of the second pair of distal crowns when the distal body is in the relaxed state. When it is said that a proximal crown pointing generally in the proximal direction and is connected to a memory metal strip, it is meant that the proximal crown is either connected to a basket strip or a proximal strip comprised of a memory metal (e.g., nitinol). When it is said that the first pair of distal crowns are located approximately the same distance from the proximal hub/junction, it will be understood that if one of the first pair of distal crowns is located X distance from the proximal hub/junction, the other of the first pair of distal crowns is located X distance plus or minus (+/−) 0.5 mm from the proximal hub/junction. Similarly, when it is said that the second pair of distal crowns are located approximately the same distance from the proximal hub/junction, it will be understood that if one of the second pair of distal crowns is located Y distance from the proximal hub/junction, the other of the first pair of distal crowns is located Y distance plus or minus (+/−) 0.5 mm from the proximal hub/junction. Optionally, instead of a distal hub/junction, the basket includes an open distal end.
 
     Optionally, the proximal hub/junction is located approximately in the center of the first height and first width in the relaxed state. For example, preferably the proximal hub/junction is located within 0.5 mm of the center of first width and the first height. Optionally, the catheter is comprised of a polymeric material (i.e., one or more polymeric materials such as silicone, PVC, latex rubber or braided nylon). Optionally, the pull wire is comprised of a biocompatible metallic material (e.g., a biocompatible metal or a biocompatible metal alloy). Optionally, in the relaxed state, the basket interior is substantially hollow. Optionally, the proximal end of a first proximal strip is located at least about 65 degrees (e.g., between about 65 and about 180 degrees) relative to the distal end of the first proximal strip, wherein the proximal end of a second proximal strip is located at least about 65 degrees (e.g., between about 65 and about 180 degrees) relative to the distal end of the second proximal strip, and further wherein the first and second proximal strips intersect adjacent and distal to the proximal hub/junction (e.g., within about 0 mm and about 4 mm of the proximal hub/junction). Optionally, each distal crown in the first and second pair of distal crowns forms part of an enlarged cell and further wherein the surface area of each enlarged cell in the relaxed state is at least twice as large as the surface area of each other individual cell of the basket and further wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, the pull wire is attached to the proximal hub/junction. Optionally, the basket, the proximal hub/junction and the proximal strips are comprised of a memory metal, wherein the proximal hub/junction comprises a proximal end and a distal end, and further wherein the proximal strips are integral with the distal end of the proximal hub/junction. Optionally, the distal body further comprises a lead wire extending distally from the distal hub/junction, the lead wire having a length of from about 3 mm to about 10 mm. Optionally, the distal hub/junction, the proximal hub/junction, and the basket are comprised of a nitinol having the same material composition and further wherein the proximal and the distal hubs/junctions are tubular and generally cylindrical in shape and each has an outer diameter and an inner diameter, the inner diameter forming apertures of the proximal and distal hubs/junctions and further wherein the outer diameters of the proximal and distal hubs/junctions are substantially the same size and further wherein the inner diameters of the proximal and distal hubs/junctions are substantially the same size. Optionally, the length of the distal body from the proximal hub/junction to the distal hub/junction (not including any lead wire) is from about 20 mm to about 65 mm. 
     Optionally, the system is used in a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: 
     a) providing the system; 
     b) positioning the system in the lumen; 
     c) deploying the distal body from the distal end of the catheter; 
     d) allowing the height and width of the distal body to increase; 
     e) irradiating the distal body with x-rays; 
     f) moving the clot into the distal basket interior; and 
     g) moving the distal body proximally out of the blood vessel. 
     Optionally, the method further comprises irradiating the distal body with x-rays at at least two different angles. 
     In other embodiments the present disclosure provides a system for removing objects within an interior lumen of an animal, the system comprising: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from the proximal end to the distal end; 
     a coaxial sheath having a hollow interior, an open proximal end leading to the interior, and an open distal end leading to the interior, the coaxial sheath enveloping the pull wire, the coaxial sheath slideable along at least a segment of the pull wire; 
     a distal basket comprising an interior, a proximal end, a distal end, a distal basket length extending from the distal basket proximal end to the distal basket distal end, a distal basket height perpendicular to the distal basket length, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, and a plurality of distal cells distal to the proximal cells; 
     a plurality of proximal strips, each proximal strip having a proximal end extending from the coaxial sheath, a distal end attached to a proximal crown of a proximal cell and a length extending from the proximal end to the distal end; and 
     a catheter having a hollow interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material, 
     the distal basket comprised of a memory metal and having: 
     a relaxed state in which the distal end of the coaxial sheath is located at a first position along the pull wire, the first position located a first distance proximal to the proximal crowns, and in which the distal basket, as measured at the proximal-most crown, has a first height, 
     a proximal collapsed state in which the distal end of the coaxial sheath is located at a second position along the pull wire, the second position located a second distance proximal to the proximal crowns, and in which the distal basket, as measured at the proximal-most crown, has a second height, the second distance greater than the first distance, the second height less than the first height, and 
     a distal collapsed state in which the distal end of the coaxial sheath is located at a third position along the pull wire, the third position distal to the proximal crowns and located in the basket interior, and in which the distal basket, as measured at the proximal-most crown, has a third height, the third height less than the first height, 
     wherein the catheter is configured to envelope the distal basket when the distal basket is in the proximal collapsed state; 
     wherein the distal basket is configured to move from the relaxed state to the proximal collapsed state by moving the distal end of the coaxial sheath proximally to the second position while keeping the distal basket at a fixed location along the pull wire; and 
     wherein the distal basket is configured to move from the relaxed state to the distal collapsed state by moving the distal end of the coaxial sheath distally to the third position while keeping the distal basket at a fixed location along the pull wire. 
     Optionally, each proximal crown comprises a proximal tip and further wherein each proximal strip is configured to cover a proximal tip when the distal basket is in the distal collapsed state. Optionally, each proximal crown comprises an eyelet and further wherein each proximal strip passes through an eyelet. Optionally, the distal end of each proximal strip comprises a loop attaching the proximal strip to an eyelet. Optionally, each proximal crown has an interior surface facing the distal basket interior and an exterior surface opposite the interior surface and further wherein each proximal strip contacts an exterior surface of a proximal crown in the proximal collapsed state and in the distal collapsed state. Optionally, the pull wire extends through the distal basket interior and further wherein the proximal crowns are configured to move towards each other and towards the pull wire when the distal basket moves from the relaxed state to the distal collapsed state and when the distal basket moves from the relaxed state to the proximal collapsed state. Optionally, the proximal crowns are configured to remain a fixed distance from the distal end of the distal basket when the distal basket moves from the relaxed state to the distal collapsed state. Optionally, the coaxial sheath is a braided catheter comprised of a plurality of braids, and further wherein the proximal segments of the braids are wound together to form the braided catheter and further wherein an unwound distal segment of each braid forms a proximal strip. Optionally, at least one proximal crown further comprises an x-ray marker. Optionally, the proximal ends of the proximal strips are integral with the coaxial sheath. Optionally, the proximal ends of the proximal strips are attached to the coaxial sheath. Optionally, the system comprises between two and four proximal strips and the proximal strips are spaced substantially evenly apart. Optionally, the proximal strips have a length of from about 5 millimeters to about 40 millimeters in the relaxed state. Optionally, the pull wire extends through the basket interior from the distal basket proximal end to the distal basket distal end. Optionally, the coaxial sheath interior has a size and shape, and further wherein the size and shape of the coaxial sheath interior are configured to prevent a segment of the pull wire located in the basket interior and distal relative to the distal end of the coaxial sheath from moving through the coaxial sheath interior. Optionally, the distal end of the distal basket comprises a distal tube having an open proximal end and an open distal end, the distal tube comprised of a memory metal. Optionally, the distal basket and the distal were prepared from the same memory metal tube. Optionally, the second and third position along the pull wire each comprise an x-ray marker. Optionally, the distal tube is attached to the pull wire such that the distal tube is not slideable along the pull wire. Optionally, all proximal crowns of the proximal cells are attached to a proximal strip. Optionally, the distal basket further comprises a lead wire extending distally from the distal basket. Optionally, the proximal strips and the distal basket have a different material composition. Optionally, the proximal strips are comprised of a polymer. Optionally, the polymer is selected from the group consisting of fluorinated ethylene propylene, polytetrafluoroethylene, and tetrafluoroethtylene. Optionally, the proximal strips are comprised of a material selected from the group consisting of plastic, rubber, nylon, suture material, and braided catheter material. 
     Optionally, the system is used in a method of removing a clot from a blood vessel of an animal, the blood vessel having an interior wall forming the blood vessel, the method comprising the steps of: 
     a) providing the system, wherein the coaxial sheath is located in the catheter interior and the distal basket is located in the catheter interior in a collapsed state; 
     b) positioning the catheter in the blood vessel; 
     c) deploying the distal basket from the distal end of the catheter so that the proximal crowns of the proximal cells are distal to the clot; 
     d) allowing the distal basket to move to the relaxed state; 
     e) holding the coaxial sheath in the user&#39;s hand and moving the coaxial sheath distally to a fourth position (i.e., the surgeon interventionalist moves the coaxial sheath with his/her hands), the fourth position located distally beyond the proximal crowns and in the basket interior but proximal to the third position (this third position is not sufficiently distal to the proximal crowns to place tension on the proximal strips; thus, the crowns do not begin to move towards each other and the pull wire); 
     f) capturing the clot in the distal basket interior; 
     g) holding the coaxial sheath in a user&#39;s hand and moving the coaxial sheath further distally into the basket interior (i.e., to or near) the third position (i.e., the surgeon interventionalist moves the coaxial sheath with his/her hands) so that the distal basket height, as measured at the proximal-most crown, decreases and the proximal crowns move toward each other and the pull wire; and 
     h) moving the system proximally out of the blood vessel. 
     In still further embodiments, the present disclosure provides a system for removing objects within an interior lumen of an animal, the system comprising: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from the proximal end to the distal end; 
     a coaxial sheath having an open proximal end and an open distal end, the coaxial sheath enveloping the pull wire, the coaxial sheath slideable along at least a segment of the pull wire; 
     a distal basket comprising an interior, a proximal end, a distal end, a distal basket length extending from the distal basket proximal end to the distal end, a distal basket height perpendicular to the distal basket length, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, and a plurality of distal cells distal to the proximal cells; 
     a plurality of proximal strips, each proximal strip having a proximal end extending from the coaxial sheath, a distal end attached to a crown of a proximal cell and a length extending from the proximal end to the distal end; and 
     a catheter having a hollow interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material, 
     the distal basket comprised of a memory metal, 
     wherein each proximal crown of each proximal cell comprises an eyelet and further wherein each proximal strip passes through an eyelet. 
     The present disclosure also provides additional modular, easy-to-manufacture platform of systems for retrieving hard clots and other objects in animal lumens. In some embodiments, the system includes a proximal tube, a distal tube, and a plurality of memory metal strips between the proximal and distal tubes. The plurality of memory metal strips form a wide range of basket designs. Preferably, the proximal tube, memory metal strips, and distal tube are derived from a standard, off-the-shelf single tube of memory metal (e.g., a memory metal alloy such as nitinol), with the proximal tube and distal tube having the same inner diameter and outer diameter as the native tube from which they were derived and with the basket formed by cutting the middle portion of the native tube and expanding and shape-setting this cut portion. Preferably, the proximal tube and distal tube have an outer diameter that is from about 0.02 inches to about 0.03 inches (e.g., about 0.027 inches) so that the device fits inside a standard microcatheter and an inner diameter that is from about 0.01 inches to about 0.02 inches. Preferably, there are no welded or soldered parts between the proximal tube and distal tube, which makes the system easy and cheap to reliably manufacture. The system also includes one or more catheters for deploying the system, a pull wire that passes through the hollow interior of the proximal tube, and a coaxial tube. Preferably, the system includes two catheters—a guide catheter and a microcatheter. The coaxial tube envelopes the pull wire, is slideable along at least a segment of the pull wire, and is attached to the proximal hub/junction. The coaxial tube allows a user to move the proximal hub/junction toward and away from the distal hub/junction while keeping the distal hub/junction stationary. Movement of the proximal hub/junction toward and away from the distal hub/junction causes conformational changes in the basket, including (depending on the basket design and the location of the proximal tube), collapsing the basket, expanding the basket, strengthening the basket, and moving the basket around the clot. The plurality of memory metal strips attached to the proximal hub/junction include a plurality of proximal tether memory metal strips, which have a proximal end attached to the distal end of the proximal tube. The length and thickness of the proximal tether memory metal strips vary in the different embodiments described herein, which allows the surgical user to select from the various embodiments in the platform based on the features needed for the particular operation (e.g., vessel anatomy and hardness of the clot). 
     In some embodiments, the present disclosure provides a method of manufacturing a system for removing objects within an interior lumen of an animal that includes: 
     a) providing a single tube comprised of a memory metal, the single tube having an exterior, a hollow interior, a wall separating the exterior from the hollow interior, a proximal portion comprising an aperture leading to the hollow interior, a distal portion comprising an aperture leading to the hollow interior, and a middle portion between the proximal portion and the distal portion;
 
b) cutting the wall of the middle portion with a laser;
 
c) removing the pieces of the middle portion cut by the laser to form a basket system comprising a proximal tube comprising a hollow interior extending through said proximal tube, said proximal tube having a proximal end and a distal end, a distal tube comprising a hollow interior extending through said distal tube, and a middle portion located between said proximal tube and said distal tube and comprising a plurality of proximal tether memory metal strips, each proximal tether memory metal strip having a proximal end attached to the distal end of the proximal tube and a distal end;
 
d) altering the shape of the middle portion;
 
e) allowing the middle portion to expand relative to the distal tube and the proximal tube to form a basket that includes a plurality of cells;
 
f) optionally, inserting a pull wire through said proximal tube interior so that said proximal tube is slideable along at least a portion of said pull wire, said pull wire having a proximal end and a distal end; and
 
g) optionally, attaching said pull wire to said distal hub/junction.
 
     In other embodiments, instead of steps f) and g) noted above, the method includes inserting a pull wire comprising a proximal end, a distal end, a stop located adjacent to said distal end, through said proximal tube interior, said stop having a width and/or height that is greater than said proximal tube interior, said stop located distal relative to said proximal tube interior, so that said proximal tube is slideable distally until the proximal hub/junction reaches said stop, said pull wire not contacting said distal tube. In such embodiments, the pull wire does not contact the distal hub/junction. Rather in these embodiments, the method further includes attaching a leader wire to said distal tube 
     In some embodiments, either of the above methods further include h) providing a coaxial tube, said coaxial tube comprising a hollow interior receiving said pull wire, a proximal end, and a distal end, and i) attaching said distal end of said coaxial tube to said proximal tube. In some embodiments, the method of attaching said distal end of said coaxial tube to said proximal tube comprises welding or soldering said distal end of said coaxial tube to said proximal tube. In other embodiments, the method of attaching said distal end of said coaxial tube to said proximal tube comprises shrink wrapping said distal end of said coaxial tube to said proximal tube. In other embodiments, the method of attaching said distal end of said coaxial tube to said proximal tube comprises gluing said distal end of said coaxial tube to said proximal tube. 
     Optionally, after step e, the basket further comprises a row of proximal cells, each proximal cell defined by a plurality of memory metal strips and comprising a proximal crown located at a proximal end of the cell and pointing in the proximal direction and a distal crown located at a distal end of the cell and pointing in the distal direction and further wherein each of said proximal crowns of said proximal cells is attached to a distal end of a proximal tether memory metal strip. Optionally, after step e, the basket further comprises a row of distal cells located distal to said proximal cells and connected to said distal crowns of said proximal cells, each distal cell defined by a plurality of memory metal strips and comprising a proximal crown located at a proximal end of the cell and pointing in the proximal direction and a distal crown located at a distal end of the cell and pointing in the distal direction, and further wherein the number of distal cells is twice the number of proximal cells. Optionally, after step e, the basket further comprises a row of distal crowns distal to said proximal crowns and pointing in the distal direction and further wherein the number of distal crowns in said row is twice the number of proximal crowns attached to said proximal tether memory metal strip. 
     Optionally, after step e, the basket system further comprises a row of strut memory metal strips, each strut memory metal strip having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the basket comprises no welded or soldered components and said proximal tether memory metal strips are integral with said proximal cell crowns. 
     Optionally, after step e, the basket system comprises between two and four proximal tether memory metal strips. Optionally, the method further comprises not altering the shape of the proximal and distal portions while altering the shape of the middle portion. Optionally, the method further comprises cooling the proximal portion, the middle portion, and the distal portion after step D) and, after cooling, the proximal and distal portions have substantially the same size as the proximal and distal portions had prior to step A). Optionally, the method of allowing said middle portion to expand comprises heating the middle portion. Optionally, the method of altering the shape of the middle portion comprises using a mandrel. Optionally, the mandrel is tapered. Optionally, the proximal portion and the distal portion are not cut by the laser. Optionally, prior to cutting the memory metal tube, the memory metal tube has an outer diameter that is from about 0.011 inches to about 0.054 inches and an inner diameter that is from about 0.008 inches to about 0.051 inches. Optionally, after step e), the proximal tube and distal tube have an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the method further includes placing said basket inside a catheter comprised of a biocompatible material. Optionally, the method further includes the steps of placing the basket inside a lumen of an animal and using the basket to retrieve an object located inside said lumen. 
     The present disclosure also provides several systems for removing objects within an interior lumen of an animal. In some embodiments, the system includes: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a distal basket attached to said pull wire, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a proximal hub/junction located at said proximal end of the distal basket, said proximal hub/junction comprising a hollow interior, said pull wire passing through said proximal hub/junction hollow interior, said proximal hub/junction slideable along at least a segment of the pull wire, a plurality of proximal tether memory metal strips, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, each proximal tether memory metal strip having a proximal end attached to said proximal hub/junction, a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, a plurality of distal cells distal to the proximal cells, and a distal hub/junction located at said distal end of said distal basket and comprising a hollow interior, 
     said distal basket having 
     a relaxed state in which said proximal hub/junction is located a first distance proximal to said proximal crowns and wherein said distal basket has a first height, as measured at the proximal-most crown, 
     a gaping state in which said proximal hub/junction is located a second distance from said proximal crowns and wherein has a second height, as measured at the proximal-most crown, said second height greater than said first height, said second distance less than said first distance, 
     a proximal collapsed state in which said proximal hub/junction is located a third distance proximal to said proximal crowns and wherein said distal basket has a third height, as measured at the proximal-most crown, said third distance greater than said first distance, said third height less than said first height, 
     a catheter having a hollow interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal basket when said distal basket is in said proximal collapsed state; 
     wherein said distal basket is configured to move from said relaxed state to said gaping state by moving said proximal hub/junction distally relative to said distal hub/junction; and 
     wherein said distal basket is configured to move from said expanded state to said proximal collapsed state by moving said proximal hub/junction proximally relative to said distal hub/junction. 
     In some embodiments, the proximal tether memory metal strips have a thickness of between about 25% and 75% of the memory metal strips forming the proximal cell of the distal basket. In these embodiments, translation of the proximal hub/junction toward the stationary distal hub/junction deforms the tethers instead of the distal basket. In other embodiments, the proximal tether memory metal strips are as thick or thicker than the memory metal strips forming the proximal cells of the distal basket (e.g., between about 100% and 175% of the thickness of the memory metal strips forming the proximal cells of the basket). In these embodiments with thicker proximal tether memory metal strips, the proximal tether memory metal strips resist deforming when the proximal hub/junction is translated distally toward the stationary distal hub/junction and instead the proximal tether memory metal strips are bowed out laterally, dissecting through or around the clot and centering, buttressing and strengthening the opening of the basket. Generally, in both embodiments, moving the proximal hub/junction towards the distal hub/junction when the basket is in the relaxed state causes the proximal crowns of the proximal cells to move apart from each other, thereby expanding the opening of the distal basket. Preferably, in the embodiments with the thin tethers, in the relaxed state, the tethers have a length of from about 3 mm to about 10 mm, and in the embodiments with the thick tethers, the tethers have a length of from about 10 mm to about 20 mm. 
     Optionally, the distal basket further comprises a distal collapsed state in which said proximal hub/junction is located distal to said proximal crowns and wherein said distal basket has a fourth height, as measured at the proximal-most crown, said fourth height less than said first height and, wherein said catheter is configured to envelope said distal basket when said distal basket is in said distal collapsed state, and further wherein said distal basket is configured to move from said gaping state to said distal collapsed state by moving said proximal hub/junction distally relative to said distal hub/junction. Optionally, the system further includes a coaxial tube, said coaxial tube configured to be received in said catheter, said coaxial tube having a proximal end, a distal end attached to said proximal hub/junction, and a hollow interior, said pull wire passing through said coaxial tube hollow interior, said coaxial tube slideable along at least a segment of said pull wire. In some embodiments with the thin proximal memory metal strips, the combined length of two of said proximal tether memory metal strips is within about 2 mm of said second height. In other embodiments with the thin proximal memory metal strips, the combined length of two of said proximal tether memory metal strips is within about 2 mm of said second height multiplied by a factor of two. Optionally, said pull wire extends from said distal basket proximal end to said distal basket distal end. Optionally, said pull wire is not in contact with said distal hub/junction. Optionally, in said gaping state, said proximal hub/junction is located parallel to said proximal crown. Optionally, said pull wire and said proximal hub/junction are offset from the center of the distal basket height, as measured at the proximal-most crown. Optionally, all proximal crowns of said proximal cells are attached to a proximal tether memory metal strip. In other embodiments, the system has four proximal cells, each proximal cell having a proximal crown, and not all (e.g., only two) of the proximal crowns are attached to a proximal tether memory metal strip. Optionally, said distal basket further comprises a plurality of strut memory metal strips and plurality of distal cells defined by a plurality of distal memory metal strips, said distal cells comprising a proximal crown located at a proximal end of said distal cells and a distal crown located at a distal end of said distal cells, said strut memory metal strips having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four proximal tether memory metal strips. Optionally, said proximal memory metal strips are integral with said proximal hub/junction. Optionally, said proximal hub/junction is a tube, wherein said interior of said proximal hub/junction has a size and shape, and further wherein said size and shape of said proximal hub/junction interior are configured to prevent a segment of said pull wire distal relative to said proximal hub/junction from moving through proximal hub/junction interior. Optionally, said distal hub/junction is a tube. Optionally, said distal hub/junction is attached to said pull wire such that said distal hub/junction is not slideable along said pull wire. Optionally, said distal basket further comprises a lead wire extending distally from said distal hub/junction. Optionally, said distal hub/junction, said proximal hub/junction, and said basket are comprised of a nitinol having the same material composition. Optionally, said distal basket further comprises an x-ray marker. Optionally, said proximal and said distal hubs/junctions are generally cylindrical in shape and each has an outer diameter and an inner diameter, the inner diameter forming apertures of the proximal and distal hubs/junctions and further wherein the outer diameters of the proximal and distal hubs/junctions are substantially the same size and further wherein the inner diameters of the proximal and distal hubs/junctions are substantially the same size. Optionally, the outer diameters of the proximal and distal hubs/junctions are from about 0.011 inches to about 0.054 inches, and further wherein the inner diameters of the proximal and distal hubs/junctions are from about 0.008 inches to about 0.051 inches. Optionally, the proximal tube and distal tube have an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height of the distal basket is between about 2 millimeters and about 8 millimeters. Optionally, said proximal tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a proximal tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. 
     The present disclosure also provides a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen. In some embodiments, the method includes: 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said proximal hub/junction distally relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, increase; 
     f) moving said distal basket over said obstruction; and 
     g) removing said distal basket and said obstruction from said lumen. 
     Optionally, the interior lumen is an intracranial artery and said obstruction is a blood clot. Optionally, the method further comprises using said blood clot to move said proximal hub/junction distally relative to said distal hub/junction and allow said distal basket to move to said gaping state. Optionally, the method further comprises using a coaxial tube to push said proximal hub/junction distally relative to said distal hub/junction and allow said distal basket to move to said gaping state. Optionally, the method further includes, after step e, moving said proximal hub/junction relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, decrease. Optionally, after step e, said pull wire and said proximal hub/junction are offset with respect to the center of said distal basket height, as measured at the proximal-most crown, as measured at the proximal-most crown, and the center of said lumen. 
     The present disclosure also provides a system for removing objects within an interior lumen of an animal, the system comprising: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a proximal basket attached to said pull wire, said proximal basket comprising a proximal end, a distal end, a proximal basket length extending from said proximal basket proximal end to said distal end, a proximal basket height perpendicular to said proximal basket length and said pull wire longitudinal axis, a proximal tube located at said proximal end of the proximal basket, said proximal tube comprising a hollow interior, said pull wire passing through said hollow interior and said proximal tube slideable along at least a segment of said pull wire, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, 
     a distal basket attached to said pull wire, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a distal tube located at said distal end of the distal basket, said distal tube comprising a hollow interior, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, 
     a plurality of tether memory metal strips, each tether memory metal strip having a proximal end attached to a distal crown of a cell located at the distal end of said proximal basket and a distal end attached to a proximal crown of a cell located at the proximal end of said distal basket, 
     said proximal basket having 
     a relaxed state wherein said proximal basket has a first height, as measured at the distal-most crown, and said proximal hub/junction is located a first distance proximal to said distal hub/junction; 
     a collapsed state wherein said proximal basket has a second height, as measured at the distal-most crown, said second height less than said first height; 
     a gaping state wherein said proximal basket has a third height, as measured at the distal-most crown, and said proximal hub/junction is located a second distance proximal to said distal hub/junction, said third height greater than said first height and said second distance less than said first distance, 
     said proximal basket configured to move from said expanded state to said gaping state by pushing said proximal tube distally relative to said distal tube; 
     said distal basket having 
     a relaxed state wherein said distal basket has a first height and 
     a collapsed state wherein said distal basket has a second height, said second height less than said first height, and 
     a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal and said proximal basket when said baskets are in said collapsed state. 
     Optionally, said proximal tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a proximal tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. 
     In some embodiments, the system does not include a proximal hub/junction and the system includes soft cords in place of or in addition to the proximal memory metal strips. For example, in one embodiment, the system includes: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a coaxial tube having a proximal end, a distal end and a hollow interior, said pull wire passing through said coaxial tube hollow interior, said coaxial tube slideable along at least a segment of said pull wire; 
     a distal basket attached to said pull wire and said coaxial tube, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a plurality of cords, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, each cord having a proximal end attached to said coaxial tube, a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, a plurality of distal cells distal to the proximal cells, and a distal hub/junction located at said distal end of said distal basket and comprising a hollow interior, said distal basket having
 
a relaxed state in which said coaxial tube is located a first distance proximal to said proximal crowns and wherein said distal basket, as measured at the proximal-most crown, has a first height, a proximal collapsed state in which said coaxial tube is located a second distance proximal to said proximal crowns and wherein said distal basket, as measured at the proximal-most crown, has a second height, said second distance greater than said first distance, said second height less than said first height,
 
a catheter having a hollow interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said coaxial tube and said distal basket when said distal basket is in said proximal collapsed state; wherein said distal basket is configured to move from said relaxed state to said proximal collapsed state by moving said coaxial tube proximally relative to said distal hub/junction.
 
     Optionally, the distal basket further comprises a distal collapsed state in which said coaxial tube is located distal to said proximal crowns and wherein said distal basket, as measured at the proximal-most crown, has a third height, said third height less than said first height, wherein said catheter is configured to envelope said distal basket when said distal basket is in said distal collapsed state, and further wherein said distal basket is configured to move from said relaxed state to said distal collapsed state by moving said coaxial tub distally relative to said distal hub/junction. Optionally said cord is comprised of a material selected from the group consisting of plastic, rubber, nylon, suture material, braided catheter material, platinum coils, and ultrafine nitinol. Optionally, said cords are integral with said coaxial sheath. Optionally, said cords are glued to said coaxial sheath. Optionally, said cords are shrink wrapped to said coaxial sheath. Optionally, said cords have a thickness of about 0.004 to about 0.1 inches (more preferably, from about 0.004 to 0.018 inches). Optionally, said cords in said relaxed state, have a length of about 3 to about 20 mm. Optionally, said pull wire extends from said distal basket proximal end to said distal basket distal end and said pull wire is attached to said distal hub/junction. Optionally, all proximal crowns of said proximal cells are attached to a cord. Optionally, the basket comprises four proximal cells, each proximal cell having a proximal crown, and not all (e.g., only two) of the proximal crowns are attached to a cord. Optionally, said distal basket further comprises a plurality of strut memory metal strips and plurality of distal cells defined by a plurality of distal memory metal strips, said distal cells comprising a proximal crown located at a proximal end of said distal cells and a distal crown located at a distal end of said distal cells, said strut memory metal strips having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four cords. Optionally, said distal hub/junction is attached to said pull wire such that said distal hub/junction is not slideable along said pull wire. Optionally, said distal basket further comprises a lead wire extending distally from said distal hub/junction. Optionally, said distal hub/junction and said basket are comprised of a nitinol having the same material composition. Optionally, said distal basket and/or said coaxial tube further comprises an x-ray marker. Optionally, said distal hub/junction is generally cylindrical in shape and has an outer diameter and an inner diameter, the inner diameter forming the aperture of the distal hub/junction and further wherein the outer diameter of the distal hub/junction from about 0.011 inches to about 0.054 inches, and further wherein the inner diameter of the distal hub/junction is from about 0.008 inches to about 0.051 inches. Optionally, the distal tube has an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height of the distal basket, as measured at the proximal-most crown, is between about 2 millimeters and about 8 millimeters. Optionally, said cords are soft. 
     In some embodiments, the present disclosure provides a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen, the method comprising the steps of: 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said coaxial tube distally relative to said distal hub/junction so that said coaxial tube moves distally to the proximal-most crown; 
     f) moving said distal basket, said pull wire and said coaxial tube proximally so that said distal basket moves over said obstruction; 
     g) moving said coaxial sheath distally relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, decreases and said coaxial tube is closer to said distal hub/junction as compared to the proximal-most crown; and
 
h) removing said distal basket and said obstruction from said lumen.
 
     In other embodiments, the method includes 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said coaxial tube distally relative to said distal hub/junction so that said coaxial tube moves distally to the proximal-most crown; 
     f) moving said distal basket, said pull wire and said coaxial tube proximally so that said distal basket moves over said obstruction; 
     g) moving said coaxial sheath proximally relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, decreases; 
     h) moving said catheter distally relative to said distal hub/junction so that said catheter re-sheaths said coaxial sheath and partially re-sheaths said cords, thereby decreasing said distal basket height, as measured at the proximal-most crown; 
     i) removing said distal basket and said obstruction from said lumen. 
     Optionally, said interior lumen is an intracranial artery and said obstruction is a blood clot. 
     In other embodiments that do not include a proximal hub/junction, the system includes a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a coaxial tube having a proximal end, a distal end and a hollow interior, said pull wire passing through said coaxial tube hollow interior, said coaxial tube slideable along at least a segment of said pull wire; 
     a distal basket attached to said pull wire and said coaxial tube, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a plurality of proximal tether memory metal strips, a plurality of cords, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, each proximal tether memory metal strip having a proximal end attached to said coaxial tube and a distal end, each cord having a proximal end attached to a distal end of a proximal tether memory metal strip and a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, and a plurality of distal cells distal to the proximal cells, and a distal hub/junction located at said distal end of said distal basket and comprising a hollow interior, said distal basket having
 
a relaxed state in which said distal basket, as measured at the proximal-most crown, has a first height,
 
a collapsed state in which said distal basket, as measured at the proximal-most crown, has a second height, said second height less than said first height,
 
a catheter having a hollow interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said coaxial tube and said distal basket when said distal basket is in said collapsed state.
 
     Optionally, said cord is comprised of a material selected from the group consisting of plastic, rubber, nylon, suture material, braided catheter material, platinum coils and ultrafine nitinol. Optionally, said proximal tether memory metal strips are integral with said coaxial sheath. Optionally, said cords are glued to said proximal tether memory metal strips. Optionally, said cords are shrink wrapped to said proximal tether memory metal strips. Optionally, said cords have a thickness of from about 0.004 and about 0.1 inches (more preferably about 0.004 to about 0.018 inches) and said cords have a length of from about 3 mm to about 10 mm in said relaxed state. Optionally, said pull wire extends from said distal basket proximal end to said distal basket distal end and said pull wire is attached to said distal hub/junction. Optionally, all proximal crowns of said proximal cells are attached to a cord. Optionally, the basket comprises four proximal cells, each proximal cell having a proximal crown, and not all (e.g., only two) of the proximal crowns are attached to a cord. Optionally, said distal basket further comprises a plurality of strut memory metal strips and plurality of distal cells defined by a plurality of distal memory metal strips, said distal cells comprising a proximal crown located at a proximal end of said distal cells and a distal crown located at a distal end of said distal cells, said strut memory metal strips having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four cords. Optionally, said distal hub/junction is attached to said pull wire such that said distal hub/junction is not slideable along said pull wire. Optionally, said distal basket further comprises a lead wire extending distally from said distal hub/junction. Optionally, said distal hub/junction and said basket are comprised of a nitinol having the same material composition. Optionally, said distal basket and/or said coaxial tube further comprises an x-ray marker. Optionally, said distal hub/junction is generally cylindrical in shape and has an outer diameter and an inner diameter, the inner diameter forming the aperture of the distal hub/junction and further wherein the outer diameter of the distal hub/junction is from about 0.011 inches to about 0.054 inches, and further wherein the inner diameter of the distal hub/junction is from about 0.008 inches to about 0.051 inches. Optionally, the distal tube has an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height of the distal basket, as measured at the proximal-most crown, is between about 2 millimeters and about 8 millimeters. Optionally, the cords are soft. 
     In some embodiments, the above system is used in a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen that includes 
     a) providing the above system; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction, said coaxial sheath is proximal to said obstruction, said proximal tether memory metal strips are proximal to said obstruction, and said cords are adjacent to said obstruction;
 
d) allowing said distal basket to move to said relaxed state;
 
e) moving said coaxial tube distally relative to said distal hub/junction so that said proximal tether memory metal strips move distally relative to the proximal-most crown and said obstruction is sandwiched between said proximal tether memory metal strips and said proximal crowns of said proximal cells;
 
f) removing said distal basket and said obstruction from said lumen.
 
     Optionally said interior lumen is an intracranial artery and said obstruction is a blood clot. 
     In still further embodiments, the system includes a first wire that is attached to the proximal tube (but not the distal tube) and a second wire that is attached to the distal tube (but not the proximal tube). Preferably, in such embodiments, the system includes two catheters—a guide catheter and a microcatheter. The plurality of memory metal strips attached to the proximal hub/junction include a plurality of proximal tether memory metal strips, which have a proximal end attached to the distal end of the proximal tube. In some embodiments, the present disclosure provides a method of manufacturing a system for removing objects within an interior lumen of an animal comprising: 
     a) providing a single tube comprised of a memory metal, the single tube having an exterior, a hollow interior, a wall separating the exterior from the hollow interior, a proximal portion comprising an aperture leading to the hollow interior, a distal portion comprising an aperture leading to the hollow interior, and a middle portion between the proximal portion and the distal portion;
 
b) cutting the wall of the middle portion with a laser;
 
c) removing the pieces of the middle portion cut by the laser to form a basket system comprising a proximal tube comprising a proximal end, a distal end, and a hollow interior extending through said proximal tube, a distal tube comprising a hollow interior extending through said distal tube, and a middle portion located between said proximal tube and said distal tube and comprising a plurality of proximal memory metal tether strips, each proximal memory metal tether strip having a proximal end attached to the distal end of said proximal tube and a distal end,
 
d) altering the shape of the middle portion;
 
e) allowing the middle portion to expand relative to the distal tube and the proximal tube;
 
f) attaching a first wire to the proximal tube; and
 
g) attaching a second wire to the distal tube.
 
     Optionally, after step e, the basket system further comprises a row of proximal cells, each proximal cell defined by a plurality of memory metal strips and comprising a proximal crown located at a proximal end of the cell and pointing in the proximal direction and a distal crown located at a distal end of the cell and pointing in the distal direction and further wherein each of said proximal crowns of said proximal cells is attached to a distal end of a proximal tether memory metal strip. 
     Optionally, after step e, the basket system further comprises a row of distal cells located distal to said proximal cells and connected to said distal crowns of said proximal cells, each distal cell defined by a plurality of memory metal strips and comprising a proximal crown located at a proximal end of the cell and pointing in the proximal direction and a distal crown located at a distal end of the cell and pointing in the distal direction, and further wherein the number of distal cells is twice the number of proximal cells. Optionally, after step e, the basket system further comprises a row of strut memory metal strips, each strut having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, after step e, the basket system further comprises a row of distal crowns located distal to said proximal crowns and pointing in the distal direction, and further wherein the number of distal crowns in said row is twice the number of proximal crowns attached to said proximal tether memory metal strips. Optionally, the step of attaching said first wire to said proximal tube comprises placing said first wire inside said aperture of said proximal tube and gluing said first wire to said proximal tube. Optionally, the step of attaching said first wire to said proximal tube comprises placing said first wire inside said aperture of said proximal tube and welding or soldering said first wire to said proximal tube. Optionally, the step of attaching said first wire to said proximal tube comprises shrink wrapping said first wire to said proximal tube. Optionally, after step e, the basket system comprises between two and four proximal tether memory metal strips. Optionally, the method further comprises not altering the shape of the proximal and distal portions while altering the shape of the middle portion. Optionally, the method further comprises cooling the proximal portion, the middle portion, and the distal portion after step D) and, after cooling, the proximal and distal portions have substantially the same size as the proximal and distal portions had prior to step A). Optionally, the method of allowing said middle portion to expand comprises heating the middle portion. Optionally, the method of altering the shape of the middle portion comprises using a mandrel. Optionally, the mandrel is tapered. Optionally, the proximal portion and the distal portion are not cut by the laser. Optionally, prior to cutting the memory metal tube, the memory metal tube has an outer diameter that is from about 0.011 inches to about 0.054 inches and an inner diameter that is from about 0.008 inches to about 0.051 inches. Optionally, after step e), the proximal tube and distal tube have an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the method further includes placing said basket inside a catheter comprised of a biocompatible material. 
     The present disclosure also provides a system for removing objects within an interior lumen of an animal. In some embodiments, the system includes 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a distal basket attached to said pull wire, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a proximal tube located at said proximal end of the distal basket, said proximal tube comprising a hollow interior, a plurality of proximal tether memory metal strips, a row of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction, each proximal tether memory metal strip having a proximal end attached to said proximal tube, a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, a row of distal crowns located distal to said proximal cells pointing in the distal direction, and further wherein the number of distal crowns in said row is twice the number of proximal crowns attached to said proximal tether memory metal strips, and a distal tube located at said distal end of said distal basket,
 
said distal basket having
 
a relaxed state wherein said distal basket has a first height and
 
a collapsed state wherein said distal basket has a second height, said second height less than said first height, and
 
a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal body when said distal basket is in said collapsed state.
 
     Optionally, said proximal tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a proximal tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. Optionally, said proximal tether memory metal strips and said proximal cell memory metal strips each have a thickness and further wherein said thickness of said proximal tether memory metal strips is between about 100 to about 175 percent of the thickness of the proximal cell memory metal strips. Optionally, the length of said proximal tether memory metal strips is about 10 mm to about 20 mm in the relaxed (and the length of the remainder of the basket is about 10 to about 20 mm in the relaxed state so that the total basket length is between about 20 to about 40 mm in the relaxed state). Optionally, said distal end of said pull wire is attached to said proximal tube. Some or all of the proximal crowns of said proximal cells may be attached to a proximal tether memory metal strip. Optionally, said distal basket further comprises a row of strut memory metal strips, each strut memory metal strip having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four proximal tether memory metal strips. Optionally, said proximal tether memory metal strips are integral with said proximal tube. Optionally, said distal body further comprises a lead wire extending distally from said distal tube. Optionally, said distal tube, said proximal tube, and said basket are comprised of a nitinol having the same material composition. Optionally, said distal body further comprises an x-ray marker. Optionally, said proximal and said distal tubes are generally cylindrical in shape and each has an outer diameter and an inner diameter, the inner diameter forming the apertures of the proximal and distal tubes and further wherein the outer diameters of the proximal and distal tubes are substantially the same size and further wherein the inner diameters of the proximal and distal tubes are substantially the same size. Optionally, the outer diameters of the proximal and distal tubes are from about 0.011 inches to about 0.054 inches, and further wherein the inner diameters of the proximal and distal tubes are from about 0.008 inches to about 0.051 inches. Optionally, the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height is between about 2 millimeters and about 8 millimeters. 
     The present disclosure also provides a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen, the method comprising the steps of: 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in said collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said distal basket over said obstruction; and 
     f) removing said distal basket and said obstruction from said lumen. 
     Optionally, said interior lumen is an intracranial artery and said obstruction is a blood clot. 
     In other embodiments, the system includes: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a proximal basket attached to said pull wire, said proximal basket comprising an interior, an exterior, a proximal end, a distal end, a proximal basket length extending from said proximal basket proximal end to said distal end, a proximal basket height perpendicular to said proximal basket length and said pull wire longitudinal axis, a proximal tube located at said proximal end of the proximal basket, said proximal tube comprising a hollow interior, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction,
 
a distal basket attached to said pull wire, said distal basket comprising an interior, an exterior, a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a distal tube located at said distal end of the distal basket, said distal tube comprising a distal tube aperture, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction,
 
a plurality of tether memory metal strips, each tether memory metal strip having a proximal end attached to a distal crown of a cell located at the distal end of said proximal basket and a distal end attached to a proximal crown of a cell located at the proximal end of said distal basket,
 
said proximal basket having
 
a relaxed state wherein said proximal basket has a first height and
 
a collapsed state wherein said proximal basket has a second height, said second height less than said first height and said second width less than said first width,
 
said distal basket having
 
a relaxed state wherein said distal basket has a first height and a first width and
 
a collapsed state wherein said distal basket has a second height and a second width, said second height less than said first height, and
 
a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal and said proximal basket when said baskets are in said collapsed state.
 
     Optionally, said tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. 
     In still further embodiments, the present disclosure provides a method of manufacturing a medical device comprising: 
     a) providing a first tube comprised of a memory metal, the first tube having a first tube exterior, a first tube hollow interior, a first tube wall separating the first tube exterior from the first tube hollow interior, a first tube proximal end comprising a first tube proximal aperture leading to the first tube hollow interior, a first tube distal end comprising a first tube distal aperture leading to the first tube hollow interior, a first tube length extending from the first tube proximal end to the first tube distal end, a first tube perimeter generally perpendicular to the first tube length, a first tube outer width generally perpendicular to the first tube length, and a middle portion between the first tube proximal end and the first tube distal end, the middle portion having a middle portion width generally parallel to the first tube outer width; 
     b) using a cutting instrument to cut portions of the first tube wall and form i) a matrix in the middle portion comprising a plurality of middle portion memory metal strips forming a plurality of cells; ii) a plurality of proximal memory metal strips, each proximal memory metal strip having a proximal memory metal strip proximal end, a proximal memory metal strip distal end connected to a cell of the middle portion and a proximal memory metal strip length extending from the proximal memory metal strip proximal end to the proximal memory metal strip distal end; iii) a plurality of proximal longitudinal perforations, the plurality of longitudinal perforations non-contiguous and located in a proximal segment of each respective proximal memory metal strip and extending generally along the first tube length, a plurality of proximal longitudinal gaps, each proximal longitudinal gap separating adjacent proximal longitudinal perforations and formed from uncut portions of the first tube wall, the plurality of proximal longitudinal gaps and plurality of proximal longitudinal perforations forming first and second longitudinal sides of each proximal segment, wherein a proximal longitudinal tab is located between and connects adjacent proximal segments of adjacent proximal memory metal strips and is formed from uncut portions of the first tube wall; 
     c) shape setting at least the middle portion to expand the width of the middle portion; 
     d) after step c), polishing the first tube, wherein said polishing expands the plurality of proximal longitudinal perforations so that the proximal longitudinal gaps become smaller and adjacent proximal longitudinal perforations approach each other; 
     e) tearing along the plurality of proximal longitudinal perforations to free the proximal segments from the proximal longitudinal tabs and each other; 
     f) joining the free proximal segments of the proximal memory metal strips to form a medical device comprised of the joined proximal segments of the proximal memory metal strips, and the shape set middle portion, the medical device having a medical device length extending at least from the shape set middle portion to at least the joined proximal segments of the proximal memory metal strips and a medical device width generally perpendicular to the medical device length; and 
     g) inserting the medical device into a catheter comprising a catheter interior having an interior width, an open catheter proximal end leading to the catheter interior, an open catheter distal end leading to the catheter interior, the catheter comprised of a biocompatible material, wherein the medical device comprises a collapsed state wherein the medical device width is less than the catheter interior width and an expanded state wherein the medical device width is greater than the catheter interior width, wherein the catheter is configured to envelope the medical device when the medical device is in the collapsed state, and further wherein the catheter interior width is less than the first tube outer width. 
     Optionally, the first tube is generally cylindrical in shape and comprises a first tube outer diameter forming said first tube width, wherein said catheter is generally cylindrical in shape and comprises a catheter inner diameter forming said catheter interior width, wherein said step of joining the free proximal segments of the proximal memory metal strips comprises attaching the free proximal segments of the proximal memory metal strips to a second tube, the second tube generally cylindrical in shape and comprising a second tube outer diameter, wherein said second tube outer diameter is less than said first tube outer diameter and less than said catheter inner diameter. Optionally, the second tube comprises a coil system, said coil system comprising a pull wire and at least one coil surrounding the pull wire. Optionally, step f) comprises attaching the proximal segments of the proximal memory metal strips to the coil system between the pull wire and the at least one coil. Optionally, said coil system comprises a proximal coil and a distal coil separated by a longitudinal space and said step f) comprises attaching the proximal segments of the proximal memory metal strips to the proximal and distal coils by a solder at the longitudinal space. Optionally, said pull wire comprises a pull wire proximal end, a pull wire distal end, a pull wire length extending from the pull wire proximal end to the pull wire distal end and a pull wire width generally perpendicular to the pull wire length and further wherein said pull wire width comprises a segment in which the pull wire width tapers along the pull wire length. Optionally, step b) further comprises using the cutting instrument to form iv) a plurality of distal memory metal strips, each distal memory metal strip having a distal memory metal strip distal end, a distal memory metal strip proximal end connected to a cell of the middle portion and a distal memory metal strip length extending from the distal memory metal strip proximal end to the distal memory metal strip distal end; v) a plurality of distal longitudinal perforations, the distal longitudinal perforations non-contiguous and located in a distal segment of each respective distal memory metal strip and extending generally along the first tube length, a plurality of distal longitudinal gaps, each distal longitudinal gap separating adjacent distal longitudinal perforations and formed from uncut portions of the first tube wall, the plurality of distal longitudinal gaps and plurality of distal longitudinal perforations forming first and second longitudinal sides of each distal segment, and a plurality of distal longitudinal tabs connecting adjacent distal segments of adjacent distal memory metal strips and formed from uncut portions of the first tube wall; wherein said polishing expands the plurality of distal longitudinal perforations so that the distal longitudinal gaps become smaller and adjacent distal longitudinal perforations approach each other; wherein step e) further comprises tearing along the plurality of distal longitudinal perforations to free the distal segments from the distal longitudinal tabs and each other; wherein step f) further comprises joining the free distal segments of the distal memory metal strips to form a medical device comprised of the joined proximal segments of the proximal memory metal strips, the joined distal segments of the distal memory metal strips, and the shape set middle portion, the medical device having a medical device length extending at least from the joined distal segments of the distal memory metal strips to at least the joined proximal segments of the proximal memory metal strips and a medical device width generally perpendicular to the medical device length. Optionally, said step of joining the free distal segments of the distal memory metal strips comprises attaching the free distal segments of the distal memory metal strips to a third tube, the third tube generally cylindrical in shape and comprising a third tube outer diameter, wherein said third tube outer diameter is less than said first tube outer diameter and less than said catheter inner diameter. Optionally, step b) further comprises using the cutting instrument to cut portions of the first tube wall and form a plurality of proximal perimeter perforations, the plurality of proximal perimeter perforations located adjacent to the first tube proximal end, spaced about the perimeter of the first tube and a plurality proximal perimeter gaps, each proximal perimeter gap separating adjacent proximal perimeter perforations and formed from uncut portions of the first tube wall, the plurality of proximal perimeter perforations and the proximal perimeter gaps defining a proximal end tab located at the proximal end of the first tube, wherein the proximal end of each proximal memory metal strip is connected to the proximal end tab, wherein the proximal end tab connects the proximal ends of the proximal memory metal strips, wherein said polishing expands the plurality of proximal perimeter perforations so that the proximal perimeter gaps become smaller and adjacent proximal perimeter perforations approach each other and step e) further comprises tearing along the plurality of proximal perimeter perforations to free the proximal ends of the proximal memory metal strips from the proximal end tab and each other. Optionally, the first tube is generally cylindrical in shape and comprises a first tube outer diameter and a first tube circumference and further wherein the proximal perimeter perforations are arranged in a generally straight line about the circumference of the first tube and the distal perimeter perforations are arranged in a generally straight line about the circumference of the first tube. Optionally step b) further comprises using the cutting instrument to cut portions of the first tube wall and form a plurality of distal perimeter perforations, the plurality of distal perimeter perforations located adjacent to the first tube distal end, spaced about the perimeter of the first tube and a plurality of distal perimeter gaps, each distal perimeter gap separating adjacent distal perimeter perforations and formed from uncut portions of the first tube wall, the plurality of distal perimeter perforations and the distal perimeter gaps defining a distal end tab located at the distal end of the first tube, wherein the distal end of each distal memory metal strip is connected to the distal end tab, wherein the distal end tab connects the distal ends of the distal memory metal strips, wherein said polishing expands the plurality of distal perimeter perforations so that the distal perimeter gaps become smaller and adjacent distal perimeter perforations approach each other and step e) further comprises tearing along the plurality of distal perimeter perforations to free the distal ends of the distal memory metal strips from the distal end tab and each other. Optionally, the method further comprises connecting the joined proximal memory metal strips to a pull wire. Optionally, said proximal memory metal strips comprise a width generally perpendicular to the first tube length and further wherein said widths of said proximal memory metal strips taper as the proximal memory metal strips approach the proximal end of the first tube. Optionally, after step d), the plurality of proximal longitudinal perforations become nearly continuous. Optionally, said polishing the first tube comprises electropolishing the first tube. Optionally, said middle portion memory metal strips of said shape set middle portion form a basket comprising a basket interior and a basket length generally parallel to the medical device length. Optionally, in the expanded state, the basket is configured to capture a foreign object in an interior lumen of an animal. Optionally, in the expanded state, the medical device width is less than the medical device length. Optionally, said catheter interior width is at least 0.001 inches less than said first tube outer width. Optionally, after step e), the proximal memory metal strips comprise a smooth periphery. Optionally, in step b), each distal end of each proximal memory metal strip is connected to a proximal crown of a cell of the middle portion. 
     In still further embodiments, the present disclosure provides a method of manufacturing a medical device comprising: 
     a) providing a first tube comprised of a memory metal, the first tube generally cylindrical in shape having a first tube exterior, a first tube hollow interior, a first tube wall separating the first tube exterior from the first tube hollow interior, a first tube proximal end comprising a first tube proximal aperture leading to the first tube hollow interior, a first tube distal end comprising a first tube distal aperture leading to the first tube hollow interior, a first tube length extending from the first tube proximal end to the first tube distal end, a first tube circumference generally perpendicular to the first tube length, a first tube outer diameter generally perpendicular to the first tube length, and a middle portion between the first tube proximal end and the first tube distal end, the middle portion having a middle portion width generally parallel to the first tube width; 
     b) using a cutting instrument to cut portions of the first tube wall and form a matrix in the middle portion comprising a plurality of middle portion memory metal strips and a plurality of perforations located adjacent to the proximal and distal ends of the first tube, wherein the plurality of perforations are non-contiguous and each adjacent perforation is separated by a gap formed of uncut portions of the first tube wall; 
     c) shape setting at least the middle portion to expand the width of the middle portion; 
     d) after step c), expanding the plurality of perforations so that adjacent perforations approach each other; 
     e) tearing along the plurality of perforations to remove at least a portion of the proximal end and at least a portion of the distal end of the first tube and form a medical device comprised of a plurality of proximal memory metal strips, a plurality of distal memory metal strips, and the shape set middle portion, the medical device having a length extending from at least the plurality of proximal memory metal strips to at least the plurality of distal memory metal strips and a medical device width perpendicular to the medical device length; 
     f) joining the proximal memory metal strips by attaching the proximal memory metal strips to a second tube, the second tube generally cylindrical in shape and comprising a second tube outer diameter and joining the distal memory metal strips by attaching the distal memory metal strips to a third tube, the third tube generally cylindrical in shape and comprising a third tube outer diameter; and 
     g) inserting the medical device into a catheter generally cylindrical in shape comprising a catheter interior having an inner diameter, an open catheter proximal end leading to the catheter interior, an open catheter distal end leading to the catheter interior, the catheter comprised of a biocompatible material, wherein the medical device comprises a collapsed state wherein the medical device width is less than the catheter inner diameter and an expanded state wherein the medical device width is greater than the catheter inner diameter, wherein the catheter is configured to envelope the medical device when the medical device is in the collapsed state, wherein the catheter inner diameter is less than the first tube outer diameter, and further wherein said second tube outer diameter and said third tube outer diameter are less than said first tube outer diameter and less than said catheter inner diameter. 
     In addition, the method may include one or more steps described with the method of manufacturing described above, including without limitation the method of attaching to a coil and a pull wire, the method of forming the longitudinal and perimeter perforations and tabs described above, and the method of forming the basket. 
     In yet still further embodiments, the present disclosure provides a method of manufacturing a medical device comprising: 
     a) providing a first tube comprised of a memory metal, the first tube having a first tube exterior, a first tube hollow interior, a first tube wall separating the first tube exterior from the first tube hollow interior, a first tube proximal end comprising a first tube proximal aperture leading to the first tube hollow interior, a first tube distal end comprising a first tube distal aperture leading to the first tube hollow interior, a first tube length extending from the first tube proximal end to the first tube distal end, a first tube perimeter generally perpendicular to the first tube length, a first tube outer width generally perpendicular to the first tube length, and a middle portion between the first tube proximal end and the first tube distal end, the middle portion having a middle portion width generally parallel to the first tube width; 
     b) using a cutting instrument to cut portions of the first tube wall and form i) a matrix in the middle portion comprising a plurality of middle portion memory metal strips forming a plurality of cells; ii) a plurality of proximal memory metal strips, each proximal memory metal strip having a proximal memory metal strip proximal end, a proximal memory metal strip distal end connected to a cell of the middle portion and a proximal memory metal strip length extending from the proximal memory metal strip proximal end to the proximal memory metal strip distal end; iii) a plurality of proximal longitudinal perforations, the plurality of longitudinal perforations non-contiguous and located in a proximal segment of each respective proximal memory metal strip and extending generally along the first tube length, a plurality of proximal longitudinal gaps, each proximal longitudinal gap separating adjacent proximal longitudinal perforations and formed from uncut portions of the first tube wall, the plurality of proximal longitudinal gaps and plurality of proximal longitudinal perforations forming first and second longitudinal sides of each proximal segment, wherein a proximal longitudinal tab is located between and connects adjacent proximal segments of proximal memory metal strips and is formed from uncut portions of the first tube wall; 
     c) shape setting at least the middle portion to expand the width of the middle portion; 
     d) after step c), polishing the first tube, wherein said polishing expands the plurality of proximal longitudinal perforations so that the proximal longitudinal gaps become smaller and adjacent proximal longitudinal perforations approach each other; 
     e) tearing along the plurality of proximal longitudinal perforations to free the proximal segments from the proximal longitudinal tabs and each other; 
     f) joining the free proximal segments of the proximal memory metal strips by attaching the proximal memory metal strips to a second tube having a second tube outer width to form a medical device comprised of the joined proximal segments of the proximal memory metal strips, and the shape set middle portion, the medical device having a medical device length extending at least from the shape set middle portion to at least the joined proximal segments of the proximal memory metal strips and a medical device width generally perpendicular to the medical device length; and 
     g) inserting the medical device into a catheter comprising a catheter interior having an interior width, an open catheter proximal end leading to the catheter interior, an open catheter distal end leading to the catheter interior, the catheter comprised of a biocompatible material, wherein the medical device comprises a collapsed state wherein the medical device width is less than the catheter interior width and an expanded state wherein the medical device width is greater than the catheter interior width, wherein the catheter is configured to envelope the medical device when the medical device is in the collapsed state, and further wherein the second tube outer width is less than the first tube outer width. 
     In addition, the method may include one or more steps described with the method of manufacturing described above, including without limitation the method of attaching to a coil and a pull wire, the method of forming the perimeter perforations and tabs described above, and the shape set middle portion may be a basket. 
     In still further embodiments, the present disclosure provides a catheter-delivered endovascular device comprising: 
     a) a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from the proximal end to the distal end; 
     b) a deployable dual basket system attached to the pull wire and comprising a system circumference separating a system interior from a system exterior, a system proximal end, a system distal end, a system height having a system height center, a system width perpendicular to the system height and having a system width center, a system longitudinal axis from the system proximal end to the system distal end and extending through the system height center and system width center, the deployable dual basket system comprising:
 
i) a proximal basket attached to the pull wire, the proximal basket comprising a proximal basket circumference separating a proximal basket interior from a proximal basket exterior, a proximal end forming the system proximal end, a distal end, a proximal basket height generally parallel to the system height, a proximal basket width generally parallel to the system width and perpendicular to the proximal basket height, a proximal basket longitudinal axis extending from the proximal basket proximal end to the proximal basket distal end and generally parallel to the system longitudinal axis and generally perpendicular to the proximal basket height and proximal basket width, a proximal junction located at the proximal end of the proximal basket, a plurality of proximal cells distal to the proximal junction and defined by a plurality of proximal basket memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, a plurality of proximal tether memory metal strips located between the proximal junction and the proximal cells and connecting the proximal cells to the proximal junction, each proximal tether memory metal strip having a proximal end attached to the proximal junction, a distal end attached to a proximal crown of a proximal cell, the proximal basket having a relaxed state wherein the proximal basket has a first height and a first width and a collapsed state wherein the proximal basket has a second height and a second width, the second height less than the first height and the second width less than the first width; and
 
ii) a distal basket distal to the proximal basket and comprising a distal basket circumference separating a distal basket interior from a distal basket exterior, a proximal end, a distal end forming the system distal end, a distal basket height generally parallel to the system height, a distal basket width generally parallel to the system width and generally perpendicular to the distal basket height, a distal basket longitudinal axis extending from the distal basket proximal end to the distal basket distal end and generally parallel to the system longitudinal axis, a distal junction located at the distal end of the distal basket, a plurality of distal cells proximal to the distal junction and defined by a plurality of distal basket memory metal strips, each distal cell comprising a proximal crown located at the proximal end of the distal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the distal cell and pointing generally in the distal direction, the distal basket having a relaxed state wherein the distal basket has a first height and a first width and a collapsed state wherein the distal basket has a second height and a second width, the second height less than the first height; and
 
iii) a plurality of basket connector tether memory metal strips located between the proximal basket and the distal basket and connecting the proximal basket to the distal basket and located between the proximal basket and the distal basket, each basket connector tether memory metal strip having a proximal end attached to a distal crown of a cell located at the distal end of the proximal basket and a distal end attached to a proximal crown of a cell located at the proximal end of the distal basket; and
 
c) a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the deployable dual basket system when the proximal basket and distal basket are in the collapsed state, wherein, in the relaxed state and the collapsed state, the basket connector tether memory metal strips rotate a degree of rotation about the system circumference relative to the proximal basket longitudinal axis, the distal basket longitudinal axis and the system longitudinal axis.
 
     Optionally, in the relaxed state and the collapsed state, a distal crown of the proximal basket attached to the proximal end of a basket connector tether memory metal strip is offset about the system circumference relative to the proximal crown of the distal basket attached to the distal end of the same basket connector tether memory metal strip. Optionally, each basket connector tether memory metal strip rotates a greater degree of rotation in the collapsed state as compared to the degree of rotation of the same basket tether connector memory metal strip in the relaxed state. Optionally, at least some of the distal basket memory metal strips are located at the distal end of the distal basket, wherein each of the distal basket memory metal strips located at the distal end of the distal basket have a distal end, wherein each of the distal ends of the distal basket memory metal strips located at the distal end of the distal basket converge at the distal junction and further wherein the distal basket, in the relaxed state, comprises a tapered region in which the distal basket height and width decrease as the distal basket memory metal strips located at the distal end of the distal basket approach the distal junction. Optionally, the proximal basket, in the relaxed state, comprises a tapered region in which the proximal basket height and width decrease as the proximal tether memory metal strips approach the proximal junction. Optionally, in the relaxed state, except for the tapered regions and the basket connector tether memory metal strips, the deployable dual basket system has a generally tubular shape. Optionally, in the relaxed state, the radial force of the deployable dual basket system from the proximal ends of the basket connector tether memory metal strips to the distal ends of the basket connector tether memory metal strips is less than the radial force of the proximal basket, as measured from the proximal crowns of the cells of the proximal basket attached to the plurality of proximal memory metal strips to the distal crowns of the cells of the proximal basket attached to the plurality of basket connector tether memory metal strips. 
     Optionally, the system has two basket connector tether memory metal strips. Optionally, in the relaxed state, the basket connector tether memory metal strips each rotate at least about fifteen degrees in the same direction relative to the proximal basket longitudinal axis and the distal basket longitudinal axis. Optionally, in the collapsed state, the distal end of a first basket connector tether memory metal strip is located between about 90 degrees and about 270 degrees relative to the proximal end of the first basket connector tether memory metal strip, and further wherein in the collapsed state, the distal end of a second basket connector tether memory metal strip is located between about 90 degrees and about 270 degrees relative to the proximal end of the second connector tether memory metal strip. Optionally, in the relaxed state, the height of the proximal basket is greater than the height of the distal basket and further wherein the width of the proximal basket is greater than the width of the distal basket. Optionally, in the relaxed state, the radial force of the distal basket, as measured from the proximal crowns of the cells of the distal basket attached to the plurality of basket connector tether memory metal strips to the distal-most crown of the distal cells of the distal basket, is less than the radial force of the proximal basket, as measured from the proximal crowns of the cells of the proximal basket attached to the plurality of proximal memory metal strips to the distal crowns of the cells of the proximal basket attached to the plurality of basket connector tether memory metal strips. Optionally, in the relaxed state, the radial force of the proximal basket is substantially uniform from the proximal crowns of the cells of the proximal basket attached to the plurality of proximal memory metal strips to the distal crowns of the cells of the proximal basket attached to the plurality of basket connector tether memory metal strips. Optionally, in the relaxed state, the radial force of the distal basket is substantially uniform from the proximal crowns of the cells of the distal basket attached to the plurality of basket connector tether memory metal strips to the distal-most crown of the distal cells of the distal basket. Optionally, the proximal basket interior and the distal basket interior are generally hollow and the proximal basket cells are spaced about the circumference of the proximal basket and further wherein the distal basket cells are spaced about the circumference of the distal basket. Optionally, the basket connector tether memory metal strips do not traverse the system interior. Optionally, each of the distal crowns of the proximal basket connected to the basket connector tether memory metal strips are approximately the same distance from the proximal junction and further wherein each of the proximal crowns of the distal basket connected to the basket connector tether memory metal strips are approximately same distance from the distal junction. Optionally, each of the proximal crowns of the proximal basket and distal basket are connected to a memory metal strip extending proximally from the proximal crowns and each of the distal crowns of the proximal basket and distal basket are connected to a memory metal strip extending distally from the distal crowns. Optionally, the basket connector tether memory metal strips and the proximal tether memory metal strips form flex points of the deployable dual basket system. Optionally, in the collapsed state, the distal end of a first proximal tether memory metal strip is located between about 90 degrees and about 270 degrees relative to the proximal end of the first proximal tether memory metal strip, and further wherein in the collapsed state, the distal end of a second proximal tether memory metal strip is located between about 90 degrees and about 270 degrees relative to the proximal end of the second proximal tether memory metal strip. Optionally, the first and second proximal memory metal strips intersect adjacent and distal to the proximal junction. Optionally, the basket connector tether memory metal strips form the sole attachment of the proximal basket to the distal basket. 
     The present disclosure also provides a method of treating vasospasm using the catheter-delivered endovascular device to open a blood vessel. For example, the method may involve treating a human having a subarrachnoid hemorrhage induced vasospasm in a constricted blood vessel having a proximal region having a constricted height and a constricted width and a distal region having a constricted height and a constricted width, the method comprising the steps of: 
     a) providing the catheter-delivered endovascular device, wherein the distal basket and the proximal basket are in the collapsed state and located in the catheter interior; 
     b) positioning the deployable dual basket system in the blood vessel so that the distal end of the catheter is distal to the distal region of the blood vessel; 
     c) deploying the proximal basket and the distal basket from the distal end of the catheter into the distal region of the blood vessel; 
     d) allowing the height and width of the distal basket and the proximal basket to increase and cause the height and width of the distal region of the blood vessel to increase; 
     e) moving the deployable dual basket system proximally in the relaxed state within the blood vessel and into the proximal region to cause the height and width of the proximal region of the blood vessel to increase; and 
     f) withdrawing the deployable dual basket system from the blood vessel and out of the human. 
     Optionally, the blood vessel is lined with endothelium and the method comprises performing steps a)-f) without damaging the endothelium. 
     In still further embodiments, the present disclosure provides a catheter-delivered endovascular device comprising: 
     a) a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from the proximal end to the distal end; 
     b) a deployable dual basket system attached to the pull wire and comprising a system circumference separating a system interior from a system exterior, a system proximal end, a system distal end, a system height having a system height center, a system width perpendicular to the system height and having a system width center, a system longitudinal axis from the system proximal end to the system distal end and extending through the system height center and system width center, the deployable dual basket system comprising:
 
i) a proximal basket attached to the pull wire, the proximal basket comprising a proximal basket circumference separating a proximal basket interior from a proximal basket exterior, a proximal end forming the system proximal end, a distal end, a proximal basket height generally parallel to the system height, a proximal basket width generally parallel to the system width and perpendicular to the proximal basket height, a proximal basket longitudinal axis extending from the proximal basket proximal end to the distal end and generally parallel to the system longitudinal axis and generally perpendicular to the proximal basket height and proximal basket width, a proximal junction located at the proximal end of the proximal basket, a plurality of proximal cells distal to the proximal junction and defined by a plurality of proximal basket memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, a plurality of proximal tether memory metal strips located between the proximal junction and the proximal cells and connecting the proximal cells to the proximal junction, each proximal tether memory metal strip having a proximal end attached to the proximal junction, a distal end attached to a proximal crown of a proximal cell, the proximal basket having a relaxed state wherein the proximal basket has a first height and a collapsed state wherein the proximal basket has a second height, the second height less than the first height and the second width less than the first width; and
 
ii) a distal basket distal to the proximal basket and comprising a distal basket circumference separating a distal basket interior from a distal basket exterior, a proximal end, a distal end forming the system distal end, a distal basket height generally parallel to the system height, a distal basket width generally parallel to the system width and generally perpendicular to the distal basket height, a distal basket longitudinal axis extending from the distal basket proximal end to the distal end and generally parallel to the system longitudinal axis, a distal junction located at the distal end of the distal basket, a plurality of distal cells proximal to the distal junction and defined by a plurality of distal basket memory metal strips, each distal cell comprising a proximal crown located at the proximal end of the distal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the distal cell and pointing generally in the distal direction, the distal basket having a relaxed state wherein the distal basket has a first height and a first width and a collapsed state wherein the distal basket has a second height and a second width, the second height less than the first height; and
 
iii) a plurality of basket connector tether memory metal strips located between the proximal basket and the distal basket and connecting the proximal basket to the distal basket and located between the proximal basket and the distal basket, each basket connector tether memory metal strip having a proximal end attached to a distal crown of a cell located at the distal end of the proximal basket and a distal end attached to a proximal crown of a cell located at the proximal end of the distal basket; and
 
c) a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the deployable dual basket system when the proximal basket and distal basket are in the collapsed state,
 
     Optionally, in the relaxed state, each basket connector tether memory metal strip rotates a degree of rotation about the system circumference relative to the proximal basket longitudinal axis, the distal basket longitudinal axis and the system longitudinal axis. Optionally, in the relaxed state, a distal crown of the proximal basket attached to the proximal end of a basket connector tether memory metal strip is offset about the system circumference relative to the proximal crown of the distal basket attached to the distal end of the same basket connector tether memory metal strip. 
     The present disclosure also provide a method of manufacturing a medical device comprising a proximal basket and a distal basket, the method comprising: 
     a) providing a first tube comprised of a memory metal, the first tube having a first tube exterior, a first tube hollow interior, a first tube wall separating the first tube exterior from the first tube hollow interior, a first tube proximal end comprising a first tube proximal aperture leading to the first tube hollow interior, a first tube distal end comprising a first tube distal aperture leading to the first tube hollow interior, a first tube length extending from the first tube proximal end to the first tube distal end, a first tube longitudinal axis generally parallel to the first tube length, a first tube perimeter generally perpendicular to the first tube length, a first tube outer width generally perpendicular to the first tube length, a proximal middle portion between the first tube proximal end and the first tube distal end, the proximal middle portion having a proximal middle portion width generally parallel to the first tube outer width, and a distal middle portion between the proximal middle portion and the distal middle portion;
 
b) using a cutting instrument to cut portions of the first tube wall and form a proximal matrix in the proximal middle portion comprising a plurality of proximal middle portion memory metal strips forming a plurality of proximal matrix cells, each proximal matrix cell having a proximal crown pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and a proximal matrix cell length extending from the proximal crown to the distal crown and generally parallel to the first tube longitudinal axis; ii) a plurality of proximal tether memory metal strips, each proximal tether memory metal strip having a proximal tether memory metal strip proximal end, a proximal tether memory metal strip distal end connected to a proximal crown of a proximal matrix cell and a proximal tether memory metal strip length extending from the proximal tether memory metal strip proximal end to the proximal tether memory metal strip distal end, the proximal tether memory metal strips formed by moving the cutting instrument at an angle of between about 90 degrees and 270 degrees relative to the first tube longitudinal axis; iii) a distal matrix in the proximal middle portion comprising a plurality of distal middle portion memory metal strips forming a plurality of distal matrix cells, each distal matrix cell having a proximal crown pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and a distal matrix cell length extending from the proximal crown to the distal crown and generally parallel to the first tube longitudinal axis; iv) a plurality of basket connector tether memory metal strips, each basket connector tether memory metal strip having a basket connector tether memory metal strip proximal end connected to a distal crown of a proximal matrix cell, a basket connector tether memory metal strip distal end connected to a proximal crown of a distal matrix cell and a basket connector tether memory metal strip length extending from the basket connector tether memory metal strip proximal end to the basket connector tether memory metal strip distal end, the basket connector tether memory metal strips formed by rotating the first tube about the first tube longitudinal axis relative to the cutting instrument so that the proximal end of a basket connector tether memory metal strip is located between about 90 degrees and about 270 degrees relative to the distal end of the same basket connector tether memory metal strip; and v) a plurality of proximal longitudinal perforations, the plurality of longitudinal perforations non-contiguous and located in a proximal segment of each respective proximal memory metal strip and extending generally along the first tube length, a plurality of proximal longitudinal gaps, each proximal longitudinal gap separating adjacent proximal longitudinal perforations and formed from uncut portions of the first tube wall, the plurality of proximal longitudinal gaps and plurality of proximal longitudinal perforations forming first and second longitudinal sides of each proximal segment, wherein a proximal longitudinal tab is located between and connects adjacent proximal segments of adjacent proximal memory metal strips and is formed from uncut portions of the first tube wall;
 
c) shape setting at least the proximal middle portion and the distal middle portion to expand the width of the proximal middle portion and the distal middle portion and form a proximal basket comprised of the proximal matrix cells and a distal basket comprised of the distal matrix cells, the proximal basket and the distal basket connected by the basket connector tether memory metal strips;
 
d) after step c), polishing the first tube, wherein said polishing expands the plurality of proximal longitudinal perforations so that the proximal longitudinal gaps become smaller and adjacent proximal longitudinal perforations approach each other;
 
e) tearing along the plurality of proximal longitudinal perforations to free the proximal segments from the proximal longitudinal tabs and each other;
 
f) joining the free proximal segments of the proximal tether memory metal strips to form a medical device comprised of the joined proximal segments of the proximal tether memory metal strips, the proximal basket, the basket connector tether memory metal strips and the distal basket, the medical device having a medical device length extending at least from the distal basket to at least the joined proximal segments of the proximal tether memory metal strips and a medical device width generally perpendicular to the medical device length; and
 
g) inserting the medical device into a catheter comprising a catheter interior having an interior width, an open catheter proximal end leading to the catheter interior, an open catheter distal end leading to the catheter interior, the catheter comprised of a biocompatible material, wherein the medical device comprises a collapsed state wherein the medical device width is less than the catheter interior width and a relaxed state wherein the medical device width is greater than the catheter interior width, wherein the catheter is configured to envelope the medical device when the medical device is in the collapsed state, and further wherein the catheter interior width is less than the first tube outer width.
 
     The present disclosure also provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire, the distal body comprising a distal body perimeter separating a distal body interior from a distal body exterior, a proximal end having a proximal end center, a distal end having distal end center, a distal body length extending from the proximal end to the distal end, a longitudinal axis extending through the proximal end center and the distal end center and parallel to the distal body length, a proximal junction forming the proximal end of the distal body, a basket comprising a proximal portion comprised of a plurality of proximal cells spaced about the distal body perimeter and formed by a plurality of basket memory metal strips and a distal portion located adjacent to a distal end of the basket and connected to the proximal portion at at least one connection point, the proximal portion comprising a proximal portion interior, the distal portion comprised of a plurality of distal braided mesh openings formed by a plurality of woven linear strands, the distal portion having a perimeter, each woven linear strand rotating about the distal portion perimeter relative to the distal body longitudinal axis a plurality of times in a helical fashion, the distal basket comprising a basket interior, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width; and a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. 
     Optionally, in the relaxed state, the median surface area of the proximal cells is larger than the median surface area of the distal braided mesh openings. Optionally, in the relaxed state, the median radial force of the distal portion is substantially less than the median radial force of the proximal portion. Optionally, the radial force of the proximal portion through its connection to the distal portion at the at least one connection point is configured to cause the distal portion to move to the relaxed state when the proximal portion moves from the collapsed state to the relaxed state. Optionally, the proximal portion and the distal portion each have a length generally parallel to the distal body length, the proximal portion and distal portion lengths configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal portion is configured to elongate a greater percentage as compared to the elongation of the proximal portion. Optionally, the woven linear strands rotate about the distal portion perimeter relative to the distal body longitudinal axis a fewer number of times per unit of distance in the collapsed state as compared to the relaxed state. 
     Optionally, in the relaxed state, the distal portion comprises at least a segment distal to the proximal portion. Optionally, the distal portion is located in the proximal portion interior. Optionally, the distal basket further comprises a distal junction comprising a proximal end, the proximal end of the distal junction forming the distal end of the basket, wherein the basket strips and the distal woven strands are attached to the distal junction and the at least one connection point is the distal junction. Optionally, the distal junction is a tube. Optionally, the proximal portion, but not the distal portion, is configured to alter the shape of a curved intracranial artery. Optionally, in the relaxed state, the distal portion is more flexible than the proximal portion. Optionally, distal portion in the relaxed state comprises a tapered region in which the distal body height and width decrease as the woven linear strands approach the distal end of the distal basket. Optionally, in the relaxed state, the basket interior is substantially hollow. Optionally, the proximal portion comprises a distal end comprising between two and four basket memory metal strip distal ends and further wherein each woven linear strand comprises a proximal end attached to a basket memory metal strip distal end. Optionally, the distal portion comprises at least two woven linear strands attached to each basket memory metal strip distal end. Optionally, in the relaxed state, the proximal portion comprises an interior surface facing the distal body interior and the distal portion comprises an outer surface facing and connected to the proximal portion interior surface, and further wherein at least a segment of the distal portion is interior to the proximal portion in the relaxed state. Optionally, each woven linear strand comprises a free proximal end and further wherein all free proximal ends of the woven linear strands are located in the proximal portion interior in the relaxed state. Optionally, the distal portion is configured to elongate proximally and distally relative to the proximal portion and the at least one connection point upon moving from the relaxed state to the collapsed state. Optionally, the distal portion is attached to the proximal portion by at least two connection points, and further wherein said at least two connection points are located a different distance from the proximal junction in the relaxed state, and further wherein said at least two connection points are located a different distance from the proximal junction in the collapsed state. Optionally, in the relaxed state, the distal portion impedes blood flow to a greater extent than the proximal portion when the proximal portion and the distal portion are placed in a blood vessel. Optionally the distal portion is configured to reduce blood flow by at least 25% when the distal portion is placed in a blood vessel. Optionally, the distal body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal cell and a proximal end, the proximal ends of the proximal strips converging at the proximal junction. Optionally, in the relaxed state, the proximal portion comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the proximal junction and between 150 degrees and 180 degrees relative to each other, and further wherein the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the proximal junction, each of the distal crowns forming a portion of a proximal cell, 
     wherein each distal crown in the first and second pair of distal crowns forms part of a different enlarged proximal cell, each enlarged proximal cell having a center, 
     wherein the centers of the enlarged proximal cells of the first pair of distal crowns are approximately 180 degrees relative to each other (i.e., 150 degrees to 180 degrees relative to each other) and approximately 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns (i.e., between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns),
 
wherein the surface area of the enlarged proximal cells in the relaxed state is greater than the surface area of the other cells of the basket,
 
wherein the enlarged proximal cells are configured to allow a thrombus to pass therethrough and into the basket interior.
 
     Optionally, the distal portion is radiopaque. Optionally, the system is used in a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) moving the blood clot into the basket interior; and f) moving the distal body proximally out of the blood vessel. Optionally, the method further includes applying contrast dye proximally and distally to the blood clot. 
     In still further embodiments, the present disclosure provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body comprising a distal body proximal end comprising a distal body proximal junction attached to the pull wire, a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. The distal body may include a distal body outer body (also referred to herein as the proximal portion of the distal body) extending from the distal body proximal end to the distal body distal end, the distal body outer body comprising the distal body proximal junction and the distal body distal junction, the distal body outer body comprising a distal body outer body perimeter separating a distal body outer body interior from a distal body outer body exterior, the distal body outer body comprising a basket comprised of a plurality of cells spaced about the distal body outer body perimeter and formed by a plurality of basket memory metal strips, wherein at least some of the basket memory metal strips are located at a distal end of the basket, wherein each of the basket strips located at the distal end of the basket have a distal end, and wherein each of the distal ends of the basket strips located at the distal end of the basket converge at, and are attached to, the distal junction. The distal body may also include a distal body inner body (also referred to herein as the distal portion of the distal body) comprised of a plurality of braided mesh openings formed by a plurality of woven linear strands, the distal body inner body having a distal body inner body perimeter, each woven linear strand rotating about the distal body inner body perimeter relative to the distal body longitudinal axis a plurality of times in a helical fashion, the distal body inner body comprising a distal body inner body proximal end and a distal body inner body distal end. Optionally, in the relaxed state, the proximal ends of at least some of the woven linear strands are adjacent to the interior surface of at least some of the basket memory metal strips. 
     Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, at least some (preferably all) of the woven linear strand comprises a free proximal end and a distal end attached to the distal junction. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the braided mesh openings. Optionally, the distal body inner body and the distal body outer body each have a length generally parallel to the distal body length, the distal body inner body and distal body outer body lengths configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal body inner body is configured to elongate a greater percentage than the length of the distal body outer body. Optionally, upon moving from the relaxed state to the collapsed state, the distal body inner body is configured to elongate proximally within the distal body outer body interior toward the distal body proximal junction. Optionally, in the relaxed state, the distal body inner body proximal end is located a first distance distal from the distal body proximal junction. Optionally, in the collapsed state, the distal body inner body proximal end is located a second distance distal from the proximal junction, the second distance less than the first distance. Optionally, in the collapsed state and in the relaxed state, the distal body inner body is located in the distal body outer body interior. Optionally, the woven linear strands rotate about the distal body inner body perimeter relative to the distal body longitudinal axis a fewer number of times per unit of length in the collapsed state as compared to the relaxed state. Optionally, the basket memory metal strips are located on the distal body outer body perimeter and comprise an interior surface facing the distal body outer body interior and an exterior surface opposite the interior surface, and further wherein in the relaxed state, at least a portion of the woven linear strands are adjacent to and preferably contact the interior surface of at least a portion of the basket memory metal strips. Optionally, the proximal ends of the woven linear strands are free floating within the distal body outer body interior. 
     Optionally, the distal junction is the sole connection point of the distal body inner body to the distal body outer body. Optionally, the distal junction is a tube. Optionally, in the relaxed state, the distal body outer body, but not the distal body inner body, is configured to alter the shape of a curved intracranial artery. Optionally, in the relaxed state, the distal body inner body is more flexible than the distal body outer body and wherein, in the relaxed state, the median radial force of the distal body inner body is substantially less than the median radial force of the distal body outer body. Optionally, wherein the distal body inner body comprises a distal body inner body height and a distal body inner body width, wherein the distal body inner body in the relaxed state comprises a distal body inner body distal tapered region in which the distal body inner body height and the distal body inner body width decrease as the strand distal ends approach the distal junction, wherein the distal body outer body comprises a distal body outer body height and a distal body outer body width, and further wherein the distal body outer body comprises a tapered region in which the distal body inner body height and the distal body inner body width decrease as the distal ends of the basket memory metal strips located at the distal end of the basket approach the distal junction. Optionally, in the relaxed state, the distal body inner body impedes blood flow to a greater extent than the distal body outer body when the distal body outer body and the distal body inner body are placed in a blood vessel. Optionally, the distal body inner body is configured to reduce blood flow by at least 25% when the distal body inner body is placed in a blood vessel. Optionally, in the relaxed state, the distal body outer body comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the proximal junction and between 150 degrees and 180 degrees relative to each other. Optionally, the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns. Optionally, distal crowns in the second pair of distal crowns are located approximately the same distance from the proximal junction, each of the distal crowns forming a portion of a cell. Optionally, each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell. Optionally, each enlarged cell has a center, wherein the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns. Optionally, the surface area of the enlarged cells in the relaxed state is greater than the surface area of the other cells of the basket. Optionally, the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, in the relaxed state, the distal body inner body is located distally relative to the first and second pair of distal crowns. Optionally, the distal body inner body is radiopaque. Optionally, in the relaxed state, the distal body inner body length is no more than about 33% of the distal body outer body length. 
     The present disclosure also provides a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) 
     moving the blood clot into an interior of the distal body outer body; and f) moving the distal body proximally out of the blood vessel. 
     Optionally, the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. 
     In still further embodiments, the present disclosure also provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body comprising a distal body proximal end comprising a distal body proximal junction attached to the pull wire, a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. The distal body may include a distal body outer body extending from the distal body proximal end to the distal body distal end, the distal body outer body comprising the distal body proximal junction and the distal body distal junction, the distal body outer body comprising a distal body outer body perimeter separating a distal body outer body interior from a distal body outer body exterior, the distal body outer body comprising a basket comprised of a plurality of cells spaced about the distal body outer body perimeter and formed by a plurality of basket memory metal strips. Optionally, at least some of the basket memory metal strips are located at a distal end of the basket, wherein each of the basket strips located at the distal end of the basket have a distal end, and wherein each of the distal ends of the basket strips located at the distal end of the basket converge at, and are attached to, the distal junction. Optionally, the system further includes a distal body inner body comprised of a plurality of braided mesh openings formed by a plurality of woven linear strands, the distal body inner body having a distal body inner body perimeter, each woven linear strand rotating about the distal body inner body perimeter relative to the distal body longitudinal axis a plurality of times in a helical fashion, the distal body inner body comprising a distal body inner body proximal end and a distal body inner body distal end. Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the woven linear strands comprise a proximal end and a distal end, and at least some (preferably all) of the distal ends of the woven linear strands are attached to the distal junction. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the braided mesh openings. Optionally, the distal body inner body and the distal body outer body each have a length generally parallel to the distal body length, the distal body inner body and distal body outer body lengths configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal body inner body is configured to elongate a greater percentage than the length of the distal body outer body. Optionally, upon moving from the relaxed state to the collapsed state, the distal body inner body is configured to elongate proximally within the distal body outer body interior toward the distal body proximal junction. Optionally, in the relaxed state, the distal body inner body proximal end is located a first distance distal from the distal body proximal junction. Optionally, in the collapsed state, the distal body inner body proximal end is located a second distance distal from the proximal junction, the second distance less than the first distance. Optionally, in the collapsed state and in the relaxed state, the distal body inner body is located in the distal body outer body interior. Optionally, the woven linear strands rotate about the distal body inner body perimeter relative to the distal body longitudinal axis a fewer number of times per unit of length in the collapsed state as compared to the relaxed state. Optionally, the proximal ends of at least some (preferably all) of the woven linear strands converge at and are attached to a distal body inner body proximal junction. Optionally, the distal body inner body proximal junction forms the proximal end of the distal body inner body and is free floating within the distal body outer body interior. 
     Optionally, the basket memory metal strips are located on the distal body outer body perimeter and comprise an interior surface facing the distal body outer body interior and an exterior surface opposite the interior surface, and further wherein in the relaxed state, at least a portion of the woven linear strands contact the interior surface of at least a portion of the basket memory metal strips. Optionally, the distal body inner body proximal junction is located approximately in the center of the distal body height and the distal body width in the relaxed state. Optionally, the distal body inner body in the relaxed state comprises a distal body inner body proximal tapered region in which the distal body inner body height and the distal body inner body width decrease as the proximal ends of the woven linear strands approach the distal body inner body proximal junction. Optionally, the distal junction is the sole connection point of the distal body inner body to the distal body outer body. Optionally, the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, the proximal ends of each of the woven linear strands converge at and are attached to the distal body inner body proximal junction and further wherein the distal ends of each of the woven linear strands converge at and are attached to the distal body distal junction. Optionally, in the relaxed state, the distal body inner body is more flexible than the distal body outer body and wherein, in the relaxed state, the median radial force of the distal body inner body is substantially less than the median radial force of the distal body outer body. Optionally, the distal body inner body comprises a distal body inner body height and a distal body inner body width, wherein the distal body inner body in the relaxed state comprises a distal body inner body distal tapered region in which the distal body inner body height and the distal body inner body width decrease as the strand distal ends approach the distal junction, wherein the distal body outer body comprises a distal body outer body height and a distal body outer body width, and further wherein the distal body outer body comprises a tapered region in which the distal body inner body height and the distal body inner body width decrease as the distal ends of the basket memory metal strips located at the distal end of the basket approach the distal junction. Optionally, in the relaxed state, the distal body inner body impedes blood flow to a greater extent than the distal body outer body when the distal body outer body and the distal body inner body are placed in a blood vessel. Optionally, the distal body inner body is configured to reduce blood flow by at least 25% when the distal body inner body is placed in a blood vessel. Optionally, in the relaxed state, the distal body outer body comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the proximal junction and between 150 degrees and 180 degrees relative to each other. Optionally, the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction. Optionally, the second pair of distal crowns are located distally relative to the first pair of distal crowns. Optionally, each of the distal crowns in the second pair of distal crowns is located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns. Optionally, the distal crowns in the second pair of distal crowns located approximately the same distance from the proximal junction, each of the distal crowns forming a portion of a cell. Optionally, each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center. Optionally, the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns. Optionally, the surface area of the enlarged cells in the relaxed state is greater than the surface area of the other cells of the basket. Optionally, the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, in the relaxed state, the distal body inner body is located distally relative to the first and second pair of distal crowns. Optionally, the distal body inner body is radiopaque. Optionally, in the relaxed state, the distal body inner body length is no more than about 33% of the distal body outer body length. 
     In still further embodiments, the present disclosure provides a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) moving the blood clot into an interior of the distal body outer body; and f) moving the distal body proximally out of the blood vessel. 
     In still further embodiments, the present disclosure provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body comprising a distal body proximal end comprising a distal body proximal junction (which may be attached to the pull wire), a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. The distal body may comprise a distal body outer body extending from the distal body proximal end to the distal body distal end, the distal body outer body comprising the distal body proximal junction and the distal body distal junction. The distal body outer body may comprise a distal body outer body perimeter separating a distal body outer body interior from a distal body outer body exterior. The distal body outer body may comprise a basket comprised of a plurality of cells spaced about the distal body outer body perimeter and formed by a plurality of basket memory metal strips. At least some of the basket memory metal strips may be located at a distal end of the basket. Each of the basket strips located at the distal end of the basket may have a distal end, and each of the distal ends of the basket strips located at the distal end of the basket may converge at, and be attached to, the distal junction. The distal body may also include a distal body inner body comprised of a plurality of braided mesh openings formed by a plurality of woven linear strands. The distal body inner body may have a distal body inner body perimeter. Each woven linear strand may rotate about the distal body inner body perimeter relative to the distal body longitudinal axis a plurality of times in a helical fashion. The distal body inner body may comprise a distal body inner body proximal end and a distal body inner body distal end. Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the woven linear strands comprise a proximal end and a distal end, and at least some of the distal ends of the woven linear strands are attached to the distal junction. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the braided mesh openings. Optionally, the distal body inner body and the distal body outer body each have a length generally parallel to the distal body length, and optionally, the distal body inner body and distal body outer body lengths are configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal body inner body is configured to elongate a greater percentage than the length of the distal body outer body. Optionally, upon moving from the relaxed state to the collapsed state, the distal body inner body is configured to elongate proximally within the distal body outer body interior toward the distal body proximal junction. Optionally, in the relaxed state, the distal body inner body proximal end is located a first distance distal from the distal body proximal junction. Optionally, in the collapsed state, the distal body inner body proximal end is located a second distance distal from the distal body proximal junction, the second distance less than the first distance. Optionally, in the collapsed state and in the relaxed state, the distal body inner body is located in the distal body outer body interior. Optionally, the woven linear strands rotate about the distal body inner body perimeter relative to the distal body longitudinal axis a fewer number of times per unit of length in the collapsed state as compared to the relaxed state. Optionally, the proximal ends of at least some of the woven linear strands converge at and are attached to a distal body inner body proximal junction. Optionally, the distal body inner body proximal junction forms the proximal end of the distal body inner body. 
     Optionally, the system further comprises a tether connecting the distal body proximal junction to the distal body inner body proximal junction. Optionally, the tether is a segment of the pull wire. Optionally, the tether is comprised of a conductive material. Optionally, the tether is comprised of a synthetic polymer. Optionally, the tether comprises a proximal end attached to the distal body proximal junction and a distal end attached to the distal body inner body proximal junction. (The attachment can be soldering, welding, crimping, etc.). Optionally, the tether is located approximately in the center of the distal body height and the distal body width of the distal body when the distal body is in the relaxed state and the tether is generally parallel to the distal body longitudinal axis when the distal body is in the relaxed state. Optionally, the basket memory metal strips are located on the distal body outer body perimeter and comprise an interior surface facing the distal body outer body interior and an exterior surface opposite the interior surface, and further wherein in the relaxed state, at least some of the woven linear strands contact the interior surface of at least some of the basket memory metal strips. Optionally, the distal body inner body proximal junction is located approximately in the center of the distal body height and the distal body width in the relaxed state. Optionally, the distal body inner body comprises a distal body inner body height and a distal body inner body width and wherein the distal body inner body in the relaxed state comprises a distal body inner body proximal tapered region in which the distal body inner body height and the distal body inner body width decrease as the proximal ends of the woven linear strands approach the distal body inner body proximal junction. Optionally, the distal junction is the sole connection point of the distal body inner body to the distal body outer body. Optionally, the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, the proximal ends of each of the woven linear strands converge at and are attached to the distal body inner body proximal junction and further wherein the distal ends of each of the woven linear strands converge at and are attached to the distal body distal junction. Optionally, in the relaxed state, the distal body inner body is more flexible than the distal body outer body and wherein, in the relaxed state, the median radial force of the distal body inner body is substantially less than the median radial force of the distal body outer body. Optionally, the distal body inner body comprises a distal body inner body height and a distal body inner body width, wherein the distal body inner body in the relaxed state comprises a distal body inner body distal tapered region in which the distal body inner body height and the distal body inner body width decrease as the strand distal ends approach the distal junction, wherein the distal body outer body comprises a distal body outer body height and a distal body outer body width, and further wherein the distal body outer body comprises a tapered region in which the distal body inner body height and the distal body inner body width decrease as the distal ends of the basket memory metal strips located at the distal end of the basket approach the distal junction. Optionally, in the relaxed state, the distal body inner body impedes blood flow to a greater extent than the distal body outer body when the distal body outer body and the distal body inner body are placed in a blood vessel. Optionally, the distal body inner body is configured to reduce blood flow by at least 25% when the distal body inner body is placed in a blood vessel. Optionally, in the relaxed state, the distal body outer body comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the proximal junction and located between 150 degrees and 180 degrees relative to each other, and further wherein the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the distal body proximal junction, each of the distal crowns forming a portion of a cell, wherein each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center, wherein the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns, wherein the surface area of the enlarged cells in the relaxed state is greater than the surface area of the other cells of the basket, and wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. 
     Optionally, in the relaxed state, the distal body inner body is located distally relative to the first and second pair of distal crowns. Optionally, the distal body inner body is radiopaque. Optionally, in the relaxed state, the distal body inner body length is no more than about 33% of the distal body outer body length. 
     In still further embodiments, the present disclosure provides a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) moving the blood clot into the interior of the distal body outer body; and f) moving the distal body proximally out of the blood vessel. 
     Optionally the system further comprises a tether connecting the distal body proximal junction to the distal body inner body proximal junction. Optionally, the method further comprises propagating an electrical charge from the pull wire, through the tether, and to the distal body inner body. 
     In still further embodiments, the present disclosure provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire and comprising a distal body proximal end comprising a distal body proximal junction, a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. The distal body may comprise a distal body outer body extending from the distal body proximal end to the distal body distal end, the distal body outer body comprising the distal body proximal junction and the distal body distal junction, the distal body outer body comprising a distal body outer body perimeter separating a distal body outer body interior from a distal body outer body exterior, the distal body outer body comprising a basket comprised of a plurality of cells spaced about the distal body outer body perimeter and formed by a plurality of basket memory metal strips. Optionally, at least some of the basket memory metal strips are located at a distal end of the basket. Optionally, each of the basket memory metal strips located at the distal end of the basket have a distal end. Optionally, each of the distal ends of the basket memory metal strips located at the distal end of the basket converge at, and are attached to, the distal body distal junction. The distal body may also include a distal body inner body comprised of a plurality of braided mesh openings formed by a plurality of woven linear strands, the distal body inner body having a distal body inner body perimeter, each woven linear strand rotating about the distal body inner body perimeter relative to the distal body longitudinal axis a plurality of times in a helical fashion, the distal body inner body comprising a distal body inner body proximal end and a distal body inner body distal end. 
     Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the woven linear strands comprise a proximal end and a distal end, and at least some of the distal ends of the woven linear strands are attached to the distal junction. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the braided mesh openings. Optionally, the distal body inner body and the distal body outer body each have a length generally parallel to the distal body length, the distal body inner body and distal body outer body lengths configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal body inner body is configured to elongate a greater percentage than the length of the distal body outer body. Optionally, upon moving from the relaxed state to the collapsed state, the distal body inner body is configured to elongate proximally within the distal body outer body interior toward the distal body proximal junction. Optionally, in the relaxed state, the distal body inner body proximal end is located a first distance distal from the distal body proximal junction. Optionally, in the collapsed state, the distal body inner body proximal end is located a second distance distal from the distal body proximal junction, the second distance less than the first distance. Optionally, in the collapsed state and in the relaxed state, the distal body inner body is located in the distal body outer body interior. Optionally, the woven linear strands rotate about the distal body inner body perimeter relative to the distal body longitudinal axis a fewer number of times per unit of length in the collapsed state as compared to the relaxed state. Optionally, the distal body inner body comprises an active agent when the distal body inner body is in the catheter interior. 
     Optionally, the active agent is selected from the group consisting of a reolytic agent, a neuroprotective agent and combinations thereof. Optionally, the active agent is located in the distal body inner body interior. Optionally, the active agent is too large to pass through the braided mesh openings when the distal body inner body is located in the catheter interior. Optionally, the woven linear strands are coated with the active agent. Optionally, the basket memory metal strips are not coated with the active agent. Optionally, the proximal ends of at least some of the woven linear strands converge at and are attached to a distal body inner body proximal junction, the distal body inner proximal junction located distal relative to the distal body proximal junction. Optionally, the distal body inner body proximal junction forms the proximal end of the distal body inner body. Optionally, the system further comprises a tether connecting the distal body proximal junction to the distal body inner body proximal junction. Optionally, the tether is a segment of the pull wire. Optionally, the tether is comprised of a conductive material. Optionally, the tether is comprised of a synthetic polymer. Optionally, the tether comprises a proximal end attached to the distal body proximal junction and a distal end attached to the distal body inner body proximal junction. Optionally, the tether is located approximately in the center of the distal body height and the distal body width of the distal body when the distal body is in the relaxed state and the tether is generally parallel to the distal body longitudinal axis when the distal body is in the relaxed state. Optionally, the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, the proximal ends of each of the woven linear strands converge at and are attached to the distal body inner body proximal junction and further wherein the distal ends of each of the woven linear strands converge at and are attached to the distal body distal junction. Optionally, the basket memory metal strips are located on the distal body outer body perimeter and comprise an interior surface facing the distal body outer body interior and an exterior surface opposite the interior surface, and further wherein in the relaxed state, at least some of the woven linear strands contact the interior surface of at least some of the basket memory metal strips. Optionally, the distal junction is the sole connection point of the distal body inner body to the distal body outer body. Optionally, in the relaxed state, the distal body inner body is more flexible than the distal body outer body and wherein, in the relaxed state, the median radial force of the distal body inner body is substantially less than the median radial force of the distal body outer body. Optionally, the distal body inner body comprises a distal body inner body height and a distal body inner body width, wherein the distal body inner body in the relaxed state comprises a distal body inner body distal tapered region in which the distal body inner body height and the distal body inner body width decrease as the strand distal ends approach the distal junction, wherein the distal body outer body comprises a distal body outer body height and a distal body outer body width, and further wherein the distal body outer body comprises a tapered region in which the distal body inner body height and the distal body inner body width decrease as the distal ends of the basket memory metal strips located at the distal end of the basket approach the distal junction. Optionally, in the relaxed state, the distal body inner body impedes blood flow to a greater extent than the distal body outer body when the distal body outer body and the distal body inner body are placed in a blood vessel. Optionally, the distal body inner body is configured to reduce blood flow by at least 25% when the distal body inner body is placed in a blood vessel. Optionally, in the relaxed state, the distal body outer body comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the proximal junction and located between 150 degrees and 180 degrees relative to each other, and further wherein the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the proximal junction, each of the distal crowns forming a portion of a cell, wherein each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center, wherein the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns, wherein the surface area of the enlarged cells in the relaxed state is greater than the surface area of the other cells of the basket, wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. 
     Optionally, in the relaxed state, the distal body inner body is located distally relative to the first and second pair of distal crowns. Optionally, the distal body inner body is radiopaque. Optionally, in the relaxed state, the distal body inner body length is no more than about 33% of the distal body outer body length. 
     The present disclosure provides a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) moving the blood clot into the interior of the distal body outer body; f) before, after or simultaneous with step e) delivering the active agent from the distal body inner body into the blood vessel; and g) moving the distal body proximally out of the blood vessel. 
     Optionally, the proximal ends of at least some of the woven linear strands converge at and are attached to a distal body inner body proximal junction, the distal body inner proximal junction located distal relative to the distal body proximal junction, and further wherein the system further comprises a tether connecting the distal body proximal junction to the distal body inner body proximal junction. Optionally, the method further comprises propagating an electrical charge from the pull wire, through the tether, and to the distal body inner body to deliver the active agent from the distal body inner body into the blood vessel. 
     The present disclosure also provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire and comprising a distal body proximal end comprising a distal body proximal junction, a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. The distal body may comprise a distal body outer body extending from the distal body proximal end to the distal body distal end, the distal body outer body comprising the distal body proximal junction and the distal body distal junction, the distal body outer body comprising a distal body outer body perimeter separating a distal body outer body interior from a distal body outer body exterior, the distal body outer body comprising a basket comprised of a plurality of cells spaced about the distal body outer body perimeter and formed by a plurality of basket memory metal strips. Optionally, at least some of the basket memory metal strips are located at a distal end of the basket. Optionally, each of the basket memory metal strips located at the distal end of the basket have a distal end. Optionally, each of the distal ends of the basket memory strips located at the distal end of the basket converge at, and are attached to, the distal body distal junction. Optionally, the distal body may also include a distal body inner body comprised of a plurality of braided mesh openings formed by a plurality of woven linear strands, the distal body inner body having a distal body inner body perimeter, each woven linear strand rotating about the distal body inner body perimeter relative to the distal body longitudinal axis a plurality of times in a helical fashion, the distal body inner body comprising a distal body inner body proximal end and a distal body inner body distal end. 
     Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the woven linear strands comprise a proximal end and a distal end, and at least some of the distal ends of the woven linear strands are attached to the distal junction. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the braided mesh openings. Optionally, the distal body inner body and the distal body outer body each have a length generally parallel to the distal body length, the distal body inner body and distal body outer body lengths configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal body inner body is configured to elongate a greater percentage than the length of the distal body outer body. Optionally, upon moving from the relaxed state to the collapsed state, the distal body inner body is configured to elongate proximally within the distal body outer body interior toward the distal body proximal junction. Optionally, in the relaxed state, the distal body inner body proximal end is located a first distance distal from the distal body proximal junction. Optionally, in the collapsed state, the distal body inner body proximal end is located a second distance distal from the distal body proximal junction, the second distance less than the first distance. Optionally, in the collapsed state and in the relaxed state, the distal body inner body is located in the distal body outer body interior. Optionally, the woven linear strands rotate about the distal body inner body perimeter relative to the distal body longitudinal axis a fewer number of times per unit of length in the collapsed state as compared to the relaxed state. Optionally, the pull wire is in the form of an active agent delivery catheter having an open proximal end and an open distal end, the active agent delivery catheter configured to deliver an active agent to the distal body. 
     Optionally, the active agent delivery catheter distal end is located distal relative to the distal body proximal junction. Optionally, the active agent delivery catheter comprises a wall, wherein the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end and a proximal end attached to the wall of the active agent delivery catheter. 
     The present disclosure also provides a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing a system comprising a distal body outer body having one or more features described above, a distal body inner body located in the distal body outer body interior and having one or more features described above, a pull wire, a catheter and an active agent delivery catheter; b) positioning the system in the blood vessel; c) deploying the distal body outer body and distal body inner body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) moving the blood clot into the interior of the distal body outer body; f) before, after or simultaneous with step e), delivering an active agent from the active agent delivery catheter to the into the blood vessel; and g) moving the distal body outer body and distal body inner body proximally out of the blood vessel. 
     In still further embodiments, the present disclosure provides a system for removing objects from an interior lumen of an animal. The system may include a pull wire having a proximal end and a distal end. Optionally, the system may also include a distal body attached to the pull wire and comprising a distal body proximal end comprising a distal body proximal junction, a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. Optionally, the distal body further comprises a distal body outer body that may extend from the distal body proximal end to the distal body distal end, the distal body outer body may comprise the distal body proximal junction and the distal body distal junction, the distal body outer body may comprise a distal body outer body perimeter separating a distal body outer body interior from a distal body outer body exterior, the distal body outer body may comprise a basket comprised of a plurality of cells spaced about the distal body outer body perimeter and formed by a plurality of basket memory metal strips. Optionally, at least some of the basket memory metal strips are located at a distal end of the basket, wherein each of the basket memory metal strips located at the distal end of the basket have a distal end, and wherein each of the distal ends of the basket memory metal strips located at the distal end of the basket converge at, and are attached to, the distal body distal junction. Optionally, the distal body further comprises a distal body inner body that may be comprised of a plurality of braided mesh openings formed by a plurality of woven linear strands, the distal body inner body may have a distal body inner body perimeter, each woven linear strand rotating about the distal body inner body perimeter relative to the distal body longitudinal axis a plurality of times in a helical fashion, the distal body inner body may comprise a distal body inner body proximal end and a distal body inner body distal end. Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the woven linear strands comprise a proximal end and a distal end, and at least some of the distal ends of the woven linear strands are attached to the distal body distal junction. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the braided mesh openings. Optionally, the distal body inner body and the distal body outer body each have a length generally parallel to the distal body length, the distal body inner body and distal body outer body lengths configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal body inner body is configured to elongate a greater percentage than the length of the distal body outer body. Optionally, upon moving from the relaxed state to the collapsed state, the distal body inner body is configured to elongate proximally within the distal body outer body interior toward the distal body proximal junction. Optionally, in the relaxed state, the distal body inner body proximal end is located a first distance distal from the distal body proximal junction. Optionally, in the collapsed state, the distal body inner body proximal end is located a second distance distal from the distal body proximal junction, the second distance less than the first distance. Optionally, in the collapsed state and in the relaxed state, the distal body inner body is located in the distal body outer body interior. Optionally, the woven linear strands rotate about the distal body inner body perimeter relative to the distal body longitudinal axis a fewer number of times per unit of length in the collapsed state as compared to the relaxed state. Optionally, the proximal ends of at least some of the woven linear strands converge at and are attached to a distal body inner body proximal junction. Optionally, the distal body inner body proximal junction forms the proximal end of the distal body inner body. Optionally, the system further comprises a tether connecting the distal body proximal junction to the distal body inner body proximal junction, the tether comprising a segment in the form of a helical coil, the helical coil having a coil length generally parallel to the distal body length, the helical coil having an expanded state in which the helical coil has a first length and a relaxed state in which the helical coil has a second length, the first length greater than the second length. 
     Optionally, the helical coil is adjacent to the distal body inner body proximal junction. Optionally, the helical coil is configured to move to the expanded state when tension is exerted on the tether. Optionally, the tether is a segment of the pull wire. Optionally, the tether is comprised of a conductive material. Optionally, the tether is comprised of a synthetic polymer. Optionally, the tether comprises a proximal end attached to the distal body proximal junction and a distal end attached to the distal body inner body proximal junction. Optionally, the tether is located approximately in the center of the distal body height and the distal body width when the distal body is in the relaxed state and the tether is generally parallel to the distal body longitudinal axis when the distal body is in the relaxed state. Optionally, the basket memory metal strips are located on the distal body outer body perimeter and comprise an interior surface facing the distal body outer body interior and an exterior surface opposite the interior surface, and further wherein in the relaxed state, at least some of the woven linear strands contact the interior surface of at least some of the basket memory metal strips. Optionally, the distal body inner body proximal junction is located approximately in the center of the distal body height and the distal body width in the relaxed state. Optionally, the distal body inner body comprises a distal body inner body height and a distal body inner body width and wherein the distal body inner body in the relaxed state comprises a distal body inner body proximal tapered region in which the distal body inner body height and the distal body inner body width decrease as the proximal ends of the woven linear strands approach the distal body inner body proximal junction. Optionally, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction. Optionally, the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, the proximal ends of each of the woven linear strands converge at and are attached to the distal body inner body proximal junction and further wherein the distal ends of each of the woven linear strands converge at and are attached to the distal body distal junction. Optionally, in the relaxed state, the distal body inner body is more flexible than the distal body outer body and wherein, in the relaxed state, the median radial force of the distal body inner body is substantially less than the median radial force of the distal body outer body. Optionally, the distal body inner body comprises a distal body inner body height and a distal body inner body width, wherein the distal body inner body in the relaxed state comprises a distal body inner body distal tapered region in which the distal body inner body height and the distal body inner body width decrease as the woven linear strand distal ends approach the distal body distal junction, wherein the distal body outer body comprises a distal body outer body height and a distal body outer body width, and further wherein the distal body outer body comprises a tapered region in which the distal body outer body height and the distal body outer body width decrease as the distal ends of the basket memory metal strips located at the distal end of the basket approach the distal body distal junction. Optionally, in the relaxed state, the distal body inner body impedes blood flow to a greater extent than the distal body outer body when the distal body outer body and the distal body inner body are placed in a blood vessel. Optionally, wherein, prior to removal of an obstruction, the distal body inner body is configured to automatically reduce blood flow when the distal body inner body is placed in a blood vessel. Optionally, in the relaxed state, the distal body outer body comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal junction and located between 150 degrees and 180 degrees relative to each other, and further wherein the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the distal body proximal junction, each of the distal crowns forming a portion of a cell, wherein each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center, wherein the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns, 
     wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, in the relaxed state, the distal body inner body proximal junction is located distally relative to the first and second pair of distal crowns. Optionally, the distal body inner body is radiopaque. Optionally, in the relaxed state, the distal body inner body length is no more than about 33% of the distal body outer body length. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, the distal body inner body proximal end is substantially closed. Optionally, the system is used in a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) moving the blood clot into the interior of the distal body outer body; and f) moving the distal body proximally out of the blood vessel. Optionally, the method further comprises propagating an electrical charge from the pull wire, through the tether, and to the distal body inner body. 
     In still further embodiments, the present disclosure provides a system for removing objects from an interior lumen of an animal. The system may include a pull wire having a proximal end and a distal end. The system may also include a distal body attached to the pull wire and comprising a distal body proximal end comprising a distal body proximal junction, a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. The distal body may include a distal body outer body comprising a distal body outer body length extending from the distal body proximal end to the distal body distal end. The distal body outer body may include the distal body proximal junction and the distal body distal junction. The distal body outer body may also include a distal body outer body perimeter separating a distal body outer body interior from a distal body outer body exterior. The distal body outer body may also include a basket comprised of a plurality of cells spaced about the distal body outer body perimeter and formed by a plurality of basket memory metal strips. Optionally, at least some of the basket memory metal strips are located at a distal end of the basket. Optionally, each of the basket memory metal strips located at the distal end of the basket have a distal end. Optionally, each of the distal ends of the basket memory metal strips located at the distal end of the basket converge at, and are attached to, the distal body distal junction. Optionally, the distal body may also include a distal body inner body comprised of a film comprising a plurality of openings. The distal body inner body may have a distal body inner body proximal end, a distal body inner body distal end and a distal body inner body length extending from the distal body inner body proximal end to the distal body inner body distal end. Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the openings. Optionally, in the relaxed state, the median surface area of the openings is no more than about 200 microns. Optionally, the distal body inner body is connected to the distal body outer body at at least one connection point. Optionally, in the collapsed state and in the relaxed state, the distal body inner body is located in the distal body outer body interior. Optionally, in the relaxed state, the distal body inner body is generally conical in shape with an open generally circular proximal end and an apex opposite the open generally circular proximal end. Optionally, the distal body inner body further comprises a closed distal end attached to the distal body distal junction. Optionally, the basket memory metal strips are located on the distal body outer body perimeter and comprise an interior surface facing the distal body outer body interior and an exterior surface opposite the interior surface, and further wherein in the relaxed state, the film contacts the interior surface of at least some of the basket memory metal strips. Optionally, the film comprises an outer surface facing and attached to the interior surface of at least some of the basket memory metal strips. Optionally, the distal body distal junction is the sole connection point of the distal body inner body to the distal body outer body. Optionally, the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, in the relaxed state, the distal body inner body is more flexible than the distal body outer body and wherein, in the relaxed state, the median radial force of the distal body inner body is substantially less than the median radial force of the distal body outer body. Optionally, the distal body inner body comprises a distal body inner body height and a distal body inner body width, wherein the distal body inner body in the relaxed state comprises a distal body inner body distal tapered region in which the distal body inner body height and the distal body inner body width decrease as the film approaches the distal body distal junction, wherein the distal body outer body comprises a distal body outer body height and a distal body outer body width, and further wherein the distal body outer body comprises a tapered region in which the distal body outer body height and the distal body outer body width decrease as the distal ends of the basket memory metal strips located at the distal end of the basket approach the distal body distal junction. Optionally, in the relaxed state, the distal body inner body impedes blood flow to a greater extent than the distal body outer body when the distal body outer body and the distal body inner body are placed in a blood vessel. Optionally, prior to removal of an obstruction, the distal body inner body is configured to automatically reduce blood flow when the distal body inner body is placed in a blood vessel. Optionally, in the relaxed state, the distal body outer body comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal junction and located between 150 degrees and 180 degrees relative to each other, and further wherein the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the distal body proximal junction, each of the distal crowns forming a portion of a cell. Optionally each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center. Optionally, the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns. Optionally, the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, in the relaxed state, the distal body inner body is located distally relative to the first and second pair of distal crowns. Optionally, the distal body inner body is radiopaque. Optionally, in the relaxed state, the distal body inner body length is no more than about 33% of the distal body outer body length. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, the film is attached to the basket memory metal strips at multiple locations along the length of the film. Optionally, the film is comprised of polytetrafluoroethylene. Optionally, in the relaxed state, the film does not have a segment distal to the basket. Optionally, the distal body proximal junction is located approximately in the lengthwise and widthwise center of the distal body in the relaxed state. Optionally, the film is fully located in the basket interior in the relaxed state and in the collapsed state. Optionally, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction. 
     The present disclosure also provides a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from the distal end of the catheter; d) allowing the height and width of the distal body to increase; e) moving the blood clot into the interior of the distal body outer body; and f) moving the distal body proximally out of the blood vessel. 
     The present disclosure also provides a system for removing objects from an interior lumen of an animal. The system may include a pull wire having a proximal end and a distal end. The system may also include a distal body attached to the pull wire and comprising a distal body proximal end, a distal body distal end comprising a distal body distal junction, a distal body length extending from the distal body proximal end to the distal body distal end, a distal body longitudinal axis extending from the distal body proximal junction to the distal body distal junction, and a distal body height and width perpendicular to the distal body length. The distal body may include a basket comprised of a plurality of cells formed by a plurality of basket memory metal strips. Optionally at least some of the basket memory metal strips are located at a distal end of the basket. Optionally, each of the basket memory metal strips located at the distal end of the basket have a distal end. Optionally, each of the distal ends of the basket memory metal strips located at the distal end of the basket converge at, and are attached to, the distal body distal junction. Optionally, the distal body may also include a film comprising a plurality of openings, the film having a film proximal end, a film distal end and a film length extending from the film proximal end to the film distal end. Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, in the relaxed state, the median surface area of the cells is larger than the median surface area of the openings. Optionally, in the relaxed state, the median surface area of the openings is no more than about 200 microns. Optionally, the film is connected to the basket at at least one connection point. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, in the collapsed state and in the relaxed state, the film is located in an interior of the basket. Optionally, in the relaxed state, the film is generally conical in shape with an open proximal end. Optionally, in the relaxed state, the basket comprises a first pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal end and between 150 degrees and 180 degrees relative to each other. Optionally, the basket further comprises a second pair of distal crowns not attached to another cell of the basket and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the proximal end of the distal body, each of the distal crowns forming a portion of a proximal cell. Optionally, each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center. Optionally, the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns. Optionally, the enlarged cells are configured to allow a thrombus to pass therethrough and into the basket interior. 
     Optionally, in the relaxed state, the film is located distally relative to the first and second pair of distal crowns. Optionally, the enlarged cells formed by the first pair of distal crowns are substantially aligned and the enlarged cells formed by the second pair of distal crowns are substantially aligned. Optionally, the film is attached to and extends between the basket memory metal strips located at the distal end of the basket. Optionally, the basket memory metal strips located at the distal end of the basket have an exterior surface and further wherein the film is attached to the exterior surfaces of the basket memory metal strips located at the distal end of the basket. Optionally, the distal body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at a distal body proximal junction. Optionally, in the relaxed state, the film is more flexible than the basket and wherein, in the relaxed state, the median radial force of the film is substantially less than the median radial force of the basket. Optionally, the film comprises a film height and a film width, wherein the film in the relaxed state comprises film tapered region in which the film height and the film width decrease as the film approaches the distal body distal junction. Optionally, the basket comprises a basket height and a basket width, and further wherein the basket comprises a tapered region in which the basket height and the basket width decrease as the distal ends of the basket memory metal strips located at the distal end of the basket approach the distal body distal junction. Optionally, in the relaxed state, the film impedes blood flow to a greater extent than the basket when the film and the basket are placed in a blood vessel. Optionally, prior to removal of an obstruction, the film is configured to automatically reduce blood flow when the film is placed in a blood vessel. Optionally, in the relaxed state, the film length is no more than about 33% of the basket length. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, the film is attached to the basket memory metal strips at multiple locations along the length of the inner body. Optionally, the film is comprised of polytetrafluoroethylene. Optionally, the basket comprises a substantially hollow interior. Optionally, the system is used in a method of removing a blood clot from a blood vessel of an animal, the method comprising the steps of: a) 
     providing the system; b) positioning the system in the blood vessel; c) deploying the distal body from a catheter; d) allowing the height and width of the distal body to increase; e) 
     moving the blood clot into an interior of the basket; and f) moving the distal body proximally out of the blood vessel. Optionally, in the relaxed state, the cells are spaced about a distal body perimeter. Optionally, in the relaxed state, the film does not have a segment distal to the basket. Optionally, the sole connection point of the film to the basket is the distal body distal junction. Optionally, the distal body comprises a proximal junction located approximately in the lengthwise and widthwise center of the distal body in the relaxed state. Optionally, the film is fully located in the basket interior in the relaxed state and in the collapsed state. Optionally, wherein, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction. 
     In still further embodiments, the present disclosure provides a system for removing a blood clot from a human blood vessel, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire and comprising a distal body interior, a distal body perimeter, a distal body proximal end, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, and a distal body height and width perpendicular to the distal body length, the distal body comprising a lattice comprised of a plurality of cells formed by a plurality of memory metal strips. Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the distal body further comprises a film attached to one or more of the memory metal strips and covering at least some of the cells of the lattice, the film impermeable to the passage of human red blood cells, the film configured to prevent a blood clot located in the distal body interior from escaping out of the distal body interior. Optionally, some cells of the lattice are larger than other cells of the lattice and are configured to allow a blood clot to pass therethrough into the distal body interior. Optionally, in the relaxed state, the distal body comprises a gap located adjacent to and not covered by the film, the gap configured to allow blood located in the distal body interior to flow distally therethrough and out of the distal body. Optionally, movement of the blood through the gap is configured to draw a blood clot through a cell and into the distal body interior due to the Bernoulli principle. Optionally, the gap has a size of between about 100 microns to about 1,000 microns and further wherein the size of the gap is less than the median size of the cells of the lattice. Optionally, in the relaxed state, the gap is located adjacent the distal end of the distal body. Optionally, the distal body distal end comprises a distal body distal junction, wherein at least some of the memory metal strips are located at a distal end of the lattice, wherein each of the memory metal strips located at the distal end of the lattice have a distal end, and wherein each of the distal ends of the memory metal strips located at the distal end of the lattice converge at, and are attached to, the distal body distal junction, and further wherein the gap is located between the film and the distal body distal junction. Optionally, the distal body, in the relaxed state, comprises a tapered region in which the distal body height and the distal body width decrease as the distal ends of the memory metal strips located at the distal end of the lattice approach the distal body distal junction. Optionally, the distal body distal junction is in the form of a tube. Optionally, the distal body proximal end comprises a distal body proximal junction. Optionally, the distal body outer body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, in the relaxed state, the lattice has no free proximal crowns pointing generally in the proximal direction. Optionally, the plurality of cells of the lattice and the film are spaced about the distal body perimeter. Optionally, the distal body interior is substantially hollow. Optionally, the lattice is in the form of a basket. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the memory metal strips are located on a distal body perimeter and comprise an interior surface facing the distal body interior and an exterior surface opposite the interior surface, and further wherein in the relaxed state, the film contacts the interior surface of at least some of the memory metal strips. Optionally, in the relaxed state the film extends between the cells of the lattice. Optionally, in the relaxed state, the lattice comprises a first pair of distal crowns not attached to another cell of the lattice and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal junction and located between 150 degrees and 180 degrees relative to each other, and further wherein the lattice further comprises a second pair of distal crowns not attached to another cell of the lattice and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the distal body proximal end, each of the distal crowns forming a portion of a cell, wherein each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center, wherein the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns, wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the distal body interior. Optionally, in the relaxed state, the film is located distally relative to the first and second pair of distal crowns. Optionally, in the relaxed state, the film is no more than about 33% of the distal body length. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, the film is hydrophilic. Optionally the film is configured to reduce blood flow when the distal body is placed in a human blood vessel. 
     In still further embodiments, the system is used in a method of removing a blood clot from a human blood vessel, the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) allowing the height and width of the distal body to increase; d) moving the blood clot into the interior of the distal body; and e) moving the distal body proximally out of the blood vessel. Optionally, step d) comprises moving distal body proximally to move the blood clot into the distal body interior. Optionally, the film traps the blood clot in the distal body interior. Optionally, the method further comprises applying contrast dye proximally and distally to the blood clot. 
     In still further embodiments, the present disclosure provides a system for removing a blood clot from a human blood vessel, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire, the distal body comprising an interior, a distal body proximal end, a distal body distal end, a distal body length extending from the proximal end to the distal end, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, in the relaxed state, the distal body comprises a proximal zone comprising a plurality of proximal cells, a middle zone distal to the proximal zone and comprising a plurality of middle zone cells, and a distal zone (which may comprise a plurality of distal cells) distal to the middle zone. Optionally, at least some (preferably all) of the proximal cells are configured to expand to contact a wall of a human blood vessel. Optionally, at least some of the middle zone cells are configured to allow a blood clot to enter laterally into the distal body interior. Optionally, the distal body comprises a film at least partially (preferably fully) located in the distal zone, the film configured to prevent a blood clot located in the distal body interior from escaping distally out of the distal body interior. Optionally, at least one of the middle zone and the distal zone comprises a plurality of memory metal strips and further wherein the film is attached to at at least one the memory metal strips. Optionally, wherein the film has no free edges so that all ends of the film are attached to a memory metal strip or the distal junction. Optionally, the film comprises at least one pores (preferably a plurality of pores) and further wherein in the relaxed state, the median size of the plurality of pores is less than the median size of the proximal cells and the median size of the middle zone cells. Optionally, the median size of the pores is no more than about 250 microns. Optionally, the film is impermeable to the passage of human red blood cells. Optionally, in the relaxed state, the distal body comprises a gap located adjacent to and not covered by the film, the gap configured to allow blood located in the distal body interior to flow distally therethrough and out of the distal body. Optionally, the film is hydrophilic. Optionally, the film is configured to reduce blood flow when the distal body is placed in a human blood vessel. Optionally, the proximal zone, middle zone and distal zone form a basket having a substantially closed distal end. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the distal body has a non-uniform outward radial force along the distal body length. Optionally, the proximal zone and the middle zone are comprised of a memory metal. Optionally, in the relaxed state, each proximal cell has a proximal crown pointing generally in the proximal direction and attached to a memory metal strip and a distal crown pointing generally in the distal direction and attached to a memory metal strip, and wherein at least some of the middle zone cells comprise a proximal crown pointing generally in the proximal direction and attached to a memory metal strip and a free distal crown pointing generally in the distal direction. Optionally, in the relaxed state, the middle zone comprises at least two free distal crowns located on opposite sides of the distal body. Optionally, in the relaxed state, the distal body has no free proximal crowns pointing generally in the proximal direction. Optionally, the proximal zone and the middle zone are comprised of the same memory metal and are integrally attached to each other and further wherein the proximal zone and the middle zone are prepared by cutting memory metal from a single memory metal tube and shape setting the cut memory metal tube. Optionally, the film is located entirely distal to the free distal crowns. Optionally, the distal body comprises a perimeter, and further wherein the film and the proximal cells and the middle zone cells are spaced about the distal body perimeter. 
     In still further embodiments, the present disclosure provides a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel having a blood vessel wall; c) allowing the height and width of the distal body to increase so that at least some of the proximal cells contact the blood vessel wall; d) moving the blood clot into the distal body interior; and e) moving the distal body proximally out of the blood vessel. Optionally, step d) comprises moving the distal body proximally to move the blood clot into the distal body interior. Optionally, the film traps the blood clot in the distal body interior. Optionally, the middle zone is distal to the blood clot when the distal body is deployed. Optionally, in the relaxed state, each proximal cell has a proximal crown pointing generally in the proximal direction and attached to a memory metal strip and a distal crown pointing generally in the distal direction and attached to a memory metal strip, and wherein at least some of the middle zone cells comprise a proximal crown pointing generally in the proximal direction and attached to a memory metal strip and a free distal crown pointing generally in the distal direction. Optionally, in the relaxed state, the middle zone comprises at least two free distal crowns located on opposite sides of the distal body and further wherein, in the relaxed state, the distal body has no free proximal crowns pointing generally in the proximal direction. 
     In still further embodiments, the present disclosure provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire, the distal body comprising an interior, a distal body proximal end, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, a proximal junction forming the proximal end of the distal body, a plurality of proximal strips, a basket comprised of a plurality of open and closed cells formed by a plurality of basket strips, and a distal junction forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a distal end attached to a cell and a proximal end, the proximal ends of the proximal strips converging at the proximal junction, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, the basket comprises a plurality of proximal closed cells having a proximal crown attached to a proximal strip and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction. Optionally, in the relaxed state, the basket comprises a first drop zone segment distal to the plurality of proximal closed cells, the first drop zone segment comprising at least two closed cells located on opposite sides of the basket having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, and at least two cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction. Optionally, each free distal crown of the first drop zone segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, in the relaxed state, the basket comprises a plurality of distal closed cells distal to the first drop zone segment and having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and attached to the distal junction. Optionally, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction. Optionally, the distal body, in the relaxed state, comprises a distal tapered region in which the distal body height and width decrease as the basket approaches the distal junction. Optionally, the distal body, in the relaxed state comprises a proximal tapered region in which the distal body height and width decrease as the proximal strips approach the proximal junction. Optionally, the distal body further comprises a film attached to the basket, the film at least partially located distal to the first drop zone segment. Optionally, the film is impermeable, as described above. Optionally, in the relaxed state, the basket interior is substantially hollow. Optionally, the enlarged open cells of the free distal crowns of the first drop zone segment are located on opposite sides of the basket and substantially aligned such that the enlarged open cells and substantially hollow interior create a void extending from one of the opposite sides through the substantially hollow interior to the other of the opposite sides. Optionally, in the relaxed state, the basket further comprises a second drop zone segment distal to the first drop zone segment, the second drop zone segment comprising at least two closed cells located on opposite sides of the basket having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction and at least two cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the second drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, the enlarged open cells of the free distal crowns of the second drop zone segment are located on opposite sides of the basket and substantially aligned such that the enlarged open cells of the free distal crowns of the second drop zone segment and substantially hollow interior create a void extending from one of the opposite sides through the substantially hollow interior to the other of the opposite sides. Optionally, the plurality of distal closed cells are distal to the second drop zone segment. Optionally, the free distal crowns of the first drop zone segment are located between 60 degrees and 90 degrees relative to the free distal crowns of the second drop zone segment. Optionally, at least some of the free distal crowns of the first drop zone segment and at least some of the free distal crowns of the second drop zone segment comprise an x-ray marker, the x-ray marker more visible under x-ray as compared to the basket strips when the distal body is located in a cranial blood vessel inside the body of a human and the x-ray is taken from outside the human&#39;s body. Optionally, the first drop zone segment comprises two free distal crowns located approximately the same distance from the proximal junction, and further wherein the second zone segment comprises two free distal crowns located approximately the same distance from the proximal junction. Optionally, the first drop zone segment comprises two free distal crowns located between 150 and 180 degrees relative to each other and further wherein the second drop zone segment comprises two free distal crowns located between 150 and 180 degrees relative to each other. Optionally, the free distal crowns of the first drop zone segment are located between 60 degrees and 90 degrees relative to the free distal crowns of the second drop zone segment. Optionally, the surface area of the enlarged open cells of the first and second drop zone segments in the relaxed state is greater than the surface area of the other cells of the basket. Optionally, the first drop zone segment comprises two free distal crowns located approximately the same distance from the proximal junction and between 150 and 180 degrees relative to each other. Optionally, the first drop zone segment comprises two closed cells located between 150 and 180 degrees apart that have a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction. Optionally, the distal body further comprises a lead wire extending distally from the distal junction. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the basket has a non-uniform outward radial force from the proximal strips to the basket distal end. Optionally, the basket strips are comprised of a memory metal. Optionally, the first drop zone segment comprises two free distal crowns configured to contact each other when an exterior, external compressive force is exerted on one of the free distal crowns when the distal body is in the relaxed state. Optionally, the proximal junction is located approximately in the center of the first height and first width in the relaxed state. Optionally, the proximal end of a first proximal strip is located at least about 65 degrees relative to the distal end of the first proximal strip, wherein the proximal end of a second proximal strip is located at least about 65 degrees relative to the distal end of the second proximal strip, and further wherein the first and second proximal strips intersect adjacent and distal to the proximal junction. Optionally, the proximal junction is in the form of a proximal tube, wherein the basket, the proximal tube and the proximal strips are comprised of a memory metal, wherein the proximal tube comprises a proximal end and a distal end, and further wherein the proximal strips are integral with the distal end of the proximal tube. Optionally, the distal crowns of the plurality of distal closed cells distal to the first drop zone segment are attached to the distal junction by distal strips having proximal ends attached to the distal crowns and distal ends attached to the distal junction. 
     The present disclosure further provides a method of removing a blood clot from a blood vessel of an animal that may include a) providing the system; b) positioning the system in the blood vessel; c) allowing the height and width of the distal body to increase; d) moving the blood clot into the basket interior; and e) moving the distal body proximally out of the blood vessel. Optionally, in the relaxed state, the basket further comprises a second drop zone segment distal to the first drop zone segment, the second drop zone segment comprising at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction and at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the second drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, the second drop zone segment and film are distal to the blood clot when the distal body is deployed from the distal end of the catheter. Optionally, the method further comprises applying contrast dye proximally and distally to the blood clot. 
     In still further embodiments, the present disclosure provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire, the distal body comprising an interior, a distal body proximal end, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, a proximal junction forming the proximal end of the distal body, a plurality of proximal strips, a basket comprised of a plurality of open and closed cells formed by a plurality of basket strips, and a distal junction forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a distal end attached to a cell and a proximal end, the proximal ends of the proximal strips converging at the proximal junction, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, in the relaxed state, the basket comprises a plurality of proximal closed cells having a proximal crown attached to a proximal strip and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction. Optionally, in the relaxed state, the basket comprises a first drop zone segment distal to the plurality of proximal closed cells, the first drop zone segment comprising at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, and at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction. Optionally, in the relaxed state, each free distal crown of the first drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, in the relaxed state, the basket comprises a plurality of distal closed cells distal to the first drop zone segment and having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and attached to the distal junction by a distal strip having a proximal end attached to the distal crown and a distal end attached to the distal junction. Optionally, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction. Optionally, each of the distal ends of the distal strips converge at the distal junction. Optionally, in the relaxed state, comprises a distal tapered region in which the distal body height and width decrease as the distal strips approach the distal junction. Optionally, the distal body, in the relaxed state comprises a proximal tapered region in which the distal body height and width decrease as the proximal strips approach the proximal junction. Optionally, in the relaxed state, the basket interior is substantially hollow. Optionally, the distal body further includes a film, which may be permeable or impermeable, attached to the basket. Optionally, in the relaxed state, the basket further comprises a second drop zone segment distal to the first drop zone segment, the second drop zone segment comprising at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction and at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the second drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, the first drop zone segment comprises two free distal crowns located approximately the same distance from the proximal junction, wherein the second zone segment comprises two free distal crowns located approximately the same distance from the proximal junction, wherein the first drop zone segment comprises two free distal crowns located between 150 and 180 degrees relative to each other and further wherein the second drop zone segment comprises two free distal crowns located between 150 and 180 degrees relative to each other and further wherein the enlarged open cells of the free distal crowns of the first drop zone segment are located on opposite sides of the basket and substantially aligned such that the enlarged open cells and substantially hollow interior create a void extending from one of the opposite sides through the substantially hollow interior to the other of the opposite sides. Optionally, the system is used in a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel; c) allowing the height and width of the distal body to increase; d) moving the blood clot into the basket interior; and e) moving the distal body proximally out of the blood vessel. 
     The present disclosure also provides a system for removing a blood clot from a human blood vessel. In some embodiments, the system includes a pull wire having a proximal end and a distal end; a distal body attached to the pull wire and comprising a distal body interior, a distal body perimeter, a distal body proximal end, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, and a distal body height and width perpendicular to the distal body length, the distal body comprising a framework comprised of a plurality of cells formed by a plurality of memory metal strips, wherein the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width, and further wherein pull wire has a length of at least about 280 centimeters. Optionally, the pull wire has a width of no more than about 0.014 inches (0.03556 cm). Optionally, the pull wire is comprised of a biocompatible metallic material. Optionally, some cells of the framework are larger than other cells of the framework and are configured to allow a blood clot to pass therethrough into the distal body interior. Optionally, the distal body distal end comprises a distal body distal junction, wherein at least some of the memory metal strips are located at a distal end of the framework, wherein each of the memory metal strips located at the distal end of the framework have a distal end, and wherein each of the distal ends of the memory metal strips located at the distal end of the framework converge at, and are attached to, the distal body distal junction. Optionally, the distal body, in the relaxed state, comprises a tapered region in which the distal body height and the distal body width decrease as the distal ends of the memory metal strips located at the distal end of the framework approach the distal body distal junction. Optionally, the distal body distal junction is in the form of a tube. Optionally, the distal body proximal end comprises a distal body proximal junction. Optionally, the distal body further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, in the relaxed state, the framework has a plurality of free crowns pointing generally in the distal direction and has no free crowns pointing generally in the proximal direction. Optionally, the plurality of cells of the framework are spaced about the distal body perimeter. Optionally, the distal body interior is substantially hollow. Optionally, the framework is in the form of a basket. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body when the distal body is in the collapsed state. Optionally, the memory metal strips are located on a distal body perimeter and comprise an interior surface facing the distal body interior and an exterior surface opposite the interior surface. Optionally, in the relaxed state, the framework comprises a first pair of distal crowns not attached to another cell of the framework and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal end and located between 150 degrees and 180 degrees relative to each other, and further wherein the framework further comprises a second pair of distal crowns not attached to another cell of the framework and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the distal body proximal end, each of the distal crowns forming a portion of a cell. Optionally, each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center. Optionally, the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns. Optionally, the enlarged cells are configured to allow a thrombus to pass therethrough and into the distal body interior. Optionally, the system further comprises a secondary device selected from the group consisting of a balloon tube, distal aspiration catheter and stent, the secondary device attached to the pull wire (e.g., encircling the pull wire in the case of a balloon tube) and located proximal to the distal body. 
     In still further embodiments, the present disclosure provides a method of treating a human having a vascular system, the human further having a proximal stenosis in a proximal blood vessel and a clot in a distal blood vessel, the method comprising the steps of: a) inserting a guide catheter into the human&#39;s vascular system, the guide catheter having an interior and a distal end; b) providing the system wherein the distal body is located inside an interior of a microcatheter, the microcather having a distal end; c) advancing the distal end of the microcatheter distally in the guide catheter interior and beyond the distal end of the guide catheter; d) positioning the distal end of the microcatheter in the distal blood vessel; e) deploying the distal body from the distal end of the microcatheter; f) allowing the height and width of the distal body to increase; g) moving the distal end of the microcatheter proximally out of the human&#39;s body while keeping the distal body in the distal blood vessel and the guide catheter in the human&#39;s body; h) treating the proximal stenosis; i) moving the blood clot into the interior of the distal body; and j) moving the distal body out of the human&#39;s body. 
     Optionally, step h) comprises advancing at least one of a balloon tube and a stent along the pull wire and out the distal end of the guide catheter in the proximal blood vessel to treat the proximal stenosis Optionally, step h) comprises advancing a balloon tube along the pull wire and out the distal end of the guide catheter in the proximal blood vessel and inflating the balloon tube to treat the proximal stenosis. Optionally, step i) comprises moving the distal body proximally to move the blood clot into the distal body interior. Optionally, the method further comprises applying contrast dye proximally and distally to the blood clot. 
     The present disclosure also provides a method of removing a blood clot from a blood vessel in a human, the human having a vascular system, the method comprising the steps of: a) inserting a guide catheter into the human&#39;s vascular system, the guide catheter having a guide catheter interior and a distal end; b) providing the system wherein the distal body is located inside an interior of a microcatheter, the microcatheter having a distal end; c) advancing the distal end of the microcatheter distally in the guide catheter interior and beyond the distal end of the guide catheter; d) positioning the distal end of the microcatheter in the blood vessel; e) deploying the distal body from the microcatheter; f) allowing the height and width of the distal body to increase; g) moving the distal end of the microcatheter proximally out of the human&#39;s body while keeping the distal body in the blood vessel and the guide catheter in the human&#39;s body; h) advancing an aspiration catheter along the pull wire and out the distal end of the guide catheter to a location proximal to the distal body; i) moving the blood clot into the interior of the distal body; j) before, after or during step i), applying aspiration to the aspiration catheter; and k) moving the distal body out of the human&#39;s body. 
     The present disclosure further provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire, the distal body comprising an interior, a proximal end, a distal end, a distal body length extending from the proximal end to the distal end, a proximal junction forming the proximal end of the distal body, a plurality of proximal strips, a basket comprised of a plurality of open and closed cells formed by a plurality of basket strips, and a distal junction forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a distal end attached to a cell and a proximal end, the proximal ends of the proximal strips converging at the proximal junction, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width, wherein, in the relaxed state, the basket comprises a plurality of proximal closed cells having a proximal crown attached to a proximal strip and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, wherein, in the relaxed state, the basket comprises a first drop zone segment distal to the plurality of proximal closed cells, the first drop zone segment comprising at least two closed cells located on opposite sides of the basket having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, and at least two cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the first drop zone segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior, wherein, in the relaxed state, the basket comprises a plurality of distal closed cells distal to the first drop zone segment and having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and attached to the distal junction, wherein, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction, wherein the distal body, in the relaxed state, comprises a distal tapered region in which the distal body height and width decrease as the basket approaches the distal junction, wherein the distal body, in the relaxed state comprises a proximal tapered region in which the distal body height and width decrease as the proximal strips approach the proximal junction and further wherein pull wire has a length of at least 280 centimeters. 
     Optionally, the pull wire has a width of no more than about 0.014 inches (0.03556 cm). Optionally, in the relaxed state, the basket further comprises a second drop zone segment distal to the first drop zone segment, the second drop zone segment comprising at least two closed cells located on opposite sides of the basket having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction and at least two cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the second drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, the free distal crowns of the first drop zone segment are located between 60 degrees and 90 degrees relative to the free distal crowns of the second drop zone segment. Optionally, the basket interior is substantially hollow. 
     The present disclosure further provides a system for removing objects from an interior lumen of an animal, the system comprising: a pull wire having a proximal end and a distal end; a distal body attached to the pull wire, the distal body comprising an interior, a proximal end, a distal end, a distal body length extending from the proximal end to the distal end, a proximal junction forming the proximal end of the distal body, a plurality of proximal strips, a basket comprised of a plurality of open and closed cells formed by a plurality of basket strips, and a distal junction forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a distal end attached to a cell and a proximal end, the proximal ends of the proximal strips converging at the proximal junction, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width, wherein, in the relaxed state, the basket comprises a plurality of proximal closed cells having a proximal crown attached to a proximal strip and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, wherein, in the relaxed state, the basket comprises a first drop zone segment distal to the plurality of proximal closed cells, the first drop zone segment comprising at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, and at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the first drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior, wherein, in the relaxed state, the basket comprises a plurality of distal closed cells distal to the first drop zone segment and having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and attached to the distal junction by a distal strip having a proximal end attached to the distal crown and a distal end attached to the distal junction, wherein, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction, wherein each of the distal ends of the distal strips converge at the distal junction, wherein the distal body, in the relaxed state, comprises a distal tapered region in which the distal body height and width decrease as the distal strips approach the distal junction, wherein the distal body, in the relaxed state comprises a proximal tapered region in which the distal body height and width decrease as the proximal strips approach the proximal junction; and further wherein pull wire has a length of at least 280 centimeters. Optionally, the pull wire has a width of no more than about 0.014 inches (0.03556 cm). 
     In still further embodiments, the present disclosure provides a system for removing a blood clot from a human blood vessel. The system may include a pull wire having a pull wire proximal end, a pull wire distal end and a pull wire length extending from the pull wire proximal end to the pull wire distal end. The system may further include a proximal body free floating over a fixed distance of the pull wire and comprising a proximal body interior, a proximal body perimeter, a proximal body proximal end that may include a proximal body proximal junction/tube that has an interior allowing the pull wire to pass through, a proximal body open distal end, a proximal body length extending from the proximal body proximal end to the proximal body distal end, and a proximal body height and width perpendicular to the proximal body length. The proximal body may be comprised of a framework comprised of a plurality of cells formed by a plurality of memory metal strips. The system may further include a distal body comprising a distal body interior, a distal body perimeter, a distal body proximal end that may comprise a distal body proximal junction connected to the pull wire, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, and a distal body height and width perpendicular to the distal body length. The distal body may be comprised of a framework comprised of a plurality of cells formed by a plurality of memory metal strips. Optionally, the proximal body has a relaxed state wherein the proximal body has a first height and a first width, and a collapsed state wherein the proximal body has a second height and a second width, the second height of the proximal body less than the first height of the proximal body, the second width of the proximal body less than the first width of the proximal body. Optionally, the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height of the distal body less than the first height of the distal body, the second width of the distal body less than the first width of the distal body. Optionally, the distal body is configured to move between a deployed configuration in which the distal body proximal end is located a first distance distal relative to the proximal body proximal end and a retracted configuration in which the distal body proximal end is located a second distance distal relative to the proximal body proximal end, the second distance less than the first distance. Optionally, the pull wire distal end and the distal body are configured to move proximally a fixed distance toward the proximal body proximal end when the distal body moves from the deployed configuration to the retracted configuration. Optionally, pulling the pull wire proximally is configured to move the distal body from the deployed configuration to the retracted. Optionally, the proximal body interior is substantially hollow. Optionally, the distal body interior is substantially hollow. Optionally, the proximal body, in the relaxed state, comprises a plurality of free distal crowns located at the distal end of the proximal body on the proximal body perimeter and pointing generally in the distal direction, the plurality of free distal crowns forming the proximal body open distal end. Optionally, at least some of the plurality of free distal crowns located at the distal end of the proximal body comprise an x-ray marker. Optionally, the proximal junction of the proximal body and the proximal junction of the distal body each are in the form of a tube. Optionally, in the relaxed state, the proximal body and the distal body do not have any free proximal crowns pointing generally in the proximal direction. Optionally, some cells of the framework of the distal body are larger than other cells of the framework of the distal body and are configured to allow a blood clot to pass therethrough into the distal body interior. Optionally, the distal body distal end comprises a distal body distal junction, wherein at least some of the memory metal strips are located at a distal end of the framework of the distal body, each of the memory metal strips located at the distal end of the framework of the distal body have a distal end, and each of the distal ends of the memory metal strips located at the distal end of the framework of the distal body converge at, and are attached to, the distal body distal junction. Optionally, the distal body, in the relaxed state, comprises a tapered region in which the distal body height and the distal body width decrease as the distal ends of the memory metal strips located at the distal end of the framework of the distal body approach the distal body distal junction. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, the distal body further comprises a plurality of proximal strips, each distal body proximal strip having a distal end attached to a proximal crown of a cell of the distal body and a proximal end, the proximal ends of the proximal strips of the distal body converging at the distal body proximal junction, the proximal body further comprises a plurality of proximal strips, each proximal body proximal strip having a distal end attached to a proximal crown of a cell of the proximal body and a proximal end, the proximal ends of the proximal strips of the proximal body converging at a proximal body proximal junction located at the proximal body proximal end, and the pull wire passes through the proximal body proximal junction. Optionally, in the relaxed state, the framework of the distal body comprises a plurality of free distal crowns pointing generally in the distal direction and does not have any free proximal crowns pointing generally in the proximal direction. Optionally, the plurality of cells of the framework of the distal body are spaced about the distal body perimeter and the plurality of cells of the framework of the proximal body are spaced about the proximal body perimeter. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelop the distal body and the proximal body when the distal body and the proximal body are in the collapsed state. Optionally, in the relaxed state, the framework of the distal body comprises a first pair of distal crowns not attached to another cell of the framework and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal end and located between 150 degrees and 180 degrees relative to each other, wherein each distal crown in the first pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center, the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other, and the enlarged cells are configured to allow a thrombus to pass therethrough and into the distal body interior. Optionally, the proximal body proximal end comprises a proximal body proximal junction in the form of a tube comprising a tube interior, the pull wire comprises a proximal bumper proximal to the proximal body proximal junction, the pull wire comprises a thin segment distal to the proximal bumper, the pull wire comprises a distal bumper distal to the thin segment, the thin segment passes through the tube interior of the proximal body proximal junction but the proximal and distal bumpers are not configured to pass through the tube interior of the proximal body proximal junction. Optionally, the distal bumper forms part of the distal body proximal junction. Optionally, the proximal bumper and distal bumper each comprise x-ray markers. Optionally, the proximal body is free floating when the thin segment passes through the tube interior, pushing the proximal bumper against the proximal body proximal junction is configured to move the proximal body distally, pulling the distal bumper against the proximal body proximal junction is configured to move the proximal body proximally, pushing the pull wire distally is configured to move the distal body proximal junction distally and pulling the pull wire proximally is configured to move the distal body proximal junction proximally. Optionally, the system is used in a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: a) providing the system; b) pushing the proximal bumper against the proximal body proximal junction so that the system is positioned in the blood vessel with the proximal body proximal junction proximal to the blood clot and the distal body distal end distal to the blood clot; c) allowing the height and width of the proximal body and distal body to increase; d) pulling the pull wire proximally so that the thin segment of the pull wire moves proximally within the tube interior and the distal body moves from the deployed configuration to the retracted configuration; and e) pulling the pull wire proximally so that the distal bumper of the pull wire moves against the proximal body proximal junction so that the proximal body, the blood clot and the distal body move proximally out of the blood vessel. Optionally, the proximal body proximal end comprises a proximal body proximal junction, the system further comprises a tube surrounding a segment of the pull wire, the tube comprising an interior comprising the segment of the pull wire, a tube proximal end, and a tube distal end attached to the proximal body proximal junction, the distal body and the distal end of the pull wire are configured to move proximally toward the proximal body proximal end and the tube when the distal body moves from the deployed configuration to the retracted configuration. Optionally, the pull wire and the tube are each attached to a handle, the handle further comprising a moveable slide, and moving the moveable slide proximally is configured to move the distal body from the deployed configuration to the retracted configuration. Optionally, the handle further comprises a slot, moving the moveable slide proximally by a distance within the slot is configured to move the distal body the same distance toward the proximal body proximal junction. In still further embodiments, the present disclosure provides a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel so that the proximal body proximal junction is proximal to the blood clot and the distal body distal end is distal to the blood clot; c) allowing the height and width of the proximal body and distal body to increase; d) moving the moveable slide proximally to move the distal body from the deployed configuration to the retracted configuration; e) moving the proximal body, the blood clot and the distal body proximally out of the blood vessel. In still further embodiments, the present disclosure provides a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: a) providing the system; b) positioning the system in the blood vessel so that the proximal body proximal end is proximal to the blood clot and the distal body distal end is distal to the blood clot; c) allowing the height and width of the proximal body and distal body to increase; d) moving the distal body from the deployed configuration to the retracted configuration; e) moving the proximal body, the blood clot and the distal body proximally out of the blood vessel. Optionally, the proximal body proximal end comprises a proximal body proximal junction, and further wherein the proximal body proximal junction is in the form of a tube comprising an interior and further wherein the proximal body proximal junction passes through the tube interior. Optionally, in the relaxed state, the proximal body proximal junction is located approximately in the center of the proximal body height and width and the distal body proximal junction is located approximately in the center of the distal body height and width. Optionally, the proximal body height, the proximal body width and the distal body height and the distal body width in the relaxed state are substantially the same. 
     In still further embodiments, the system for removing a blood clot from a human blood vessel includes a pull wire having a pull wire proximal end, a pull wire distal end and a pull wire length extending from the pull wire proximal end to the pull wire distal end; a distal body comprising a distal body interior, a distal body perimeter, a distal body proximal end comprising a distal body proximal junction connected to the pull wire, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, and a distal body height and width perpendicular to the distal body length, the distal body comprising a framework comprised of a plurality of cells formed by a plurality of memory metal strips, wherein the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height of the distal body less than the first height of the distal body, the second width of the distal body less than the first width of the distal body, a proximal body comprising a proximal body interior, a proximal body perimeter, a proximal body proximal end, a proximal body open distal end proximal to the distal body proximal end, a proximal body length extending from the proximal body proximal end to the proximal body distal end, and a proximal body height and width perpendicular to the proximal body length, the proximal body comprising a framework comprised of a plurality of cells formed by a plurality of memory metal strips, the proximal body having a relaxed state wherein the proximal body has a first height and a first width, and a collapsed state wherein the proximal body has a second height and a second width, the second height of the proximal body less than the first height of the proximal body, the second width of the proximal body less than the first width of the proximal body, an inner tube located proximal to the distal body proximal end (and the proximal body proximal end) and enveloping the pull wire and comprising an inner tube proximal end, an inner tube distal end attached to the proximal body proximal end and proximal to the pull wire distal end, and an inner tube length extending from the inner tube proximal end to the inner tube distal end, wherein, the inner tube and proximal body proximal end are freely moveable as a unit over the pull wire toward and away from the distal body proximal junction; and an outer tube configured to envelop the inner tube (i.e., the outer tube height and width are greater than the inner tube height and width) and comprising a proximal end, a distal end, and an outer tube length extending from the outer tube proximal end to the outer tube distal end, the outer tube not attached to the distal body, not attached to the proximal body and freely moveable toward and away from the proximal body proximal end and the distal body proximal junction. Optionally, the proximal body open distal end is proximal to the distal body proximal end. Optionally, movement of the outer tube over the proximal body is configured to move the proximal body from the relaxed state to the collapsed state. Optionally, at least when the distal body and proximal body are separated by a distance, pulling the pull wire proximally automatically moves the distal body but not the proximal body proximally. Optionally, pushing the pull wire distally automatically moves the distal body but not the proximal body distally. Optionally, pulling the inner tube proximally automatically moves the proximal body but not the distal body proximally. Optionally, at least when the distal body and proximal body are separated by a distance, pushing the inner tube distally automatically moves the proximal body but not the distal body distally. Optionally, the inner tube and outer tube are flexible. Optionally, the inner tube has a length of at least about 50 centimeters (e.g., 50 to 300 centimeters). 
     Optionally, in the relaxed state, the proximal body has a minimum height and width at the proximal body proximal end. Optionally, in the relaxed state, the distal body has a minimum height and width at the distal body proximal junction. Optionally, the proximal body proximal end comprises a proximal body proximal junction and the inner tube is attached to the proximal body proximal junction. Optionally, the proximal body proximal junction is in the form of a tube enveloping the pull wire. Optionally, in the relaxed state, the proximal body comprises a tapered proximal end in which the proximal body height and proximal body width decrease in size at the proximal body proximal junction. Optionally, in the relaxed state, the proximal body has a maximum height and width at the proximal body open distal end and the proximal body has a minimum height and width at the proximal body proximal end. Optionally, in the relaxed state, the proximal body has a maximum height and width that are at least 0.5 millimeters larger than the distal body maximum height and width. Optionally, in the relaxed state, the proximal body length is between about ⅓ and about ⅔ of the distal body length. Optionally, the proximal body further comprises a film attached to the memory metal strips of the proximal body. Optionally, the film is impermeable to human red blood cells. Optionally, the proximal body, in the relaxed state, comprises a plurality of free distal crowns located at the distal end of the proximal body on the proximal body perimeter and pointing generally in the distal direction, the plurality of free distal crowns forming the proximal body open distal end. Optionally, at least some of the plurality of free distal crowns located at the distal end of the proximal body comprise an x-ray marker. Optionally, the inner tube has an inner diameter of from about 0.14 to about 0.30 inches and an outer diameter of between about 0.18 and about 0.40 inches. Optionally, the inner tube distal end is permanently attached to the proximal body proximal end. Optionally, the combined length of the proximal body and the inner tube is greater than the outer tube length. Optionally, the length of the pull wire is greater than the combined length of the proximal body and the inner tube. Optionally, the proximal body interior is substantially hollow. Optionally, the distal body interior is substantially hollow. Optionally, the proximal junction of the distal body is in the form of a tube. Optionally, in the relaxed state, the proximal body and the distal body do not have any free proximal crowns pointing generally in the proximal direction. Optionally, the distal body distal end comprises a distal body distal junction, wherein at least some of the memory metal strips are located at a distal end of the framework of the distal body, wherein each of the memory metal strips located at the distal end of the framework of the distal body have a distal end, and wherein each of the distal ends of the memory metal strips located at the distal end of the framework of the distal body converge at, and are attached to, the distal body distal junction, and further wherein the distal body, in the relaxed state, comprises a tapered region in which the distal body height and the distal body width decrease as the distal ends of the memory metal strips located at the distal end of the framework of the distal body approach the distal body distal junction. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, the distal body further comprises a plurality of proximal strips, each distal body proximal strip having a distal end attached to a proximal crown of a cell of the distal body and a proximal end, the proximal ends of the proximal strips of the distal body converging at the distal body proximal junction, wherein the proximal body further comprises a plurality of proximal strips, each proximal body proximal strip having a distal end attached to a proximal crown of a cell of the proximal body and a proximal end, the proximal ends of the proximal strips of the proximal body converging at a proximal body proximal junction located at the proximal body proximal end, and further wherein the pull wire passes through the proximal body proximal junction. Optionally, in the relaxed state, the framework of the distal body comprises a plurality of free distal crowns pointing generally in the distal direction and does not have any free proximal crowns pointing generally in the proximal direction. Optionally, the plurality of cells of the framework of the distal body are spaced about the distal body perimeter and the plurality of cells of the framework of the proximal body are spaced about the proximal body perimeter. Optionally, the system further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter comprised of a biocompatible material and configured to envelop the outer tube, the inner tube and the proximal body. Optionally, in the relaxed state, the framework of the distal body comprises a first pair of distal crowns not attached to another cell of the framework and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal end and located between 150 degrees and 180 degrees relative to each other, wherein each distal crown in the first pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center. Optionally, the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other, and further wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the distal body interior. Optionally, the pull wire proximal end is located outside the human&#39;s body, the pull wire distal end and the distal body are located in a lumen in the human&#39;s body (e.g., an intracranial blood vessel), the proximal body and the inner tube distal end are located at a location proximal to the distal body in a lumen in the human&#39;s body, the outer tube proximal end is located in a lumen in the human&#39;s body, and the outer tube proximal end and the inner tube proximal end are located outside the human&#39;s body. 
     In still further embodiments, the present disclosure provides a method of removing a blood clot from a blood vessel of an animal the method comprising the steps of: a) providing a catheter having a proximal end and a distal end, the catheter enveloping a pull wire having a pull wire proximal end, a pull wire distal end and a pull wire length extending from the pull wire proximal end to the pull wire distal end; and a distal body comprising a distal body interior, a distal body perimeter, a distal body proximal end comprising a distal body proximal junction connected to the pull wire, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, and a distal body height and width perpendicular to the distal body length, the distal body comprising a framework comprised of a plurality of cells formed by a plurality of memory metal strips, wherein the distal body has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height of the distal body less than the first height of the distal body, the second width of the distal body less than the first width of the distal body; b) deploying the distal body from the catheter distal end so the distal body moves from the collapsed state to the relaxed state; c) providing a proximal system comprising a proximal body comprising: i) a proximal body interior, a proximal body perimeter, a proximal body proximal end, a proximal body open distal end proximal to the distal body proximal end, a proximal body length extending from the proximal body proximal end to the proximal body distal end, and a proximal body height and width perpendicular to the proximal body length, the proximal body comprising a framework comprised of a plurality of cells formed by a plurality of memory metal strips, the proximal body having a relaxed state wherein the proximal body has a first height and a first width, and a collapsed state wherein the proximal body has a second height and a second width, the second height of the proximal body less than the first height of the proximal body, the second width of the proximal body less than the first width of the proximal body, ii) an inner tube located proximal to the proximal body proximal end and the distal body proximal end and enveloping the pull wire and comprising an inner tube proximal end, an inner tube distal end attached to the proximal body proximal end and proximal to the pull wire distal end, an inner tube interior receiving the pull wire and an inner tube length extending from the inner tube proximal end to the inner tube distal end, wherein the inner tube and proximal body proximal end are freely moveable as a unit over the pull wire toward and away from the distal body proximal junction; and iii) an outer tube enveloping the inner tube and proximal body and comprising a proximal end a distal end, an outer tube interior configured to receive the inner tube and an outer tube length extending from the outer tube proximal end to the outer tube distal end, the outer tube not attached to the distal body, not attached to the proximal body and freely moveable toward and away from the proximal body proximal end and the distal body proximal junction; d) moving the proximal system as a single unit distally over the pull wire toward the distal body (e.g., through the catheter proximal end, through the catheter interior and out the catheter distal end); e) deploying the inner tube and proximal body from the outer tube distal end at a location proximal to the distal body so that the proximal body moves from the collapsed state to the relaxed state; f) trapping the blood clot between the distal body and the proximal body; and g) moving the distal body proximally towards the proximal body without moving the proximal body by moving the pull wire proximally; and h) moving the pull wire, distal body, proximal body, inner tube and blood clot proximally out of the animal. Optionally, step g) comprises moving the distal body proximally towards the proximal body without moving the proximal body by grasping a segment of the pull wire outside of the human&#39;s body and moving the pull wire proximally while holding a segment of the inner tube outside of the human&#39;s body stationary. Optionally, movement of the outer tube over the proximal body is configured to move the proximal body from the relaxed state to the collapsed state. Optionally, at least when the distal body and proximal body are separated by a distance, pulling the pull wire proximally automatically moves the distal body but not the proximal body proximally. Optionally, pushing the pull wire distally automatically moves the distal body but not the proximal body distally. Optionally, pulling the inner tube proximally automatically moves the proximal body but not the distal body proximally. Optionally, at least when the distal body and proximal body are separated by a distance, pushing the inner tube distally automatically moves the proximal body but not the distal body distally. Optionally, the inner tube and outer tube are flexible. Optionally, the inner tube has a length of at least about 50 centimeters. In addition, the proximal body, pull wire and distal body may include one or more additional features described in the paragraph directly above. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  illustrates a side, elevation view of a memory metal tube prior to being cut by a laser. 
         FIG. 1B  illustrates a side, elevation view of the memory metal tube of  FIG. 1A  being cut by a laser. 
         FIG. 2A  illustrates a side, elevation view of the memory metal tube of  FIG. 1B  after being cut by a laser; in  FIG. 2A , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 2B  illustrates a side, perspective view of the memory metal tube of  FIG. 1B  after being cut by a laser. 
         FIG. 2C  illustrates another side, perspective view of the memory metal tube of  FIG. 1B  after being cut by a laser; in  FIG. 2C , the tube is rotated as compared to  FIG. 2B . 
         FIGS. 3A-3H  illustrate a method of manufacturing a distal body of one embodiment of the present invention using the laser cut memory metal tube of  FIGS. 1 and 2 ; in  FIGS. 3A-3H , the basket portion of the distal body is not shown for simplicity of illustration. 
         FIGS. 4A-4D  illustrate the welding steps of the method of manufacturing shown in  FIG. 3 ; in  FIGS. 4A-4D , the basket portion of the distal body is not shown for simplicity of illustration. 
         FIGS. 5 and 6  illustrate different locations that connector strips may be welded to the proximal memory metal strips. 
         FIG. 7  illustrates a side, elevation view of a catheter and the distal body of  FIG. 6 . 
         FIG. 8  illustrates a side, elevation view of a deployable system of one embodiment of the present invention being used to capture a blood clot; in  FIG. 8 , the basket portion of the distal body is not shown for simplicity of illustration. 
         FIG. 9 , which has subparts (A)-(F), illustrates a side, elevation view of a claw of one embodiment of the present invention being closed by a claw actuator tube; in  FIG. 9 , the basket portion of the distal body is not shown for simplicity of illustration. 
         FIG. 10 , which has subparts (A)-(G), illustrates a side, elevation view of a deployable system of one embodiment of the present invention being used to capture a blood clot; in  FIG. 10 , the basket portion of the distal body is not shown for simplicity of illustration. 
         FIG. 11  illustrates a first, perspective view of a distal body of an alternate embodiment of the present invention; the distal body is in what is referred to herein as “Orientation  1 ”. 
         FIG. 12A  illustrates a second, perspective view of the distal body of  FIG. 11 ; the distal body is in what is referred to herein as “Orientation  2 ”. 
         FIG. 12B  illustrates a proximal, elevation view of the proximal strips of the distal body of  FIG. 11 . 
         FIG. 13  illustrates a close-up, perspective view of two unattached distal-pointing crowns of the distal body of  FIG. 11 . 
         FIG. 14A  illustrates a native memory metal tube used to manufacture the distal body of  FIG. 11 ; the native tube has been rolled out flat and the lines in the tube indicate where the tube has been cut by a laser. 
         FIG. 14B  illustrates a first, perspective view of the distal body manufactured from the native tube of  FIG. 14A ; the distal body is in Orientation  1 . 
         FIG. 14C  illustrates a second, perspective view of the distal body manufactured from the native tube of  FIG. 14A ; the distal body is in Orientation  2 . 
         FIGS. 15A-G  illustrate stepwise use of the distal body of  FIG. 11  in retrieving a soft clot; the distal body is in Orientation  1 . 
         FIGS. 16A-H  illustrate stepwise use of the distal body of  FIG. 11  in retrieving a hard clot; the distal body is in Orientation  1 . 
         FIGS. 17A-G  illustrate stepwise use of the distal body of  FIG. 11  in retrieving a soft clot; the distal body is in Orientation  2 . 
         FIGS. 18A-G  illustrate stepwise use of the distal body of  FIG. 11  in retrieving a hard clot; the distal body is in Orientation  2 . 
         FIGS. 19A-N  illustrate stepwise use of the distal body of  FIG. 11  in retrieving a deformable, cohesive adherent clot; the distal body is in Orientation  2 . 
         FIG. 20A  illustrates a view of a native memory metal tube used to manufacture a distal body of yet another embodiment of the present invention; the native tube has been rolled out flat, the lines in the tube indicate where the tube has been cut by a laser, and the distal body of  FIGS. 20A-20C  is slightly shorter than the distal body of  FIGS. 11-19  and is meant for use in tortuous blood vessels. 
         FIG. 20B  illustrates a first, perspective view of the distal body manufactured from the native tube of  FIG. 20A ; the distal body is in Orientation  1 . 
         FIG. 20C  illustrates a second, perspective view of the distal body manufactured from the native tube of  FIG. 20A ; the distal body is in Orientation  2 . 
         FIG. 21  shows a perspective view of a clot retrieval system that includes the distal body of  FIGS. 20B-C  being delivered in a blood vessel using a delivery catheter. 
         FIG. 22  shows a perspective view of the distal body of  FIG. 21 , after deployment of the distal body and retraction of the delivery catheter, in a blood vessel. 
         FIG. 23  shows a perspective view of the distal body of  FIG. 21 ; as compared to  FIG. 22 , the distal body has been moved proximally and tension has been exerted on the pull wire. 
         FIG. 24  shows a perspective view of a suction catheter that is being delivered over the pull wire of the system of  FIG. 21 . 
         FIG. 25  shows a perspective view of the distal end of the suction catheter of  FIG. 24  being pushed into a clot; a syringe is sucking the clot to the suction catheter because the user has pulled back on the lever of the syringe. 
         FIG. 26  shows a perspective view of the distal end of the suction catheter of  FIG. 24  being pushed into a clot; in  FIG. 26 , the user has locked the syringe lever at the desired volume. 
         FIG. 27  shows a perspective view of the system of  FIG. 24 ; in  FIG. 27 , the suction catheter has partially sucked the distal body and clot into the suction catheter. 
         FIG. 28  shows a perspective view of the system of  FIG. 24 ; in  FIG. 28 , the suction catheter has completely sucked the distal body and clot into the suction catheter. 
         FIG. 29  shows a perspective view of the system of  FIG. 24 ; the system, and captured clot, is being removed proximally from the vessel. 
         FIG. 30A  illustrates a front, perspective view of a system of another embodiment of the present invention that includes a delivery catheter, a coaxial tube slideable along a pull wire, and proximal strips that extend from the distal end of the coaxial tube and are attached to a distal basket; in  FIG. 30A , the distal basket is in the relaxed state. 
         FIG. 30B  illustrates a front, perspective view of the system of  FIG. 30A ; in  FIG. 30B , the system is in a partially collapsed state due to distal movement of the catheter. 
         FIG. 30C  illustrates a proximal, elevation view of the proximal strips of the system of  FIG. 30A . 
         FIG. 30D  illustrates a proximal, elevation view of an alternate embodiment of  FIGS. 30A and 30B  that includes two proximal strips. 
         FIG. 30E  illustrates a proximal, elevation view of an alternate embodiment of  FIGS. 30A and 30B  that includes four proximal strips. 
         FIG. 31A  illustrates a front, perspective view of the system of  FIG. 30A ; in  FIG. 31A , the system is between the proximal collapsed state and the relaxed state. 
         FIG. 31B  illustrates a front, perspective view of the system of  FIG. 30A ; in  FIG. 31A , the system is in the distal collapsed state. 
         FIG. 32A-F  illustrates a front, perspective view of the system of  FIG. 30A  and stepwise use of the system in retrieving a clot in a human intracranial artery. 
         FIG. 33  illustrates a front, perspective view of an alternate embodiment of the system of  FIGS. 31-32  in which the proximal ends of the proximal strips are attached to the distal end of the coaxial sheath. 
         FIG. 34  illustrates a front, perspective view of an alternate embodiment of the system in which the coaxial sheath is a braided catheter comprised of a plurality of braids and further wherein the distal segment of each braid forms a proximal strip. 
         FIG. 35A-C  illustrate a front, perspective view of an embodiment of the system of  FIGS. 30-34  in which the proximal strips cover the proximal tip of the proximal crowns; in particular,  FIG. 35A  is an exploded view,  FIG. 35B  shows the proximal strip attached to the proximal crown via a loop and an eyelet, and  FIG. 35C  shows how the proximal strips bend backwards to cover the proximal tips when the distal body is in the distal collapsed state. 
         FIGS. 36A-36D  illustrate a side, perspective view of a stepwise sequence of making an embodiment of the basket system of the present invention. 
         FIGS. 37A-37B  illustrate a side, perspective view of stepwise deployment and use of a basket system with proximal tether memory metal strips that are about the same length as the rest of the basket (as measured from the proximal-most crown to the distal tube). 
         FIGS. 38A-38E  illustrate a side, perspective view of stepwise deployment and use of the basket system of  FIGS. 37A-37B  in a blood vessel to retrieve a clot. 
         FIG. 39A  illustrates a side, perspective view of the basket system of  FIGS. 37A and 37B ; as shown, all proximal crowns of the proximal cells are attached to a proximal tether memory metal strip. 
         FIG. 39B  illustrates an alternative embodiment in which one proximal crown of a proximal cell is not attached to a proximal tether memory metal strip. 
         FIG. 40  illustrates a side, perspective view of a basket system with relatively thick proximal tether memory metal strips; in this  FIG. 40 , as shown, the proximal tether memory metal strips are thicker than the memory metal strips forming the proximal-most crown. 
         FIG. 41  illustrates a side, perspective view of a basket system with a proximal basket and a distal basket. 
         FIG. 42  illustrates a side, perspective view of a basket system with a proximal basket and a distal basket in which the proximal tether memory metal strips rotate 180 degrees about both the longitudinal axis of the proximal tether memory metal strips and about the longitudinal axis of the pull wire. 
         FIGS. 43A-43B  illustrate a side, perspective view of a basket system in which the proximal tether memory metal strips rotate 90 degrees about both the longitudinal axis of the proximal tether memory metal strips and about the longitudinal axis of the pull wire. 
         FIG. 43C  illustrates a front, elevation view of the basket system of  FIGS. 43A-43B . 
         FIGS. 43D and 43E  illustrate a front, elevation view and a side, perspective view of a basket system in which the proximal tether memory metal strips rotate 180 degrees about both the longitudinal axis of the proximal tether memory metal strips and about the longitudinal axis of the pull wire. 
         FIGS. 44A-44E  illustrate a side, perspective view of stepwise deployment and use of a basket system with a proximal basket and a distal basket in a blood vessel to retrieve a clot. 
         FIGS. 45A-45D  illustrate a side, perspective view of a stepwise sequence of making an embodiment of the basket system of the present invention. 
         FIGS. 46A-46E  illustrate a side, perspective view of stepwise deployment and use of a basket system with relatively thin and short proximal tether memory metal strips. 
         FIGS. 47A-47H  illustrate a side, perspective view of stepwise deployment and use of the basket system of  FIGS. 46A-46E  in a blood vessel to retrieve a clot. 
         FIGS. 48A-48B  illustrate a side, perspective view of stepwise deployment and use of a basket system with relatively thick and short proximal tether memory metal strips. 
         FIGS. 49A-49C  illustrate a side, perspective view of stepwise deployment and use of a basket system with three relatively thin and short proximal tether memory metal strips; the system is deployed in a blood vessel to retrieve a clot. 
         FIG. 50A  illustrates a side, perspective view of a basket system with relatively thin and short proximal tether memory metal strips; in  FIG. 50A , all proximal crowns of the proximal cells are attached to a proximal tether memory metal strip. 
         FIG. 50B  illustrates a side, perspective view of a basket system with relatively thin and short proximal tether memory metal strips; in  FIG. 50B , one proximal crowns of a proximal cell is not attached to a proximal tether memory metal strip. 
         FIG. 50C  illustrates a front view of a basket system with two proximal tether memory metal strips. 
         FIG. 50D  illustrates a front view of a basket system with three proximal tether memory metal strips. 
         FIG. 50E  illustrates a front view of a basket system with four proximal tether memory metal strips. 
         FIG. 51  illustrates a side, perspective view of a basket system with relatively thin and short proximal tether memory metal strips; in this  FIG. 51 , as shown, the proximal tether memory metal strips are not as thick as the memory metal strips forming the proximal-most crown; further, the thickness of the memory metal strips gradually decreases from the proximal-most crown along the basket length to the distal hub/junction. 
         FIG. 52  illustrates a side, perspective view of a basket system with relatively thin, short proximal tether memory metal strips. 
         FIGS. 53A-53C  illustrate a side, perspective view of stepwise deployment and use of a basket system with relatively long and thin proximal tether memory metal strips; the system is used in a blood vessel to retrieve a clot. 
         FIGS. 54A-54C  illustrate a side, perspective view of a basket system with a proximal basket connected to a distal basket by proximal tether memory metal strips. 
         FIGS. 55A-55B  illustrate a side, perspective view of a basket system in which the proximal tether memory metal strips rotate 90 degrees about both the longitudinal axis of the proximal tether memory metal strips and about the longitudinal axis of the pull wire. 
         FIG. 55C  illustrates a front, elevation view of the basket system of  FIGS. 55A-55B . 
         FIGS. 55D and 55E  illustrate a front, elevation view and a side, perspective view of a basket system in which the proximal tether memory metal strips rotate 180 degrees about both the longitudinal axis of the proximal tether memory metal strips and about the longitudinal axis of the pull wire. 
         FIG. 56  illustrates a side, perspective view of a basket system with relatively thick and short proximal tether memory metal strips. 
         FIGS. 57A-57E  illustrates a side perspective view of deployment a basket system in which the proximal tether memory metal strips are thicker than the memory metal strips forming the proximal cells of the distal basket. 
         FIGS. 58A-58B  illustrates a side perspective view of a basket system with relatively long cords, instead of proximal tether memory metal strips. 
         FIGS. 59A-59B  illustrates a side perspective view of a basket system with relatively short cords, instead of proximal tether memory metal strips. 
         FIGS. 60A-60F  illustrate a perspective view of deployment of the basket system of  FIGS. 59A-59B . 
         FIG. 61  illustrates a side perspective view of a basket system with cords and proximal tether memory metal strips. 
         FIGS. 62A-62C  illustrate a perspective view of deployment of the basket system of  FIG. 61 . 
         FIG. 63  illustrates a right side perspective view of a mandrel used to prepare unattached distal-pointing crowns that curve radially toward the basket interior. 
         FIG. 64  illustrates a right side elevation view of the mandrel of  FIG. 63 . 
         FIG. 65  illustrates an alternate embodiment of a distal body; in the distal body of  FIG. 65 , the proximal strips converge and are soldered or welded at the proximal hub/junction and the basket strips located at the distal end of the basket converge and are soldered or welded at the distal hub/junction. 
         FIG. 66A  illustrates a side, elevation view of a memory metal tube. 
         FIG. 66B  illustrates a side, elevation view of the memory metal tube of  FIG. 66A  being cut by a laser. 
         FIG. 67  illustrates a side, elevation view of the memory metal tube of  FIG. 66B  after being cut by a laser; in  FIG. 67 , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 68  illustrates a side, elevation view of the circled area labelled  68  in  FIG. 67  (namely, the distal portion of the cut memory metal tube of  FIG. 67 —the distal portion includes the distal ends of the distal memory metal strips, the distal end tabs and the distal longitudinal tabs); in  FIG. 68 , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 69  illustrates a side, elevation view of the circled area labelled  69  in  FIG. 67  (namely, the proximal portion of the cut memory metal tube of  FIG. 67 —the proximal portion includes the proximal ends of the proximal memory metal strips, the proximal end tabs and the proximal distal longitudinal tabs); in  FIG. 69 , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 70  illustrates a side, elevation view of the circled area labelled  70  in  FIG. 69  (namely, a close-up of the proximal portion of the cut memory metal tube of  FIG. 69 ); in  FIG. 70 , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 71  illustrates a side, elevation view of the close-up of the proximal portion of the cut memory metal tube of  FIG. 70  after electropolishing; in  FIG. 71 , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 72  illustrates a side, elevation view of the close-up of the proximal portion of the cut memory metal tube of  FIG. 70  after electropolishing and tearing along the perforations; in  FIG. 72 , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 73  illustrates a side, elevation view of the close-up of the proximal portion of the cut memory metal tube of  FIG. 69 . 
         FIG. 74  illustrates a side, elevation view of the proximal portion of the cut memory metal tube of  FIG. 73  after electropolishing and after tearing along the perforations to remove the proximal end tab and the proximal longitudinal tabs from the proximal segments of the proximal memory metal strips. 
         FIG. 75  illustrates another side elevation view of the proximal portion of the cut memory metal tube of  FIG. 73  after electropolishing and after tearing along the perforations to remove the proximal end tab and the proximal longitudinal tabs from the proximal segments of the proximal memory metal strips; as compared to  FIG. 74 , the proximal end of the cut memory metal tube has been rotated 90 degrees in  FIG. 75 . 
         FIG. 76A  illustrates a side elevation view of a pull wire. 
         FIG. 76B  illustrates a side elevation view of a coil system that includes a core and a coil wrapped around the core. 
         FIG. 76C  illustrates a side elevation of the pull wire of  FIG. 76A  being soldered to the coil system of  FIG. 76B . 
         FIG. 76D  illustrates a close-up, side elevation view of the area denoted by the dashed rectangle in  FIG. 76C  (namely, the distal end of the pull wire and the coil system of  FIG. 76C ). 
         FIG. 76E ,  FIG. 76F  and  FIG. 76G  illustrate stepwise, side elevation views of the proximal ends of the proximal memory metal strips of  FIG. 75  being soldered to the coil system of  FIG. 76D ; as shown in  FIG. 76F  and  FIG. 76G , the proximal memory strips are placed between the core and the coil. 
         FIG. 77  illustrates a side, elevation view of the coil system of  FIG. 76G  being placed through a distal end of a catheter. 
         FIG. 78  illustrates a side, elevation view of a tube (referred to herein as a third tube) being used to re-join distal ends of distal memory metal strips; the distal ends of the distal memory metal strips were initially joined by a distal end tab and distal longitudinal tabs. 
         FIG. 79  illustrates a side elevation view of the proximal portion of the cut memory metal tube and is similar to  FIG. 69 ; the line is merely drawn in to show how each proximal memory metal strip tapers adjacent to the proximal end of the respective proximal memory metal strips (and the line is not present in the device). 
         FIG. 80  illustrate side views of a middle portion cut from the memory metal tube of  FIG. 66B  and expanded using the mandrel of  FIG. 64 ; in  FIG. 80 , the middle portion is in the form of a basket with offset enlarged areas/drop zones adjacent to crowns pointing generally in the distal direction;  FIG. 80  also includes proximal memory metal strips having a free proximal end and a distal end connected to a proximal cell of the basket and distal memory metal strips having a free distal end and a proximal end connected to a distal cell of the basket. 
         FIG. 81  illustrates a medical device that includes the catheter of  FIG. 77 , the pull wire of  FIG. 77 , the coil system, which is attached to the proximal memory metal strips as shown in  FIG. 77 , the basket of  FIG. 80  and the re-joined distal ends of the distal memory metal strips of  FIG. 78 . 
         FIG. 82  illustrates a side, elevation view of proximal memory metal strips and longitudinal perforations at the proximal end of a cut memory metal tube of another embodiment of the present invention; in  FIG. 82 , only longitudinal perforations are present, and as with  FIG. 79 , the line is merely drawn in to show how each proximal memory metal strip tapers adjacent to the proximal end of the respective proximal memory metal strips (and the line is not present in the device). 
         FIG. 83  illustrates a side elevation view of a deployable dual basket system of another embodiment of the present invention. 
         FIG. 84  illustrates another side elevation view of the deployable dual basket system of  FIG. 83 ; as compared to  FIG. 83 , the deployable dual basket system has been rotated 90 degrees. 
         FIG. 85  illustrates a side, elevation view of a memory metal tube being cut by a laser to form a deployable dual basket system of another embodiment of the present invention; in  FIG. 85 , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 86A  illustrates a side elevation view of the proximal end of the memory metal tube of  FIG. 85 ; in  FIG. 86A , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 86B  illustrates a side elevation view of the distal end of the memory metal tube of  FIG. 85 ; in  FIG. 86B , the tube is shown as though it were flat for purposes of illustrating the cut pattern only. 
         FIG. 86C  illustrates a side elevation view of the proximal tether memory metal strips prepared from the tube of  FIG. 86A  after removing the proximal longitudinal tabs and the proximal perimeter tabs. 
         FIG. 86D  illustrates a side elevation view of the distal basket memory metal strips prepared from the tube of  FIG. 86A  after removing the distal longitudinal tabs and the distal perimeter tabs. 
         FIG. 87  illustrates use of a third tube to re-join the distal basket memory metal strips of  FIG. 86D . 
         FIG. 88  illustrates use of a coil to re-join the proximal tether memory metal strips of  FIG. 86C . 
         FIGS. 89A-89H  illustrate deployment and use of a catheter-delivered endovascular device that includes the deployable dual basket system of  FIGS. 83 and 84  to treat a human having a subarrachnoid hemorrhage induced vasospasm in a constricted blood vessel having a proximal region having a constricted height and a constricted width and a distal region having a constricted height and a constricted width. 
         FIG. 90  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention that includes a basket with a proximal portion comprising proximal cells and a distal portion comprising braided mesh openings; in  FIG. 90  the basket is in the relaxed state. 
         FIG. 91  illustrates another side elevation view of a deployable basket system of another embodiment of the present invention in the relaxed state; as compared to  FIG. 90 , the distal portion is located further distally in  FIG. 91 . 
         FIG. 92  illustrates a side elevation view of the deployable basket system of  FIG. 91 ; in  FIG. 92 , the basket is in the partially collapsed state. 
         FIG. 93  illustrates use of the deployable basket system of  FIG. 90  in a blood vessel. 
         FIG. 94  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention; in  FIG. 94 , the basket is in the relaxed state and a segment of the distal portion is located in the proximal portion interior. 
         FIG. 95  illustrates a side elevation view of the deployable basket system of  FIG. 94 ; in  FIG. 95 , the basket is in the partially collapsed state. 
         FIG. 96  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention; in  FIG. 96 , the basket is in the relaxed state. 
         FIG. 97  illustrates a side elevation view of the deployable basket system of  FIG. 96 ; in  FIG. 97 , the basket is in the partially collapsed state. 
         FIG. 98  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention; in  FIG. 98 , the deployable basket system is at an initial step of deployment from the catheter. 
         FIG. 99  illustrates a side elevation view of the deployable basket system of  FIG. 98  at a second step of deployment from the catheter. 
         FIG. 100  illustrates a side elevation view of the deployable basket system of  FIG. 98  at a third step of deployment from the catheter. 
         FIG. 101  illustrates a side elevation view of the deployable basket system of  FIG. 98  almost fully deployed from the catheter. 
         FIG. 102  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention. 
         FIG. 103  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention. 
         FIG. 104A  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention with a positive charge propagated along the pull wire to the inner body. 
         FIG. 104B  illustrates a side elevation view of the deployable basket system of  FIG. 104A  with a negative charge propagated along the pull wire to the inner body. 
         FIG. 105  illustrates a close-up cross-sectional view of the area denoted by the rectangular box labelled  105  in  FIG. 104 . 
         FIG. 106  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention in which an active agent is coating the woven linear strands of the distal body inner body. 
         FIG. 106A  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention in which an active agent is coating the woven linear strands of the distal body inner body. 
         FIG. 107  illustrates a side elevation view of the deployable basket system of  FIG. 106  in use in a blood vessel delivering the active agent to dissolve distal emboli. 
         FIG. 108  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention in which an active agent is located in the interior of the distal body inner body. 
         FIG. 109  illustrates a side elevation view of the deployable basket system of  FIG. 108  with the distal body in the collapsed state. 
         FIG. 110  illustrates a side elevation view of the deployable basket system of another embodiment of the present invention with a negative and positive charge being used to deliver the active agent into the blood vessel. 
         FIG. 111  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention with an active agent delivery catheter. 
         FIG. 112  illustrates a cross-sectional view of proximal strips attached to an active agent delivery catheter. 
         FIG. 113  illustrates a cross-sectional view of proximal strips attached to an active agent delivery catheter. 
         FIG. 114  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention in which the catheter serves as the pull wire. 
         FIG. 115  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention in which the catheter serves as the pull wire. 
         FIG. 116  illustrates a side elevation view of a portion of a deployable basket system of another embodiment of the present invention in which the catheter serves as the pull wire. 
         FIG. 117  illustrates a side elevation view of a portion of a deployable basket system of another embodiment of the present invention in which the catheter serves as the pull wire. 
         FIG. 118A  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention. 
         FIG. 118B  illustrates a side elevation view of the deployable basket system of  FIG. 118A  rotated 180 degrees. 
         FIG. 119  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention. 
         FIG. 120A  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention; the deployable basket system of  FIG. 120A  utilizes an impermeable film. 
         FIG. 120B  illustrates a side elevation view of the deployable basket system of  FIG. 120A  rotated 180 degrees. 
         FIG. 121  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention; the deployable basket system of  FIG. 121  utilizes an impermeable film and a gap is present at the distal body distal junction so blood located in the distal body interior can flow therethrough. 
         FIG. 122  illustrates a side elevation view of a deployable basket system of another embodiment of the present invention; the deployable basket system of  FIG. 122  utilizes an impermeable film and a gap is present between the film and one of the memory metal strips so blood located in the distal body interior can flow therethrough. 
         FIG. 123  illustrates a side perspective view of in vivo use of a deployable basket system of the prior art that uses a standard length pull wire. 
         FIG. 124  illustrates a side perspective view of in vivo use of a deployable basket system of one embodiment of the invention that uses an extra long pull wire. 
         FIG. 125  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 124 ; as compared to  FIG. 124 , the microcatheter has been moved proximally while the guide catheter (larger catheter) remains in the body and, the distal body, which is in the form of a basket comprising a plurality of cells, remains in the intracranial artery. 
         FIG. 126  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 125 ; as compared to  FIG. 125 , the microcatheter has been removed from the body. 
         FIG. 127  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 126  with a distal aspiration catheter advanced distally over the pull wire. 
         FIG. 128  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 127  being used to remove a blood clot. 
         FIG. 129  illustrates a side perspective view of in vivo use of a deployable basket system of another embodiment of the present invention that also uses an extra long pull wire; in  FIG. 129 , the guide catheter is being inserted in a proximal blood vessel (such as the carotid) that has a proximal stenosis. 
         FIG. 130  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 129 ; in  FIG. 130 , the microcatheter is being advanced distally beyond the proximal stenosis. 
         FIG. 131  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 130 ; in  FIG. 131 , the distal body (more particularly a stent retriever) has been deployed in the intracranial artery. 
         FIG. 132  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 131 ; in  FIG. 132 , the microcatheter has been pulled distally. 
         FIG. 133  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 132 ; in  FIG. 133 , a balloon tube has been inserted into the body and advanced distally over the pull wire to the site of the proximal stenosis. 
         FIG. 134  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 133  with the balloon tube inflated to treat the proximal stenosis. 
         FIG. 135  illustrates a side perspective view of in vivo use of the deployable basket system of  FIG. 134  with the balloon tube removed out of the body after treating the proximal stenosis. 
         FIG. 136  illustrates a side perspective view of an embodiment of a pull wire for use with a clot retrieval system of another embodiment of the present invention that includes a proximal bumper, a thin segment, and a distal bumper. 
         FIG. 137  illustrates a side perspective view of the pull wire of  FIG. 136  in use with a clot retrieval system of the present invention that includes a proximal body that is free-floating a fixed distance on the pull wire and a distal body that is not free-floating on the pull wire; in  FIG. 137 , the distal body is in the deployed configuration and the distal body and proximal body are in the relaxed state. 
         FIG. 138  illustrates a side perspective view of the clot retrieval system of  FIG. 137  with the distal body in the retracted configuration and the proximal body and the distal body are relaxed state. 
         FIG. 139  illustrates a side perspective “x-ray” view of the clot retrieval system of  FIG. 137  with the proximal body and the distal body located in a catheter, which is located in a human blood vessel, as visible on x-ray; in  FIG. 139 , the clot is shown for reference even though it may not be visible on x-ray, the distal body and the proximal body are in the collapsed state, and the proximal bumper, the proximal body proximal junction, the distal bumper, the distal body proximal junction, and the lead wire are most visible on the x-ray. 
         FIG. 140  illustrates a side perspective view of the clot retrieval system of  FIG. 139  with the distal body and proximal body deployed from the catheter so that the clot is located between the proximal body and the distal body; in  FIG. 140 , the distal body is in the deployed configuration and the proximal body and the distal body are in the relaxed state. 
         FIG. 141  illustrates a side perspective view of the clot retrieval system of  FIG. 140  with the distal body in the retracted position, capturing the clot in the distal body and proximal body interiors and the proximal body and the distal body are in the relaxed state. 
         FIG. 142  illustrates a side perspective view of the clot retrieval system of  FIG. 141  with the distal body in the retracted position; in  FIG. 142 , the system has been pulled proximally to remove the system from the human&#39;s body and the proximal body and the distal body are in the relaxed state. 
         FIG. 143  illustrates a side perspective view of a clot retrieval system of another embodiment of the present invention that includes a pull wire connected to a moveable slide of a handle, a tube surrounding the pull wire, a proximal body that is free-floating a fixed distance on the pull wire but is not free-floating on the tube, and a distal body that is not free-floating on the pull wire; in  FIG. 143 , the distal body is in the deployed configuration and the proximal body and the distal body are in the relaxed state. 
         FIG. 144  illustrates a side perspective view of the clot retrieval system of  FIG. 143  with the moveable slide actuated/moved proximally by the human user to move the distal body to the retracted configuration and the proximal body and the distal body are in the relaxed state. 
         FIG. 145  illustrates an exploded side perspective view of a clot retrieval system of another embodiment of the present invention that includes a proximal body that will be free-floating a fixed distance on the pull wire and a distal body that will not be free-floating on the pull wire; in  FIG. 145 , the proximal body and the distal body are in the relaxed state. 
         FIG. 146A  illustrates a side perspective view of the clot retrieval system of  FIG. 145  with the distal body deployed from the catheter; in  FIG. 146A , the distal body is in the relaxed state. 
         FIG. 146B  illustrates a side perspective view of the clot retrieval system of  FIG. 146A  after an outer tube has been moved proximally over the pull wire. 
         FIG. 146C  illustrates a side perspective view of the clot retrieval system of  FIG. 146B  after the proximal body and inner tube have been deployed from the outer tube. 
         FIG. 146D  illustrates a side perspective view of the clot retrieval system of  FIG. 146C  after the distal body has been moved proximally toward the proximal body. 
         FIG. 147  illustrates a side perspective view of in vivo use of the clot retrieval system of  FIG. 145 . 
     
    
    
     DETAILED DESCRIPTION 
     With reference to  FIGS. 1-10 , the present disclosure provides a deployable system, generally designated by the numeral  10 , for removing an obstruction such as a blood clot  12  or other object from a blood vessel  14  or other interior lumen of an animal. In addition to a blood clot  12 , the obstruction may be, for example, extruded coils during aneurysm treatment, intravascular embolic material such as onyx or other obstructions requiring mechanical intravascular removal from small distal vessels. In the drawings, not all reference numbers are included in each drawing for the sake of clarity. 
     Referring further to  FIGS. 1-10 , the deployable system  10  includes a pull wire  16  that has a proximal end (not shown) and a distal end  20 . Optionally, the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Preferably, the pull wire  16  is comprised of a biocompatible metallic material. 
     The system  10  further includes a distal body  22 , which is attached to the pull wire  16 . The distal body  22  has a proximal end  24 , a distal end  26 , an interior  28 , and an exterior  30 . The distal body  22  has a collapsed state, wherein the distal body  22  has a first height and width and is configured to fit into a catheter  50  (see subpart (A) of  FIG. 10 ), and a relaxed state wherein the distal body  22  has a different height  32  and width and is configured to expand to about the height and width of a human blood vessel  14  when the distal body  22  is deployed from the catheter  50  (see subparts (B)-(G) of  FIG. 10 ). The distal body  22  further includes a proximal hub/junction  74  and a distal hub/junction  76  that is located distal relative to the proximal hub/junction  74 . In some embodiments, the distal body  22  includes a plurality of strips  40  comprised of a memory metal (e.g., a memory metal alloy such as nitinol) that form the proximal end  24  of the distal body  22 . Optionally, the proximal memory metal strips  40  each have a distal end  44  and a proximal end  42  that forms an openable and closeable claw  46 . Optionally, the proximal memory metal strips  40  are attached to the proximal hub/junction  74  through connector memory metal strips  48 . In such embodiments, the proximal hub/junction  74  may be slideable along at least a segment of the pull wire  16 , in contrast to the distal hub/junction  76 , which is optionally fixed to the pull wire  16  and not slideable along the pull wire  16 . Moving the proximal hub/junction  74  distally and closer to the distal hub/junction  76  (i.e., shortening the distance  88  between the proximal hub/junction  74  and distal hub/junction  76  by moving the proximal hub/junction  74  distally while keeping the distal hub/junction  76  stationary) exerts tension on the connector memory metal strips  48  and, in turn, the proximal memory metal strips  40 . This tension, in turn, causes the proximal ends  42  of the proximal memory metal strips  40  to move radially toward each other and the pull wire  16 . As the proximal ends  42  of the proximal memory metal strips  40  move radially toward each other and the pull wire  16 , the claw  46  (formed by the proximal memory metal strips  40 ) is brought from the open position to at least a partially closed position, which in turn, separates the obstruction  12  from the wall of the human lumen  14  and captures the obstruction  12 . See  FIG. 3H ,  FIG. 8 , subpart (F) of  FIG. 9 , and subparts (F) and (G) of  FIG. 10 . Conversely, preferably, movement of the proximal hub/junction  74  proximally and away from the distal hub/junction  76  (i.e., increasing the distance  88  between the hubs/junctions  74  and  76 ) releases the tension in the proximal memory metal strips  40 , which in turn, causes the proximal ends  42  of the proximal memory metal strips  40  to move away from each other and the pull wire  16 , opening the claw  46 . The claw  46  and proximal hub/junction  74  form several functions. First, as described, closing of the claw  46  captures the obstruction  12 . Second, closing the claw  46  retracts the claw  46  from the wall of the lumen  14  so that the claw  46  does not scrape against (and damage) the lumen wall while capturing the obstruction  12 . Third, closing the claw  46  reduces the height and width of the distal body  22 , which allows the distal body  22  to be re-sheathed in the catheter  50 , which may be desired, for example, if the operator seeks to re-deploy the distal body  22  in another location in the body (which may be the case if the operator originally deploys the distal body  22  in the wrong location in the lumen  14 ). For purposes of the present invention, “closing the claw” embraces both partially closing the claw  46  (where the proximal ends  42  of the proximal memory metal strips  40  do not contact the pull wire  16 ) and fully closing the claw  46  (where the proximal ends  42  contact the pull wire  16 ). 
     The claw  46  may be comprised of any number of proximal memory metal strips  40 . Preferably, however, between 2 and 4 proximal memory metal strips  40  comprise the claw  46  (it being understood that the connector strips  48 , if present, merely serve to tether the claw  46  to the proximal hub/junction  74 ). Preferably, the proximal memory metal strips  40  have a length of between about 10 and about 60 millimeters. The proximal memory metal strips  40  can be thought of as arms of the claw  46 . 
     In some embodiments, the connector strips  48  are integral with the proximal hub/junction  74  (i.e., formed from the same piece of memory metal). In other embodiments, the proximal hub/junction  74  may be welded or soldered to the connector strips  48 . Optionally, in the relaxed state, the proximal memory metal strips  42  are distributed substantially evenly about a perimeter of the distal body  22 . 
     Optionally, the distal body  22  includes a lead wire  52  extending distally from the distal body  22 . Optionally, the lead wire  52  extends distally from the distal hub/junction  76 . If present, the lead wire  52  may be used to facilitate movement of the system  10  in the lumen  14 . 
     Optionally, the distal body  22  includes a basket  54  distal to the proximal memory metal strips  40 , the basket  54  comprised of a plurality of memory metal strips  56  distal relative to the proximal memory metal strips  40 . The distal memory metal strips  56  may, for example, form a basket  54  with a plurality of mesh openings  58 . Optionally, the size of the mesh openings  58  in the basket  54  when the distal body  22  is in its relaxed state is less (preferably significantly less) than the diameter of an average-sized ischemic blood clot  12  so that the blood clot  12  does not escape from the distal basket  54  after being captured by the distal body  22 . Optionally, the basket  54  has an open proximal end  60  and a substantially closed distal end  62 , which is formed by distal tube  76 . Optionally, the distal and proximal hubs/junctions  74  and  76  and the distal basket  54  are comprised of a nitinol having the same material composition. Optionally, the size of the mesh openings  58  decreases from the proximal end  60  of the basket  54  to the distal end  62 . The distal basket  54  is best seen in  FIG. 2  and can be comprised of a different number of cell patterns. The distal basket  54  is not shown in  FIGS. 3-10  for ease of illustrating the other components in the system  10 . 
     Optionally, the proximal hub/junction  74  and the distal hub/junction  76  are cylindrical tubes comprising substantially circular apertures that span the length of the hubs/junctions  74  and  76  and the hubs/junctions  74  and  76  have approximately the same inner diameter  72  and the same outer diameter  70 . Preferably, the inner diameter  72  is at least slightly larger than the diameter of the pull wire  16  so that the pull wire  16  can slide through the proximal hub/junction  74 . In some embodiments, the outer diameters  70  of the proximal and distal hubs/junctions  74  and  76  may be from about 0.011 inches to about 0.054 inches and the inner diameters  72  of the proximal and distal hubs/junctions  74  and  76  may be from about 0.008 inches to about 0.051 inches. 
     Optionally, the distal body  22  further comprises an x-ray marker  64  that is more visible under x-ray as compared to the proximal memory metal strips  40  when the distal body  22  is located in a cranial blood vessel inside the body of a human and the x-ray is taken from outside the human&#39;s body. If the connector strips  48  are welded or soldered to the proximal memory metal strips  40 , the x-ray markers  64  may be, for example, located at the welding or soldering site. In some cases, the increased thickness at the welding or soldering site may in of itself comprise the x-ray marker  64 . Preferably, the x-ray marker  64  is comprised of a radiopaque material. Some examples of radiopaque materials can include, but are not limited to, gold, platinum, palladium, tantalum, tungsten alloy, polymer material loaded with radiopaque filler, and the like. Preferably, the proximal memory metal strips  40  are comprised of nitinol and the x-ray marker  64  is comprised of a material having a density greater than the nitinol. 
     A catheter  50  with an open proximal end (not shown) and an open distal end  66  initially envelopes the system  10 . As used herein, the term “catheter” generally refers to any suitable tube through which the system  10  can be deployed. Preferably, the catheter  50  is sterile and comprised of a biocompatible material (i.e., a material that does not irritate the human body during the course of a 45 minute operation that involves using the system  10  to remove a clot  12  from an intracranial blood vessel  14 ). The catheter  50  can be any suitable shape, including but not limited to generally cylindrical. Preferably, the catheter  50  is a microcatheter. For purposes of the present invention, when it is said that the catheter  50  envelopes the system  10 , it will be understood that the catheter  50  envelopes at least one component of the system  10  (preferably, the distal body  22 , the lead wire  52 , and the pull wire  16 ). In some embodiments, the catheter  50  is about 2.5 French in diameter. Optionally, the catheter  50  is delivered to the region of the lumen  14  that has the obstruction  12  as follows: a guide wire is delivered to the obstruction region past the obstruction  12 ; the catheter  50  is delivered over the guide wire; the guide wire is removed; and the system  10  is delivered with its pull wire  16  and lead wire  52  through the catheter  50 . Optionally, the pull wire  16  is used to push the system  10  through the catheter  50  as well as to retrieve the distal body  22  after capturing the obstruction  14  as described below. The system  10  may utilize a plurality of catheters  50 , such as, for example, a wider catheter that travels to the brain and a very flexible, smaller diameter microcatheter that is delivered from the first catheter and travels through the small arteries of the brain. Preferably, the catheter  50  is comprised of a biocompatible, polymeric material (i.e., one or more polymeric materials such as silicone, PVC, latex rubber or braided nylon). 
     Optionally, in the relaxed, opened-claw state, the distal body  22  or optionally just the distal basket  54  has a tapered shape (e.g., substantially conical or bullet in shape) so that the distal body  22  or just the distal basket  54  tapers from the distal body  22  or the distal basket&#39;s  54  proximal end to the distal end. 
     The proximal end of the system  10  is shown at the left end of  FIGS. 1 and 3-10  and the distal end of the system  10  is shown at the right end of  FIGS. 1 and 3-10  because a principal use of the system  10  is to remove a blood clot  12  from a human intracranial artery  14 , in which case the system  10  generally will enter the artery  14  at its proximal end by the surgeon entering the patient&#39;s body near the groin and pushing the catheter  50  towards the brain. The diameter of human arteries  14  generally decrease from their proximal end to their distal end. However, when used in other types of lumens, the distal body  22  may be located proximally relative to the catheter  50  as the term proximally and distally are used in that lumen. 
     The surgeon may deploy the distal body  22  by, for example, moving the catheter  50  proximally so as to unsheathe the distal body  22  or by pushing the distal body  22  out of the catheter  50 . 
     Use of the system  10  will now be described to remove a blood clot  12  from an intracranial artery  14  of a human ischemic stroke patient, however, it will be appreciated that the system  10  may be used to remove other objects from other interior lumens. 
     A catheter  50 , which contains the collapsed distal body  22  is positioned in the lumen  14  distal to the clot  12 . See subpart (A) of  FIG. 10 . 
     The distal body  22  is deployed from the catheter  50  and the height and width of the distal body  22  expand to about the height and width of the blood vessel  14 . See subpart (B) of  FIG. 10 . 
     The catheter  50  is pulled proximally and a claw-actuator tube  90  is deployed into the blood vessel  14 . See subpart (C) of  FIG. 10 . 
     The distal body  22  is moved proximally so that the clot  12  is located in the interior  28  of the distal body  22 . See subparts (D) and (E) of  FIG. 10 . 
     The claw-actuator tube  90  is moved distally, which pushes the proximal hub/junction  74  distally so that the distance  88  between the proximal hub/junction  74  and the distal hub/junction  76  (which is fixed to the pull wire  16  and kept stationary) decreases. Distal movement of the proximal hub/junction  74  exerts tension on the connector and proximal memory metal strips  40  and  48 , which in turn, closes the claw  46 . See subpart (F) of  FIG. 10 . (The claw actuator tube  90  should float on the pull wire  16 —i.e., have an aperture extending the tube&#39;s length that has a diameter larger than the diameter of the pull wire  16 —and the aperture of the claw actuator tube  90  should be smaller than the diameter of the proximal hub/junction  74  so that the claw actuator tube  90  pushes the proximal hub/junction  74 ). 
     The system  10  is withdrawn proximally and removed from the body. See subpart (G) of  FIG. 10 . 
     To test the efficacy of the system  10 , a distal body  22  with a distal basket  54 , proximal and distal hubs/junctions  74  and  76 , and a claw  46  comprised of three proximal memory metal strips  42  was tested in a flow model that included a tube and a moist cotton ball located in the tube. The cotton ball was used to simulate a blood clot. The system  10  was deployed distal to the cotton ball. The claw  46  was closed by moving the proximal hub/junction  74  distally to capture the cotton ball. The system  10  and cotton ball were withdrawn proximally in the tube. 
     In some embodiments, the distal body  22  is prepared by a process that includes one or more of the following steps, as illustrated in  FIGS. 1-4   
     a) providing a single tube  68  comprised of a memory metal such as nitinol, the single tube  68  having an exterior, a substantially hollow interior, a wall separating the exterior from the substantially hollow interior, an open proximal end  74 , an open distal end  76 , a middle portion  78  between the open proximal end  74  and the open distal end  76  (see  FIG. 1A );
 
b) cutting the wall of the middle portion  78  with a laser  80  (see  FIG. 1B );
 
c) removing the pieces of the middle portion  78  cut by the laser  80  to form a proximal tube  74 , a distal tube  76  and a middle portion  78  comprising a plurality of memory metal strips  82  attached to the proximal tube  74 ;
 
d) altering the shape of the middle portion  78  using a mandrel and allowing the middle portion  78  to expand relative to the distal tube  76  and proximal tube  74  to form the distal basket  54 ;
 
e) quenching the middle portion  78  at room temperature;
 
f) removing the mandrel from the middle portion  78  (see  FIGS. 2 and 3A );
 
g) mechanically or chemically electropolishing the middle portion  78  to remove oxides;
 
h) cutting the memory metal strips  82  to form a first segment  84  comprising the proximal tube  74  and a proximal segment of the memory metal strips  82  and a second segment  86  comprising the distal tube  76  and a distal segment of the memory metal strips  82  (see  FIG. 3B ); and
 
i) joining the proximal segments to the distal segments such that the distal segments form the proximal end  24  of the distal body  22 , such that the proximal tube  74  is located inside the interior  28  of the distal body  22 , and such the proximal tube  74  is located distal relative to the distal body proximal end  24  (see  FIGS. 3C-3E ).
 
     In some embodiments, the method further includes placing the pull wire  16  through the proximal tube  74  so that the proximal tube  74  is slideable along at least a segment of the pull wire  16 . 
     In some embodiments, the method further includes attaching the pull wire  16  to the distal tube  76  so that the distal tube  76  is not slideable along the pull wire  16  but instead the distal tube  76  moves with the pull wire  16 . 
     In some embodiments, after step i, the proximal end  24  of the distal body  22  forms a claw  46  comprised of between 2 to 4 proximal memory metal strips  40 , the claw proximal memory metal strips  40  configured to move towards each other and the pull wire  16  by moving the proximal tube  74  distally and toward the distal tube  76  (i.e., decreasing the distance  88  between the tubes  74  and  76 ) and the claw memory metal strips  40  configured to move away from each other and away from the pull wire (i.e., increasing the distance  88  between the tubes  74  and  76 ) by moving the proximal tube  76  proximally and away from the distal tube  76  (as described previously). 
     In some embodiments, the middle portion  78  is expanded by heating the mandrel and the middle portion  78  by, for example, placing the mandrel and the middle portion  78  in a fluidized sand bath at about 500° C. for about 3 to about 7 minutes. As the middle portion  78  is heated, the heating causes the crystalline structure of the memory metal tube  68  to realign. Preferably, the mandrel is tapered (e.g., substantially conical or bullet in shape) so that the distal basket  54  formed from the middle portion  78  tapers from the proximal end  60  to the distal end  62 . Preferably, the proximal and distal ends of the tube  74  and  76  are not shape set by the mandrel and are not cut by the laser  80  so that the proximal and distal ends  74  and  76  do not change in shape and only slightly expand in size under heating and return to the size of the native tube  68  after the heat is removed. Preferably, the laser cuts are programmed via a computer. To ensure that the laser cuts only one surface of the tube wall at the time (and not the surface directly opposite the desired cutting surface), the laser  80  is preferably focused between the inner and outer diameter of the desired cutting surface and a coolant is passed through the memory metal tube  68  so that the laser  80  cools before reaching the surface directly opposite the desired cutting surface. 
     The portions of the wall not cut by the laser  80  create the distal basket  53 , proximal and distal tubes  74  and  76 , and memory metal strips  40 ,  48  and  56 , as described. 
     Preferably, the memory metal selected for the native tube  68  has a heat of transformation below average human body temperature (37° C.) so that the distal body  22  has sufficient spring and flexibility after deployment from the catheter  50  in the human blood vessel  14 . 
     In some embodiments, the native tube  68  (and hence the distal and proximal tubes  74  and  76 ) have an outer diameter of less than about 4 French, e.g., a diameter of about 1 to about 4 French. In some embodiments, the diameter of the pull wire  16  is between about 0.008 inches and about 0.051, as noted above, and in such embodiments, the diameter of the pull wire  16  may be approximately equal to the inner diameter  72  of the native nitinol tube  68 . 
     Without being bound by any particular theory, it is believed that manufacturing the distal body  22  from a single memory metal tube  68  provides ease of manufacturing and safety from mechanical failure and provides tensile strength necessary for the system  10  to remove hard thrombus  12  and other obstructions. 
     The Embodiments of  FIGS. 11-29   
       FIGS. 11-29  illustrate an alternate embodiment  200  that includes one or more of the following additional features, as described below: twisting proximal strips/tethers  252 , unattached/free distal-pointing crowns  258  that optionally curve inward and have x-ray markers  244 , and enlarged openings/drop zones  262  in the basket  246  immediately distal to the unattached, distal-pointing crowns  258  that allow the obstruction or other object  270  to enter the distal basket interior  222 . 
     More specifically, as shown in  FIGS. 11-29 , the system  200  may include a pull wire  202  having a proximal end  204  and a distal end  206 , as described above, a distal body  216  attached to the pull wire  202 , the distal body  216  comprising an interior  222 , a proximal end  218 , a distal end  220 , a distal body length  226  extending from the proximal end  218  to the distal end  220 , a distal body height  224 , a proximal hub/junction  228  (preferably in the form of a tube and which has a proximal end  230  and a distal end  232 ) forming the proximal end  218  of the distal body  216 , a basket  246  comprised of a plurality of cells/openings  248  formed by a plurality of basket strips  291  that preferably are comprised of a memory metal, optionally a distal hub/junction  236  that forms the distal end  220  of the basket  246  (preferably in the form of a tube that has a proximal end  238  and a distal end  240 ), and a plurality of proximal strips  252  (preferably the proximal strips  252  are comprised of a memory metal), each proximal strip  252  having a proximal end  254  attached to the proximal hub/junction/tube  228 , and a distal end  256  attached to a cell  248  (more specifically a proximal-pointing crown of a cell  248  located at the proximal end of the basket  246 ), the basket comprising a basket interior  292 , the distal body  216  having a relaxed state wherein the distal body  216  has a first height and width, a collapsed state wherein the distal body  216  has a second height and width, the second height less than the first height, the second width less than the first width; and a delivery catheter  208  for delivering the distal body  216 , as described above, having an interior  210 , a proximal end  212  leading to the interior  210  and a distal end  214  leading to the interior  210 , the delivery catheter  208  comprised of a biocompatible (preferably polymeric) material and configured to envelope the distal body  216  when the distal body  216  is in the collapsed state. Optionally, the basket interior  292  is substantially hollow—i.e., unlike U.S. Patent Publication No. 2013/0345739, the basket interior  292  does not contain an inner elongate body. Optionally, instead of a distal hub/junction  236 , the basket  246  includes an open distal end. Optionally, at least two cells  250  of the basket  246  comprise a proximal crown  260  pointing generally in the proximal direction and a distal crown  258  pointing generally in the distal direction, and the distal crowns  258  of the at least two cells  250  are not attached to another cell  248  of the basket  246 . In other words, the distal crowns  258  of at least two cells  250  are free floating and are not attached to any strip except for the strips forming part of the at least two cells  250 ; such distal crowns  258  are referred to below as unattached, distal-pointing crowns  258 . Preferably, the distal tips of the unattached, distal-pointing crowns  258  terminate at an x-ray marker  244 . (Cells labeled with the numerals  250 ,  250 A,  250 B,  250 C, and  250 D refer to the at least two cells that include a proximal crown  260  pointing generally in the proximal direction and an unattached, distal-pointing crown  258 , cells labeled with the numerals  262 ,  262 A,  262 B,  262 C, and  262 D refer to the enlarged cells/drop zones adjacent to (preferably immediately distal to) an unattached, distal-pointing crown  258 , and cells designated with numeral  248  refer to generally the cells of the basket  246 ). (When it is said that the enlarged cells/drop zones  262  are preferably immediately distal to an unattached, distal-pointing crown  258 , it will be understood that at least a portion of an enlarged cell/drop zone  262  is immediately distal to an unattached, distal-pointing crown  258 , and that a portion of the enlarged cell/drop zone  262  may be proximal to an unattached, distal-pointing crown  258 , as shown in  FIGS. 11-12  due to the shape of the enlarged cells/drop zones  262 ). It will be understood that part number  250  refers generally to one or more of the at least two cells, whereas part numbers  250 A,  250 B,  250 C, and  250 D refer to a specific one of the at least two cells. Similarly, it will be understood that part number  262  refers generally to one or more of the enlarged cells/drop zones, whereas part numbers  262 A,  262 B,  262 C, and  262 D refer to a specific one of the enlarged cells/drop zones. Similarly, it will be understood that part number  258  refers generally to one or more of the unattached, distal-pointing crowns, whereas part numbers  258 A,  258 B,  258 C, and  258 D refer to a specific one of the unattached, distal-pointing crowns. 
     Optionally, at least two of the unattached, distal-pointing crowns  258  are located approximately 180 degrees (e.g., about 150 to about 180 degrees) relative to each other and approximately the same distance from the proximal hub/junction/tube  228 , as best seen in  FIG. 12A . Optionally, the basket  246  comprises a first pair of unattached, distal-pointing crowns  258 A and  258 B, each of the first pair of unattached, distal-pointing crowns  258 A and  258 B is located approximately the same distance from the proximal hub/junction/tube  228  and approximately 180 degrees relative to each other, and the basket  246  further comprises a second pair of unattached, distal-pointing crowns  258 C and  258 D located distally relative to, and approximately 90 degrees (e.g., between about 60 and about 90 degrees) relative to, the first pair of unattached, distal-pointing crowns  258 A and  258 B. Optionally, the second pair of unattached, distal-pointing crowns  258 C and  258 D form cells  250 C and  250 D that are adjacent to, but offset from, the cells  250 A and  250 B formed by the first pair of unattached, distal-pointing crowns  258 A and  258 B. (In other words, optionally, the center of cell  250 A is about 90 degrees relative to the centers of cells  250 C and  250 D and optionally the center of cell  250 B is also about 90 degrees relative to the centers of cells  250 C and  250 D). Optionally, at least one of (and preferably all) the unattached, distal-pointing crowns  258 A,  258 B,  258 C or  258 D comprise an x-ray marker  244  that is more visible under x-ray as compared to the basket strips  291  when the distal body  216  is located in a cranial blood vessel  266  inside the body of a human and the x-ray is taken from outside the human&#39;s body. Preferably, the x-ray marker  244  is a radiopaque material. Some examples of radiopaque materials can include, but are not limited to, gold, platinum, palladium, tantalum, tungsten alloy, polymer material loaded with radiopaque filler, and the like. Preferably, the basket strips  291  are comprised of nitinol and the x-ray marker  244  is comprised of a material having a density greater than the nitinol. In some embodiments, the x-ray markers  244  comprise a heavy metal welded or soldered to the unattached, distal-pointing crowns  258 . Optionally, the unattached, distal-pointing crowns  258  curve subtly towards the interior  222  of the distal basket  246 , which decreases the likelihood that the unattached, distal-pointing crowns  258  will rub against and damage the vessel wall  268 . Optionally, the basket  246  comprises at least two cells proximal to the at least two cells  250  that include the unattached, distal-pointing crowns  258 . Optionally, the unattached, distal-pointing distal crowns  258  are located about at least 5 mm (e.g., about 5 to about 30 mm) from the proximal hub/junction/tube  228 . Optionally, the unattached, distal-pointing crowns  258  are located at least about 5 mm from the distal hub/junction/tube  236 . Optionally, the unattached, distal-pointing crowns  258  of the at least two cells  250  also each form part (namely a portion of the proximal boundary) of an enlarged cell  262  (which is the entry point of hard thrombus  270 B into the basket interior  222 ) and further wherein the surface area of the enlarged cells  262  in the relaxed state is greater than the surface area of the other cells of the basket  246  in the relaxed state. Optionally, the unattached, distal-pointing crowns  258  serve several functions: 1) they form flex points of the basket  246 , which makes it easier for the system  200  to navigate the curves of the blood vessels  266  of the brains; 2) through the use of x-ray markers  244  on the unattached, distal-pointing crowns  258 , they allow the operator to locate the enlarged cells  262  of the basket  246  that form the point at which hard thrombuses  270 B enter the basket  246 ; and 3) they allow the operator to ratchet or force the object  270  into the basket  246  by moving the unattached, distal-pointing crowns  258  proximally and distally relative to the object  270 . (As explained below, the numeral  270  refers to clots/thrombuses and other objects generally, and  270 A refers to a soft clot,  270 B refers to a hard clot and  270 C refers to a deformable, cohesive, adherent clot). Optionally, the proximal end  254  of a proximal strip  252  is located about 65-180 degrees (preferably approximately 180 degrees) relative to the distal end  256  of the same proximal strip  252 , as best seen in  FIG. 12B . In other words, preferably the proximal end  254  of a first proximal strip  252  is attached to the 12 o&#39;clock position on the proximal tube  228  and the distal end  256  of the first proximal strip  252  (which terminates at a proximal cell  248  of the basket  246 ) is located at the 6 o&#39;clock position (i.e., 180 degrees from the start position), and the proximal end  254  of a second proximal strip  252  is attached to the 6 o&#39;clock position on the proximal tube  228  and the distal end  254  (which terminates at a cell  248  of the basket  246 ) of the second proximal strip  252  is located at the 12 o&#39;clock position (i.e., 180 degrees from the start position). This twisting feature serves two functions: 1) it allows the proximal strips  252  to surround the object  270 ; and 2) it allows the manufacturer to insert a mandrel into the basket  246  during the shape-setting procedure. Optionally, the pull wire  202  is attached to the proximal tube  228  (e.g., by gluing, welding, soldering or the like). Preferably, the pull wire  202  does not extend through the distal basket interior  222 . Optionally, the proximal strips  252  are integral with the distal end  232  of the proximal tube  228  and the entire distal body  216  is created from a single tube  264  of a memory metal. Optionally, the proximal crowns  260  of the at least two cells  250  that include the unattached, distal pointing-crowns  258  are each attached to another cell  248  of the basket  246 . In other words, preferably the basket  246  does not have any free-floating proximal-pointing crowns, as free-floating proximal-pointing crowns could damage the vessel  266  when the distal body  216  is pulled proximally. Optionally, the system  200  further comprises a lead wire  286  extending distally from the distal tube  236 , the lead wire  286  having a length of from about 3 mm to about 10 mm. Optionally, the distal hub/junction/tube  236 , the proximal hub/junction/tube  228 , and the basket  246  are comprised of a nitinol having the same material composition. In other words, as with the prior embodiment of  FIGS. 1-10 , optionally the entire distal body  216  is manufactured from a single tube of nitinol  264 . Optionally, the proximal and distal hubs/junctions/tubes  228  and  236  comprise an x-ray marker  244  that is more visible under x-ray as compared to the basket strips  291  when the distal body  216  is located in a cranial blood vessel  266  inside the body of a human and the x-ray is taken from outside the human&#39;s body. Preferably, the x-ray marker  244  is a radiopaque material. Some examples of radiopaque materials can include, but are not limited to, gold, platinum, palladium, tantalum, tungsten alloy, polymer material loaded with radiopaque filler, and the like. Preferably, the basket strips  291  are comprised of nitinol and the x-ray marker  244  is comprised of a material having a density greater than the nitinol. In some embodiments, the proximal and distal hubs/junctions/tube interiors  234  and  242  may comprise tantalum welded or otherwise attached to the interior  234  and  242  of the proximal and distal hubs/junctions/tubes  228  and  236 . Optionally, the proximal and the distal tubes  228  and  236  are generally cylindrical in shape and each has an outer diameter and an inner diameter, the inner diameter forming apertures of the proximal and distal tubes  228  and  236  and further wherein the outer diameters of the proximal and distal tubes  228  and  236  are substantially the same size and further wherein the inner diameters of the proximal and distal tubes  228  and  236  are substantially the same size. Optionally, the outer diameters of the proximal and distal tubes  228  and  236  are from about 0.011 inches to about 0.054 inches, and further wherein the inner diameters of the proximal and distal tubes  228  and  236  are from about 0.008 inches to about 0.051 inches. Optionally, the pull wire  202  is generally cylindrical and further wherein the diameter of the pull wire  202  is between about 0.008 inches and about 0.051 inches. Optionally, the distal body  216  has a length of between about 10 and about 60 millimeters. Optionally, the first height  224  and first width  226  of the distal body  216  are between about 2 millimeters and about 6 millimeters. 
     The present disclosure also provides a method of removing a clot or other object  270  from an interior lumen  266  of an animal, the method comprising the steps of: 
     a) providing the system  200  of  FIGS. 11-29 , wherein at least two cells  250  of the basket  246  comprise a proximal crown  260  pointing generally in the proximal direction and a distal crown  258  pointing generally in the distal direction, and the distal crowns  258  of the at least two cells  250  are not attached to another cell  248  of the basket  246  (i.e., free-floating), and further wherein at least one of the unattached, distal-pointing crowns  258  comprises an x-ray marker  244 ; 
     b) positioning the system  200  in the lumen  266 ; 
     c) deploying the distal body  216  from the distal end  214  of the delivery catheter  208 ; 
     d) allowing the height and width  224  and  226  of the distal body  216  to increase; 
     e) irradiating the x-ray marker  244  with x-ray radiation and 
     f) moving the object  270  into the distal basket interior  222 . 
     Optionally, the object  270  enters the distal basket interior  222  adjacent to (preferably adjacent and immediately distal to) at least one of the unattached, distal-pointing crowns  258 —i.e., in the enlarged cells/drop zones  262 . In some embodiments, the distal body  216  is deployed so that at least one (e.g., preferably the two proximal  258 A and  258 B) of the unattached, distal-pointing crowns  258  is distal to the object  270 . As explained below, the x-ray markers  244  of the unattached, distal-pointing crowns  258  are used to locate the distal body  216  relative to the clot or other object  270 . It will be appreciated that clots  270  can generally be located in blood vessels  266  by injecting a contrast dye, for example, into the blood vessel  266  proximal and distal to the believed area of obstruction and viewing on an x-ray where the fluid stops moving in the blood vessel  266 . It will also appreciated that if the object  270  is not a blood clot but is a radio-opaque object, the object  270  may be viewed on an x-ray. 
       FIGS. 11 and 14B  illustrate a first, perspective view of one embodiment of a distal body  216  with twisting proximal strips  252 , unattached distal-pointing crowns  258  that subtly curve inward and have x-ray markers  244 , and enlarged openings/drop zones  262  in the basket  246  that allow the obstruction or other object  270  to enter. In  FIGS. 11 and 14B , the distal body  216  is in Orientation  1 . (To prepare a basket  246  with unattached distal-pointing crowns  258  that curve inward toward the basket interior  292 , a mandrel  900  such as that illustrated in  FIGS. 63 and 64  may be used. The mandrel  900  includes a generally cylindrical body  901  with tapered proximal and distal ends  902  and  903  that slope like the ends of a pencil. The cylindrical body  901  includes two grooves  904  that extend around the circumference of the cylindrical body  901 . The grooves  904  include tapered portions  905  that slope towards the distal end  903 , which are designed to shape the unattached distal-pointing crowns  258 . The grooves  904  are generally in the shape of a truncated cone, as shown in  FIGS. 63-64 ). The two proximal, unattached distal-pointing crowns  258 A and  258 B are located approximately the same distance from the proximal hub/junction/tube  228  and are oriented approximately 180 degrees relative to each other. The two distal, unattached distal-pointing crowns  258 C and  258 D are located approximately the same distance from the proximal hub/junction/tube  228  as each other (and distal to the two proximal, unattached distal-pointing crowns  258 A and  258 B) and are oriented approximately 180 degrees relative to each other and approximately 90 degrees to the proximal, unattached distal-pointing crowns  258 A and  258 B. The two proximal enlarged openings/drop zones  262 A and  262 B distal to the proximal, unattached distal pointing crowns  258 A and  258 B are located approximately the same distance from the proximal hub/junction/tube  228  and the centers of the two proximal enlarged openings/drop zones  262 A and  262 B are oriented approximately 180 degrees relative to each other. (As noted above, preferably, the proximal, unattached distal-pointing crowns  258 A and  258 B form part of the proximal boundary of the proximal, enlarged cells/drop zones  262 A and  262 B, and the distal, unattached distal-pointing crowns  258 C and  258 C form part of the proximal boundary of the distal, enlarged cells/drop zones  262 C and  262 D). The two distal, enlarged openings/drop zones  262 C and  262 D distal to the distal, unattached distal pointing crowns  258 C and  258 D are located approximately the same distance from the proximal hub/junction/tube  228  and the centers of the distal, enlarged openings/drop zones  262 C and  262 D are oriented approximately 180 degrees relative to each other and approximately 90 degrees relative to the proximal enlarged openings/drop zones  262 A and  262 B.  FIGS. 12A and 14C  illustrate a second view of the distal body  216  of  FIG. 11  (Orientation  2 ).  FIG. 13  is a close-up view of two unattached, distal-pointing crowns  262 . The lines in  FIG. 14  show how a nitinol tube  264  is cut with a laser to create the distal body  216  shown in  FIG. 14B  and  FIG. 14C . It will be appreciated that  FIG. 14B  is a simplified view of the distal body  216  and orientation shown in  FIG. 11  and  FIG. 14C  is a simplified view of the distal body  216  and orientation shown in  FIG. 12A . 
     As described below,  FIGS. 15-19  describe how the distal body  216  is used to retrieve, soft clots  270 A, hard clots  270 B, and deformable, cohesive adhesive clots  270 C in a human intracranial artery  266 . (In  FIGS. 15-19 , the center of the artery  266  is denominated by the dashed line). As explained below, the distal body  216  has four rows of x-ray markers namely, 1) a first row of one x-ray marker, which is located inside the proximal tube denominated by the numeral  228 ,  244 ; 2) a second row of two x-ray markers, which are located at the two proximal, unattached distal-pointing crowns (the two markers are oriented 180 degrees relative to each other) denominated by the numerals  258 A,  244  and  258 B,  244 ; 3) a third row of two x-ray markers, which are located at the two distal, unattached distal-pointing crowns (these two markers are oriented 180 degrees relative to each other and 90 degrees relative to the two proximal, unattached distal-pointing crowns) denominated by the numerals  258 C,  244  and  258 D,  244 ; and 4) a fourth row of one x-ray marker, which is located inside the distal tube denominated by the numeral  236 ,  244 . (It will be appreciated that the first number in the sequence describes the position of the x-ray marker and the second number,  244 , represents the fact that the item is an x-ray marker). As explained below, upon deploying the distal body  216  so that the two proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244  are immediately distal to the clot  270 , the surgeon interventionalist (i.e., operator of the distal body  216 ) detects the four rows of x-ray markers using x-ray radiation from a first vantage point and from a second vantage point that is offset from the first vantage point (e.g. 90 degrees). Next, the surgeon moves the distal body  216  proximally relative to the clot  270  and takes additional x-rays from the first and second vantage points. As explained in greater detail below, the surgeon uses the x-ray markers of the proximal and distal, unattached distal-pointing crowns, namely  258 A,  244 ;  258 B,  244 ;  258 C,  244 ; and  258 D,  244  (more specifically, the convergence or lack thereof of the proximal and distal, unattached distal-pointing crowns  258 A,  244 ;  258 B,  244 ;  258 C,  244 ; and  258 D,  244  as shown on the x-ray) to determine whether the clot  270  is located inside the distal body interior  222  or whether the clot  270  is collapsing the distal body  216 . 
     More specifically,  FIGS. 15A-G  illustrate stepwise use of the distal body  216  in retrieving a soft clot  270 A in a human intracranial artery  266 . (The distal body  216  in  FIGS. 15A-15G  is in Orientation  1 ). First, as always, the surgeon determines the location of the clot  270 A in the vessel  266  using, for example, a contrast dye injected proximal and distal to the clot  270 A. Next, the delivery catheter  208 , which is enveloping the distal body  216 , is positioned in the blood vessel  266  so that the two proximal, unattached distal-pointing crowns  258 A and  258 B are immediately distal to the clot  270 A. See  FIG. 15B . The distal body  216  is then deployed from the delivery catheter  208  by moving the catheter  208  proximally. The soft clot  270 A, which is unable to collapse the distal body  216 , then enters the distal body interior  222 . See  FIG. 15C . However, at this time, the surgeon is unaware that the clot  270 A has entered into the distal body interior  222 . Thus, without moving the distal body  216 , the surgeon irradiates the four rows of x-ray markers at a first vantage point (i.e., from the front of the distal body  216  in the orientation shown in  FIGS. 15A-G ; i.e., into the page). As shown in  FIG. 15D , the first vantage point shows four rows of x-ray markers. The first row is a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 ; the proximal tube x-ray marker  228 ,  244  always appears as a single point. The second row is a single point, which represents the x-ray marker located at the front, proximal, unattached distal-pointing crown  258 B,  244 ; the reason that this second row of markers is a single point is that the rear x-ray marker of the second row  258 A,  244  is hidden from view because it is directly behind the front x-ray marker of the second row  258 B,  244 . The third row has two points, which represents the two x-ray markers located at the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244 ; the reason that this third row of markers has two points is that neither marker in the third row  258 C,  244  and  258 D,  244  is hidden from view on the x-ray at this angle—rather, one marker  258 C,  244  is located above the other marker  258 D,  244 —and as shown in  FIG. 15C , the distal body  216  is not collapsed at the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244 . The fourth row is a single point, which represents the x-ray marker located in the distal tube  236 ,  244 ; the distal tube x-ray marker  236 ,  244  always appears as a single point. Without moving the distal body  216 , the surgeon then irradiates the four rows of x-ray markers from a second vantage point 90 degrees offset from the first vantage point (i.e., from the bottom of the distal body  216  in the orientation shown in  FIG. 15A ). As shown, the first row is, as always, a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 . The second row has two points, which represents the two x-ray markers located at the proximal, unattached distal-pointing crown  258 A,  244  and  258 B,  244 ; the reason that this second row of markers shows up as two points is that neither marker  258 A,  244  and  258 B,  244  in the second row is hidden from view on the x-ray at this offset angle—rather, one marker  258 B,  244  is located above the other marker  258 A,  244 —and the distal body  216  is not collapsed at the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244 . The third row is a single point, which represents the x-ray marker located at the bottom, distal, unattached distal-pointing crown  258 D,  244 ; the reason that this third row of markers is a single point is that the top x-ray marker of the third row  258 C,  244  is directly behind the bottom x-ray marker of the third row  258 D,  244 , and thus, hidden from view. The fourth row is, as always, a single point, which represents the x-ray marker located in the distal tube  236 ,  244 . The surgeon, thus, concludes that neither the x-ray markers at the second row  258 A,  244  and  258 B,  244  nor the x-ray markers at the third row  258 C,  244  and  258 D,  244  (i.e., the x-ray markers at both the proximal and distal unattached distal pointing-crowns) have converged. As shown in  FIG. 15E , the surgeon then moves the distal body  216  proximally relative to the soft clot  270 A so that the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244  are immediately distal to the clot  270 A and then the surgeon irradiates the four rows of x-ray markers again from the first vantage point and the second vantage point. As shown in  FIG. 15F , the results are the same as  FIG. 15D . With the results from  FIGS. 15D and 15F , the surgeon concludes that neither x-ray markers at the second row  258 A,  244  and  258 B,  244  nor the x-ray markers at the third row  258 C,  244  and  258 D,  244  (i.e., the x-ray markers at both the proximal and distal unattached distal pointing-crowns) converged at either the original position of the distal body  216  ( FIGS. 15C and 15D ) or the position after moving the distal body  216  proximally ( FIGS. 15E and 15F ), and, thus, the distal body  216  was expanded in the vessel  266  in both positions. Thus, the surgeon concludes that the clot is a soft clot  270 A that has entered into the distal body interior  222  and the surgeon removes the distal body  216  and the soft clot  270 A, captured by the distal body  216 , by moving the distal body  216  proximally out of the vessel  266 , as shown in  FIG. 15G . 
       FIGS. 16A-H  illustrate stepwise use of the distal body  216  in retrieving a hard clot  270 B in a human intracranial artery  266 . (In  FIGS. 16A-H , the distal body  216  is in Orientation  1 ). First, as always, the surgeon determines the location of the clot  270 B in the vessel  266  using, for example, a contrast dye injected proximal and distal to the clot  270 B. Next, the delivery catheter  208 , which is enveloping the distal body  216 , is positioned in the blood vessel  266  so that the two proximal, unattached distal-pointing crowns  258 A and  258 B are immediately distal to the clot  270 B. See  FIG. 16B . The distal body  216  is then deployed from the delivery catheter  208  by moving the catheter  208  proximally. The hard clot  270 B, which is located above the distal body  216 , collapses the distal body  216 , as shown in  FIG. 16C . However, at this time, the surgeon is unaware that the clot  270 B has collapsed the distal body  216 . Thus, without moving the distal body  216 , the surgeon irradiates the x-ray markers at a first vantage point (i.e., from the front of the distal body  216 ; i.e., into the page). As shown in  FIG. 16D , the first vantage point shows four rows of x-ray markers. The first row is, as always, a single point, representing the x-ray marker located in the proximal tube—i.e.,  228 ,  244 . The second row is a single point, which represents the x-ray marker located at the front, proximal, unattached distal-pointing crown  258 B,  244 ; the reason that this second row of markers is a single point is that the rear x-ray marker of the second row  258 A,  244  is hidden from view because it is directly behind the front x-ray marker of the second row  258 B,  244 . The third row has two points, which represents the two x-ray markers located at the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244 ; the reason that this third row of markers has two points is that neither marker in the third row is hidden from view on the x-ray at this angle—rather, one marker  258 C,  244  is located above the other marker  258 D,  244 —and as shown in  FIG. 16C , the distal body  216  is not collapsed at the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244 . The fourth row is, as always, a single point, representing the x-ray marker located in the distal tube  236 ,  244 . Without moving the distal body  216 , the surgeon then irradiates the markers from a second vantage point 90 degrees offset from the first vantage point (i.e., from the bottom of the distal body  216 ). As shown, the first row is, as always, a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 . The second row has two points, which represents the two x-ray markers located at the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244 ; the reason that this second row of markers shows up as two points is that neither marker in the second row is hidden from view on the x-ray at this offset angle—rather, one marker  258 B,  244  is located above the other marker  258 A,  244 —and although the distal body  216  is collapsed at the proximal, unattached distal-pointing crowns as shown in  FIG. 16C , the second row of x-ray markers have not converged because the clot  270 B is on top of the second row of x-ray markers. The third row is a single point, which represents the x-ray marker located at the bottom, distal, unattached distal-pointing crown  258 D,  244 ; the reason that this third row of markers is a single point is that the top x-ray marker of the third row  258 C,  244  is directly behind the bottom x-ray marker of the third row  258 D,  244 , and thus, hidden from view. The fourth row is, as always, a single point, which represents the x-ray marker located in the distal tube  236 ,  244 . The surgeon, thus, concludes that neither the second row  258 A,  244  and  258 B,  244  nor the third row  258 C,  244  and  258 D,  244  of x-ray markers (i.e., the x-ray markers at both the proximal and distal unattached distal pointing-crowns) has converged. As shown in  FIG. 16E , the surgeon then moves the distal body  216  proximally so that the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244  are immediately distal to the clot  270 B and the surgeon then irradiates the x-markers again from the first vantage point. As shown in  FIG. 16F , the first row is, as always, a single point, representing the x-ray marker located in the proximal tube  228 ,  244 . The second row is a single point, which represents the x-ray marker located at the front, proximal, unattached distal-pointing crown  258 B,  244 ; the reason that this second row of markers is a single point is that the rear x-ray marker of the second row  258 A,  244  is hidden from view because it is directly behind the front x-ray marker of the second row  258 B,  244 . The third row has only one point because the clot  270 B, which is on top of the third row of x-ray markers  258 C,  244  and  258 D,  244  (i.e., the markers at the distal, unattached distal-pointing crowns), has pushed the third row of x-ray markers  258 C,  244  and  258 D,  244  together. The fourth row is, as always, a single point, representing the x-ray marker located in the distal tube  236 ,  244 . Without moving the distal body  216 , the surgeon then irradiates the markers from a second vantage point 90 degrees offset from the first vantage point (i.e., from the bottom of the distal body). As shown, the first row is, as always, a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 . The second row has two points, which represents the two x-ray markers located at the proximal, unattached distal-pointing crown  258 A,  244  and  258 B,  244 ; the reason that this second row of markers shows up as two points is that neither marker in the second row is hidden from view on the x-ray at this offset angle and the distal body  216  is not collapsed at the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244 . The third row is a single point, which represents the x-ray marker located at the bottom, distal, unattached distal-pointing crown  258 D,  244 ; the reason that this third row of markers is a single point is that the bottom x-ray marker of the third row  258 D,  244  is directly in front of the top x-ray marker of the third row  258 C,  244 , and thus, the top x-ray marker of the third row  258 C,  244  is hidden from view. The fourth row is, as always, a single point, which represents the x-ray marker located in the distal tube  236 ,  244 . Knowing that the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244  have converged as shown in  FIG. 16F , the surgeon moves the distal body  216  proximally and the hard clot  270 B falls into the distal body interior  222  in the enlarged cell/drop zone  262 C immediately distal to the top, distal, unattached distal-pointing crown  258 C. See  FIG. 16G . To confirm that the hard clot  270 B has entered the distal body interior  222 , the surgeon takes x-rays from the first and second vantage points. The results are shown in  FIG. 16H . As compared to  16 F, the front x-ray view of  FIG. 16H  shows that the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244  are not converged, and, thus, the surgeon concludes that the hard clot  270 B has entered the distal body interior  222 . The surgeon then removes the distal body  216  and the hard clot  270 B, captured by the distal body  216 , by moving the distal body  216  proximally out of the vessel  266 . 
       FIGS. 17A-G  illustrate stepwise use of the distal body  216  in retrieving a soft clot  270 A in a human intracranial artery  266 . (In  FIGS. 17A-G , the distal body  216  is in Orientation  2 ). First, as always, the surgeon determines the location of the clot  270 A in the vessel  266  using, for example, a contrast dye injected proximal and distal to the clot  270 A. Next, the delivery catheter  208 , which is enveloping the distal body  216 , is positioned in the blood vessel  266  so that the two proximal, unattached distal-pointing crowns  258 A and  258 B are immediately distal to the clot  270 A. See  FIG. 17B . The distal body  216  is then deployed from the catheter  208  by moving the catheter  208  proximally. The soft clot  270 A, which is unable to collapse the distal body  216 , then enters the distal body interior  222 . See  FIG. 17C . However, at this time, the surgeon is unaware that the clot  270 A has entered into the distal body interior  222 . Thus, without moving the distal body  216 , the surgeon irradiates the x-ray markers at a first vantage point (i.e., from the front of the distal body; into the page). As shown in  FIG. 17D , the first vantage point shows four rows of x-ray markers. The first row is, as always, a single point, representing the x-ray marker located in the proximal tube  228 ,  244 . The second row has two points, which represents the two x-ray markers located at the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244 ; the reason that this second row of markers has two points is that neither marker in the second row is hidden from view on the x-ray at this angle—rather, one marker  258 A,  244  is located above the other marker  258 B,  244 —and as shown in  FIG. 17C , the distal body  216  is not collapsed at the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244 . The third row has a single point, which represents the x-ray marker located at the front (in Orientation  2 ), distal, unattached distal-pointing crown  258 C,  244 ; the reason that this third row of markers is a single point is that the rear (in Orientation  2 ) x-ray marker  258 D,  244  of the third row is hidden from view because it is directly behind the front x-ray marker  258 C,  244  of the third row. The fourth row is, as always, a single point, representing the x-ray marker located in the distal tube  236 ,  244 . Without moving the distal body, the surgeon then irradiates the markers from a second vantage point 90 degrees offset from the first vantage point (i.e., from the bottom of the distal body, as shown in this view). As shown, the first row is, as always, a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 . The second row is a single point, which represents the x-ray marker located at the bottom (in Orientation  2 ), proximal, unattached distal-pointing crown  258 B,  244 ; the reason that this second row of markers is a single point is that the top (in Orientation  2 ) x-ray marker of the second row  258 A,  244  is directly behind the bottom x-ray marker of the second row  258 B,  244 , and thus, hidden from view. The third row has two points, which represents the two x-ray markers located at the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244 ; the reason that this third row of markers shows up as two points is that neither marker in the third row is hidden from view on the x-ray at this offset angle and the distal body  216  is not collapsed at the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244 . The fourth row is, as always, a single point, which represents the x-ray marker located in the distal tube  236 ,  244 . The surgeon, thus, concludes that neither the second row  258 A,  244  and  258 B,  244  nor the third row of x-ray markers  258 C,  244  and  258 D,  244  (i.e., the x-ray markers at both the proximal and distal unattached distal pointing-crowns) has converged. As shown in  FIG. 17E , the surgeon then moves the distal body  216  proximally relative to the clot  270 A so that the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244  are immediately distal to the clot  270 A and then the surgeon irradiates the x-markers again from the first vantage point and the second vantage point. As shown in  FIG. 17F , the results are the same as  FIG. 17D . With the results from  FIGS. 17D and 17F , the surgeon concludes that neither the second row  258 A,  244  and  258 B,  244  nor the third row of x-ray markers  258 C,  244  and  258 D,  244  (i.e., the x-ray markers at both the proximal and distal unattached distal pointing-crowns) were converged at either the original position of the distal body  216  ( FIGS. 17C and 17D ) or the position after moving the distal body  216  proximally ( FIGS. 17E and 17F ), and, thus, the distal body  216  was expanded in the vessel  266  in both positions. Thus, the surgeon concludes that the clot  270 A is a soft clot  270 A that has entered into the distal body interior  222  and the surgeon removes the distal body  216  and the soft clot  270 A, captured by the distal body  216 , by moving the distal body  216  proximally out of the vessel  266 , as shown in  FIG. 17G . 
       FIGS. 18A-G  illustrate stepwise use of the distal body  216  in retrieving a hard clot  270 B in a human intracranial artery  266 . (In  FIGS. 18A-G , the distal body  216  is in Orientation  2 ). (As described below, the primary differences between  FIGS. 18A-G  and  FIGS. 16A-G  is that the clot  270 B enters the distal body interior  222  in an enlarged cell/drop zone  262 A immediately distal to one of the proximal, unattached distal-pointing crowns  258 A in  FIGS. 18A-G , as compared to  FIGS. 16A-G  where the clot  270 B enters the distal body interior  222  in an enlarged cell/drop zone  262 C immediately distal to one of the distal, unattached distal-pointing crowns  258 C). First, as always, the surgeon determines the location of the clot  270 B in the vessel  266  using, for example, a contrast dye injected proximal and distal to the clot  270 B. Next, the delivery catheter  208 , which is enveloping the distal body  216 , is positioned in the blood vessel  266  so that the two proximal, unattached distal-pointing crowns  258 A and  258 B are immediately distal to the clot  270 B. See  FIG. 18B . The distal body  216  is then deployed from the catheter  208  by moving the catheter  208  proximally. The hard clot  270 B, which is located above the distal body  216 , collapses the distal body  216 , as shown in  FIG. 18C . However, at this time, the surgeon is unaware that the clot  270 B has collapsed the distal body  216 . Thus, without moving the distal body  216 , the surgeon irradiates the x-ray markers at a first vantage point (i.e., from the front of the distal body in Orientation  2 ; into the page). As shown in  FIG. 18D , the first vantage point shows four rows of x-ray markers. The first row is, as always, a single point, representing the x-ray marker located in the proximal tube  228 ,  244 . The second row has only one point because the clot  270 B, which is on top of the second row of x-ray markers  258 A,  244  and  258 B,  244  (i.e., the markers at the proximal, unattached distal-pointing crowns), has pushed them together. The third row has only one point, which represents the x-ray marker located at the front (in Orientation  2 ), proximal, unattached distal-pointing crown  258 C,  244 ; the reason that this third row of markers is a single point is that the rear (in this view) x-ray marker of the third row  258 D,  244  is hidden from view because it is directly behind the front x-ray marker of the third row  258 C,  244 . The fourth row is, as always, a single point, representing the x-ray marker located in the distal tube  236 ,  244 . Without moving the distal body, the surgeon then irradiates the markers from a second vantage point 90 degrees offset from the first vantage point (i.e., from the bottom of the distal body  216 ). As shown, the first row is, as always, a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 . The second row has a single point because the top (in Orientation  2 ) x-ray marker of the second row  258 A,  244  is located behind the bottom (in Orientation  2 ) x-ray marker  258 B,  244  and thus, the top x-ray marker of the second row  258 A,  244  is hidden from view. The third row has two points, which represents the x-ray markers located at the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244 ; in this x-ray view neither of the x-ray markers of the third row is hidden from view. The fourth row is, as always, a single point, which represents the x-ray marker located in the distal tube  236 ,  244 . The surgeon, thus, concludes that the second row of x-ray markers  258 A,  244  and  258 B,  244  (i.e., the x-ray markers at the proximal, unattached distal pointing-crowns) has converged. As shown in  FIG. 18E , the surgeon then moves the distal body  216  proximally so that the distal, unattached distal-pointing crowns  258 C,  244  and  258 D,  244  are immediately distal to the clot  270 B. Unbeknownst to the surgeon, the clot  270 B enters the distal body interior  222  immediately distal to the top (in Orientation  2 ), proximal unattached distal-pointing crown  258 A and the distal body  216  is no longer collapsed. The surgeon then irradiates the x-markers again from the first vantage point. As shown in  FIG. 18F , the first row is, as always, a single point, representing the x-ray marker located in the proximal tube  228 ,  244 . The second row has two x-ray markers because the distal body  216  is not collapsed and neither the top (in Orientation  2 )  258 A,  244  nor the bottom  258 B,  244  (in Orientation  2 ) x-ray marker of the second row (i.e., the marker at the proximal, unattached distal-pointing crowns) is hidden from view. The third row has only one point because the rear (in Orientation  2 ), distal unattached distal-pointing crown  258 D,  244  is hidden behind the front (in Orientation  2 ), distal, unattached distal pointing-crown  258 C,  244 . The fourth row is, as always, a single point, representing the x-ray marker located in the distal tube  236 ,  244 . Without moving the distal body  216 , the surgeon then irradiates the markers from a second vantage point 90 degrees offset from the first vantage point (i.e., from the bottom of the distal body  216 ). As shown, the first row is, as always, a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 . The second row has a single point because the x-ray marker at the top (in Orientation  2 ), proximal, unattached distal-pointing crown  258 A,  244  is hidden behind the bottom (in Orientation  2 ), proximal, unattached-distal pointing crown  258 B,  244 . The third row has two points because neither the front nor the rear x-ray markers at the distal, unattached, distal-pointing crowns  258 C,  244  and  258 D,  244  is hidden from view. The fourth row is, as always, a single point, which represents the x-ray marker located in the distal tube  236 ,  244 . Based on the information from  FIGS. 18D and 18F , the surgeon concludes that the clot  270 B has entered into the distal body interior  222 . The surgeon then removes the distal body  216  and the hard clot  270 B, captured by the distal body  216 , by moving the distal body  216  proximally out of the vessel  266 , as shown in  FIG. 18G . Upon comparing  FIGS. 16A-G  and  FIGS. 18A-G  it will be appreciated that the orientation of the enlarged cells/drop zone  262 A-D relative to the orientation of a hard clot  270 B determine which enlarged cell/drop zone  262 A,  262 B,  262 C, or  262 D, the hard clot  270  enters the distal body interior  222  through. For example, in  FIG. 16C , the hard clot  270 B is located above the distal body  216 , and thus, the hard clot  270 B must enter through the enlarged cell/drop zone located at the top of the distal body, which in the orientation of the distal body shown in  FIGS. 16A-G , is the enlarged cell/drop zone  262 C immediately distal to the top, distal, unattached, distal-pointing crown  258 C. In  FIG. 18C , the hard clot  270 B is again located above the distal body and, thus, the hard clot  270 B must enter through the enlarged cell/drop zone located at the top of the distal body. However, in  FIG. 18C , the enlarged cell/drop zone located at the top of the distal body  216 , in the orientation of the distal body  216  shown in  FIGS. 18A-G , is the enlarged cell/drop zone  262 A immediately distal to the top, proximal, unattached, distal-pointing crown  258 A. 
       FIGS. 19A-N  illustrate stepwise use of the distal body  216  in retrieving a deformable cohesive, adherent clot  270 C—i.e., a clot that is difficult to break up and is tightly adhered to the vessel wall  268 —in a human intracranial artery  266 . (In  FIGS. 19A-N , the distal body  216  is in Orientation  2 ). First, as always, the surgeon determines the location of the clot  270 C in the vessel  266  using, for example, a contrast dye injected proximal and distal to the clot  270 C. Next, the delivery catheter  208 , which is enveloping the distal body  216 , is positioned in the blood vessel  266  so that the two proximal, unattached distal-pointing crowns  258 A and  258 B are immediately distal to the clot  270 C. See  FIG. 19B . The distal body  216  is then deployed from the catheter  208  by moving the catheter  208  proximally. The deformable, cohesive adherent clot  270 C, which is located above the distal body  216 , collapses the distal body  216 , as shown in  FIG. 19C . However, at this time, the surgeon is unaware that the clot  270 C has collapsed the distal body  216 . Thus, without moving the distal body  216 , the surgeon irradiates the x-ray markers at a first vantage point (i.e., from the front of the distal body; i.e., into the page). As shown in  FIG. 19D , the first vantage point shows four rows of x-ray markers. The first row is, as always, a single point, representing the x-ray marker located in the proximal tube  228 ,  244 . The second row has a single point, corresponding to the top (in Orientation  2 ) and bottom (in Orientation  2 ), proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244 , which have converged because the clot  270 C is collapsing the distal body  216 . The third row has a single point, which represents the x-ray marker located at the front (in Orientation  2 ), distal, unattached distal-pointing crown  258 C,  244 ; the x-ray marker located at the rear, distal, unattached distal-pointing crown  258 D,  244  is hidden from view. The fourth row is, as always, a single point, representing the x-ray marker located in the distal tube  236 ,  244 . Without moving the distal body  216 , the surgeon then irradiates the markers from a second vantage point 90 degrees offset from the first vantage point (i.e., from the bottom of the distal body). As shown, the first row is, as always, a single point, which represents the x-ray marker located in the proximal tube  228 ,  244 . The second row has a single point, which corresponds to the bottom (in Orientation  2 ), proximal, unattached distal-pointing crown  258 B,  244 ; the top (in Orientation  2 ), proximal, unattached distal-pointing crown  258 A,  244  is located behind the bottom, proximal, unattached distal-pointing crown  258 B,  244  and hidden from view. The third row has two points, which correspond to the front (in Orientation  2 )  258 C,  244  and rear  258 D,  244  (in Orientation  2 ), distal, unattached distal-pointing crowns, neither of which is blocked in this view. The fourth row is, as always, a single point, which represents the x-ray marker located in the distal tube  236 ,  244 . As shown in  FIG. 19E , the surgeon then moves the distal body  216  proximally (i.e., slightly withdraws the distal body  216 ). The surgeon then irradiates the x-markers again from the first and second vantage points. As shown in  FIG. 19F , the results are exactly the same as in  FIG. 19D . Based on the observation that the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244  have converged at both the original position ( FIGS. 19C and 19D  in which the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244  are immediately distal to the clot  270 C) and the second position ( FIGS. 19E and 19F ), the surgeon concludes that the clot  270 C is a deformable cohesive, adherent clot  270 C. The surgeon then oscillates the distal body  216  proximally and distally a small distance (e.g., about 1 mm to about 2 mm) in the vessel  266 , and the clot  270 C begins to enter the distal body  216 , as shown in  FIG. 19G . The surgeon then irradiates the x-markers again from the first and second vantage points. As shown in  FIG. 19H , the results are exactly the same as in  FIG. 19D  and  FIG. 19F  except that the second row of markers  258 A,  244  and  258 B,  244  (at the proximal, unattached distal-pointing crowns) are beginning to move apart. The surgeon then moves the distal body  216  proximally again, as shown in  FIG. 19I . The surgeon then irradiates the x-markers again from the first and second vantage points. As shown in  FIG. 19J , the results are exactly the same as in  FIGS. 19D and 19F , as the clot  270 C has caused the second row of markers  258 A,  244  and  258 B,  244  to re-converge. The surgeon then oscillates the distal body  216  proximally and distally a small distance (e.g., about 1 mm to about 2 mm) in the vessel  266 , and the clot  270 C begins to further enter the distal body interior  222 , as shown in  FIG. 19K . The surgeon then irradiates the x-markers again from the first and second vantage points. As shown in  FIG. 19L , the results are the same as in  FIG. 19H . The surgeon then moves the distal body  216  again proximally, and, instead of collapsing the second row of markers  258 A,  244  and  258 B,  244 , the clot  270 C fully enters the distal body interior  222 , as shown in  FIG. 19M . The surgeon then irradiates the x-markers again from the first and second vantage points. As shown in  FIG. 19N , the results show that the second row of markers  258 A,  244  and  258 B,  244  (at the proximal, unattached distal-pointing crowns) have moved apart. Satisfied that the x-ray markers in the second row  258 A,  244  and  258 B,  244  (at the proximal, unattached distal-pointing crowns) are sufficiently far apart and that the x-ray markers in the third row (at the distal, unattached distal-pointing crowns)  258 C,  244  and  258 D,  244  have stayed far apart, the surgeon concludes that the deformable cohesive, adherent clot  270 C has been sufficiently captured by the distal body  216  and the surgeon then removes the distal body  216  and the clot  270 C, captured by the distal body  216 , by moving the distal body  216  proximally out of the vessel  266 . 
     Several observations can be made from  FIGS. 15-19 , as indicated above. For example, the x-ray markers at the proximal and distal, unattached distal-pointing crowns  258 A-D,  244  provide the surgeon feedback concerning the interaction between the distal body  216  and the clot  270  in the blood vessel  266 . In addition, the guiding principle of a soft clot  270 A is that the soft clot  270 A does not collapse the distal body  216 , and thus, x-ray markers at the proximal and distal, unattached distal-pointing crowns  258 A-D,  244  always appear as two points except when a marker is hidden behind another marker (due to the view). When it comes to a hard clot  270 B, the hard clot  270 B is generally able to enter the distal body interior  222  without needing to oscillate the distal body  216  proximally and distally (unlike a deformable cohesive, adherent clot  270 C). However, to capture the hard clot  270 B, the hard clot  270 B must be oriented properly relative to the enlarged cell/drop zones  262 A,  262 B,  262 C, or  262 D. (This is the reason that the distal body  216  has four enlarged cells/drop zones: one enlarged cells/drop zone at 0 degrees  262 B, one enlarged cells/drop zone at 90 degrees  262 C, one enlarged cells/drop zone at 180 degrees  262 A and one enlarged cells/drop zone at 270 degrees  262 D). As a guiding principle, an enlarged cell/drop zone  262 A,  262 B,  262 C, or  262 D is properly oriented to the clot  270 B when the x-ray markers at the proximal, unattached distal-pointing crowns  258 A,  244  and  258 B,  244  or the distal, unattached distal pointing crowns  258 C,  244  and  258 D,  244  are together at both a first x-ray view and a second x-ray view 90 degrees relative to the first x-ray view, and the hard clot  270 B can enter the enlarged cell/drop zone  262 A,  262 B,  262 C, or  262 D by moving the distal body  216  proximally. See  FIGS. 16F and 18D . Finally, the guiding principal of retrieval of deformable cohesive, adherent clots  270 C is that oscillation of the distal body  216  causes the deformable cohesive, adherent clots  270 C to gradually enter the distal basket interior  222  over time. 
       FIGS. 20A, 20B and 20C  show a distal body  216  that is similar to the distal body  216  of  FIGS. 14A, 14B and 14C  except that the distal body  216  of  FIGS. 20A, 20B and 20C  is slightly shorter and its unattached, distal-pointing crowns  258 A,  258 B,  258 C, and  258 D are closer to the proximal tube  228 . The shortened distal body  216  of  FIGS. 20A, 20B and 20C  is particularly adapted for tortuous blood vessels  266 .  FIG. 21-29  show stepwise deployment of the distal body  216  of  FIGS. 20A, 20B and 20C  in use with a manual (i.e., hand-operated), volume-dependent (i.e. volume locked) suction catheter  272  that is locked at between about 10 to about 60 cubic centimeters (cc). Optionally, the suction catheter  272  has an outer diameter of between about 0.05 inches and about 0.09 inches and its outer diameter is substantially larger than the outer diameter of the delivery catheter  208 . The clot  270  is located in the vessel  266  through the use of, for example, contrast dye injected proximal and distal to the clot  270 . As shown in  FIG. 21 , a delivery catheter  208  containing the distal body  216  of  FIGS. 20A, 20B and 20C  is positioned in the tortuous vessel  266  distal to the clot  270 . The delivery catheter  208  is withdrawn, deploying the distal body  216 . See  FIG. 22 . The distal body  216  is moved proximally relative to the clot  270  and tension is exerted on pull wire  202 . See  FIG. 23 . While maintaining tension on the pull wire  202 , a suction catheter  272  having a proximal end  274  and a distal end  276  is delivered over the pull wire  202  that is attached to the distal body  216 . See  FIG. 24 . (The reason for exerting tension on the pull wire  202  is that the pull wire  202  serves as the guide/track for the movement of the suction catheter  272  and without tension, the suction catheter  272  and pull wire  202  could end up in the ophthalmic artery  288 ). The distal end  276  of the suction catheter  272  is positioned against the clot  270 . A syringe  278  is attached to the suction catheter  272  using a rotating hemostatic valve  290 , which allows the surgeon to aspirate while a pull wire  202  is in the system. The surgeon aspirates the syringe  278  by pulling back on the lever  280  to a mark on the base  282  corresponding to between about 10 and about 60 cubic centimeters of fluid. The surgeon then locks the lever  280  (and attached plunger) into place, leaving the suction catheter  272  under suction. The surgeon captures the clot  270  in the distal body  216  using the techniques described in  FIGS. 15-19 . The distal body  216  and clot  270  become captured by the suction catheter  272 . See  FIGS. 27 and 28 . The surgeon then removes the suction catheter  272  and the distal body  216  and the clot  270 , captured by the suction catheter  272 , by moving the suction catheter  272  proximally out of the vessel  266 . See  FIG. 29 . It is believed that the suction catheter  272  would be helpful in the event that a small portion of the clot  270  breaks off when retrieving the clot  270  using the distal body  216 . 
     To examine effectiveness of the systems  200 , the systems  200  of  FIGS. 11-20 , without the use of a suction catheter  272 , were used to retrieve soft and hard clots  270 A and  270 B induced in a pig weighing between 30 to 50 kg. The weight of the pig was chosen so that the size of its vessels  266  would be approximate to the size of a human vessel. The pig was anesthetized. Several hard clots  270 B were prepared by mixing pig blood and barium and incubating the mixture for 2 hours. Several soft clots  270 A were prepared by mixing pig blood, thrombin and barium and incubating the mixture for 1 hour. The clots  270 A and  270 B, each of which had a width of 4 to 6 mm and a length of 10 to 40 mm, were then inserted into a vessel  266  having a diameter of 2 to 4 mm. (Only one clot  270 A and  270 B was located in the vessel  266  at a time). Angiograms were then performed to confirm occlusion. After waiting ten minutes after confirming occlusion, the distal bodies  216  of  FIGS. 11-20  were then delivered distal to the clots  270 A and  270 B as described above and were used to retrieve the clots  270 A and  270 B as described in  FIGS. 11-19 . In each case, the distal bodies  216  were successful in retrieving the clots  270 A and  270 B. As shown, the distal body height in the relaxed state tapers/decreases as the proximal strips  252  approach the proximal hub/junction/tube  228  and also tapers/decreases as the basket strips  291  located at the distal end  220  of the basket  246  converge at the distal hub/junction/tube  236 . 
     The Alternate Embodiment of  FIG. 65   
       FIG. 65  shows a distal body  216  in which the proximal strips proximal ends  254  converge and are soldered or welded at the proximal hub/junction  228  and the basket strips  291  located at the distal end  220  of the basket  246  converge and are soldered or welded at the distal hub/junction  236 . To create such an embodiment, the distal body  216  may be prepared from a single tube, as described above, and the proximal and distal tubes may be clipped and the proximal ends  254  of the proximal strips  252  soldered or welded together (and optionally to the pull wire  202 ) and the basket strips  291  located at the distal end  220  of the basket  246  may also be welded or soldered or welded together. Optionally, the proximal and distal hubs/junctions  228  and  236  may include x-ray markers  244  as described above. 
     The Embodiments of  FIGS. 30-35   
       FIGS. 30-35  illustrate additional embodiments of object retrieval system. Optionally, the system  300  of  FIGS. 30-35  includes: 
     a pull wire  308  having a proximal end  310 , a distal end  312  and a pull wire longitudinal axis  314  extending from the proximal end  310  to the distal end  312 ; 
     a coaxial sheath/tube  316  having a hollow interior, an open proximal end  318  leading to the hollow interior, and an open distal end  320  leading to the hollow interior, the coaxial sheath  316  enveloping the pull wire  308 , the coaxial sheath  316  slideable along at least a segment of the pull wire  308 ; 
     a distal basket  322  comprising an interior  324 , a proximal end  326 , a distal end  328 , a distal basket length  330  extending from the distal basket proximal end  326  to the distal basket distal end  328 , a distal basket height  332  perpendicular to the distal basket length  330 , a plurality of proximal cells  336  defined by a plurality of proximal cell memory metal strips  338 , each proximal cell  336  comprising a proximal crown  340  located at the proximal end of the proximal cell  336  and pointing generally in the proximal direction and a distal crown  342  located at the distal end of the proximal cell  336  and pointing generally in the distal direction, and a plurality of distal cells  350  distal to the proximal cells  336 ; 
     a plurality of proximal strips  352 , each proximal strip  352  having a proximal end  354  extending from the coaxial sheath distal end  320 , a distal end  356  attached to a proximal crown  340  of a proximal cell  336  and a length  358  extending from the proximal end  354  to the distal end  356 ; and 
     a delivery catheter  360 , as described above, and having a hollow interior  366 , a proximal end  362  leading to the interior  366  and a distal end  364  leading to the interior  366 , the delivery catheter  360  comprised of a biocompatible material. 
     Optionally, the distal basket  322  is comprised of a memory metal and has: 
     a relaxed state in which the distal end  320  of the coaxial sheath  316  is located a first distance proximal to the proximal crowns  336  and wherein the distal basket  322 , as measured at the proximal-most crown  336 , has a first height, 
     a proximal collapsed state in which the distal end  320  of the coaxial sheath  316  is located a second distance proximal to the proximal crowns  336  and wherein the distal basket  322 , as measured at the proximal-most crown  336 , has a second height, the second distance greater than the first distance, the second height less than the first height, and 
     a distal collapsed state in which the distal end  320  of the coaxial sheath  316  is located distal to the proximal crowns  336  and in the basket interior  324  and wherein the distal basket  322 , as measured at the proximal-most crown  336 , has a third height, the third height less than the first height, 
     wherein the delivery catheter  366  is configured to envelope the distal basket  322  when the distal basket  322  is in the proximal collapsed state; 
     wherein the distal basket  322  is configured to move from the relaxed state to the proximal collapsed state by moving the distal end  320  of the coaxial sheath  316  proximally relative to the proximal crowns  336 ; and 
     wherein the distal basket  322  is configured to move from the relaxed state to the distal collapsed state by moving the distal end  320  of the coaxial sheath  316  distally beyond the proximal crowns  336  and into the distal basket interior  324 . 
     Optionally, each proximal crown  340  comprises a proximal tip  344  and further wherein each proximal strip  352  is configured to cover a proximal tip  344  when the distal basket  322  is in the distal collapsed state. See  FIG. 35C , where the proximal strip  352  is folding back on itself to cover the proximal tip  344 . Optionally, each proximal crown  340  comprises an eyelet  370  and further wherein each proximal strip  352  passes through an eyelet  370 . Optionally, the distal end  356  of each proximal strip  352  comprises a loop  372  attaching the proximal strip  352  to an eyelet  370 . Optionally, each proximal crown  340  has an interior surface  348  facing the distal basket interior  324  and an exterior surface  350  opposite the interior surface  348  and further wherein each proximal strip  352  contacts an exterior surface  350  of a proximal crown  340  in the proximal collapsed state and the distal collapsed states, as best seen in  FIGS. 35A-C . Without being bound to any particular theory, it is believed that threading the proximal strips  352  through the eyelets  370  as shown in  FIGS. 35A-35C , helps protect the proximal crowns  340  (in particular, the proximal tips  344  of the proximal crowns  340 ) from damaging the vessel wall  306  when the proximal crowns  340  move towards each other and the pull wire  308  when the distal basket  322  moves to the distal collapsed state and the proximal collapsed state. Optionally, the pull wire  308  extends through the distal basket interior  324  and further wherein the proximal crowns  340  are configured to move towards each other and towards the pull wire  308  when the distal basket  322  moves from the gaping state to the distal collapsed state. Optionally, the proximal crowns  340  are configured to remain a fixed distance from the distal end  328  of the distal basket  322  when the distal basket  322  moves from the relaxed state to the distal collapsed state. In other words, preferably, the distal basket length  330  does not change when the distal basket  322  moves from the distal basket relaxed state to the distal basket. Optionally, the coaxial sheath  316  is a braided catheter comprised of a plurality of braids and further wherein the proximal segments of the braids are wound/woven together to form the braided catheter and further wherein an unwound/unwoven distal segment of each braid forms a proximal strip  352 , as shown in  FIG. 34 . Optionally, at least one component of the system  300  (e.g., the proximal crown  340  or the distal tube  334 ) comprises an x-ray marker  374  that is more visible under x-ray as compared to the other components when the distal basket  322  is located in a cranial blood vessel  304  inside the body of a human and the x-ray is taken from outside the human&#39;s body. Preferably, the x-ray marker  374  is a radiopaque material. Some examples of radiopaque materials can include, but are not limited to, gold, platinum, palladium, tantalum, tungsten alloy, polymer material loaded with radiopaque filler, and the like. Preferably, the non x-ray marker components are comprised of nitinol and the x-ray marker  374  is comprised of a material having a density greater than the nitinol. In some embodiments, as shown in  FIGS. 30A, 30B, 31A, 31B, 32A -F, the proximal ends  354  of the proximal strips  352  are integral with the coaxial sheath  316 . In other embodiments, as shown in  FIG. 33 , the proximal ends  354  of the proximal strips  352  are attached to the coaxial sheath  316 . Optionally, the system  300  comprises between two and four proximal strips  352  and the proximal strips  352  are spaced substantially evenly apart (e.g., if there are two proximal strips  252 , the strips are located about 180 degrees relative to each other, as shown in  FIG. 30D ; if there are three proximal strips  252 , the strips are located about 120 degrees relative to each other, as shown in  FIG. 30C ; and if there are four proximal strips  252 , the strips are located about 120 degrees relative to each other, as shown in  FIG. 30E ). Optionally, the proximal strips  352  have a length  358  of from about 5 mm to about 40 mm in the relaxed state. Optionally, the pull wire  308  extends through the basket interior  324  from the distal basket proximal end  326  to the distal basket distal end  328 . Optionally, the coaxial sheath interior has a size and shape, and further wherein the size and shape of the coaxial sheath interior are configured to prevent a segment  376  of the pull wire  308  located in the basket interior  322  and distal relative to the distal end  320  of the coaxial sheath  316  from moving through the coaxial sheath interior. In other words, optionally the pull wire  308  has a stop  376  that consists of a knot or other enlargement. Optionally, the distal end  328  of the distal basket  322  comprises a distal tube  334  having an open proximal end and an open distal end, the distal tube  334  comprised of a memory metal. Optionally, the distal tube  334  is attached to the pull wire  308  so that the distal tube  334  is not slideable along the pull wire  308 . This allows the entire distal basket  322  to be fixed to (i.e., not slideable along) the pull wire  308 . Optionally, wherein all proximal crowns  340  of the proximal cells  336  are attached to a proximal strip  352 , which is designed to minimize damage to the vessel wall  306 . Optionally, the distal basket  322  further comprises a lead wire  378  extending distally from the distal basket  322 . Optionally, the proximal strips  352  and the distal basket  322  have a different material composition. In other words, whereas the proximal strips  352  are designed to be soft, preferably, the distal basket  322  is comprised of a memory metal such as nitinol. Optionally, the proximal strips  352  are comprised of a polymer, which as used herein includes a co-polymer. Optionally, the polymer is selected from the group consisting of fluorinated ethylene propylene, polytetrafluoroethylene, and tetrafluoroethtylene. Optionally, the proximal strips  352  are comprised of a material selected from the group consisting of plastic, rubber, nylon, suture material, and braided catheter material. 
     Optionally, as illustrated in  FIGS. 32A-32F , the system  300  is used in method of removing a clot  302  from a blood vessel  304  of an animal, the blood vessel  304  having an interior wall  306  forming the blood vessel  304 , the method comprising the steps of: 
     a) providing the system  300 , wherein the coaxial sheath  316  is located in the catheter interior  366  and the distal basket  322  is located in the catheter interior  366  in a collapsed state; 
     b) positioning the catheter  360  in the blood vessel  304  (see  FIG. 32A ); 
     c) deploying the distal basket  322  from the distal end  364  of the catheter  360  so that the proximal crowns  340  of the proximal cells  336  are distal to the clot  302 ; 
     d) allowing the distal basket  322  to move to the relaxed state (see  FIG. 32B ; the coaxial sheath  316  is in the first position along the pull wire  308 ); 
     e) moving the distal end  320  of the coaxial sheath  316  distally along the pull wire  308  to the fourth position (see  FIG. 32C ; note that the proximal crowns  340  have remained in the same location and that the distal basket height  332 , as measured at the proximal-most crown  340 , has not decreased yet; preferably, an x-ray marker  374  on the pull wire  308  allows the surgeon to locate the fourth position); 
     f) moving the distal basket  322  and the coaxial sheath  316  proximally and capturing the clot  302  in the distal basket interior  324  (see  FIG. 32D ); 
     g) moving the coaxial sheath  316  further distally along the pull wire (i.e., at or near the third position; preferably, an x-ray marker  374  on the pull wire  308  allows the surgeon to locate the third position) so that the distal basket height  332 , as measured at the proximal-most crown  340 , decreases and the proximal crowns  340  move toward each other and towards the pull wire  308  (see  FIGS. 32D and 32E ; it will be appreciated that the proximal crowns  340  collapse like a claw in  FIGS. 31B, 32D and 32E  due to tension exerted on the crowns  340  by the proximal strips  352 , similar to the mechanism described in  FIGS. 3-10 ); and 
     h) moving the system  300  proximally out of the blood vessel  304 . 
     The coaxial sheath  316  optionally has a length of at least 50 centimeters (cm), e.g., about 50 cm to about 300 cm, so that the coaxial sheath  316  can be moved by the surgeon outside of the patient&#39;s body. The coaxial sheath  316  can be formed of several parts that are fused together to form the coaxial sheath  316 . The coaxial sheath  316  is preferably sufficiently flexible so that it can bend around the carotid siphon and reach the blood vessel with the clot—i.e., the coaxial sheath  316  is configured to bend when placed in the carotid siphon so that the coaxial sheath  316  can pass through the carotid siphon and reach blood vessels distal to the carotid siphon. 
     The Embodiments of  FIGS. 36-44   
       FIGS. 36-44  further illustrate other embodiments of a modular, easy-to-manufacture platform of systems for retrieving hard clots and other objects in animal lumens. In some embodiments, the system includes a proximal tube, a distal tube, and a plurality of memory metal strips between the proximal and distal tubes. The plurality of memory metal strips form a wide range of basket designs. Preferably, the proximal tube, memory metal strips, and distal tube are derived from a standard, off-the-shelf single tube of memory metal (e.g., nitinol), with the proximal tube and distal tube having the same inner diameter and outer diameter as the native tube from which they were derived and with the basket formed by cutting the middle portion of the native tube and expanding and shape-setting this cut portion. Preferably, the proximal tube and distal tube have an outer diameter that is from about 0.02 inches to about 0.03 inches (e.g., about 0.027 inches) so that the device fits inside a standard microcatheter and an inner diameter that is from about 0.01 inches to about 0.02 inches. Preferably, there are no welded or soldered parts between the proximal tube and distal tube, which makes the system easy and cheap to reliably manufacture. The system also includes one or more catheters for deploying the system, and a first wire that is attached to the proximal tube and a second wire that is attached to the distal tube. Preferably, the system includes two catheters—a guide catheter and a microcatheter. The plurality of memory metal strips attached to the proximal hub/junction include a plurality of proximal tether memory metal strips, which have a proximal end attached to the distal end of the proximal tube. 
     The present disclosure also provides a system for removing objects within an interior lumen of an animal. In some embodiments, the system includes 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a distal basket attached to said pull wire, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a proximal tube located at said proximal end of the distal basket, said proximal tube comprising a hollow interior, a plurality of proximal tether memory metal strips, a row of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction, each proximal tether memory metal strip having a proximal end attached to said proximal tube, a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, a row of distal crowns located distal to said proximal cells pointing in the distal direction, and further wherein the number of distal crowns in said row is twice the number of proximal crowns attached to said proximal tether memory metal strips, and a distal tube located at said distal end of said distal basket, said distal basket having 
     a relaxed state wherein said distal basket has a first height and 
     a collapsed state wherein said distal basket has a second height, said second height less than said first height, and 
     a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal body when said distal basket is in said collapsed state. 
     Optionally, said proximal tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a proximal tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. Optionally, said proximal tether memory metal strips and said proximal cell memory metal strips each have a thickness and further wherein said thickness of said proximal tether memory metal strips is between about 100 to about 175 percent of the thickness of the proximal cell memory metal strips. Optionally, the length of said proximal tether memory metal strips is about 10 mm to about 20 mm in the relaxed state (and the length of the remainder of the basket is about 10 to about 20 mm in the relaxed state so that the total basket length is between about 20 to about 40 mm in the relaxed state). Optionally, said distal end of said pull wire is attached to said proximal tube. Some or all of the proximal crowns of said proximal cells may be attached to a proximal tether memory metal strip. Optionally, said distal basket further comprises a row of strut memory metal strips, each strut memory metal strip having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four proximal tether memory metal strips. Optionally, said proximal tether memory metal strips are integral with said proximal tube. Optionally, said distal body further comprises a lead wire extending distally from said distal tube. Optionally, said distal tube, said proximal tube, and said basket are comprised of a nitinol having the same material composition. Optionally, said distal body further comprises an x-ray marker. Optionally, said proximal and said distal tubes are generally cylindrical in shape and each has an outer diameter and an inner diameter, the inner diameter forming the apertures of the proximal and distal tubes and further wherein the outer diameters of the proximal and distal tubes are substantially the same size and further wherein the inner diameters of the proximal and distal tubes are substantially the same size. Optionally, the outer diameters of the proximal and distal tubes are from about 0.011 inches to about 0.054 inches, and further wherein the inner diameters of the proximal and distal tubes are from about 0.008 inches to about 0.051 inches. Optionally, the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height is between about 2 millimeters and about 8 millimeters. 
     The present disclosure also provides a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen, the method comprising the steps of: 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in said collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said distal basket over said obstruction; and 
     f) removing said distal basket and said obstruction from said lumen. 
     Optionally, said interior lumen is an intracranial artery and said obstruction is a blood clot. 
     In further embodiments, the system includes: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a proximal basket attached to said pull wire, said proximal basket comprising an interior, an exterior, a proximal end, a distal end, a proximal basket length extending from said proximal basket proximal end to said distal end, a proximal basket height perpendicular to said proximal basket length and said pull wire longitudinal axis, a proximal tube located at said proximal end of the proximal basket, said proximal tube comprising a hollow interior, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction,
 
a distal basket attached to said pull wire, said distal basket comprising an interior, an exterior, a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a distal tube located at said distal end of the distal basket, said distal tube comprising a distal tube aperture, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction,
 
a plurality of tether memory metal strips, each tether memory metal strip having a proximal end attached to a distal crown of a cell located at the distal end of said proximal basket and a distal end attached to a proximal crown of a cell located at the proximal end of said distal basket,
 
said proximal basket having
 
a relaxed state wherein said proximal basket has a first height and
 
a collapsed state wherein said proximal basket has a second height, said second height less than said first height and said second width less than said first width,
 
said distal basket having
 
a relaxed state wherein said distal basket has a first height and a first width and
 
a collapsed state wherein said distal basket has a second height and a second width, said second height less than said first height, and
 
a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal and said proximal basket when said baskets are in said collapsed state.
 
     Optionally, said tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. 
     More particularly, with reference to  FIGS. 36-44  the present disclosure provides a deployable system, generally designated by the numeral  410 , for removing an obstruction such as a blood clot  417  or other object from a blood vessel  488  or other interior lumen of an animal. In addition to a blood clot  417 , the obstruction may be, for example, extruded coils during aneurysm treatment, intravascular embolic material such as onyx or other obstructions requiring mechanical intravascular removal from small distal vessels. In the drawings, not all reference numbers are included in each drawing for the sake of clarity. 
     One example of a deployable basket system  410  is shown in  FIGS. 37A-37B, 38A -E and  39 A. As shown in  FIGS. 31A-31E, 32G-32H and 35A , the system  410  includes a pull wire  443  having a proximal end  445 , a distal end  444  and a pull wire longitudinal axis  446  extending from said proximal end  445  to said distal end  444 . Optionally, the diameter of the pull wire  443  is between about 0.008 inches and about 0.051 inches. 
     The system  410  further includes a distal basket  411  attached to said pull wire  443 , said distal basket  411  comprising a proximal end  469 , a distal end  465 , a distal basket length  467  extending from said distal basket proximal end  469  to said distal end  465 , a distal basket height  461  perpendicular to said distal basket length  467  and said pull wire longitudinal axis  446 , a proximal hub/junction  439  located at said proximal end  469  of the distal basket  411  and comprising a hollow interior  441 , said distal end  444  of said pull wire  443  attached to said proximal hub/junction  439 , a plurality of proximal tether memory metal strips  457 , a plurality of proximal cells  436  defined by a plurality of proximal cell memory metal strips  466 , each proximal cell  436  comprising a proximal crown  438  located at the proximal end of the proximal cell  436  and pointing generally in the proximal direction and a distal crown  424  located at the distal end of the proximal cell  436  and pointing generally in the distal direction, each proximal tether memory metal strip  457  having a proximal end  455  attached to said proximal hub/junction  439  (preferably said proximal hub/junction distal end  440 ), a distal end  453  attached to a crown of a proximal cell  438  and a length  455  extending from said proximal end  455  to said distal end  453 , a plurality of distal cells  422  distal to the proximal cells  436 , and a distal hub/junction  425  located at said distal end  465  of said distal basket, comprising a hollow interior  427  and attached to a proximal end of a leader wire  431 . Preferably, the proximal hub/junction  439  and distal hub/junction  425  are hollow tubes formed from the same tube of memory metal, as described below. In some embodiments, the basket  411  includes a first row of two crowns (i.e., the proximal crowns  438  of the proximal cells  436 ) and then subsequent repeating rows of twice as many crowns as compared to the number of proximal crowns  438  (i.e., four crowns) along the basket length  467 . 
     The system further includes a guide catheter  430  and a microcatheter  432 , which is wider and shorter than the guide catheter  430 , so that the microcatheter  432  can fit inside the guide catheter  430 . The microcatheter  432  has a hollow interior  415 , a proximal end  416  leading to said interior  415  and a distal end  414  leading to said interior  415 . The microcatheter  432  is comprised of a biocompatible material. For purposes of  FIGS. 36-44 , the terms “guide catheter”, “microcatheter” and “catheter” generally refers to any suitable tube through which the system  410  can be deployed. Preferably, the catheters are sterile and comprised of a biocompatible material (i.e., a material that does not irritate the human body during the course of a 45 minute operation that involves using the system  410  to remove a clot  417  from an intracranial blood vessel  488 ). The catheter can be any suitable shape, including but not limited to generally cylindrical. For purposes of the present invention, when it is said that the catheter envelopes the system  410 , it will be understood that the catheter envelopes at least one component of the system  410  (preferably, the distal basket  411 , the lead wire  431 , which is a wire that extends distally from the pull wire  443 , and the pull wire  443 ). In some embodiments, the microcatheter  32  is about 2.5 French in diameter. Optionally, the catheter is delivered to the region of the lumen that has the obstruction  417  as follows: a guide wire is delivered to the obstruction region past the obstruction  417 ; the catheter is delivered over the guide wire; the guide wire is removed; and the system  410  is delivered with its pull wire  443  and lead wire  431  through the catheter. Optionally, the pull wire  443  is used to push the system  410  through the catheter as well as to retrieve the distal basket  411  after capturing the obstruction  417  as described below. The system  410  may utilize a plurality of catheters as described above, such as, for example, a wider catheter that travels to the brain and a very flexible, smaller diameter microcatheter that is delivered from the first catheter and travels through the small arteries of the brain. 
       FIG. 37A  shows the distal basket  411  collapsed inside a microcatheter  432 . The distal basket  411  is in what&#39;s referred to as the collapsed state. In this state, the system  410  is able to be located inside the microcatheter  432  and the basket height  461  is collapsed. For purposes of  FIGS. 36-44 , the basket height  461  generally refers to the height at a particular location (e.g., at the proximal-most crown  438  of the distal basket  411  or the distal-most crown  500  of the proximal basket  433 ), it being understood that the height of the distal basket  411  and proximal basket  433  may vary along the distal basket length  467  and the length of the proximal basket  433 . 
     As shown in  FIGS. 36-44 , the distance  463  between the proximal hub/junction  439  and distal hub/junction  425  (i.e., the basket length  467 ) is generally longer in the collapsed state, as compared to the relaxed state. 
       FIG. 37B  shows the same basket system as  FIG. 37A , except that the basket  411  has been deployed from the distal end  414  of the microcatheter  432  by pulling the microcatheter  432  proximally. As shown in  FIG. 37B , the basket  411  is now in a relaxed state and the basket height  461  has increased. In the relaxed state exemplified, the basket length  467  and the distance  463  between the proximal and distal hubs/junctions  439  and  425  has decreased slightly as the basket  411  has relaxed. Optionally, the length of said proximal basket  467  is between about 20 and about 40 mm and the length  454  of said proximal tether memory metal strips  457  are between about 10 and about 20 mm in the relaxed state. 
       FIG. 38  illustrates use of the basket system shown in  FIG. 37  in an intracranial artery  488 . As shown in  FIG. 38A , first the guide catheter  430  is deployed proximal to the clot  417 . The microcatheter  432  is then advanced distally beyond the clot  417 . The basket  411  is collapsed inside the microcatheter  432 . Next, as shown in  FIG. 38B , the microcatheter  432  is moved proximally to deploy the basket  411  so that the proximal tether memory metal strips  457  are distal to the clot  417 . The basket  411  is now in the relaxed state. Next, as shown in  FIG. 38C , the user moves the basket  411  proximally over the clot  417 . 
       FIG. 39A  shows a close-up view of the proximal end of the basket  411 , including the proximal tube interior  441 , the attachment of the proximal tether memory metal strips  457  at the distal end  455  of the proximal hub/junction  439 , and the proximal crowns  438  of the proximal cells  436 . In  FIG. 39A , all proximal crowns  438  of the proximal cells  436  are attached to a proximal tether memory metal strip  457 .  FIG. 39B  illustrates an alternative embodiment in which two proximal crowns  438   a  of a proximal cell  436  (the top and bottom crowns  438   a ) are attached to a proximal tether memory metal strip  457  and one proximal crown  438   b  of a proximal cell  436  is not attached to a proximal tether memory metal strip  457 . 
       FIG. 40  illustrates a similar to basket system  410  to the above systems. In  FIG. 40 , the proximal tether memory metal strips  457  are relatively thick (e.g., about 150% of the thickness of the proximal cell memory metal strips  466 ). 
     It will be noted that the proximal end of the system  410  is shown at the bottom end of  FIGS. 36-44  and the distal end of the system  410  is shown at the top end of  FIGS. 36-44  because a principal use of the system  410  is to remove a blood clot  417  from a human intracranial artery  488 , in which case the system  410  generally will enter the artery  488  at its proximal end by the surgeon entering the patient&#39;s body near the groin and pushing the catheter  432  towards the brain. The diameter of human arteries  488  generally decrease from their proximal end to their distal end. However, when used in other types of lumens, the distal basket  411  may be located proximally relative to the catheter  432  as the term proximally and distally are used in that lumen. 
       FIG. 41  illustrates another embodiment of a basket system  411  with a proximal basket  433  and a distal basket  411 . In this embodiment, the system  411  includes a proximal hub/junction  439  (similar to the prior embodiments). The difference is that the tether memory metal strips  457  actually join the proximal basket  433  and the distal basket  411 . More particularly, the proximal basket  433  is comprised of a plurality of proximal cells  436  attached to the proximal hub/junction  439  and a plurality of distal cells  422  and the distal basket is comprised of a plurality of proximal cells  436  attached to the proximal hub/junction  439  (preferably to the proximal end  499  of the distal hub/junction  425 ) and a plurality of distal cells  422  and the tether memory metal strips  457  join a distal crown  423  of a distal cell  422  of the distal basket  411  with a proximal crown  438  of a proximal cell  436  of the proximal basket  433 . 
       FIG. 42  illustrate an embodiment of the tether memory metal strips  457  rotating about said pull wire longitudinal axis  446  such that the distal end  453  of a proximal tether memory metal strip  457  is located between about 90 and about 270 degrees relative to said proximal end  455  of the same proximal tether memory metal strip  457 . In addition, the proximal tether memory metal strips  457  may rotate around their longitudinal axis  454  such that a distal end  453  of a proximal tether memory metal strip  457  rotates about 90 degrees around this tether longitudinal axis  454  from the distal end  453  to the proximal end  455  of the same proximal memory metal strip  457 .  FIGS. 43B and 43C  illustrates an exemplary embodiment, where the proximal end  455 A of the first proximal tether memory metal strip  457 A is located attached to the proximal tube  439  at the 12 o&#39;clock position and the distal end  453 A of the same proximal tether memory metal strip  457 A is attached to a proximal-most crown  439  at the 9 o&#39;clock position. In addition, the second proximal tether memory metal strip  457 B is located attached to the proximal tube  439  at the 6 o&#39;clock position and the distal end  453 B of the same proximal tether memory metal strip  457 B is attached to the other proximal-most crown  439  at the 3 o&#39;clock position.  FIGS. 43D and 43E  illustrate an exemplary embodiment of 180 degree rotation, where the proximal end  455 A of the first proximal tether memory metal strip  457 A is located attached to the proximal tube  439  at the 12 o&#39;clock position and the distal end  453 A of the same proximal tether memory metal strip  457 A is attached to a proximal-most crown  439  at the 6 o&#39;clock position. In addition, the second proximal tether memory metal strip  457 B is located attached to the proximal tube  439  at the 6 o&#39;clock position and the distal end  453 B of the same proximal tether memory metal strip  457   b  is attached to the other proximal-most crown  439  at the 12 o&#39;clock position. 
       FIGS. 44A-44E  illustrate a side, perspective view of stepwise deployment and use of a basket system  410  with a proximal basket  433  and a distal basket  411  in a blood vessel to retrieve a clot  417 . As shown, the distal basket  411  is deployed proximal to said clot  417  and said proximal basket  433  is deployed at said clot  417  so that said proximal basket  433  is at level of the clot. After allowing some time for clot debris to penetrate the proximal basket  433 , the basket system  433  is moved proximally toward said microcatheter  432 . See  FIGS. 44B and 44C . As shown in  FIG. 44D , the clot  417  falls moves medially into the void or space  498  between the proximal basket  433  and distal basket  411 . The system  410  continues to move proximally. The clot  477  is then located inside the distal basket  411 . See  FIG. 44E . The proximal basket  433  optionally has a length in the relaxed state of preferably from about 10 to about 20 mm, as measured from the proximal-most crown to the distal-most crown. 
     The proximal basket  433  is used to deploy the system  411  across the obstruction  417  and is the initial site where the clot  417  enters through the struts  452 . As the basket system  411  is pulled/dragged proximally, the site of the proximal tether memory metal strip  457  gives a relative “open” area  498  for the clot  417  to fall into in the lumen of the vessel  488 . The distal basket  411  captures the clot  417  that has entered into the system  410  either through the basket cell openings or at the level of proximal tether memory metal strips  457  and prevents embolization into distal vessels  480 . Preferably, the proximal basket  433  has two distal crowns  500  at the distal end of the proximal basket  433  that are attached to the proximal end  455  of the proximal tether memory metal strips  457  and then one or more rows of proximal cells  501 , with four cells in each row. 
     In some embodiments, the basket system  410  is prepared by a process that includes one or more of the following steps, as illustrated in  FIG. 36 : 
     a) providing a single tube  468  comprised of a memory metal such as nitinol, the single tube  468  having an exterior, a substantially hollow interior, a wall  482  separating the exterior from the substantially hollow interior, an open proximal end  474 , an open distal end  476 , a middle portion  478  between the open proximal end  474  and the open distal end  476  (see  FIG. 36A );
 
b) cutting the wall of the middle portion  478  with a laser  480  (see  FIG. 36B );
 
c) removing the pieces of the middle portion cut by the laser  480  to form a basket system  410  comprising a proximal tube  439  comprising a hollow interior  441  extending through said proximal tube  439 , said proximal tube having a proximal end  442  and a distal end  440 , a distal tube  425  comprising a hollow interior  441  extending through said distal tube  425 , and a middle portion  478  located between said proximal tube  439  and said distal tube  425  and comprising a plurality of proximal tether memory metal strips  457 , each proximal tether memory metal strip  457  having a proximal end  455  attached to the distal end  440  of the proximal tube  439  and a distal end  453 ;
 
d) altering the shape of the middle portion  478  using a mandrel and allowing the middle portion  478  to expand relative to the distal tube  476  and proximal tube  474  to form a distal basket  411  that includes a plurality of cells  422  and  436 ;
 
e) quenching the middle portion  478  at room temperature;
 
f) removing the mandrel from the middle portion  478 ;
 
g) mechanically or chemically electropolishing the middle portion  478  to remove oxides (see  FIG. 36C );
 
h) inserting a pull wire  443  to said proximal tube  439 ; and
 
i) attaching a leader wire  431  to said distal hub/junction  425  (see  FIG. 36D ).
 
     In some embodiments, the middle portion  478  is expanded by heating the mandrel and the middle portion  478  by, for example, placing the mandrel and the middle portion  478  in a fluidized sand bath at about 500° C. for about 3 to about 7 minutes. As the middle portion  478  is heated, the heating causes the crystalline structure of the memory metal tube  468  to realign. Preferably, the mandrel is tapered (e.g., substantially conical or bullet in shape) so that the portion of the distal basket  411  formed from the middle portion  478  tapers from the proximal-most crown  438  to the distal end  466 . Preferably, the proximal and distal ends of the tube  474  and  476  are not shape set by the mandrel and are not cut by the laser  480  so that the proximal and distal ends  474  and  476  do not change in shape and only slightly expand in size under heating and return to the size of the native tube  468  after the heat is removed. Preferably, the laser cuts are programmed via a computer. To ensure that the laser cuts only one surface of the tube wall at the time (and not the surface directly opposite the desired cutting surface), the laser  480  is preferably focused between the inner and outer diameter of the desired cutting surface and a coolant is passed through the memory metal tube  468  so that the laser  480  cools before reaching the surface directly opposite the desired cutting surface. 
     The portions of the wall not cut by the laser  480  create the proximal and distal tubes  474  and  476  as well as the other components of the distal basket  411 , and memory metal strips  457  and  466 , as described. 
     Preferably, the memory metal selected for the native tube  468  has a heat of transformation below average human body temperature (37° C.) so that the distal basket  411  has sufficient spring and flexibility after deployment from the catheter  432  in the human blood vessel  88 . 
     In some embodiments, the native tube  468  (and hence the distal and proximal tubes  474  and  476 ) have an outer diameter of less than about 4 French, e.g., a diameter of about 1 to about 4 French. In some embodiments, the diameter of the pull wire  443  is between about 0.008 inches and about 0.051, as noted above, and in such embodiments, the diameter of the pull wire  443  may be approximately equal to the inner diameter  472  of the native nitinol tube  468 . 
     Without being bound by any particular theory, it is believed that manufacturing the distal basket  411  from a single memory metal tube  468  provides ease of manufacturing and safety from mechanical failure and provides tensile strength necessary for the system  410  to remove hard thrombus  417  and other obstructions. 
     Optionally, after step e, the basket  411  further comprises a row  448  of proximal cells  436 , each proximal cell  436  defined by a plurality of memory metal strips  466  and comprising a proximal crown  438  located at a proximal end of the cell  436  and pointing in the proximal direction and a distal crown  424  located at a distal end of the cell and pointing in the distal direction and further wherein each of said proximal crowns  438  of said proximal cells  436  is attached to a distal end  453  of a proximal tether memory metal strip  457 . Optionally, after step e, the basket  410  further comprises a row  447  of distal cells  422  located distal to said proximal cells  436  and connected to said distal crowns  424  of said proximal cells  436 , each distal cell  422  defined by a plurality of memory metal strips  466  and comprising a proximal crown  437  located at a proximal end of the cell  422  and pointing in the proximal direction and a distal crown  423  located at a distal end of the cell  422  and pointing in the distal direction, and further wherein the number of distal cells  422  is twice the number of proximal cells  436 . Optionally, after step e, the basket system  410  further comprises a row  449  of strut memory metal strips  452 , each strut memory metal strip  452  having a proximal end  451  attached to a distal crown  424  of a proximal cell  436  and a distal end  450  attached to a proximal crown  437  of a distal cell  422 . Optionally, the basket  411  comprises no welded or soldered components and said proximal tether memory metal strips  457  are integral with said proximal cell crowns  438 . 
     Optionally, after step e, the basket system  411  comprises between two and four proximal tether memory metal strips  457 . Optionally, prior to cutting the memory metal tube  468 , the memory metal tub  468  has an outer diameter  486  that is from about 0.011 inches to about 0.054 inches and an inner diameter  484  that is from about 0.008 inches to about 0.051 inches. Optionally, after step e), the proximal tube  439  and distal tube  425  have an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the method further includes placing said basket  411  inside a catheter  432  comprised of a biocompatible material. Optionally, the method further includes the steps of placing the basket  411  inside a lumen  488  of an animal and using the basket to retrieve an object  417  located inside said lumen  488 . 
     The Embodiments of  FIGS. 45-62   
       FIGS. 45-62  illustrate additional embodiments of a modular, easy-to-manufacture platform of systems for retrieving hard clots and other objects in animal lumens. In some embodiments, the system includes a proximal tube, a distal tube, and a plurality of memory metal strips between the proximal and distal tubes. The plurality of memory metal strips form a wide range of basket designs. Preferably, the proximal tube, memory metal strips, and distal tube are derived from a standard, off-the-shelf single tube of memory metal (e.g., nitinol), with the proximal tube and distal tube having the same inner diameter and outer diameter as the native tube from which they were derived and with the basket formed by cutting the middle portion of the native tube and expanding and shape-setting this cut portion. Preferably, the proximal tube and distal tube have an outer diameter that is from about 0.02 inches to about 0.03 inches (e.g., about 0.027 inches) so that the device fits inside a standard microcatheter and an inner diameter that is from about 0.01 inches to about 0.02 inches. Preferably, there are no welded or soldered parts between the proximal tube and distal tube, which makes the system easy and cheap to reliably manufacture. The system also includes one or more catheters for deploying the system, a pull wire that passes through the hollow interior of the proximal tube, and a coaxial tube. Preferably, the system includes two catheters—a guide catheter and a microcatheter. The coaxial tube envelopes the pull wire, is slideable along at least a segment of the pull wire, and is attached to the proximal hub/junction. The coaxial tube allows a user to move the proximal hub/junction toward and away from the distal hub/junction while keeping the distal hub/junction stationary. Movement of the proximal hub/junction toward and away from the distal hub/junction causes conformational changes in the basket, including (depending on the basket design and the location of the proximal tube), collapsing the basket, expanding the basket, strengthening the basket, and moving the basket around the clot. The plurality of memory metal strips attached to the proximal hub/junction include a plurality of proximal tether memory metal strips, which have a proximal end attached to the distal end of the proximal tube. The length and thickness of the proximal tether memory metal strips vary in the different embodiments described herein, which allows the surgical user to select from the various embodiments in the platform based on the features needed for the particular operation (e.g., vessel anatomy and hardness of the clot). 
     In some embodiments, the disclosure provides a system for removing objects within an interior lumen of an animal that includes 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a distal basket attached to said pull wire, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a proximal hub/junction located at said proximal end of the distal basket, said proximal hub/junction comprising a hollow interior, said pull wire passing through said proximal hub/junction hollow interior, said proximal hub/junction slideable along at least a segment of the pull wire, a plurality of proximal tether memory metal strips, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, each proximal tether memory metal strip having a proximal end attached to said proximal hub/junction, a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, a plurality of distal cells distal to the proximal cells, and a distal hub/junction located at said distal end of said distal basket and comprising a hollow interior, 
     said distal basket having 
     a relaxed state in which said proximal hub/junction is located a first distance proximal to said proximal crowns and wherein said distal basket has a first height, as measured at the proximal-most crown, 
     a gaping state in which said proximal hub/junction is located a second distance from said proximal crowns and wherein has a second height, as measured at the proximal-most crown, said second height greater than said first height, said second distance less than said first distance, a proximal collapsed state in which said proximal hub/junction is located a third distance proximal to said proximal crowns and wherein said distal basket has a third height and a third width, as measured at the proximal-most crown, said third distance greater than said first distance, said third height less than said first height, 
     a catheter having a hollow interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal basket when said distal basket is in said proximal collapsed state; wherein said distal basket is configured to move from said relaxed state to said gaping state by moving said proximal hub/junction distally relative to said distal hub/junction; and 
     wherein said distal basket is configured to move from said expanded state to said proximal collapsed state by moving said proximal hub/junction proximally relative to said distal hub/junction. 
     Optionally, the distal basket further comprises a distal collapsed state in which said proximal hub/junction is located distal to said proximal crowns and wherein said distal basket has a fourth height, as measured at the proximal-most crown, said fourth height less than said first height, wherein said catheter is configured to envelope said distal basket when said distal basket is in said distal collapsed state, and further wherein said distal basket is configured to move from said gaping state to said distal collapsed state by moving said proximal hub/junction distally relative to said distal hub/junction. Optionally, the system further includes a coaxial tube, said coaxial tube configured to be received in said catheter, said coaxial tube having a proximal end, a distal end attached to said proximal hub/junction, and a hollow interior, said pull wire passing through said coaxial tube hollow interior, said coaxial tube slideable along at least a segment of said pull wire. In some embodiments, said proximal tether memory metal strips and said proximal cell memory metal strips each have a thickness and further wherein said thickness of said proximal tether memory metal strips is between about 25 to about 75 percent of the thickness of the proximal cell memory metal strips. In such embodiments, the length of the proximal tether memory metal strips is between about 3 mm to about 10 mm in the relaxed state. In some embodiments with thin proximal tether memory metal strips, the combined length of two of said proximal tether memory metal strips is within about 2 mm of said second height. In other embodiments with thin proximal tether memory metal strips, the combined length of two of said proximal tether memory metal strips is within about 2 mm of said second height multiplied by a factor of two. 
     In other embodiments, the proximal tether memory metal strips are as thick or thicker than the memory metal strips forming the proximal cells and in such embodiments, the length of the proximal tether memory metal strips may be between about 10 mm and about 20 mm in the relaxed state. 
     Optionally, said pull wire extends from said distal basket proximal end to said distal basket distal end. Optionally, said pull wire is not in contact with said distal hub/junction. Optionally, in said gaping state, said proximal hub/junction is located parallel to said proximal crown. Optionally, said pull wire and said proximal hub/junction are offset from the center of the distal basket height, as measured at the proximal-most crown. Optionally, all proximal crowns of said proximal cells are attached to a proximal tether memory metal strip. Optionally, said distal basket further comprises a plurality of strut memory metal strips and plurality of distal cells defined by a plurality of distal memory metal strips, said distal cells comprising a proximal crown located at a proximal end of said distal cells and a distal crown located at a distal end of said distal cells, said strut memory metal strips having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four proximal tether memory metal strips. Optionally, said proximal memory metal strips are integral with said proximal hub/junction. Optionally, said proximal hub/junction is a tube, wherein said interior of said proximal hub/junction has a size and shape, and further wherein said size and shape of said proximal hub/junction interior are configured to prevent a segment of said pull wire distal relative to said proximal hub/junction from moving through proximal hub/junction interior. Optionally, said distal hub/junction is a tube. Optionally, said distal hub/junction is attached to said pull wire such that said distal hub/junction is not slideable along said pull wire. Optionally, said distal basket further comprises a lead wire extending distally from said distal hub/junction. Optionally, said distal hub/junction, said proximal hub/junction, and said basket are comprised of a nitinol having the same material composition. Optionally, said distal basket further comprises an x-ray marker that is more visible under x-ray as compared to the other components when the distal basket is located in a cranial blood vessel inside the body of a human and the x-ray is taken from outside the human&#39;s body. Preferably, the x-ray marker is a radiopaque material. Some examples of radiopaque materials can include, but are not limited to, gold, platinum, palladium, tantalum, tungsten alloy, polymer material loaded with radiopaque filler, and the like. Preferably, the components are comprised of nitinol and the x-ray marker is comprised of a material having a density greater than the nitinol. Optionally, said proximal and said distal hubs/junctions are generally cylindrical in shape and each has an outer diameter and an inner diameter, the inner diameter forming apertures of the proximal and distal hubs/junctions and further wherein the outer diameters of the proximal and distal hubs/junctions are substantially the same size and further wherein the inner diameters of the proximal and distal hubs/junctions are substantially the same size. Optionally, the outer diameters of the proximal and distal hubs/junctions are from about 0.011 inches to about 0.054 inches, and further wherein the inner diameters of the proximal and distal hubs/junctions are from about 0.008 inches to about 0.051 inches. Optionally, the proximal tube and distal tube have an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height is between about 2 millimeters and about 8 millimeters. Optionally, said proximal tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a proximal tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. 
     The present disclosure also provides a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen. In some embodiments, the method includes: 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said proximal hub/junction distally relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, increase; 
     f) moving said distal basket over said obstruction; and 
     g) removing said distal basket and said obstruction from said lumen. 
     Optionally, the interior lumen is an intracranial artery and said obstruction is a blood clot. Optionally, the method further comprises using said blood clot to move said proximal hub/junction distally relative to said distal hub/junction and allow said distal basket to move to said gaping state. Optionally, the method further comprises using a coaxial tube to push said proximal hub/junction distally relative to said distal hub/junction and allow said distal basket to move to said gaping state. Optionally, the method further includes, after step e, moving said proximal hub/junction relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, decrease. Optionally, after step e, said pull wire and said proximal hub/junction are offset with respect to the center of said distal basket height, as measured at the proximal-most crown, as measured at the proximal-most crown, and the center of said lumen. 
     The present disclosure also provides a system for removing objects within an interior lumen of an animal, the system comprising: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a proximal basket attached to said pull wire, said proximal basket comprising a proximal end, a distal end, a proximal basket length extending from said proximal basket proximal end to said distal end, a proximal basket height perpendicular to said proximal basket length and said pull wire longitudinal axis, a proximal tube located at said proximal end of the proximal basket, said proximal tube comprising a hollow interior, said pull wire passing through said hollow interior and said proximal tube slideable along at least a segment of said pull wire, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, 
     a distal basket attached to said pull wire, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a distal tube located at said distal end of the distal basket, said distal tube comprising a hollow interior, a plurality of rows of cells, each cell defined by a plurality of memory metal strips, each cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, 
     a plurality of tether memory metal strips, each tether memory metal strip having a proximal end attached to a distal crown of a cell located at the distal end of said proximal basket and a distal end attached to a proximal crown of a cell located at the proximal end of said distal basket, said proximal basket having 
     a relaxed state wherein said proximal basket has a first height as measured at the distal-most crown, and said proximal hub/junction is located a first distance proximal to said distal hub/junction; 
     a collapsed state wherein said proximal basket has a second height, as measured at the distal-most crown, said second height less than said first height; 
     a gaping state wherein said proximal basket has a third height, as measured at the distal-most crown, and said proximal hub/junction is located a second distance proximal to said distal hub/junction, said third height greater than said first height and said second distance less than said first distance, 
     said proximal basket configured to move from said expanded state to said gaping state by pushing said proximal tube distally relative to said distal tube; 
     said distal basket having 
     a relaxed state wherein said distal basket has a first height and 
     a collapsed state wherein said distal basket has a second height, said second height less than said first height, and 
     a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal and said proximal basket when said baskets are in said collapsed state. 
     Optionally, said proximal tether memory metal strips rotate about said pull wire longitudinal axis such that a distal end of a proximal tether memory metal strip is located between about 90 and about 270 degrees relative to said proximal end of the same proximal tether memory metal strip. 
     In some embodiments, the system does not include a proximal hub/junction and the system includes soft cords in place of or in addition to the proximal memory metal strips. For example, in one embodiment, the system includes: 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a coaxial tube having a proximal end, a distal end and a hollow interior, said pull wire passing through said coaxial tube hollow interior, said coaxial tube slideable along at least a segment of said pull wire; 
     a distal basket attached to said pull wire and said coaxial tube, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a plurality of cords, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, each cord having a proximal end attached to said coaxial tube, a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, a plurality of distal cells distal to the proximal cells, and a distal hub/junction located at said distal end of said distal basket and comprising a hollow interior, 
     said distal basket having 
     a relaxed state in which said coaxial tube is located a first distance proximal to said proximal crowns and wherein said distal basket, as measured at the proximal-most crown, has a first height, 
     a proximal collapsed state in which said coaxial tube is located a second distance proximal to said proximal crowns and wherein said distal basket, as measured at the proximal-most crown, has a second height, said second distance greater than said first distance, said second height less than said first height, 
     a catheter having a hollow interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said coaxial tube and said distal basket when said distal basket is in said proximal collapsed state; 
     wherein said distal basket is configured to move from said relaxed state to said proximal collapsed state by moving said coaxial tube proximally relative to said distal hub/junction. 
     Optionally, the distal basket further comprises a distal collapsed state in which said coaxial tube is located distal to said proximal crowns and wherein said distal basket, as measured at the proximal-most crown, has a third height, said third height less than said first height, wherein said catheter is configured to envelope said distal basket when said distal basket is in said distal collapsed state, and further wherein said distal basket is configured to move from said relaxed state to said distal collapsed state by moving said coaxial tub distally relative to said distal hub/junction. Optionally said cord is comprised of a material selected from the group consisting of plastic, rubber, nylon, suture material, and braided catheter material. Optionally, said cords are integral with said coaxial sheath. Optionally, said cords are glued to said coaxial sheath. Optionally, said cords are shrink wrapped to said coaxial sheath. Optionally, said cords have a thickness of from about 0.001 to about 0.1 inches (more preferably about 0.004 to about 0.018 inches) and have a length of from about 3 mm to about 20 mm in said relaxed state. Optionally, said pull wire extends from said distal basket proximal end to said distal basket distal end and said pull wire is attached to said distal hub/junction. Optionally, all proximal crowns of said proximal cells are attached to a cord. Optionally, the basket comprises four proximal cells, each proximal cell having a proximal crown, and not all (e.g., only two) of the proximal crowns are attached to a cord. Optionally, said distal basket further comprises a plurality of strut memory metal strips and plurality of distal cells defined by a plurality of distal memory metal strips, said distal cells comprising a proximal crown located at a proximal end of said distal cells and a distal crown located at a distal end of said distal cells, said strut memory metal strips having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four cords. Optionally, said distal hub/junction is attached to said pull wire such that said distal hub/junction is not slideable along said pull wire. Optionally, said distal basket further comprises a lead wire extending distally from said distal hub/junction. Optionally, said distal hub/junction and said basket are comprised of a nitinol having the same material composition. Optionally, said distal basket and/or said coaxial tube further comprises an x-ray marker that is more visible under x-ray as compared to the other components when the distal basket is located in a cranial blood vessel inside the body of a human and the x-ray is taken from outside the human&#39;s body. Preferably, the x-ray marker is a radiopaque material. Some examples of radiopaque materials can include, but are not limited to, gold, platinum, palladium, tantalum, tungsten alloy, polymer material loaded with radiopaque filler, and the like. Preferably, the components are comprised of nitinol and the x-ray marker is comprised of a material having a density greater than the nitinol. Optionally, said distal hub/junction is generally cylindrical in shape and has an outer diameter and an inner diameter, the inner diameter forming the aperture of the distal hub/junction and further wherein the outer diameter of the distal hub/junction from about 0.011 inches to about 0.054 inches, and further wherein the inner diameter of the distal hub/junction is from about 0.008 inches to about 0.051 inches. Optionally, the distal tube has an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height of the distal basket, as measured at the proximal-most crown, is between about 2 millimeters and about 8 millimeters. Optionally, said cords are soft. 
     In some embodiments, the present disclosure provides a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen, the method comprising the steps of: 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said coaxial tube distally relative to said distal hub/junction so that said coaxial tube moves distally to the proximal-most crown; 
     f) moving said distal basket, said pull wire and said coaxial tube proximally so that said distal basket moves over said obstruction; 
     g) moving said coaxial sheath distally relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, decreases and said coaxial tube is closer to said distal hub/junction as compared to the proximal-most crown; and 
     i) removing said distal basket and said obstruction from said lumen. 
     In other embodiments, the method includes 
     a) providing the system described above; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said coaxial tube distally relative to said distal hub/junction so that said coaxial tube moves distally to the proximal-most crown; 
     f) moving said distal basket, said pull wire and said coaxial tube proximally so that said distal basket moves over said obstruction; 
     g) moving said coaxial sheath proximally relative to said distal hub/junction so that said distal basket height, as measured at the proximal-most crown, decreases; 
     h) moving said catheter distally relative to said distal hub/junction so that said catheter re-sheaths said coaxial sheath and partially re-sheaths said cords, thereby decreasing said distal basket height, as measured at the proximal-most crown; 
     i) removing said distal basket and said obstruction from said lumen. 
     Optionally, said interior lumen is an intracranial artery and said obstruction is a blood clot. 
     In other embodiments that do not include a proximal hub/junction, the system includes 
     a pull wire having a proximal end, a distal end and a pull wire longitudinal axis extending from said proximal end to said distal end; 
     a coaxial tube having a proximal end, a distal end and a hollow interior, said pull wire passing through said coaxial tube hollow interior, said coaxial tube slideable along at least a segment of said pull wire; 
     a distal basket attached to said pull wire and said coaxial tube, said distal basket comprising a proximal end, a distal end, a distal basket length extending from said distal basket proximal end to said distal end, a distal basket height perpendicular to said distal basket length and said pull wire longitudinal axis, a plurality of proximal tether memory metal strips, a plurality of cords, a plurality of proximal cells defined by a plurality of proximal cell memory metal strips, each proximal cell comprising a proximal crown located at the proximal end of the proximal cell and pointing generally in the proximal direction and a distal crown located at the distal end of the proximal cell and pointing generally in the distal direction, each proximal tether memory metal strip having a proximal end attached to said coaxial tube and a distal end, each cord having a proximal end attached to a distal end of a proximal tether memory metal strip and a distal end attached to a crown of a proximal cell and a length extending from said proximal end to said distal end, and a plurality of distal cells distal to the proximal cells, and a distal hub/junction located at said distal end of said distal basket and comprising a hollow interior, 
     said distal basket having 
     a relaxed state in which said distal basket, as measured at the proximal-most crown, has a first height, 
     a collapsed state in which said distal basket, as measured at the proximal-most crown, has a second height, said second height less than said first height, 
     a catheter having a hollow interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said coaxial tube and said distal basket when said distal basket is in said collapsed state. 
     Optionally, said cord is comprised of a material selected from the group consisting of plastic, rubber, nylon, suture material, and braided catheter material. Optionally, said proximal tether memory metal strips are integral with said coaxial sheath. Optionally, said cords are glued to said proximal tether memory metal strips. Optionally, said cords are shrink wrapped to said proximal tether memory metal strips. Optionally, said cords have a thickness of from about 0.004 to about 0.1 inches (more preferably about 0.004 inches to about 0.018 inches) and further wherein said cords have a length of from about 3 mm to about 20 mm in said relaxed state. Optionally, said pull wire extends from said distal basket proximal end to said distal basket distal end and said pull wire is attached to said distal hub/junction. Optionally, all proximal crowns of said proximal cells are attached to a cord. Optionally, the basket comprises four proximal cells, each proximal cell having a proximal crown, and not all (e.g., only two) of the proximal crowns are attached to a cord. Optionally, said distal basket further comprises a plurality of strut memory metal strips and plurality of distal cells defined by a plurality of distal memory metal strips, said distal cells comprising a proximal crown located at a proximal end of said distal cells and a distal crown located at a distal end of said distal cells, said strut memory metal strips having a proximal end attached to a distal crown of a proximal cell and a distal end attached to a proximal crown of a distal cell. Optionally, the distal basket comprises between two and four cords. Optionally, said distal hub/junction is attached to said pull wire such that said distal hub/junction is not slideable along said pull wire. Optionally, said distal basket further comprises a lead wire extending distally from said distal hub/junction. Optionally, said distal hub/junction and said basket are comprised of a nitinol having the same material composition. Optionally, said distal basket and/or said coaxial tube further comprises an x-ray marker that is more visible under x-ray as compared to the other components when the distal basket is located in a cranial blood vessel inside the body of a human and the x-ray is taken from outside the human&#39;s body. Preferably, the x-ray marker is a radiopaque material. Some examples of radiopaque materials can include, but are not limited to, gold, platinum, palladium, tantalum, tungsten alloy, polymer material loaded with radiopaque filler, and the like. Preferably, the components are comprised of nitinol and the x-ray marker is comprised of a material having a density greater than the nitinol. Optionally, said distal hub/junction is generally cylindrical in shape and has an outer diameter and an inner diameter, the inner diameter forming the aperture of the distal hub/junction and further wherein the outer diameter of the distal hub/junction from about 0.011 inches to about 0.054 inches, and further wherein the inner diameter of the distal hub/junction is from about 0.008 inches to about 0.051 inches. Optionally, the distal tube has an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally the pull wire is generally cylindrical and further wherein the diameter of the pull wire is between about 0.008 inches and about 0.051 inches. Optionally, the first height of the distal basket, as measured at the proximal-most crown, is between about 2 millimeters and about 8 millimeters. Optionally, the cords are soft. 
     In some embodiments, the above system is used in a method of removing an object from an interior lumen of an animal, said lumen having an interior wall forming said lumen that includes 
     a) providing the above system; 
     b) positioning the system in said lumen, said basket located in said catheter in a collapsed state; 
     c) deploying said distal basket from said distal end of said catheter so that said proximal crowns of said proximal cells are distal to said obstruction, said coaxial sheath is proximal to said obstruction, said proximal tether memory metal strips are proximal to said obstruction, and said cords are adjacent to said obstruction; 
     d) allowing said distal basket to move to said relaxed state; 
     e) moving said coaxial tube distally relative to said distal hub/junction so that said proximal tether memory metal strips move distally relative to the proximal-most crown and said obstruction is sandwiched between said proximal tether memory metal strips and said proximal crowns of said proximal cells; 
     f) removing said distal basket and said obstruction from said lumen. 
     Optionally said interior lumen is an intracranial artery and said obstruction is a blood clot. 
     With reference to  FIGS. 45-62  the present disclosure provides a deployable system, generally designated by the numeral  610 , for removing an obstruction such as a blood clot  617  or other object from a blood vessel  688  or other interior lumen of an animal. In addition to a blood clot  617 , the obstruction may be, for example, extruded coils during aneurysm treatment, intravascular embolic material such as onyx or other obstructions requiring mechanical intravascular removal from small distal vessels. In the drawings, not all reference numbers are included in each drawing for the sake of clarity. 
     One example of a deployable basket system  610  is shown in  FIGS. 46A-46E, 47G-47H and 50A . As shown in  FIGS. 46A-46E, 47G-47H and 50A , the system  610  includes a pull wire  643  having a proximal end  645 , a distal end  644  and a pull wire longitudinal axis  646  extending from said proximal end  645  to said distal end  644 . Optionally, the diameter of the pull wire  643  is between about 0.008 inches and about 0.051 inches. 
     The system  610  further includes a distal basket  611  attached to said pull wire  643 , said distal basket  611  comprising a proximal end  669 , a distal end  665 , a distal basket length  667  extending from said distal basket proximal end  669  to said distal end  665 , a distal basket height  661  perpendicular to said distal basket length  667  and said pull wire longitudinal axis  646 , a proximal hub/junction  639  located at said proximal end  669  of the distal basket  611 , said proximal hub/junction  639  comprising a hollow interior  641 , said pull wire  643  passing through said proximal hub/junction hollow interior  641 , said proximal hub/junction  639  slideable along at least a segment of the pull wire  643 , a plurality of proximal tether memory metal strips  657 , a plurality of proximal cells  636  defined by a plurality of proximal cell memory metal strips  666 , each proximal cell  636  comprising a proximal crown  638  located at the proximal end of the proximal cell  636  and pointing generally in the proximal direction and a distal crown  624  located at the distal end of the proximal cell  636  and pointing generally in the distal direction, each proximal tether memory metal strip  657  having a proximal end  655  attached to said proximal hub/junction  639 , a distal end  663  attached to a crown of a proximal cell  638  and a length  655  extending from said proximal end  655  to said distal end  653 , a plurality of distal cells  622  distal to the proximal cells  636 , and a distal hub/junction  625  located at said distal end  665  of said distal basket and comprising a hollow interior  627 . Preferably, the proximal hub/junction  639  and distal hub/junction  625  are hollow tubes formed from the same tube of memory metal, as described below. In some embodiments, the basket  611  includes a first row of two, three, or four crowns (i.e., the proximal crowns  638  of the proximal cells  638 ) and then subsequent repeating rows of twice as many crowns as compared to the number of proximal crowns  638  (i.e., four, six, or eight crowns) along the basket length  667 . 
     The system further includes a guide catheter  630  and a microcatheter  632 , which is wider and shorter than the guide catheter  630 , so that the microcatheter  632  can fit inside the guide catheter  630 . The microcatheter  632  has a hollow interior  615 , a proximal end  616  leading to said interior  615  and a distal end  614  leading to said interior  615 . The microcatheter  632  is comprised of a biocompatible material. As used herein, the terms “guide catheter”, “microcatheter” and “catheter” generally refers to any suitable tube through which the system  610  can be deployed. Preferably, the catheters are sterile and comprised of a biocompatible material (i.e., a material that does not irritate the human body during the course of a 45 minute operation that involves using the system  610  to remove a clot  617  from an intracranial blood vessel  688 ). The catheter can be any suitable shape, including but not limited to generally cylindrical. For purposes of the present invention, when it is said that the catheter envelopes the system  610 , it will be understood that the catheter envelopes at least one component of the system  610  (preferably, the distal basket  611 , the lead wire  631 , which is a wire that extends distally from the pull wire  643 , and the pull wire  643 ). In some embodiments, the microcatheter  632  is about 2.5 French in diameter. Optionally, the catheter is delivered to the region of the lumen that has the obstruction  617  as follows: a guide wire is delivered to the obstruction region past the obstruction  617 ; the catheter is delivered over the guide wire; the guide wire is removed; and the system  610  is delivered with its pull wire  643  and lead wire  631  through the catheter. Optionally, the pull wire  643  is used to push the system  610  through the catheter as well as to retrieve the distal basket  611  after capturing the obstruction  617  as described below. The system  610  may utilize a plurality of catheters as described above, such as, for example, a wider catheter that travels to the brain and a very flexible, smaller diameter microcatheter that is delivered from the first catheter and travels through the small arteries of the brain. 
     Preferably, a coaxial tube  618 , which has a hollow interior  620  and is slideable along at least a portion of the pull wire  643  is attached to the proximal hub/junction  639 . 
       FIG. 46A  shows the distal basket  611  collapsed inside a microcatheter  632 . The distal basket  611  is in what&#39;s referred to as the proximal collapsed state. In this state, the system  610  is able to be located inside the microcatheter  632  and the basket height  661  is collapsed. For purposes of the present invention, the basket height  661  generally refers to the height at a particular location (e.g., at the proximal-most crown  638  of the distal basket  611  or the distal-most crown  623  of the proximal basket  633 ), it being understood that the height of the distal basket  611  and proximal basket  633  may vary along the distal basket length  667  and the length of the proximal basket  633 . 
     In  FIG. 46A , the proximal hub/junction  639  is located a maximum distance from the distal hub/junction  625 . The distance from the proximal hub/junction  639  to the distal hub/junction  625  changes by exerting force on the proximal hub/junction  639 , as described herein, and the distance is shown in the drawings using the numeral  663 . This distance is also generally equal to the length of the basket  667 , as shown. 
       FIG. 46B  shows the same basket system as  FIG. 46A , except that the basket  611  has been deployed from the distal end  614  of the microcatheter  632  by pulling the microcatheter  632  proximally. As shown in  FIG. 46B , the basket  611  is now in a relaxed state and the basket height  661  has increased. In the relaxed state exemplified, the proximal tube  639  is located a short distance  629  proximal to the proximal-most crown  638 . In addition, the basket length  667  and the distance  663  between the proximal and distal hubs/junctions  639  and  625  has decreased as the basket  611  has relaxed. In addition, the user has moved the coaxial tube  618  proximally relative to the pull wire  643  as shown by the line in the lower part of  FIG. 46B , which indicates that the distance between the proximal stop  664  and the coaxial tube proximal end  621  has increased from  FIG. 46A  to  FIG. 46B . The present invention may utilize a variety of stops, such as a proximal stop  664 , which is any barrier that prevents the coaxial tube  618  from moving proximally beyond the proximal stop  664 . In some forms, the proximal stop  664  is merely an enlargement or x-ray marker  658  in the pull wire  643  that is taller and/or wider than the open coxial tube interior  620  (i.e., the inner diameter of the coaxial tube  618 ). Instead of stops or in addition to stops, the pull wire  643  may be etched to provide guidance to the surgeon on the distance to push and pull the coaxial tube  618 . 
       FIG. 46C  exemplifies what is referred to as the gaping state of the basket  611 . To move the basket  611  from the relaxed state to the gaping state, a user merely pushes the proximal hub/junction  639  distally towards the stationary distal hub/junction  625 . This causes the proximal tether memory metal strips  657  to increase the height  661  of the distal basket  611  at the proximal-most crown  638 . The proximal tether memory metal strips  657  of the embodiment shown in  FIGS. 46, 47 and 50  are relatively short. The proximal tether memory metal strips  657  are relatively thin compared to the memory metal strips  666  that make up the proximal cells  636 , which makes the proximal tether memory metal strips  657  easy to bend. Preferably, in the gaping state of short, relatively thin proximal tether memory metal strips  657 , the proximal memory metal strips  657  are substantially perpendicular (e.g., about 75 to about 105 degrees) relative to the longitudinal axis of the pull wire  646 . 
       FIG. 46D  exemplifies what is referred to as the distal collapsed state. To move the basket  611  from the gaping state to the distal collapsed state, a user merely pushes the proximal hub/junction  639  distally towards the stationary distal hub/junction  625 . This causes the proximal tether memory metal strips  657  to reduce the height  661  of the distal basket at the proximal-most crown  638 , which in certain embodiments, allows the user to recapture the system  610  in the microcatheter  632 . This is particularly helpful if the system  610  was deployed at the wrong location. Preferably, the pull wire  643  includes a distal stop  660 , which prevents the proximal hub/junction  39  from moving too far distally and breaking. 
       FIG. 46E  also exemplifies the proximal collapsed state. To move the basket  611  from the relaxed state to the proximal collapsed state, a user merely pulls the proximal hub/junction  639  away from the stationary distal hub/junction  625 . This causes the proximal tether memory metal strips  657  to reduce the height  661  of the distal basket at the proximal-most crown  638 , which in certain embodiments, allows the user to recapture the system  610  in the microcatheter  632 . This is particularly helpful if the system  610  was deployed at the wrong location. Preferably, the pull wire  643  includes a middle stop  655 , which prevents the proximal hub/junction  639  from moving too far proximally. 
       FIG. 47  illustrates use of the basket system shown in  FIG. 46  in an intracranial artery  688 . As shown in  FIG. 47A , first the guide catheter  630  is deployed proximal to the clot  617 . The microcather  632  is then advanced distally beyond the clot  617 . The basket  611  is collapsed inside the microcatheter  632 . Next, as shown in  FIG. 47B , the microcatheter  632  is moved proximally to deploy the basket  611  distal to the clot  617 . The basket  611  is now in the relaxed state. Next, as shown in  FIG. 47C , the user continues to move the microcatheter  632  proximally. Then, as shown in  FIG. 47D , the basket  611  is moved closer to the clot  617  by a user pulling the pull wire  643  and coaxial tube  618  proximally at the same time. Then, as shown in  FIG. 47E , the user uses the coaxial tube  618  to move the proximal hub/junction  639  toward the distal hub/junction  625  so that the basket  611  is in the gaping state. The gaping state is particularly important, as it believed to allow the basket  611  to capture the clot  617  without having the clot  617  collapse the basket  611 . Then, as shown in  FIG. 47F , the basket  611  is moved proximally over the clot  617 . Then, as shown in  FIG. 47G , the coaxial tube  618  is moved further proximally to close the proximal end  669  around the clot  617 . The system  611  is moved proximally by moving the pull wire  643  and the coaxial tube  618  proximally simultaneously. 
       FIG. 50A  shows a close-up view of the proximal end of the basket  611 , including the proximal tube interior  641 , the attachment of the proximal tether memory metal strips  657  at the distal end  655  of the proximal hub/junction  639 , and the proximal crowns  638  of the proximal cells  636 . In  FIG. 50A , all proximal crowns  638  of the proximal cells  636  are attached to a proximal tether memory metal strip  657 .  FIG. 50B  illustrates an alternative embodiment in which two proximal crowns  638   a  of a proximal cell  636  (the top and bottom crowns  638   a ) are attached to a proximal tether memory metal strip  657  and one proximal crown  638   b  of a proximal cell  636  is not attached to a proximal tether memory metal strip  657 .  FIGS. 50C-50E  illustrate that the basket system may include, for example, between 2 and 4 proximal tether memory metal strips  657 . 
       FIG. 56  illustrates a side, perspective view of a basket system  610  with relatively thick and short proximal tether memory metal strips  657  (i.e., the proximal tether memory metal strips  657  are slightly thicker than the memory metal strips  666  making up the proximal cells  636 . 
     In,  FIG. 57  the proximal tether memory metal strips  657  are thicker than the memory metal strips  666  forming the proximal cells  636  of the distal basket  611 . In these embodiments with thicker proximal tether memory metal strips  657 , the proximal tether memory metal strips  657  resist deforming when the proximal hub/junction  635  is translated distally toward the stationary distal hub/junction  629  and instead the proximal tether memory metal strips  657  are bowed out laterally, dissecting through or around the clot  617  and centering, buttressing and strengthening the opening of the basket  611 . In particular, as illustrated in  FIG. 57A , the basket  611  is deployed distal to the clot  617 . The basket  611  is move distally so that the clot  617  partially collapses the proximal tether memory metal strips  657 . See  FIG. 57B . The proximal hub/junction  614 C is moved distally to slice the proximal tether memory metal strips  657  through the clot  617 . See  FIG. 57C . The basket  611  is moved proximally to ensare the clot  617 . See  FIG. 57 . The tether proximal memory metal strips  657  are partially withdrawn into the microcatheter  632  and the system is removed from the body. See  FIG. 57E . 
       FIG. 51  illustrates a similar to basket system  610  to  FIGS. 46, 47 and 50 . In  FIG. 51 , the proximal tether memory metal strips  657  are relatively thin and short and the proximal memory metal strips making up the remainder of the basket are thickest at the proximal-most crown  38  and decrease gradually along the distal basket length  667 . 
       FIG. 52  illustrates a similar to basket system  610  to  FIGS. 46, 47, 50, and 51 . Again, the proximal tether memory metal strips  657  are relatively thin and short. In this embodiment, the length  654 A of the first proximal memory metal strip  657 A and the length  654 B of the second proximal memory metal strip  657 B are equal to the height  661  of the basket  611  in the relaxed state, as measured at the proximal-most crown  638 , plus or minus two mm. Thus, if for example, the height of the vessel  688  is 4 mm and the length of the proximal tether memory metal strips is 3 mm, the height  661  of the basket  611  as measured at the proximal-most crown  638  could be 4 mm. This is believed to allow the basket  611  in the gaping state to fill the vessel  688 . 
       FIG. 48  illustrates another embodiment of the basket system  610 . In this embodiment, the pull wire  643  does not extend through the entire basket  611  but rather ends at distal stop  660 . As compared to the embodiment of  FIGS. 46, 47 and 50 , the proximal tether memory metal strips  657  of the embodiment of  FIG. 48  are about the same thickness as the thickness  656  of the proximal cell memory metal strips  666 , which makes the basket  611  relatively rigid and the proximal tether memory metal strips  657  relatively inflexible, which may be desired for certain applications. As shown, moving the basket  611  from the relaxed state (see  FIG. 48A ) to the gaping state by moving the coaxial tube  618  proximally does not greatly enhance the basket height  661  in this embodiment due to the rigidity. 
       FIGS. 49A-49C  illustrate stepwise deployment and use of a basket system  610  with three relatively thin and short proximal tether memory metal strips  657 ; the system  610  is deployed in a blood vessel  688  to retrieve a clot  617 . 
       FIG. 53  illustrates another embodiment of the basket system  610 . In this embodiment, the proximal tether memory metal strips  657  are relatively thin (like the embodiment of  FIGS. 46, 47 and 50 ) but longer than the  FIGS. 46, 47, and 50  prior embodiment. This length allows the basket  611  to open asymmetrically around the clot  617  (see  FIG. 53C ), which is helpful if the microcatheter  632  and pull wire  643  are pushed against the vessel  688  wall by the clot  617 . As shown in  FIG. 53B , the length  654 A of the first proximal tether memory metal strip  657 A also may be two times the height  661  of the basket  611 , as measured at the proximal-most crown  638  plus or minus 2 mm and the length  654 B of the second proximal tether memory metal strip  657 B may be two times the height  661  of the basket  611  plus or minus 2 mm. Thus, for example, if the vessel  688  has a height of 4 mm and the length  654 A and  654 B of the proximal tether memory metal strips  657 A and  657 B are 7 mm each, the height  661  of the distal basket  611  as measured at the proximal-most crown may be set to for example 4 mm in the relaxed state. 
     It will be noted that the proximal end of the system  610  is shown at the bottom end of  FIGS. 45-62  and the distal end of the system  610  is shown at the top end of  FIGS. 45-62  because a principal use of the system  610  is to remove a blood clot  617  from a human intracranial artery  688 , in which case the system  610  generally will enter the artery  688  at its proximal end by the surgeon entering the patient&#39;s body near the groin and pushing the catheter  632  towards the brain. The diameter of human arteries  688  generally decrease from their proximal end to their distal end. However, when used in other types of lumens, the distal basket  611  may be located proximally relative to the catheter  632  as the term proximally and distally are used in that lumen. 
       FIG. 54  illustrates another embodiment of a basket system  611 . In this embodiment, the system  611  includes a proximal hub/junction  639  that is slideable towards a distal hub/junction  625  (similar to the prior embodiments). The difference is that the tether memory metal strips  657  actually join the proximal basket  633  and the distal basket  611 . More particularly, the proximal basket  633  is comprised of a plurality of proximal cells  636  attached to the proximal hub/junction  639  and a plurality of distal cells  622  and the distal basket is comprised of a plurality of proximal cells  636  attached to the proximal hub/junction  639  and a plurality of distal cells  622  and the tether memory metal strips  657  join a distal crown  623  of a distal cell  622  of the distal basket  611  with a proximal crown  638  of a proximal cell  636  of the proximal basket  633 . As shown, in  FIG. 54B , movement of the proximal hub/junction  639  toward the distal hub/junction  625  increases the height  634  of the proximal basket  633  as measured at the distal-most crown  623  of the distal basket  611 . 
       FIGS. 55  A and  55 B illustrate an embodiment of the proximal tether memory metal strips  657  rotating about said pull wire longitudinal axis  646  such that the distal end  653  of a proximal tether memory metal strip  657  is located between about 90 and about 270 degrees relative to said proximal end  655  of the same proximal tether memory metal strip  657 . In addition, the proximal tether memory metal strips  657  may rotate around their longitudinal axis  654  such that a distal end  653  of a proximal tether memory metal strip  657  rotates about 90 and about 270 degrees around this tether longitudinal axis  654  from the distal end  653  to the proximal end  655  of the same proximal memory metal strip  657 .  FIG. 55C  illustrates an exemplary embodiment, where the proximal end  655 A of the first proximal tether memory metal strip  657 A is located attached to the proximal tube  639  at the 12 o&#39;clock position and the distal end  653 A of the same proximal tether memory metal strip  657 A is attached to a proximal-most crown  639  at the 9 o&#39;clock position. In addition, the second proximal tether memory metal strip  657 B is located attached to the proximal tube  639  at the 6 o&#39;clock position and the distal end  653 B of the same proximal tether memory metal strip  657   b  is attached to the other proximal-most crown  639  at the 3 o&#39;clock position.  FIGS. 55D and 55E  illustrate a similar embodiment with the proximal tether memory metal strips  657 A and  657 B rotating 180 degrees.  FIG. 55D  illustrates an exemplary embodiment, where the proximal end  655 A of the first proximal tether memory metal strip  657 A is located attached to the proximal tube  639  at the 12 o&#39;clock position and the distal end  653 A of the same proximal tether memory metal strip  657 A is attached to a proximal-most crown  639  at the 6 o&#39;clock position. In addition, the second proximal tether memory metal strip  657 B is located attached to the proximal tube  639  at the 6 o&#39;clock position and the distal end  653 B of the same proximal tether memory metal strip  657   b  is attached to the other proximal-most crown  639  at the 12 o&#39;clock position. 
     In some embodiments, the basket system  610  is prepared by a process that includes one or more of the following steps, as illustrated in  FIG. 45 : 
     a) providing a single tube  668  comprised of a memory metal such as nitinol, the single tube  668  having an exterior, a substantially hollow interior, a wall  682  separating the exterior from the substantially hollow interior, an open proximal end  674 , an open distal end  676 , a middle portion  678  between the open proximal end  674  and the open distal end  676  (see  FIG. 45A ); 
     b) cutting the wall of the middle portion  678  with a laser  680  (see  FIG. 45B ); 
     c) removing the pieces of the middle portion cut by the laser  680  to form a basket system  610  comprising a proximal tube  639  comprising a hollow interior  641  extending through said proximal tube  639 , said proximal tube having a proximal end  642  and a distal end  640 , a distal tube  625  comprising a hollow interior  641  extending through said distal tube  625 , and a middle portion  678  located between said proximal tube  639  and said distal tube  625  and comprising a plurality of proximal tether memory metal strips  657 , each proximal tether memory metal strip  657  having a proximal end  655  attached to the distal end  640  of the proximal tube  639  and a distal end  653 ; 
     d) altering the shape of the middle portion  678  using a mandrel and allowing the middle portion  678  to expand relative to the distal tube  676  and proximal tube  674  to form a basket that includes cells  623  and  636 ; 
     e) quenching the middle portion  678  at room temperature; 
     f) removing the mandrel from the middle portion  678 ; 
     g) mechanically or chemically electropolishing the middle portion  678  to remove oxides (see  FIG. 45C ); 
     h) inserting a pull wire  643  through said proximal tube interior  641  so that said proximal tube  639  is slideable along at least a portion of said pull wire  643 , said pull wire  643  having a proximal end  645  and a distal end  644 ; and 
     i) attaching said pull wire  643  to said distal tube  625  so that the distal tube  625  is not slideable along the pull wire  643  but instead the distal tube  625  moves with the pull wire  643  (see  FIG. 45D ). 
     In other embodiments, steps h) and i) above replaced with the steps of inserting a pull wire comprising a proximal end, a distal end, a stop located adjacent to said distal end, through said proximal tube interior, said stop having a width and/or height that is greater than said proximal tube interior, said stop located distal relative to said proximal tube interior, so that said proximal tube is slideable distally until the proximal hub/junction reaches said stop, said pull wire not contacting said distal tube; and attaching a leader wire to said distal tube. 
     In some embodiments, the middle portion  678  is expanded by heating the mandrel and the middle portion  678  by, for example, placing the mandrel and the middle portion  678  in a fluidized sand bath at about 500° C. for about 3 to about 7 minutes. As the middle portion  678  is heated, the heating causes the crystalline structure of the memory metal tube  668  to realign. Preferably, the mandrel is tapered (e.g., substantially conical or bullet in shape) so that the portion of the distal basket  611  formed from the middle portion  678  tapers from the proximal-most crown  638  to the distal end  666 . Preferably, the proximal and distal ends of the tube  674  and  676  are not shape set by the mandrel and are not cut by the laser  680  so that the proximal and distal ends  674  and  676  do not change in shape and only slightly expand in size under heating and return to the size of the native tube  668  after the heat is removed. Preferably, the laser cuts are programmed via a computer. To ensure that the laser cuts only one surface of the tube wall at the time (and not the surface directly opposite the desired cutting surface), the laser  680  is preferably focused between the inner and outer diameter of the desired cutting surface and a coolant is passed through the memory metal tube  668  so that the laser  680  cools before reaching the surface directly opposite the desired cutting surface. 
     The portions of the wall not cut by the laser  680  create the proximal and distal tubes  674  and  676  as well as the other components of the distal basket  611 , and memory metal strips  657  and  666 , as described. 
     Preferably, the memory metal selected for the native tube  668  has a heat of transformation below average human body temperature (37° C.) so that the distal basket  611  has sufficient spring and flexibility after deployment from the catheter  632  in the human blood vessel  688 . 
     In some embodiments, the native tube  668  (and hence the distal and proximal tubes  674  and  676 ) have an outer diameter of less than about 4 French, e.g., a diameter of about 1 to about 4 French. In some embodiments, the diameter of the pull wire  643  is between about 0.008 inches and about 0.051, as noted above, and in such embodiments, the diameter of the pull wire  43  may be approximately equal to the inner diameter  672  of the native nitinol tube  668 . 
     Without being bound by any particular theory, it is believed that manufacturing the distal basket  611  from a single memory metal tube  668  provides ease of manufacturing and safety from mechanical failure and provides tensile strength necessary for the system  610  to remove hard thrombus  617  and other obstructions. 
     In some embodiments, the method further includes providing a coaxial tube  618 , said coaxial tube  618  comprising a hollow interior  620  receiving said pull wire  643 , a proximal end  621 , and a distal end  619 , and attaching said distal end  619  of said coaxial tube  643  to said proximal tube  625 . In some embodiments, the method of attaching said distal end  619  of said coaxial tube  618  to said proximal tube  625  comprises welding or soldering said distal end  619  of said coaxial tube  618  to said proximal tube  625 . In other embodiments, the method of attaching said distal end  619  of said coaxial tube  618  to said proximal tube  625  comprises shrink wrapping said distal end  619  of said coaxial tube  618  to said proximal tube  625 . In other embodiments, the method of attaching said distal end  619  of said coaxial tube  618  to said proximal tube  625  comprises gluing said distal end  619  of said coaxial tube  618  to said proximal tube  625 . 
     Optionally, after step e, the basket  611  further comprises a row  648  of proximal cells  636 , each proximal cell  636  defined by a plurality of memory metal strips  666  and comprising a proximal crown  638  located at a proximal end of the cell  636  and pointing in the proximal direction and a distal crown  624  located at a distal end of the cell and pointing in the distal direction and further wherein each of said proximal crowns  638  of said proximal cells  636  is attached to a distal end  653  of a proximal tether memory metal strip  657 . Optionally, after step e, the basket  610  further comprises a row  647  of distal cells  622  located distal to said proximal cells  636  and connected to said distal crowns  624  of said proximal cells  636 , each distal cell  622  defined by a plurality of memory metal strips  666  and comprising a proximal crown  637  located at a proximal end of the cell  622  and pointing in the proximal direction and a distal crown  623  located at a distal end of the cell  622  and pointing in the distal direction, and further wherein the number of distal cells  622  is twice the number of proximal cells  636 . Optionally, after step e, the basket system  610  further comprises a row  649  of strut memory metal strips  652 , each strut memory metal strip  652  having a proximal end  651  attached to a distal crown  624  of a proximal cell  636  and a distal end  650  attached to a proximal crown  637  of a distal cell  622 . Optionally, the basket  611  comprises no welded or soldered components and said proximal tether memory metal strips  657  are integral with said proximal cell crowns  638 . 
     Optionally, after step e, the basket system  611  comprises between two and four proximal tether memory metal strips  657 . Optionally, prior to cutting the memory metal tube  668 , the memory metal tub  668  has an outer diameter  686  that is from about 0.011 inches to about 0.054 inches and an inner diameter  684  that is from about 0.008 inches to about 0.051 inches. Optionally, after step e), the proximal tube  639  and distal tube  625  have an outer diameter that is from about 0.02 inches to about 0.03 inches and an inner diameter that is from about 0.01 inches to about 0.02 inches. Optionally, the method further includes placing said basket  611  inside a catheter  632  comprised of a biocompatible material. Optionally, the method further includes the steps of placing the basket  611  inside a lumen  688  of an animal and using the basket to retrieve an object  617  located inside said lumen  688 . 
     In other embodiments, as shown in  FIGS. 58-60 , the basket system  610  does not include a proximal hub/junction  639  and the system  610  includes a plurality of cords  703  (e.g., 2-4 cords  703 ) instead of or in addition to said proximal tether memory metal strips  657 . For example,  FIG. 15-17  shows a first set of embodiments, where soft cords made of rubber, nylon, suture material, braided catheter material, platinum coils, and ultrathin nitinol for example, are used. The cords  703  have a proximal end  704  attached to the distal end  619  of the coaxial tube  618  and a distal end  705  attached to a proximal crown  638  of a proximal cell  636 .  FIG. 58  illustrates one embodiment in which the cords  703  are relatively long.  FIG. 59  illustrates another embodiment in which the cords  703  are relatively short. 
     In some embodiments, the system  610  is used in a method that includes 
     a) providing the system  610 ; 
     b) positioning the system  610  in said lumen  688 , said basket  611  located in said catheter  632  in a collapsed state (see  FIG. 60A ); 
     c) deploying said distal basket  611  from said distal end  614  of said catheter  632  so that said proximal crowns  638  of said proximal cells  636  are distal to said obstruction  617 ; 
     d) allowing said distal basket  611  to move to said relaxed state (see  FIG. 60B ); 
     e) moving said coaxial tube  618  distally relative to said distal hub/junction  625  so that said coaxial tube  618  moves distally to the proximal-most crown  638  (see  FIG. 60C ); 
     f) moving said distal basket  611 , said pull wire  643  and said coaxial tube  618  proximally simultaneously so that said distal basket  611  moves over said obstruction  617  (see  FIG. 60D ); 
     g) moving said coaxial sheath  618  distally relative to said distal hub/junction  625  so that said distal basket height  661 , as measured at the proximal-most crown  638 , decreases and said coaxial tube  618  is closer to said distal hub/junction  625  as compared to the proximal-most crown  638  (see  FIG. 60E ); and
 
h) removing said distal basket  611  and said obstruction  617  from said lumen  688  (see  FIG. 60F ).
 
     In other embodiments, steps g-h above are replaced with the steps below: 
     g) moving said coaxial sheath  618  proximally relative to said distal hub/junction  625  so that said distal basket height  661 , as measured at the proximal-most crown  661 , decreases; 
     h) moving said catheter  632  distally relative to said distal hub/junction  625  so that said catheter  632  re-sheaths said coaxial sheath  618  and partially re-sheaths said cords, thereby decreasing said distal basket height  661 , as measured at the proximal-most crown  638 ;
 
i) removing said distal basket  611  and said obstruction  617  from said lumen  688 .
 
     As shown, an advantage of this embodiment is that the cords  703  move distally to the proximal-most crowns  638  so they do not obstruct entry way of the clot  617  into the distal basket  611 . 
     In other embodiments, as shown in  FIGS. 61 and 62 , the system  610  includes cords  703  and proximal tether memory metal strips  657 . In such embodiments, the proximal tether memory metal strips  657  have a proximal end  655  attached to the distal end  619  of the coaxial tube  618 . The cords have a proximal end attached to the distal end  653  of the proximal memory metal strips  657  and a distal end attached to a proximal crown  638  of a proximal cell  636 . 
     In some embodiments, the system  610  is used in a method of removing an object from an interior lumen  688  of an animal, said lumen  688  having an interior wall forming said lumen  688  that includes: 
     a) providing the system  610 ; 
     b) positioning the system  610  in said lumen  688 , said basket  611  located in said catheter  632  in a collapsed state; 
     c) deploying said distal basket  611  from said distal end  614  of said catheter  632  so that said proximal crowns  638  of said proximal cells  636  are distal to said obstruction  617 , said coaxial sheath  618  is proximal to said obstruction  617 , said proximal tether memory metal strips  657  are proximal to said obstruction  617 , and said cords are adjacent to said obstruction  617 ; 
     d) allowing said distal basket  611  to move to said relaxed state (see  FIG. 62A ); 
     e) moving said coaxial tube  618  distally relative to said distal hub/junction  625  and moving said basket  611  proximally so that said proximal tether memory metal strips  657  move distally relative to the proximal-most crown  638  and said obstruction  617  is sandwiched between said proximal tether memory metal strips  657  and said proximal crowns  638  of said proximal cells  636  (see  FIG. 62B ); and 
     f) removing said distal basket  611  and said obstruction  617  from said lumen  688 . 
     The Embodiments of  FIGS. 66A-82   
     During the development of the medical devices shown in  FIGS. 11-20 , it became apparent that it would be desirable to make devices from a single tube of memory metal (e.g., nitinol) that had a larger outer diameter than the inner diameter of the catheter. More particularly, it was desirable to create the baskets from a single tube having an outer diameter of 0.025 inches but deploy the baskets from a catheter having an inner diameter of 0.021 inches. This was not possible if the uncut proximal and distal ends of the tube were left intact in the device (as shown in  FIG. 2  for example). Thus, a new method was developed to attain this objective, as shown in  FIGS. 66-82 . One method to achieve this was to create scoring lines (referred to below as perforations  814 ,  816 ,  835  and  838 ) so that uncut excess material of first tube wall  803  would tend to tear cleanly and consistently along the scoring lines  814 ,  816 ,  835  and  838 , as described below. 
     More particularly, as shown in  FIGS. 66-82 , the present disclosure provides: a method of manufacturing a medical device  827  comprising: 
     a) providing a first tube  800  comprised of a memory metal, the first tube  800  having a first tube exterior  801 , a first tube hollow interior  802 , a first tube wall  803  separating the first tube exterior  801  from the first tube hollow interior  802 , a first tube proximal end  804  comprising a first tube proximal aperture  805  leading to the first tube hollow interior  802 , a first tube distal end  806  comprising a first tube distal aperture  807  leading to the first tube hollow interior  802 , a first tube length  808  extending from the first tube proximal end  804  to the first tube distal end  806 , a first tube perimeter  809  (more particularly a circumference if first tube  800  is generally cylindrical) generally perpendicular to the first tube length  808 , a first tube width  810  (more particularly an outer diameter if first tube  800  is generally cylindrical) generally perpendicular to the first tube length  808 , and a middle portion  811  between the first tube proximal end  804  and the first tube distal end  806 , the middle portion  811  having a middle portion width  812  (more particularly an outer diameter if first tube  800  is generally cylindrical) generally parallel to the first tube width/diameter  810  (see  FIG. 66A ) (preferably the first tube width  810  is uniform along the first tube length  808  in step a) as shown in  FIG. 66A );
 
b) using a cutting instrument  813  (e.g. a laser) to cut portions of the wall  803  of the first tube  800  (see  FIG. 66B ) and form i) a plurality of non-contiguous proximal perimeter perforations  814  located adjacent to the first tube proximal end  804  and spaced about the perimeter/circumference  809  of the first tube  800  and each proximal perimeter perforation  814  is separated by a proximal perimeter gap  870  (representing uncut portions of the wall  803 ), the plurality of non-contiguous proximal perimeter perforations  814  and proximal perimeter gap  870  define a proximal end tab  815  located at the proximal end  804  of the first tube  800  (see  FIGS. 67, 69, 70 and 73 ); ii) a plurality of non-contiguous distal perimeter perforations  816  located adjacent to the first tube distal end  806  and spaced about the perimeter/circumference  809  of the first tube  800  and each distal perimeter perforation  816  is separated by a distal perimeter gap  871  (representing uncut portions of the wall  803 ), the plurality of non-contiguous distal perimeter perforations  816  and the distal perimeter gaps  871  defining a distal end tab  817  located at the distal end  806  of the first tube  800  (see  FIGS. 67 and 68 ); iii) a matrix  818  in the middle portion  811  comprising a plurality of middle portion memory metal strips  820  forming a plurality of cells  819  (see  FIG. 67 ); iv) a plurality of proximal memory metal strips  821  connecting the middle portion  811  to the proximal end tab  815 , each proximal memory metal strip  821  having a proximal memory metal strip proximal end  822  connected to the proximal end tab  815 , a proximal memory metal strip distal end  823  connected to a cell  819  of the middle portion  811  and a proximal memory metal strip length  859  extending from the proximal memory metal strip proximal end  822  to the proximal memory metal strip distal end  823  (see  FIGS. 67, 69, 70 and 73 ); and v) a plurality of distal memory metal strips  824  connecting the middle portion  811  to the distal end tab  817 , each distal memory metal strip  824  having a distal memory metal strip distal end  826  connected to the distal end tab  817 , a distal memory metal strip proximal end  825  connected to a cell  819  of the middle portion  811 , and a distal memory metal strip length  858  extending from the distal memory metal strip proximal end  825  to the distal memory metal strip distal end  826 , wherein the proximal end tab  815  connects the proximal ends  822  of the proximal memory metal strips  821  and the distal end tab  817  connects the distal ends  826  of the distal memory metal strips  824  (see  FIGS. 67 and 68 );
 
c) shape setting at least the middle portion  811  (e.g., the middle portion  811  and at least a portion of the proximal memory metal strips  821  and distal memory metal strips  824 ) to expand the width/diameter  812  of the middle portion  811  (preferably by expanding the middle portion  811  using a mandrel such as that shown in  FIGS. 63 and 64  to form a basket  851 );
 
d) after step c), polishing (e.g. electropolishing) the first tube  800 , wherein said polishing expands the plurality of proximal perimeter perforations  814  about the first tube perimeter/circumference  809  and expands the plurality of the distal perimeter perforations  816  about the first tube perimeter/circumference  809  (see  FIG. 71 , which shows expanding the proximal perimeter perforations  814  so that adjacent proximal perimeter perforations  814  approach each other and the proximal perimeter gaps  870  becoming smaller; the distal perimeter perforations  816  expand in a similar manner);
 
e) tearing along the plurality of proximal perimeter perforations  814  to free the proximal ends  822  of the proximal memory metal strips  821  from the proximal end tab  815  and each other and tearing along the plurality of distal perimeter perforations  816  to free the distal ends  826  of the distal memory metal strips  824  from the distal end tab  817  and each other (see  FIGS. 72 and 74 , which shows removing of the proximal end tab  815 ; the distal end tab is  817  removed in a similar manner);
 
f) joining the free distal ends  826  of the distal memory metal strips  824  (see  FIG. 78 ) and joining the free proximal ends  822  of the proximal memory metal strips  821  (see  FIGS. 75, 76E-76G  and  77 ) to form a medical device  827  comprised of the joined distal ends  826  of the distal memory metal strips  824 , the joined proximal ends  822  of the proximal memory metal strips  821 , and the shape set middle portion  811 , the medical device  827  having a medical device length  828  extending at least from the joined distal ends  826  of the distal memory metal strips  824  to at least the joined proximal ends  822  of the proximal memory metal strips  821  and a medical device width  829  generally perpendicular to the medical device length  828  (the term “at least” refers to the fact that the medical device  827  may include a lead wire at the distal end as described previously); and
 
g) inserting the medical device  827  into a catheter  830  comprising a catheter interior  831  having an interior width  832  (more particularly an inner diameter if the catheter  830  is generally cylindrical), an open catheter proximal end (not shown in  FIGS. 66-82  but shown as  212  in  FIG. 21 ) leading to the catheter interior  831 , an open catheter distal end  833  leading to the catheter interior  831 , the catheter  830  comprised of a biocompatible material, wherein the catheter interior width  832  (more particularly inner diameter if the catheter  830  is generally cylindrical) is less than the first tube width/outer diameter  810 , wherein the medical device  827  comprises a collapsed state wherein the medical device width  829  is less than the catheter interior width/diameter  832  and an expanded state wherein the medical device width  829  is greater than the catheter interior width/diameter  832 , and further wherein the catheter  830  is configured to envelope the medical device  827  when the medical device  827  is in the collapsed state (see  FIG. 81 ).
 
     Optionally, the first tube  800  is generally cylindrical in shape and comprises a first tube diameter  810  and a first tube circumference  809  and the proximal perimeter perforations  816  are arranged in a generally straight line about the circumference  809  of the first tube  800  (see  FIGS. 67, 69, 70, 73 and 79 ) and the distal perimeter perforations  816  are arranged in a generally straight line about the circumference  809  of the first tube  800  (see  FIGS. 67-68 ). 
     Optionally step b) further comprises using the cutting instrument  813  to cut additional portions of the wall  803  of the first tube  800  and form a plurality of non-contiguous proximal longitudinal perforations  835  located in a proximal segment  836  of each proximal memory metal strip  821  adjacent to the proximal end  822  of the respective proximal memory metal strip  821  and extending generally along the first tube length  808  (see  FIGS. 67, 69, 70, 79 and 82 ). Each adjacent non-contiguous proximal longitudinal perforation  835  is separated by a proximal longitudinal gap  876  (representing uncut portions of the wall  803 ). The proximal longitudinal perforations  835  and the proximal longitudinal gaps  876  form a first longitudinal side  872  and a second longitudinal side  873  of each proximal segment  836 . It will be understood that the non-contiguous proximal longitudinal perforations  835  extend generally along the first tube length  808  but are not necessarily parallel to the first tube length  808  as shown in  FIGS. 79 and 82  as indicated by reference line  878 ; the reference line  878  is not a component of the system but is merely drawn in the illustration to show the angle. A proximal longitudinal tab  837  is located between and connects adjacent proximal segments  836  of proximal memory metal strips  821  and is formed of uncut portions of the wall  803 . 
     Optionally step b) further comprises using the cutting instrument  813  to cut additional portions of the wall  803  of the first tube  800  and form a plurality of non-contiguous distal longitudinal perforations  838  located in a distal segment  839  of each distal memory metal strip  824  adjacent to the distal end  826  of the respective distal memory metal strip  824  and extending generally along the first tube length  808  (see  FIGS. 67 and 68 ). Each adjacent non-contiguous distal longitudinal perforation  838  is separated by a distal longitudinal gap  877  (representing uncut portions of the wall  803 ). The distal longitudinal perforations  838  and the distal longitudinal gaps  877  form a first longitudinal side  874  and a second longitudinal side  875  of each distal segment  839 . It will be understood that the non-contiguous distal longitudinal perforations  838  extend generally along the first tube length  808  but are not necessarily parallel to the first tube length  808  as best seen in  FIG. 68 . A distal longitudinal tab  840  is located between and connects adjacent distal segments  839  of distal memory metal strips  824  and is formed of uncut portions of the wall  803 . 
     Preferably, the polishing expands the plurality of proximal longitudinal perforations  835  about the first tube length  808  (see  FIG. 71 ) and expands the plurality of the distal longitudinal perforations  838  about the first tube length  808  (so that adjacent proximal longitudinal perforations  835  on the first longitudinal side  872  of the proximal segment  836  approach each other, so that adjacent proximal longitudinal perforations  835  on the second longitudinal side  873  of the proximal segment  836  approach each other, so that adjacent distal longitudinal perforations  838  on the first longitudinal side  874  of the distal segment  839  approach each other, and so that adjacent distal longitudinal perforations  838  on the second longitudinal side  875  of the distal segment  839  approach each other), and step e) further comprises tearing along the plurality of proximal longitudinal perforations  835  to remove the proximal longitudinal tabs  837  (see  FIGS. 72 and 74 ) and disconnect the proximal segments  836  from each other and tearing along the plurality of distal longitudinal perforations  838  to remove the distal longitudinal tabs  840  and disconnect the distal segments  839  from each other. 
     Optionally, after step d), the plurality of proximal longitudinal perforations  835  become nearly continuous (see  FIGS. 72 and 74 ), the plurality of distal longitudinal perforations  838  become nearly continuous, the plurality of proximal perimeter perforations  814  become nearly continuous (see  FIGS. 72 and 74 ) and the plurality of distal perimeter perforations  816  become nearly continuous. 
     Optionally, the first tube  800  is generally cylindrical in shape and comprises a first tube outer diameter  810 , wherein said catheter  830  is generally cylindrical in shape and comprises a catheter inner diameter  832  (interior diameter), wherein said step of joining the free proximal ends  822  of the proximal memory metal strips  821  comprises attaching the free proximal ends  822  of the proximal memory metal strips  821  to a second tube  841 , the second tube  841  generally cylindrical in shape and comprising a second tube outer diameter  842 , wherein said step of joining the free distal ends  826  of the distal memory metal strips  824  comprises attaching the free distal ends  826  of the distal memory metal strips  824  to a third tube  843 , the third tube  843  generally cylindrical in shape and comprising a third tube outer diameter  844 , and further wherein said second tube outer diameter  842  and said third tube outer diameter  844  are less than said first tube outer diameter  810  and less than said catheter inner diameter  832  (see  FIGS. 77 and 78 ). 
       FIGS. 76A-76G  illustrate an embodiment where the second tube  841  is a coil system  845 . For example, the method may include providing a pull wire  850 . (See  FIG. 76A ). The next step may be providing a coil system  845  that includes a proximal coil  847 A and a distal coil  847 B separated by a longitudinal space  848  between the proximal end  866  of the distal coil  847 B and the distal end  867  of the proximal coil  847 A. (See  FIG. 76B ). The next step may involve soldering the pull wire  850  to the proximal coil  847 A so that the pull wire  850  is surrounded by the proximal coil  847 A. (See  FIGS. 76C and 76D ; soldering denoted by the numeral  865 A). The next step may involve joining the proximal ends  822  of the proximal memory metal strips  821  by soldering the proximal ends  822  of the proximal memory metal strips  821  at the longitudinal space  848  between the coils  847 A and  847 B. (See  FIGS. 76E-76G ; soldering is denoted by the numeral  865 B). As shown in  FIG. 76F , the proximal memory metal strips  821  are located between the pull wire  850  (which forms a core of the coil system  845 ) and the proximal coil  847 A. Optionally, the pull wire  850  comprises a pull wire proximal end  860 , a pull wire distal end  861 , a pull wire length  862  extending from the pull wire proximal end  860  to the pull wire distal end  861  and a pull wire width  863  generally perpendicular to the pull wire length  862  and further wherein said pull wire width  863  comprises a segment  864  in which the pull wire width  863  tapers proximally along the pull wire length  862 . (See  FIG. 76A ). 
     Optionally, the proximal memory metal strips  821  comprise a width  849  generally perpendicular to the first tube length  808  and further wherein said widths  849  of said proximal memory metal strips  821  taper as the proximal memory metal strips  821  approach the proximal end tab  815  (see  FIG. 79  and  FIG. 82 ). 
     The middle portion  811  may be shape-set in any form. Preferably, the middle portion  811  is shape set in the form of a basket  851 , as described above, that is configured to capture a foreign object in a lumen of an animal such as an intracranial thrombus. For example, optionally the middle portion memory metal strips  820  of said shape set middle portion  811  form a basket  851  comprising a basket interior  852  and a basket length  853  generally parallel to the medical device length  828 . Optionally, in the expanded state, the basket  851  comprises a first pair of distal crowns  854  not attached to another cell  819  of the basket  851  and pointing generally in the distal direction, the distal crowns  854  in the first pair of distal crowns  854  located approximately the same distance along the basket length  853  and between 150 degrees and 180 degrees relative to each other, and further wherein the basket  851  further comprises a second pair of distal crowns  855  not attached to another cell  819  of the basket  851  and pointing generally in the distal direction, the second pair of distal crowns  855  located distally relative to the first pair of distal crowns  854 , each of the distal crowns in the second pair of distal crowns  855  located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns  854 , the distal crowns in the second pair of distal crowns  855  located approximately the same distance along the basket length  853  and further wherein each of the distal crowns in the first and second pair of distal crowns  854  and  855  comprises an x-ray marker  856 , the x-ray maker  856  more visible under x-ray as compared to the middle portion strips  820  when the basket  851  is located in a cranial blood vessel inside the body of a human and the x-ray is taken from outside the human&#39;s body and further wherein each distal crown in the first and second pair of distal crowns  854  and  855  forms part of a cell  819 . Optionally, each distal crown in the first and second pair of distal crowns  854  and  855  forms part of an enlarged cell  857  and further wherein the surface area of the enlarged cells  857  in the relaxed state is greater than the surface area of the other cells  819  of the basket  811  and further wherein the enlarged cells  857  are configured to allow a thrombus to pass therethrough and into the basket interior  852 , and further wherein the basket  811  comprises a non-uniform outward radial force along the basket length  853  due to the offset enlarged cells  857 . (See  FIG. 80 ). Optionally, in step b), each distal end  823  of each proximal memory metal strip  821  is connected to a proximal crown  869  of a proximal cell  819 B of the middle portion  811 , said proximal crown  869  of said proximal cell  819 B located at the proximal end of the basket  811  and pointing generally in the proximal direction, and each proximal end  825  of each distal memory metal strip  824  is connected to a distal crown  868  of a distal cell  819 A, each distal crown  868  pointing generally in the distal direction and located at the distal end of the basket  811  (see  FIGS. 67 and 80 ). In other words, in the preferred embodiment the middle portion  811  preferably forms a basket  851  as described with the basket embodiment shown in  FIGS. 11-20 . However, other basket designs are also possible. Preferably, in the medical device  827 , the middle portion width/diameter  812  in the expanded state tapers as the proximal memory metal strips  821  approach the second tube  841  and as the distal memory metal strips  824  approach the third tube  843 . (See  FIG. 81 ). (Preferably, the proximal memory metal strips  821  twist as shown in  FIGS. 73-75, 77 and 80-81  and as described above with respect to  FIGS. 11 and 20  for example—i.e., each distal end  823  of the respective proximal memory metal strip  821  is 180 degrees offset from the proximal end  822  of the same respective proximal memory metal strip  821 ). 
     Optionally, in the expanded state, the medical device width  829  is less than the medical device length  828 . Optionally, said catheter inner diameter  832  is at least about 0.001 inches (e.g., between 0.001 and 0.015 inches, preferably between 0.003 and 0.015 inches) less than said first tube outer diameter  810 . The medical device  827  may further include a lead wire at the distal end as described previously. 
     After step e), the proximal end tab  815 , the distal end tab  817 , the proximal longitudinal tabs  837  and the distal longitudinal tabs  840  are discarded. 
     Optionally, after step e), the proximal memory metal strips  821  comprise a smooth periphery and the distal memory metal strips  824  comprise a smooth periphery. In other words, preferably, the proximal end tabs  815  tear cleanly along the proximal perimeter perforations  814 , the distal end tabs  817  tear cleanly along the distal perimeter perforations  816 , the proximal longitudinal tabs  837  tear cleanly along the proximal longitudinal perforations  835  and the distal longitudinal tabs  840  tear cleanly along the distal longitudinal perforations  838 . 
     The steps of the method described above with reference to  FIGS. 66-82  may be performed simultaneously or in any suitable order. In addition, one or more of the steps, such as step d) may be omitted. Further, step c) (expanding the middle portion  811 ) may be performed using methods now known or hitherto developed. Moreover, the first tube  800  may only include proximal perimeter perforations  814 , proximal longitudinal perforations  835 , distal perimeter perforations  816  and/or distal longitudinal perforations  838 . In other words, the first tube  800  may be cut to include only perimeter perforations  814  and/or  816  or only longitudinal perforations  835  and/or  838  as shown in  FIG. 82  which only includes proximal longitudinal perforations  835  that extend to the proximal end  804  of the first tube  800 ). Preferably, the first tube  800  is cut to include at least proximal longitudinal perforations  835  and distal longitudinal perforations  838 . 
     The Embodiments of  FIGS. 83-89   
       FIGS. 83-89  illustrate a similar catheter-delivered endovascular device to the configuration shown in  FIG. 42 . The catheter-delivered endovascular device  890  of  FIGS. 83-89  may be used to retrieve a clot or other foreign object from a lumen of an animal. In addition, the catheter-delivered endovascular device  890  of  FIGS. 83-89  may be used to open a constricted blood vessel  950  in the case of a subarrachnoid hemorrhage induced vasospasm or other vasospasm. 
     The catheter-delivered endovascular device  890  of  FIGS. 83-89  includes a pull wire  891  having a proximal end, a distal end  892  and a pull wire longitudinal axis  894  extending from the proximal end to the distal end  892 . The pull wire  891  may have one or more features described above with respect to the systems of  FIGS. 1-82 , and may be comprised of a biocompatible metallic material for example. 
     Optionally, the catheter-delivered endovascular device  890  further includes a deployable dual basket system  895  attached to the pull wire  891  and comprising a system perimeter/circumference  896  separating a system interior  897  from a system exterior  898 , a system proximal end  899 , a system distal end  900 , a system height  901  having a system height center  902 , a system width  903  perpendicular to the system height  901  and having a system width center  904 , a system longitudinal axis  905  from the system proximal end  899  to the system distal end  900  and extending through the system height center  902  and system width center  904 . The system height  901  and width  903  may vary along the system longitudinal axis  905 , as seen in  FIGS. 83-84 , e.g., a smaller height and width at the proximal end  899 , the distal end  900 , and the middle of the system as seen in  FIGS. 83-84 . The system  895  is preferably generally in the form of a tapered cylinder with a variable diameter constituting the system height  901  and system width  903 , and accordingly, the system perimeter  896  is preferably a system circumference. 
     Optionally, the deployable dual basket system  895  includes a proximal basket  906  attached to the pull wire  891 , the proximal basket  906  comprising a proximal basket perimeter/circumference  907  separating a proximal basket interior  908  from a proximal basket exterior  909 , a proximal end  910  forming the system proximal end  899 , a distal end  911 , a proximal basket height  912  generally parallel to the system height  901 , a proximal basket width  913  generally parallel to the system width  903  and perpendicular to the proximal basket height  912 , a proximal basket longitudinal axis  914  extending from the proximal basket proximal end  910  to the distal end  911  and generally parallel to the system longitudinal axis  905  and generally perpendicular to the proximal basket height  912  and proximal basket width  913 , a proximal junction  915  located at the proximal end  910  of the proximal basket  906 , a plurality of proximal cells  916  distal to the proximal junction  915  and defined by a plurality of proximal basket memory metal strips  917 , each proximal cell  916  comprising a proximal crown  918  located at the proximal end of the proximal cell  916  and pointing generally in the proximal direction and a distal crown  919  located at the distal end of the proximal cell  916  and pointing generally in the distal direction, a plurality of proximal tether memory metal strips  920  located between the proximal junction  915  and the proximal cells  916  and connecting the proximal cells  916  to the proximal junction  915 , each proximal tether memory metal strip  920  having a proximal end  921  attached to the proximal junction  915 , a distal end  922  attached to a proximal crown  918  of a proximal cell  916 . Due to the fact that the proximal basket  906  is preferably formed from a memory metal tube, as with the prior embodiments, the proximal basket  906  preferably has a relaxed/expanded state (as shown in  FIGS. 83, 84, 89F, 89G, and 89H ) wherein the proximal basket  906  has a first height  912  and a first width  913 , and a collapsed state (see  FIGS. 89B, 89C and 89D , in which the proximal basket  906  is in the catheter interior  944 ) wherein the proximal basket  906  has a second height and a second width, the second height less than the first height  912  and the second width less than the first width  913 . ( FIG. 89E  shows the distal end  911  of the proximal basket  906  in the relaxed state and the proximal end  910  (which is not clearly visible) is in the collapsed state. 
     Optionally, the deployable dual basket system  895  further includes: a distal basket  923  distal to the proximal basket  906  and comprising a distal basket circumference  924  separating a distal basket interior  925  from a distal basket exterior  926 , a proximal end  927 , a distal end  928  forming the system distal end  900 , a distal basket height  929  generally parallel to the system height  901 , a distal basket width  930  generally parallel to the system width  903  and generally perpendicular to the distal basket height  929 , a distal basket longitudinal axis  931  extending from the distal basket proximal end  927  to the distal basket distal end  928  and generally parallel to the system longitudinal axis  905 , a distal junction  932  located at the distal end  928  of the distal basket  923 , a plurality of distal cells  934  proximal to the distal junction  932  and defined by a plurality of distal basket memory metal strips  933 , each distal cell  934  comprising a proximal crown  938  located at the proximal end of the distal cell  934  and pointing generally in the proximal direction and a distal crown  937  located at the distal end of the distal cell  934  and pointing generally in the distal direction. Due to the fact that the distal basket  923  is preferably formed from a memory metal tube, as with the prior embodiments, the distal basket  923  preferably has a relaxed/expanded state (as shown in  FIGS. 83, 84, and 89E-89H ) wherein the distal basket  923  has a first height  929  and a first width  930 , and a collapsed state (see  FIG. 89B  in which the distal basket  923  is in the catheter interior  944 ) wherein the distal basket  923  has a second height and a second width, the second height less than the first height  929  and the second width less than the first width  930 . ( FIG. 89C  shows the distal end  928  of the distal basket  923  in the expanded state and the proximal end  927  (which is in the catheter interior  944 ) is in the collapsed state). 
     Optionally, the deployable dual basket system  895  further includes a plurality of basket connector tether memory metal strips  939  located between the proximal basket  906  and the distal basket  923  and connecting the proximal basket  906  to the distal basket  923  and located between the proximal basket  906  and the distal basket  923 . Optionally, each basket connector tether memory metal strip  939  has a proximal end  940  attached to a distal crown  919  of a cell  916  located at the distal end of the proximal basket  906  and a distal end  941  attached to a proximal crown  938  of a cell  934  located at the proximal end of the distal basket  923 , and a basket connector tether memory metal strip longitudinal axis extending from the proximal end  940  of the basket connector tether memory metal strip  939  to the distal end  941  of the basket connector tether memory metal strip  939 . 
     As previously mentioned, the catheter-delivered endovascular device  890  further includes a catheter  943  having an interior  944 , a proximal end  945  leading to the interior  944  and a distal end  946  leading to the interior  944 , the catheter  943  comprised of a biocompatible material and configured to envelope the deployable dual basket system  895  when the proximal basket  906  and distal basket  923  are in the collapsed state. The catheter  943  may have one or more features described above with respect to the catheters of the systems shown in  FIGS. 1-82  and may be polymeric as described above. 
     Optionally, in the relaxed state and the collapsed state, each basket connector tether memory metal strip  939  rotates a degree of rotation about the system circumference  896  relative to the proximal basket longitudinal axis  914 , the distal basket longitudinal axis  931  and the system longitudinal axis  905 . Optionally, each basket connector tether memory metal strip  939  rotates in the same direction; for example, if the deployable dual basket system  895  has two basket connector tether memory metal strips  939  both will rotate clockwise or both will rotate counterclockwise as viewed from the system proximal end  899 . The reason that the basket connector tether memory metal strips  939  both preferably rotate in the same direction is that the deployable dual basket system  895  is preferably initially made from a single memory metal tube using the cut pattern for the basket connector tether memory metal strips  939  shown in  FIG. 85  (the memory metal tube is shown flat in  FIG. 85  for illustration purposes). As discussed below, after cutting the tube and removing the proximal end of the tube and the distal end of the tube, the proximal tether memory metal strips  920  may be re-joined as shown in  FIG. 88  using coil and the distal basket memory metal strips distal ends  936  may be rejoined using third tube  968  as shown in  FIG. 87 . The rotating basket connector tether memory metal strips  939  preferably provide a flex point so that the deployable dual basket system  895  may navigate tortuous blood vessels  950 , as shown in  FIG. 89 . It will be understood that the rotation is a characteristic of the connector tether memory metal strips  939  and does not refer to user manipulation of the connector tether memory metal strips  939 —i.e., the connector tether memory metal strips  939  rotate without user manipulation. 
     Optionally, each basket connector tether memory metal strip  939  rotates a greater degree of rotation in the collapsed state as compared to the degree of rotation of the same basket connector tether memory metal strip  939  in the relaxed state if the basket connector tether memory metal strips  939  are prepared from a single memory metal tube that is expanded and shape set. The reason for this is that the collapsed state mimics the native portion and has the diameter of the tube from which the deployable dual basket system  895  is cut, whereas the relaxed state has a greater diameter, and accordingly, the basket connector tether memory metal strips  939  must travel a greater distance in the relaxed state. Thus, for example, a given basket connector tether memory metal strip  939  may rotate 180 degrees for example in the collapsed state but only 90 degrees in the relaxed state. Optionally, in the relaxed state, the basket connector tether memory metal strips  939  each rotate at least about fifteen degrees in the same direction relative to the proximal basket longitudinal axis  914  and the distal basket longitudinal axis  931 . In the collapsed state, the distal end  941  of a first basket connector tether memory metal strip  939  is located between about 90 degrees and about 270 degrees relative to the proximal end  940  of the same basket connector tether memory metal strip  939 , and further wherein in the collapsed state, the distal end  941  of a second basket connector tether memory metal strip  939  is located between about 90 degrees and about 270 degrees relative to the proximal end  940  of the same basket connector tether memory metal strip  939 . 
     Due to the fact that the basket connector tether memory metal strips  939  rotate, in the relaxed state and the collapsed state, a distal crown  919  of the proximal basket  906  attached to the proximal end  940  of a basket connector tether memory metal strip  939  is offset about the system circumference  896  relative to the proximal crown  938  of the distal basket  923  attached to the distal end  941  of the same basket connector tether memory metal strip  939 , and accordingly, the distal crown  919  of the proximal basket  906  will rotate a greater extent in the collapsed state as compared to the relaxed state. 
     Optionally, at least some of the distal basket memory metal strips  933  are located at the distal end  928  of the distal basket  923 , wherein each of the distal basket memory metal strips  933  located at the distal end  928  of the distal basket  923  have a distal end  936 , wherein each of the distal ends  936  of the distal basket memory metal strips  933  located at the distal end  928  of the distal basket  923  converge at the distal junction  932  and further wherein the distal basket  923 , in the relaxed state, comprises a tapered region  948  in which the distal basket height  929  and width  930  decrease as the distal basket memory metal strips  933  located at the distal end  928  of the distal basket  923  approach the distal junction  932 . Likewise, optionally, the proximal basket  906 , in the relaxed state, comprises a tapered region  949  in which the proximal basket height  912  and width  913  decrease as the proximal tether memory metal strips  920  approach the proximal junction  915 . In other words, the proximal tapered region  949  represents a low point in the proximal basket width  913  and height  912  and the distal tapered region  948  represents a low point in the distal basket width  930  and height  929 , which prevents the device  890  from injuring a blood vessel  950  when used to treat vasospasm, as shown in  FIGS. 89A-H  for example. 
     Optionally, in the relaxed state, the radial force of the deployable dual basket system  895  from the proximal ends  940  of the basket connector tether memory metal strips  939  to the distal ends  941  of the basket connector tether memory metal strips  939  is less than the radial force of the proximal basket  906 , as measured from the proximal crowns  918  of the cells  916  of the proximal basket  906  attached to the plurality of proximal memory metal strips  920  to the distal crowns  919  of the cells  916  of the proximal basket  906  attached to the plurality of basket connector tether memory metal strips  939 . The decreased radial force of the basket tether memory metal strips  939  is designed to allow the deployable dual basket system  895  to navigate the tortuous blood vessels  950 , as previously mentioned. 
     Optionally, the system  895  has only two basket connector tether memory metal strips  939 . 
     Optionally, in the relaxed state, the height  912  of the proximal basket  906  is greater than the height  929  of the distal basket  923  and further wherein the width  913  of the proximal basket  906  is greater than the width  930  of the distal basket  923 . Optionally, in the relaxed state, the radial force of the distal basket  923 , as measured from the proximal crowns  938  of the cells  934  of the distal basket  923  attached to the plurality of basket connector tether memory metal strips  939  to the distal-most crown  937  of the distal cells  934  of the distal basket  923 , is less than the radial force of the proximal basket  906  as measured from the proximal crowns  918  of the cells  916  of the proximal basket  906  attached to the plurality of proximal memory metal strips  920  to the distal crowns  919  of the cells  916  of the proximal basket  906  attached to the plurality of basket connector tether memory metal strips  919 . The decreased height  929 , width  930  and radial force of the distal basket  923 , as compared to the proximal basket  906 , is designed to prevent vessel damage given that blood vessels  950  generally taper from the proximal end to the distal end. Optionally, in the relaxed state, the radial force of the proximal basket  906  is substantially uniform from the proximal crowns  918  of the cells  916  of the proximal basket  906  attached to the plurality of proximal memory metal strips  920  to the distal crowns  919  of the cells  916  of the proximal basket  906  attached to the plurality of basket connector tether memory metal strips  939  (i.e., substantially uniform along the length of the proximal basket  906 ). Similarly, optionally, in the relaxed state, the radial force of the distal basket  923  is substantially uniform from the proximal crowns  938  of the cells  934  of the distal basket  923  attached to the plurality of basket connector tether memory metal strips  939  to the distal-most crown  937  of the distal cells  934  of the distal basket  923 . 
     Optionally, the proximal basket interior  908  and the distal basket interior  925  are generally hollow and the proximal basket cells  916  are spaced about the circumference of the proximal basket  906  and the distal basket cells  934  are spaced about the circumference  924  of the distal basket  923 . 
     Optionally, the basket connector tether memory metal strips  939  do not traverse the system interior  897 . In other words, the connector tether memory metal strips  939 , the proximal basket cells  916  and the distal basket cells  934  each define a portion of the perimeter of the deployable dual basket system  895 . 
     Optionally, each of the distal crowns  919  of the proximal basket  906  connected to the basket connector tether memory metal strips  939  are approximately the same distance from the proximal junction  915  and further wherein each of the proximal crowns  938  of the distal basket  923  connected to the basket connector tether memory metal strips  939  are approximately same distance from the distal junction  932 . 
     Optionally, each of the proximal crowns  918  and  938  are connected to a memory metal strip extending proximally from the proximal crowns  918  and  938  and each of the distal crowns  919  and  937  are connected to a memory metal strip extending distally from the distal crowns  919  and  937  (i.e., the proximal crowns  918  and  938  and distal crowns  919  and  937  are connected to either the proximal tether memory metal strips  920 , the proximal basket memory metal strips  917 , the distal basket memory metal strips  933  or the basket connector tether memory metal strips  939 ). In other words, there are no free crowns and the proximal basket  906  and distal basket  923  have a closed cell design to prevent vessel injury. 
     Optionally, the proximal tether memory metal strips form  920  flex points of the deployable dual basket system  895 . The proximal tether memory metal strips  920  may also rotate. For example, in the collapsed state, the distal end  922  of a first proximal tether memory metal strip  920  may be located between about 90 degrees and about 270 degrees relative to the proximal end  921  of the same proximal tether memory metal strip  920 , and further wherein in the collapsed state, the distal end  922  of a second proximal tether memory metal strip  920  may be located between about 90 degrees and about 270 degrees relative to the proximal end  921  of the same proximal tether memory metal strip  920 . Optionally, the first and second proximal memory metal strips  920  intersect/cross adjacent and distal to the proximal junction  915 , as seen in  FIGS. 83 and 84 . In other words, the length/longitudinal axis of the proximal tether memory metal strips  920  (and the length/longitudinal axis of the basket connector tether memory metal strips  939 ) is preferably angled relative to the system longitudinal axis  905 , the proximal basket longitudinal axis  914  or the distal basket longitudinal axis  931 . 
     Optionally, the basket connector tether memory metal strips  939  form the sole attachment of the proximal basket  906  to the distal basket  923 . 
     As mentioned, the device  890  of  FIGS. 83-89  may be used to open a constricted blood vessel in the case of a subarrachnoid hemorrhage induced vasospasm, as seen in  FIG. 89 . It will be understood that the term “blood vessel” includes more than one vessel, as four artery branches are shown in  FIG. 89 , namely, the M2 middle cerebral artery (MCA), the M1 middle cerebral artery (MCA), the internal carotid artery (ICA) and the A1 anterior cerebral artery (ACA). 
     For example, the device  890  may be used in a method of treating a human having a subarrachnoid hemorrhage induced vasospasm in a constricted blood vessel  950  having a proximal region  951  having a constricted height  952  and a constricted width and a distal region  954  having a constricted height  955  and a constricted width, the method comprising the steps of: 
     a) providing the deployable dual basket system  895 , wherein the distal basket  923  and the proximal basket  906  are in the collapsed state and located in the catheter interior  944 ; 
     b) positioning the deployable dual basket system  895  in the blood vessel  950  so that the distal end  946  of the catheter  943  is distal to the distal region  954  of the blood vessel  950 ; 
     c) deploying the proximal basket  906  and the distal basket  923  from the distal end  946  of the catheter  943  into the distal region  954  of the blood vessel  950 ; and 
     d) allowing the height  929  and width  930  of the distal basket  923  and the proximal basket  906  to increase and cause the height  955  and width of the distal region  954  of the blood vessel  950  to increase. Optionally, the method further includes e) moving the deployable dual basket system  895  proximally in the relaxed state within the blood vessel  950  and into the proximal region  951  to cause the height  952  and width of the proximal region  951  of the blood vessel  950  to increase; and f) withdrawing the deployable dual basket system  895  from the blood vessel  950  and out of the human. 
     As mentioned above, the term “blood vessel” may or may not include multiple blood vessels. For example, in  FIG. 89 , the constricted distal region  954  of the blood vessel  950  is the M2 of the middle cerebral artery and the constricted proximal region  951  of the blood vessel  950  is the M1 segment of the middle cerebral artery. Alternatively, the proximal region  951  and distal region  954  may be two discrete (albeit connected) blood vessels. 
     The blood vessel  950  is lined with endothelium  957  and preferably the method comprises performing steps a)—f) without damaging the endothelium  957 . 
     The devices  895  of  FIGS. 83-89  may be manufactured by any suitable method. In an exemplary embodiment, the device  895  is assembled in a method similar to  FIGS. 66-82 . The method may include: a) providing a first tube comprised of a memory metal as previously described with respect to  FIGS. 66-82 ; b) using a cutting instrument to cut portions of the first tube wall and form a proximal matrix (i.e., the precursor to proximal basket  906 ) in the proximal middle portion comprising a plurality of proximal middle portion memory metal strips forming a plurality of proximal matrix cells, each proximal matrix cell having a proximal crown pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and a proximal matrix cell length extending from the proximal crown to the distal crown and generally parallel to the first tube longitudinal axis; ii) a plurality of proximal tether memory metal strips  920 , each proximal tether memory metal strip  920  having a proximal tether memory metal strip proximal end  921 , a proximal tether memory metal strip distal end  922  connected to a proximal crown of a proximal matrix cell and a proximal memory metal strip length extending from the proximal tether memory metal strip proximal end  921  to the proximal tether memory metal strip distal end  922 , the proximal tether memory metal strips  920  formed by moving the cutting instrument at an angle (e.g., between about 90 degrees and 270 degrees relative to the first tube longitudinal axis); iii) a distal matrix (i.e., the precursor to the distal basket  923 ) in the proximal middle portion comprising a plurality of distal middle portion memory metal strips forming a plurality of distal matrix cells, each distal matrix cell having a proximal crown pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and a distal matrix cell length extending from the proximal crown to the distal crown and generally parallel to the first tube longitudinal axis; iv) a plurality of basket connector tether memory metal strips  939 , each basket connector tether memory metal strip  939  having a basket connector tether memory metal strip proximal end  940  connected to a distal crown of a proximal matrix cell, a basket connector tether memory metal strip distal end  941  connected to a proximal crown of a distal matrix cell and a basket connector tether memory metal strip length extending from the basket connector tether memory metal strip proximal end  940  to the basket connector tether memory metal strip distal end  941 , the basket connector tether memory metal strips  939  formed by rotating the first tube about the first tube longitudinal axis relative to the cutting instrument so that the proximal end  940  of a basket connector tether memory metal strip  939  is located between about 90 degrees and about 270 degrees relative to the distal end  941  of the same basket connector tether memory metal strip  939 ; and v) a plurality of proximal longitudinal perforations  958  as described previously, wherein a proximal longitudinal tab  960  is located between and connects adjacent proximal segments  959  of adjacent proximal tether memory metal strips  920  and is formed from uncut portions of the first tube wall; c) shape setting at least the proximal middle portion and the distal middle portion to expand the width of the proximal middle portion and the distal middle portion and form a proximal basket  906  comprised of the proximal matrix cells and a distal basket  923  comprised of the distal matrix cells, the proximal basket  906  and the distal basket  923  connected by the basket connector tether memory metal strips  939 ; d) after step c), polishing the first tube, wherein said polishing expands the plurality of proximal longitudinal perforations  958  so that the proximal longitudinal gaps become smaller and adjacent proximal longitudinal perforations  958  approach each other; e) tearing along the plurality of proximal longitudinal perforations  958  to free the proximal segments  959  of the proximal tether memory metal strips  920  from the proximal longitudinal tabs  960  and each other; f) joining the free proximal segments  959  of the proximal tether memory metal strips  920  (e.g., using a coil as shown in  FIG. 88 ) to form a medical device comprised of the joined proximal segments  959  of the proximal tether memory metal strips  920 , the proximal basket  906 , the basket connector tether memory metal strips  939 , and the distal basket  923 , the medical device having a medical device length extending at least from the distal basket  923  to at least the joined proximal segments  959  of the proximal tether memory metal strips  920  and a medical device width generally perpendicular to the medical device length; and g) inserting the medical device into a catheter  943  comprising a catheter interior  944  having an interior width, an open catheter proximal end  945  leading to the catheter interior  944 , an open catheter distal end  946  leading to the catheter interior  944 , the catheter  943  comprised of a biocompatible material, wherein the medical device comprises a collapsed state wherein the medical device width is less than the catheter interior width and a relaxed state wherein the medical device width is greater than the catheter interior width, wherein the catheter  943  is configured to envelope the medical device when the medical device is in the collapsed state, and further wherein the catheter interior width is less than the first tube outer width. 
     Optionally, the process further includes forming distal longitudinal perforations  961 , distal longitudinal tabs  963  and rejoining the distal basket memory metal strip distal ends  936  using a third tube  968  as described previously and shown in  FIG. 87 . In addition, the process may include forming proximal perimeter perforations  964 , proximal end tab  965 , distal perimeter perforations  966  and distal end tab  967 . It will be appreciated that the manufacturing process has been described and illustrated in abbreviated form due to the similarities to  FIGS. 66-82 . As with  FIGS. 66-82 , the process of  FIGS. 85-88  allows one to form the proximal and distal baskets  906  and  923  from a tube having a first tube diameter, and then removing the proximal and distal ends of the first tube (and attaching coil and third tube  968 , which have a smaller diameter than the first tube diameter) in order to allow the deployable dual basket system  895  to fit inside a catheter having a diameter less than the first tube diameter. 
     Optionally, the cells  916  of the proximal basket  906  are substantially equal in size to each other and to the cells  934  of the distal basket  923  in the relaxed state—e.g., the surface area of the cells  916  and  934  may vary by no more than 5%. 
     The deployable dual basket system  895  of  FIGS. 83-89  may have a length of, for example, between about 10 mm (millimeters) and 60 mm, more preferably between about 30 mm and about 60 mm. 
     The system of  FIGS. 83-89  may include a lead wire extending from the distal junction  932 , as described above with respect to the systems of  FIGS. 1-82 . 
     The Embodiments of  FIGS. 90-105   
       FIGS. 90-105  illustrate another embodiment of the present invention in which the distal body  1018  includes a proximal portion  1042  that has cells  1044  and a distal portion  1048  that has mesh openings  1056 . The proximal portion  1042  may be similar to the baskets shown in  FIGS. 11-89  above. With respect to the distal portion  1048 , the mesh openings  1056  may be small openings that serve to impede blood flow, as well as to capture any small emboli captured by the basket  1040  from escaping through the basket  1040 . 
     Five iterations of the design are shown in  FIGS. 90-105 .  FIGS. 90-93  show an embodiment where the proximal end  1086  of a woven linear strand  1058  of a distal portion  1048  is attached to the distal end  1082  of a basket memory metal strip  1046  of the proximal portion  1042 . In such case, the distal portion  1048  may elongate as shown by comparing  FIG. 91  (relaxed state) and  FIG. 92  (partially collapsed state) when the distal body  1018  moves to the collapsed state.  FIG. 93  shows how the distal portion  1048  of some embodiments of the present invention is able to navigate tortuous blood vessel&#39;s  1100  due to the increased flexibility and decreased radial force of the distal portion  1048  as compared to the proximal portion  1042  in some embodiments of the present invention. The distal ends  1082  of the basket memory metal strips  1046  may be attached to the proximal ends  1086  of the woven linear strands  1058  by welding, soldering or a crimp for example.  FIGS. 94-95  show a second embodiment in which the distal portion  1048  is attached to the interior of the proximal portion  1042  (e.g., by welding, soldering or the like) at multiple connection points  1050  and the distal portion  1048  and the proximal portion  1042  partially overlap. As shown by comparing  FIG. 94  (relaxed state) and  FIG. 95  (partially collapsed state), the distal portion  1048  elongates distal and proximal to the connection points  1050  in moving from the relaxed state to the collapsed state. Meanwhile, the segment at the connection points  1050  preferably does not elongate as shown in  FIG. 95 .  FIGS. 96-97  show an embodiment in which the distal portion  1048  is fully located in the proximal portion interior  1052 . In  FIGS. 96-97 , the sole connection point  1050  of the proximal portion  1042  and the distal portion  1048  is the distal body distal junction  1060 , which may be in the form of a distal tube, including a coil, as previously described. More particularly, the distal ends  1082  of the basket memory metal strips  1046  located at the distal end  1064  of the basket  1040  and the distal ends  1108  of the woven linear strands  1058  meet at the distal body distal junction  1060 .  FIGS. 98-101  show a fourth embodiment. Similar to  FIGS. 96-97 , the design shown in  FIGS. 98-101  includes the distal portion  1048  fully located within the proximal portion interior  1052  and the sole connection point  1050  of the proximal portion  1042  and the distal portion  1048  is the distal body distal junction  1060 , which may be in the form of a distal tube. Again, more particularly, the distal ends  1082  of the basket memory metal strips  1046  located at the distal end  1064  of the basket  1040  and the distal ends  1108  of the woven linear strands  1058  meet at the distal body distal junction  1060 . In  FIGS. 98-101 , the proximal ends  1086  of the woven linear strands  1058  converge at and are attached to a free-floating distal portion proximal junction  1106  that forms the proximal end  1112  of the distal portion  1048 . By contrast, in  FIGS. 96-97 , the proximal ends  1086  of the woven linear strands do not converge and instead are preferably located adjacent to an interior surface  1110  of one or more of the basket memory metal strips  1046 . A fifth iteration is shown in  FIGS. 102-105 . In  FIGS. 102-105 , the distal portion  1048  is fully located within the proximal portion interior  1052  and the distal ends  1108  of the woven linear strands  1058  meet at the distal body distal junction  1060 . However, in  FIGS. 102-105 , the distal portion  1048  is attached to the distal body proximal junction  1038  by a tether, which among other things, is believed to assist in re-sheathing the distal body  1018  into the catheter  1074  (i.e., repositioning the distal body  1018  into the catheter  1074  after the clot has been retrieved) as well as to keep the distal portion  1048  centered and away from the vessel wall when the distal body  1018  moves around a curved vessel  1100 . The tether is preferably located in the center of the height  1070  and width  1072  of the distal body  1018  in the relaxed state and preferably is parallel to the distal body longitudinal axis  1036 . The tether may also slightly stretch the distal portion  1048  during the re-sheathing process. The tether may be a suture or other thin material  1116  that has a proximal end attached to the distal body proximal junction  1038  and a distal end attached to the distal portion proximal junction  1106 , as shown in  FIG. 102 . Alternatively, the tether may be a segment of the pull wire  1016 , as shown in  FIGS. 103-105 , in which case the tether may be comprised of stainless steel or nitinol for example. If the tether is conductive, a positive or negative charge (a current) may be propagated along the tether to the distal portion  1048  in order to interact with a blood clot captured in the distal body  1018 . (For example, depending on the charge propagated, the charge may assist in clotting or in attraction to a charged blood clot). If the tether is comprised of suture material, it may be proline or nylon and nonabsorbable for example and may be size 4-0 to size 1-0. If the tether is a segment of the pull wire  1016 , it may have an outer diameter of 0.002 inches to about 0.010 inches for example.  FIG. 103  illustrates a particular embodiment in which a segment of the tether is in the form of a helical coil/coil spring  1200 . The helical coil  1200  has a coil length generally parallel to the distal body length  1034 , the helical coil  1200  has an expanded/elongated state in which the helical coil  1200  has a first length and a relaxed state in which the helical coil  1200  has a second length, the first length greater than the second length. In other words, the helical coil  1200  may stretch as illustrated by the arrows in  FIG. 103  if tension is exerted on the tether in an effort to avoid damage to the tether. The helical coil  1200  is preferably adjacent to the distal portion proximal junction  1106 . In  FIG. 103 , the helical coil  1200  is a radiopaque stretch coil soldered at the proximal end to the pull wire  1016  and epoxied at the distal end to the distal portion proximal junction  1106 . The point of solder is denoted by numeral  1202 . 
     It will be understood that the dimensions provided are merely exemplary. It will also be appreciated that distal portion  1048  has a reduced height and width as compared to the proximal portion  1042  in the relaxed state in the illustrations of  FIGS. 102 and 104 . It will be appreciated that  FIGS. 102-104  show the proximal end of the distal portion  1048  as being closed, as the proximal ends  1086  of the woven linear strands  1058  converge at and are attached to the distal portion proximal junction  1106 . The convergence, which is also shown in  FIGS. 100-101 , is thought to prevent the distal portion woven linear strands  1058  from unraveling. 
     Given that, in  FIGS. 96-105 , the distal portion  1048  is fully located within the proximal portion interior  1052 , the distal portion  1048  is also referred to herein as the “distal body inner body” and the proximal portion  1042  is also referred to herein as the “distal body outer body” to more accurately reflect the fact that the woven linear strands  1058  are located within the basket memory metal strips  1046  of the proximal portion interior  1052 . Optionally, as demonstrated in  FIGS. 96 and 101 , at least some the woven linear strands  1058  contact the interior surface  1110  of at least some of the basket memory metal strips  1046  in the relaxed state. For example, a segment of all the woven linear strands  1058  may contact the interior surface  1110  of at least some of the basket memory metal strip  1046  in the relaxed state, as shown in  FIGS. 96 and 101 . 
     In some of the embodiment of  FIGS. 90-105 , the proximal ends  1086  of the woven linear strands  1058  may be free; however, it is believed that they will not damage the vessel  1100  because they are located in the proximal portion/distal body outer body interior  1052 . 
     As shown in  FIGS. 90-105 , the distal portion/distal body inner body  1048  is located adjacent (i.e., at or near the distal end  1064  of the distal basket  1040 ). In some embodiments, i.e.,  FIGS. 90-95 , at least a segment  1054  of the distal portion/distal body inner body  1048  is located distal to the proximal portion  1042 . 
     More particularly, as shown in  FIGS. 90-105 , the present disclosure further provides a system  1010  for removing objects from an interior lumen  1100  of an animal. The system  1010  may include a pull wire  1016  having a proximal end  1012  and a distal end  1014 , as previously described. 
     The system  1010  may further include a distal body  1018  attached to the pull wire  1016 , the distal body  1018  comprising a distal body perimeter  1020  separating a distal body interior  1022  from a distal body exterior  1024 , a proximal end  1026  having a proximal end center  1028 , a distal end  1030  having distal end center  1032 , a distal body length  1034  extending from the proximal end  1026  to the distal end  1030 , a longitudinal axis  1036  extending through the proximal end center  1028  and the distal end center  1032  and parallel to the distal body length  1034 , and a proximal junction  1038  forming the proximal end of the distal body  1026 . 
     The distal body  1018  may further include a proximal portion/distal body outer body  1042  comprising a basket  1040  comprised of a plurality of cells  1044  spaced about the distal body perimeter (e.g., circumference)  1020  and formed by a plurality of basket memory metal strips  1046  and a distal portion/distal body inner body  1048  connected to the proximal portion/distal body outer body  1042  at one or more connection points  1050 , the proximal portion/distal body outer body  1042  comprising a proximal portion/distal body outer body interior  1052 . The distal portion/distal body inner body  1048  is preferably located at the distal end  1064  of the basket  1040  and may or may not have at least a segment  1054  distal to the proximal portion  1042 . The distal portion/distal body inner body  1048  may be comprised of a plurality of distal braided mesh openings  1056  formed by a plurality of woven linear strands  1058 . The system may further include a distal body distal junction  1060  comprising a proximal end  1062 . The proximal end  1062  of the distal body distal junction  1060  may form a distal end  1064  of the basket  1040 . The distal portion/distal body inner body  1048  may have a perimeter  1066  and each woven linear strand  1058  may rotate about the distal portion/distal body inner body perimeter  1066  relative to the distal body longitudinal axis  1036  a plurality of times in a helical fashion. The helical rotation is best seen in  FIGS. 91-101 . In some embodiments, at least some of the distal braided mesh openings  1056  are distal to the cells  1044  as shown in  FIGS. 90-95 . The basket  1040  may comprise a basket interior  1068 . The distal body  1018  may have a relaxed state wherein the distal body  1018  has a first height  1070  and a first width  1072 , and a collapsed state wherein the distal body  1018  has a second height  1070  and a second width  1072 , the second height less than the first height, the second width less than the first width. 
     The system may further include a catheter  1074 , as previously described, having an interior  1076 , a proximal end  1078  leading to the interior  1076  and a distal end  1080  leading to the interior  1076 , the catheter  1074  comprised of a biocompatible material and configured to envelope the distal body  1018  when the distal body  1018  is in the collapsed state. Optionally, in the relaxed state, the median surface area of the cells  1044  is larger than the median surface area of the distal braided mesh openings  1056 . In other words, the average surface area of the cells  1044  is preferably greater (preferably substantially greater) than the average surface area of the distal mesh openings  1056  in the relaxed state, as shown in  FIGS. 90-91, 94, 96 and 101 . Optionally, in the relaxed state, the median radial force of the distal portion/distal body inner body  1048  is substantially less than the median radial force of the proximal portion/distal body outer body  1042  (e.g., 25% or less of the radial force of the proximal portion/distal body outer body  1042 ), it being understood that the radial force of the proximal portion/distal body outer body  1042  may vary along its length due to the free distal crowns  1096 , which may create enlarged cells  1098  as previously described. 
     Optionally, the radial force of the proximal portion/distal body outer body  1042  through its connection to the distal portion/distal body inner body  1048  at the connection point(s)  1050  is configured to cause the distal portion/distal body inner body  1048  to move to the relaxed state when the proximal portion/distal body outer body  1042  moves from the collapsed state to the relaxed state. The aforementioned phenomena is not present in  FIGS. 96-101 , where the sole connection point  150  of the distal portion/distal body inner body  1048  and the proximal portion/distal body outer body  1042  is the distal body distal junction  1060 . 
     Optionally, the proximal portion/distal body outer body  1042  and the distal portion/distal body inner body  1048  each have a length generally parallel to the distal body length  1034 , the proximal portion/distal body outer body  1042  and distal portion/distal body inner body  1048  lengths configured to elongate upon moving from the relaxed state to the collapsed state. Optionally, upon moving from the relaxed state to the collapsed state, the length of the distal portion/distal body inner body  1048  is configured to elongate a greater percentage as compared to the elongation of the proximal portion/distal body outer body  1042  as shown by comparing  FIG. 99  with  FIG. 101 , by comparing  FIG. 92  with  FIG. 91 , by comparing  FIG. 95  with  FIG. 94 , and by comparing  FIG. 97  with  FIG. 96 . Optionally, the woven linear strands  1058  rotate about the distal body distal portion/inner body perimeter  1066  relative to the distal body longitudinal axis  1036  a fewer number of times per unit of distance/length in the collapsed state as compared to the relaxed state, similar to what is seen when stretching a phone cord. 
     Optionally, in the relaxed state, the proximal portion/distal body outer body  1042 , but not the distal portion/distal body inner body  1048 , is configured to alter the shape of a curved intracranial artery, allowing the distal portion/distal body inner body  1048  to be used in tortuous vessels  1110  as shown in  FIG. 93 . Optionally, in the relaxed state, the distal portion/distal body inner body  1048  is more flexible than the proximal portion/distal body outer body  1042 , again allowing the distal portion/distal body inner body  1048  to be used in tortuous vessels  1110  as shown in  FIG. 93 . Optionally, the woven linear strands  1058  are comprised of a biocompatible material such as suture, a metallic material, Dacron, Teflon or vascular graft material. The woven linear strands  1058  may be comprised of a memory metal. In some embodiments, the woven linear strands  1058  are braided filaments that have the same diameter. In some embodiments, the woven linear strands  1058  are comprised of a material similar to the PIPELINE embolization device (ev3, Plymouth, Minn.), which is a flow diverter and is said to be comprised of a 75% cobalt chromium 25% platinum tungsten bimetallic design, or the SPIDER FX embolic protection device (also made by ev3). Similar devices are made by other companies. 
     Optionally, the distal portion/distal body inner body  1048  in the relaxed state comprises a tapered region in which the distal body height  1070  and width  1072  decrease as the woven linear strands  1058  approach the distal body distal junction  1060  as shown in  FIGS. 96 and 101-104 . Optionally, in the relaxed state, the basket interior  1068  is substantially hollow. 
     Optionally, the proximal portion  1042  comprises a distal end comprising between two and four basket memory metal strip distal ends  1082  and further wherein each woven linear strand  1058  comprises a proximal end  1086  attached to a basket memory metal strip distal end  1082 , as shown in  FIGS. 90-92 . Optionally, the distal portion/distal body inner body  1048  comprises at least two woven linear strands  1058  attached to each basket memory metal strip distal end  1082 . Optionally, in the relaxed state, the basket memory metal strips  1046  of the proximal portion/distal body outer body  1042  comprises an interior surface  1110  facing the distal body interior  1022  and the distal portion/distal body inner body  1048  comprises an outer/exterior surface facing and connected to the basket memory metal strips interior surface  1046 , and further wherein at least a segment of the distal portion/distal body inner body  1048  is interior to the proximal portion/distal body outer body  1042 , as shown in  FIGS. 94 and 95 . Optionally, each woven linear strand  1058  comprises a free proximal end  1086  and further wherein all free proximal ends  1086  of the woven linear strands  1058  are located in the proximal portion/distal body outer body interior  1052 , as shown in  FIGS. 94-101 . Optionally, the distal portion/distal body inner body  1048  is configured to elongate proximally and distally relative to the proximal portion/distal body outer body  1048  and the plurality of connection points  1050  upon moving from the relaxed state to the collapsed state, as shown in  FIG. 95 . 
     Optionally, the distal portion/distal body inner body  1048  is attached to the proximal portion/distal body outer body  1042  by at least two connection points  1050 , and further wherein said at least two connection points  1050  are located a slightly different distance from the proximal junction  1038  in the relaxed state. Optionally, said at least two connection points  1050  are located a slightly different distance from the proximal junction  1038  in the collapsed state. In other words, the connection points  1050  may be staggered slightly in the relaxed and collapsed states to aid collapsing of the distal body  1018 . 
     Optionally, a plurality of woven linear strand proximal ends  1088  are connected to each basket memory metal strip distal end  1082 . 
     Optionally, in the relaxed state, the distal portion/distal body inner body  1048  impedes blood flow to a greater extent than the proximal portion/distal body outer body  1042  when the proximal portion/distal body outer body  1042  and the distal portion/distal body inner body  1048  are placed in a blood vessel  1100 . 
     Optionally, the distal portion/distal body inner body  1048  is configured to reduce blood flow by at least 25% (preferably at least 50%) when the distal portion/distal body inner body  1048  is placed in a blood vessel  1100 , which may obviate the need for a suction catheter. 
     Optionally, the distal portion/distal body inner body  1048  is radiopaque. 
     Optionally, the proximal portion/distal body outer body  1042  of the distal body  1018  further comprises a plurality of proximal strips  1090 , each proximal strip  1090  having a distal end  1092  attached to a cell  1044  (more particularly a proximal crown of a cell  1044 ) and a proximal end  1094 , the proximal ends  1094  of the proximal strips  1090  converging at the proximal junction  1038 . Preferably, in the relaxed state, the length of the distal portion/distal body inner body  1048  is no more than 33% of the length of the proximal portion/distal body outer body  1042  (e.g., the length of the distal portion/distal body inner body  1048  may be about 2% to about 33% of the length of the proximal portion/distal body outer body  1042 ). 
     Optionally, in the relaxed state, as previously described, the proximal portion/distal body outer body may include offset free distal crowns  1096  with x-ray markers and offset enlarged cells  1098 . More particularly, the proximal portion/distal body outer body  1042  may comprise a first pair of distal crowns  1096  not attached to another cell of the basket  1040  and pointing generally in the distal direction, the distal crowns  1096  in the first pair of distal crowns  1096  located approximately the same distance from the proximal junction  1038  and between 150 degrees and 180 degrees relative to each other, and further wherein the basket  1040  further comprises a second pair of distal crowns  1096  not attached to another cell of the basket  1040  and pointing generally in the distal direction, the second pair of distal crowns  1096  located distally relative to the first pair of distal crowns  1096 , each of the distal crowns  1096  in the second pair of distal crowns  1096  located between 60 degrees and 90 degrees relative to a distal crown  1096  in the first pair of distal crowns  1096 , the distal crowns  1096  in the second pair of distal crowns  1096  located approximately the same distance from the distal body proximal junction  1038 , each of the distal crowns  1096  forming a portion of a cell  1044 . Optionally, each distal crown  1096  in the first and second pair of distal crowns  1096  forms part of a different enlarged cell/drop zone  1098 , each enlarged cell/drop one  1098  having a center and the centers of the enlarged cells  1098  of the first pair of distal crowns  1096  located approximately 180 degrees relative to each other (e.g., between 150 and 180 degrees) and approximately 90 degrees (e.g., between 60 and 90 degrees) relative to the centers of the enlarged cells/drop zones  1098  of the second pair of distal crowns  1096 . Optionally, the surface area of the enlarged cells/drop zones  1098  in the relaxed state is greater than the surface area of the other cells  1044  of the basket  1040 . Optionally, the enlarged cells/drop zones  1098  are configured to allow a thrombus to pass therethrough and into the basket interior  1068 . The distal crowns  1096  may include x-ray markers as previously described. 
     The proximal portion/distal body outer body  1042  differs from the distal portion/distal body inner body  1048  in several physical characteristics. For example, the proximal portion/distal body outer body  1042  is preferably prepared by using a laser to cut a single memory metal tube similar to the embodiments of  FIGS. 11-20 , for example (e.g., as shown in  FIGS. 1A, 1B   66 A and  66 B); whereas the distal portion/distal body inner body  1048  is preferably prepared from woven linear strands  1058 . In addition, the woven linear strands  1058  preferably slide relative to each other, whereas the basket memory metal strips  1046  of the proximal portion/distal body outer body  1042  meet at fixed nodes (crowns). In addition, the woven linear strands  1058  may be cylindrical in shape, whereas the basket memory metal strips  1046  may be trapezoidal in shape, and the width/diameter of the woven linear strands  1058  may be substantially smaller (e.g., five times or ten times smaller) than the maximum width of the basket memory metal strips  1046 .  FIG. 105  illustrates coupling of the proximal strip proximal ends  1094  using a coil comprising a proximal coil  1120  and a distal coil  1122  separated by a gap  1124 , similar to  FIGS. 76A-G ,  77  and  88 .  FIG. 105  also illustrates rotation of the proximal strips  1090 . 
     The system  1010  may be used method of removing a blood clot from a blood vessel  1100  of an animal, the method comprising the steps of: a) providing the system  1010 ; b) positioning the system  1010  in the blood vessel  1100 ; c) deploying the distal body  1018  from the distal end  1080  of the catheter  1074 ; d) allowing the height  1070  and width  1072  of the distal body  1018  to increase; e) moving the blood clot into the basket interior  1068 ; and f) moving the distal body  1018  (and captured blood clot) proximally out of the blood vessel  1100 . 
     Optionally, the method further includes applying contrast dye proximally and distally to the blood clot. 
     The embodiments of  FIGS. 90-105  may include a lead wire  286  as described previously. The lead wire  286  may extend from the distal end  1030  of the distal body  1018  and the distal body distal junction  1060  as shown in  FIG. 106A . Alternatively, the distal body distal junction  1060  may be elongated, as shown in  FIG. 103 , which depicts the distal body distal junction  1060  as an elongated coil to prevent damage to the vessel. 
     The Embodiments of  FIGS. 106-113   
       FIGS. 106-113  illustrate how an active agent  1128  can be used with the embodiments of  FIG. 90-105 . The active agent  1128  may be a pharmaceutical or biologic that is configured to dissolve in the blood vessel  1100  and has therapeutic efficacy in the case of an ischemic stroke. For example, the active agent  1128  may be a reloytic (clot dissolving agent) such as tissue plasminogen activator (TPA), abciximab or urokinase for example. The active agent  1128  may also be an reo-adhesive agent to allow the woven linear strands  1058  to swell when contracting blood to further reduce porosity of the distal body inner body  1048 . The active agent  1128  may also be a neuroprotective agent such as minocycline. The term active agent  1128  includes those now known and later developed. 
     More particularly,  FIG. 106  illustrates active agent  1128  that coats the woven linear strands  1058 . In further detail, the distal body inner body  1048  has an increased surface area due to the number of woven linear strands  1058 . For example, in an exemplary embodiment, the distal body inner body  1048  is comprised of between thirty six and sixty woven linear strands  1058 . This increased surface area allows for a high concentration of active agent  1128  per unit length. The location of the active agent  1128  at the distal body inner body  1048  may have several advantages including but not limited to 1) run off of active agent  1128  at the distal end  1030  of the distal body  1018  into stroke territory where ischemia exists; 2) to prevent formation of new clot on woven linear strands  1058  during deployment and retrieval; 3) to increase adherence/stickiness of the distal body inner body  1048  to trap/adhere to the clot  1126 ; and 4) so that the active agent  1128  is located in the distal capture portion of the distal body  1018 . Though not shown, the distal body  1018  of  FIG. 106  may include a tether as previously described. 
       FIG. 107  illustrates use of the system of  FIG. 106  in a blood vessel  1100 . As shown in  FIG. 107 , the main blood clot  1126  causing the ischemia is captured by the distal body outer body  1042 . The active agent  1128 , which may be a reolytic agent, may be used to dissolve the secondary clot/distal emboli  1127 . 
       FIG. 108  illustrates active agent  1128  that are located in the distal body inner body interior  1130 . More particularly, the active agent  1128  may in the form of particles that are trapped in the distal body inner body interior  1130  by the woven linear strands  1058 . Each distal braided mesh opening  1056  may have a width of less than 100 microns and the D90 particle size diameter/width of the active agent  1128  (prior to dissolving) may be larger than 200 microns for example so the particles are trapped in the distal body inner body interior  1130 . The particles may then slowly dissolve in the presence of blood flow through the distal portion of the distal body  1018  over a period of minutes before dissolving to a size that allows the dissolved particles to flow to the blood vessels  1110  within the stroke territory where they completely dissolve. As the distal body inner body  1048  is preferably tapered at its proximal end  1112  and distal end  1114  (e.g., in the shape of an American football), the distal braided mesh openings  1056  may be exponentially smaller at the distal body inner body proximal end  1112  and distal body inner body distal end  1114  than the distal braided mesh openings  1056  along the middle portion of the distal body inner body  1132 .  FIG. 108  shows the particles of active agent  1128  congregating at the distal body inner body distal end  1114  where the width of the distal braided mesh openings  1056  is significantly less than 100 microns. Though not shown, the distal body  1018  of  FIG. 108  may include a tether as previously described. 
       FIG. 109  shows the distal body  1018  in the collapsed state with drug particles distributed evenly in nearly a single file line. 
       FIG. 110  illustrates electrolysis to release the active agent  1128  from the distal body inner body interior  1130 . (A similar method may be used to release the active agent coating of  FIG. 106 ). For example, a positive or negative charge may be propagated along the pull wire  1016  to cause elution of the active agent  1128  due to the presence of the positive or negative charge. The system may take advantage of the “floating”/middle portion of the distal body inner body  1132  allowing build up of selective charge without grounding on the wall of the blood vessel  1100 . 
       FIG. 111  illustrates an embodiment where the pull wire  1016  is in the form of a catheter that may be used to deliver the active agent  1128 . For sake of labelling and differentiating from the previous catheter  1074 , the pull wire  1016  that is in the form of a catheter and used to deliver the active agent  1128  is labelled with the numeral  1016  and is called the active agent delivery catheter. The active agent delivery catheter  1016  may have an open proximal end  1134  for receiving the active agent  1128  and an open distal end  1136  for delivering the active agent  1128 . The active agent delivery catheter  1016  may be attached to the distal body  1018  at at least the distal body proximal junction  1038  and may be a braided design and proximally stiff with a distal progression of flexibility matching a typical core-coil delivery wire. The catheter distal end  1136  may be positioned at the distal body proximal junction  1038  (not shown), in the basket interior  1068  proximal to the distal body inner body  1048  (not shown), within the distal body inner body interior  1130  (the embodiment shown in  FIG. 111 ), or at the distal body distal junction  1060  (not shown), depending on where the user desires to deliver the active agent  1128 . The proximal strips  1090  may be mounted within the wall  1138  of the active agent delivery catheter  1016 , as shown in  FIGS. 112-113 , so as not to interfere with the delivery of the active agent  1128 . The active agent delivery catheter  1016  may be wider at the proximal end  1134  as shown in  FIG. 111  and reinforced with nitinol or other support material for pushability. The active agent delivery catheter  1016  may be no wider than 0.027 inches so that the active agent delivery catheter  1016  may be delivered through a standard microcatheter  1074 . If desired the active agent delivery catheter  1016  may be perforated to allow delivery of the active agent  1128  along the distal body length  1034 . 
     The embodiments of  FIGS. 106-113  may include a lead wire  286 , as shown in  FIG. 106A , or an elongated distal body distal junction  1060 , as described previously. 
     The Embodiments of  FIGS. 114-116   
       FIGS. 114-116  illustrate embodiments similar to  FIGS. 106-103  in which the pull wire is in the form of an active agent delivery catheter. As shown in  FIG. 114  (where a distal body distal portion is not present) and  FIG. 115  (where a distal body distal portion  1048  is present), the system may be used with or without a distal body distal portion  1048 .  FIGS. 116 and 117  illustrate use of a braided active agent delivery catheter in which the braided strips  1204  of the active agent delivery catheter wrap around the tube  1205  and are soldered at location  1208  to the proximal strips  1090 . It will also be appreciated that the braided active agent delivery catheter serves as the proximal junction  1038  in  FIGS. 116 and 117 . In the embodiment of  FIGS. 116-117 , though the distal body is not shown, the distal body may be in the form of any distal body illustrated herein, i.e., in  FIGS. 1-119 . For example, in one embodiment, the distal body is in the form shown in  FIG. 114  in which the distal body  1018  only includes the distal body proximal portion  1042 . Alternatively, the distal body  1018  may include both the distal body distal portion and the distal body proximal portion  1048 , as shown in  FIG. 115 . The distal body  1018  may include any of the features described herein, including without limitation free distal crowns  1096 , no free proximal crowns, enlarged cells  1098 , leader wires  286 , intersecting proximal strips  1090 , and distal junction  1060  for example. As an alternative, the braided active agent delivery catheter may serve only for the surgeon to push and pull the distal body  1018  (i.e., only serve as the pull wire  1016 ), if delivery of an active agent through the braided active agent delivery catheter is not desired by the user. 
     The Embodiments of  FIGS. 118-122   
       FIGS. 118-119  show embodiments in which the distal body distal portion  1048  is in the form a film with small openings  1206  (e.g., having a median size of less than about 250 microns, more preferably between 1-200 microns when the distal body  1018  is in the relaxed state) for example instead of woven linear strands  1058 . The openings  1206 , also referred to as pores in the art, are not drawn to scale in  FIGS. 118-119 . The openings  1206  may or may not be equally spaced and sized. Without being bound any particular theory, the distal body  1018  is designed to allow a thrombus to move through the enlarged cells  1098  and fall into the basket interior  1068 , and the film traps the thrombus from escaping distally. In other words, the small openings  1206  are designed so that the thrombus entering the basket interior  1068  does not escape through the small openings  1206 . The distal body distal portion  1048  may in the form of a cone with an open generally circular proximal end  1208  and an apex (which is formed by the distal body distal portion  1048  terminating at the distal junction  1060  opposite the open generally circular proximal end  1208 ) as shown in  FIG. 119 , in which case the sole connection  1050  of the distal body distal portion  1048  to the distal body proximal portion  1042  may be the distal junction  1060 . Alternatively, the distal body distal portion  1048  may be attached to the distal body proximal portion  1042  at multiple connections  1050  as shown in  FIGS. 118A and 118B . In both cases, the distal body distal portion  1048  is preferably located inside the distal body proximal portion  1042 . Optionally, the film is comprised of polytetrafluoroethylene. Alternatively, the film may be comprised of silicone, polyurethane, co-polymers, or another polymeric material. Preferably, the film is between about 5 microns to about 50 microns in thickness, however, it will be understood that such dimension is exemplary. 
       FIGS. 120-122  illustrate an embodiment to  FIGS. 118-119  except that the film is impermeable (the impermeable film is labelled with the numeral  1210 ). By impermeable, it is meant that the impermeable film  1210  is impermeable to human red blood cells—i.e., human red blood cells are unable to pass through the impermeable film  1210 . Optionally, if an impermeable film  1210  is used, a gap  1212  may be present, for example, between the impermeable film  1210  and the distal body distal junction  1060  (as shown in  FIG. 121 ) or between the impermeable film  1210  and the basket memory metal strips  1046  (as shown in  FIG. 122 ), which allows human red blood cells located in the distal body interior  1022  to move distally through the gap  1212  and distally, as illustrated by the arrows in  FIGS. 121-122 . (It will be understood that blood flows distally through the distal body  1018 ). The size of the gap  1212  may be for example about 100 to about 1,000 microns. Without being bound by any particular theory, it is believed that because the gap  1212  is preferably small, the blood flows through the gap  1212  quickly due to Bernoulli&#39;s principle, which in turn causes the blood to flow faster upstream from the gap  1212 , aiding the clot in entering the enlarged cells  1098  and into the distal body interior  1022 . The impermeable film  1210  may be made of the same material, including the thickness, as the film of  FIGS. 118-119 , given that forming the openings  1206  is usually a secondary step after the film is made. As shown in  FIGS. 120-122 , the memory metal strips  1046  form a plurality of cells  1044  that make up a lattice. In the example of the  FIGS. 120-122 , the lattice may be in the form of a basket  1040  with free distal crowns  1096  that form enlarged cells  1098  to allow a blood clot to pass therethrough and into the distal body interior  1022  (similar to  FIGS. 118-119  and  FIGS. 11-20 , for example). For example, in the illustrated embodiments of  FIGS. 118-122 , the basket  1040  includes a first pair of free distal crowns  1096  that are located between 150 and 180 degrees apart and a second pair of free distal crowns  1096  that are located between 60 to 90 degrees relative to a distal crown of the first pair of free distal crowns  1096 . The first pair of free distal crowns  1096  may form a first pair of enlarged cells  1098  (i.e., a first drop zone segment) located on opposite sides of the basket  1040 , and the second pair of free distal crowns may form a second pair of enlarged cells  1098  (i.e., a second drop zone segment) that is radially offset from the first pair of enlarged cells  1098 , as described with reference to  FIGS. 11-20  and elsewhere above. In other words, the middle zone  1216  may include a first drop zone segment, a second drop zone segment, and optionally cells  1044  distal to the first drop zone segment and proximal to the second drop zone segment. The basket  1040  may have a substantially closed distal end. Due to the enlarged cells  1098 , the distal body  1018  may have a non-uniform radial force along its length  1034 . As labelled in  FIG. 120B , the basket  1040  may include at least three zones: 1) a proximal zone  1214  with proximal cells  1044  that contact the wall of the vessel; 2) a middle zone  1216  with the enlarged cells  1098  and free distal crowns  1096 ; and 3) a distal zone  1218  that includes the film as well as additional cells  1044 . The middle zone  1216  is distal to the proximal zone  1214  and the distal zone  1218  is distal to the middle zone  1216 . The memory metal strips of the proximal zone  1214 , middle zone  1216  and distal zone  1218  may be integrally attached to each other and may be prepared by cutting memory metal from the same memory metal tube and shape setting the cut memory metal tube. In the relaxed state, each of the cells of the proximal zone  1214  may have a proximal crown that is attached to a memory metal strip (i.e., either basket memory metal strips  1046  or proximal strips  1090 ) as well as distal crown that is attached to a memory metal strip, and at least some of the cells of the middle zone  1216  may have a proximal crown that is attached to a memory metal strip and a free distal crown pointing generally in the distal direction. At least some of the cells of the distal zone  1218  may have a proximal crown that is attached to a memory metal strip and a distal crown that is attached to a memory metal strip, whereas other of the distal cells may end distally at the distal body distal junction  1060 . In other words, the proximal and distal zones  1214  and  1218  preferably include closed cells  1044  while the middle zone  1216  preferably has at least some large open cells  1098 . The median size of the openings  1206  if present may be smaller than the median size of the cells  1044  of both the proximal zone  1214  and distal zone  1218 . If present, the size of the gap  1212  may be smaller than the median size of the cells  1044  of the basket  1040 . The film preferably has no free edges so that it does not damage the blood vessel. The film may be located entirely distal to the enlarged cells  1098  and free distal crowns  1096 . The film may be configured to reduce blood flow when the distal body is placed in a human blood vessel. The film may have a length that is no greater than about 33% of the distal body length  1034 . The distal body  1018  may include any of the features described elsewhere above. For example, the distal body  1018  of  FIGS. 118-122  may taper as shown in  FIGS. 118-122  and as described for the other embodiments above including for example  FIGS. 11-20 . The distal body distal junction  1060  may be in the form of a tube as described for the other embodiments. The distal body  1018  may include a distal body proximal junction  1038 . The basket  1040  may include intersecting proximal strips  1090 . The basket  1040  preferably has no free crowns pointing in the proximal direction as described previously in order to prevent injury to the blood vessel. The film and cells  1044  may be distributed about the distal body perimeter  1020  so that the distal body interior  1022  is substantially hollow. The system  1010  may be deployed from a catheter  1074  as described above. The system  1010  may further include a leader wire  286 . The film may be elastomeric and is designed, like the basket  1040 , to collapse into the catheter  1074 . The film may contact the interior surface of at least some of the memory metal strips  1046 . Alternatively, the film may extend between the cells  1044  as shown in  FIGS. 118-122  for example. The film may be hydrophilic. The system  1010  may be used to remove a clot as described previously. 
     
       
         
           
               
             
               
                   
               
               
                 Part List for FIGS. 90-122 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 System 
                 1010 
               
               
                   
                 pull wire proximal end 
                 1012 
               
               
                   
                 pull wire distal end 
                 1014 
               
               
                   
                 pull wire 
                 1016 
               
               
                   
                 Pull wire wall 
                 1017 
               
               
                   
                 distal body 
                 1018 
               
               
                   
                 distal body perimeter 
                 1020 
               
               
                   
                 distal body interior 
                 1022 
               
               
                   
                 distal body exterior 
                 1024 
               
               
                   
                 proximal end 
                 1026 
               
               
                   
                 proximal end center 
                 1028 
               
               
                   
                 distal end 
                 1030 
               
               
                   
                 distal end center 
                 1032 
               
               
                   
                 distal body length 
                 1034 
               
               
                   
                 longitudinal axis 
                 1036 
               
               
                   
                 proximal junction 
                 1038 
               
               
                   
                 Basket 
                 1040 
               
               
                   
                 proximal portion/distal body outer 
                 1042 
               
               
                   
                 body 
                   
               
               
                   
                 cells 
                 1044 
               
               
                   
                 basket memory metal strips 
                 1046 
               
               
                   
                 distal portion/distal body inner body 
                 1048 
               
               
                   
                 connection points 
                 1050 
               
               
                   
                 proximal portion/distal body outer 
                 1052 
               
               
                   
                 body interior 
                   
               
               
                   
                 distal segment 
                 1054 
               
               
                   
                 distal braided mesh openings 
                 1056 
               
               
                   
                 woven linear strands 
                 1058 
               
               
                   
                 distal junction 
                 1060 
               
               
                   
                 distal junction proximal end 
                 1062 
               
               
                   
                 basket distal end 
                 1064 
               
               
                   
                 distal portion perimeter 
                 1066 
               
               
                   
                 basket interior 
                 1068 
               
               
                   
                 distal body height 
                 1070 
               
               
                   
                 distal body width 
                 1072 
               
               
                   
                 Catheter 
                 1074 
               
               
                   
                 catheter interior 
                 1076 
               
               
                   
                 catheter proximal end 
                 1078 
               
               
                   
                 catheter distal end 
                 1080 
               
               
                   
                 basket memory metal strips distal end 
                 1082 
               
               
                   
                 proximal end of strand 
                 1086 
               
               
                   
                 proximal strip 
                 1090 
               
               
                   
                 proximal strip distal end 
                 1092 
               
               
                   
                 proximal strip proximal end 
                 1094 
               
               
                   
                 distal crowns 
                 1096 
               
               
                   
                 enlarged cells 
                 1098 
               
               
                   
                 vessel/lumen 
                 1100 
               
               
                   
                 distal elongation 
                 1102 
               
               
                   
                 proximal elongation 
                 1104 
               
               
                   
                 distal portion/distal body inner body 
                 1106 
               
               
                   
                 proximal junction 
                   
               
               
                   
                 distal end of strand 
                 1108 
               
               
                   
                 basket memory metal strip interior 
                 1110 
               
               
                   
                 surface 
                   
               
               
                   
                 distal portion/distal body inner body 
                 1112 
               
               
                   
                 proximal end 
                   
               
               
                   
                 distal portion/distal body inner body 
                 1114 
               
               
                   
                 distal end 
                   
               
               
                   
                 Suture tether 
                 1116 
               
               
                   
                 Proximal coil 
                 1120 
               
               
                   
                 Distal coil 
                 1122 
               
               
                   
                 Gap 
                 1124 
               
               
                   
                 Main Clot 
                 1126 
               
               
                   
                 Secondary clot/distal emboli 
                 1127 
               
               
                   
                 Active agent 
                 1128 
               
               
                   
                 distal portion/distal body inner body 
                 1130 
               
               
                   
                 interior 
                   
               
               
                   
                 distal portion/distal body inner body 
                 1132 
               
               
                   
                 middle portion 
                   
               
               
                   
                 Active agent delivery catheter open 
                 1134 
               
               
                   
                 proximal end 
                   
               
               
                   
                 Active agent delivery catheter open 
                 1136 
               
               
                   
                 distal end 
                   
               
               
                   
                 Active agent delivery catheter wall 
                 1138 
               
               
                   
                 Helical coil 
                 1200 
               
               
                   
                 Solder location 
                 1202 
               
               
                   
                 Catheter strip 
                 1204 
               
               
                   
                 Catheter tube 
                 1205 
               
               
                   
                 Film openings 
                 1206 
               
               
                   
                 Solder 
                 1208 
               
               
                   
                 Impermeable film 
                 1210 
               
               
                   
                 Gap 
                 1212 
               
               
                   
                 Proximal zone 
                 1214 
               
               
                   
                 Middle zone 
                 1216 
               
               
                   
                 Distal zone 
                 1218 
               
               
                   
               
            
           
         
       
     
     The Embodiments of  FIGS. 124-135   
       FIGS. 124-135  illustrate use of a distal body  1220  that uses an extra long pull wire  1230  so that secondary devices  1244  and  1246  may be inserted into the human over the pull wire  1230  while the distal body  1220  remains in the human. ( FIG. 123  is a comparative example that uses a normal length pull wire). In some embodiments, the distal body  1220  is in the form of a framework of memory metal strips, such as a basket. The distal body  1220  may be in the form of any distal body described herein above, known in the art or later developed. In some embodiments, the distal body  1220  is in the form of a stent retriever. Stent retrievers are well-known in the art and, include, for example, the SOLITAIRE Revascularization Device (Medtronic, Minneapolis Minn.), the TREVO Provue Retrieval System (Stryker, Kalamazoo, Mich.), and Applicant Legacy Venture LLC&#39;s own NEVA line of thrombectomy devices (Legacy Ventures LLC dba Vesalio, Nashville, Tenn.). The distal body  1220  need not be in the form of a stent retriever and need not be a thrombectomy device. However, stent retrievers and thrombectomy devices are the preferred embodiment. 
     More particularly, the systems of  FIGS. 124-135  may include a pull wire  1230  having a proximal end  1232 , a distal end  1234  and a length extending from the proximal end  1232  to the distal end  1234  and a distal body  1220  attached to the pull wire  1230 . As mentioned before, the pull wire  1230  is preferably extra long and has a length of at least about 280 centimeters and a width of no more than about 0.014 inches (0.03556 cm) so that the pull wire  1230  may serve as the delivery vehicle of secondary devices (i.e., devices other than the distal body  1220 ), such as stents, balloon tubes  1244  and distal aspiration catheters  1246 , which may be delivered over the pull wire  1230 , as described in greater detail below. Optionally, the pull wire  1230  is comprised of a biocompatible metallic material. 
     The distal body  1220  may take a variety of forms as noted above. An example of some features of the distal body  1220  are noted below. It will be appreciated that the list is not comprehensive. The below features are not specifically illustrated in  FIGS. 124-135  because they are illustrated elsewhere herein. For example, the distal body  1220  may comprise a distal body interior, a distal body perimeter, a distal body proximal end, a distal body distal end, a distal body length extending from the distal body proximal end to the distal body distal end, and a distal body height and width perpendicular to the distal body length. More particularly, the distal body  1220  may be comprised of a framework comprised of a plurality of cells formed by a plurality of memory metal strips, as described in the prior embodiments herein. The distal body  1220  preferably has a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width. Optionally, some cells of the framework are larger than other cells of the framework and are configured to allow a blood clot to pass therethrough into the distal body interior. Optionally, the distal body distal end comprises a distal body distal junction, at least some of the memory metal strips are located at a distal end of the framework, each of the memory metal strips located at the distal end of the framework have a distal end, and wherein each of the distal ends of the memory metal strips located at the distal end of the framework converge at, and are attached to, the distal body distal junction. Optionally the distal body  1220 , in the relaxed state, comprises a tapered region in which the distal body height and the distal body width decrease as the distal ends of the memory metal strips located at the distal end of the framework approach the distal body distal junction, as previously described. Optionally, the distal body distal junction is in the form of a tube. Optionally, as previously described the distal body proximal end comprises a distal body proximal junction. Optionally, the distal body  1220  further comprises a plurality of proximal strips, each proximal strip having a distal end attached to a proximal crown of a cell and a proximal end, the proximal ends of the proximal strips converging at the distal body proximal junction. Optionally, the system further comprises a lead wire extending distally from the distal body distal junction. Optionally, the framework has a plurality of free crowns pointing generally in the distal direction and has no free crowns pointing generally in the proximal direction. Optionally, the plurality of cells of the framework are spaced about the distal body perimeter. Optionally, the distal body interior is substantially hollow. Optionally, the framework is in the form of a basket. Optionally, the system further comprises a catheter  1222  and  1226  having an interior, a proximal end leading to the interior and a distal end  1224  and  1228  leading to the interior, the catheter comprised of a biocompatible material and configured to envelope the distal body  1220  when the distal body  1220  is in the collapsed state. Optionally, the memory metal strips are located on a distal body perimeter and comprise an interior surface facing the distal body interior and an exterior surface opposite the interior surface. Optionally, in the relaxed state, the framework comprises a first pair of distal crowns not attached to another cell of the framework and pointing generally in the distal direction, the distal crowns in the first pair of distal crowns located approximately the same distance from the distal body proximal end and located between 150 degrees and 180 degrees relative to each other, and further wherein the framework further comprises a second pair of distal crowns not attached to another cell of the framework and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns, each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the distal body proximal end, each of the distal crowns forming a portion of a cell, wherein each distal crown in the first and second pair of distal crowns forms part of a different enlarged cell, each enlarged cell having a center, wherein the centers of the enlarged cells of the first pair of distal crowns are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns, wherein the enlarged cells are configured to allow a thrombus to pass therethrough and into the distal body interior. Optionally, as shown in  FIGS. 11-20  for example the distal body  1220  comprises an interior, a proximal end, a distal end, a distal body length extending from the proximal end to the distal end, a proximal junction forming the proximal end of the distal body, a plurality of proximal strips, a basket comprised of a plurality of open and closed cells formed by a plurality of basket strips, and a distal junction forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a distal end attached to a cell and a proximal end, the proximal ends of the proximal strips converging at the proximal junction, the distal body having a relaxed state wherein the distal body has a first height and a first width, and a collapsed state wherein the distal body has a second height and a second width, the second height less than the first height, the second width less than the first width, wherein, in the relaxed state, the basket comprises a plurality of proximal closed cells having a proximal crown attached to a proximal strip and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, wherein, in the relaxed state, the basket comprises a first drop zone segment distal to the plurality of proximal closed cells, the first drop zone segment comprising at least two closed cells located on opposite sides of the basket having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, and at least two cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the first drop zone segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior, wherein, in the relaxed state, the basket comprises a plurality of distal closed cells distal to the first drop zone segment and having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and attached to the distal junction, wherein, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction, wherein the distal body, in the relaxed state, comprises a distal tapered region in which the distal body height and width decrease as the basket approaches the distal junction, wherein the distal body, in the relaxed state comprises a proximal tapered region in which the distal body height and width decrease as the proximal strips approach the proximal junction. Optionally, in the relaxed state, the basket further comprises a second drop zone segment distal to the first drop zone segment, the second drop zone segment comprising at least two closed cells located on opposite sides of the basket having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction and at least two cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the second drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior. Optionally, the free distal crowns of the first drop zone segment are located between 60 degrees and 90 degrees relative to the free distal crowns of the second drop zone segment. Optionally, the basket interior is substantially hollow. In still further embodiments, the distal body  1220  may include an interior, a proximal end, a distal end, a distal body length extending from the proximal end to the distal end, a proximal junction forming the proximal end of the distal body, a plurality of proximal strips, a basket comprised of a plurality of open and closed cells formed by a plurality of basket strips, and a distal junction forming a distal end of the basket, the basket comprising a basket interior, each proximal strip having a distal end attached to a cell and a proximal end, the proximal ends of the proximal strips converging at the proximal junction, the distal body  1220  having a relaxed state wherein the distal body  1220  has a first height and a first width, and a collapsed state wherein the distal body  1220  has a second height and a second width, the second height less than the first height, the second width less than the first width, wherein, in the relaxed state, the basket comprises a plurality of proximal closed cells having a proximal crown attached to a proximal strip and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, wherein, in the relaxed state, the basket comprises a first drop zone segment distal to the plurality of proximal closed cells, the first drop zone segment comprising at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown attached to another cell of the basket and pointing generally in the distal direction, and at least two closed cells having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a free distal crown pointing generally in the distal direction, wherein, in the relaxed state, each free distal crown of the first drop segment forms part of an enlarged open cell configured to allow a thrombus to pass therethrough and into the basket interior, wherein, in the relaxed state, the basket comprises a plurality of distal closed cells distal to the first drop zone segment and having a proximal crown attached to another cell of the basket and pointing generally in the proximal direction and a distal crown pointing generally in the distal direction and attached to the distal junction by a distal strip having a proximal end attached to the distal crown and a distal end attached to the distal junction, wherein, in the relaxed state, the basket does not have any free crowns that point generally in the proximal direction, wherein each of the distal ends of the distal strips converge at the distal junction, wherein the distal body, in the relaxed state, comprises a distal tapered region in which the distal body height and width decrease as the distal strips approach the distal junction, wherein the distal body, in the relaxed state comprises a proximal tapered region in which the distal body height and width decrease as the proximal strips approach the proximal junction. 
     As noted above, the distal body  1220  is preferably a mechanical thrombectomy device that is preferably located at the distal end  1234  of the pull wire  1230  and the distal body  1230  is used to treat a blood clot in an intracranial artery  1242  in the human&#39;s brain. 
     More particularly, in some embodiments, the systems of  FIGS. 124-135  may be used to treat a human having a vascular system, a proximal stenosis or other obstruction  1238  in a proximal blood vessel  1240  and a clot  1248  in a distal blood vessel  1242 , the method comprising the steps of: a) inserting a guide (large) catheter  1222  into the human&#39;s vascular system, the guide catheter  1222  having an interior and an open distal end  1224  (see  FIG. 129 ); b) providing the system of  FIGS. 124-135  wherein the distal body  1220  is located inside an interior of a microcatheter  1226  (which preferably has a diameter less than the diameter of the guide catheter  1222  and an open distal end  1224 ); c) advancing the distal end  1228  of the microcatheter  1226  distally in the guide catheter interior and beyond the distal end  1224  of the guide catheter  1222 ; d) positioning the distal end  1228  of the microcatheter  1226  in the distal blood vessel  1242  (see  FIG. 130 ); e) deploying the distal body  1220  from the distal end  1228  of the microcatheter  1226 ; f) allowing the height and width of the distal body  1220  to increase (see  FIG. 131 —note deployment of the distal body  1220  alone will likely restore flow); g) moving the distal end  1228  of the microcatheter  1226  proximally out of the human&#39;s body while keeping the distal body  1220  in the distal blood vessel  1242  and the guide catheter  1222  in the human&#39;s body (see  FIG. 132 ); h) treating the proximal stenosis  1238  (see  FIGS. 133-134 ); i) moving the blood clot  1248  into the interior of the distal body  1220 ; and j) moving the distal body  1220  out of the human&#39;s body. It will be understood that the stenosis  1238  is labelled as proximal because the clot  1248  is located distal to the stenosis  1238  (e.g., the stenosis  1238  may be located in the carotdid and the clot  1248  may in an intracranial artery). Optionally, step h) comprises advancing at least one of a balloon tube  1244  and a stent along the pull wire  1230  and out the distal end  1224  of the guide catheter  1222  in the proximal blood vessel  1240  to treat the proximal stenosis  1238 . Optionally, step h) comprises advancing a balloon tube  1244  along the pull wire  1230  and out the distal end  1224  of the guide catheter  1222  in the proximal blood vessel  1240  and inflating the balloon tube  1244  to treat the proximal stenosis  1238 . Optionally, step i) comprises moving the distal body  1220  proximally to move the blood clot  1248  into the distal body interior. Optionally, the method further comprises applying contrast dye proximally and distally to the blood clot  1248 . 
     In still further embodiments, the present disclosure provides a method of removing a blood clot  1248  from a blood vessel  1242  in a human, the human having a vascular system, the method comprising the steps of: a) inserting a guide catheter  1222  into the human&#39;s vascular system; b) providing the system of  FIGS. 124-135  wherein the distal body  1220  is located inside an interior of a microcatheter  1226 ; c) advancing the distal end  1228  of the microcatheter  1226  distally in the guide catheter interior and beyond the distal end  1224  of the guide catheter  1222 ; d) positioning the distal end  1228  of the microcatheter  1226  in the blood vessel  1242 ; e) deploying the distal body  1220  from the microcatheter  1226 ; f) allowing the height and width of the distal body  1220  to increase (see  FIG. 124 —note deployment of the distal body  1220  alone will likely restore flow); g) moving the distal end  1228  of the microcatheter  1226  proximally out of the human&#39;s body while keeping the distal body  1220  in the blood vessel  1242  and the guide catheter  1222  in the human&#39;s body (see  FIGS. 125-126 ); h) advancing an aspiration catheter  1246  along the pull wire  1230  and out the distal end  1224  of the guide catheter  1222  to a location proximal to the distal body  1220  (see  FIG. 127 ); i) moving the blood clot  1248  into the interior of the distal body  1220 ; j) before, after or during step i), applying aspiration to the aspiration catheter  1246 ; and k) moving the distal body  1220  out of the human&#39;s body (see  FIG. 128 , which shows the distal body  1220  being moved proximally during the process of removing the distal body  1220  from the human&#39;s body). Due to the extra length of the pull wire  1230  the wire protrudes beyond microcatheter in  FIG. 125  for example, making control over the wire  1230  still possible. 
     In comparative example  FIG. 123 , the microcatheter  1226  may have a length of for about 135-150 centimeters and the pull wire  1230  may only have a length of about 180 centimeters. By contrast, the pull wire  1230  of  FIGS. 124-135  has a length of at least twice the length of the microcatheter  1226  (e.g., 2 times 135-150 centimeters) plus 10 centimeters, which would be in the range of 280-310 centimeters (cm) for example. However, other dimensions over 280 centimeters are possible. 
     
       
         
           
               
             
               
                   
               
               
                 Part List for FIGS. 124-135 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 Distal body 
                 1220 
               
               
                   
                 Guide catheter 
                 1222 
               
               
                   
                 Guide catheter distal end 
                 1224 
               
               
                   
                 Microcatheter 
                 1226 
               
               
                   
                 Microcatheter distal end 
                 1228 
               
               
                   
                 Pull wire 
                 1230 
               
               
                   
                 Pull wire proximal end 
                 1232 
               
               
                   
                 Pull wire distal end 
                 1234 
               
               
                   
                 Proximal stenosis or other obstruction 
                 1238 
               
               
                   
                 Proximal vessel 
                 1240 
               
               
                   
                 Intracranial artery 
                 1242 
               
               
                   
                 Balloon tube 
                 1244 
               
               
                   
                 Distal aspiration catheter 
                 1246 
               
               
                   
                 Clot 
                 1248 
               
               
                   
               
            
           
         
       
     
     The Embodiments of  FIGS. 136-144   
     With reference to  FIGS. 136-144 , in yet a further embodiment, the present disclosure provides a system  1250  for removing a blood clot  1330  from a human blood vessel  1252 . 
     Preferably, the system  1250  is deployed from a catheter, which although not shown, may have any of the characteristics described above with respect to  FIGS. 1-135 . In some embodiment, the system  1250  of  FIGS. 136-144 , includes a pull wire  1254  having a pull wire proximal end  1256 , a pull wire distal end  1258  and a pull wire length  1260  extending from the pull wire proximal end  1256  to the pull wire distal end  1258 . The pull wire  1254  may be similar to the pull wire of the previous embodiments of  FIGS. 1-135 . 
     The system  1250  of  FIGS. 136-144  may further include a proximal body  1262  designed to trap a blood clot  1330  proximally. The proximal body  1262  may include a proximal body interior  1266 , a proximal body perimeter  1268 , a proximal body proximal end  1270  comprising a proximal body proximal junction  1272  that may be connected to the pull wire  1254 , a proximal body distal end  1274  that is preferably open, a proximal body length  1276  extending from the proximal body proximal end  1270  to the proximal body distal end  1274 , and a proximal body height  1278  and width (not shown) perpendicular to the proximal body length  1276 . When it is said that the proximal body proximal junction  1272  may be “connected to” the pull wire  1254 , it will be understood that the language is designed to encompass but not be limited to the illustrated designs of  FIGS. 137-144  in which the proximal body proximal junction  1272  is in the form of a tube the interior of which receives a segment of the pull wire  1254 . The proximal body  1262 , more particularly, the proximal junction  1272  of the proximal body  1262  may be free floating (longitudinally) over a fixed distance  1264  of the pull wire  1254 . The proximal body  1262  may include a proximal body framework  1280  comprised of a plurality of proximal body cells  1282  formed by a plurality of proximal body memory metal strips  1284  as shown in  FIGS. 137-138 and 140-144 . The system  1250  may further include a distal body  1286  designed to trap a blood clot  1330  distally. The distal body  1286  may comprise a distal body interior  1288 , a distal body perimeter  1290 , a distal body proximal end  1292  comprising a distal body proximal junction  1294  that may be connected to the pull wire  1254 , a distal body distal end  1296 , a distal body length  1298  extending from the distal body proximal end  1292  to the distal body distal end  1296 , and a distal body height  1300  and width (not shown) perpendicular to the distal body length  1298 . When it is said that the proximal body proximal junction  1272  may be “connected to” the pull wire  1254 , it will be understood that the language is designed to encompass but not be limited to direct attachment or indirect attachment via an intermediary. Optionally, the proximal body  1262  and distal body  1286  are collapsible in the catheter and expand in the blood vessel  1252  as described with the previous embodiment—i.e., the proximal body  1262  has a relaxed state wherein the proximal body  1262  has a first height and a first width (shown in  FIGS. 137-138 and 140-144 ), and a collapsed state wherein the proximal body  1262  has a second height and a second width, the second height of the proximal body  1262  less than the first height of the proximal body  1262 , the second width of the proximal body  1262  less than the first width of the proximal body  1262 . Similarly, the distal body  1286  may have a relaxed state wherein the distal body  1286  has a first height and a first width, and a collapsed state wherein the distal body  1286  has a second height and a second width, the second height of the distal body  1286  less than the first height of the distal body  1286 , the second width of the distal body  1286  less than the first width of the distal body  1286 . Optionally, the distal body  1286  is configured to move between a deployed configuration (shown in  FIGS. 137, 140 and 143 ) in which the distal body proximal end  1292  is located a first distance  1308  distal relative to the proximal body proximal end  1270  and a retracted configuration (shown in  FIGS. 138, 141, 142, and 144 ) in which the distal body proximal end  1292  is located a second distance  1310  distal relative to the proximal body proximal end  1270 , the second distance less  1310  than the first distance  1308 . (Similarly, in the retracted configuration, the distal body distal end  1296  is preferably closer to the proximal body proximal end  1270  than in the deployed configuration. In other words, preferably, in moving from the deployed configuration to the retracted configuration, preferably, the entire distal body  1286  moves proximally, instead of stretching). Optionally, the pull wire distal end  1258  and the distal body  1286  are configured to move proximally a fixed distance toward the proximal body proximal end  1270  when the distal body  1286  moves from the deployed configuration to the retracted configuration. Preferably the proximal body  1262  does not move longitudinally (in the lengthwise direction) as the distal body  1286  moves from the deployed configuration to the retracted configuration. In an alternate design (not shown), the distal end  1274  may be in the form of a junction that is connected to the pull wire  1254  (instead of or in addition to the proximal body proximal junction  1272 ). However, such design is disadvantageous because the proximal body distal end  1274  is preferably open, as shown in  FIGS. 137-138 and 140-144 . 
     Two different designs of such systems  1250  are shown in the illustration. First, in the embodiment of  FIGS. 136-142 , the proximal body proximal junction  1272  is in the form of a short tube comprising a tube interior, the pull wire  1254  comprises a proximal bumper  1324  proximal to the proximal body proximal junction  1272 , a thin segment  1326  distal to the proximal bumper  1324 , and a distal bumper  1328  distal to the thin segment  1326 . (The short tube may be similar to the proximal hub  228  described previously with reference to  FIGS. 11-20  for example). Optionally, the thin segment  1326  is configured to pass through the tube interior of the proximal body proximal junction  1272  but the proximal bumper  1324  and the distal bumper  1328  are too large to pass through the tube interior of the proximal body proximal junction  1272  (e.g., the proximal body proximal junction inner diameter/width is less than the diameter/width of the proximal and distal bumpers  1324  and  1328 ). The “bumpers”  1324  and  1328  may be knots or other enlargements of the pull wire  1254  for example. In such an embodiment, the proximal body proximal junction  1272  is free floating a fixed distance  1264 , namely, the distance between the proximal bumper  1324  and the distal bumper  1328 . Optionally, the distal bumper  1326  forms part of the distal body proximal junction  1294 , as shown in  FIGS. 137-142 . Optionally the proximal bumper  1324  and distal bumper  1326  each comprise x-ray markers, as best illustrated in the x-ray view of  FIG. 139 . Optionally, the proximal body  1262  is free floating when the thin segment  1326  passes through the tube interior, pushing the proximal bumper  1324  against the proximal body proximal junction  1272  is configured to move the proximal body distally  1262 , pulling the distal bumper  1328  against the proximal body proximal junction  1272  is configured to move the proximal body  1262  proximally, pushing the pull wire  1254  distally is configured to move the distal body  1286  distally and pulling the pull wire  1254  proximally is configured to move the distal body  1286  proximally. Such a system  1250  may be used in a method of removing a blood clot  1330  from a blood vessel  1252  of an animal, the method comprising the steps of: a) providing the system  1250 ; b) pushing the proximal bumper  1324  against the proximal body proximal junction  1272  preferably within a catheter so that the system  1250  is positioned in the blood vessel  1252  with the proximal body proximal junction  1272  proximal to the blood clot  1330  and the distal body distal end  1296  distal to the blood clot  1330 ; c) deploying the proximal body  1262  and distal body  1286  from the catheter and allowing the height  1278  and  1300  and width of the proximal body  1262  and distal body  1286  to increase (as shown in  FIG. 140 ); d) pulling the pull wire  1254  proximally so that the thin segment  1326  of the pull wire  1254  moves proximally within the tube interior and the distal body  1286  moves from the deployed configuration to the retracted configuration (as shown in  FIG. 141 ); and e) pulling the pull wire  1254  proximally so that the distal bumper  1328  of the pull wire  1254  moves against the proximal body proximal junction  1272  so that the proximal body  1262 , the blood clot  1330  and the distal body  1286  move proximally out of the blood vessel  1252  (as shown in  FIG. 142 ). 
     In a second design, illustrated in  FIGS. 143-144 , the system  1250  further comprises a tube/coaxial sheath  1332  surrounding a segment of the pull wire  1254 , the tube  1332  comprising an interior comprising the segment of the pull wire  1254 , a tube proximal end  1334 , and a tube distal end  1336  attached to the proximal body proximal junction  1272 , and optionally the distal body  1286  and the distal end  1258  of the pull wire  1254  are configured to move proximally toward the proximal body proximal end  1270  and the tube  1332  when the distal body  1286  moves from the deployed configuration to the retracted configuration. In an exemplary embodiment, the tube  1336  is braided catheter. Optionally, as shown in  FIGS. 143-144 , the pull wire  1254  and the tube  1332  are each attached to a handle  1338 , the handle  1338  further comprising a moveable slide  1340 , and moving the moveable slide  1340  proximally is configured to move the distal body  1286  from the deployed configuration to the retracted configuration. Optionally, as shown in  FIGS. 143-144 , the handle  1338  further comprises a slot  1342 , and moving the moveable slide  1340  proximally by a distance  1344  within the slot  1342  is configured to move the distal body proximal junction  1272  the same distance (denoted by numeral  1346 ) toward the proximal body proximal junction  1294 . In such a design, the proximal body  1262  (and the tube  1332 ) are said to be free floating with respect to a segment of the pull wire  1254  because they preferably do not move when the pull wire  1254  is moved a certain distance proximally, namely, the distance  1344  that the moveable slide  1340  is moveable proximally within the slot  1342 . Such a system  1250  may be used in a method of removing a blood clot  1330  from a blood vessel  1252  of an animal the method comprising the steps of: a) providing the system  1250 ; b) positioning the system  1250  in the blood vessel  1252  preferably in a catheter so that the proximal body proximal junction  1272  is proximal to the blood clot  1330  and the distal body distal end  1296  is distal to the blood clot  1330 ; c) deploying the system  1250  from a catheter and allowing the height  1278  and  1300  and width of the proximal body  1262  and distal body  1286  to increase; d) moving the moveable slide  1340  (which may be in the form of a knob or other protrusion) proximally (e.g., with a surgeon&#39;s finger) to move the distal body  1286  from the deployed configuration to the retracted configuration (as shown in  FIG. 144 ); e) moving the proximal body  1262 , the blood clot  1330  and the distal body  1286  proximally out of the blood vessel  1252 . The tube  316  optionally has a length of at least 50 centimeters (cm), e.g., about 50 cm to about 300 cm, so that the coaxial sheath  316  can be moved by the surgeon outside of the patient&#39;s body. 
     The below optional features may be utilized in either design unless otherwise noted. For example, optionally, pulling the pull wire  1254  proximally is configured to move the distal body  1286  from the deployed configuration to the retracted configuration. Optionally, the proximal body interior  1266  and/or distal body interior  1288  are substantially hollow, as shown in  FIGS. 137-138 and 140-144 . Optionally, as shown in  FIGS. 137-138 and 140-144 , the proximal body  1262  and the distal body  1286  are in the form of baskets. Optionally, the proximal body  1262 , in the relaxed state, comprises a plurality of free distal crowns  1312  located at the distal end  1274  of the proximal body  1262  on the proximal body perimeter  1268 , the plurality of free distal crowns  1312  forming the proximal body open distal end  1274 , as shown in  FIGS. 137-138 and 140-144 . Optionally, at least some, preferably all, of the plurality of free distal crowns  1312  located at the distal end  1274  of the proximal body  1262  comprise an x-ray marker. Optionally, the proximal junction  1272  of the proximal body  1262  and the proximal junction  1294  of the distal body  1286  each are in the form of a tube. Optionally, in the relaxed state, the proximal body  1262  and the distal body  1286  do not have any free proximal crowns pointing generally in the proximal direction in order to prevent damage to the vessel  1252 . Optionally, when moving from the deployed configuration to the retracted configuration, the distal body  1286  moves between about 0.5 centimeters to about 2 centimeters toward the proximal body  1262 . Preferably, the movement of the distal body  1286  from the deployed configuration to the retracted configuration takes place in a straight blood vessel  1252 . Optionally, the distance between the proximal body distal end  1272  and the distal body proximal junction  1292  in the deployed configuration is sufficient to allow a clot  1330  to be located between the proximal body distal end  1272  and the distal body proximal junction  1292  (e.g., about 5 millimeters to about 25 millimeters), as shown in  FIG. 140 . 
     Optionally, the distal body  1286  may include the same features as described with distal bodies elsewhere herein (including  FIGS. 11-20 and 90-122 ). For example, as shown in  FIGS. 136-144 , some cells  1322  of the framework  1302  of the distal body  1286  are larger than other cells of the framework  1302  of the distal body  1286  and are configured to allow a blood clot  1330  to pass therethrough into the distal body interior  1288 . Optionally, as shown in  FIGS. 137-138 and 140-144 , the distal body distal end  1296  comprises a distal body distal junction  1316 , at least some of the memory metal strips  1306  are located at a distal end of the framework  1302  of the distal body  1286 , each of the memory metal strips  1306  located at the distal end of the framework  1302  of the distal body  1286  have a distal end, and each of the distal ends of the memory metal strips  1306  located at the distal end of the framework  1302  of the distal body  1286  converge at, and are attached to, the distal body distal junction  1316 . Optionally, the distal body  1286 , in the relaxed state, comprises a tapered region in which the distal body height  1300  and the distal body width decrease as the distal ends of the memory metal strips  1306  located at the distal end of the framework  1302  of the distal body  1286  approach the distal body distal junction  1316 . Optionally, the system  1250  further comprises a lead wire  1318  extending distally from the distal body distal junction  1316 . Optionally, the distal body  1286  further comprises a plurality of proximal strips  1348 , each distal body proximal strip  1348  having a distal end  1352  attached to a proximal crown  1354  of a cell  1304  of the distal body  1286  and a proximal end  1350 , the proximal ends  1350  of the proximal strips  1348  of the distal body  1286  converging at the distal body proximal junction  1294 . Similarly, optionally, the proximal body  1262  further comprises a plurality of proximal strips also labelled  1348 , each proximal body proximal strip  1348  having a distal end  1352  attached to a proximal crown  1354  of a cell of the proximal body  1262  and a proximal end  1350 , the proximal ends  1350  of the proximal strips  1348  of the proximal body  1262  converging at the proximal body proximal junction  1272 . Optionally, in the relaxed state, the framework  1302  of the distal body  1286  comprises a plurality of free distal crowns  1314  pointing generally in the distal direction, as seen in  FIGS. 143-144 , and does not have any free proximal crowns pointing generally in the proximal direction. The plurality of free distal crowns  1314  may include x-ray markers. Optionally, the plurality of cells  1304  of the framework  1302  of the distal body  1286  are spaced about the distal body perimeter  1290 . (Optionally, the plurality of cells  1282  of the framework  1280  of the proximal body  1262  are also spaced about the proximal body perimeter  1268 ). Optionally, though not shown, the distal body  1286  includes a plurality of woven linear strands, as previously described with reference to  FIGS. 90-122 . As previously described, such woven linear strands may, for example, create a distal body inner body located in the distal body interior  1288  and prevent captured clot  1330  from escaping out of the distal body distal end  1296 . As mentioned above, optionally, in the relaxed state, the distal body  1286  includes free distal crowns  1314  that generally point in the distal direction and optionally include x-ray markers, as previously described with reference to  FIGS. 11-20 and 90-122 . Optionally, in the relaxed state, the framework  1302  of the distal body  1286  comprises a first pair of distal crowns  1314  not attached to another cell  1304  of the framework  1302  and pointing generally in the distal direction, the distal crowns  1314  in the first pair of distal crowns located approximately the same distance from the distal body proximal end  1292  and located between 150 degrees and 180 degrees relative to each other, as seen in  FIGS. 143-144 . Optionally, though not shown, the framework  1302  of the distal body  1286  further comprises a second pair of distal crowns not attached to another cell of the framework  1302  and pointing generally in the distal direction, the second pair of distal crowns located distally relative to the first pair of distal crowns  1314 , each of the distal crowns in the second pair of distal crowns located between 60 degrees and 90 degrees relative to a distal crown  1314  in the first pair of distal crowns, the distal crowns in the second pair of distal crowns located approximately the same distance from the distal body proximal end  1292 , each of the distal crowns forming a portion of a different enlarged cell  1322  having a center. Optionally the centers of the enlarged cells  1322  of the first pair of distal crowns  1314  are between 150 degrees and 180 degrees relative to each other and between 60 degrees and 90 degrees relative to the centers of the enlarged cells of the second pair of distal crowns. Optionally, the enlarged cells  1322  are configured to allow a thrombus  1330  to pass therethrough and into the distal body interior  1288 . 
     Optionally, (though not shown) the system  1250  further comprises a catheter having an interior, a proximal end leading to the interior and a distal end leading to the interior, the catheter  1250  comprised of a biocompatible material and configured to envelop the distal body  1286  and the proximal body  1262  when the distal body  1286  and the proximal body  1262  are in the collapsed state. 
     Optionally, as shown in  FIGS. 137-138 and 140-144 , in the relaxed state, the proximal body proximal junction  1272  is located approximately in the center of the proximal body height  1278  and width and the distal body proximal junction  1294  and the distal body distal junction  1316  are located approximately in the center of the distal body height  1300  and width. Optionally, as shown in  FIGS. 137-138 and 140-144 , the proximal body height  1278 , the proximal body width and the distal body height  1300  and the distal body width in the relaxed state are substantially the same. 
     The Embodiments of  FIGS. 145-147   
       FIGS. 145-147  illustrate a system  1250 ′ for removing a blood clot  1330  from a human blood vessel  1252  that is similar to the embodiments shown in  FIGS. 136-144 . 
     The system  1250 ′ of  FIGS. 145-147  includes a distal body  1286  that may include one or more of the features discussed with respect to  FIGS. 1-144 . Alternatively, the distal body  1286  may be a stent-retriever commercially available from another manufacturer such as the TREVO or SOLITAIRE. 
     The system  1250 ′ of  FIGS. 145-147  further includes a pull wire  1256  attached to the distal body  1286 . The pull wire  1256  may include one or more of the features discussed with respect to  FIGS. 1-144 . In some embodiments, the pull wire  1256  is an extra long (exchange length) pull wire in which case the pull wire  1256  has a length of at least about 280 centimeters and the pull wire  1256  has a width of no more than about 0.014 inches, as previously described. 
     The system  1250 ′ of  FIGS. 145-147  further includes a proximal body  1262  that may include one or more of the features discussed with respect to  FIGS. 136-144 . In  FIGS. 145 and 146C , the proximal body  1262  is shown with a film  1370 , which is optional. The film  1370 , if included, may be impermeable or permeable to red blood cells as described previously. 
     Like  FIGS. 143-144 , the proximal body  1262  of the system  1250 ′ of  FIGS. 145-147  may be permanently attached to a distal end  1360  of a tube (designated in  FIGS. 145-147  as the inner tube  1356 ). However, unlike,  FIGS. 143-144 , the inner tube  1356  of  FIGS. 145-147  is not attached to a handle with a moveable slide but instead is itself grasped and manipulated by the surgeon. Preferably, the inner tube  1356  is flexible (in order to navigate tortuous blood vessels) and is long enough (e.g., at least 50 centimeters in length, e.g., between about 50 and 300 centimeters) so that the inner tube proximal end  1358  is located outside of the human&#39;s body when the distal body  1286  is located in an intracranial blood vessel  1252 . 
     The system of  FIGS. 145-147  further includes an outer tube  1362 , which serves as the delivery tube, for delivering the proximal body  1262  and inner tube  1356  to a blood vessel  1252 . The outer tube  1362  has a proximal end  1364  and a distal end  1366  and is flexible (in order to navigate tortuous blood vessels). 
     An exemplary method of use is shown in  FIGS. 146A-146C . The distal body  1286 , which is attached to a pull wire  1254 , is deployed from a distal end  1369  of a guide catheter  1368  distal to the blood clot  1330 . See  FIG. 146A . The surgeon then moves the outer tube  1362 , which contains the inner tube  1356  and the collapsed proximal body  1262 , through the same guide catheter  1368  distally over the pull wire  1254 . See  FIG. 146B . (Thus, the surgeon moves the outer tube  1362 , the inner tube  1356  and proximal body  1262  as a single unit distally over the pull wire  1254 ). The surgeon then moves the outer tube  1362  proximally to deploy the inner tube  1356  and proximal body  1262  out of the outer tube distal end  1366 . The proximal body  1262  moves to the relaxed state. See  FIG. 146C . The surgeon then moves the distal body  1286  proximally toward the proximal body  1262  while keeping the proximal body  1262  (and attached inner tube  1356 ) stationary to capture the clot  1330 . See  FIG. 146D . 
     It will be appreciated that, as with  FIGS. 136-144 , the system  1250 ′ of  FIGS. 145-147  includes a proximal body  1262  that is i) free floating over the pull wire  1254  and ii) moved by a tube (inner tube  1356 ), and a distal body  1286  that is attached to and moves with the pull wire  1254 . An advantage of the system  1250 ′ of  FIGS. 145-147  is that no handle or bumpers are needed, and the proximal body  1262  is deployed after the distal body  1286  is deployed, allowing the surgeon to use the proximal body  1262  as an optional, independently-deployed accessory to the distal body  1286 , e.g., in the case of a clot  1330  that is particularly difficult to remove. Also, the proximal body  1262  of  FIGS. 145-147  may be deployed well proximal to the distal body  1286 , e.g., the proximal body  1262  may be deployed in the carotid artery and the distal body  1286  may be deployed in a small intracranial blood vessel. As a result, in the relaxed state, the width and height  1278  of the proximal body  1262  (as measured at the maximum width and height of the proximal body  1262 ) may be greater (e.g., at least 0.5 millimeters greater) than the width and height  1300  of the distal body  1286  (as measured at the maximum width and height of the distal body  1286 ). 
     Exemplary relative lengths and positions of the pull wire  1254 , inner tube  1356 , outer tube  1362  and guide catheter  1368  are shown in  FIG. 147 . It will be observed that the length of the pull wire  1254  is greater than the length of the inner tube  1356  which is greater than the length of the outer tube  1362  which is greater than the length of the guide catheter  1368  to enable the surgeon to grasp and manipulate the pull wire  1254 , inner tube  1356 , outer tube  1362 , and guide catheter  1368  individually. As shown in  FIG. 147 , the guide catheter  1368  includes a proximal end  1371 . 
     It will be appreciated that the outer tube  1362  is attached to neither the distal body  1286  nor the proximal body  1262  and the outer tube  1362  is freely moveable toward and away from the proximal body proximal end  1270  and the distal body proximal junction  1294  and that movement of the outer tube  1362  over the proximal body  1262  is configured to move the proximal body  1262  from the relaxed state to the collapsed state. It will also be appreciated that pulling the pull wire  1254  proximally automatically moves the distal body  1286  but not the proximal body  1262  proximally (at least until distal body  1286  engages the proximal body  1262 ) since the pull wire  1254  is attached to the distal body  1286  but is not attached to the proximal body  1262 . It will also be appreciated that pushing the pull wire  1254  distally automatically moves the distal body  1286  but not the proximal body  1262  distally since the pull wire  1254  is attached to the distal body  1286  but is not attached to the proximal body  1262 . It will also be appreciated that pulling the inner tube  1356  proximally automatically moves the proximal body  1262  but not the distal body  1286  proximally since the inner tube  1356  is attached to the proximal body  1262  but is not attached the distal body  1286 . It will also be appreciated that pushing the inner tube  1356  distally automatically moves the proximal body  1262  but not the distal body  1286  distally since the inner tube  1356  is attached to the proximal body  1262  but is not attached the distal body  1286 . 
     The inner tube  1356  may be attached to the proximal body  1262  by any suitable method, e.g., welding or soldering, or the inner tube  1356  may be integral with the proximal body  1262 . For example, the inner tube  1356  may be a braided catheter and the braids may form the proximal body  1262 . 
     
       
         
           
               
             
               
                   
               
               
                 Part List for FIGS. 136-147 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 System 
                 1250 or 1250′ 
               
               
                   
                 Human blood vessel 
                 1252 
               
               
                   
                 Pull wire 
                 1254 
               
               
                   
                 Pull wire proximal end 
                 1256 
               
               
                   
                 Pull wire distal end 
                 1258 
               
               
                   
                 Pull wire length 
                 1260 
               
               
                   
                 Proximal body 
                 1262 
               
               
                   
                 Fixed distance 
                 1264 
               
               
                   
                 Proximal body interior 
                 1266 
               
               
                   
                 Proximal body perimeter 
                 1268 
               
               
                   
                 Proximal body proximal end 
                 1270 
               
               
                   
                 Proximal body proximal junction 
                 1272 
               
               
                   
                 Proximal body distal end 
                 1274 
               
               
                   
                 Proximal body length 
                 1276 
               
               
                   
                 Proximal body height 
                 1278 
               
               
                   
                 Proximal body framework 
                 1280 
               
               
                   
                 Proximal body cells 
                 1282 
               
               
                   
                 Proximal body memory metal strips 
                 1284 
               
               
                   
                 Distal body 
                 1286 
               
               
                   
                 Distal body interior 
                 1288 
               
               
                   
                 Distal body perimeter 
                 1290 
               
               
                   
                 Distal body proximal end 
                 1292 
               
               
                   
                 Distal body proximal junction 
                 1294 
               
               
                   
                 Distal body distal end 
                 1296 
               
               
                   
                 Distal body length 
                 1298 
               
               
                   
                 Distal body height 
                 1300 
               
               
                   
                 Distal body framework 
                 1302 
               
               
                   
                 Distal body cells 
                 1304 
               
               
                   
                 Distal body memory metal strips 
                 1306 
               
               
                   
                 First distance 
                 1308 
               
               
                   
                 Second distance 
                 1310 
               
               
                   
                 Proximal body free distal crowns 
                 1312 
               
               
                   
                 Distal body free distal crowns 
                 1314 
               
               
                   
                 Distal body distal junction 
                 1316 
               
               
                   
                 Lead wire 
                 1318 
               
               
                   
                 Catheter 
                 Not shown 
               
               
                   
                 Enlarged cell 
                 1322 
               
               
                   
                 Proximal bumper 
                 1324 
               
               
                   
                 Thin segment 
                 1326 
               
               
                   
                 Distal bumper 
                 1328 
               
               
                   
                 Blood clot 
                 1330 
               
               
                   
                 Tube 
                 1332 
               
               
                   
                 Tube proximal end 
                 1334 
               
               
                   
                 Tube distal end 
                 1336 
               
               
                   
                 Handle 
                 1338 
               
               
                   
                 Moveable slide 
                 1340 
               
               
                   
                 Slot 
                 1342 
               
               
                   
                 Slot length 
                 1344 
               
               
                   
                 Distance the distal body travels from the 
                 1346 
               
               
                   
                 deployed configuration to the retracted 
                   
               
               
                   
                 configuration 
                   
               
               
                   
                 Proximal strips 
                 1348 
               
               
                   
                 Proximal strip proximal end 
                 1350 
               
               
                   
                 Proximal strip distal end 
                 1352 
               
               
                   
                 Proximal crown 
                 1354 
               
               
                   
                 Inner tube 
                 1356 
               
               
                   
                 Inner tube proximal end 
                 1358 
               
               
                   
                 Inner tube distal end 
                 1360 
               
               
                   
                 Outer tube 
                 1362 
               
               
                   
                 Outer tube proximal end 
                 1364 
               
               
                   
                 Outer tube distal end 
                 1366 
               
               
                   
                 Guide catheter 
                 1368 
               
               
                   
                 Guide catheter distal end 
                 1369 
               
               
                   
                 Film 
                 1370 
               
               
                   
                 Guide catheter proximal end 
                 1371 
               
               
                   
               
            
           
         
       
     
     Having now described the invention in accordance with the requirements of the patent statutes, those skilled in the art will understand how to make changes and modifications to the disclosed embodiments to meet their specific requirements or conditions. Changes and modifications may be made without departing from the scope and spirit of the invention, as defined and limited solely by the following claims. In particular, although the system has been exemplified for use in retrieving blood clots, the system may be used to retrieve other objects from animal lumens. In addition, the steps of any method described herein may be performed in any suitable order and steps may be performed simultaneously if needed. 
     Terms of degree such as “substantially”, “about” and “approximately” as used herein mean a reasonable amount of deviation of the modified term such that the end result is not significantly changed. For example, these terms can be construed as including a deviation of at least ±5% of the modified term if this deviation would not negate the meaning of the word it modifies.