Source: http://www.google.com/patents/US7008368?dq=5685792
Timestamp: 2014-07-23 06:15:25
Document Index: 9918753

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 30822', 'art.\n1']

Patent US7008368 - Method for making treatment strands - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA delivery system and method for interstitial radiation therapy uses a seed strand composed of a plurality of tubular shaped, hollow radioactive seeds with a bore. The seed strand as assembled with a material provided in the bore and between the spaced seeds is axially stiff and radially flexible and...http://www.google.com/patents/US7008368?utm_source=gb-gplus-sharePatent US7008368 - Method for making treatment strandsAdvanced Patent SearchPublication numberUS7008368 B2Publication typeGrantApplication numberUS 10/716,328Publication dateMar 7, 2006Filing dateNov 18, 2003Priority dateNov 2, 2001Fee statusLapsedAlso published asUS6786858, US7252630, US20030088144, US20040102672, US20070135674, WO2003039463A2, WO2003039463A3Publication number10716328, 716328, US 7008368 B2, US 7008368B2, US-B2-7008368, US7008368 B2, US7008368B2InventorsRichard A. Terwilliger, Gary A. LamoureuxOriginal AssigneeIdeamatrix, Inc., Worldwide Medical Technologies, LlcExport CitationBiBTeX, EndNote, RefManPatent Citations (76), Non-Patent Citations (10), Classifications (18), Legal Events (8) External Links: USPTO, USPTO Assignment, EspacenetMethod for making treatment strandsUS 7008368 B2Abstract A delivery system and method for interstitial radiation therapy uses a seed strand composed of a plurality of tubular shaped, hollow radioactive seeds with a bore. The seed strand as assembled with a material provided in the bore and between the spaced seeds is axially stiff and radially flexible and is bioabsorbable in living tissue.
1. A method to create a treatment strand tissue comprising the steps of:
accepting a tissue treatment plan for the tissue to be treated, which treatment plan specifies a number of, and a spacing of, treatment seeds, said treatment seeds to be provided in the strand;
threading a material through a bore of each of the specified number of treatment seeds;
positioning the number of treatment seeds at the specified spacing; and
heating to cause the material to expand and fix the seeds at the specified spacing.
said accepting step includes accepting a treatment plan that specifies a plurality of radioactive seeds and an optimal spacing between adjacent seeds and around each of two end seeds; and
wherein said threading step includes creating strands to said spacings.
said accepting step includes accepting a treatment plan created using an imaging device.
said accepting step includes accepting a treatment plan created using a software program to specify intervals between adjacent seeds.
CLAIM OF PRIORITY This application is a divisional application of, and claims priority to U.S. patent application Ser. No. 10/132,930, filed Apr. 26, 2002, now a Pat. No. 6,786,858 B2, which claims priority to U.S. Provisional Patent Application No. 60/336,329, filed Nov. 2, 2001; and U.S. Provisional Patent Application No. 60/360,260 filed Feb. 26, 2002, all of which are incorporated herein by reference.
CROSS REFERENCE TO RELATED APPLICATIONS The following applications are cross-referenced and incorporated herein by reference:
U.S. patent application Ser. No. 10/035,083 entitled �Delivery System and Method for Interstitial Radiation Therapy,� by Terwilliger, et al., filed Dec. 28, 2001.
U.S. Patent Application No. 60/360,241 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Seed Strands Constructed With Preformed Strand Housing,� by Terwilliger et al., filed Feb. 26, 2002.
U.S. Patent Application No. 60/360,237 entitled �System for Manufacturing Interstitial Radiation Therapy Seed Strands,� by Terwilliger et al., filed Feb. 26, 2002.
U.S. Patent Application No. 60/360,272 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Strands Constructed With Extruded Strand Housing,� by Terwilliger et al., filed Feb. 26, 2002.
U.S. patent application Ser. No. 10/162,548 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Seed Strand Constructed with Preformed Strand Housing� by Terwilliger et al., filed Jun. 4, 2002.
U.S. patent application Ser. No. 10/162,546 entitled �System for Manufacturing Interstitial Radiation Therapy Seed Strand� by Terwillier et al., filed Jun. 4, 2002.
U.S. patent application Ser. No. 10/162,006 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Strands Constructed with Extruded Strand Housings� by Terwillier et al., filed Jun. 4, 2002.
U.S. patent application Ser. No. 10/397,940 entitled �Delivery System and Method for Interstitial Radiation Therapy� by Terwillier et al., filed Mar. 26, 2003.
U.S. Patent Application No. 60/469,940 entitled �Delivery System and Method for Interstitial Radiation Therapy using Seed Strands with Custom End Spacing� by Terwilliger et al., filed May 13, 2003.
U.S. patent application Ser. No. 10/619,928 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Seed Strands with Custom End Spacings� by Terwilliger et al., filed Jul. 15, 2003.
U.S. patent application Ser. No. 10/705,133 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Seed Strands Constructed with Preformed Strand Housing� By Terwilliger et al., filed Nov. 10, 2003
U.S. Patent Application No. 60/360,299 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Seed Elements With Ends Having One of Projections and Indentations,� by Terwilliger et al., filed Feb. 26, 2002.
U.S. patent application Ser. No. 10/162,547 entitled �Delivery System and Method for Interstitial Radiation Therapy Using Seed Elements with Ends having One of Projections and Indentations� by Terwillier et al., filed Jun. 4, 2002.
There have been many developments in brachy therapy (i.e. therapy relating to treating malignant tumors, which use such radioactive seeds). In one technique, hollow metal needles are inserted into the tumor, and the seeds are thereafter inserted into the needles, while the needles are being retracted to deposit the seeds in the tumor. Such devices are shown in U.S. Pat. No. 4,402,308, which is incorporated herein by reference. The most commonly used instruments are the Henschke and Mick devices. The use of such devices has distinct disadvantages. The overall length of such devices is over 20 cm and such devices have significant weight making them difficult to manipulate.
While assemblies with bio-absorbable materials and spaced radioactive seeds are known for use as interstitial implants, such assemblies are not entirely satisfactory. In one instance, the elongated implant is made using a bio-absorbable material consisting of an Ethicon Vicryl.RTM. This material is commonly known as PGA. Radioactive seeds and teflon spacers are inserted into the material. Needles loaded with the seeds in the carrier bio-absorbable material are sterilized or autoclaved causing contraction of the carrier material and resulting in a rigid column of seeds and spacers. This technique was reported in �Ultrasonically Guided Transperineal Seed Implantation of the Prostate: Modification of the Technique and Qualitative Assessment of Implants� by Van't Riet, et al., International Journal of Radiation Oncology, Biology and Physics, Vol. 24, No. 3, pp. 555�558, 1992, which is incorporated herein by reference. Such rigid implants have many drawbacks, including not having the ability to flex with the tissue over the time that the bio-absorbable material dissolves.
As the tissue or glands shrink back to pre-operative size, and thus as the tissue recedes, a rigid elongated implant does not move with the tissue, but remain stationary relative to the tissue or gland. The final location relative to the tumor is thus not maintained and the dosage of the radioactive seeds does not meet the preoperative therapy plan.
Another system for providing an elongated implant having radioactive seeds disposed therein is disclosed in U.S. Pat. No. 4,697,575, which is incorporated herein by reference. In this reference, a plurality of encapsulated radioactive seeds are positioned in a predetermined array. The seeds are encapsulated in individual capsules, with each capsule having a projection on one capsule end and a complementary recess on the remaining capsule end. A projection in one capsule is engageable with a recess in an adjacent capsule such that the desired number of seeds can be plugged together to form a column of rigid, bio-absorbable and elongated material. This implant is not entirely satisfactory inasmuch as it is time consuming and inefficient to carry out the manipulative steps of assembling such a strand of elongated material. Further the implant is quite rigid as it is inserted into a patient without the use of an introduction needle, as the implant itself acts as a rigid needle that is undesirably left in place.
In U.S. Pat. No. 6,163,947 cited, Coniglione, issued Dec. 26, 2000, and incorporated herein by reference, a string of hollow seeds described in U.S. Pat. No. 5,713,828, cited, issued Feb. 3, 1998, also incorporated herein by reference, are strung onto a thin strand of suture material to form an array of seeds. This string of seeds is delivered into the tumor site placed within a hollow needle. Since the hollow lumen of the seeds are substantially smaller in diameter in relation to the outside diameter of the seed body, the string of suture material must be substantially smaller in diameter than the seeds themselves. The resulting diameter of the suture makes the suture axially weak and the suture can fold up between the seeds within the needle lumen as pressure is applied on the proximal end of the strand within the needle. Thus, the difference in diameter between the seed and the thin suture material makes the assembly susceptible to collapse from axial force applied on the proximal end, resulting in jamming of the assembly within the needle lumen and/or the assembly not maintaining the proper desired spacing between radioactive seeds as the assembly is expelled into the treatment site.
One relevant reference discloses modification of the needle structure to include a reloadable cartridge. In such reference the needle is inserted and as a cartridge of seeds is emptied, the plunger of the device is withdrawn and a new cartridge containing radioactive seeds is loaded into the syringe (Moore, U.S. Pat. No. 4,086,914, issued May 2, 1978). Another reference offers a device for implanting individual seeds in a planar dispensing device with multiple needles to ensure accurate placement of the seeds relative to one another and the treatment site (Kirsch, U.S. Pat. No. 4,167,179, issued September 1979). Another reference disclosed a shielding devices for bead strands which prevents radiation exposure for health care personnel performing treatment with the radioactive seeds (Windorski, U.S. Pat. No. 4,509,506, issued April 1985). All of the above references are incorporated herein by reference.
In another technique for treating tumors disclosed in U.S. Pat. No. 5,460,592 cited, and incorporated herein by reference, seeds are held in a woven or braided bio-absorbable carrier such as a braided suture. The carrier with the seeds laced therein is then secured in place to form a suitable implant. This braided assembly exhibits many drawbacks, such as when the braided assembly is placed into the tumor. The needle that carries the braided assembly must be blocked at the distal end to prevent body fluids from entering the lumen. If body fluid reaches the braided assembly while the assembly is still in the lumen of the needle, the braided assembly can swell and jam in the lumen. Because the assembly is made of a braided tubular material, it is difficult to push the assembly out of the needle. As the needle is withdrawn from the tumor, pressure on the proximal end of the braided assembly causes the braid to expand and jam inside the lumen of the needle. Finally, if the braided strand is successfully expelled from the needle, the relative spacing of the seeds may not be maintained, if the braided material has collapsed.
U.S. Patent Documents: U.S. Pat. No. 1,578,945 issued January 1923 to Withers; U.S. Pat. No. 2,067,589 issued January 1937 to Antrim; and U.S. Pat. No. 3,351,049 issued November 1967 to Lawrence. Publications: Medi-Physics brochure entitled �I-125 Seeds.RTM. In Carrier�, Model No. 6720; Medi-Physics brochure entitled �I-125 Seed.RTM. Source Model 671�; and Martinez et al., Int. J. Radiation Oncology Biol. Phys., Vol. 5, No. 3, March 1979, pp. 411�413. SUMMARY OF SOME OF THE ASPECTS OF THE INVENTION Accordingly, the present invention cures and addresses the disadvantages exhibited in the prior art devices and implants. What is desired is to provide a bio-absorbable carrier material having seeds disposed within the material, with the seeds being accurately spaced a predetermined distance from one another, with the seeds repeatably maintaining that spacing, even after being introduced into the body.
It is further desired that an elongated member with seeds be sufficiently rigid axially to allow expulsion of the member from a needle while maintaining the spacing between seeds, and that the member be flexible and pliable enough to move with the tissue as the tissue shrinks back to pre-operative size.
In accordance with an embodiment of the invention, the delivery system comprises a substantially axially stiff and radially flexible elongated member that is bio-absorbable in living tissue. The member has a length that greatly exceeds its width or diameter. The elongated member has a plurality of radioactive seeds dispersed therein in a predetermined array.
In another embodiment, the substantially axially stiff and radially flexible elongated member comprises a single continuous monofilament element of bio-compatible material that has a plurality of seed sources molded thereon. The bio-compatible material can be preferably a bio-absorbable polymer or copolymer material that encapsulates the plurality of radioactive seeds.
A further embodiment of the invention is characterized as a substantially constant diameter solid elongated matrix member of a bio-absorbable polymer with seeds positioned therein at predetermined spacing along its length, whose diameter is a close fit to the needle lumen, thus preventing collapse as axial force is applied on the proximal end of the elongated matrix member. The space between the seed sources is maintained throughout the insertion and expulsion of the elongated matrix member. The diameter of the polymer between the seeds may be slightly reduced in relation to the overall diameter of the elongated matrix member, but is of sufficient diameter so as to not allow collapse of the matrix member within the needle lumen.
Thus, one object of the invention is to provide an implant that can be custom made as specified by a prescription for an individual patient.
The present embodiment of the invention allows for a therapeutic element comprising hollow radioactive seeds positioned on a suture strand composed of material that as an assembly is axially rigid and radially flexible. The material may be composed of a bioabsorbable polymer. Additionally, heating of the polymer may cause it to swell, thereby locking the seeds in position on the strand.
DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged side view of a tubular shaped, hollow radioactive seed element with a central bore.
FIG. 2 is an enlarged side view of an embodiment of the invention showing several tubular shaped, hollow radioactive seeds with polymer through the seed bore to form a therapeutic element.
FIG. 3 is an enlarged side view of yet another embodiment of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Unlike prior brachytherapy devices, the present invention utilizes a polymer-based suture inserted through the bore of a tubular shaped seed. This device provides for improved brachytherapy because radioactive seeds can be conveniently threaded on to suture material that is readily available in any treatment setting. Suture material, rigid rods or other biocompatible connecting members can be passed through the center of the device and then the position of the seed elements can be fixed as needed for treatment. Heating the polymer strands with the seeds in position will cause the polymer to expand and fix the seeds in position. The polymer can be bioabsorbable. Examples of polymers are shown in Table 1. The hollow tube design of the device permits tissue to grow into the hollow space, particularly after the polymer suture material has been absorbed, further minimizing migration of the seed. The tube shaped substrate can be made of a material that is essentially transparent to radiation, such as titanium. In addition to the radioisotopes listed in Table 1, the seed can be coated with a isotope that will convert to radioactive emissions. The precursor isotope can be activated to varying degrees which would allow customization of the emission given off by a single seed because the amount of irradiation and subsequent activation can be varied for different treatment strategies. The hollow tube-shaped substrate can be formed from a material transparent to radiation emitted by the therapeutic isotope. Covering the radioactive layer with a sealing layer prevents direct contact between the radioactive isotope and health care workers, or its escape into the surrounding environment or tissues.
Additionally, seeds can be manufactured using iridium 192, cesium 131, gold 198, yttrium 90 and phosphorus 32. Further radioactive isotopes used to manufacture seeds are not limited to these examples, but can include other sources of different types of radiation. In addition, it is to be understood that other types of seeds can be used. In particular, seeds such as those described in U.S. Pat. No. 6,248,057, which patent is incorporated herein by reference, and which is entitled �Absorbable Brachytherapy and Chemotherapy Delivery Devices and Methods�, can be used with the present invention. These seeds include radiation delivery devices, drug delivery devices, and combinations of radiation and drug delivery devices in the form of beads, seeds, particles, rods, gels, and the like. These particular seeds are absorbable. In such seeds, the bio-absorbable structure can have a predefined persistence which is substantially longer than a half-life of the radioactive element contained in the bio-absorbable structure. These above bio-absorbable seeds can be used in the same manner as the seeds described herein with respect to the invention.
The substantially axially, semi-rigid, and radially or laterally flexible elongated member may be made of any of the natural and/or synthetic bio-compatible and bio-absorbable materials. Natural and synthetic polymers and copolymers can be used. Examples of synthetic bio-absorbable polymer materials are the polymers and copolymers of glycolide and lactide, polydioxanone and the like. Such polymeric materials are more fully described in U.S. Pat. Nos. 3,565,869, 3,636,956, 4,052,988, and European Patent Application No. 30822, all of which are incorporated herein by reference. Specific examples of bio-absorbable polymeric materials that can be used to produce the substantially axially stiff and radially flexible elongated member of embodiment of the present invention are polymers made by ETHICON, Inc., Somerville, N.J., under the trademarks �MONOCRYL�� and �MAXON�,� which material is incorporated herein by reference.
Table 2 below, provides examples of polymers (and manufacturers) suitable for use in producing embodiments of the therapeutic member of the invention. A further discussion of such biodegradable polymers can be found in an article by John C. Middleton and Arthur J. Tipton entitled �Synthetic Biodegradable Polymers as Medical Devices,� published March 1998 in Medical Plastics and Bio-materials, which article is incorporated herein by reference.
225�230
173�178
60�65
58�63
(−65)�(−60)
(−10)�0 1.5
50�55
The final hardness of the polymer of the elongate member should preferably be in a range from 20 to 80 durometer and more preferably in the range of 20 to 40 durometer. The bio-absorbable material should preferably be absorbed in living tissue in a period of time of from about 70 to about 120 days, but can be manufactured to be absorbed anywhere in a range from one week to one year, depending on the therapeutic plan for each specific patient. Preferably the bio-absorbable material is selected to absorb about when the half-life of the radioactive seeds is reached.
In FIG. 1, the tubular shaped, hollow radioactive seed 11 is pictured. The seed 11 has ends 12 and a bore 13 which passes through the center of the seed 11 and communicates with the ends 12 of the seed 11.
FIG. 2 shows a side view of a section of the therapeutic element. The tubular shaped radioactive seed 21 as described in FIG. 1 is shown. Similar to FIG. 1, the seed 21 has ends 22, and the hollow bore 23 through the center of the seed 21 communicates with the ends 22 of the seed 23. Also shown is the material 24 that passes through the bore 23 of the seed 21 and makes the assembly axially rigid and radially or laterally flexible. The material 24 maybe a polymer as described above in Table 2. The material 24 maybe inserted into the bore 23 of the seed 21 as a suture and then heated, causing the suture to expand and fix the seeds 21 in position. More particularly, the suture material is fashioned by molding from a material 24 that is axially rigid, yet radially flexible. Then the suture is inserted into the central bore of the tubular shaped radioactive seed elements. The seed elements 21 are placed along the suture with predetermined spacing that is specific to the desired treatment. The suture or the entire therapeutic element can then be heated, causing the material 24 to expand and fix the seeds 21 in place, while expanding between the seeds 21 to a width that is greater than the bore 23 of the hollow seeds 21. Alternatively, the seeds 21 can be fixed in place by crimping the suture at either end of the hollow seed 21 into a shape that does not fit through the seed bore. Such crimping can fix the seeds in place. Once crimping has occurred, if desired and applicable according to the type of suture used, the strand can be heated in order to cause the suture to expand and further fix the seeds in place. Using such a crimping technique, the spacing between each seed pair can be independently set in accordance to a treatment plan as set forth below.
Alternatively, the seeds 21 maybe placed in a mold and the material 24 flowed into cavities between the seeds 21 and into the hollow bore 23 of the seed. Upon cooling, the material 24 can expand and fix the seeds 21 into position along the therapeutic element. More particularly, the seeds 21 may be placed in a mold that fits the seeds 21 and a cavity that extends between the seeds 21. The synthetic polymer 24 is introduced into the mold at a temperature that is above the melt point of the polymer 24. The polymer 24 flows into the bore 23 of the seeds 21 and fills in the spaces between the seeds 21. After the mold has cooled, it is disassembled, and the finished elongated member is removed. Because the polymer 24 flows at temperatures significantly greater than 250� F., the therapeutic element can easily be steam sterilized before implantation.
FIG. 3 illustrates another embodiment of the present invention. The seeds 31 can be spaced according to a received prescription plan for a given patient. The seeds 31 can then be fixed into position by crimping 35 the suture material or polymer 34 that borders the seed, or crimping the suture material bordering the seed 31 and heating the suture material. The crimped sections 35 do not fit inside the hollow bore 33 of the seeds 31. Thus, the seeds 31 are fixed into position by the crimped sections 35 of suture or polymer 34 that occur at the edge of the seeds, near the end 32 of the seed.
The resulting elongated member is now a single solid monofilament of the polymer with the seeds spaced along the monofilament and encapsulated at the appropriate intervals. The member is generally very radially flexible such that it can be bent back upon itself in a circle without kinking. However, the member is axially rigid and has sufficient column strength along its longitudinal axis so that the member can be urged out of a hollow needle without the member folding upon itself. Again, the intervals can be selected to be any distance or combination of distances that are optimal for the treatment plan of the patient.
Based on the above, it is evident that the present invention provides for an embodiment having a biodegradable polymer inserted through the bore of tubular-shaped hollow seeds. The seeds can be spaced in custom manner so that each member or strand is designed for the particular patient. That is to say that the spacing between each seed pair in a strand or member can be different for each seed pair. Further, each individual strand can have an entirely different seed spacing pattern than the next strand or member. Characteristically or typically for a surgical procedure, up to twenty-five of such strands or members are used to encircle the organ or tumor that is affected.
In other embodiments, the strand or member can be made with the incorporation of drugs and/or hormones and/or other therapeutics which are embedded in or formed in the polymer and/or seeds. Thus, the embodiment of the invention can deliver not only radioactive seeds, but such therapeutic drugs, hormones and other therapeutic devices. In addition, the strand or member can deliver heated seeds such as provided by ATI Medical. Then seeds can be preferably heated to from about 6� C. to about 70� C. prior to being inserted into a patient in a preferred embodiment. ATI Medical is located at (www.ATImedical.com), and reference to such heated seeds is incorporated herein by reference.
Further to the invention, as discussed above, it should be understood that the strand or member can be made echogenic by the incorporation of, for example, air bubbles in the polymer spaces between the seeds. These air bubbles or pockets can be formed in the polymer in ways identified above and other ways known to one of skill in the art.
1. The substantially axially stiff and radially flexible elongated member allows controlled placement of the plurality of radioactive seeds that are encapsulated and positioned in a predetermined array along the member without migration of the individual radioactive seeds during the time the seeds are treating the tumor. 2. The fixed linear positioning of the seeds minimizes �hot� and �cold� radiation spots due to undesirable movement of the seeds. 3. The axial stiffness of the elongated member allows the elongated member to be urged out of the needle as the needle is withdrawn, without the member jamming in the needle, by collapsing or expanding as the needle is withdrawn from the tumor site. 4. The radial flexibility of the elongated member allows locational accuracy to be maintained as the gland shrinks to pre-procedural size, as the swelling that occurs during tissue disruption and needle manipulation recedes. 5. Increased speed of implant resulting in reduced surgical time and health care provider radiation exposure. Method of Delivering Customized Strands and/or Members Per A Therapeutic Prescription As is known in the industry, there is software which can be used to provide branchytherapy treatment planning guides which are customized for each individual patent. Such software is provided by Rossmed which is located at Ross Medical, 7100 Columbia Gateway Drive, Suite 160, Columbia, Md. 21046. This particular software, which is incorporated herein by reference, is known as the Strata suite, which software helps physicians to develop and visualize low dose rate brachytherapy treatment plans for treating malignant tumors in human tissue. The treatments entail the use of radioactive seed sources which are implanted adjacent to the malignant tissue. The Strata software uses imaging to create a three dimensional reconstruction of the patient's anatomy. The software is able to plan the placement of the seeds within the target. The radiation dose that is delivered to the target can be computerized and visualized using the software. The software can then specify an optimal number of strands or members along with optimal seed dosages and spaces between seeds. At times, the loading plans so specified cannot be optimized by the physician in preparing the seed and spacer loads for the needles, as the spacers come in only predefined lengths.
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Phys. 24(3): 555-558 (1992).10Webster'II New Riverside University Dictionary, p. 191, 1984.Classifications U.S. Classification600/8International ClassificationA61N5/10, A61M36/00, G21G4/08, A61M36/12, A61N5/00, B29C47/02Cooperative ClassificationG21G4/08, A61N5/1027, A61N2005/1023, B29C47/028, B29C47/021, A61N5/1007, B29C47/0016European ClassificationA61N5/10B7, B29C47/02E, G21G4/08, A61N5/10B2Legal EventsDateCodeEventDescriptionApr 27, 2010FPExpired due to failure to pay maintenance feeEffective date: 20100307Mar 7, 2010LAPSLapse for failure to pay maintenance feesOct 12, 2009REMIMaintenance fee reminder mailedJul 17, 2009ASAssignmentOwner name: BIOCOMPATIBLES UK LIMITED, UNITED KINGDOMFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WORLD WIDE MEDICAL OF FLORIDA, LLC;REEL/FRAME:022960/0970Effective date: 20090709Owner name: BIOCOMPATIBLES UK LIMITED,UNITED KINGDOMFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WORLD WIDE MEDICAL OF FLORIDA, LLC;REEL/FRAME:22960/970Jul 15, 2009ASAssignmentOwner name: WORLD WIDE MEDICAL OF FLORIDA, LLC, CONNECTICUTFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:IDEAMATRIX, INC.;REEL/FRAME:022960/0112Effective date: 20090610Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:IDEAMATRIX, INC.;REEL/FRAME:22960/112Owner name: WORLD WIDE MEDICAL OF FLORIDA, LLC,CONNECTICUTAug 8, 2008ASAssignmentOwner name: BIOCOMPATIBLES UK LIMITED, UNITED KINGDOMFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WORLD WIDE MEDICAL TECHNOLOGIES, LLC;REEL/FRAME:021354/0292Effective date: 20080801Owner name: BIOCOMPATIBLES UK LIMITED,UNITED KINGDOMFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WORLD WIDE MEDICAL TECHNOLOGIES, LLC;REEL/FRAME:21354/292Dec 1, 2005ASAssignmentOwner name: WORLDWIDE MEDICAL TECHNOLOGIES, L.L.C., CONNECTICUFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAMOUREUX, GARY;REEL/FRAME:017073/0913Effective date: 20051028Dec 31, 2003ASAssignmentOwner name: IDEAMATRIX, INC., COLORADOFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TERWILLIGER, RICHARD A.;REEL/FRAME:014227/0296Effective date: 20031209RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google