Source: http://www.google.com/patents/US6077287?dq=5636223
Timestamp: 2016-09-26 10:40:42
Document Index: 686074852

Matched Legal Cases: ['art.\n11', 'art 32', 'art 34', 'art 40', 'art 42', 'art 42', 'art 40', 'art 42', 'art 40', 'art 40', 'art 40', 'art 40', 'art 12', 'art 32', 'art 40', 'art 42', 'art 40', 'art 42', 'art 40', 'arts 40', 'art 40', 'art 42', 'art 40', 'art 42', 'art 40', 'art 40', 'art 42', 'art 42']

Patent US6077287 - Surgical instrument - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA disposable surgical instrument (10) includes a flexible actuator cable (180) which transmits force to a movable part (34) to effect pivotal movement of the movable part. The flexible actuator cable (180) is made from cold-worked nickel--titanium wire....http://www.google.com/patents/US6077287?utm_source=gb-gplus-sharePatent US6077287 - Surgical instrumentAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6077287 APublication typeGrantApplication numberUS 09/322,662Publication dateJun 20, 2000Filing dateMay 28, 1999Priority dateJun 11, 1997Fee statusPaidAlso published asUS5899914, WO1998056300A1Publication number09322662, 322662, US 6077287 A, US 6077287A, US-A-6077287, US6077287 A, US6077287AInventorsTimothy E. Taylor, Christopher ZirpsOriginal AssigneeEndius IncorporatedExport CitationBiBTeX, EndNote, RefManPatent Citations (16), Referenced by (287), Classifications (17), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetSurgical instrument
US 6077287 AAbstract
A disposable surgical instrument (10) includes a flexible actuator cable (180) which transmits force to a movable part (34) to effect pivotal movement of the movable part. The flexible actuator cable (180) is made from cold-worked nickel--titanium wire.
1. A disposable surgical instrument comprising:a handle; a rigid stem section extending from said handle and defining a longitudinal axis of said surgical instrument; a flexible stem section extending from a distal end of said rigid stem section; a surgical tool connected with a distal end of said flexible stem section, said surgical tool including a fixed part fixed for movement with said distal end of said flexible stem section, said surgical tool including a movable part supported for pivotal movement relative to said fixed part about a pivot axis; and a flexible actuator cable having a first end portion movable by an actuator member on said handle, an intermediate portion extending through said flexible stem section, and a second end portion connected with said movable part;said flexible actuator cable transmitting force from said actuator member to said movable part to effect pivotal movement of said movable part about said pivot axis; said flexible actuator cable being made from cold-worked nickel--titanium wire. 2. A surgical instrument as set forth in claim 1 wherein said nickel--titanium wire is made from a material which has not been heat treated and which has no shape memory characteristics.
3. A surgical instrument as set forth in claim 1 wherein said wire has a diameter of about 16 to 20 thousandths of an inch, said surgical instrument having a first radiused portion about which said wire is bent over a radius less than 100 thousandths of an inch.
4. A surgical instrument as set forth in claim 3 wherein said first radiused portion has a radius of about 60 thousandths of an inch.
5. A surgical instrument as set forth in claim 4 wherein said first radiused portion is a moment arm on a pivoting jaw of said surgical instrument.
6. A surgical instrument as set forth in claim 3 wherein said surgical instrument has a second radiused portion having a radius of about three eighths of an inch and about which said wire is dynamically flexed.
7. A surgical instrument as set forth in claim 1 wherein said wire has a yield point of about 150,000 psi.
8. A surgical instrument as set forth in claim 1 wherein said cold-worked nickel--titanium wire has a chemical composition of 50.8% plus or minus 0.2% nickel by number of atoms, and balance titanium.
9. A surgical instrument as set forth in claim 1 wherein said cold-worked nickel--titanium wire has a diameter of about 16 to 20 thousandths of an inch and is cold worked to reduce its area by about 27%.
10. A surgical instrument as set forth in claim 1 wherein said movable part is not spring-biased relative to said fixed part.
11. A surgical instrument as set forth in claim 10 wherein the nickel--titanium wire is made from a material which has not been heat treated and which has no shape memory characteristics.
This application is a continuation in part of application Ser. No. 08/872,831 now U.S. Pat. No. 5,899,916.
The present invention relates to a surgical instrument and, more particularly, to an endoscopic surgical instrument which may be used for cutting and/or removal of tissue.
The present invention is a disposable surgical instrument comprising a handle, a rigid stem section extending from the handle and defining a longitudinal axis of the surgical instrument, and a flexible stem section extending from a distal end of the rigid stem section. A surgical tool is connected with a distal end of the flexible stem section. The surgical tool includes a fixed part fixed for movement with the distal end of the flexible stem section, and a movable part supported for pivotal movement relative to the fixed part about a pivot axis. The surgical instrument includes a flexible actuator cable which has a first end portion movable by an actuator member on the handle, an intermediate portion extending through the flexible stem section, and a second end portion connected with the movable part of the surgical tool. The flexible actuator cable transmits force from the actuator member to the movable part to effect pivotal movement of the movable part about the pivot axis. The flexible actuator cable is made from cold-worked nickel--titanium wire.
FIG. 1 is a side elevational view, with parts removed, of a surgical instrument constructed in accordance with a first embodiment of the present invention;
FIG. 2 is an enlarged view of a flexible stem section of the surgical instrument of FIG. 1, shown in a bent condition;
FIG. 3 is an enlarged sectional view of the flexible stem section, shown in a linear condition;
FIG. 5 is a further enlarged view of portions of FIG. 3;
FIG. 6 is a fragmentary elevational view of the surgical instrument with parts removed;
FIG. 7 is a sectional view taken generally along line 7--7 of FIG. 6;
FIG. 8 is a sectional view taken generally along line 8--8 of FIG. 6;
FIG. 9 is a perspective view of a trigger which forms part of the surgical instrument;
FIG. 10 is a schematic view of the two parts of the handle of the surgical instrument, shown in a separated condition;
FIG. 11 is an enlarged view of a portion of a surgical instrument constructed in accordance with a second embodiment of the present invention;
FIG. 12 is a fragmentary sectional view taken generally along line 12--12 of FIG. 11;
FIG. 13 is an enlarged view of a portion of a surgical instrument constructed in accordance with a third embodiment of the present invention;
FIG. 14 is a fragmentary sectional view taken generally along line 14--14 of FIG. 13;
FIG. 15 is an enlarged view of a portion of a surgical instrument constructed in accordance with a fourth embodiment of the present invention; and
FIG. 16 is a fragmentary sectional view taken generally along line 16--16 of FIG. 15.
The present invention relates to a surgical instrument and in particular to an endoscopic surgical instrument which may be used for cutting and/or removal of tissue. The present invention is applicable to various surgical instrument constructions. As representative of the present invention, FIG. 1 illustrates a surgical instrument 10.
The surgical instrument 10 includes generally a handle 12 with an actuator assembly 14 and a deflection control assembly 16. A proximal end portion 18 of a first stem section or rigid stem section 20 is fixed to the handle 12. A proximal end portion 22 of a second stem section or flexible stem section 24 is connected with a distal end portion 26 of the rigid stem section 20. A surgical tool 30, including a fixed tool part 32 (FIG. 2) and a movable tool part 34, is located on a distal end portion or tip portion 36 of the flexible stem section 24.
The handle 12 (FIGS. 1 and 10) of the surgical instrument 10 has a pistol grip configuration which is configured to be manually gripped by a person's hand. The handle 12 includes a first handle part 40 and a second handle part 42 which in overall configuration are substantially mirror images of each other and which are joined together to form the handle. The second handle part 42, overlies the first handle part 40 and covers the other parts of the surgical instrument 10 which are mounted on the first handle part. The second handle part 42 is, for clarity, shown only fragmentarily (FIG. 1).
The first handle part 40 has an outer peripheral rim 44 extending around a main wall 46. A trigger pivot pin 48 projects from the inner side surface 50 of the main wall 46 of the first handle part 40. The trigger pivot pin 48 defines a trigger pivot axis 52. A deflection control lever pivot pin 54 projects from the inner side surface 50 of the main wall 46 of the first handle part 40, at a location spaced apart from the trigger pivot pin 48.
The actuator assembly 14 includes a trigger 60. The trigger 60 is supported on the trigger pivot pin 48 for pivotal movement relative to the handle 12 about the pivot axis 52. The trigger 60 extends out of the handle 12 and is manually engageable to effect pivotal movement of the trigger relative to the handle. A generally V-shaped spring 64 formed as one piece with the trigger 60 engages a spring support pin 66 on the first handle part 40. The spring 64 biases the trigger 60 to an unactuated position, as shown in FIG. 1, relative to the handle 12.
The deflection control assembly 16 includes a deflection control lever 70. The deflection control lever 70 is supported on the deflection control lever pivot pin 54 for pivotal movement relative to the handle 12. A manually engageable portion 72 of the deflection control lever 70 projects from the handle 12. A tensioner 74 is disposed between the deflection control lever 70 and the first handle part 12. The tensioner 74 is supported for limited rotation about the pivot pin 54.
It should be understood that the deflection control assembly 16 is illustrated only schematically. Other types of deflection control assemblies can be substituted. Thus, the deflection control assembly 16 is illustrative of the various types of deflection control assemblies which can be used to provide the force for bending the flexible stem section 24 of the surgical instrument 10 in the manner illustrated.
The rigid stem section 20 of the surgical instrument 10 includes a rigid main tube 80 which extends between and interconnects the handle 12 and the flexible stem section 24. The main tube 80 may be made from a suitable metal or plastic, as desired. The main tube 80 has a longitudinal central axis 82 (FIGS. 3 and 5) which forms a longitudinal central axis of the surgical instrument 10. A central passage 84 extends axially along the length of the main tube 80. A proximal end portion 86 (FIG. 1) of the main tube 80 is fixed to the handle 12.
The rigid stem section 20 includes an interface element 90 (FIG. 5) fixed to a distal end portion 92 of the main tube 80. The interface element 90 has a disc-shaped main body portion 94. Upper and lower pairs of deflection control wire passages 100 and 102 (only one of each pair is shown) extend axially through a radially outer section of the main body portion 94 of the interface element 90.
A spring pocket 106 is formed in the main body portion 94 of the interface element 90. The spring pocket 106 has a cylindrical configuration centered on the axis 82. The spring pocket 106 faces distally, that is, in a direction away form the handle 12.
A rib 108 is located on the distal end face 110 of the main body portion 94 of the interface element 90. The rib 108 is located between the two pairs of control wire passages 100 and 102. The rib 108 has a convex, semi-cylindrical cross sectional configuration extending into and out of the plane of the paper as viewed in FIG. 3. The semi-cylindrical configuration of the rib 108 provides for bending or pivotal movement of the flexible stem section 24 relative to the rigid stem section 20, only in an upward or downward direction as viewed in FIGS. 1-3.
A hollow tubular stem portion 112 of the interface element 90 extends proximally from the main body portion 94 of the interface element. The stem portion 112 of the interface element 90 extends inside the central passage 84 in the main tube 80.
The flexible stem section 24 of the surgical instrument 10 includes a plurality of relatively pivotable vertebrae or links 120-129 arranged between the interface element 90 and the surgical tool 30. In the illustrated embodiment, ten identical vertebrae 120-129 are provided. The number of vertebrae can differ, depending on the desired length and amount of bending movement of the flexible stem section 24.
Each one of the vertebrae 120-129 has an annular, disc-shaped main body portion 130 (FIG. 5) generally similar in configuration to the main body portion 94 of the interface element 90. A cylindrical spring passage 132, centered on the axis 82, extends axially through each one of the vertebrae 120-129. Upper and lower pairs of deflection control wire passages 134 and 136 (only one of each pair is shown) extend axially through a radially outer section of the main body portion 94 of each vertebrae 120-129.
The distal end face of each one of the links 120-129 has a convex, semi-cylindrical rib 138. The ribs 138 on the links 120-129 are identical in configuration and orientation to the rib 108 on the interface element 90. In each one of the links 120-129 the spring passage 132 extends axially through the rib 138. The spring passage 132 widens as it extends distally from the main body portion 130 through the rib 138.
The proximal end face of each one of the links 120-129 has a concave, semi-cylindrical socket 140. Each one of the sockets 140 has a concave configuration adapted to pivotally receive one of the ribs 138.
The links 120-129 are arranged relative to the rigid stem section 20 so that the socket 140 on the most proximal link 120 receives the rib 108 on the interface element 90. The rib 138 on the most proximal link 120 is received in the socket 140 on the next most proximal link 122. In a similar manner, the ribs 138 on each one of the links 122-128 are received in the sockets 140 on the links 123-129, respectfully. The rib 138 on the most distal link 129 is received in a socket 142 (FIG. 5) on the fixed part 32 of the surgical tool 30.
All the links 120-129 of the flexible stem section 24 are thus supported on the rigid stem section 20 for pivotal movement relative to the rigid stem section. The surgical tool 30 is supported on the flexible stem section 24 for pivotal movement relative to the flexible stem section and to the rigid stem section 20. The surgical tool 30, as viewed in FIGS. 1-3 and 5, is movable in the plane of the paper.
The fixed jaw 32 (FIG. 3) of the surgical tool 30 has a support portion 160 and a cutting edge 162. A proximally facing spring pocket 154 is formed in the support portion 160 of the fixed jaw 32. A pivot pin 164 is mounted in the support portion 160 of the fixed jaw 32 and defines a pivot axis for pivotal movement of the movable jaw 34 relative to the fixed jaw 32.
The flexible stem section 24 includes an extension spring 150 for transmitting axial load between the surgical tool 30 and the rigid stem section 20 of the surgical instrument 10. The extension spring 150 is made from a suitable material, preferably stainless steel. In the illustrated embodiment, the extension spring 150 is a coiled spring, specifically, a cylindrical helical spring, made from metal wire having a circular cross section. The extension spring 150 is in a free or unstressed condition when the flexible stem section 24 is in a linear condition as shown in FIG. 2. When the extension spring 150 is in a free or unstressed condition, the coils of the spring are in abutting engagement along the length of the spring, and the spring is not compressible axially.
A first end portion 152 (FIG. 5) of the extension spring 150 is located in the spring pocket 154 in the fixed jaw 32 of the surgical tool 30. The extension spring 150 extends through the respective spring passages 132 in the stacked vertebrae 120-129, along the entire length of the flexible stem section 24. A second end portion 156 of the extension spring 150 is located in the spring pocket 106 in the interface element 90 of the rigid stem section 20.
The surgical instrument 10 includes upper and lower deflection control wires 170 and 172 for controlling bending movement of the flexible stem section 24. Each one of the wires 170 and 172 is formed as a U-shaped loop having its ends connected to the deflection control lever 70 and its center looped around the fixed jaw 32 of the surgical tool 30. The proximal ends of the deflection control wires 170 and 172, are connected for movement with the deflection control lever 70. The deflection control wires 170 and 172 extend from the deflection control lever 70 over the tensioner 74 (FIG. 1) and into the central passage 84 in the main tube 80. The tensioner 74 maintains an appropriate amount of tension on the deflection control wires 170 and 172.
The deflection control wires 170 and 172 pass through the rigid stem section 20 into the interface element 90. The deflection control wires 170 and 172 extend through the control wire passages 100 and 102 in the interface element 90, and into the control wire passages 134 and 136 in the links 120-129 of the flexible stem section 24. Central portions 174 and 176 (FIG. 3) of the deflection control wires 170 and 172 are looped around the support portion 160 of the fixed jaw 32 of the surgical tool 30.
The surgical instrument 10 includes an actuator cable 180 for effecting pivotal movement of the movable jaw 34 relative to the fixed jaw 32. The actuator cable 180 is a flexible metal cable having a first end portion 182 (FIG. 3) fixed to the movable jaw 34 of the surgical tool 30.
The actuator cable 180 is made from cold-worked nickel--titanium wire and is about 16 to 20 thousandths of an inch in diameter. A preferred material is Nitinol brand nickel--titanium wire, grade SE-508, which is available from NDC Nitinol Devices and Components, Inc., of Fremont, Calif. This preferred material has a chemical composition of 50.8% plus or minus 0.2% nickel by number of atoms, and balance titanium. It is believed that other compositions of nickel--titanium would be suitable for use in the actuator cable 180 of the surgical instrument.
The nickel--titanium material wire is preferably cold worked to reduce its area by 27% to form the actuator cable 180. This cold working of the material is performed instead of heat treating. The resulting product has a good balance of ductility and yield strength, along with excellent fatigue characteristics, compared to heat treated nickel--titanium. Heat treated nickel--titanium has a relatively high strain (8-9%) at yield and is also brittle. Heat treated nickel--titanium is also susceptible to fracturing in this type of application, because of its low ductility. The cold-worked nickel--titanium of the present invention is highly ductile, and does not fracture. It also has high strength, allowing for high bite forces of the jaws without failure.
Heat-treated nickel--titanium, when subjected to sufficient tensile force, will reach a super-elastic plateau, at which the wire will stretch >5% before it transmits any more force. Cold-worked nickel--titanium, since it does not enter the super-elastic state, can transmit higher actuation forces. The preferred material has a yield strength of greater than 150,000 psi and also has high impact strength or toughness.
The movable jaw 34 of the surgical tool 30 is supported on the pivot pin 164 for pivotal movement relative to the fixed jaw 32 about the pivot pin. The movable jaw 34 (FIG. 3) has a generally L-shaped configuration including an elongate main body portion 240 with a cutting edge 242. The cutting edge 242 on the movable jaw 34 is engageable with the cutting edge 162 of the fixed jaw 32 upon pivotal movement of the movable jaw relative to the fixed jaw from the open position shown in FIG. 5 to the closed position shown in FIG. 3. The L-shaped configuration of the movable jaw includes a moment arm 244 which extends from the main body portion 240 of the movable jaw, in a direction away from the pivot pin 164. The moment arm 244 extends in a direction generally perpendicular to the length of the cutting edge 242. The moment arm 242 has an arcuate end face or guide surface 246 presented generally away from the pivot pin 164.
A cable end passage 248 is formed in the main body portion 240 of the movable jaw 34 of the surgical instrument 10. The cable end passage 248 extends between the side surface of the movable jaw 34 on which the cutting edge 242 is formed and an opposite, outer major side surface 250 of the movable jaw 34. The cable end passage 248 extends generally parallel to the moment arm 244 and thus at a right angle to the length of the cutting edge 242 of the movable jaw 34. The cable end passage 248 is large enough in diameter so that the first end portion 182 of the actuator cable 180 can be inserted into the cable end passage. The first end portion 182 of the actuator cable 180 is soldered to the movable jaw 34 in the cable end passage 248.
The actuator cable 180 extends from the cable end passage 248 along the outside of the moment arm 244, in a direction generally away from the pivot pin 164. The actuator cable 180 then wraps around the arcuate guide surface 246 of the moment arm 244 and extends tangentially from the guide surface. The actuator cable 180 extends for a short distance through an open portion 252 of the fixed jaw 32 and into the first end portion 154 of the extension spring 150.
The actuator cable 180 extends for the entire length of the extension spring 150 and then into the stem portion 112 of the interface element 90. The dimensions of the extension spring 150 and the actuator cable 180 are selected so that the actuator cable is freely slidable axially within the extension spring but is constrained from radial movement within the extension spring. (The inner diameter of the extension spring 150 is exaggerated for clarity, in some of the drawings.)
An actuator cable guide tube 184 is received in a recess 186 in the proximal end of the stem portion 112 of the interface element 90. The actuator cable guide tube 184 has a hollow, tubular configuration centered on the axis 82 and defining a cable passage 188. The actuator cable 180 extends from the extension spring 150 of the interface element 90 into the actuator cable guide tube 184. The inner diameter of the guide tube 184 is selected so that the actuator cable 180 is freely slidable axially within the passage 188 in the guide tube but is constrained from radial movement within the guide tube.
A proximal end portion 190 (FIG. 6) of the actuator cable guide tube 184, disposed in the proximal end portion 86 of the main tube 80, is received in a linear end portion 192 of a cable guide channel 194 in the handle 12. The cable guide channel 194 is formed between opposing, complementary channel walls 200 and 202 on the first handle part 40 and the second handle part 42, respectively.
The channel wall 200 (FIG. 6) on the first handle part 40, is formed on the inner side 50 surface of the main wall 46 of the first handle part. The channel wall 200 has a castellated configuration including alternating projections 204 and recesses 206. The projections 204 of the channel wall 200 have a U-shaped cross-sectional configuration, as seen in FIG. 7, for receiving the actuator cable 180.
The channel wall 202 on the second handle part 42 is formed on an inner side surface 208 (FIG. 10) of a main wall 210 of the second handle part. The channel wall 202 has a castellated configuration including alternating projections 216 and recesses 214. The projections 216 of the channel wall 202 have a U-shaped cross-sectional configuration identical to the configuration of the projections 204 of the channel wall 200 on the first handle part 40.
The two handle parts 40 and 42 are interengaged so that the projections 204 of the channel wall 202 on the second handle part engage in the recesses 214 in the channel wall 200 on the first handle part. Also, the projections 216 of the channel wall 200 on the first handle part 40 engage in the recesses 206 in the channel wall 202 on the second handle part 42. The cable guide channel 194 (FIG. 7) which is thus defined between the first handle part 40 and the second handle part 42 has a square cross-sectional configuration. The actuator cable 180 extends from the guide tube 184 through the cable guide channel 194. The actuator cable 180 is freely slidable axially within the guide channel 194 but is constrained from radial movement within the guide channel by the channel walls 200 and 202.
The actuator cable 180 extends out of the guide channel 194 and passes between complementary, interengaging guide ribs 222 and 224 on the first handle part 40 and the trigger 60, respectively. The cable guide rib 222 on the first handle part 40 extends from the channel wall 200 along the inner side surface 50 of the main wall 46 of the first handle part. The guide rib 222 has an L-shaped cross-sectional configuration, as seen in FIG. 8. The guide rib 222 has an arcuate configuration centered on the pivot axis 52 (FIG. 6) of the trigger 60.
The guide rib 224 on the trigger 60 also has an arcuate configuration centered on the trigger pivot axis 52. The radius of curvature of the guide rib 224 on the trigger 60 is slightly less than the radius of curvature of the guide rib 222 on the first handle part 42. Thus, the guide rib 224 on the trigger 60 is closer to the trigger pivot axis 52 than is the guide rib 222 on the first handle part 42.
A second end portion 230 of the actuator cable 180 extends from the guide channel 194, radially between the two guide ribs 222 and 224, to a termination point 220 on the trigger 60 where it is clamped to the trigger. The actuator cable 180 is freely slidable axially between the two guide ribs 220 and 222, even during pivotal movement of the trigger 60, but is constrained from radial movement by the two guide ribs 222 and 224.
When the trigger 60 is pulled, the actuator cable 180 is tensioned. The tensile force on the actuator cable 180 is transmitted into the movable jaw 34 and causes the movable jaw to pivot from the open position shown in FIG. 2 to the closed position shown in FIG. 3. The movable jaw 34 moves relative to the fixed jaw 32 and relative to the flexible stem section 24.
Specifically, the actuator cable 180 applies force to the moment arm 244 of the movable jaw 34, where the actuator cable wraps around the arcuate guide surface 246 of the moment arm. The line of action of the force applied by the actuator cable 180 extends between the first end portion 154 of the extension spring 150 and the arcuate guide surface 246 on the moment arm 244. The resulting lever arm, that is, the perpendicular distance from the pivot pin 164 to the line of action of the force, increases as the movable jaw 34 pivots from the open position shown in FIG. 2 to the closed position shown in FIG. 3. As a result, the closing force of the movable jaw 34 is maximized.
The actuator cable 180 extends tangentially from the arcuate guide surface 246 on the moment arm 244. Also, the radius of curvature of the arcuate guide surface 246 is relatively large, taking into account the diameter and flexibility of the actuator cable 180. As a result, stress on the actuator cable 180 is minimized at the point where the actuator cable extends off the movable arm 34. The location of the cable end passage 248 away from the line of action of the force applied by the actuator cable 180 isolates the solder joint from the point of application of maximum force to the movable jaw 34. In addition, soldering the actuator cable 180 directly to the movable jaw 34 is a simple and relatively inexpensive procedure, which is desirable in the manufacture of a disposable surgical instrument such as the instrument 10.
Because the actuator cable 180 is constrained from radial movement along substantially its entire length between the trigger 60 and the movable jaw 34, the actuator cable is capable of transmitting a substantial amount of compressive force from the trigger 60 to the movable jaw 34. That is, when the trigger 60 is moved from the actuated position (not shown) to the unactuated position shown in FIG. 1, the force of the moving trigger is transmitted through the actuator cable 180 to cause the movable jaw 34 to move from the closed position shown in FIG. 3 to the open position shown in FIG. 2. This capability can aid in opening the surgical tool 30, for example, when there is a obstruction to the movement of the movable jaw 34. This capability exists even though the actuator cable 180 is flexible, which it needs to be so that it can bend during bending movement of the flexible stem section 24.
The flexible stem section 24 of the surgical instrument 10 can be bent to a plurality of different orientations relative to the longitudinal axis 82. The rib 108 on the interface element 90 acts as a fulcrum about which the flexible stem section 24 of the surgical instrument 10 is bendable. The surgical instrument 10 bends because of tension on one or the other of the deflection control wires 170 and 172, when the deflection control lever 70 is moved.
The end portions 174 and 176 of the deflection control wires 170 and 172 (FIG. 1) are connected with the deflection control lever 70 in a manner so that pivotal movement of the control lever in a first direction relative to the handle tensions the upper wire 170 and releases tension on the lower wire 172. Pivotal movement of the control lever 70 in a second direction, opposite to the first direction, releases tension on the upper wire 170 but tensions the lower wire 172.
For example, movement of the manually engageable portion of the deflection control lever 70 in a downward direction as viewed in FIG. 1 results in tensioning of the upper deflection control wire 170 and release of tension on the lower control wire 172. The flexible stem section 24 of the instrument 10 bends upward, as shown in FIG. 2.
Conversely, movement of the manually engageable portion of the deflection control lever 70 in an upward direction (not shown) as viewed in FIG. 1 results in tensioning of the lower deflection control wire 172 and release of tension on the upper control wire 170. The flexible stem section 24 of the instrument 10 bends downward.
The amount of bending of the flexible stem section 24 of the surgical instrument 10 is controlled by the amount of tension on the deflection control wires 170 and 172. This is controlled by the amount of movement of the deflection control lever 70 relative to the handle 12. It should be understood that the present invention is not limited to bending movement of, for example, 90� or more. Thus, the flexible stem section 24 might be independently bendable at, say, 18� at each of ten different locations along its length, thus providing a total of 180� of bending movement.
The surgical instrument 10 may be used in association with a cannula or other tubular member (not shown) which is used, in a known manner, to provide an open path through body tissue to an operating site. Once the cannula is properly positioned, the surgical instrument 10 is inserted axially through the cannula until at least the surgical tool 30 protrudes from the distal end of the cannula. A predetermined amount of the flexible stem section 24 of the surgical instrument 10 may also protrude from the distal end of the cannula. When the surgical instrument 10 is thus inserted through the cannula, and the deflection control lever 70 is moved, the flexible stem section 24 of the surgical instrument is bendable at about the location of the distal end of the cannula, to position the surgical tool 30 in the desired location. The distal end of the cannula acts as a fulcrum about which the flexible stem section 24 of the surgical instrument 10 bends. Depending on how much of the surgical instrument 10 protrudes from the distal end of the cannula, the surgical instrument bends through different arcuate paths of different lengths, at different locations along the length of the movable stem section 24.
The force transmitted by the actuator cable 180 places an axial load on the fixed jaw 32 of the surgical tool 30. The fixed jaw 32, and thus the surgical tool 30 as a whole, is urged in a direction toward the rigid stem section 20. This pulling force on the surgical tool 30 is transmitted through the fixed jaw 32 to the first end portion 152 of the extension spring 150. The length of the extension spring 150 is selected so that the extension spring carries substantially all axial load between the surgical tool 30 and the rigid stem section 20.
During use of the surgical instrument 10, the actuator cable 180 bends around a fixed (permanent) radius of about 0.060 inches on the moment arm 244 on the pivoting jaw 34. The actuator cable 180 is dynamically flexed around a radius of about 3/8" in the flexible stem section 24 of the surgical instrument 10. The cold-worked nickel--titanium has the good fatigue characteristics needed for these functions. There is no plastic deformation of the actuator cable 180 in the area of the flexible stem section 24.
The surgical instrument 10 is a disposable device designed for limited (preferably one-time) usage. It is contemplated that the actuator cable 180 would be exposed in its life to no more than 50 cycles of flexing. The preferred cold-worked nickel--titanium material has been tested to 1,000 cycles.
The actuator cable 180 has no shape memory characteristics because it is cold worked and has not been put through a heat cycle. The actuator cable 180 has no "spring" effect and does not bias the movable cutting jaw into either the open position or the closed position. The surgeon must pull the trigger 60 to close the jaws 32 and 34 and cut tissue, and must push the trigger back out in order to open the cutting jaws.
FIGS. 11 and 12 illustrate a portion of a surgical instrument 10a which is constructed in accordance with a second embodiment of the present invention. The surgical instrument 10a is generally similar in construction and operation to the surgical instrument 10. Parts of the surgical instrument 10a which are the same as or similar to corresponding parts of the surgical instrument 10 are given the same reference numerals with the suffix "a" attached for clarity.
In the surgical instrument 10a, the actuator cable 180a is made from the same cold-worked nickel--titanium material as the actuator cable 180 (FIGS. 1-10). In the surgical instrument 10a, a groove 280 is formed along two sides of the moment arm 244a so that the actuator cable 180a is at least partially enclosed. A first portion 282 of the groove 280 extends along the linear side 284 of the moment arm 244a extending between the cable end passage 248a and the arcuate guide surface 246a of the moment arm. A second portion 286 of the groove 280 extends along a part of the arcuate guide surface 246a of the moment arm 244a. The first end portion 182a of the actuator cable 180a is soldered to the movable jaw 34a along the length of the groove portions 282 and 286. This increased solder area can strengthen the connection between the actuator cable 180a and the movable jaw 34a. This stronger connection can enable more effective transmission of compressive force through the actuator cable 180a to move the movable jaw 34a from a closed condition (not shown) to the open condition shown in FIG. 11.
FIGS. 13 and 14 illustrate a portion of a surgical instrument 10b which is constructed in accordance with a third embodiment of the present invention. The surgical instrument 10b is generally similar in construction and operation to the surgical instrument 10. Parts of the surgical instrument 10b which are the same as or similar to corresponding parts of the surgical instrument 10 are given the same reference numerals with the suffix "b" attached for clarity.
In the surgical instrument 10b, the actuator cable 180b is made from the same cold-worked nickel--titanium material as the actuator cable 180 (FIGS. 1-10). In the surgical instrument 10b, the cable end passage 284b is formed in the moment arm 244b of the movable jaw 34b. A second cable passage 290 is formed in the movable jaw 34b, also in the moment arm 244b. The second cable passage 290 extends parallel to the cable end passage 248b, at a location spaced outwardly from the cable end passage relative to the pivot pin 164a. The actuator cable 180b extends directly from the second cable passage 290 in the moment arm 244b of the movable jaw 34b to the extension spring 150b (not shown in FIG. 13).
The actuator cable 180b is soldered in both passages 290b and 248b. This can provide increased strength for the connection between the actuator cable 180b and the movable jaw 34b, as compared to the cable connections illustrated with respect to the instruments 10 and 10a. This can, however, increase the stress on the actuator cable 180b at the location where the actuator cable exits the movable jaw 34b, when the jaw is in an open position such as shown in FIG. 13.
FIGS. 15 and 16 illustrate a portion of a surgical instrument 10c which is constructed in accordance with a fourth embodiment of the present invention. The surgical instrument 10c is generally similar in construction and operation to the surgical instrument 10b. Parts of the surgical instrument 10c which are the same as or similar to corresponding parts of the surgical instrument 10 are given the same reference numerals with the suffix "c" for clarity.
In the surgical instrument 10a, the actuator cable 180c is made from the same cold-worked nickel--titanium material as the actuator cable 180 (FIGS. 1-10). In the surgical instrument 10c, the second cable passage 290c is shorter than the second cable passage 290 (FIG. 13). The actuator cable 180c extends tangentially from an arcuate guide surface 246c on the moment arm 244c of the movable jaw 34c, at the location where the actuator cable exits the second cable passage. This design reduces the stress on the actuator cable 180c at the location where the actuator cable exits the movable jaw 34c.
From the above description of the invention, those skilled in the art will perceive improvements, changes and modifications in the invention. For example, the surgical tool 30 can have a different configuration and function so long as it has a movable part and a fixed part. Such improvements, changes and modifications within the skill of the art are intended to be covered by the appended claims.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS3470876 *Sep 28, 1966Oct 7, 1969John BarchilonDirigible catheterUS3605725 *Aug 7, 1968Sep 20, 1971Medi Tech IncControlled motion devicesUS4662371 *Jun 10, 1985May 5, 1987Whipple Terry LSurgical instrumentUS5300087 *Jan 26, 1993Apr 5, 1994Knoepfler Dennis JMultiple purpose forcepsUS5507773 *Feb 18, 1994Apr 16, 1996Ethicon Endo-SurgeryCable-actuated jaw assembly for surgical instrumentsUS5618294 *Jul 21, 1995Apr 8, 1997Aust & Taylor Medical CorporationSurgical instrumentUS5649955 *Mar 17, 1995Jul 22, 1997Terumo Kabushiki KaishaSurgical instrumentUS5899914 *Jun 11, 1997May 4, 1999Endius IncorporatedSurgical instrumentDE3920706A1 *Jun 24, 1989Jan 10, 1991Foerster ErnstCatheter for carrying out a biopsy - has mini-endoscope and a forceps combined with an inner sheath which slides in an outer sheathDE4136861A1 *Nov 11, 1991May 13, 1993Kernforschungsz KarlsruheControllable surgical instrument within trocar for min. invasive surgery - has manipulating and insertion parts, flexible part connected to end of insertion part which is movable and controllable, and effector fitted to flexible partDE4204051A1 *Feb 12, 1992Aug 19, 1993Karl Von RauchSurgical instrument for use in laparoscopic operations - has blade with combined rotary and longitudinal movementEP0301228A1 *Jun 20, 1988Feb 1, 1989Thyssen Stahl AktiengesellschaftProcess for producing hot-rolled stripFR2662778A1 * Title not availableWO1993000048A1 *Jun 25, 1992Jan 7, 1993Sgro Jean ClaudePositioning device for operating chirurgical instruments, particularly in celioscopic surgeryWO1993004634A1 *Aug 3, 1992Mar 18, 1993Surgical Dynamics, Inc.Bendable dissectomy probe and steerable cannulaWO1993020760A1 *Apr 13, 1993Oct 28, 1993Raychem CorporationA surgical device* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6514269 *Jun 4, 2001Feb 4, 2003Olympus Optical Co., Ltd.Endoscopic treating instrumentUS6602272Jun 29, 2001Aug 5, 2003Advanced Cardiovascular Systems, Inc.Devices configured from heat shaped, strain hardened nickel-titaniumUS6702821Aug 28, 2001Mar 9, 2004The Bonutti 2003 Trust AInstrumentation for minimally invasive joint replacement and methods for using sameUS6770078Oct 11, 2001Aug 3, 2004Peter M. BonuttiMovable knee implant and methods thereforUS7008375Mar 31, 2004Mar 7, 2006Surgical Solutions LlcArticulating shaftUS7553275Aug 25, 2005Jun 30, 2009Surgical Solutions LlcMedical device with articulating shaftUS7585300Dec 20, 2004Sep 8, 2009Spinascope, Inc.Dissecting high speed burr for spinal surgeryUS7670284Jun 8, 2007Mar 2, 2010Surgical Solutions LlcMedical device with articulating shaftUS7695479Apr 13, 2010Biomet Manufacturing Corp.Femoral sizerUS7695520Apr 13, 2010Biomet Manufacturing Corp.Prosthesis and implementation systemUS7704253Mar 6, 2006Apr 27, 2010Howmedica Osteonics Corp.Single use resection guideUS7708735Jul 19, 2005May 4, 2010Covidien AgIncorporating rapid cooling in tissue fusion heating processesUS7708740Jun 30, 2005May 4, 2010Marctec, LlcMethod for total knee arthroplasty and resecting bone in situUS7708741Jun 30, 2005May 4, 2010Marctec, LlcMethod of preparing bones for knee replacement surgeryUS7722607Nov 8, 2006May 25, 2010Covidien AgIn-line vessel sealer and dividerUS7749229Jul 6, 2010Marctec, LlcTotal knee arthroplasty through shortened incisionUS7762960Jul 27, 2010Boston Scientific Scimed, Inc.Biopsy forceps assembliesUS7771425Feb 6, 2006Aug 10, 2010Covidien AgVessel sealer and divider having a variable jaw clamping mechanismUS7776036Mar 13, 2003Aug 17, 2010Covidien AgBipolar concentric electrode assembly for soft tissue fusionUS7776037Aug 17, 2010Covidien AgSystem and method for controlling electrode gap during tissue sealingUS7780672Aug 24, 2010Biomet Manufacturing Corp.Femoral adjustment device and associated methodUS7789878Sep 7, 2010Covidien AgIn-line vessel sealer and dividerUS7789885Sep 7, 2010Biomet Manufacturing Corp.Instrumentation for knee resectionUS7799026Sep 21, 2010Covidien AgCompressible jaw configuration with bipolar RF output electrodes for soft tissue fusionUS7799028Sep 26, 2008Sep 21, 2010Covidien AgArticulating bipolar electrosurgical instrumentUS7806896Nov 25, 2003Oct 5, 2010Marctec, LlcKnee arthroplasty methodUS7806897Jun 30, 2005Oct 5, 2010Marctec, LlcKnee arthroplasty and preservation of the quadriceps mechanismUS7811283Oct 8, 2004Oct 12, 2010Covidien AgOpen vessel sealing instrument with hourglass cutting mechanism and over-ratchet safetyUS7828798Nov 9, 2010Covidien AgLaparoscopic bipolar electrosurgical instrumentUS7828852Mar 9, 2007Nov 9, 2010Marctec, Llc.Inlaid articular implantUS7837690Nov 23, 2010Biomet Manufacturing Corp.Method and apparatus for less invasive knee resectionUS7837736Oct 30, 2007Nov 23, 2010Marctec, LlcMinimally invasive surgical systems and methodsUS7846161Dec 7, 2010Covidien AgInsulating boot for electrosurgical forcepsUS7854738 *Dec 21, 2010Hansen Medical, Inc.Robotically controlled medical instrumentUS7857812Dec 18, 2006Dec 28, 2010Covidien AgVessel sealer and divider having elongated knife stroke and safety for cutting mechanismUS7879035Feb 1, 2011Covidien AgInsulating boot for electrosurgical forcepsUS7887536Aug 19, 2009Feb 15, 2011Covidien AgVessel sealing instrumentUS7887542Aug 31, 2004Feb 15, 2011Biomet Manufacturing Corp.Method and apparatus for less invasive knee resectionUS7892236Feb 22, 2011Marctec, LlcSystem and method for total joint replacementUS7896878Mar 12, 2009Mar 1, 2011Coviden AgVessel sealing instrumentUS7909823Jan 17, 2006Mar 22, 2011Covidien AgOpen vessel sealing instrumentUS7918011Apr 5, 2011Abbott Cardiovascular Systems, Inc.Method for providing radiopaque nitinol alloys for medical devicesUS7922718Oct 12, 2006Apr 12, 2011Covidien AgOpen vessel sealing instrument with cutting mechanismUS7922953Apr 12, 2011Covidien AgMethod for manufacturing an end effector assemblyUS7931649Apr 26, 2011Tyco Healthcare Group LpVessel sealing instrument with electrical cutting mechanismUS7931690Apr 26, 2011Marctec, LlcMethod of resurfacing an articular surface of a boneUS7935052Feb 14, 2007May 3, 2011Covidien AgForceps with spring loaded end effector assemblyUS7938843Jun 9, 2003May 10, 2011Abbott Cardiovascular Systems Inc.Devices configured from heat shaped, strain hardened nickel-titaniumUS7942892May 17, 2011Abbott Cardiovascular Systems Inc.Radiopaque nitinol embolic protection frameUS7947041May 24, 2011Covidien AgVessel sealing instrumentUS7951150May 31, 2011Covidien AgVessel sealer and divider with rotating sealer and cutterUS7955332Jun 7, 2011Covidien AgMechanism for dividing tissue in a hemostat-style instrumentUS7959635Jun 14, 2011Marctec, Llc.Limited incision total joint replacement methodsUS7963965Jun 21, 2011Covidien AgBipolar electrosurgical instrument for sealing vesselsUS7976648Jul 12, 2011Abbott Cardiovascular Systems Inc.Heat treatment for cold worked nitinol to impart a shape setting capability without eventually developing stress-induced martensiteUS8016827Oct 9, 2008Sep 13, 2011Tyco Healthcare Group LpApparatus, system, and method for performing an electrosurgical procedureUS8070746Dec 6, 2011Tyco Healthcare Group LpRadiofrequency fusion of cardiac tissueUS8070752Jan 9, 2008Dec 6, 2011Biomet Manufacturing Corp.Patient specific alignment guide and inter-operative adjustmentUS8083759Oct 29, 2008Dec 27, 2011Refocus Ocular, Inc.Apparatuses and methods for forming incisions in ocular tissueUS8123743Jul 29, 2008Feb 28, 2012Covidien AgMechanism for dividing tissue in a hemostat-style instrumentUS8123758Feb 9, 2009Feb 28, 2012Biomet Manufacturing Corp.Femoral guide for implanting a femoral knee prosthesisUS8133229Oct 14, 2003Mar 13, 2012Marctec, Llc.Knee arthroplasty methodUS8142473Mar 27, 2012Tyco Healthcare Group LpMethod of transferring rotational motion in an articulating surgical instrumentUS8147489Feb 17, 2011Apr 3, 2012Covidien AgOpen vessel sealing instrumentUS8157817Jan 21, 2003Apr 17, 2012Atropos LimitedSurgical instrumentUS8162940Sep 5, 2007Apr 24, 2012Covidien AgVessel sealing instrument with electrical cutting mechanismUS8162973Aug 15, 2008Apr 24, 2012Tyco Healthcare Group LpMethod of transferring pressure in an articulating surgical instrumentUS8177794Oct 5, 2007May 15, 2012Tyco Healthcare Group LpFlexible endoscopic stitching devicesUS8192433Aug 21, 2007Jun 5, 2012Covidien AgVessel sealing instrument with electrical cutting mechanismUS8197479Dec 10, 2008Jun 12, 2012Tyco Healthcare Group LpVessel sealer and dividerUS8197633Mar 15, 2011Jun 12, 2012Covidien AgMethod for manufacturing an end effector assemblyUS8211105May 7, 2007Jul 3, 2012Covidien AgElectrosurgical instrument which reduces collateral damage to adjacent tissueUS8221416Jul 17, 2012Tyco Healthcare Group LpInsulating boot for electrosurgical forceps with thermoplastic clevisUS8221424Sep 3, 2009Jul 17, 2012Spinascope, Inc.Surgical instrument for orthopedic surgeryUS8235992Aug 7, 2012Tyco Healthcare Group LpInsulating boot with mechanical reinforcement for electrosurgical forcepsUS8235993Sep 24, 2008Aug 7, 2012Tyco Healthcare Group LpInsulating boot for electrosurgical forceps with exohinged structureUS8236025Aug 7, 2012Tyco Healthcare Group LpSilicone insulated electrosurgical forcepsUS8241282Sep 5, 2008Aug 14, 2012Tyco Healthcare Group LpVessel sealing cutting assembliesUS8241283Sep 17, 2008Aug 14, 2012Tyco Healthcare Group LpDual durometer insulating boot for electrosurgical forcepsUS8241284Aug 14, 2012Covidien AgVessel sealer and divider with non-conductive stop membersUS8246637Oct 5, 2007Aug 21, 2012Tyco Healthcare Group LpFlexible endoscopic stitching devicesUS8251996Sep 23, 2008Aug 28, 2012Tyco Healthcare Group LpInsulating sheath for electrosurgical forcepsUS8257352Sep 4, 2012Covidien AgBipolar forceps having monopolar extensionUS8257387Aug 15, 2008Sep 4, 2012Tyco Healthcare Group LpMethod of transferring pressure in an articulating surgical instrumentUS8265949Sep 11, 2012Depuy Products, Inc.Customized patient surgical planUS8267935Apr 4, 2007Sep 18, 2012Tyco Healthcare Group LpElectrosurgical instrument reducing current densities at an insulator conductor junctionUS8267936Sep 18, 2012Tyco Healthcare Group LpInsulating mechanically-interfaced adhesive for electrosurgical forcepsUS8267951Sep 18, 2012Ncontact Surgical, Inc.Dissecting cannula and methods of use thereofUS8277443Oct 2, 2012Kabushiki Kaisha ToshibaManipulatorUS8292905Oct 5, 2007Oct 23, 2012Tyco Healthcare Group LpFlexible endoscopic stitching devicesUS8292906Oct 5, 2007Oct 23, 2012Tyco Healthcare Group LpFlexible endoscopic stitching devicesUS8298228Sep 16, 2008Oct 30, 2012Coviden AgElectrosurgical instrument which reduces collateral damage to adjacent tissueUS8298232Oct 30, 2012Tyco Healthcare Group LpEndoscopic vessel sealer and divider for large tissue structuresUS8303582Nov 6, 2012Tyco Healthcare Group LpElectrosurgical instrument having a coated electrode utilizing an atomic layer deposition techniqueUS8303586Nov 6, 2012Covidien AgSpring loaded reciprocating tissue cutting mechanism in a forceps-style electrosurgical instrumentUS8317726Nov 27, 2012Boston Scientific Scimed, Inc.Biopsy forceps assembliesUS8317787Aug 28, 2008Nov 27, 2012Covidien LpTissue fusion jaw angle improvementUS8333765Dec 18, 2012Covidien AgVessel sealing instrument with electrical cutting mechanismUS8337515Oct 5, 2007Dec 25, 2012Covidien LpFlexible endoscopic stitching devicesUS8337521Nov 17, 2010Dec 25, 2012Intuitive Surgical Operations, Inc.Flexible wrist for surgical toolUS8343159Jan 1, 2013Depuy Products, Inc.Orthopaedic bone saw and method of use thereofUS8348948Jul 29, 2010Jan 8, 2013Covidien AgVessel sealing system using capacitive RF dielectric heatingUS8357111Jan 22, 2013Depuy Products, Inc.Method and system for designing patient-specific orthopaedic surgical instrumentsUS8357166Sep 29, 2008Jan 22, 2013Depuy Products, Inc.Customized patient-specific instrumentation and method for performing a bone re-cutUS8361071Aug 28, 2008Jan 29, 2013Covidien AgVessel sealing forceps with disposable electrodesUS8361072Nov 19, 2010Jan 29, 2013Covidien AgInsulating boot for electrosurgical forcepsUS8361076Jan 29, 2013Depuy Products, Inc.Patient-customizable device and system for performing an orthopaedic surgical procedureUS8366709Dec 27, 2011Feb 5, 2013Covidien AgArticulating bipolar electrosurgical instrumentUS8377068Sep 29, 2008Feb 19, 2013DePuy Synthes Products, LLC.Customized patient-specific instrumentation for use in orthopaedic surgical proceduresUS8382754Feb 26, 2013Covidien AgElectrosurgical forceps with slow closure sealing plates and method of sealing tissueUS8394095Jan 12, 2011Mar 12, 2013Covidien AgInsulating boot for electrosurgical forcepsUS8394096Mar 12, 2013Covidien AgOpen vessel sealing instrument with cutting mechanismUS8398618Mar 19, 2013Karl Storz Gmbh & Co. KgMedical instrument with a detentUS8398620Mar 19, 2013Karl Storz Gmbh & Co. KgMedical instrument with a rotatable detentUS8398645Mar 19, 2013DePuy Synthes Products, LLCFemoral tibial customized patient-specific orthopaedic surgical instrumentationUS8419720Feb 7, 2012Apr 16, 2013National Advanced Endoscopy Devices, IncorporatedFlexible laparoscopic deviceUS8425504Apr 23, 2013Covidien LpRadiofrequency fusion of cardiac tissueUS8425522Apr 23, 2013Bonutti Skeletal Innovations LlcJoint replacement methodUS8449530May 28, 2013Karl Storz Gmbh & Co. KgMedical instrument with a lockable bend control mechanismUS8454602Jun 4, 2013Covidien LpApparatus, system, and method for performing an electrosurgical procedureUS8454631Jul 9, 2012Jun 4, 2013Covidien LpAxial stitching devicesUS8460275Oct 5, 2007Jun 11, 2013Covidien LpFlexible endoscopic stitching devicesUS8460325Jun 11, 2013Refocus Ocular, Inc.Apparatuses and methods for forming incisions in ocular tissueUS8469956Jul 21, 2008Jun 25, 2013Covidien LpVariable resistor jawUS8469957Oct 7, 2008Jun 25, 2013Covidien LpApparatus, system, and method for performing an electrosurgical procedureUS8475453Mar 5, 2010Jul 2, 2013Covidien LpEndoscopic vessel sealer and divider having a flexible articulating shaftUS8486107Oct 20, 2008Jul 16, 2013Covidien LpMethod of sealing tissue using radiofrequency energyUS8490713Oct 1, 2010Jul 23, 2013Covidien LpHandle assembly for endoscopic suturing deviceUS8496656Jan 16, 2009Jul 30, 2013Covidien AgTissue sealer with non-conductive variable stop members and method of sealing tissueUS8496674Oct 5, 2007Jul 30, 2013Covidien LpFlexible endoscopic stitching devicesUS8506581Jan 7, 2013Aug 13, 2013Covidien LpFlexible endoscopic stitching devicesUS8518047Aug 3, 2010Aug 27, 2013Biomet Manufacturing, LlcMethod and apparatus for less invasive knee resectionUS8523898Aug 10, 2012Sep 3, 2013Covidien LpEndoscopic electrosurgical jaws with offset knifeUS8535312Sep 25, 2008Sep 17, 2013Covidien LpApparatus, system and method for performing an electrosurgical procedureUS8551091Mar 30, 2011Oct 8, 2013Covidien AgVessel sealing instrument with electrical cutting mechanismUS8551100Jan 23, 2006Oct 8, 2013Biomet Manufacturing, LlcInstrumentation for knee resectionUS8568444Mar 7, 2012Oct 29, 2013Covidien LpMethod of transferring rotational motion in an articulating surgical instrumentUS8591506Oct 16, 2012Nov 26, 2013Covidien AgVessel sealing systemUS8597296Aug 31, 2012Dec 3, 2013Covidien AgBipolar forceps having monopolar extensionUS8597297Aug 29, 2006Dec 3, 2013Covidien AgVessel sealing instrument with multiple electrode configurationsUS8597318Aug 8, 2011Dec 3, 2013Refocus Group, Inc.Apparatus and method for forming incisions in ocular tissueUS8623017Jul 23, 2009Jan 7, 2014Covidien AgOpen vessel sealing instrument with hourglass cutting mechanism and overratchet safetyUS8623030Mar 14, 2013Jan 7, 2014Bonutti Skeletal Innovations LlcRobotic arthroplasty system including navigationUS8623276Feb 9, 2009Jan 7, 2014Covidien LpMethod and system for sterilizing an electrosurgical instrumentUS8628545Jun 10, 2009Jan 14, 2014Covidien LpEndoscopic stitching devicesUS8632552Mar 14, 2013Jan 21, 2014Bonutti Skeletal Innovations LlcMethod of preparing a femur and tibia in knee arthroplastyUS8636752Apr 23, 2012Jan 28, 2014Covidien LpFlexible endoscopic stitching devicesUS8636761Oct 9, 2008Jan 28, 2014Covidien LpApparatus, system, and method for performing an endoscopic electrosurgical procedureUS8641713Sep 15, 2010Feb 4, 2014Covidien AgFlexible endoscopic catheter with ligasureUS8641726Mar 14, 2013Feb 4, 2014Bonutti Skeletal Innovations LlcMethod for robotic arthroplasty using navigationUS8647341Oct 27, 2006Feb 11, 2014Covidien AgVessel sealer and divider for use with small trocars and cannulasUS8668689Apr 19, 2010Mar 11, 2014Covidien AgIn-line vessel sealer and dividerUS8672859Oct 23, 2012Mar 18, 2014Boston Scientific Scimed, Inc.Biopsy forceps assembliesUS8679114Apr 23, 2010Mar 25, 2014Covidien AgIncorporating rapid cooling in tissue fusion heating processesUS8690908Dec 3, 2012Apr 8, 2014Intuitive Surgical Operations, Inc.Flexible wrist for surgical toolUS8696667Aug 9, 2012Apr 15, 2014Covidien LpDual durometer insulating boot for electrosurgical forcepsUS8721640Oct 5, 2007May 13, 2014Covidien LpEndoscopic vessel sealer and divider having a flexible articulating shaftUS8734443Sep 19, 2008May 27, 2014Covidien LpVessel sealer and divider for large tissue structuresUS8740901Jan 20, 2010Jun 3, 2014Covidien AgVessel sealing instrument with electrical cutting mechanismUS8747424Oct 5, 2012Jun 10, 2014Covidien LpFlexible endoscopic stitching devicesUS8764748Jan 28, 2009Jul 1, 2014Covidien LpEnd effector assembly for electrosurgical device and method for making the sameUS8764780Dec 7, 2011Jul 1, 2014Refocus Ocular, Inc.Apparatuses and methods for forming incisions in ocular tissueUS8771300Oct 14, 2011Jul 8, 2014Refocus Ocular, Inc.Apparatuses and methods for forming incisions in ocular tissueUS8772030Sep 26, 2011Jul 8, 2014Universita Degli Studi Di Roma “La Sapienza”Cardiac stem cells and methods for isolation of sameUS8784417Aug 28, 2008Jul 22, 2014Covidien LpTissue fusion jaw angle improvementUS8784495Jun 8, 2010Jul 22, 2014Bonutti Skeletal Innovations LlcSegmental knee arthroplastyUS8790243Feb 3, 2011Jul 29, 2014Intuitive Surgical Operations, Inc.Flexible wrist for surgical toolUS8795274Aug 28, 2008Aug 5, 2014Covidien LpTissue fusion jaw angle improvementUS8795325Oct 4, 2007Aug 5, 2014Covidien LpHandle assembly for articulated endoscopic instrumentsUS8834486Feb 21, 2012Sep 16, 2014Biomet Manufacturing, LlcFemoral guide for implanting a femoral knee prosthesisUS8834490Oct 29, 2013Sep 16, 2014Bonutti Skeletal Innovations LlcMethod for robotic arthroplasty using navigationUS8840629Oct 29, 2013Sep 23, 2014Bonutti Skeletal Innovations LlcRobotic arthroplasty system including navigationUS8846396Aug 22, 2011Sep 30, 2014Universita Degli Studi Di Roma “La Sapienza”Methods for the isolation of cardiac stem cellsUS8852228Feb 8, 2012Oct 7, 2014Covidien LpApparatus, system, and method for performing an electrosurgical procedureUS8858528Apr 23, 2008Oct 14, 2014Ncontact Surgical, Inc.Articulating cannula access deviceUS8858554Jun 4, 2013Oct 14, 2014Covidien LpApparatus, system, and method for performing an electrosurgical procedureUS8858557Oct 29, 2013Oct 14, 2014Bonutti Skeletal Innovations LlcMethod of preparing a femur and tibia in knee arthroplastyUS8864776Mar 31, 2009Oct 21, 2014Covidien LpDeployment system for surgical sutureUS8870867Mar 23, 2011Oct 28, 2014Aesculap AgArticulable electrosurgical instrument with a stabilizable articulation actuatorUS8870883Jan 28, 2011Oct 28, 2014Biomet Manufacturing, LlcMethod for less invasive knee resectionUS8882766Jan 24, 2006Nov 11, 2014Covidien AgMethod and system for controlling delivery of energy to divide tissueUS8898888Jan 26, 2012Dec 2, 2014Covidien LpSystem for manufacturing electrosurgical seal platesUS8911428Mar 7, 2012Dec 16, 2014Intuitive Surgical Operations, Inc.Apparatus for pitch and yaw rotationUS8945125Sep 10, 2010Feb 3, 2015Covidien AgCompressible jaw configuration with bipolar RF output electrodes for soft tissue fusionUS8945166Nov 1, 2013Feb 3, 2015Refocus Group, Inc.Apparatus and method for forming incisions in ocular tissueUS8961514Mar 6, 2012Feb 24, 2015Covidien LpArticulating surgical apparatusUS8968314Sep 25, 2008Mar 3, 2015Covidien LpApparatus, system and method for performing an electrosurgical procedureUS8968340Feb 2, 2012Mar 3, 2015Covidien LpSingle actuating jaw flexible endolumenal stitching deviceUS8968342Jul 29, 2013Mar 3, 2015Covidien LpFlexible endoscopic stitching devicesUS8992557Aug 16, 2012Mar 31, 2015Ncontact Surgical, Inc.Dissecting cannula and methods of use thereofUS9005112Mar 29, 2012Apr 14, 2015Intuitive Surgical Operations, Inc.Articulate and swapable endoscope for a surgical robotUS9023043Sep 23, 2008May 5, 2015Covidien LpInsulating mechanically-interfaced boot and jaws for electrosurgical forcepsUS9023053Oct 7, 2013May 5, 2015Biomet Manufacturing, LlcInstrumentation for knee resectionUS9028493Mar 8, 2012May 12, 2015Covidien LpIn vivo attachable and detachable end effector assembly and laparoscopic surgical instrument and methods thereforUS9050727 *Nov 29, 2011Jun 9, 2015Olympus CorporationMaster operation input device and master-slave manipulatorUS9060797Aug 5, 2014Jun 23, 2015Bonutti Skeletal Innovations LlcMethod of preparing a femur and tibia in knee arthroplastyUS9095317Jul 2, 2012Aug 4, 2015Intuitive Surgical Operations, Inc.Flexible wrist for surgical toolUS9095347Sep 18, 2008Aug 4, 2015Covidien AgElectrically conductive/insulative over shoe for tissue fusionUS9101443Feb 29, 2012Aug 11, 2015Bonutti Skeletal Innovations LlcMethods for robotic arthroplastyUS9107672Jul 19, 2006Aug 18, 2015Covidien AgVessel sealing forceps with disposable electrodesUS9113860Dec 18, 2012Aug 25, 2015Covidien LpFlexible endoscopic stitching devicesUS9113898Sep 9, 2011Aug 25, 2015Covidien LpApparatus, system, and method for performing an electrosurgical procedureUS9113903Oct 29, 2012Aug 25, 2015Covidien LpEndoscopic vessel sealer and divider for large tissue structuresUS9113905Jun 20, 2013Aug 25, 2015Covidien LpVariable resistor jawUS9113940Feb 22, 2012Aug 25, 2015Covidien LpTrigger lockout and kickback mechanism for surgical instrumentsUS9149323Jan 25, 2010Oct 6, 2015Covidien AgMethod of fusing biomaterials with radiofrequency energyUS9192459Apr 22, 2014Nov 24, 2015Bonutti Skeletal Innovations LlcMethod of performing total knee arthroplastyUS9204924Jun 11, 2013Dec 8, 2015Covidien LpEndoscopic vessel sealer and divider having a flexible articulating shaftUS9211134Apr 9, 2012Dec 15, 2015Carefusion 2200, Inc.Wrist assembly for articulating laparoscopic surgical instrumentsUS9226760 *May 7, 2010Jan 5, 2016Ethicon Endo-Surgery, Inc.Laparoscopic devices with flexible actuation mechanismsUS9247988Jul 21, 2015Feb 2, 2016Covidien LpVariable resistor jawUS9249392Apr 28, 2011Feb 2, 2016Cedars-Sinai Medical CenterMethods and compositions for maintaining genomic stability in cultured stem cellsUS9265552Dec 2, 2014Feb 23, 2016Covidien LpMethod of manufacturing electrosurgical seal platesUS9271702Feb 15, 2013Mar 1, 2016Karl Storz Gmbh & Co. KgMedical instrument with a detentUS9271720Aug 8, 2006Mar 1, 2016Biomet Sports Medicine, LlcSteerable suture passing deviceUS9271723May 30, 2013Mar 1, 2016Covidien LpFlexible endoscopic stitching devicesUS9302073May 2, 2013Apr 5, 2016Karl Storz Gmbh & Co. KgMedical instrument with a lockable bend control mechanismUS9308012Feb 3, 2015Apr 12, 2016Covidien LpArticulating surgical apparatusUS9333001Sep 7, 2010May 10, 2016Ethicon Endo-Surgery, Inc.Articulable laparoscopic instrumentUS9339286Mar 1, 2010May 17, 2016Surgical Solutions LlcMedical device with articulating shaftUS9345535Oct 14, 2014May 24, 2016Covidien LpApparatus, system and method for performing an electrosurgical procedureUS9375254Sep 25, 2008Jun 28, 2016Covidien LpSeal and separate algorithmUS9375270Nov 5, 2013Jun 28, 2016Covidien AgVessel sealing systemUS9375271Nov 5, 2013Jun 28, 2016Covidien AgVessel sealing systemUS9433725Nov 27, 2012Sep 6, 2016Alcon Research, Ltd.Combined coaxial and bimanual irrigation/aspiration apparatusUS9439693Feb 1, 2013Sep 13, 2016DePuy Synthes Products, Inc.Steerable needle assembly for use in vertebral body augmentationUS20030158575 *Feb 12, 2003Aug 21, 2003Boylan John F.Devices configured from strain hardened Ni Ti tubingUS20030236549 *Jan 21, 2003Dec 25, 2003Frank BonadioSurgical instrumentUS20040199051 *Mar 31, 2004Oct 7, 2004Thomas WeiselArticulating shaftUS20050165420 *Dec 20, 2004Jul 28, 2005Cha Charles W.Dissecting high speed burr for spinal surgeryUS20070038230 *Aug 8, 2006Feb 15, 2007Arthrotek, Inc.Steerable suture passing deviceUS20070208349 *Mar 6, 2006Sep 6, 2007Howmedica Osteonics Corp.Single use resection guideUS20080177284 *Jan 31, 2008Jul 24, 2008Hansen Medical, Inc.Robotically controlled medical instrumentUS20080249527 *Apr 4, 2007Oct 9, 2008Tyco Healthcare Group LpElectrosurgical instrument reducing current densities at an insulator conductor junctionUS20090010796 *Sep 17, 2008Jan 8, 2009Paracor Medical, Inc.Long fatigue life nitinolUS20090012422 *Nov 8, 2005Jan 8, 2009Eduardo MarbanBioptomeUS20090112229 *Nov 13, 2007Apr 30, 2009Terumo Kabushiki KaishaManipulator for medical useUS20090112230 *Oct 30, 2008Apr 30, 2009Kabushiki Kaisha ToshibaManipulatorUS20090157109 *Oct 29, 2008Jun 18, 2009Refocus Ocular, Inc.Apparatuses and methods for forming incisions in ocular tissueUS20090247994 *Mar 31, 2009Oct 1, 2009Uwe BacherMedical Instrument With A Lockable Bend Control MechanismUS20090247995 *Mar 31, 2009Oct 1, 2009Uwe BacherMedical Instrument With A DetentUS20090248053 *Mar 31, 2009Oct 1, 2009Uwe BacherMedical instrument with a flexible insertUS20090259233 *Mar 31, 2009Oct 15, 2009Michael BogartDeployment System For Surgical SutureUS20090270676 *Oct 29, 2009Ncontact Surgical, Inc.Articulating cannula access deviceUS20090312783 *Jul 16, 2008Dec 17, 2009Ncontact Surgical, Inc.Dissecting cannula and methods of use thereofUS20100010512 *Oct 5, 2007Jan 14, 2010Taylor Eric JFlexible endoscopic stitching devicesUS20100076260 *Oct 4, 2007Mar 25, 2010Taylor Eric JHandle Assembly for Articulated Endoscopic InstrumentsUS20100076460 *Oct 5, 2007Mar 25, 2010Taylor Eric JFlexible endoscopic stitching devicesUS20100076461 *Oct 5, 2007Mar 25, 2010Frank ViolaFlexible endoscopic stitching devicesUS20100094289 *Oct 5, 2007Apr 15, 2010Taylor Eric JEndoscopic Vessel Sealer and Divider Having a Flexible Articulating ShaftUS20100125329 *Dec 19, 2002May 20, 2010Zhi Cheng LinPseudoelastic stents having a drug coating and a method of producing the sameUS20100160914 *Mar 1, 2010Jun 24, 2010Howmedica Osteonics Corp.Single use resection guideUS20100268268 *Oct 21, 2010Uwe BacherMedical Instrument With A Rotatable DetentUS20100280526 *Apr 28, 2010Nov 4, 2010Arch Day Design, LlcMedical Device With Articulating Shaft MechanismUS20110028991 *Sep 29, 2010Feb 3, 2011Intuitive Surgical Operations, Inc.Cardiac Tissue Ablation Instrument with Flexible WristUS20110087236 *May 7, 2010Apr 14, 2011Ethicon Endo-Surgery, Inc.Laparoscopic device with compound angulationUS20110118755 *Nov 17, 2010May 19, 2011Intuitive Surgical Operations, Inc.Flexible Wrist for Surgical ToolUS20110144656 *Dec 6, 2010Jun 16, 2011Hansen Medical, Inc.Robotically controlled medical instrumentUS20110276084 *Nov 10, 2011Ethicon Endo-Surgery, Inc.Laparoscopic devices with flexible actuation mechanismsUS20120143353 *Nov 29, 2011Jun 7, 2012Olympus CorporationMaster operation input device and master-slave manipulatorUSD649249Nov 22, 2011Tyco Healthcare Group LpEnd effectors of an elongated dissecting and dividing instrumentUSD680220Apr 16, 2013Coviden IPSlider handle for laparoscopic deviceUSD708746Apr 8, 2013Jul 8, 2014Covidien LpHandle for surgical deviceUSRE44834Dec 7, 2012Apr 8, 2014Covidien AgInsulating boot for electrosurgical forcepsUSRE44883Apr 30, 2013May 6, 2014Spinascope, Inc.Surgical instrument for orthopedic surgeryUSRE44896Apr 30, 2013May 13, 2014Spinascope, Inc.Dissecting high speed burr for spinal surgeryCN101854891BOct 30, 2008Jul 4, 2012重新聚焦集团公司Apparatuses and methods for forming incisions in ocular tissueDE102008017298A1 *Mar 31, 2008Oct 1, 2009Karl Storz Gmbh & Co. KgMedizinisches Instrument mit flexiblem EinsatzDE102008017299A1 *Mar 31, 2008Oct 1, 2009Karl Storz Gmbh & Co. KgMedizinisches Instrument mit einer RastsperreDE102008017300A1 *Mar 31, 2008Oct 1, 2009Karl Storz Gmbh & Co. KgMedizinisches Instrument mit arretierbarer AbwinkelsteuerungDE102009007722A1Jan 29, 2009Aug 26, 2010Karl Storz Gmbh & Co. KgNeedle holder insert for medical instrument, comprises shaft, whose distal end is curved, and actuating element, which has stop, where primary side of medical needle is attached to stop, and has gripping elementDE102009018638A1Apr 17, 2009Oct 21, 2010Karl Storz Gmbh & Co. KgMedizinisches Instrument mit einer drehbaren RastsperreEP1575439A2 *Dec 2, 2003Sep 21, 2005Intuitive Surgical, Inc.Flexible wrist for surgical toolEP1838220A2 *Nov 8, 2005Oct 3, 2007The Johns Hopkins UniversityBioptomeEP1992293A2 *Mar 28, 2008Nov 19, 2008Ovesco Endoscopy GmbHMedical gripping deviceEP2044892A2 *Oct 3, 2008Apr 8, 2009Tyco Healthcare Group LPSurgical stapling apparatusEP2240095A2 *Feb 6, 2009Oct 20, 2010Aragon Surgical Inc.Method and apparatus for articulating the wrist of a laparoscopic grasping instrumentEP2240095A4 *Feb 6, 2009Nov 7, 2012Aesculap AgMethod and apparatus for articulating the wrist of a laparoscopic grasping instrumentEP2241272A1Apr 15, 2010Oct 20, 2010Karl Storz GmbH & Co. KGMedicinal instrument with a rotatable break blockEP2359767A2 *Dec 2, 2003Aug 24, 2011Intuitive Surgical, Inc.Flexible wrist for surgical toolEP2359768A2 *Dec 2, 2003Aug 24, 2011Intuitive Surgical, Inc.Flexible wrist for surgical toolEP2514395A1 *Oct 30, 2008Oct 24, 2012Refocus Group, Inc.Apparatuses and methods for forming incisions in ocular tissueEP2567669A1 *Sep 4, 2012Mar 13, 2013Imris Inc.Surgical tool for use in MR imagingEP2865351A1 *Dec 2, 2003Apr 29, 2015Intuitive Surgical, Inc.Flexible wrist for surgical toolEP2901959A1 *Dec 2, 2003Aug 5, 2015Intuitive Surgical, Inc.Flexible wrist for surgical toolWO2003002166A1 *Jun 4, 2002Jan 9, 2003Advanced Cardiovascular Systems, Inc.Cold worked nickel-titanium divicesWO2009067325A1Oct 30, 2008May 28, 2009Refocus Group, Inc.Apparatuses and methods for forming incisions in ocular tissue* Cited by examinerClassifications U.S. Classification606/170, 606/205International ClassificationA61B10/00, A61B17/00, A61B17/28, A61B10/06, A61B17/32Cooperative ClassificationA61B17/29, A61B2017/2905, A61B2017/2925, A61B2017/00867, A61B2017/2927, A61B2017/00314, A61B17/1608, A61B2017/00327, A61B10/06European ClassificationA61B17/16C2ELegal EventsDateCodeEventDescriptionMay 28, 1999ASAssignmentOwner name: ENDIUS INC., MASSACHUSETTSFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAYLOR, TIMOTHY E.;ZIRPS, CHRISTOPHER;REEL/FRAME:010013/0715;SIGNING DATES FROM 19990511 TO 19990513Sep 26, 2003FPAYFee paymentYear of fee payment: 4Dec 20, 2007FPAYFee paymentYear of fee payment: 8Dec 31, 2007REMIMaintenance fee reminder mailedJan 22, 2009ASAssignmentOwner name: ZIMMER SPINE, INC., MINNESOTAFree format text: MERGER;ASSIGNOR:ENDIUS INCORPORATED;REEL/FRAME:022143/0280Effective date: 20071221Owner name: ZIMMER SPINE, INC.,MINNESOTAFree format text: MERGER;ASSIGNOR:ENDIUS INCORPORATED;REEL/FRAME:022143/0280Effective date: 20071221Sep 23, 2011FPAYFee paymentYear of fee payment: 12RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services