Flexible endoluminal surgical instrument

• US 20080257935A1
• Filed: 04/17/2007
• Published: 10/23/2008
• Est. Priority Date: 04/17/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Viola, Frank J.
• Granted Patent: US 7,708,182 B2
• Time in Patent Office: Days
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/2903 transferring rotary motion
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/2943 Toothed members, e.g. rack and pinion

Abstract

A surgical instrument comprises a first elongated member and a second elongated member, the first elongated member and the second elongated member being operatively connected and configured to rotate in opposite directions to substantially limit counter torque. The first and second elongated members are flexible shafts. The surgical instrument can be configured to apply fasteners to a tissue portion. This embodiment of the surgical instrument includes a cartridge having a plurality of fasteners, an anvil, said anvil and cartridge being relatively movable between spaced and approximated positions, and a sled disposed in the cartridge. The sled includes a cam member. The cam member is designed to drive the fasteners through tissue and toward the anvil.

Claims

1. A surgical instrument, comprising:

an end effector;

a first elongated member and a second elongated member, the first elongated member and the second elongated member being operatively connected to each other and configured to rotate in opposite directions to cooperatively actuate said end effector without a substantial torque effect.

2. The surgical instrument according to claim 1, wherein the first and second elongated members are flexible shafts.

3. The surgical instrument according to claim 1, wherein the end effector comprises a cartridge having a plurality of fasteners and an anvil.

4. The surgical instrument according to claim 1, further comprising at least one shaft operatively connected to the first and second elongate members and adapted to relatively move the anvil and the cartridge between spaced and approximated positions.

5. The surgical instrument according to claim 4, wherein the at least one shaft is a lead screw.

6. The surgical instrument according to claim 3, further comprising a sled disposed in the cartridge, the sled being adapted to drive the fasteners through tissue and toward the anvil.

7. The surgical instrument according to claim 6, further comprising at least one drive member operatively connected to the first and second elongate members and adapted to axially move the sled.

8. The surgical instrument according to claim 7, wherein the at least one drive member is a lead screw.

9. The surgical instrument according to claim 3, further comprising a channel, the channel at least partially encompassing the cartridge.

10. The surgical instrument according to claim 9, further comprising a flexible neck secured to the channel.

11. The surgical instrument according to claim 1, further comprising at least one pinion.

12. The surgical instrument according to claim 11, wherein the at least one pinion is operatively connected to the first elongated member.

13. The surgical instrument according to claim 11, wherein the at least one pinion is operatively connected to the second elongated member.

14. The surgical instrument according to claim 11, further comprising at least one gear coupler adapted for longitudinal connection with the at least one pinion.

15. The surgical instrument according to claim 14, wherein the at least gear coupler is operatively connected to at least one drive member.

16. A surgical instrument, comprising:

an actuation apparatus, the actuation apparatus adapted to actuate an end effector including;

a cartridge having a plurality of fasteners;

an anvil, the anvil and the cartridge being relatively movable between spaced and approximated positions;

a sled disposed in the cartridge, the sled being designed to drive the fasteners through tissue and toward the anvil; and

a first elongated member and a second elongated member, the first elongated member and the second elongated member being operatively connected to each other and configured to rotate in opposite directions to cooperatively actuate said end effector without a substantial torque effect.

17. The surgical instrument according to claim 16, wherein the first and second elongated members are flexible shafts.

18. The surgical instrument according to claim 16, further comprising a channel, the channel at least partially encompassing the cartridge.

19. The surgical instrument according to claim 18, further comprising a flexible neck secured to the channel.

20. The surgical instrument according to claim 16, further comprising at least one shaft adapted to relatively move the anvil and the cartridge between spaced and approximated positions.

21. The surgical instrument according to claim 20, wherein the at least one shaft is a lead screw.

22. The surgical instrument according to claim 16, further comprising at least one drive member operatively connected to the first and second elongate members and adapted to axially move the sled.

23. The surgical instrument according to claim 22, wherein the at least one drive member is a lead screw.

24. The surgical instrument according to claim 16, further comprising at least one pinion.

25. The surgical instrument according to claim 24, wherein the at least one pinion is operatively connected to the first elongated member.

26. The surgical instrument according to claim 24, wherein the at least one pinion is operatively connected to the second elongated member.

27. The surgical instrument according to claim 24, further comprising at least one gear coupler adapted for longitudinal connection with the at least one pinion.

28. The surgical instrument according to claim 27, wherein the at least one gear coupler is operatively connected to at least one drive member.