SURGICAL INSTRUMENT WITH DOUBLE CARTRIDGE AND ANVIL ASSEMBLIES

• US 20110006102A1
• Filed: 05/20/2010
• Published: 01/13/2011
• Est. Priority Date: 07/11/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Kostrzewski, Stanislaw
• Granted Patent: US 8,276,802 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 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2912 transmission of forces to actuating rod or piston
• CPC Class Codes: A61B 2017/2926 Details of heads or jaws
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments

Abstract

An end effector for use with a surgical instrument having a first cartridge assembly configured to deploy a first set of fasteners and a second cartridge assembly disposed distally of the first cartridge assembly. The second cartridge assembly is configured to move between an open position and an approximated position relative to clamp tissue. A central rod extends between the first cartridge assembly and the second cartridge assembly.

Claims

1. An end effector for use with a surgical instrument, comprising:

a first cartridge assembly configured to deploy a first set of fasteners;

a second cartridge assembly disposed distally of the first cartridge assembly, wherein the second cartridge assembly is configured to move between an open position and an approximated position to clamp tissue; and

a central rod extending between the first cartridge assembly and the second cartridge assembly.

2. The end effector of claim 1, further comprising a first anvil assembly disposed distally of the first cartridge assembly.

3. The end effector of claim 2, further comprising a second anvil assembly disposed distally of the first anvil assembly.

4. The end effector of claim 3, wherein the second cartridge assembly is configured to deploy a second set of fasteners once the second cartridge assembly has moved to the approximated position.

5. The end effector of claim 3, wherein each of the first anvil assembly and the second anvil assembly is mounted on the central rod for movement in response to movement of the central rod.

6. The end effector of claim 3, wherein the second cartridge assembly includes a second set of fasteners and a fastener pusher adapted to move between a distal position and a proximal position to eject the second set of fasteners from the second cartridge assembly.

7. The end effector of claim 6, wherein the fastener pusher of the second cartridge assembly is operatively connected to the central rod.

8. The end effector of claim 7, wherein the second cartridge assembly further comprises a biasing member, wherein the biasing member biases a cartridge housing against the fastener pusher.

9. The end effector of claim 3, wherein the first cartridge assembly further comprises a knife movable between a proximal position and a distal position.

10. The end effector of claim 9, wherein the first anvil assembly includes a weakened portion that is configured to break when the knife moves therethrough.

11. The end effector of claim 1, wherein the end effector is removably mountable to a surgical instrument.

12. The end effector of claim 3, where the first anvil assembly comprises a plurality of anvil pockets arranged in a substantially annular array and configured to deform the first set of fasteners, the first set of fasteners arranged in a substantially annular array.

13. The end effector of claim 3, wherein the central rod is removably mounted to a rod of the surgical instrument, the central rod slidable to approximate the anvil assemblies and fastener cartridge assemblies.

14. A surgical instrument for joining tissue, comprising:

a handle assembly;

an elongated portion extending distally from the handle assembly, the elongated portion having a proximal portion and a distal portion;

an end effector disposed adjacent the distal portion of the elongated portion, the end effector including;

a first cartridge assembly configured to deploy a first set of fasteners;

a first anvil assembly disposed distally of the first cartridge assembly;

a second anvil assembly disposed distally of the first anvil assembly;

a second cartridge assembly disposed distally of the second anvil assembly, wherein the second cartridge assembly is configured to move between an open position and an approximated position relative to the second anvil assembly; and

a central rod extending between the first cartridge assembly and the second cartridge assembly.

15. The surgical instrument of claim 14, wherein the second cartridge assembly is configured to deploy a second set of fasteners once the second cartridge assembly has moved to the approximated position, the second cartridge assembly including a fastener pusher adapted to move between a distal position and a proximal position to eject the second set of fasteners.

16. The surgical instrument of claim 14, wherein each of the first anvil assembly and the second anvil assembly is mounted on the central rod for movement in response to movement of the central rod.

17. The surgical instrument of claim 14, wherein the first cartridge assembly further comprises a knife movable between a proximal position and a distal position, wherein the first anvil assembly includes a weakened portion that is configured to break when the knife moves therethrough.

18. The surgical instrument of claim 15, wherein the first and second sets of fasteners are arranged in a substantially annular array.

19. A method for performing surgery, comprising the steps of:

inserting an end effector inside a tubular organ, the end effector including a first cartridge assembly housing a first set of fasteners, a first anvil assembly disposed distally of the first cartridge assembly, a second anvil assembly disposed distally of the first anvil assembly, a second cartridge assembly disposed distally of the second anvil assembly, wherein the second cartridge assembly is configured to move between an open position and an approximated position relative to the second anvil assembly, and a central rod extending between the first cartridge assembly and the second cartridge assembly;

drawing a first tissue portion of the tubular organ toward the central rod and into a first area located between the second cartridge assembly and the second anvil assembly;

drawing a second tissue portion of the tubular organ toward the central rod and into a second area located between the first anvil assembly and the second anvil assembly;

drawing a third tissue portion of the tubular organ toward the central rod and into a third area located between the first anvil assembly and the first cartridge assembly; and

firing the end effector to fasten sections of the first tissue portion and to fasten sections of the third tissue portion.

20. The method of claim 19, wherein the end effector includes a knife operatively associated with the first cartridge assembly and further comprising the step of cutting the second tissue portion with the knife.