SURGICAL STAPLING DEVICE FOR PERFORMING CIRCULAR ANASTOMOSIS AND SURGICAL STAPLES FOR USE THEREWITH

• US 20170360444A1
• Filed: 08/29/2017
• Published: 12/21/2017
• Est. Priority Date: 10/01/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Scirica, Paul, Racenet, David
• Granted Patent: US 10,537,331 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/07235 containing different staples, e.g. staples of different shapes, sizes or materials
• CPC Class Codes: A61B 2017/07264 characterised by its staple forming cavities, e.g. geometry or material

Abstract

The present disclosure relates to an anvil assembly, an end effector and/or a surgical stapler suitable for performing curved or circular anastomosis and/or treatment to internal walls of hollow tissue organs wherein the anvil assembly includes an anvil center rod having a proximal end and a distal end, the center rod defining a central longitudinal axis; and an anvil head secured to the distal end of the anvil center rod. The anvil head includes an anvil plate defining a tissue contact surface; and a plurality of staple forming pockets formed in the tissue contact surface of the anvil plate, wherein each of the plurality of staple pockets defines an arcuate longitudinal axis.

Claims

1. (canceled)

2. A surgical stapler end effector, comprising:

a circular anvil assembly having a center rod with a proximal end for connection to an approximation mechanism and a distal end attached to an anvil head, the anvil head having an anvil plate with a tissue contact surface, and at least two circular rows of staple forming pockets, the staple forming pockets having a curved length; and

a staple cartridge assembly having at least two circular rows of staple retaining slots corresponding to the rows of staple forming pockets.

3. The surgical stapler end effector according to claim 2, wherein a length of each staple retaining slot in an inner row of staple retaining slots is shorter than a length of each staple retaining slot in an outer row of staple retaining slots.

4. The surgical stapler end effector according to claim 3, wherein a length of each staple forming pocket in an inner row of staple forming pockets is shorter than a length of each staple forming pocket in an outer row of staple forming pockets.

5. The surgical stapler end effector according to claim 4, wherein the staple cartridge assembly has a middle row of staple retaining slots in-between the inner row of staple retaining slots and the outer row of staple retaining slots.

6. The surgical stapler end effector according to claim 5, wherein the staple cartridge assembly has a middle row of staple forming pockets in-between the inner row of staple forming pockets and the outer row of staple forming pockets, and wherein the staple cartridge assembly has a middle row of staple retaining slots in-between the inner row of staple retaining slots and the outer row of staple retaining slots.

7. The surgical stapler end effector according to claim 6, wherein the middle row of staple forming pockets is nested with the inner row of staple forming pockets.

8. The surgical stapler end effector according to claim 6, wherein the outer row of staple forming pockets is nested with the middle row of staple forming pockets.

9. The surgical stapler end effector according to claim 6, wherein the middle row of staple forming pockets has staple forming pockets each having a length that is longer than a length of each of the staple forming pockets of the inner row of staple forming pockets.

10. The surgical stapler end effector according to claim 6, wherein the outer row of staple retaining slots has staple retaining slots each having a length that is longer than a length of each of the staple retaining slots of the middle row of staple retaining slots.

11. The surgical stapler end effector according to claim 6, wherein the middle row of staple retaining slots is nested with the inner row of staple retaining slots.

12. The surgical stapler end effector according to claim 6, wherein the outer row of staple retaining slots is nested with the middle row of staple retaining slots.

13. The surgical stapler end effector according to claim 6, wherein the middle row of staple retaining slots has staple retaining slots each having a length that is longer than a length of each of the staple retaining slots of the inner row of staple retaining slots.

14. The surgical stapler end effector according to claim 6, wherein the outer row of staple retaining slots has staple retaining slots each having a length that is longer than a length of each of the staple retaining slots of the middle row of staple retaining slots.