Surgical fastener applying apparatus

Patent metadata

Field	Value
Publication number	US-10639040-B2
Application number	US-201815995979-A
Country	US
Kind code	B2
Filing date	Jun 1, 2018
Priority date	Oct 1, 2010
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

A surgical stapler includes a tubular body portion and a cartridge assembly disposed at a distal end of the body portion for expelling an annular array of staples. Each of the staples of the annular array of staples has a generally bent backspan. An anvil member disposed at the distal end of the tubular body portion is positioned opposite the cartridge assembly to clinch the staples in tissue upon expulsion of the staples from the cartridge assembly. The anvil member has a corresponding annular array of staple forming buckets. Each of the buckets is configured to accommodate the generally bent configuration of the staples to facilitate formation thereof.

First claim

What is claimed is:

1. A staple cartridge assembly comprising a tissue contacting surface defining first and second annular rows of staple retaining slots configured for expelling surgical staples, wherein a first staple retaining slot in the first annular row of staple retaining slots has a middle portion disposed between adjacent end portions of adjacent second and third staple retaining slots in the second annular row of staple retaining slots; wherein the middle portion of the first staple retaining slot is bent or curved.

2. The staple cartridge assembly according to claim 1 , wherein the first and second annular rows of staple retaining slots are concentric.

3. The staple cartridge assembly according to claim 1 , wherein the adjacent end portions of the adjacent second and third staple retaining slots define a gap therebetween, the middle portion of the first staple retaining slot being radially aligned with the gap.

4. The staple cartridge assembly according to claim 1 , wherein adjacent end portions of adjacent staple retaining slots in the first annular row of staple retaining slots are disposed between opposing first and second end portions of a fourth staple retaining slot in the second annular row of staple retaining slots.

5. The staple cartridge assembly according to claim 4 , further comprising a third annular row of staple retaining slots, wherein the first annular row of staple retaining slots is disposed between the second and third annular rows of staple retaining slots, the adjacent end portions of the adjacent staple retaining slots in the first annular row of staple retaining slots are disposed between opposing first and second end portions of a fifth staple retaining slot in the third annular row of staple retaining slots.

6. The staple cartridge assembly according to claim 5 , wherein the fourth staple retaining slot has a middle portion disposed between the first and second end portions thereof, and the fifth staple retaining slot has a middle portion disposed between the first and second end portions thereof, the middle portions of the fourth and fifth staple retaining slots being radially aligned.

7. The staple cartridge assembly according to claim 6 , wherein the middle portions of the fourth and fifth staple retaining slots are bent or curved.

8. An anvil assembly comprising a tissue contacting surface defining first and second annular rows of staple forming buckets, wherein a first staple forming bucket in the first annular row of staple forming buckets has a middle portion disposed between adjacent end portions of adjacent second and third staple forming buckets in the second annular row of staple forming buckets; wherein the middle portion of the first staple forming bucket is bent or curved.

9. The anvil assembly according to claim 8 , wherein the first and second annular rows of staple forming buckets are concentric.

10. The anvil assembly according to claim 8 , wherein the adjacent end portions of the adjacent second and third staple forming buckets define a gap therebetween, the middle portion of the first staple forming bucket being radially aligned with the gap.

11. The anvil assembly according to claim 8 , wherein adjacent end portions of adjacent staple forming buckets in the first annular row of staple forming buckets are disposed between opposing first and second end portions of a fourth staple forming bucket in the second annular row of staple forming buckets.

12. The anvil assembly according to claim 11 , further comprising a third annular row of staple forming buckets, wherein the first annular row of staple forming buckets is disposed between the second and third annular rows of staple forming buckets, the adjacent end portions of the adjacent staple forming buckets in the first annular row of staple forming buckets are disposed between opposing first and second end portions of a fifth staple forming bucket in the third annular row of staple forming buckets.

13. The anvil assembly according to claim 12 , wherein the fourth staple forming bucket has a middle portion disposed between the first and second end portions thereof, and the fifth staple forming bucket has a middle portion disposed between the first and second end portions thereof, the middle portions of the fourth and fifth staple forming buckets being radially aligned.

14. The anvil assembly according to claim 13 , wherein the middle portions of the fourth and fifth staple forming buckets are bent or curved.

Assignees

• Covidien Lp

Inventors

• Penna Christopher
• Williams Justin
• Scirica Paul
• Racenet David

Classifications

• A61B17/0644

  penetrating the tissue, deformable to closed position · CPC title

• A61B17/1155 Primary

  Circular staplers comprising a plurality of staples · CPC title

• A61B2017/07235

  containing different staples, e.g. staples of different shapes, sizes or materials · CPC title

• A61B2017/07264

  characterised by its staple forming cavities, e.g. geometry or material · CPC title

• A61B17/068

  Surgical staplers {, e.g. containing multiple staples or clamps}({staplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105;} for performing anastomosis A61B17/115; {staplers in general B25C5/00}) · CPC title