Surgical stapling apparatus

• US 10,111,659 B2
• Filed: 11/06/2015
• Issued: 10/30/2018
• Est. Priority Date: 03/06/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Racenet, Danyel, Aranyi, Ernie, Simpson, Richard
• Primary Examiner(s): CHUKWURAH, NATHANIEL C
• Application Number:
  US14/934,192
• Publication Number:
  US 20160058451A1
• Time in Patent Office: 1,089 Days
• Field of Search: 2271761, 2271751, 227 19, 2271801, 2271791, 2271781, 606142, 606219
• 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 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/0023 disposable
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07285 characterised by its cutter

Abstract

A surgical stapling apparatus is provided including a cartridge assembly defining a tissue contacting surface; an anvil assembly defining a tissue contacting surface; and a surgical buttress releasably secured to at least one of the tissue contacting surface of the cartridge assembly and the tissue contacting surface of the anvil assembly by at least one anchor. A loading unit is provided including a surgical buttress releasably secured to an anvil assembly and/or a staple cartridge secured thereto by at least one anchor, and a drive assembly including a knife blade, wherein movement of the drive assembly from a proximal position to a distal position results in the knife blade cutting the at least one anchor and freeing each surgical buttress from the anvil assembly and/or cartridge assembly.

Claims

1. A staple cartridge assembly comprising:

a staple cartridge defining staple retaining pockets;

a surgical buttress releasably secured to an upper surface of the staple cartridge, the surgical buttress being preloaded onto the staple cartridge; and

a distal anchor and a proximal anchor each securing the surgical buttress to the upper surface of the staple cartridge, the upper surface of the staple cartridge having a proximal pair of recesses formed therein for engaging the proximal anchor and a distal pair of recesses formed therein for engaging the distal anchor, wherein at least one recess of the distal pair of recesses is formed in a longitudinally-extending lateral side surface of the staple cartridge and constricting so as to frictionally engage an end portion of the distal anchor.

2. The staple cartridge assembly according to claim 1, further comprising a knife blade defining a distally oriented knife edge.

3. The staple cartridge assembly according to claim 2, wherein the knife blade is configured to cut the distal anchor.

4. The staple cartridge assembly according to claim 3, wherein the knife blade is configured to move distally to cut the distal anchor.

5. The staple cartridge assembly according to claim 1, wherein the distal anchor and the proximal anchor overly at least one of the staple retaining pockets.

6. The staple cartridge assembly according to claim 1, wherein the upper surface includes a longitudinal slot for a knife blade that travels from a proximal end to a distal end of the staple cartridge.

7. The staple cartridge assembly according to claim 6, wherein at least one of the proximal anchor or the distal anchor overlies the longitudinal slot.

8. A surgical instrument having the staple cartridge assembly according to claim 1.

9. The surgical instrument according to claim 8, further comprising a handle assembly.

10. The surgical instrument according to claim 8, further comprising an anvil.

11. The surgical instrument of claim 8, further comprising:

an elongate portion;

a stapler anvil; and

a proximal housing portion, the proximal housing portion being adapted to releasably engage the elongate portion of the surgical stapling instrument.

12. A cartridge assembly comprising:

a staple cartridge defining staple retaining pockets;

a surgical buttress releasably secured to an upper surface of the staple cartridge and being preloaded onto the staple cartridge; and

a distal anchor and a proximal anchor each securing the surgical buttress to the upper surface of the staple cartridge, wherein at least one of the proximal anchor or the distal anchor extends from a first longitudinally-extending side of the staple cartridge, transversely across the staple cartridge, to a second longitudinally-extending side of the staple cartridge.

13. The cartridge assembly according to claim 12, wherein the upper surface of the staple cartridge has:

a proximal pair of recesses formed therein for engaging the proximal anchors; and

a distal pair of recesses formed therein for engaging the distal anchor, at least one of the proximal pair of recesses or the distal pair of recesses are constricting so as to frictionally engage at least one of the proximal anchor or the distal anchor.

14. The cartridge assembly according to claim 13, further comprising a knife blade movably disposed in the staple cartridge and defining a distally oriented knife edge.

15. The cartridge assembly according to claim 14, wherein the knife blade is configured to cut the distal anchor.

16. The cartridge assembly according to claim 14, wherein the knife blade is configured to move distally to cut the distal anchor.

17. The cartridge assembly according to claim 13, wherein the distal anchor and the proximal anchor overlie at least one of the staple retaining pockets.

18. The cartridge assembly according to claim 12, wherein the upper surface includes a longitudinal slot for a knife blade that travels from a proximal end to a distal end of the staple cartridge.

19. The cartridge assembly according to claim 18, wherein at least one of the proximal anchor or the distal anchor overlies the longitudinal slot.