Structure for attachment of buttress material to anvils and cartridges of surgical stapler

• US 8,308,042 B2
• Filed: 05/16/2011
• Issued: 11/13/2012
• Est. Priority Date: 06/18/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Aranyi, Ernie
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US13/108,347
• Publication Number:
  US 20110215133A1
• Time in Patent Office: 547 Days
• Field of Search: 227/19, 227/176.1, 227/175.1, 227/180.1, 227/178.1, 606/151, 606/219, 606/139, 606/148
• US Class Current: 227/175.1
• 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 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments

Abstract

A surgical stapler is provided having a pair of jaws including a staple cartridge and an anvil. Buttress material is releasably secured to at least one of the staple cartridge and the anvil. The buttress material includes a tab to releasably and frictionally engage the at least one of the staple cartridge and the anvil.

Claims

1. A staple cartridge, comprising:

a housing including a proximal portion and a distal portion, the housing defining a surface including a plurality of staple pockets formed in a tissue contacting surface thereof for the reception of staples therein; and

a buttress material including a proximal and a distal portion, the buttress material releasably securable to the surface of the housing atop of the staple pockets, the distal portion of the buttress material defining a distal end having a tab extending distally therefrom, the tab having a narrower width relative to the buttress material and the distal portion of the housing defining a groove, the tab configured to be releasably secured to the groove.

2. The staple cartridge of claim 1, wherein the tab is friction fit into the groove.

3. The staple cartridge of claim 1, further comprising a knife blade and a knife channel, the knife blade receivable through the knife channel.

4. The staple cartridge of claim 3, wherein the buttress material overlies the knife channel.

5. The staple cartridge of claim 4, wherein the knife blade severs the buttress material as the knife blade travels through the knife channel.

6. The staple cartridge of claim 3, wherein the groove is disposed distal of the knife channel and wherein the tab is friction fit within the groove.

7. The staple cartridge of claim 1, wherein the staple cartridge includes at least one projection extending from the tissue contacting surface, and wherein the buttress material includes at least one aperture for receiving a respective one of the at least one projection.

8. A staple cartridge, comprising:

a housing including a proximal portion and a distal portion, the housing defining a surface including a plurality of staple pockets formed in a tissue contacting surface thereof for the reception of staples therein, wherein the distal portion of the housing defines a groove and wherein the housing includes at least one projection extending from the tissue contacting surface; and

a buttress material including a proximal and a distal portion, the buttress material releasably securable to the surface of the housing atop of the staple pockets, the distal portion of the buttress material defining a distal end having a tab extending distally therefrom, the tab having a narrower width relative to the buttress material, the tab configured to be releasably secured in the groove, and wherein the buttress material includes at least one aperture for receiving a respective one of the at least one projection.

9. The staple cartridge of claim 8, wherein the tab is friction fit into the groove formed in the housing of the staple cartridge.

10. The staple cartridge of claim 9, wherein the groove is disposed distal of the knife channel and wherein the tab is friction fit within the groove.

11. The staple cartridge of claim 8, further comprising a knife blade and a knife channel, the knife blade receivable through the knife channel.

12. The staple cartridge of claim 11, wherein the buttress material overlies the knife channel.

13. The staple cartridge of claim 12, wherein the knife blade severs the buttress material as the knife blade travels through the knife channel.

14. A surgical stapler, comprising:

a handle; and

an end effector connected to the handle assembly and operable by the handle, the end effector supporting a replaceable staple cartridge, the staple cartridge including;

a housing including a proximal portion and a distal portion, the housing defining a surface including a plurality of staple pockets formed in a tissue contacting surface thereof for the reception of staples therein; and

a buttress material including a proximal and a distal portion, the buttress material releasably securable to the surface of the housing atop of the staple pockets, the distal portion of the buttress material defining a distal end having a tab extending distally therefrom, the tab having a narrower width relative to the buttress material and the distal portion of the housing defining a groove, the tab configured to be releasably secured to the groove.

15. The surgical stapler of claim 14, wherein the staple cartridge includes a first end and a second end, at least one projection extends from the first end of the staple cartridge, the groove is positioned at the second end of the staple cartridge, the buttress material includes at least one aperture at a proximal end for the reception of the at least one projection therein, the buttress material includes at least one tab at a distal end of the buttress material, the at least one tab is friction fit into the groove of the staple cartridge.

16. The surgical stapler of claim 14, wherein the buttress material defines a tab that is friction fit into the groove formed in the housing of the staple cartridge.

17. The surgical stapler of claim 14, wherein the surgical stapler includes a knife blade and the stapler cartridge defines a knife channel, the knife blade receivable through the knife channel.

18. The surgical stapler of claim 17, wherein the buttress material overlies the knife channel.

19. The surgical stapler of claim 17, wherein the knife blade is actuatable by the handle and severs the buttress material as the knife blade travels through the knife channel.