Interlocking buttress material retention system

• US 8,308,046 B2
• Filed: 11/30/2011
• 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: Prommersberger, Megan L.
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US13/307,581
• Publication Number:
  US 20120067936A1
• Time in Patent Office: 349 Days
• Field of Search: 227/19, 227/176.1, 227/180.1, 227/175.1, 606/139, 606/219, 606/151, 361/773, 361/776, 349/150
• US Class Current: 227/180.1
• 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 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• 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 17/07207 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 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/00893 pharmaceutically effective
• 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 containing cartridge and an anvil. Buttress material is releasable affixed to the staple containing cartridge and the anvil. One of the jaws includes a pair of longitudinal projections at a first end of the jaw and configured to frictionally engage corresponding slots in a first end the buttress material. One of the jaws includes a post at a second end of the jaw. The buttress material includes a hole in a second end of the buttress material for receipt of the post.

Claims

1. A surgical stapler comprising:

a first jaw having a staple cartridge and a second jaw including an anvil, at least one of the first jaw and the second jaw defining a tissue facing surface defining a at least one projection extending above the tissue facing surface of at least one of the first jaw and the second jaw such that each projection defines a tissue contacting surface; and

a staple line buttress material releasably disposed against the tissue facing surface, the staple line buttress material defining a recess therein for receiving the at least one projection,

wherein the staple line buttress material is positioned between the tissue facing surface and a plane defined by the tissue contacting surface,

wherein the at least one of the first jaw and the second jaw includes a longitudinally extending knife slot, the at least one projection being separated by the knife slot.

2. The surgical stapler as recited in claim 1, wherein the at least one projection is disposed near the distal end of the at least one of the first jaw and the second jaw.

3. The surgical stapler as recited in claim 1, wherein the at least one projection includes two projections.

4. The surgical stapler as recited in claim 1, wherein the at least one projection includes a neck portion and a bulbous portion.

5. The surgical stapler as recited in claim 4, wherein the staple line buttress material defines a cut out for receiving the at least one projection, the cut out having a shape corresponding to the at least one projection.

6. The surgical stapler as recited in claim 1, wherein the at least one projection includes a post, and wherein the staple line buttress material includes a respective hole for receipt of the post.