Releasable Buttress Retention on a Surgical Stapler

A surgical stapling apparatus including a releasable buttress material, the surgical stapling apparatus comprising:

• a cartridge assembly including a plurality of staples and a tissue contacting surface defining staple retaining slots;
• an anvil assembly including a tissue contacting surface defining staple pockets for forming staples expelled from the staple retaining slots of the cartridge assembly, the anvil assembly including a swaged outer edge;
• and
• a buttress material including an outer portion retained within the swaged outer edge of the anvil assembly.

A surgical stapling apparatus including a releasable buttress material, the surgical stapling apparatus comprising:

• a cartridge assembly including a plurality of staples and a tissue contacting surface defining staple retaining slots;
• an anvil assembly including a tissue contacting surface defining staple pockets for forming staples expelled from the staple retaining slots of the cartridge assembly;
• a knife disposed within a knife slot formed in the tissue contacting surface of the cartridge assembly;
• and
• a buttress material including an outer portion swaged to an outer edge of one of the cartridge assembly and the anvil assembly.