STAPLE CARTRIDGE INCLUDING A BARBED STAPLE
An end effector for fastening tissue including a cartridge having a longitudinal row of staple cavities and a plurality of staples removably stored in the staple cavities. The staple includes a base, a pair of legs extending from the base, and a plane formed by the pair of legs, wherein at least one of the legs has a barb extending therefrom. The barb extends from the leg less than 360 degrees around the leg, wherein the barb extends beyond the plane formed by the legs. The end effector also includes an anvil configured to deform the staples, and a plurality of staple drivers movable within the cavities configured to lift the staples toward the anvil. The end effector further includes a firing member, configured to lift the staple driver system toward the anvil, including a first portion configured to engage the anvil and a second portion configured to engage the cartridge. The firing member is configured to relatively position the anvil and the cartridge.
1 . An end effector for fastening tissue, comprising:
a cartridge comprising a longitudinal row of staple cavities;
a plurality of staples removably stored in said staple cavities, wherein each said staple comprises:
a base;
a pair of legs extending from said base; and
a plane formed by said pair of legs, wherein at least one of said legs comprises at least one barb extending therefrom extending less than 360 degrees around said leg, wherein said barb extends beyond the plane formed by said legs, and wherein each said leg comprises a tip configured to pierce tissue;
an anvil configured to deform said staples;
a plurality of staple drivers movable within said cavities configured to lift said staples toward said anvil; and
a firing member configured to lift said staple driver system toward said anvil, wherein said firing member comprises a first portion configured to engage said anvil and a second portion configured to engage said cartridge, and wherein said firing member is configured to relatively position said anvil and said cartridge.
2 . The end effector of claim 1 , wherein said firing member comprises a knife edge.
3 . The end effector of claim 1 , wherein said firing member comprises at least one inclined surface configured to lift said drivers toward said anvil.
4 . An end effector for fastening tissue, comprising:
a cartridge comprising a plurality of staple cavities;
a plurality of staples removably stored in said staple cavities, wherein each said staple comprises:
a base;
a pair of legs extending from said base; and
a plane formed by said pair of legs, wherein at least one of said legs comprises at least one barb extending therefrom which extends transversely to the plane formed by said legs, and wherein each said leg comprises a tip configured to pierce tissue;
an anvil configured to deform said staples;
a staple driver system configured to lift said staples toward said anvil; and
a firing member configured to lift said staple driver system toward said anvil, wherein said firing member comprises a first portion configured to engage said anvil and a second portion configured to engage said cartridge, and wherein said firing member is configured to relatively position said anvil and said cartridge.
5 . The end effector of claim 4 , wherein said firing member comprises a knife edge.
6 . The end effector of claim 4 , wherein said firing member comprises at least one inclined surface configured to lift said drivers toward said anvil.