Staple cartridge including a barbed staple

摘要

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.