US Patent 8636189 Active wedge for surgical stapler

An exemplary active wedge for use with surgical staples, comprising a wedge base having an upper surface; and at least one wedge grate movable relative to the wedge base between a first position and a second position, where in the first position of the wedge base substantially all of the wedge grate is located below the upper surface of the wedge base, and where in the second position at least part of the wedge grate is positioned above the upper surface of the wedge base.