Abstract: A surgical instrument is provided for cutting tissue. The surgical instrument includes a shaft having proximal and distal ends, a cutter coupled to the distal end, and a handle coupled to the proximal end. The cutter is formed to include a base having two cutting edges providing an opening, a slider, and a tip coupled to both the base and the slider. The cutter is formed to move between a fully open position in which the cutting edges of the tip form an obtuse angle relative to the shaft and a fully closed position in which the tip is received within the opening of the base. The handle is arranged to move the cutter between the open and closed positions.

Abstract: A surgical instrument (10) is provided for cutting tissue. The surgical instrument (10) includes a shaft (20) having proximal (84) and distal (40) ends, a cutter (12) coupled to the distal end (40), and a handle (16) coupled to the proximal end (84). The cutter (12) is formed to include a base (30) having two cutting edges (50) providing an opening (51), a slider (32), and a tip (34) coupled to both the base (30) and the slider (32). The cutter (12) is formed to move between a fully open position in which the cutting edges (50) of the tip (34) form an obtuse angle (124) relative to the shaft (20) and a fully closed position in which the tip (34) is received within the opening (51) of the base (30). The handle (16) is arranged to move the cutter (12) between the open and closed positions.