ENDOSCOPIC BIPOLAR ELECTROCAUTERY INSTRUMENTS

摘要

An endoscopic bipolar electro-cautery instrument includes a proximal actuator with a distally extending lever (62) coupled by a tube (20) and push rod (38) to a pair of distal graspers. A stationary jaw (16) with an integral clevis is mounted inside the distal end of the tube and electrically contacts the inner surface thereof. A movable jaw (22) is electrically and mechanically coupled to the push rod (38) which is covered with an insulating shrink wrap (39) from a point just proximal of its connection with the movable jaw to a point near its proximal end. The uninsulated proximal end of the tube is mounted in a conductive bushing (46) which rotates within a nonconductive handle (40). The proximal end of the push rod (38) is fitted between the bushing and the push rod.