DOUBLE ACTING ENDOSCOPIC SCISSORS WITH BIPOLAR CAUTERY CAPABILITY

摘要

A double acting bipolar endoscopic scissors (10) includes a hollow tube (16) with an integral clevis (24) and a bipolar push rod extending therethrough. The tube (16) is rotatably mounted in a handle member which is provided with a manual actuation lever (14). The bipolar push rod includes a pair of spaced apart rods (32,34) which are insulated along substantially their entire lengths by polypropylene sheaths (35,35a) and which are insert molded in a distal insulating collar (46) near their distal ends, in a proximal insulating collar (36) near their proximal ends, and in plurality of nonconductive cylinders (35,35a) therebetween. The distal collar includes a flattened distal portion (50) and the distal ends of the rods are bent approximately 90° and exit the flattened portion. A pair of scissor blades (26,28) are mounted in the clevis (24) with an axle screw and a nut and are insulated from the clevis and the axle screw.