catheters, wire guides, guides, dilators, stents, trocars, forceps, leads, infusion pumps, and scissors used in medical procedures, and component parts thereof; guide wires, catheters, guides, and surgical instruments used in angioplasty; catheters, guides, and surgical instruments used in atherectomy; cardioverters, defibrillators, and cardioversion and defibrillation leads, monitors, and recorders; pacemakers and pacemaker leads; and trocars, cannulas, catheters, scopes, balloons, cameras, endoscopic instruments, scissors and scissor instruments, forceps and surgical instruments used in laparoscopy