N91E7V Ethicon Harmonic Scalpel Ultrasonic Cutting Coagulation Device Other Endoscopy Products The Harmonic Scalpel is an ultrasonic surgical instrument that simultaneously cuts and coagulates tissue. It converts electrical energy into ultrasonic mechanical vibration, so tissue is divided and vessels are sealed with limited thermal spread and reduced charring compared with conventional electrosurgery. Features Simultaneous cutting and coagulation in a single instrument.