Newly developed ultrasonic aspirator and its application for endoscopic surgery

The authors have developed an ultrasonic aspirator to assist in urologic endoscopic surgery. It appeared that ultrasonic aspiration of bladder tumors was clinically efficient in transurethral surgery. Tumors 1 to 2 cm in diameter could be aspirated completely with this instrument alone. The application of the ultrasonic aspirator, which has also been designed with a coagulating function, to laparoscopic lymphadenectomy was evaluated. A special probe sheath was used to insulate it when using coagulation current. During operation, perivascular fatty tissue was removed safely with the aspirator. In the near future, the ultrasonic aspirator will be one of the most effective tools in laparoscopic surgery.