An ultrasonic treatment apparatus comprises at least one hand piece, a plurality of probes, and an ultrasonic drive device. The hand piece has an ultrasonic oscillation device for generating ultrasonic vibration. Each probe is adapted to be attached to the hand piece and designed to transmit the ultrasonic...http://www.google.fr/patents/US5391144?utm_source=gb-gplus-shareBrevet US5391144 - Ultrasonic treatment apparatus
