... tissue via vibration of the hollow titanium tip of the hand piece,which creats cavitation,micro-jet and mechanical vibration in water ... puffed from the hollow tip of the titanium staff of hand piece.The necrotic matter,infected cells,fibrin slough,and biofilms ... and steady ultrasonic frequency,the device can match any ultrasonic hand pieces of the ultrasonic debrider. Ultrasonic wound therapy system( ...