US Patent 7850707 Ultrasonic surgery apparatus

An ultrasonic surgery apparatus enabling smooth surgery. The ultrasonic apparatus is provided with an ultrasonic chip, a vibration inducing unit which induces ultrasonic vibration to the ultrasonic chip, an aspiration unit which aspirates tissue emulsified by vibration of the ultrasonic chip, a detection unit which detects a clogging condition of the ultrasonic chip, a footswitch, having a pedal, for emitting an output signal which is based on a depression amount or a depression position of the pedal, and a control unit which controls at least one of ultrasonic power and a pulse-duty ratio of the ultrasonic vibration based on the output signal from the footswitch and a detection result obtained by the detection unit.