Ultrasound operation apparatus, ultrasound operation system, and cavitation utilization method

摘要

An ultrasound operation apparatus includes an ultrasound transducer; a drive section that drives the ultrasound transducer by means of a drive signal; a probe that has a proximal end section in which the ultrasound transducer is provided and a distal end section to which ultrasound vibrations are transmitted, and that performs treatment for living tissue by using ultrasound vibrations at the distal end section; a detection section that detects from the drive signal a physical quantity that changes due to cavitations generated by ultrasound vibrations of the distal end section and an output control section that controls the output of the drive section so as to generate cavitations or to increase or maintain a generation amount in accordance with the detected physical quantity.

主权项

1. An ultrasound operation apparatus for treating a living tissue, comprising:
an ultrasound transducer configured to generate ultrasound vibrations; a probe that has a proximal end section that is operationally coupled with the ultrasound transducer, and a distal end section that makes ultrasound vibrations, the probe being configured to transmit the ultrasound vibrations generated by the ultrasound transducer from the proximal end section to the distal end section; a resonance frequency tracking section configured to automatically adjust a frequency of a drive signal so as to track a resonance frequency of the ultrasound transducer to cause the distal end section to make ultrasound vibrations at the resonance frequency; a setting section configured to set a setting value at a cavitation level; a detection section configured to detect a signal level of a frequency component signal obtained by integration of the drive signal in a predetermined frequency band excluding the resonance frequency based on a drive signal adjusted by the resonance frequency tracking section; and a control section configured to control an output of the drive signal so as to generate a cavitation or to increase or maintain the cavitation with respect to the setting value set by the setting section in accordance with a detection result of the detection section.