Liu, Xiaosen,Colli-Menchi, Adrian I.,Gilbert, James A.,Friedrichs, Daniel A.,Malang, Keith W.,Sanchez-Sinencio, Edgar
申请号：
AU2015204334
公开号：
AU2015204334A1
申请日:
2015.07.16
申请国别(地区):
AU
年份:
2016
代理人:
摘要：
#$%^&*AU2015204334A120160211.pdf#####ELECTROSURGICAL ULTRASONIC VESSEL SEALING AND DISSECTING SYSTEM ABSTRACT An ultrasonic motion generator includes a non-resonant inverter (370), an ultrasonic transducer (380), and a comparator (390). The non-resonant inverter (370) inverts direct current (DC) to alternating current (AC) having a first frequency. The ultrasonic transducer (380) is electrically coupled with the non-resonant inverter (370) and generates an ultrasonic motion based on the inverted AC. The comparator (390) automatically detects a deviation of the first frequency from a resonant frequency of the ultrasonic transducer based on motion current passing through the ultrasonic transducer (380) and generates an output signal based on the deviation to drive the non-resonant inverter. 10255092 2r - -- -- - -- -- - -- -- --II II II o oI oI 0 e I " II II II II FIG.I I I1 N -I FIG. 3
