Jeffrey L. Aldridge;John E. Hein;James R. Giordano;Joseph A. Brotz;Eitan T. Wiener;Foster B. Stulen
发明人:
Eitan T. Wiener,Jeffrey L. Aldridge,James R. Giordano,Foster B. Stulen,Joseph A. Brotz,John E. Hein
申请号：
US12896360
公开号：
US09060775B2
申请日:
2010.10.01
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A method for determining motional branch current in an ultrasonic transducer of an ultrasonic surgical device over multiple frequencies of a transducer drive signal. The method may comprise, at each of a plurality of frequencies of the transducer drive signal, oversampling a current and voltage of the transducer drive signal, receiving, by a processor, the current and voltage samples, and determining, by the processor, the motional branch current based on the current and voltage samples, a static capacitance of the ultrasonic transducer and the frequency of the transducer drive signal.
