Kevin W. Smith,Thomas O. Bales, Jr.,Matthew A. Palmer,Derek Dee Deville
申请号：
US13072247
公开号：
US08333778B2
申请日:
2011.03.25
申请国别(地区):
US
年份:
2012
代理人:
摘要：
An ultrasonic surgical assembly includes an ultrasonic transducer operable to convert a received motional voltage into a movement of a cutting blade of an ultrasonic waveguide, a motional feedback circuit connected in a parallel configuration with the transducer, a variable power source operable to apply a first voltage between a set of connection points to the parallel configuration, a voltage meter operable to determine a feedback voltage measured from the motional feedback circuit, and a voltage controller operable to vary an output of the power source based upon the measured feedback voltage, resulting in a substantially constant feedback voltage and maintaining a substantially constant rate of movement of the cutting blade across a variety of cutting loads.
