Method and apparatus for ultrasonic surgical fragmentation and removal of tissue
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United States of America Patent
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May 9, 1989
Grant Date -
N/A
app pub date -
Apr 2, 1986
filing date -
Apr 2, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for periodically interrupting ultrasonic power applied to a ultrasonically vibrating tip to control its amplitude between high and low or zero amplitudes with a selectible duty cycle and repetition rate provides enhanced fragmentation and improves surgical control. The duty cycle may also vary as a function of a remotely sensed parameter such as tissue temperature.
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