Methods for ultrasonic tissue sensing and feedback
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United States of America Patent
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Sep 17, 2013
Grant Date -
Jan 12, 2012
app pub date -
Sep 21, 2011
filing date -
Oct 21, 2009
priority date (Note) -
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Abstract
An ultrasonic surgical instrument is presented including an ultrasonic transmission member having a proximal end and a distal end, and a handle member located at the proximal end of the transmission member. The ultrasonic surgical instrument also includes an end effector assembly located at the distal end of the transmission member. The end effector assembly includes a sensing mechanism for sensing load variations on tissue based on mechanical vibrations detected on one or more portions of the surgical instrument, the mechanical vibrations sensed by a laser interferometer.
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