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Ultrasonic surgical instrument with features for forming bubbles to enhance cavitation

  • US 10,639,058 B2
  • Filed: 09/01/2017
  • Issued: 05/05/2020
  • Est. Priority Date: 11/20/2013
  • Status: Active Grant
First Claim
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1. A method of providing cavitation in a tissue or other anatomical structure at a surgical site in a patient, the method comprising:

  • (a) activating an ultrasonic element at a first vibrational profile to generate microbubbles in a fluid at a surgical site in a patient; and

    (b) activating the ultrasonic element at a second vibrational profile to grow the microbubbles and burst the microbubbles, to thereby induce erosion by cavitation in the tissue or other anatomical structure at the surgical site;

    wherein the first vibrational profile includes ultrasonic vibrations at a first amplitude;

    wherein the second vibrational profile includes ultrasonic vibrations at a second amplitude;

    wherein the first amplitude is greater than the second amplitude.

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