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Ultrasonic surgical apparatus and methods for use thereof

  • US 9,114,245 B2
  • Filed: 08/16/2010
  • Issued: 08/25/2015
  • Est. Priority Date: 08/14/2009
  • Status: Active Grant
First Claim
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1. An ultrasonic surgical apparatus comprising:

  • a medical ultrasound handpiece assembly having an ultrasound transducer; and

    an end effector coupled to the ultrasound transducer, the end effector having, in order, a distal probe tip, a probe neck, a probe dilation region, and an ultrasonically active shaft, with the shaft being coaxially held within an ultrasonically inactive probe sheath and conducting a standing ultrasonic wave between the ultrasound transducer and the distal probe tip;

    wherein the probe dilation region is configured to have an average outside diameter that is equal to or greater than the average outside diameter of the probe tip and the average outside diameter of the probe neck;

    wherein the probe sheath is configured to have an outside diameter that is approximately equal to the outside diameter of the probe dilation region, with the probe sheath and the probe dilation region forming an annular junction about the distal end of the ultrasonically active shaft; and

    wherein the probe dilation region is located proximate the first anti-node of the standing ultrasonic wave proximal from the distal probe tip.

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