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Method for detecting transverse mode vibrations in an ultrasonic hand piece/blade

  • US 6,588,277 B2
  • Filed: 05/21/2001
  • Issued: 07/08/2003
  • Est. Priority Date: 05/21/2001
  • Status: Expired due to Term
First Claim
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1. A method for detecting transverse vibrations in an ultrasonic hand piece/blade, comprising:

  • applying a drive signal to the hand piece/blade using an ultrasonic generator;

    monitoring a change over time of the drive signal;

    measuring a level of an output signal from a filter located in the ultrasonic generator;

    comparing the output signal to a predetermined level; and

    if the output signal exceeds the predetermined level, displaying a message on a liquid crystal display of the generator to indicate that the ultrasonic hand piece/blade contains transverse vibrations.

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