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Ultrasonic interlock and method of using the same

  • US 5,968,060 A
  • Filed: 02/28/1997
  • Issued: 10/19/1999
  • Est. Priority Date: 02/28/1997
  • Status: Expired due to Term
First Claim
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1. A method of inserting a trocar cannula into tissue of a patient, comprising the steps of:

  • providing an ultrasonic trocar obturator having an ultrasonic waveguide including an end effector at a distal end thereof;

    positioning the trocar obturator within a trocar cannula;

    positioning the trocar obturator in contact with a wall of said body cavity;

    ultrasonicly vibrating the end effector to create a penetration opening;

    advancing the ultrasonic obturator into said penetration opening;

    applying a braking member to the obturator to dampen the ultrasonic vibration of the end effector; and

    advancing the trocar cannula into the penetration opening.

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