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Ultrasonic device having wire sheath

  • US 5,248,296 A
  • Filed: 12/24/1990
  • Issued: 09/28/1993
  • Est. Priority Date: 12/24/1990
  • Status: Expired due to Term
First Claim
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1. An ultrasonic device comprising:

  • a wire having a first end portion and having a second end portion for use in removing unwanted material in a normally inaccessible area by cavitation;

    a close fitting sheath surrounding the wire along the majority of the length of the wire for dampening transverse displacement of the wire in the proximity of the sheath;

    said sheath and wire forming a sheath passageway therebetween;

    support means having a handpiece having a horn end portion fixedly connected to the wire first end portion; and

    drive means having a transducer supported by the handpiece for providing ultrasonic vibration through the horn end portion to the wire first end portion;

    wherein the sheath has an inside diameter and the wire has an outside diameter and the difference between the sheath inside diameter and the wire outside diameter is in the range of about 0.006 inches to 0.012 inches.

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