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Ultra-sound catheter for removing obstructions from tubular anatomical structures such as blood vessels

  • US 5,405,318 A
  • Filed: 09/28/1993
  • Issued: 04/11/1995
  • Est. Priority Date: 05/05/1992
  • Status: Expired due to Term
First Claim
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1. An ultrasonic catheter for removing obstructions from tubular anatomical structures such as blood vessels, said ultrasonic catheter comprising:

  • an elongate flexible catheter body having a proximal end, a distal end and at least one lumen extending longitudinally therethrough;

    an ultrasound transmission member extending longitudinally through said lumen of said catheter body, said ultrasound transmission member having a proximal end connectable to a separate ultrasound generating device and a distal end terminating adjacent the distal end of said catheter body;

    said ultrasound transmission member comprising a metal wire having an outer surface, and further comprising a friction-reducing coating applied on the outer surface of the metal wire.

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