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Intravascular ultrasonic angioplasty probe

  • US 5,069,664 A
  • Filed: 01/25/1990
  • Issued: 12/03/1991
  • Est. Priority Date: 01/25/1990
  • Status: Expired due to Term
First Claim
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1. An probe for ultrasonically removing unwanted biological tissue comprising an elongate probe assembly having proximal and distal end portions, and a transducer subassembly located near said distal end portion of said probe assembly, wherein said transducer subassembly includes:

  • transducer means having a predetermined length dimension and adapted to vibrate at ultrasonic frequencies in response to electrical driving signals;

    elongate ultrasonic horn means positioned laterally adjacent to said transducer means and aligned substantially parallel to said length dimension thereof;

    coupling means rigidly coupling the proximal ends of said transducer means and said ultrasonic horn means one to another so as to allow said vibratory displacements of said transducer means to be transferred to said horn means; and

    flexible wire means operatively connected to and distally extending from said horn means so that said vibratory displacements of said horn means are responsively transferred to said wire means, wherein said wire means includes a terminal end portion adapted to contact said unwanted biological tissue and to remove the same by means of said responsive vibratory displacements thereof.

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