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Asymmetric water jet atherectomy

  • US 5,496,267 A
  • Filed: 11/08/1990
  • Issued: 03/05/1996
  • Est. Priority Date: 11/08/1990
  • Status: Expired due to Term
First Claim
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1. An apparatus for ablating at least a portion of a deposit within a vessel of a patient comprising:

  • a. catheter having a proximal end and a distal end;

    b. a working fluid;

    c. means coupled to said proximal end of said catheter for supplying said working fluid under high pressure;

    d. means coupled to said distal end of said catheter for directing said working fluid in the form of a stream at a deposit within a vessel of a patient, said means for supplying said working fluid under high pressure and said means for directing said working fluid in the form of a stream being capable of supplying and directing said working fluid at a velocity high enough to generate a stagnation pressure sufficient to remove ablated deposit debris without the use of a vacuum; and

    ,e. target means coupled to said distal end of said catheter at a location longitudinally spaced from said directing means for preventing said working fluid from directly impinging upon a vessel of a patient;

    said longitudinal spacing being sufficient to accommodate at least a portion of deposit being ablated.

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