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Method of using a doppler catheter

  • US 4,957,111 A
  • Filed: 09/23/1988
  • Issued: 09/18/1990
  • Est. Priority Date: 09/13/1985
  • Status: Expired due to Term
First Claim
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1. A method of treating stenosis in the arterial tree comprising the steps of:

  • providing a catheter having a Doppler crystal attached at the distal tip thereof and axially oriented therewith, an angio-balloon proximate to the distal end, and a passageway disposed for operable contact with the blood stream;

    placing a wire guide in the passageway;

    inserting the catheter into the arterial tree;

    manipulating the wire guide to position the catheter in the region of the stenosis;

    expanding the angio-balloon in the region of the stenosis; and

    operating the Doppler crystal to measure the velocity of the blood in the region of the stenosis.

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