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Catheter for laser angiosurgery

  • US 5,290,275 A
  • Filed: 07/16/1991
  • Issued: 03/01/1994
  • Est. Priority Date: 03/22/1985
  • Status: Expired due to Term
First Claim
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1. A medical laser catheter for removing tissue from a site comprising;

  • a catheter having an optical waveguide extending from a proximal end of the catheter to a distal region at a distal end of the catheter;

    a lumen extending within the catheter and defining a central opening at the distal end of the catheter through such that the distal end of the catheter comprises a rigid output surface surrounding the central opening; and

    a laser coupled to the optical waveguide such that laser radiation can be transmitted from the proximal end of the catheter to the distal end of the catheter, the waveguide emitting a diverging output beam of radiation through the output surface of the catheter such that the diverging output beam substantially overlies the output surface surrounding the central opening at the distal end of the catheter.

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