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Hot tip catheter assembly

  • US RE35,330 E
  • Filed: 10/13/1993
  • Issued: 09/17/1996
  • Est. Priority Date: 08/28/1989
  • Status: Expired due to Term
First Claim
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1. A method of applying heat to the interior of a vessel in vivo, said method comprising the steps of:

  • inserting an electrically heatable, voltage responsive, hot tip catheter assembly having a catheter tip into the vessel;

    positioning said catheter tip in the vicinity of the vessel interior to be heated;

    heating said catheter tip;

    monitoring the temperature of said catheter tip;

    comparing said temperature with a set point temperature representative of a predetermined temperature set point for said catheter tip;

    determining the deviation between tip temperature and set point temperature;

    determining the rate of change of said deviation; and

    applying a voltage to said catheter tip in accordancewith both said deviation and said rate of change of said deviation in order to control the temperature of said catheter tip at said set point temperature.

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