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Electrosurgical system and method having enhanced temperature measurement

  • US 8,696,659 B2
  • Filed: 04/30/2010
  • Issued: 04/15/2014
  • Est. Priority Date: 04/30/2010
  • Status: Active Grant
First Claim
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1. An electrosurgical method for monitoring temperature during an electrosurgical procedure to ablate soft tissue comprising:

  • delivering high frequency energy to an active electrode terminal located at a distal end of an electrosurgical probe, said active electrode terminal being positioned in electrically conductive fluid during the electrosurgical procedure and wherein a current flow path from the active electrode terminal, through the electrically conductive fluid, to a return electrode is created when the high frequency energy is delivered;

    monitoring a temperature signal indicative of a temperature of the electrically conductive fluid;

    automatically suspending the delivering step for at least one suspension period;

    during the at least one suspension period, measuring or calculating the temperature of the electrically conductive fluid from the temperature signal; and

    repeating the step of delivering upon completion of the at least one suspension period, wherein the at least one suspension period has a duration sufficient for an electrical noise associated with the step of delivering the high frequency energy to diminish and to allow the temperature signal to stabilize.

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