Electrosurgical generator

  • US 6,238,387 B1
  • Filed: 11/16/1998
  • Issued: 05/29/2001
  • Est. Priority Date: 08/23/1996
  • Status: Expired due to Term
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First Claim
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1. An electrosurgical generator for use in the performance of a surgical operation on a tissue mass, comprising:

  • a signal generating means adapted to apply electrosurgical output pulses across a tissue mass at a predetermined frequency;

    impedance measuring means which measures at least one of a complex impedance and a rate of change of the complex impedance across the tissue mass through the application of a predetermined measurement signal across the tissue mass only between said electrosurgical output pulses; and

    control means which regulates the signal generating means based at least in part on said at least one of the complex impedance and rate of change of the complex impedance.

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