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Electrosurgical generator and system

  • US 6,364,877 B1
  • Filed: 10/16/1998
  • Issued: 04/02/2002
  • Est. Priority Date: 06/23/1995
  • Status: Expired due to Term
First Claim
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1. An electrosurgical system operable in at least a tissue desiccation mode and a tissue cutting or vaporisation mode, comprising a generator for generating radio frequency power and an electrosurgical instrument coupled to the generator, the instrument having an electrode structure for operation immersed in a conductive liquid, wherein the generator includes a mode selection control and has power control circuitry for automatically adjusting the radio frequency power supplied to the electrode structure to limit the peak generator output voltage to a first value when the desiccation mode is selected and to at least one second value when the cutting or vaporisation mode is selected, the second value or values being higher than the first value.

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