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Electrosurgical generator

  • US 4,559,943 A
  • Filed: 11/02/1983
  • Issued: 12/24/1985
  • Est. Priority Date: 09/03/1981
  • Status: Expired due to Term
First Claim
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1. In a electrosurgical generator for performing an electrosurgical operation which requires a periodically interrupted waveform, said generator having output circuitry for connection to a patient and means controllable by an operating surgeon for selecting said electrosurgical operation, the improvement comprising:

  • power amplifier means responsive to said selecting means for selectively generating a periodically interrupted rectangular waveform with a fundamental frequency, duty cycle, current and voltage suitable for performing said electrosurgical operation; and

    filter means responsive to said rectangular waveform for converting said rectangular waveform to an output waveform suitable for performing said electrosurgical operation and for providing said ouput waveform to said output circuitry, said filter acting as a voltage doubler and producing an output wave form having a peak voltage equal to twice the peak voltage of said rectangular waveform.

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