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ELECTROSURGICAL APPARATUS FOR DENTAL USE

  • US 3,730,188 A
  • Filed: 03/24/1971
  • Issued: 05/01/1973
  • Est. Priority Date: 03/24/1971
  • Status: Expired due to Term
First Claim
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1. Electrosurgical apparatus for dental use providing controlled cutting and coagulation comprising a radio-frequency oscillator circuit for generating at its output radio-frequency oscillating currents when activated by voltage at its input, means coupled to the output of said radio-frequency oscillator for applying said radio-frequency oscillating currents to a dental patient, a voltage supply circuit for receiving A.C. voltage and converting same to a rectified D.C. output voltage capable of activating said radio-frequency oscillator when applied to the oscillator input, means for applying the said output voltage of the supply circuit to the input of the radio-frequency oscillator, and means connected to said voltage supply circuit for selectively changing the waveform of its output voltage and thereby selectively modifying the radio-frequency oscillating currents generated by the oscillator when activated by said output voltage, said voltage supply circuit comprising a single-phase full-wave rectifier circuit comprising plural rectifiers capable of producing a fully-rectified output voltage, and the selective changing means comprising means connected to the rectifier circuit for producing a half-wave rectified output voltAge.

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