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Electric knife device

  • US 4,102,341 A
  • Filed: 12/16/1976
  • Issued: 07/25/1978
  • Est. Priority Date: 12/20/1975
  • Status: Expired due to Term
First Claim
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1. An electric knife device comprising a high frequency current source having first and second output terminals, a knife electrode connected to the first output terminal, a patient electrode connected to the second output terminal and to be electrically contacted with the patient, first current detector means for detecting the current flowing between the first output terminal and said knife electrode, second current detector means for detecting the current flowing between the second output terminal and said patient electrode, division circuit means for calculating the ratio between the outputs of said first and second current detector means and means fed by the output of said division circuit means for controlling the high frequency current flowing through said knife electrode in accordance with the ratio calculated by said division circuit means.

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