Electrosurgical control system using tissue conductivity
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United States of America Patent
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Mar 17, 1987
Issued Date -
N/A
app pub date -
Dec 11, 1985
filing date -
May 24, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A Microprocessor controlled Relay is between and in series with the Electro-Surgical Unit and the NiCr loop, to control the output power of the E.S.U. during the operation of Transurethral Resection. The predetermined parameters may input to the Microprocessor for precision control of the E.S.U.. A current probe is connected to the output cable of the E.S.U. to take the variety of the output current of the E.S.U.. The E.S.U. output power will vary according to the variety of the load. By the differences of tissues, the differences of inclusions make the consistency and conductivity vary. The differences of conductivity make the load vary during operating procedure of Transurethral Resection. In other words, the control system can distinguish what tissue is resected according to the variety of the output power of the E.S.U..
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