Electrosurgery monitor and apparatus

Details Electrosurgery monitor and apparatus Electrosurgery monitor and apparatus

1994-03-14

1996-01-02

Cohen, Lee S.

Surgery

Instruments

Electrical application

128908, A61B 1739

Patent

active

054803993

ABSTRACT:
A monitor for the return electrode of electrosurgery apparatus has three contacts in a socket that connect with two or three contacts on a plug connected to the return electrode. One pair of contacts in the socket is connected across an oscillator that provides an output to a first primary winding of the transformer when there is a low impedance between the contacts. Another pair of contacts is connected across a second primary, winding and produces a loading on the transformer when short circuited by the return electrode, A detector is connected to the secondary winding of the transformer and produces an alarm and disable signal if the signal on the secondary winding falls below a lower limit or exceeds an upper limit,

REFERENCES:
patent: 4171700 (1979-10-01), Farin
patent: 4200104 (1980-04-01), Harris
patent: 4244371 (1981-01-01), Farin
patent: 4416277 (1983-11-01), Newton et al.
patent: 4494541 (1985-01-01), Archibald
patent: 4848335 (1989-07-01), Manes

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