Circuit for controlling an electro-therapy device

Details Circuit for controlling an electro-therapy device Circuit for controlling an electro-therapy device

1990-05-11

1991-11-26

Cohen, Lee S.

Surgery

Instruments

Electrical application

606 42, A61B 1739

Patent

active

050679538

ABSTRACT:
For separating voltage potentials from a handle switch in a circuit for controlling an electro-therapy device, the circuit includes at least one electrode carrying high voltage connected to the switch, with the switch being in series with a rectifier and the series combination being electrically connected to a secondary side of a quadrupole component, which transmits alternating current and blocks direct current. The primary side of the quadrupole component is connected to an alternating current source, the secondary side being voltaically separated from the primary side. Actuation of the switch causes a directionally dependent change in an electrical parameter at the primary side of the quadrupole component. An evaluation unit is connected at the primary side, and is also connected to the electrode. The evaluation unit includes circuitry which is capable of altering the delivery of high voltage (a.c. current) to a patient via the electrode, and undertakes such alteration upon the detection of the directionally dependent change in the electrical parameter at the primary side.

REFERENCES:
patent: 4378801 (1983-04-01), Oosten

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