Monitoring circuit for an RF surgical apparatus

Details Monitoring circuit for an RF surgical apparatus Monitoring circuit for an RF surgical apparatus

1989-01-19

1989-09-05

Cohen, Lee S.

Surgery

Truss

Pad

128908, A61B 1739

Patent

active

048628891

ABSTRACT:
An RF surgical apparatus has an RF power stage, a control circuit for driving the power stage, and an adjustable element for setting a rated value of the output power. To monitor the RF surgical apparatus for the occurrence of an apparatus-caused malfunction, a power measuring unit measures the actual value of the RF power at the output of the RF power stage. Deviations of the actual value from a rated value are monitored. An alarm is generated if the deviation exceeds a selected value. An alarm can be simulated in a test mode by means of an auxiliary circuit.

REFERENCES:
patent: 3747605 (1973-07-01), Cook
patent: 3862636 (1975-01-01), Bell et al.
patent: 4122854 (1978-10-01), Blackett
patent: 4126137 (1978-11-01), Archibald
patent: 4687004 (1987-08-01), Zenkich
patent: 4712544 (1987-12-01), Ensslin

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