Device for monitoring biological signals from patients, while an

Details Device for monitoring biological signals from patients, while an Device for monitoring biological signals from patients, while an

1978-07-25

1981-01-20

Howell, Kyle L.

Surgery

Truss

Pad

128804, 12830317, A61B 1736

Patent

active

042456495

ABSTRACT:
The present invention relates to a system for use in monitoring a biological signal from a patient while an electro-surgical appliance which applies a high r.f. voltage, is being simultaneously used. The signals from a number of transducers are transmitted to an amplifier preferably an ECG amplifier with an input-filter. The amplifier is situated in a Faraday cage which is connected to one of the transducers. The filter is a screened HF-filter and the filter together with the Faraday cage is enclosed in an earth connected grounded container or screen. As a result radiation from the Faraday cage is substantially eliminated.

REFERENCES:
patent: 3500823 (1970-03-01), Richardson et al.
patent: 3620208 (1971-11-01), Higley et al.
patent: 3915154 (1975-10-01), Cosentino
patent: 3960141 (1976-06-01), Bolduc
patent: 3968802 (1976-07-01), Ballis
patent: 4106494 (1978-08-01), McEachern

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