Electromedical patient monitoring system

Details Electromedical patient monitoring system Electromedical patient monitoring system

1972-07-07

1976-02-10

Kamm, William E.

Surgery

Truss

Perineal

A61B 504

Patent

active

039372146

ABSTRACT:
An electromedical patient monitoring system having a minimum likelihood of electrical injury to a patient is provided. Signals from a body-contacting sensor are amplified and processed by self-contained, battery powered apparatus for display by an electrical monitor, such as a recorder. In a preferred embodiment, the apparatus includes an input circuit operatively connected to the sensor and including an AC amplifier. The output of the amplifier is inductively coupled to a synchronous detector, part of an output circuit operatively connected to the monitor. Operating power for both the amplifier and detector is derived from a battery-powered audio oscillator to which the input and output circuits are inductively coupled. Thus, the apparatus provides DC isolation of the sensor from both the monitor and from the power source for the apparatus. In addition, the apparatus includes provision for inductively coupling a portion of the oscillator output to an excitor circuit for a sensor of a type requiring excitation by electrical oscillations.

REFERENCES:
patent: 2634721 (1953-04-01), Greenweed, Jr.
patent: 2640389 (1953-06-01), Liston
patent: 3218638 (1965-11-01), Honig
patent: 3576554 (1971-04-01), Temps, Jr. et al.
patent: 3690313 (1972-09-01), Weppner et al.

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