Electronic circuit permitting simultaneous use of stimulating an

Details Electronic circuit permitting simultaneous use of stimulating an Electronic circuit permitting simultaneous use of stimulating an

1979-04-02

1980-11-25

Kamm, William E.

Surgery

Truss

Pad

128901, A61B 504

Patent

active

042352428

ABSTRACT:
An electronic interface module for use with patient monitoring equipment which allows use of the monitoring equipment at the same time that the patient is being treated through the application to his body of electrical stimulating pulses or the like. Body contacting leads used to pick up physiologically generated impulses from the body of the patient are coupled through a suitable amplifier to a sample and hold circuit. The interface module also includes means for generating a control pulse at the onset of a body stimulating impulse which control pulse persists for a predetermined time greater than the period of the stimulating impulse. This control pulse is also applied to the sample and hold circuit. The output from the sample and hold circuit (which may be analog or digital in nature) is, in turn, coupled through suitable matching circuitry to the patient monitoring equipment. The interface module thus eliminates the transmission of the stimulating impulses through the body contacting leads to the patient monitoring equipment while permitting the physiological electrical impulses to be transmitted to the monitoring equipment substantially without any significant change in waveform.

REFERENCES:
patent: 2622150 (1952-12-01), Coulter et al.
patent: 3580241 (1971-05-01), Weinstein
patent: 3628538 (1971-12-01), Vincent
patent: 3651799 (1972-03-01), Daynard
patent: 3662746 (1972-05-01), Saltzberg et al.
patent: 3669120 (1972-06-01), Nielsen
patent: 4000461 (1976-12-01), Barber et al.
patent: 4117848 (1978-10-01), Naylor

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