Crib death detector

Details Crib death detector Crib death detector

1977-05-19

1979-10-02

Michell, Robert W.

Surgery

Truss

Pad

A61B 508

Patent

active

041694627

ABSTRACT:
The motion detector described in this disclosure is an apparatus for monitoring the minute movements made by the body during the process of breathing. This is accomplished by converting the body movements into electrical signals with an adapted piezoelectric transducer. This electrical signal is used to restart a counting circuit which uses a variable free running Schmitt-trigger oscillator signal for counting. The output of the counting circuit is connected to an audio alarm through a switch. This switch also connects the Schmitt-trigger oscillator to the audio alarm when the low voltage detector circuit indicates that the supply voltage has dropped below a predetermined level.

REFERENCES:
patent: 3545429 (1970-12-01), Pelta et al.
patent: 3584618 (1971-06-01), Reinhard
patent: 3608542 (1971-09-01), Pacela et al.
patent: 3643652 (1972-02-01), Beltram
patent: 3727606 (1973-04-01), Sielaff
patent: 3730173 (1973-05-01), Deaton
patent: 3782368 (1974-01-01), Riebold
patent: 3802417 (1974-04-01), Lang
patent: 3898981 (1975-08-01), Basham
"Respiration Monitor With Automatic Stimulation for Premature and Newborn Babies," Fresenius Corp., West Germany, Feb. 1974.
Chess, G. F. et al., "Apnea Monitor for Laboratory Animals," Med. & Biol. Engr., v. 14, #1, pp. 97-100, Jan. 1976.

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