Portable patient call

Details Portable patient call Portable patient call

1980-02-10

1981-11-03

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

128782, 340626, 34082519, 34082536, 200 83R, G08B 2100, A61B 510

Patent

active

042988632

ABSTRACT:
A self-contained, electrically-isolated patient call device is provided which permits use by quadriplegic or partially paralyzed patients which includes an extremely sensitive, adjustable, non-sealed, pneumatic, pressure transducer activated by the patient which in turn produces a simultaneous movement of an actuation transducer which actuates an electronic circuit. The switch and electronic circuit can produce both an audible alarm signal and activation of electrical contacts to simultaneously operate a nurse call system. The transducer activated by the patient can be actuated by a minor flexation of a muscle or skin area or can be the result of air pressure created by the breath or blowing against the transducer. This device permits electrical isolation of the patient to prevent shock and allows pneumatic activation of the system mounted directly on or close to the patient to eliminate the necessity for extended movement or positional adjustments which are usually impossible for the patient.

REFERENCES:
patent: 1799126 (1931-03-01), Schirmer
patent: 2736888 (1956-02-01), McLain
patent: 2838629 (1958-06-01), Panzenhagen
patent: 2875291 (1959-02-01), Armstrong et al.
patent: 2910680 (1959-10-01), McLain
patent: 3104293 (1963-09-01), Rendler
patent: 3122731 (1964-02-01), Hutchison
patent: 3234739 (1966-02-01), Pierce, Jr.

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