Automated intravenous fluid regulating and administering apparat

Details Automated intravenous fluid regulating and administering apparat Automated intravenous fluid regulating and administering apparat

1977-06-02

1978-09-05

Kamm, William E.

Surgery

Respiratory method or device

Ozone or ion generation

128DIG13, A61M 516

Patent

active

041111982

ABSTRACT:
Automated intravenous fluid dispensing apparatus regulating intravenously administered electrolyte solution, nutrient or other fluid flow employs a bidirectionally motor-driven clamp for selectively constricting a fluid passing conduit, typically a tube. The apparatus employs a relaxation oscillator, or timing circuit, having a variable period dependent upon whether fluid is being administered at a specified rate, or too rapidly or too slowly. When either of the latter two conditions obtain, the tube pinch-off motor is excited in an appropriate corrective direction to cause the desired fluid flow rate.
In accordance with varying aspects of the present invention, motor and timing circuit modulation (i.e., speed of system correction response) varies for excess/deficient flow rate conditions depending upon the specified flow rate and upon the constrictive state of the fluid delivery tubing. Also, audio/visual alarming is provided for defined conditions.

REFERENCES:
patent: 3319623 (1967-05-01), London
patent: 3601124 (1971-08-01), Petree
patent: 3609379 (1971-09-01), Hildebrandt
patent: 3631890 (1972-01-01), Lopin
patent: 3655095 (1972-04-01), Kienitz
patent: 3736930 (1973-06-01), Georgi
patent: 3890968 (1975-06-01), Pierce

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