Surgery – Respiratory method or device – Ozone or ion generation
Patent
1974-07-22
1976-01-13
Truluck, Dalton L.
Surgery
Respiratory method or device
Ozone or ion generation
128227, 222 55, 222 67, A61M 514
Patent
active
039318184
ABSTRACT:
A liquid administration apparatus includes a closed fluid system enabled by a double bore metering tube which leads from an intermediate sump fed by a supply container to a flow controlling float chamber. The supply container can either be of the flexible bag type or the bottle type, both commonly used for infusing physiological fluids into the circulatory system of a patient. The float chamber is movably mounted on a flow indicating scale to set calibrated rates of flow. The sump is divided into a reservoir portion and an over-flow portion by a dam and an air inlet tube projects above the dam. A liquid inlet means leads from the reservoir portion through a metering tube to the float chamber. The float chamber includes a float which is buoyed by liquid entering the float chamber and centered by splines projecting inwardly of the float chamber. The float in the float chamber functions as a valve to selectively open and close a port leading to the infusion needle of the apparatus. In one alternative embodiment the float chamber is made transparent since drops of physiological fluid are formed in that chamber. In the preferred embodiment, drops are formed only in the sump and the sump is therefore made transparent for observation of the functioning of the apparatus. Specifically, a closed system is presented whereby a pressure equalizing air tube connects the sump and the float chamber, neither of which is vented to the outside atmosphere. This makes the system self-compensating in maintaining a constant head for the fluid between the sump and the float chamber.
REFERENCES:
patent: 1844342 (1932-02-01), Berman
patent: 2090273 (1937-08-01), Wagner
patent: 2865534 (1958-12-01), Barnes
patent: 3001397 (1961-09-01), Leonard
patent: 3216418 (1965-11-01), Scislowicz
patent: 3756233 (1973-09-01), Goldowsky
Lancet -- Apr. 6, 1963 -- pp. 754-755.
Truluck Dalton L.
Yavner Stanley J.
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