Intravenous metering device

Details Intravenous metering device Intravenous metering device

1980-08-01

1982-06-29

Truluck, Dalton L.

Surgery

Respiratory method or device

Ozone or ion generation

417435, 128DIG12, A61M 500

Patent

active

043368000

ABSTRACT:
A device for precise metering of liquids for intravenous delivery to a patient and its method of use, the device including a pumping chamber with a reciprocable diaphragm positioned therein such that the cross-sectional area of the liquid flow path through this chamber is approximately equal to the cross-sectional area of the inlet and outlet of the chamber. The device also includes check valves positioned at the pumping chamber inlet and outlet and a gas retention chamber having an upper portion providing for the formation of the gas-liquid interface and a lower portion from which liquid free of gas bubbles may be removed.

REFERENCES:
patent: 2812117 (1957-11-01), Butkus et al.
patent: 3559644 (1971-02-01), Stoft et al.
patent: 3620650 (1971-11-01), Shaw
patent: 4030495 (1977-06-01), Virag
patent: 4126132 (1978-11-01), Portner et al.
patent: 4130991 (1978-12-01), Wright
patent: 4140118 (1979-02-01), Jassawalla
patent: 4142524 (1979-03-01), Jassawalla et al.
patent: 4165208 (1979-08-01), Lundquist

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