Intravenous metering device

Details Intravenous metering device Intravenous metering device

1981-06-30

1984-06-12

Truluck, Dalton L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604123, 417 38, 417443, 417510, A61M 500

Patent

active

044539312

ABSTRACT:
A device for precise metering of liquids for intravenous delivery to a patient, the device including a pumping chamber with a reciprocable diaphragm positioned therein. The device also includes valves positioned at the pumping chamber inlet and outlet, the valve at the pumping chamber inlet being operated independently of the pressure within the pumping chamber. The device also includes 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: 3543752 (1970-12-01), Hesse et al.
patent: 4126132 (1978-11-01), Portner et al.
patent: 4140118 (1979-02-01), Jassawalla
patent: 4142524 (1979-03-01), Jassawalla et al.
patent: 4236880 (1980-12-01), Archibald
patent: 4276004 (1981-06-01), Hahn
patent: 4277227 (1981-07-01), Jenkins
patent: 4303376 (1981-12-01), Siekmann
patent: 4336800 (1982-06-01), Pastrone

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