Intravenous metering device

Details Intravenous metering device Intravenous metering device

A - Human Necessities

61

M

128/91

A61M 5/14 (2006.01) A61M 5/142 (2006.01) A61M 5/36 (2006.01) G01F 11/08 (2006.01)

Patent

CA 1164754

ABSTRACT A device for precise metering of liquids for intra- venous delivery to a patient and its method of use, the device including a pumping chamber with a recipro- cable 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 information of the gas-liquid interface and a lower portion from which liquid free of gas bubbles may be removed.

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