Chemical apparatus and process disinfecting – deodorizing – preser – Blood treating device for transfusible blood – Oxygenator
Patent
1992-10-05
1995-01-17
Czaja, Donald E.
Chemical apparatus and process disinfecting, deodorizing, preser
Blood treating device for transfusible blood
Oxygenator
422 45, 422 46, A61M 114
Patent
active
053824075
ABSTRACT:
A membrane oxygenator is disclosed. The oxygenator has a housing, gas and blood inlets and outlets, and a transfer membrane mechanism for transferring oxygen to blood. The oxygenator has a device for increasing its efficiency. The device maintains the total pressure of the oxygenating gas at each point within gas flow paths near yet below the total pressure of the blood opposite the transfer membrane mechanism generally throughout the oxygenator. The mechanism restricts the flow of oxygenating gas exiting through a oxygenating gas outlet with approximately the pressure of blood exiting through a blood outlet by providing a pressurization fluid with approximately the pressure of the blood exiting through the blood outlet. In a preferred embodiment, the oxygenating gas outlet is situated within the hollow portion of the housing.
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Czaja Donald E.
Griswold Gary L.
Hohenshell Jeffrey J.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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