Membrane blood oxygenator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 17, 1995
Issued Date -
N/A
app pub date -
Oct 5, 1992
filing date -
Dec 14, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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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