Air purge unit for auto transfusion apparatus
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United States of America Patent
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-
May 1, 1984
Grant Date -
N/A
app pub date -
Aug 14, 1981
filing date -
Aug 14, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air purge unit for an auto transfusion device is provided wherein a housing having a passageway therein is mounted on the top wall of a blood collection chamber. A filter having pore sizes smaller than the size of red blood cells is disposed within said passgeway together with an umbrella valve and a oneway flap valve which will permit the passage of air from within the collection chamber through the valves to a source of suction or to atmosphere. When the air is purged from the interior of the collection chamber, the red blood cells will block the filter and prevent the further passage of fluid therethrough.
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