Air purge unit for auto transfusion apparatus

Details Air purge unit for auto transfusion apparatus Air purge unit for auto transfusion apparatus

1981-08-14

1984-05-01

Rosenbaum, C. Fred

Surgery

Blood drawn and replaced or treated and returned to body

604317, 55159, A61M 3700, A61M 100

Patent

active

044458843

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.

REFERENCES:
patent: 3859998 (1975-01-01), Thomas
patent: 3901808 (1975-08-01), Bokros
patent: 3929130 (1975-12-01), Hargest
patent: 3964479 (1976-06-01), Boag et al.
patent: 4046144 (1977-09-01), McFarlane
Catalog Cut "Gore-Tex Membrane Products", W. L. Gore and Assoc., Elkton, Md. 21921.

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