Chemistry: physical processes – Physical processes – Crystallization
Patent
1974-05-21
1976-01-27
Richman, Barry S.
Chemistry: physical processes
Physical processes
Crystallization
55158, 128DIG3, A61M 103
Patent
active
039349829
ABSTRACT:
A blood oxygenator comprising a first embodiment of a fluid tight housing having a chamber formed therein one end of which is fluid connected by a conduit to a source of blood to be oxygenated, the other end fluid connected for returning oxygenated blood to the source, a plurality of liquid impermeable, gas permeable tubes extended through the chamber for transferring therethrough oxygen at a pressure higher than the partial pressure of the oxygen in the blood, and one or more membranes forming a sealed cavity in the chamber, with openings formed in the housing for tranferring a fluid, such as oxygen into and out of each cavity, movement of a membrane mixing and pumping the blood flowing through the chamber; a second embodiment wherein baffles are disposed within the chamber no membranes being present, for directing the blood as it flows from the one end to the other end in a continually reversing path with the blood normally flowing normal to the tubes for nonmechanical agitation of the blood; and a third embodiment wherein a plurality of bars are inserted each between the adjacent baffles of the second embodiment for promoting circulating of blood from the center of the flow to the surfaces of the tubes, thus destroying the boundary layer of blood next to the tubes.
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