A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/81.2
A61M 5/14 (2006.01) A61H 31/02 (2006.01)
Patent
CA 1127490
ABSTRACT OF THE DISCLOSURE Blood oxygenator of the membrane type in which a semi-permeable membrane (by which is meant a membrane that is permeable to gas but not to aqueous liquid) separates the blood from the oxygen but allows diffusion of oxygen into the blood and of carbon dioxide from the bood into the stream of gas; such blood oxygenator being characterized by a plurality of oxygen, water and blood units, each blood unit having a frame which together with semi-permeable membranes forms a blood cavity, the blood entering each such unit from one side, crossing the blood cavity and exiting on the other side, such blood units being isolated from the water units such that leakage of water into the blood units is precluded. Also applicable to oxygenators in which membranes of blood units are permeable to water and small molecules but not to large molecules or particles of the blood. Also a modification or improvement in which a stack of blood, water and oxygen units are enclosed in a box-like housing by means of bolts passing through the cover, the frames of the units and the bottom to clamp the units together and maintain uniform depth of blood paths; such also including blood plenums on opposite sides of the housing bounded by the sides of the housing, the top and bottom covers of the housing and the stack of units, also a construction whereby the oxygen units are open at opposite ends to plenums through which oxygen passes.
298421
Bramson Mogens L.
George H. Riches And Associates
LandOfFree
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