Device for exchanging substances and method of manufacturing the

Liquid purification or separation – Casing divided by membrane into sections having inlet – Energy recovery from treated liquid

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55158, 422 48, B01D 3100

Patent

active

041760697

ABSTRACT:
A device for exchanging substances, in particular, an oxygenator or dialyzer, comprises a stack of semipermeable membranes each having a plurality of longitudinally oriented capillaries embedded therein which open at each end. A porous tissue mass is disposed between adjacent membranes and define transverse gas flow paths therethrough from one side of said stack to the opposite side. A non-porous member closes off the top and the bottom of the stack and each longitudinal end of the tissue mass between adjacent membranes. A connecting piece is arranged at each end of the stack to provide for a flow path, for example, for blood, into the capillaries of each membrane and a similar connecting piece is arranged at the opposite end for the off-flow of the blood. Connecting pieces are arranged at each side for the inflow of a gas, for example, oxygen, into the tissues and for the outflow of the gas on the opposite side of the stack. The gas will diffuse through the tissues and the interspaces of the membranes and due to the partial differential pressure, carbon dioxide will diffuse from the blood space into the gas space. The membranes may be designed with any selective permeability in accordance with the substances to be transferred for use as a dialyzer or ureal substances, a dialyzate is directed through the gas space.

REFERENCES:
patent: 2982416 (1961-05-01), Bell
patent: 3684097 (1972-08-01), Mathewson, Jr. et al.
patent: 3739553 (1973-06-01), Aine
patent: 3746175 (1973-07-01), Markley
patent: 3764018 (1973-10-01), Shaw et al.
patent: 4075091 (1978-02-01), Bellhouse
patent: 4075092 (1978-02-01), White et al.

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