Folded membrane dialyzer with mechanically sealed edges

Details Folded membrane dialyzer with mechanically sealed edges Folded membrane dialyzer with mechanically sealed edges

1975-04-09

1976-09-07

Spear, Jr., Frank A.

Liquid purification or separation

Casing divided by membrane into sections having inlet

Energy recovery from treated liquid

210445, 210493M, B01D 3100

Patent

active

039792951

ABSTRACT:
A semipermeable membrane is folded in accordion fashion to form a stack of pleats and the edges are sealed so as to isolate the opposite surfaces of the membrane. The stack is contained within a case that provides ports for flow of blood in contact with one surface of the membrane through channels formed by the pleats and also provides ports for flow of a dialysate through channels formed by the pleats in contact with the other surface of the membrane. The serpentine side edges of the membrane are sealed by a solidified plastic material, whereas effective mechanical means are provided to seal the end edges of the folded membrane. The mechanical means include a clamping strip which biases case sealing flanges into a sealed relationship with end portions of the membrane near the end edges, which portions extend from the stack and between the sealing flanges.

REFERENCES:
patent: 3494466 (1970-02-01), Rose et al.
patent: 3780870 (1973-12-01), Esmond
patent: 3864265 (1975-02-01), Markley

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