Sealing for a hollow fiber separatory device

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

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Details

2103232, 210450, 210456, 422 48, B01D 3100

Patent

active

044141106

ABSTRACT:
A hollow fiber medical separatory device of the type including a shell containing a plurality of hollow semipermeable fibers extending through a central dialysate chamber and terminating in spaced apart blood chambers; the device is improved by tubesheets at each end of the fibers having the shape of a frustum of a cone and sized such that the fibers fill the cone to the peripheral edge at the outer end planar surface of the frustum; and a multi-functional blood chamber means forming a blood chamber by pressure sealing engagement with the outer tapered surface of the cone and also pressure sealed to the outer end surface of the shell to prevent air ingress into the dialysate chamber during testing or use.
The invention also includes a method for potting the frusto-conical tubesheets on the end portions of the fibers while the fibers are positioned in the shell which is improved by the use of steps and means to insure centering of the fibers in the cone during centrifugal casting of the resin.

REFERENCES:
patent: 2311708 (1943-02-01), Sundholm
patent: 2507535 (1950-05-01), Madsen
patent: 3339341 (1967-09-01), Maxwell et al.
patent: 3832830 (1974-09-01), Gerow
patent: 4001110 (1977-01-01), Geen et al.
patent: 4125468 (1978-11-01), Joh et al.

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