Apparatus for filtering plasma

Details Apparatus for filtering plasma Apparatus for filtering plasma

1994-02-25

1995-10-24

Kim, John

Liquid purification or separation

Flow, fluid pressure or material level, responsive

210 90, 210108, 210111, 210130, 210175, 2101951, 210201, 210202, 210203, 210252, 210254, 210295, 2103231, 21033301, 210407, 210409, 210411, 210420, 210427, 210436, 210472, 604 4, 604 5, 604 6, B01D 3600, B01D 2962

Patent

active

054607159

ABSTRACT:
In a process for filtering plasma by separating blood into blood cells and plasma by a primary filter and filtering the separated plasma by a secondary filter to remove macromolecules from the plasma as harmful components, the loss of plasma to be discarded from the system by a procedure for eliminating plugging of the secondary filter can be diminished by opening an inner chamber of the secondary filter to the atmosphere to thereby lower the internal pressure of the chamber every time increase of the pressure to an upper limit value due to an increasing plugging tendency of the secondary filter is detected, and washing the interior of the secondary filter from the inner and outer chamber sides after the internal pressure has lowered.

REFERENCES:
patent: 4350156 (1982-09-01), Malchesky et al.
patent: 4834888 (1989-05-01), Polaschegg
patent: 4963253 (1990-10-01), Yen

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