Adaptive filtrate flow control system using controlled reduction

Details Adaptive filtrate flow control system using controlled reduction Adaptive filtrate flow control system using controlled reduction

1988-02-05

1991-02-19

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21032168, B01D 6122

Patent

active

049941887

ABSTRACT:
The efficiency of a blood plasmapheresis filter is purposefully reduced at low input blood flow rates so as to prevent possibly excessive hematocrit which may make it difficult or impossible to handle the resulting blood cell concentrate (e.g., for infusion purposes) and/or which may cause accompanying red cell damage. Where filter efficiency is a function of rpm of a spinning element, such controlled reduction may be achieved by simply controlling spinner rpm as a function (e.g., linear over at least some range) of the input blood flow rate.

REFERENCES:
patent: 4579662 (1986-04-01), Jonsson
patent: 4755300 (1988-07-01), Fischel et al.
patent: 4806132 (1989-02-01), Campbell

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