Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1980-03-06
1983-02-22
Spear, Jr., Frank A.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210 90, 210351, 2104332, B01D 3100, B01D 1300
Patent
active
043747310
ABSTRACT:
A method and apparatus are described for obtaining a desired rate of plasma collection from a membrane plasmapheresis filter having a blood inlet, a blood outlet, a plasma outlet, outer members and a pair of spaced microporous filter membranes defining a blood flow path. A holder is provided for the filter having means for applying pressure against the outer members. The blood pressure at the blood inlet is sensed during plasmapheresis and variable amounts of pressure are applied against the outer members at an angular direction with respect to the membranes. In this manner, the blood flow path gap between the membranes is controlled in accordance with a desired blood pressure adjacent the blood inlet.
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Bilstad Arnold C.
Brown Richard I.
Baxter Travenol Laboratories Inc.
Flattery Paul C.
Gerstman George H.
Ryan Daniel D.
Spear, Jr. Frank A.
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