Membrane apparatus/process adapted for plasmapheresis
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United States of America Patent
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-
Aug 18, 1987
Grant Date -
N/A
app pub date -
Jan 10, 1983
filing date -
Jan 11, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus/process for the withdrawal and return of liquid materials from a donor source, comprising means for withdrawing whole blood from a mammalian donor; a membranous blood filtration cell which includes a membrane separator/filter, a compartment downstream therefrom for receiving a blood plasma fraction and a compartment upstream thereof for receiving a blood cellular component fraction; conduit means for communicating the withdrawal means and an inlet end of the upstream compartment; a collection vessel; conduit means for communicating an outlet end of said upstream compartment and said collection vessel; means for determining the volume of liquid material withdrawn from the donor source during a withdrawal stage; means for back-filtering and returning liquid material from said collection vessel to the donor source; a second collection vessel; and conduit means for communicating an outlet end of the downstream compartment and the second collection vessel.
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