Single-needle extracorporeal plasmapheresis circuit

Details Single-needle extracorporeal plasmapheresis circuit Single-needle extracorporeal plasmapheresis circuit

1993-10-07

1994-10-25

Rimell, Sam

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

604 4, A61M 3700

Patent

active

053584821

ABSTRACT:
Single-needle extracorporeal plasmapheresis circuit, has a filter in which plasma is separated from the blood with a membrane subject to transmembrane pressure. Two connections to the filter in the blood circuit include one connection of a line to a single needle. An interposed pump is in that line. The other connection has another line to a blood reservoir. A further line connects the plasma side of the filter membrane to a plasma collection bag. Another pump in the further line is controlled by an automatic control means suitable for maintaining the transmembrane pressure in the filter at a value within an optimum range for the entire duration of the plasmapheresis process.

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