Apparatus and method for in-vivo plasmapheresis using periodic backflush
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United States of America Patent
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Issued Date -
Dec 25, 2003
app pub date -
Apr 4, 2003
filing date -
Jan 4, 2001
priority date (Note) -
Abandoned
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Abstract
Apparatus and method for in-vivo plasmapheresis utilizing a plurality of elongated hollow microporous filter fibers periodically interrupt diffusion of blood plasma from a patient, and, for a selected time, backflush fluid into the fibers at a pressure and interval sufficient to cleanse the fiber pores, after which plasma diffusion is resumed. The backflush fluid, preferably a normal saline solution, may contain an anticoagulant such as heparin in suitable concentration for systemic anti-coagulation or for treating the fiber for thromboresistance.
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