Plasmapheresis filter device and catheter assembly
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United States of America Patent
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May 31, 2005
Grant Date -
Apr 17, 2003
app pub date -
Oct 17, 2001
filing date -
Oct 17, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter device for being implanted in a blood vessel for carrying out in-vivo plasma separation comprises one or more elongated hollow tubes and a plurality of elongated hollow microporous fibers, each fiber having a first and second end secured to one or more of the elongated hollow tubes with the interior lumen of each of the fibers communicating with the interior of the one or more of the hollow tubes, and wherein the fiber wall has a higher mass density zone adjacent to the outer wall surface and a lower mass density zone adjacent to the inner wall surface.
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