Filtration unit for the selective elimination of a target substance
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United States of America Patent
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Feb 28, 2012
Grant Date -
Sep 18, 2008
app pub date -
Apr 9, 2008
filing date -
Oct 10, 2005
priority date (Note) -
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Abstract
A filtration unit for the selective elimination of a target substance from a biological fluid comprising an external envelope, wherein the envelope encloses a filtering medium comprising: an upstream structure for eliminating at least the target substance comprising a stack of layers that are arranged to allow the flow of fluid through the layers in one direction comprising a non-woven material, and particles interposed between at least some of the layers, wherein the particles have an affinity for the target substance; and a downstream structure for retaining the particles comprising at least one layer of porous material.
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