Filtration unit comprising calendered leukocyte-removing layers
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United States of America Patent
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Issued Date -
Aug 14, 2003
app pub date -
Feb 11, 2003
filing date -
Feb 13, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention is directed to a filtration unit intended to allow the removal of leukocytes from a fluid such as blood or a blood component. The filtration unit contains a porous element comprising a medium for the removal of leukocytes by adsorption and filtration of the leukocytes. The medium comprises a number of layers of a first type which are formed from at least one porous non-woven material. At least one layer has been pressed by calendering prior to the stacking thereof. The at least one calendered layer is disposed on the downstream side of the stack. The medium also comprises at least one non-calendered layer. The present invention is also directed to a bag-based system comprising the filtration unit. The system is in particular arranged for the sterile and closed-circuit filtration of the fluid.
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