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Blood cell separation devices having a membrane with particular coating

  • US 5,972,217 A
  • Filed: 11/17/1997
  • Issued: 10/26/1999
  • Est. Priority Date: 10/17/1994
  • Status: Expired due to Fees
First Claim
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1. A blood filtration device comprising:

  • a housing defining an interior periphery;

    a rotating structure mounted within the interior periphery and defining with the housing an annular gap within the interior periphery;

    an inlet fluid path for allowing a blood product to flow into the annular gap;

    the rotating structure including an exterior surface that includes a filter membrane; and

    the filter membrane having a coating thereon comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight bifunctional diamino-polyoxyalkylene derivative, wherein the polyalkylene oxides can comprise up to polybutylene oxide.

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