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Leucocyte depleting filter device and method of use

  • US 5,258,127 A
  • Filed: 09/11/1991
  • Issued: 11/02/1993
  • Est. Priority Date: 07/27/1990
  • Status: Expired due to Term
First Claim
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1. A leucocyte depletion filter assembly for removing leucocytes and other deleterious mater from a biological fluid in an extracorporeal circuit, the filter assembly comprising:

  • a housing having an inlet and an outlet and defining a liquid flow path between the inlet and the outlet, anda pleated medium positioned inside the housing across the liquid flow path and including a fibrous means for decreasing the leucocyte content of the liquid, the surface of said fibrous means being modified by exposure to a gas plasma stream, wherein said fibrous means is capable of permitting the passage of red blood cells and platelets therethrough.

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