Filter for selectively eliminating leukocytes

Details Filter for selectively eliminating leukocytes Filter for selectively eliminating leukocytes

2002-12-02

2008-08-12

Kim, John (Department: 1797)

Liquid purification or separation

Filter

Material

C210S483000, C210S488000, C210S489000, C210S490000, C210S500240, C210S500370, C210S506000

Reexamination Certificate

active

07410066

ABSTRACT:
It is intended to provide a filter for selectively removing leukocytes whereby leukocytes can be selectively and efficiently removed without worsening in the performance due to sterilization while causing little elution and minimizing loss in platelets. Namely, a filter for selectively removing leukocytes which is highly tolerant to sterilization and contains a polymer on the filter surface, characterized in that the polymer consists of a hydroxyalkyl (meth)acrylate unit having 3 or 4 carbon atoms in the alkyl moiety, a monomer unit having a basic nitrogen-containing functional group, and a monomer unit having an ethylene oxide chain with a repetition number of 2 to 9, the content of the monomer unit having the basic nitrogen-containing functional group ranges from 2% by mol to 9% by mol in the polymer, and the ethylene oxide chain content ranges from 1% by weight to 10% by weight in the polymer.

REFERENCES:
patent: 4936998 (1990-06-01), Nishimura et al.
patent: 6267898 (2001-07-01), Fukuda et al.
patent: 6352642 (2002-03-01), Fukuda et al.
patent: 2002-282351 (2002-10-01), None
patent: 2003-038641 (2003-02-01), None
English Translation copy of JP 2003-038641.
English Translation copy of JP 2002-282351.

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