Blood filtration methods

Details Blood filtration methods Blood filtration methods

2007-05-15

2007-05-15

Kim, John (Department: 1723)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S767000, C210S800000, C210S806000

Reexamination Certificate

active

10475987

ABSTRACT:
Methods wherein a blood cell concentration gradient is formed in a pooling unit in which blood is pooled before or after introducing the blood into a filter for eliminating leukocytes followed by the filtration are disclosed. By the first method comprising forming a blood cell concentration gradient in the pooling unit before introducing blood into the filter for eliminating leukocytes followed by the filtration, leukocytes can be efficiently eliminated from a whole blood preparation or a high platelet collection ratio can be established while maintaining a high leukocyte elimination ratio. By the second method comprising forming a blood cell concentration gradient in the pooling unit after introducing blood into the filter for eliminating leukocytes followed by the filtration, leukocytes can be efficiently eliminated from a whole blood preparation or a platelet preparation and platelets can be collected at a high ratio.

REFERENCES:
patent: 4985153 (1991-01-01), Kuroda et al.
patent: 5100564 (1992-03-01), Pall et al.
patent: 5594164 (1997-01-01), Bull
patent: 5690815 (1997-11-01), Krasnoff et al.
patent: 05-322886 (1993-12-01), None
patent: 2000-334034 (2000-12-01), None
patent: WO 92/07656 (1992-05-01), None

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