Patent Number: 6,168,718

Title: Method for purifying blood plasma and apparatus suitable therefor

Abstract: A method for purifying conventionally treated blood plasma to remove substantially all residual leukocytes while maintaining useful flow rates for medically useful amounts of plasma utilizes a disposable, heat-sterilizable filter employing one or more depth-type prefilters and at least one intermediate hydrophilic microporous membrane followed by at least one final hydrophilic microporous membrane having a smaller pore size than the intermediate membrane within a common housing. The purified plasma is preferably subjected to chemical treatment to destroy infectious agents such as hepatitis and HIV.

Inventors: Sutter; Mark Alexander (Dexter, MI), Borton; Noel Tod (Chelsea, MI), Bischof; Daniel F. (McHenry, IL), Chapman; John (Lake Villa, IL), Herman; Robert E. (Lindenhurst, IL), Sun; Chong-Son (Lake Forest, IL)

Assignee: Pall Corporation

International Classification: A61M 1/36 (20060101); B01D 69/12 (20060101); B01D 69/00 (20060101); B01D 61/18 (20060101); B01D 63/08 (20060101); B01D 037/00 (); B01D 061/00 ()

Expiration Date: 01/02/2018