Liquid purification or separation – Processes – Separating
Patent
1990-11-19
1991-12-10
Jones, W. Gary
Liquid purification or separation
Processes
Separating
210782, 210789, 210790, 210806, 494 37, 530383, 530381, 530418, 530830, B01D 2126
Patent
active
050715704
ABSTRACT:
A method for the separation of blood into the components thereof, characterized by subjecting the blood to strong centrifugation thereby separating said blood into an upper layer (A) of platelet-deficient blood plasma an intermediate layer (B) of a mixture of platelets and white blood corpuscles, and a lower layer (C) of a red blood corpuscle concentrate, adjusting the hematocrit value of said red blood corpuscle concentrate of (C) to not more than 80% by diluting said red blood corpuscle concentrate with part of said platelet-deficient blood plasma of (A), and subjecting said mixture of (B) to weak centrifugation thereby separating said mixture into a lower layer of white blood corpuscles and an upper layer of a platelet concentrate, and if desired, subjecting the remaining platelet-deficient blood plasma to the treatments of freezing, thawing, and centrifugation thereby separating said platelet-deficient blood plasma into cryoprecipitate and cryoprecipitate-deficient blood plasma, and apparatus therefor.
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Hackh's Chemical Dictionary, 4th Ed., McGraw-Hill, 1969, p. 302.
PCT WO83/01394 (Apr. 28, 1983).
Kawaoka Tatsuhiko
Kitagawa Akiko
Oonaka Yukihiro
Shiraki Hiroshi
Yamamoto Kiyoko
Jones W. Gary
Terumo Corporation
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