08950586 is referenced by 8 patents and cites 638 patents.

A platelet collection device comprising a centrifugal spin-separator container with a cavity having a longitudinal inner surface. A float in the cavity has a base, a platelet collection surface above the base, an outer surface. The float density is below the density of erythrocytes and above the density of plasma. The platelet collection surface has a position on the float which places it below the level of platelets when the float is suspended in separated blood. During centrifugation, a layer of platelets or buffy coat collects closely adjacent the platelet collection surface. Movement of a float having a density greater than whole blood through the sedimenting erythrocytes releases entrapped platelets, increasing the platelet yield.

Title
Methods and apparatus for isolating platelets from blood
Application Number
13/932559
Publication Number
8950586 (B2)
Application Date
July 1, 2013
Publication Date
February 10, 2015
Inventor
Scott R King
San Francisco
CA, US
Richard W Storrs
Berkeley
CA, US
Randel Dorian
San Diego
CA, US
Agent
Harness Dickey
Assignee
Hanuman
CA, US
IPC
G01N 33/49
A61K 35/00
B01L 3/00
B01D 21/00
A61M 1/36
B01D 21/26
B01L 3/14
B04B 1/06
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