| 摘要 |
The method comprises withdrawal of a quantity of blood from a blood donor to an annular primary container (2) forming part of a closed flexible processing assembly positioned in a processing space provided in a centrifuge rotor and conformed to the processing assembly. During the withdrawal, the rotor is caused to perform an oscillating movement for agitating the blood whereupon the blood is centrifuged in the primary container to be separated into blood cells and plasma. While the centrifugation is going on the primary container is then compressed to expel the plasma fraction to a secondary container (3) positioned in the central region of the annular primary container. Liquid diluent is then fed to the primary container to resuspend the blood cell fraction while agitation is again accomplished by oscillating the rotor, whereupon the blood cell fraction is returned to the blood donor. The apparatus is a closed flexible processing assembly for use in carrying out the method according to the invention and comprises an annular primary container (2), a secondary container (3) positioned in the central region of the annular primary container, a collapsible connecting duct (7) connecting the portion of the primary container closest to the centre of rotation with the secondary container, and a flexible tube (4) connected to the primary container. |
