Apparatus and method for separating plasma or serum from the red

Details Apparatus and method for separating plasma or serum from the red Apparatus and method for separating plasma or serum from the red

1997-07-21

2000-10-17

Cooley, Charles E.

Imperforate bowl: centrifugal separators

Including plurality of miniature bowls distrubuted about...

494 37, 494 47, 494 85, B04B 502

Patent

active

061323535

ABSTRACT:
Red cells are separated from plasma or serum of whole blood by arranging an evacuated tube sealed by a self-sealing stopper above and preferably coaxial with a tube containing a blood sample and sealed by a self-sealing stopper. A hollow double ended needle is held by a fixture and is disposed between and coaxial with the tubes and the tubes are placed in the fixture in a vertical position in a centrifuge and rotated about and spaced from an axis parallel to the axis of the tubes and needle. After the red cells are separated from the serum and/or plasma the tubes are pushed toward one another so that the needle penetrates both stoppers and the serum and/or plasma is drawn into the upper tube. The tubes and needle are separated while still being rotated so that the whole blood components are separated as required.

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