Imperforate bowl: centrifugal separators – With condition responsive means – For controlling outlet valve
Patent
1997-08-29
1999-08-10
Kim, John
Imperforate bowl: centrifugal separators
With condition responsive means
For controlling outlet valve
210 85, 210 86, 494 7, 494 10, 494 40, 494 56, B04B 116, B04B 110, B04B 910
Patent
active
059350512
ABSTRACT:
A separator and a method for quickly separating an aliquot of plasma or serum from cells in a sample of blood is provided herein. The separator includes a housing which defines a separation container, an outlet aperture, a valve which selectively seals the outlet aperture, and a spinner. Initially, the spinner rotates the housing at a separation speed which causes the heavier cells to separate from the serum or plasma. Subsequently, the spinner rotates the housing at a faster, expellant speed which causes the valve to open and the cells to be expelled through the outlet aperture. After the cells have been expelled from the separation container, rotation of the housing is stopped and the serum or plasma is collected from the separation container. Since the separator provided herein does not use a separation gel, the separator is easy to clean and reusable.
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Beckman Instruments Inc.
Harder P. R.
Kim John
May William H.
Roeder Steven G.
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