Fluid collection device with phase separation means

Details Fluid collection device with phase separation means Fluid collection device with phase separation means

B - Operations, Transporting

01

D

233/1

B01D 21/26 (2006.01) G01N 33/49 (2006.01)

Patent

CA 1066680

ABSTRACT OF THE DISCLOSURE A fluid collection device includes a blood collection tube having a negative pressure therein and sealed at one end by a stopper pierceable by a needle cannula for drawing a blood specimen into the tube for centrifugal separation into a relatively light phase, plasma or serum, and a relatively heavy phase including the blood cells. A quantity of a gel-like mixture of liquid hydrocarbon-polymer, such as polybutene, and an inorganic powder, such as silica powder, is disposed in the tube. The gel-like mixture has a specific gravity intermediate those of the relatively light and heavy phases of the blood so that during centrifugation, the gel-like mixture moves to a position between the phases to provide a partition barrier between them.

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