Compact centrifuge device and use of same
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United States of America Patent
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Mar 16, 2004
Grant Date -
N/A
app pub date -
Jan 17, 2002
filing date -
Apr 9, 1999
priority date (Note) -
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Abstract
This device includes a centrifugal cup or bowl (2) rotating at the speed of 2.omega. around its revolving axis, a separation chamber (3) connected to the center of this cup or bowl (3) by three channels (4, 5, 6) integral to three flexible tubes (4a, 5a, 6a) forming open loops driven at the speed of .omega. while their second respect extremities, coaxially located with respect to the first ones, are stationary. The radius and height of this cup or bowl (2) are between 25-50 mm, and 75 to 125% respectively of this radius; its angular speed 2.omega. is >500 rad/sec to ensure a flow rate for the liquid to be centrifuged of at least 100 ml/min. The material and the dimensions of the tubes (4a, 5a, 6a) are chosen so that the traction force exerted on them is <0.7 N/mm.sup.2, its elasticity module is <5 N/mm.sup.2 and its rupturing resistance to alternate bending is higher than 1.5 N/mm.sup.2.
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