BLOOD PROCESSING APPARATUS WITH CONTROLLED CELL CAPTURE CHAMBER AND METHOD BACKGROUND OF THE INVENTION
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United States of America Patent
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Issued Date -
May 10, 2007
app pub date -
Nov 4, 2005
filing date -
Nov 4, 2005
priority date (Note) -
Abandoned
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Abstract
A centrifuge for separating blood components, and methods for controlling the centrifuge. The apparatus has a fluid separation chamber having a first frustro-conical segment and a second frustro-conical segment. The second segment has a taper such that particles are subjected to substantially equal and opposite centripetal and fluid flow forces. A camera observes fluid flow, and a controller controls the flow. White blood cells are selectively captured within the second segment and are periodically flushed out of the fluid separation chamber. The camera is used to determine the quantity of particles captured. A limited quantity of high density particles, such as red blood cells, may be captured within the first segment before capturing relatively low density particles, such as white blood cells, within the second segment.
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