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US 6,387,263 B1Granted
Apparatus and methods for preparing plasma solutions from blood with improved separation of plasma
AssigneeBristol-Myers Squibb Company
InventorsGautam Bhaskar, Glenn A. Joergensen
Life of this patent
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Abstract
An improved plasma separation device and method involve the use of a retaining means with a centrifugal plasma separation device for retaining unwanted blood components, e.g., lipids or lipoproteins, from passing from a separation chamber in the device to a collection chamber in the device along with the separated plasma.
Claims15
An apparatus for separating plasma from blood, comprising:
- a first chamber for centrifuging the blood to obtain the plasma, the first chamber comprising an inner wall, an outer wall, a top wall and a bottom wall, the bottom wall being movable in the first chamber from a first position for receiving and centrifuging the blood to a second position for expelling the plasma from the first chamber;
- retaining means located in the first chamber for retaining blood components having a density less than the density of the plasma in the first chamber while the plasma is being expelled from the first chamber;
- a second chamber in fluid communication with the first chamber, the second chamber receiving the plasma expelled from the first chamber when the bottom wall is moved from the first position to the second position in the first chamber.
Dependencies are inferred from the claim text.