Method and apparatus for blood separations
First Claim
1. A method for separating blood comprising:
- drawing a first volume of whole blood from a source;
processing said first volume of whole blood through a continuous-flow centrifuge disk, the continuous-flow centrifuge disk including an inner disk wall;
an outer disk wall; and
a separation channel therebetween, including;
an inner surface, an outer surface, an inlet port to introduce whole blood into said separation channel, a first outlet port to remove concentrated red blood cells from said separation channel, a second outlet port to remove plasma from said separation channel, and wherein said inner surface and said outer surface of said separation channel are each independently configured at an angle relative to a spin axis;
collecting a first volume of red blood cells;
collecting a first volume of plasma;
returning at least a portion of the first volume of red blood cells to the source;
drawing a final volume of whole blood from the source;
processing said final volume of whole blood through the continuous-flow centrifuge disk; and
collecting a final volume of red blood cells; and
collecting a final volume of plasma.
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Accused Products
Abstract
Described herein is a method and apparatus for collecting and separating whole blood into its components, including collecting an amount of plasma and red blood cells. The collection and separation system includes a console and a disposable set. The method may include processing the blood through the centrifuge, collecting plasma, collecting red blood cells and returning red blood cells until a desired plasma volume is reached. Then a final volume of red blood cells and plasma may be collected. The disposable set may include a manifold, a CFC, and various components attached by tubing. These components may include one or more solution bags, blood product bags, bacterial filters, leukofilters, and a donor blood collection tube with access needle.
81 Citations
26 Claims
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1. A method for separating blood comprising:
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drawing a first volume of whole blood from a source;
processing said first volume of whole blood through a continuous-flow centrifuge disk, the continuous-flow centrifuge disk including an inner disk wall;
an outer disk wall; and
a separation channel therebetween, including;
an inner surface, an outer surface, an inlet port to introduce whole blood into said separation channel, a first outlet port to remove concentrated red blood cells from said separation channel, a second outlet port to remove plasma from said separation channel, and wherein said inner surface and said outer surface of said separation channel are each independently configured at an angle relative to a spin axis;
collecting a first volume of red blood cells;
collecting a first volume of plasma;
returning at least a portion of the first volume of red blood cells to the source;
drawing a final volume of whole blood from the source;
processing said final volume of whole blood through the continuous-flow centrifuge disk; and
collecting a final volume of red blood cells; and
collecting a final volume of plasma. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for separating whole blood into its constituent parts, comprising:
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collecting whole blood from a source;
processing said whole blood through a continuous-flow centrifuge disk;
collecting a first volume of red blood cells;
collecting a first volume of plasma;
returning at least a portion of the first volume of red blood cells to the source;
collecting a second volume of red blood cells;
collecting a second volume of plasma; and
repeating the returning of red blood cells, the collecting of plasma and the collecting of red blood cells until a desired total volume of plasma has been collected. - View Dependent Claims (15)
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16. An apparatus for separating blood into its components comprising:
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a needle to draw whole blood from a source, a continuous-flow centrifuge disk to process the whole blood, the continuous-flow centrifuge disk including an inner disk wall;
an outer disk wall; and
a separation channel therebetween, including;
an inner surface, an outer surface, an inlet port to introduce whole blood into said separation channel, a first outlet port to remove concentrated red blood cells from said separation channel, a second outlet port to remove plasma from said separation channel, wherein said inner surface and said outer surface of said separation channel are each independently configured at an angle relative to a spin axis;
a first collection reservoir to collect a first volume of red blood cells and a final volume of red blood cells;
a second collection reservoir to collect a first volume of plasma and a final volume of plasma;
tubing fluidly connecting the needle, the first collection reservoir, and the second collection reservoir to the continuous-flow centrifuge disk;
a pump on tubing between the first collection reservoir and the continuous-flow centrifuge disk to return the first volume of red blood cells to the source. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification