Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Patent
1995-09-28
1997-03-04
Kim, John
Liquid purification or separation
Recirculation
Serially connected distinct treating or storage units
210 85, 210 87, 210 97, 210109, 210117, 2101981, 210252, 2102571, 210258, 2103601, 2104161, 210418, 494 1, 494 2, 494 3, 494 10, 494 35, 604 4, 604 5, 604 6, B01D 2126, B01D 2132, A61M 138, B04B 1102
Patent
active
056075790
ABSTRACT:
An apheresis apparatus for increasing the purity and yield of platelets separated from donated whole blood by centrifugation incorporates a centrifuge for separating whole blood into lower, intermediate, and higher density components. The centrifuge has inlet and outlet ports in selective fluid communication with a container for receiving lower density blood component from the outlet port. A pump is coupled to the container and the inlet port for recirculating lower density blood component from the first container through the inlet port into the centrifuge at a first, substantially constant, rate so as to widen the region of the centrifuge occupied by the intermediate density component without causing the intermediate density component to exit the centrifuge, and subsequently at a second rate, so as to displace intermediate density component from the centrifuge.
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Jorgensen Glen E.
Knapp Tracey E.
Latham, Jr. Allen
Plante Joseph R.
Sibinga Theodoor H. S.
Haemonetics Corporation
Kim John
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