Loading patent…
AssigneeHaemonetics Corporation
InventorsAllen Latham, Jr., Glen E. Jorgensen, Theodoor H. S. Sibinga, Joseph R. Plante, Tracey E. Knapp
Estimating the term…
An apheresis apparatus and method is disclosed for increasing the purity and yield of platelets separated from donated whole blood in a centrifuge. The whole blood in the centrifuge is diluted by recirculating fluid, such as plasma or saline, at a first flow rate, to mix with further withdrawn whole blood prior to entering the centrifuge. As plasma is collected, it is recirculated through the centrifuge at a second flow rate to further improve the separation between the intermediate density components, i.e., platelets and white blood cells in the "buffy coat." The plasma is then recirculated through the centrifuge at a third flow rate and platelets are displaced out of the centrifuge while the plasma is recirculating through the centrifuge at the third flow rate.
A method of increasing intermediate density blood component yield from donated whole blood in a centrifugation fractionation volume, the intermediate density component consisting primarily of at least one of a platelet constituent and a white blood cell constituent, the method comprising the steps of:
A method of increasing intermediate density component yield from donated whole blood in a centrifuge having an enclosed fractionation volume, the intermediate density component consisting primarily of at least one of a platelet constituent and a white blood cell constituent, the method comprising:
A method of increasing component yield from donated whole blood in a centrifuge having an enclosed fractionation volume, the method comprising:
Dependencies are inferred from the claim text.