Abstract: The system includes a plasmapheresis instrument and a harness set applied to the instrument. The harness set has a single venepuncture needle and is configured, when applied to the instrument, to pump blood from a donor through a separator for collection of its constituent parts in a reservoir and a collection container, respectively. During an infusion cycle, which alternates with the collection cycle, the blood constituent from the reservoir and a replacement fluid are mixed externally of the reservoir and pumped to the donor.

Abstract: An apparatus and method of separating a component from a collected quantity of fluid. The apparatus includes a dual member centrifuge and an associated fluid flow transfer set. The transfer set has a collection container in which a quantity of fluid can be initially accumulated. The collection container is formed as a disk-shaped plastic member with an elongated generally radially extending barrier member formed therein. A component collection container is in fluid flow communication with the disk-shaped container. The method provides for centrifugation of the collection container in the dual member centrifuge thereby separating out the selected fluid component. The component can then be pumped out of the collection container into the component accumulation container. The residual fluid can be sealed in the collection container for later use. The component collection container can be separated and sealed also for later use.