A single needle batch-type blood fractionation system for separating plasma from whole blood includes a disposable flow system having a single-lumen phlebotomy needle and associated donor conduit, a flow-through plasma separation filter, and an in-process fluid reservoir. During an initial draw cycle...http://www.google.es/patents/US4605503?utm_source=gb-gplus-sharePatente US4605503 - Single needle blood fractionation system having adjustable recirculation through filter
Single needle blood fractionation system having adjustable recirculation ...
