Blood component processing systems and methods are coupled to a blood component processing device. The systems and methods include a fluid circuit that comprises at least one fluid pressure actuated pump station, at least one fluid flow path communicating with the pump station, and at least one valve...http://www.google.com/patents/US6846161?utm_source=gb-gplus-sharePatent US6846161 - Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use
