A pump and pump/oxygenator system including a generally cylindrical pump housing, a tube arranged in a helical turn within the pump housing, and a rotor assembly rotatably mountable in the housing for pumping fluid through the tube by peristaltic action. The tube may be preformed with a D-shaped cross-section,...http://www.google.de/patents/US5429486?utm_source=gb-gplus-sharePatent US5429486 - Single roller blood pump and oxygenator system
