A portable hemodialysis system wherein blood and dialysate are pumped in the extracorporeal flow circuit by peristaltic compression of the blood and dialysate flow lines to provide high frequency pulsatile flows in the respective fluid lines. The pulsatile flows of blood and dialysate are passed through...http://www.google.es/patents/US4083777?utm_source=gb-gplus-sharePatente US4083777 - Portable hemodialysis system