Patent ID: 6464476
Filing Date: 2002-10-15
Classification: F04B

Abstract:
A blood pump for pumping blood, comprising:a pump housing having a non-oxygenated blood inlet, an non-oxygenated blood outlet, an oxygenated blood inlet, and an oxygenated blood outlet; a non-oxygenated bladder for receiving non-oxygenated blood and for outputting non-oxygenated blood at a first pulse rate; an oxygenated bladder for receiving oxygenated blood and for outputting oxygenated blood at a second pulse rate; a non-oxygenated blood inlet check valve for inputting non-oxygenated blood into the non-oxygenated bladder; a non-oxygenated blood outlet check valve for outputting non-oxygenated blood from the non-oxygenated bladder; an oxygenated blood inlet check valve for inputting oxygenated blood into the oxygenated bladder; an oxygenated blood outlet check valve for outputting oxygenated blood from the oxygenated bladder; an inlet plate secured to an inlet end of each bladder; an outlet plate secured to an outlet end of each bladder; a prime mover for linearly moving one of the inlet plate and the outlet plate with respect to the other of the inlet plate and the outlet plate secured to the same bladder, thereby altering the volume within the bladder to pump the blood; and a control member for controlling linear movement of each of the movable plates in axially opposing directions while controlling the first pulse rate and the second pulse rate.