Abstract: A pulsatile flow delivery apparatus includes a horse shoe shaped raceway, a tube, a milking mechanism, an occlusive clamp and a control device. The tube is disposed along the raceway. The milking mechanism has a pivot shaft, a rotating arm fixedly secured to the shaft and one milking roller rotatably mounted on one end of the rotating arm. The occlusive clamp has a stationary component, a mobile component disposed in opposed relation to the stationary component, and an actuator connected to the mobile component for moving the mobile component toward and away from the stationary component to clamp and release the downstream portion of the tube. The timing of opening and closing of the occlusive clamp is controlled by the control device to produce a pulsatile flow.