Development of a miniature undulation pump for the distributed artificial heart

Research of the distributed artificial heart is important not only to acqui re the means of individual organ perfusion but also to clarify the characte ristics of the organ and the mechanism of blood distribution. To investigat e the distributed artificial heart, the miniature undulation pump was devel oped. The outer diameter and the thickness of the developed pump were 38 mm and 11 mm. respectively. The priming volume of the pump was 3.2 ml. The to tal size including the motor unit was 38 mm in diameter and 32 mm in length . The total weight was 67.5 g. The total volume was 27.5 ml. The pump was d riven with pulse width modulation by using a 1 chip motor controller. More than 5 L/min of continuous output could be obtained. The results showed tha t the developed miniature undulation pump system had enough performance for individual organ perfusion.