Undulation Pump Total Artificial Heart

-Development of Left-Right Indipendent Motor Type and Implantation-

Abstract

The undulation pump is a continuous flow displacement-type blood pump aiming to develop a compact total artificial heart (TAH) with high performance. By using undulation pumps, the undulation pump TAH (UPTAH), which had an independent motor for left and right pump, was developed. This new TAH works without any compliance chamber or atrial septal hole. The size of UPTAH could be reduced to 75mm in diameter and 80mm in length. The weight was 650g. The implantation of UPTAH was performed in two goats. UPTAH could be implanted successfully into the goat's chest with good fitting. One of the goats survived for 3 hours and 40 minutes, stood and extubated. UPTAH could resolve the problem of the size for implantation, which was the most important subject for the development of an implantable TAH.