Abstract
Precessional displacement pump (PDP) is a small size continuous flow displacement-type blood pump with a new principle. A total artificial heart (TAH) was designed by using two PDPs and one motor. Under the design, two prototype models of PDP for the use as left side heart were constructed and their performance were examined. The priming volume and maximum continuous output of the two prototypes were 22ml, 20L/min. with 120mmHg of after load and 16ml, 19L/min. with 125mmHg of after load, respectively. The experimental model of pulsatile TAH was constructed by using two PDPs with 16ml of priming volume. The maximum pulsatile output was 7L/min. with 100mmHg of mean after load. These data demonstrated that a pulsatile TAH could be realized by using PDPs
