抄録
A pneumatic ventricular assist device (PVAD) and a pneumatic total artificial heart (PTAH) system were developed. The size and weight of the driver with 2 battery pack are 250 x 110 x 210 mm and 4.3 kg, respectively. The PVAD with Nipro VAD blood pump using the driver achieved the mean pump flow ranging from 3.4 to 6.7 L/min and the mean electric power consumption ranging from 8.0 to 19.7 W in the overflow type circulation mock test. The PVAD was also examiend for 28 days in the chronic animal test using calf. The bypass flow and the electric power consumption were maintained at 4.1+/-0.4 L/min and 13.3+/-0.4 W, respectively. The PTAH using the 2 drive unit was evaluated in the acute animal test using calf. The mean pump flow ranging from 3.9 to 5.4 L/min and the mean electric power consumption ranging from 5.3 to 17.6 W were achieved.
