Development of a Left Ventricle-to-Aorta Assist Device.

摘要

The results of experiments on eighteen (18) calves are presented. Both normal calves and other animals with induced left ventricular failure were evaluated. Development of an 80ml Model X pump was carried out. The inflow tube diameter was increased to a 24mm diameter to improve pump filling. Disc valve housings were modified to eliminate disc notching. A pneumatic-hydraulic pumping system was evaluated in vivo for 45days. A follow-on electric hydraulic pumping system was evaluated,in vivo,for 72hours. In vitro evaluations of the pneumatic-hydraulic and electric-hydraulic pumping system was carried out.