Use of aortic valvo-pumps placed in valve annulus for long-term left ventricular assist.

To provide better anatomical fit and physiologic adaptation, three aortic valvo-pumps with different dimensions were developed. Each pump has a rotor with an impeller and drive magnets and a stator consisting of a motor coil with iron core and an outflow guide vane. The devices had outer diameters of 21 mm, 23 mm, and 25 mm, respectively, and weighted 27 g, 31 g, and 40 g, respectively.

[Present situation and prospects of artificial heart pumps in Jiangsu University].

Since 1995, four different types of artificial heart pumps and artificial valvo-pumps have been developed in Jiangsu University of China. Three types of heart pumps and valvo-pumps have been applied in animal experiments in University Texas, Medical Branch, USA and in Zhenjiang No.1 People's Hospital of China.