Résumé
The main obstacle of artificial heart in extending its applications in clinic has been its overhigh price rather than technical property. The new generation of artificial heart must enable the patients to be able to afford it. The author's permanent maglev pumps, both VAD(ventricular assist device) and TAH(total artificial heart), reduce their price to lower than 10 USDs, ca.1/10 of the third generation of artificial heart electric maglev pump. Moreover, thepermanent maglev pump not only retains all the advantages of the electric maglev pump, but also has many innovations: its impeller vane was designed according to the streamlines in the pump, so that the blood damage was reduced as low as possible; It can produce either nonpulsatile or pulsatile flow; It can be made in LVAD or TAH, as wish. Besides, it needs no rotor position detector, no electric magnetic push and pull device for rotor suspension, and no feed-back controller for levitation. This is why itscosts can remarkably reduced. Animal experiments for up to two months and clinical trial lasted 43 hours of permanent maglev LVAD demonstrated that the performances were excellent and perfect