An Experimental Study Of A Pneumatic Valved Catheter Pump LVAD

Severe left ventricular failure in patients with heart diseases is the prime cause of death. Left ventricular assistance (LVA) is the first chioce when conventional therapy or intraaortic balloon counterpulsation (IA BP) is ineffective in improving the hemodynamic status of some patients. The study and development of left ventricular assist devices has usualy been the focus of attention at home and abroad. In order to meet the clinical needs, we developed a new kind of LVAD, a pneumatic valved catheter pump LVAD (PVCP LVAD). It, driven with Datascope-82 console, consists of a membrane pump, a catheter with a distally inlet valve and a prozimaly outlet valve (No; â…  -â…£, outer diameter: 7-10mm) and a blood vessel prothesis for inserting the valved catheter into aorta. The valved catheter is passed retrograde through aortic valve into the left ventricle (LV). PVCP LVAD, under the action of the two valves in the valved catheter, can pump the blood from the LV into the aorta. An experimental study, in...