[The animal experiments and clinical trial of impeller pump used as left ventricular or biventricular assist device].
The authors' impeller pump as a left ventricular or biventricular assist device was evaluated in animal experiments and clinical trial. Three calves survived over 6 weeks in left ventricular assist experiments and neither blood damage nor organ dysfunction of the animals was detected. In clinical trial, the pump supported both the greater and lesser circulation of a 6-year-old child with trilogy of Fallot and low output syndrome after open heart surgery. In 43 hours the pump worked properly. The pump weighing 240 g can perform either in pulsatile or in nonpulsatile mode. In pulsatile pumping, the impeller changes its rotating speed periodically by introducing a square wave form voltage into the motor coil.
Qian
K
K
Jiangsu Uni of Sci & Tech, Zhenjiang 212013.
Zeng
P
P
Ru
W
W
Yuan
H
H
Zheng
M
M
D000818:Animals; D002417:Cattle; D002648:Child; D002986:Clinical Trials as Topic; D004867:Equipment Design; D004868:Equipment Failure; D006353:Heart-Assist Devices; D006801:Humans; D008297:Male; D014286:Trilogy of Fallot / Q000601:surgery