THE NEXT-GENERATION BAYLOR C-GYRO PUMP - ANTITHROMBOGENIC FREE IMPELLER DESIGN FOR LONG-TERM CENTRIFUGAL VAD

被引:16
作者
OHARA, Y
NOSE, Y
机构
[1] Department of Surgery, Baylor College of Medicine, Houston, Texas
关键词
GYRO PUMP; FREE IMPELLER; CENTER CONDUIT; FLOATING MODE; WANDERING ROTATIONAL AXIS;
D O I
10.1111/j.1525-1594.1994.tb02184.x
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
The new generation centrifugal blood pump, the C2 Gyro Pump ''Free Impeller Model'' specifically designed for long-term ventricular assistance and a bridge to transplantation, has been developed. In the free impeller design, the impeller was completely freed from mechanical tethers by eliminating the shaft. This unique design allowed the incorporation of a center-penetrating hole in the impeller, called the center conduit, which accelerate the secondary blood flow from the bottom to the top of the impeller. During in vitro performance tests, two characteristic impeller motions, called floating mode and wandering rotational axis, were observed. In the floating mode, the impeller seemed to be floating without touching the pump casing and resulted in the idea of no bearing contact. Also, the rotational axis of the impeller exhibited a small circular motion and illustrated the idea of no stationary area in the blood path. These three characteristic are expected to he advantageous for antithrombogenesity and low hemolysis which are essential for a long-term centrifugal VAD.
引用
收藏
页码:238 / 243
页数:6
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