A continuous-flow left ventricular assist device (LVAD) that Penn State University (PSU) has developed utilizes Tesla turbomachinery technology [1,2]. We recently tested the second version of the PSU Tesla LVAD; the size of the pump was significantly reduced while avoiding any degradation of hemodynamic and hemolytic characteristics. The primary goal of this study is to examine the (i) hydrodynamic performance and (ii) wall shear stresses on the volute and rotor. The secondary goal is design optimization in terms of the pump efficiency by varying design parameters such as (i) number of disks, (ii) disk gap spacing, and (iii) shape of the back cap (with or without a sharp fluid guider). Design iteration studies were performed at 6000 rpm and a range of flow rates from 2 to 81pm.
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机译：宾夕法尼亚州立大学（PSU）开发的连续流左心室辅助设备（LVAD）利用Tesla涡轮机械技术[1,2]。我们最近测试了PSU Tesla LVAD的第二个版本;泵的尺寸显着减小，同时避免了血液动力学和溶血特性的任何降低。这项研究的主要目的是研究（i）流体力学性能和（ii）蜗壳和转子上的壁剪应力。次要目标是通过改变设计参数（例如（i）圆盘数量，（ii）圆盘间隙间距和（iii）后盖的形状（带或不带尖锐的流体导向器））来优化泵效率。 。设计迭代研究以6000 rpm的速度和2至81pm的流速范围进行。
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