Kerrigan J P, Yamazaki K, Meyer R K, Mori T, Otake Y, Outa E, Umezu M, Borovetz H S, Kormos R L, Griffith B P, Koyanagi H, Antaki J F
University of Pittsburgh Medical Center, Pennsylvania, USA.
Artif Organs. 1996 Jun;20(6):534-40.
Flow visualization is typically applied in blood pump development to both confirm the design expectations and identify regions that may be predisposed to blood element deposition and trauma. Rotary pumps, in particular, place high demands on the technique chosen to visualize the flow given the limited visual accessibility of the flow path and the high impeller speeds. Fluorescent image-tracking velocimetry currently is used at the University of Pittsburgh Medical Center to visualize flow accurately inside of these pumps both qualitatively and quantitatively. Flow patterns under steady conditions within an intraventricular axial flow, left ventricular assist pump (prototype No. 7, SUN Medical Technology Research Corporation, Nagano, Japan) were investigated using this technique. The flow fields at the impeller-stator interface and at the pump outlet were given specific attention. This allowed the assessment of the fluid dynamics throughout the hydrodynamic design limits of the pump.
流动可视化通常应用于血泵开发中，以确认设计预期并识别可能易于发生血液成分沉积和损伤的区域。特别是旋转泵，鉴于流道的可视性有限且叶轮转速高，对用于可视化流动的技术提出了很高的要求。目前，匹兹堡大学医学中心使用荧光图像跟踪测速技术来定性和定量地准确可视化这些泵内部的流动。使用该技术研究了心室轴流左心室辅助泵（日本长野太阳医疗技术研究公司原型7号）在稳定条件下的流动模式。特别关注了叶轮 - 定子界面和泵出口处的流场。这有助于评估泵在整个流体动力学设计极限范围内的流体动力学。
