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首页> 外文期刊>Medical engineering & physics. >Evaluation of four blood pump geometries: fluorescent particle flow visualisation technique.
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Evaluation of four blood pump geometries: fluorescent particle flow visualisation technique.

机译：评估四种血泵的几何形状：荧光粒子流可视化技术。

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Artificial blood pumps play an increasingly important role in the treatment of end-stage cardiac failure. The fluid dynamics of blood flow through such devices crucially affects their clinical effectiveness. Specifically, if the flow of blood stagnates or slowly re-circulates thrombus formation can occur and the avoidance of such flow features is a primary consideration in the design of pumps. The present study concerns the development of a fluorescent particle visualisation technique and its application to investigate the flow environments in four prototype blood pump designs. The procedure involves recording video images of eight illuminated cross sections through the pumping chambers as the pumps operate in a mock circulatory loop using a test fluid seeded with fluorescent particles. The technique enabled a semi-quantitative characterisation of the entire flow field, throughout the pumping cycle, to be performed for each pump design. Flow features were then related to design properties of the individual pumps and recommendations made for design optimisation.
机译：人工血泵在终末期心力衰竭的治疗中起着越来越重要的作用。通过此类设备的血液流动动力学会严重影响其临床效果。具体而言，如果血流停滞或缓慢地再循环，可能会形成血栓，而避免这种血流特征是泵设计中的主要考虑因素。本研究涉及荧光粒子可视化技术的发展及其在四个原型血泵设计中研究流动环境的应用。该程序涉及通过泵送室记录八个照明横截面的视频图像，因为泵使用接种有荧光颗粒的测试流体在模拟循环回路中运行。该技术可以在整个泵送周期内对每种泵设计进行整个流场的半定量表征。然后将流量特性与各个泵的设计特性以及为优化设计而提出的建议相关。

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