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Platelet deposition estimation: A novel method for emulating the pump thrombosis potential of blood pumps

机译:血小板沉积估计:一种模拟血泵泵血栓形成潜力的新方法

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摘要

Abstract Pump thrombosis potential exists in most blood pumps and limits their clinical use. To improve the pump thrombosis performance of blood pumps, a method for emulating the platelet deposition on the flow passage component surfaces inside blood pumps was presented and tested. The method emulates the blood platelet deposition, employing laser‐induced fluorescence tracing technology. The blood pump was rotated in a mock circulation loop with deionized water filled with fluorescent particles. The component surfaces were then explored via laser. The fluorescent particles were induced by laser and imaged in a charge‐coupled device (CCD) camera to show the distribution of fluorescent particles gathering on the blood pump component surfaces. The activated platelet deposition was emulated by fluorescent particle gathering. The experiment showed obvious particle gathering on the interface surfaces and cross‐sectional surface (perpendicular to the flow). This platelet deposition estimation (PDE) method can be easily incorporated in the in vitro testing phase to analyze and decrease a pump’s thrombosis potential before animal experimentation, thereby reducing the cost of blood pump development. This methodology of emulating blood platelet deposition indicates its potential for improving flow passage component structure and reducing device thrombosis of blood pumps.
机译:摘要泵血栓形成潜力在大多数血液泵中都存在并限制其临床使用。为了提高血液泵的泵血栓形成性能,提出并测试了一种模拟流动通道部件表面上的血小板沉积的方法。该方法仿真血小板沉积,采用激光诱导的荧光跟踪技术。血液泵在模拟循环回路中旋转,其中填充有荧光颗粒的去离子水。然后通过激光探索部件表面。通过激光诱导荧光颗粒并在电荷耦合器件(CCD)相机中成像诱导,以显示在血液泵组件表面上聚集的荧光粒子的分布。通过荧光颗粒聚集仿真激活的血小板沉积。该实验显示在界面表面和横截面表面上的明显粒子(垂直于流动)。这种血小板沉积估计(PDE)方法可以在体外测试阶段容易地结合到动物实验前分析和降低泵的血栓形成潜力,从而降低血液泵开发的成本。模拟血小板沉积的这种方法表明其改善流动通道部件结构和降低血液血栓血栓形成的可能性。

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