BACKGROUND:Implantable devices such as ventricular assist devices provide appropriate treatment for patients with advanced heart failure. Unfortunately these devices still have many problems, particularly related to blood damage. OBJECTIVE:The aim of this research is to examine two new ventricularassist devices in terms of induced shear stress, exposure time, and induced hemolysis. METHOD:Reverse engineering was used on multiple axial flow ventricular assist devices to collect all the details related to the designs (diameters, lengths, blade angles…), which were used to build two prototypes: Model A and Model B. RESULTS:The obtained results were close to a large extent, except for static pressure rise, where the difference was clear. CONCLUSION:Compared with what has been published in other studies, the overall performance of both models was excellent.

中文翻译：

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心室辅助装置中剪切应力相关溶血的分析

背景：心室辅助装置等植入式装置可为晚期心力衰竭患者提供适当的治疗。不幸的是，这些设备仍然存在许多问题，尤其是与血液损伤有关的问题。目的：本研究的目的是在诱发剪切应力、暴露时间和诱发溶血方面检查两种新型心室辅助装置。方法：对多个轴流式心室辅助装置进行逆向工程，收集与设计相关的所有细节（直径、长度、叶片角度……），用于构建两个原型：模型 A 和模型 B。结果：获得的结果在很大程度上接近，除了静压升高，差异很明显。结论：与已发表的其他研究相比，