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叶轮式血液泵LAP-Ⅰ采用了航空叶轮机械中使用的设计思想方法,该装置是针对亚洲患者的临床应用而设计.综合航空叶轮机械技术和医学需求,采用整体转子和悬臂静子结构设计,并对其串列叶栅静子结构做了进一步的优化改进,得到叶轮式血液泵LAP-Ⅱ.计算流体动力学(CFD)模拟结果表明,血泵LAP-Ⅱ的压升性能达到医学需求,泵体内流动状况顺畅.最大比较剪切应力(S)值得到明显降低,流线显示血液通过泵体的最长时间得到减小,抗溶血应用性能得到提高.
The impeller-based blood pump LAP-I incorporates a design methodology used in aeronautical impeller machines designed for clinical use in Asian patients. The integrated rotor and cantilever stator structure design is based on a combination of aeromechanical and medical needs The cascade structure of cascades was further optimized and improved to obtain the impeller-type blood pump LAP-II.The computational fluid dynamics (CFD) simulation results show that the blood pressure pump LAP-Ⅱ’s pressure-rising performance meets the medical needs, The flow conditions were smooth, the maximum comparative shear stress (S) value was significantly reduced, and the streamline showed that the longest time for blood to pass through the pump body was reduced and the anti-hemolysis application performance was improved.