Design of a small centrifugal blood pump with magnetic bearings.
Design of a small centrifugal blood pump with magnetic bearings.
复制标题
带磁力轴承的小型离心血泵的设计。
DOI：
10.1111/j.1525-1594.2009.00883.x
复制
发表时间：
2009
影响因子：
2.4
通讯作者：
Walton,JamesF
中科院分区：
文献类型：
--
作者：
Jahanmir,Said;Hunsberger,AndrewZ;Ren,Zhaohui;Heshmat,Hooshang;Heshmat,Crystal;Tomaszewski,MichaelJ;Walton,JamesF
设计具有磁悬浮转子的血泵需要严格评估磁轴承和电机的要求，分析转子的动力学和水力性能，并注意溶血和血栓形成的可能性。考虑到所需的几何尺寸、所需的运行速度、主流和洗流区域的流量以及磁承载性能，在几种设计方法中选择了一种用于新原型。根据估计的运行速度和转子与定子之间的间隙，估计电机的特性和尺寸。计算电机刚度值，并将其与流体运动引起的液压载荷一起使用，以确定轴向和径向磁力轴承的最佳设计。利用有限元转子动力学分析验证了左室辅助装置样机的径向和轴向稳定性。分析表明，转子可以完全悬浮并旋转到所需的工作速度，且功率损失小，无机械接触。在体外实验中，采用模拟环路测试装置对新型血泵样机的性能进行了评估。
Design of a blood pump with a magnetically levitated rotor requires rigorous evaluation of the magnetic bearing and motor requirements and analysis of rotor dynamics and hydraulic performance with attention to hemolysis and thrombosis potential. Given the desired geometric dimensions, the required operating speed, flow in both the main and wash flow regions, and magnetic bearing performance, one of several design approaches was selected for a new prototype. Based on the estimated operating speed and clearance between the rotor and stator, the motor characteristics and dimensions were estimated. The motor stiffness values were calculated and used along with the hydraulic loading due to the fluid motion to determine the best design for the axial and radial magnetic bearings. Radial and axial stability of the left ventricular assist device prototype was verified using finite element rotor dynamic analysis. The analysis indicated that the rotor could be completely levitated and spun to the desired operating speed with low power loss and no mechanical contact. In vitro experiments with a mock loop test setup were performed to evaluate the performance of the new blood pump prototype.
氨基酸：生物合成和遗传调控
DOI：
--
发表时间：
1983
期刊：
影响因子：
--
作者：
K. Herrmann;R. Somerville
通讯作者：
R. Somerville