永磁磁浮技术在叶轮式人工心脏的应用  

Toward a Permanent Maglev Artificial Heart

作　　者：钱坤喜[1] 曾培[1] 茹伟民[1] 袁海宇[1] 

机构地区：[1]江苏大学医学工程所,镇江212013

出　　处：《机械设计与研究》2002年第2期57-58,共2页Machine Design And Research

基　　金：国家自然科学基金资助项目 (3 9970 73 6

摘　　要：将永磁力跟非磁力相结合实现永磁磁浮 ,研制出永磁磁浮叶轮血泵的样机。当电机转速逐渐增加到4 0 0 0r/min以上时 ,转子在液动力的作用下从接触点与定子相脱离 ,实现完全悬浮。压力和流量之间的关系曲线显示血泵的内部没有机械摩擦和湍流。与采用机械轴承的血泵相比 ,采用永磁磁浮技术的血泵不仅效率高 ,寿命长 ,而且不会产生溶血和血栓。The author discovered that stable levitation is achievable by combination of permanent magnetic and nonmagnetic forces.A prototype design of hybrid permanent maglev impeller pump has been developed.As the rotating speed increases gradually to higher than 4000RPM,the rotor will be drawn off by hydrodynamic force of the fluid from the contact point.Then the rotor will be fully suspended.The relation between pressure head and flow rate indicates that there is neither mechanical friction nor hydrodynamic turbulence inside the pump;the former is due to the maglev and the latter is a result of streamlined design of the impeller.

关 键 词：叶轮式人工心脏 人造心脏泵 永磁磁浮技术 耐久性 

分 类 号：R318.11[医药卫生—生物医学工程]