Yamane T, Nishida M, Kijima T, Maekawa J
Mechanical Engineering Laboratory, Tsukuba, Japan.
Artif Organs. 1997 Jul;21(7):620-4. doi: 10.1111/j.1525-1594.1997.tb03710.x.
Size reduction of the monopivot magnetic suspension blood pump has been achieved by reducing the size of the magnetic suspension and employing a direct drive mechanism in place of a brushless DC motor and a magnetic coupling. The flow has also been improved using a closed hollow impeller to remove flow obstruction at the inlet and using radial straight vanes to reduce the impeller speed by 30%. Hemolysis testing was conducted for the new models. Results showed that model DD1 presented only a slightly higher level of hemolysis than a regular extracorporeal centrifugal pump.
通过减小磁悬浮的尺寸，并采用直接驱动机制取代无刷直流电机和磁耦合，实现了单枢轴磁悬浮血泵的尺寸减小。还通过使用封闭式空心叶轮消除入口处的流动障碍，并使用径向直叶片将叶轮速度降低30%来改善流量。对新模型进行了溶血测试。结果表明，DD1模型的溶血水平仅略高于普通体外离心泵。
