Development of a Compact Maglev Centrifugal Blood Pump Enclosed in a Titanium Housing
Development of a Compact Maglev Centrifugal Blood Pump Enclosed in a Titanium Housing
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钛外壳内紧凑型磁悬浮离心血泵的开发
DOI：
10.1299/jamdsm.2.343
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发表时间：
2008
影响因子：
0.9
通讯作者：
A. Shimokohbe
中科院分区：
文献类型：
--
作者：
C. Pai;T. Shinshi;J. Asama;S. Takatani;A. Shimokohbe
一种紧凑型离心血泵，包括一个受控的两个自由度的径向磁轴承和一个无刷直流电机封闭在一个钛外壳已被开发用作植入式心室辅助装置。磁轴承还通过磁耦合器支持叶轮的轴向和角向运动。顶部外壳由纯钛制成，而叶轮和定子分别涂有纯钛和Ti-6Al-7 Nb，以提高泵的生物相容性。选择纯钛和钛合金的组合是因为涡流型位移传感器通过介入导电壁的灵敏度。泵的尺寸为直径69.0 mm，高度28.5 mm。在泵性能测试期间，由于液压力导致的叶轮的轴向移位导致旋转定位信号的变化，从而导致对旋转速度的失控。通过调节旋转定位信号解决了这个问题。当流量为5 l/min，压头为100 mmHg时，泵的功耗和效率分别为5.5 W和20%。此外，与市售泵相比，血泵的溶血率低43.6%。
A compact centrifugal blood pump consisting of a controlled two-degrees-of-freedom radial magnetic bearing and a brushless DC motor enclosed in a titanium housing has been developed for use as an implantable ventricular assist device. The magnetic bearing also supports axial and angular motions of the impeller via a magnetic coupling. The top housing is made of pure titanium, while the impeller and the stator are coated with pure titanium and Ti-6Al-7Nb, respectively, to improve the biocompatibility of the pump. The combination of pure titanium and titanium alloy was chosen because of the sensitivity of eddy current type displacement sensors through the intervening conducting wall. The dimensions of the pump are 69.0 mm in diameter and 28.5 mm in height. During a pump performance test, axial shifting of the impeller due to hydraulic forces led to variations in the rotational positioning signal, causing loss of control of the rotational speed. This problem was solved by conditioning the rotational positioning signal. With a flow rate of 5 l/min against a head pressure of 100 mmHg, the power consumption and efficiency of the pump were 5.5 W and 20%, respectively. Furthermore, the hemolysis of the blood pump was 43.6% lower when compared to that of a commercially available pump.
一种紧凑型磁悬浮叶轮高效低溶血离心血泵
DOI：
--
发表时间：
2006
期刊：
Artificial Organs 30(3)
影响因子：
--
作者：
Asama J;Shinshi T;Hoshi H;Takatani S;Shimokohbe A
通讯作者：
Shimokohbe A
磁悬浮转子紧凑型离心血泵的新设计
DOI：
--
发表时间：
2004
期刊：
ASAIO 50,6
影响因子：
--
作者：
J.Asama;T.Shinshi;H.Hoshi;S.Takatani;Akira Shimokohbe
通讯作者：
Akira Shimokohbe