公开(公告)号：US06394769B1

公开(公告)日：2002-05-28

申请号：US09602471

申请日：2000-06-23

申请人： Gill B. Bearnson ,  Pratap S. Khanwilkar ,  James W. Long ,  Jed C. Ludlow ,  Brad E. Paden ,  Chen Chen ,  Dave B. Paden ,  Don B. Olsen ,  James Antaki ,  Paul E. Allaire ,  Michael Baloh

发明人： Gill B. Bearnson ,  Pratap S. Khanwilkar ,  James W. Long ,  Jed C. Ludlow ,  Brad E. Paden ,  Chen Chen ,  Dave B. Paden ,  Don B. Olsen ,  James Antaki ,  Paul E. Allaire ,  Michael Baloh

IPC分类号： F04B1700

CPC分类号： F04D29/048 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/1086 ,  A61M1/12 ,  A61M1/122 ,  F04D13/0633 ,  F04D13/064 ,  F04D13/0646 ,  F05B2200/23 ,  F05B2240/515 ,  F16C32/0423 ,  F16C32/0476 ,  F16C2316/18 ,  F16C2360/44 ,  Y10S415/90

摘要： An inventive blood pump in accordance with this invention includes a housing that has inlet and outlet ports for receiving and discharging blood. A rotor is positioned in the housing's interior for pumping blood between the housing's inlet and outlet ports, with the rotor being capable of motion in three translational and three rotational axes. An assembly for magnetically suspending and rotating the rotor in a contact-free manner with respect to the housing includes only one electromagnetic bearing that actively controls motion of the rotor with respect to one axis selected from the rotor's three translational and three rotational axes, an electromagnetic motor that actively drives motion of the rotor with respect to one of its three rotational axes, and magnetic bearings for passively controlling motion of the rotor with respect to the remaining four of its translational and rotational axes. The inventive blood pump can also be incorporated into an artificial heart.

摘要翻译： 根据本发明的创新血泵包括具有用于接收和排出血液的入口和出口的壳体。 转子定位在壳体的内部，用于在壳体的入口和出口之间泵送血液，转子能够以三个平移和三个旋转轴线运动。 用于相对于壳体以无接触方式磁性地悬挂和旋转转子的组件仅包括一个电磁轴承，其主动地控制转子相对于从转子的三个平移和三个旋转轴中选择的一个轴的运动，电磁 主动驱动转子相对于其三个旋转轴中的一个运动的电机，以及用于被动地控制转子相对于其平移轴和旋转轴的剩余四个运动的磁轴承。 本发明的血液泵还可以并入人造心脏。

公开(公告)号：US07462019B1

公开(公告)日：2008-12-09

申请号：US09673922

申请日：1999-04-22

申请人： Paul E. Allarie ,  Gill B. Bearnson ,  Ron Flack ,  Pratap S. Khanwilkar ,  B. Ajit Kumar ,  James W. Long, Jr. ,  Don B. Olsen ,  Jeffrey Decker ,  Michael Baloh

发明人： Paul E. Allarie ,  Gill B. Bearnson ,  Ron Flack ,  Pratap S. Khanwilkar ,  B. Ajit Kumar ,  James W. Long, Jr. ,  Don B. Olsen ,  Jeffrey Decker ,  Michael Baloh

IPC分类号： F04B17/03 ,  A61M1/10

CPC分类号： A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1031 ,  A61M1/12 ,  A61M1/122 ,  F04D13/0666 ,  F04D29/048 ,  F05B2200/23 ,  F16C32/0448 ,  F16C2316/18 ,  F16C2360/44

摘要： A pump for pumping sensitive fluids, such as blood, having no mechanical contact between the impeller and any other structure. The pump comprises a pump housing, an impeller disposed within the pump housing, a magnetic bearing system for supporting and stabilizing the impeller in five degrees of freedom, and a conformally shaped magnetically linked motor for rotating the impeller. The magnetic bearing system and motor advantageously comprise electromagnets and permanent magnets for stability and control of the impeller, and to reduce size, weight, and pump power consumption. Permanent and electromagnets are disposed on the pump housing and permanent magnets are disposed on the impeller such that by controlling electric current through the electromagnets on the housing, the magnetically suspended impeller functions as the rotor, and the housing as the stator of a D.C. motor. The system advantageously allows for sensing of relative impeller position and dynamic properties without the need for additional sensors. The fluid inlet, pump impeller, housing, and other components are configured such that flow patterns are as smooth and laminar as possible to reduce damage to the fluid, and such that eddies, flow separation, and re-circulation are reduced. In various embodiments, the pump is suitable for short or long-term implantation as a ventricular assist device or as a complete replacement heart in a human patient.

摘要翻译： 用于泵送诸如血液的敏感流体的泵，其在叶轮和任何其它结构之间没有机械接触。 泵包括泵壳体，设置在泵壳体内的叶轮，用于以五个自由度支撑和稳定叶轮的磁轴承系统，以及用于旋转叶轮的共形形状的磁连接马达。 磁轴承系统和电动机有利地包括用于叶轮的稳定和控制的电磁体和永磁体，并且减小尺寸，重量和泵的功率消耗。 永久和电磁铁设置在泵壳体上，并且永久磁铁设置在叶轮上，使得通过控制通过壳体上的电磁体的电流，磁悬浮叶轮用作转子，并且壳体用作直流电动机的定子。 该系统有利地允许感测相对叶轮位置和动态特性，而不需要额外的传感器。 流体入口，泵叶轮，壳体和其它部件被构造成使得流动模式尽可能平滑和层流以减少对流体的损害，并且减小涡流，流动分离和再循环。 在各种实施例中，泵适合于作为心室辅助装置的短期或长期植入或者作为人类患者中的完全置换心脏。