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    CAVOPULMONARY VISCOUS IMPELLER ASSIST DEVICE AND METHOD
    2.
    发明申请
    CAVOPULMONARY VISCOUS IMPELLER ASSIST DEVICE AND METHOD 审中-公开

    公开(公告)号：US20180256794A1

    公开(公告)日：2018-09-13

    申请号：US15816188

    申请日：2017-11-17

    Applicant: Indiana University Research and Technology Corporation

    Inventor： Mark D. Rodefeld

    IPC: A61M1/10 ,  A61M1/12

    Abstract: A bearingless and sealless rotary blood pump is disclosed which provides multidirectional flow intended to provide low-pressure, high-volume right-sided partial assist circulatory support in a univentricular Fontan circulation on a permanent basis. The pump includes a housing and an impeller suspended in the center of the housing. The housing incorporates flow optimization features between inlet and outlet ends, as well as with the impeller surface. Large fluid gaps maintained between impeller and housing eliminate any potential for blood flow obstruction. The impeller contains some motor components. It includes a central stator and surrounding rotor. The motor includes a brushless DC outrunner electrical motor design. An electromagnetic stator core is surrounded by a circumferential passive magnetic ring. The rotor is further levitated about the stator spindle by a plurality of axially and radially located passive magnetic and hydrodynamic journal bearings on both ends of the spindle. The rotor is bearingless and sealless. During impeller rotation, blood entering the space between the rotor and stator is induced to flow by centrifugal pumping action and the fluid film separates the stator hydrodynamic bearings from the rotor so that there is no direct mechanical contact between the rotor and stator.

    Cavopulmonary viscous impeller assist device and method
    3.
    发明授权
    Cavopulmonary viscous impeller assist device and method 有权

    公开(公告)号：US10744245B2

    公开(公告)日：2020-08-18

    申请号：US15816188

    申请日：2017-11-17

    Applicant: Indiana University Research and Technology Corporation

    Inventor： Mark D. Rodefeld

    IPC: A61M1/10 ,  A61M1/12

    Abstract: A bearingless and sealless rotary blood pump is disclosed which provides multidirectional flow intended to provide low-pressure, high-volume right-sided partial assist circulatory support in a univentricular Fontan circulation on a permanent basis. The pump includes a housing and an impeller suspended in the center of the housing. The housing incorporates flow optimization features between inlet and outlet ends, as well as with the impeller surface. Large fluid gaps maintained between impeller and housing eliminate any potential for blood flow obstruction. The impeller contains some motor components. It includes a central stator and surrounding rotor. The motor includes a brushless DC outrunner electrical motor design. An electromagnetic stator core is surrounded by a circumferential passive magnetic ring. The rotor is further levitated about the stator spindle by a plurality of axially and radially located passive magnetic and hydrodynamic journal bearings on both ends of the spindle. The rotor is bearingless and sealless. During impeller rotation, blood entering the space between the rotor and stator is induced to flow by centrifugal pumping action and the fluid film separates the stator hydrodynamic bearings from the rotor so that there is no direct mechanical contact between the rotor and stator.

    Cavopulmonary viscous impeller assist device and method
    4.
    发明授权
    Cavopulmonary viscous impeller assist device and method 有权

    公开(公告)号：US09827357B2

    公开(公告)日：2017-11-28

    申请号：US14362452

    申请日：2012-12-03

    Applicant: Indiana University Research and Technology Corporation

    Inventor： Mark D. Rodefeld

    IPC: A61M1/10 ,  A61M1/12

    CPC classification number: A61M1/1036 ,  A61M1/1008 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1029 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/122 ,  A61M1/125 ,  A61M1/127

    Abstract: A bearingless and sealless rotary blood pump is disclosed which provides multidirectional flow intended to provide low-pressure, high-volume right-sided partial assist circulatory support in a univentricular Fontan circulation on a permanent basis. The pump includes a housing and an impeller suspended in the center of the housing. The housing incorporates flow optimization features between inlet and outlet ends, as well as with the impeller surface. Large fluid gaps maintained between impeller and housing eliminate any potential for blood flow obstruction. The impeller contains some motor components. It includes a central stator and surrounding rotor. The motor includes a brushless DC outrunner electrical motor design. An electromagnetic stator core is surrounded by a circumferential passive magnetic ring. The rotor is further levitated about the stator spindle by a plurality of axially and radially located passive magnetic and hydrodynamic journal bearings on both ends of the spindle. The rotor is bearingless and sealless. During impeller rotation, blood entering the space between the rotor and stator is induced to flow by centrifugal pumping action and the fluid film separates the stator hydrodynamic bearings from the rotor so that there is no direct mechanical contact between the rotor and stator.

    CAVOPULMONARY VISCOUS IMPELLER ASSIST DEVICE AND METHOD
    5.
    发明申请
    CAVOPULMONARY VISCOUS IMPELLER ASSIST DEVICE AND METHOD 有权
    CAVOPULMONARY VISCOUS叶轮辅助装置和方法

    公开(公告)号：US20140336446A1

    公开(公告)日：2014-11-13

    申请号：US14362452

    申请日：2012-12-03

    Applicant: Indiana University Research and Technology Corporation

    Inventor： Mark D. Rodefeld

    IPC: A61M1/10 ,  A61M1/12

    CPC classification number: A61M1/1036 ,  A61M1/1008 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1029 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/122 ,  A61M1/125 ,  A61M1/127

    Abstract: A bearingless and sealless rotary blood pump is disclosed which provides multidirectional flow intended to provide low-pressure, high-volume right-sided partial assist circulatory support in a univentricular Fontan circulation on a permanent basis. The pump includes a housing and an impeller suspended in the center of the housing. The housing incorporates flow optimization features between inlet and outlet ends, as well as with the impeller surface. Large fluid gaps maintained between impeller and housing eliminate any potential for blood flow obstruction. The impeller contains some motor components. It includes a central stator and surrounding rotor. The motor includes a brushless DC outrunner electrical motor design. An electromagnetic stator core is surrounded by a circumferential passive magnetic ring. The rotor is further levitated about the stator spindle by a plurality of axially and radially located passive magnetic and hydrodynamic journal bearings on both ends of the spindle. The rotor is bearingless and sealless. During impeller rotation, blood entering the space between the rotor and stator is induced to flow by centrifugal pumping action and the fluid film separates the stator hydrodynamic bearings from the rotor so that there is no direct mechanical contact between the rotor and stator.

    Abstract translation: 公开了一种无轴承和无密封的旋转血泵，其提供多向流，其旨在在永久性的单心室Fontan循环中提供低压，高容量的右侧部分辅助循环支持。 泵包括壳体和悬挂在壳体中心的叶轮。 外壳采用入口端和出口端之间的流动优化特征以及叶轮表面。 叶轮和壳体之间保持的大的流体间隙消除了血液阻塞的任何潜力。 叶轮包含一些电机部件。 它包括一个中心定子和周围的转子。 电机包括无刷直流超越电动机设计。 电磁定子铁芯被周向无源磁环包围。 通过在主轴的两端上的多个轴向和径向定位的被动磁力和流体动力轴颈轴承，转子进一步悬浮在定子心轴附近。 转子无轴承和无缝。 在叶轮旋转期间，进入转子和定子之间的空间的血液被诱导通过离心泵送作用流动，流体膜将定子流体动力轴承与转子分离，使得转子和定子之间不存在直接的机械接触。

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