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    Impeller of cardiac assist device, and cardiac assist device
    76.
    发明授权
    Impeller of cardiac assist device, and cardiac assist device 有权

    公开(公告)号：US12011580B1

    公开(公告)日：2024-06-18

    申请号：US18575816

    申请日：2022-07-07

    申请人： SHANGHAI PHIGINE MEDICAL CO. LTD

    发明人： Yuncong Yang ,  Xi Liu ,  Haishan Wang ,  Qifeng Yu

    IPC分类号： A61M60/408 ,  A61M60/122 ,  A61M60/216 ,  A61M60/221 ,  A61M60/237 ,  A61M60/438 ,  A61M60/806

    CPC分类号： A61M60/216 ,  A61M60/122 ,  A61M60/438 ,  A61M60/806

    摘要： The present disclosure discloses an impeller of a cardiac assist device, and the cardiac assist device. The impeller of the cardiac assist device includes an impeller shaft and a plurality of blades; a shape of the plurality of blades is set such that: blade cascades of the plurality of blades are of arc lines that recess towards a same side, and the blade cascade is a planar unfolding shape of an intersection line where a cylindrical surface intersects with the blade. In the present disclosure, a traditional wing-shaped blade cascade is changed, the blade cascades are of arc lines that recess towards the same side, this design enables blood to pass through the impeller at a smaller inflow angle and a greater outflow angle, the smaller inflow angle may generate a greater lift, so that the impeller obtains a greater output power, and meanwhile, a rotational flow can be prevented from being generated at an inflow port, such that the blood stably flows into the impeller. The greater outflow angle can convert the rotation energy of the blood at an outflow port into an axial kinetic energy, thereby obtaining a greater axial speed, and improving the efficiency of the impeller.