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    Blood pump
    3.
    发明授权
    Blood pump 失效
    血泵

    公开(公告)号：US5399145A

    公开(公告)日：1995-03-21

    申请号：US108251

    申请日：1993-08-19

    申请人： Kazuyuki Ito ,  Michiharu Nakao ,  Takeshi Aizawa ,  Yukihiko Nose

    发明人： Kazuyuki Ito ,  Michiharu Nakao ,  Takeshi Aizawa ,  Yukihiko Nose

    IPC分类号： A61M1/10 ,  F04D29/12 ,  F04D7/02

    CPC分类号： F04D29/128 ,  A61M1/101 ,  A61M1/102 ,  A61M1/1025 ,  A61M1/1036

    摘要： A novel cardiac assist blood pump is disclosed. The blood pump comprises a pump chamber, a pressurizing chamber provided adjacent to the pump chamber, a rotor chamber provided adjacent to the pressurizing chamber and an impelled positioned in the pump chamber, said pump being characterized in that the rotation shaft of the impeller means is provided with a first seal member having a skirt portion which is made of an elastomeric material and extends downward to cover the clearance between the rotation shaft and the first rotation shaft hole provided between the pump chamber and the pressurizing chamber and a second seal member similar to the first one which covers the clearance between the rotation shaft and the second rotation shaft hole provided between the pressurizing chamber and the rotor chamber; and tile pressurizing liquid is forced into the pressurizing chamber. The pressurizing liquid penetrates into the pump chamber through the clearance between the rotation shaft and the rotation shaft hole and lifts the skirt portion of the first seal member and the friction between the seal member and tile bottom of the pump chamber is prevented. Also the pressurizing liquid presses the skirt portion of the second seal member and thus prevents leakage of tile pressurizing liquid into the rotor chamber.

    摘要翻译： 公开了一种新型的心脏辅助血液泵。 所述血泵包括泵室，邻近所述泵室设置的加压室，邻近所述加压室设置并且被推进定位在所述泵室中的转子室，所述泵的特征在于，所述叶轮装置的旋转轴是 设置有第一密封构件，所述第一密封构件具有由弹性体材料制成并且向下延伸以覆盖设置在泵室和加压室之间的旋转轴和第一旋转轴孔之间的间隙的裙部的第一密封构件和类似于 第一个覆盖设置在加压室和转子室之间的旋转轴和第二旋转轴孔之间的间隙; 并且瓦片加压液体被迫进入加压室。 加压液体通过旋转轴和旋转轴孔之间的间隙进入泵室，并且提升第一密封构件的裙部，并且防止了密封构件与泵室的瓦片底部之间的摩擦。 此外，加压液体也压迫第二密封部件的裙部，从而防止瓦片加压液体泄漏到转子室中。