公开(公告)号：US06589031B2

公开(公告)日：2003-07-08

申请号：US09952086

申请日：2001-09-13

申请人： Hiroyuki Maeda ,  Masafumi Sato ,  Kenji Araki ,  Hirofumi Anai

发明人： Hiroyuki Maeda ,  Masafumi Sato ,  Kenji Araki ,  Hirofumi Anai

IPC分类号： F04B1700

CPC分类号： F04D29/0467 ,  A61M1/10 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1036 ,  F04D13/026 ,  F04D13/027

摘要： A turbo blood pump includes a housing 1 having a pump chamber 2, an inlet port 3, and an outlet port 4, an impeller 5 disposed rotatably in the pump chamber, an upper bearing 9 and a lower bearing 10 supporting the impeller rotatably, and a driving force transmitting unit for driving the impeller to rotate. The upper bearing is supported at a position in the pump chamber below the inlet port, so that a cross-sectional area of the pump chamber in a plane including an upper end of the upper bearing and being orthogonal to a shaft of the impeller is larger than a cross-sectional area of a flow path of the inlet port at a portion where the inlet port is coupled to the pump chamber, and thus obstruction with respect to blood flow by the upper bearing is of such a degree as to be permissible from a practical viewpoint, while an impeller is supported by upper and lower bearings. Thereby, the pump is less likely to cause problems of blood stagnation and thrombus formation.

公开(公告)号：US06824358B2

公开(公告)日：2004-11-30

申请号：US10294478

申请日：2002-11-13

申请人： Kenji Araki ,  Hirofumi Anai ,  Hiroyuki Maeda ,  Masafumi Sato

发明人： Kenji Araki ,  Hirofumi Anai ,  Hiroyuki Maeda ,  Masafumi Sato

IPC分类号： F01D102

CPC分类号： F04D29/242 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1036 ,  F01D1/02 ,  F04D29/183

摘要： A turbo blood pump having a small size, that is, a small amount of blood to be filled and capable of adjusting and maintaining the slight amount of flow, and a turbo blood pump in which hemolysis is not likely to occur even if it is used at a practically high rotational speed necessary to obtain a predetermined discharging ability. The turbo blood pump to be used includes a housing having an inlet port and an outlet port; and an impeller disposed rotatably in the housing; wherein the impeller includes at least a rotation shaft and an annular connection portion to which the plural vanes are attached. The vane is manufactured so that an inlet side part is in the skew position with respect to an outlet side part.

摘要翻译： 具有小尺寸的涡轮血泵，即少量待注射的血液，并且能够调节和保持微量的流量;以及即使使用溶血也不可能发生溶血的涡轮血泵 在实际高转速下获得预定的排放能力。 所使用的涡轮血泵包括具有入口和出口的壳体; 以及可旋转地设置在所述壳体中的叶轮; 其中所述叶轮至少包括旋转轴和连接有所述多个叶片的环形连接部。 制造叶片使得入口侧部分相对于出口侧部分处于歪斜位置。

公开(公告)号：US06722863B2

公开(公告)日：2004-04-20

申请号：US09952240

申请日：2001-09-10

申请人： Hiroyuki Maeda ,  Masafumi Sato ,  Kenji Araki ,  Hirofumi Anai

发明人： Hiroyuki Maeda ,  Masafumi Sato ,  Kenji Araki ,  Hirofumi Anai

IPC分类号： F04B1700

CPC分类号： F04D13/027 ,  A61M1/10 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1036 ,  F04D13/026

摘要： A turbo blood pump includes a housing 1 having a pump chamber 2, an inlet port 3, and an outlet port 4, an impeller 5 disposed rotatably in the pump chamber, an upper bearing 9 and a lower bearing 10 supporting the impeller rotatably, and a driving force transmitting unit for driving the impeller to rotate. The upper bearing is supported at a position in the pump chamber below the inlet port, so that a cross-sectional area of the pump chamber in a plane including an upper end of the upper bearing and being orthogonal to a shaft of the impeller is larger than a cross-sectional area of a flow path of the inlet port at a portion where the inlet port is coupled to the pump chamber, and thus obstruction with respect to blood flow by the upper bearing is of such a degree as to be permissible from a practical viewpoint, while an impeller is supported by upper and lower bearings. Thereby, the pump is less likely to cause problems of blood stagnation and thrombus formation.

摘要翻译： 涡轮血泵包括具有泵室2，入口3和出口4的壳体1，可旋转地设置在泵室中的叶轮5，可旋转地支撑叶轮的上轴承9和下轴承10，以及 用于驱动叶轮旋转的驱动力传递单元。 上轴承支撑在泵室的入口下方的位置处，使得泵室在包括上轴承的上端并且与叶轮的轴正交的平面中的横截面面积较大 比入口端口联接到泵室的部分处的入口的流动通道的横截面面积大，因此相对于上轴承的血液流动阻塞的程度可以允许从 一个实用的观点，而叶轮由上下轴承支撑。 因此，泵不太可能引起血液滞留和血栓形成的问题。