公开(公告)号：US20050287022A1

公开(公告)日：2005-12-29

申请号：US11087851

申请日：2005-03-24

Applicant: Mitsutoshi Yaegashi ,  Takehiko Asada ,  Takehisa Mori ,  Takayoshi Ozaki ,  Kenichi Suzuki

Inventor： Mitsutoshi Yaegashi ,  Takehiko Asada ,  Takehisa Mori ,  Takayoshi Ozaki ,  Kenichi Suzuki

IPC: A61M1/10 ,  F04B17/00 ,  F04B35/04 ,  F04D15/00 ,  F04D29/04 ,  F04D29/047

CPC classification number: F04D29/047 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  F04D13/027 ,  F04D13/0666 ,  F04D15/0088

Abstract: A blood pump apparatus comprises a housing, a centrifugal pump section including an impeller and rotating inside the housing to feed a fluid by a centrifugal force, an impeller rotational torque generation section for attracting thereto said impeller and rotating said impeller; and a plurality of grooves for hydrodynamic bearing provided on an inner surface of said housing at a side of said impeller rotational torque generation section, each of the grooves for hydrodynamic bearing having a first side and a second side both extending from a periphery of said portion in which a groove for hydrodynamic bearing is formed toward a central side thereof and opposed to each other, a third side connecting one end of said first side and one end of said second side to each other, and a fourth side connecting said other end of said first side and said other end of said second side to each other; said first side and said second side are formed as a circular arc respectively in such a way that centers of said circular arcs are different from each other.

Abstract translation: 一种血泵装置，包括壳体，包括叶轮的离心泵部分，并且在所述壳体内旋转以通过离心力供给流体;叶轮旋转扭矩产生部，用于吸引所述叶轮并旋转所述叶轮; 以及多个用于流体动力轴承的槽，设置在所述壳体的位于所述叶轮旋转转矩产生部分侧的内表面上，每个用于流体动力轴承的槽具有第一侧和第二侧，两个槽从所述部分的周边延伸 其中用于流体动力轴承的槽形成为朝向其中心侧并且彼此相对的第三侧，第三侧将所述第一侧的一端和所述第二侧的一端彼此连接，第四侧将所述第二侧的另一端 所述第一侧和所述第二侧的另一端彼此相对; 所述第一侧和所述第二侧分别形成为圆弧，使得所述圆弧的中心彼此不同。

公开(公告)号：US20050095151A1

公开(公告)日：2005-05-05

申请号：US10937109

申请日：2004-09-09

Applicant: Richard Wampler ,  David Lancisi

Inventor： Richard Wampler ,  David Lancisi

IPC: F04F99/00 ,  A61M1/10 ,  F04B17/00 ,  F04B17/03 ,  F04B35/04

CPC classification number: A61M1/1036 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/122 ,  F04D1/00 ,  F04D13/06 ,  F04D13/0666 ,  F04D29/0413 ,  F04D29/043 ,  F04D29/047 ,  F04D29/0473 ,  F04D29/048 ,  F04D29/22 ,  F04D29/426 ,  F04D29/628 ,  F16C32/044 ,  F16C2316/18 ,  Y10S415/90

Abstract: Various “contactless” bearing mechanisms including hydrodynamic, hydrostatic, and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. These design features may be combined. In one embodiment, a pump housing has a spindle extending from a wall of the pump housing into a pumping chamber defined by the pump housing. The spindle has a stepped portion adjacent the wall. In one embodiment, the stepped portion is defined by a change in spindle diameter. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.

Abstract translation: 提供了用于旋转泵的各种“非接触”轴承机构，包括流体动力学，静液压和磁性轴承，作为机械接触轴承的替代品。 这些设计特征可以组合。 在一个实施例中，泵壳体具有从泵壳体的壁延伸到由泵壳体限定的泵送室中的心轴。 主轴具有邻近壁的台阶部分。 在一个实施例中，阶梯部分由主轴直径的变化限定。 缺少机械接触轴承可以延长泵的运行寿命，减少对血液等工作流体的损坏。

公开(公告)号：US06824358B2

公开(公告)日：2004-11-30

申请号：US10294478

申请日：2002-11-13

Applicant: Kenji Araki ,  Hirofumi Anai ,  Hiroyuki Maeda ,  Masafumi Sato

Inventor： Kenji Araki ,  Hirofumi Anai ,  Hiroyuki Maeda ,  Masafumi Sato

IPC: F01D102

CPC classification number: F04D29/242 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1036 ,  F01D1/02 ,  F04D29/183

Abstract: 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.

Abstract translation: 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

Applicant: Hiroyuki Maeda ,  Masafumi Sato ,  Kenji Araki ,  Hirofumi Anai

Inventor： Hiroyuki Maeda ,  Masafumi Sato ,  Kenji Araki ,  Hirofumi Anai

IPC: F04B1700

CPC classification number: F04D13/027 ,  A61M1/10 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1036 ,  F04D13/026

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20030233021A1

公开(公告)日：2003-12-18

申请号：US10171094

申请日：2002-06-12

Applicant: Miwatec Incorporated ,  Baylor College of Medicine

Inventor： Yukihiko Nose ,  Seiji Ichikawa ,  Toshiyuki Shinohara

IPC: A61M001/00

CPC classification number: A61M1/1017 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1036 ,  A61M1/122

Abstract: It is an object of the present invention to realize a small and light blood pump that can control thrombosis and moreover, endure a prolonged use. A blood pump comprising an impeller, a casing having a suction inlet and a delivery outlet and rotatably encasing the impeller, a magnetic drive means for rotating the impeller by magnetically acting from outside of the casing on a magnet that the impeller includes, a magnetic attraction force adjustment means for adjusting the attraction force by said magnetic action, a control means for rotating speed of said magnetic drive means, and a pair of pivot bearings for supporting pivots at both ends of the impeller rotation shaft, wherein the distance between bearing faces of said both pivot bearings is set longer than the length of the rotation shaft of the impeller and the rotation speed of the impeller is controlled to a predetermined speed by said control means for rotating speed so as to levitate the impeller in the blood flow in the casing and to maintain out of contact between the pivots at both ends of the rotation shaft of the impeller and the bearing face of said both pivot bearing.

Abstract translation: 本发明的目的是实现能够控制血栓形成的小而轻的血液泵，并且延长使用寿命。 一种血泵，包括叶轮，具有吸入口和输出出口并且可旋转地包围叶轮的壳体;磁驱动装置，用于通过从壳体外部的磁力作用将叶轮旋转到叶轮包括的磁体上，磁吸引力 用于通过所述磁作用调节吸引力的力调节装置，用于使所述磁驱动装置转速的控制装置和用于在所述叶轮旋转轴的两端支撑枢轴的一对枢转轴承，其中， 所述两个枢转轴承设定得比叶轮的旋转轴的长度长，并且通过所述控制装置将叶轮的旋转速度控制到预定的速度，以使得在壳体中的血流中的叶轮悬浮 并且保持在叶轮的旋转轴的两端的枢轴与所述两个枢转轴的轴承面之间的接触 ng。

公开(公告)号：US20030147754A1

公开(公告)日：2003-08-07

申请号：US10220357

申请日：2003-01-17

Inventor： Sebastian Schulte Eistrup ,  Catrin Bludszuweit

IPC: F04B049/00

CPC classification number: F04D29/048 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/1022 ,  A61M1/1036 ,  A61M1/122 ,  A61M1/3663 ,  F04D3/00 ,  F04D13/0633 ,  F04D29/0467 ,  Y10S415/90

Abstract: The invention concerns a blood pump, in particular a ventricular cardiac support pump, with formed in a pump housing a blood chamber which is designed to hold a rotor rotatable about a rotor axis and at opposite ends in sections forms an inlet connectable with an inlet cannula, where an outlet from the blood chamber connectable with an outlet cannula extends in a direction perpendicular to the rotor axis, and where the rotor axis at its ends is mounted rotatably in mechanically active bearings provided in the area of the inlet concerned and connected with the pump housing.

Abstract translation: 本发明涉及一种血泵，特别是心室心脏支持泵，其形成在容纳血液室的泵中，该血液腔被设计成保持可围绕转子轴线旋转的转子，并且在相对端部分形成可与入口套管连接的入口 其中来自与出口套管连接的血液室的出口沿垂直于转子轴线的方向延伸，并且其端部处的转子轴线可旋转地安装在设置在相关入口区域中的机械活动轴承中，并且与 泵壳。

公开(公告)号：US20030105420A1

公开(公告)日：2003-06-05

申请号：US10016356

申请日：2001-12-05

Applicant: Spin Corporation

Inventor： Lloyd Hubbard ,  Earl Clausen

IPC: A61M037/00 ,  F04B049/00

CPC classification number: F04D13/14 ,  A61M1/10 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1036 ,  A61M1/3666 ,  Y10S415/90

Abstract: A two-chambered centrifugal blood pump for pumping biological fluids such as blood. One chamber is for pumping blood through the natural lungs, and a second chamber is for pumping blood through the remainder of the body. Each chamber has it's own inlet and outlet ports for attachment of tubing and cannulae. A small, adjustable clamp may alternatively be provided if minor adjustments of pressure to both the pulmonary and systemic circuits is required.

Abstract translation: 一种用于泵送生物液体如血液的双腔离心血泵。 一个室用于通过天然肺部抽血，第二个室用于通过身体的其余部分抽血。 每个腔室都有自己的入口和出口，用于连接管道和套管。 如果需要对肺和系统回路的压力进行微调，则可以提供小的可调节的夹具。

公开(公告)号：US06454999B1

公开(公告)日：2002-09-24

申请号：US09430244

申请日：1999-10-29

Applicant: Mehrdad Farhangnia ,  Alex Leynov ,  Joseph Loeffler ,  Alec A. Piplani ,  Greg Potts ,  Christian Skieller

Inventor： Mehrdad Farhangnia ,  Alex Leynov ,  Joseph Loeffler ,  Alec A. Piplani ,  Greg Potts ,  Christian Skieller

IPC: A61M114

CPC classification number: F28F21/062 ,  A61M1/1006 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1025 ,  A61M1/1036 ,  A61M1/1625 ,  A61M1/1629 ,  A61M1/1698 ,  A61M1/262 ,  A61M1/267 ,  A61M2205/366 ,  Y10S261/28

Abstract: An integrated blood pump/oxygenator having a rotating hollow fiber bundle assembly that both oxygenates and pumps blood is provided that includes a plurality of partitions disposed within or about the fiber bundle assembly to lengthen the flow path of blood passing through the fiber bundle. Alternatively, or in addition, blood flow paths may be lengthened and oxygenation improved by providing internal recirculation paths within the pump/oxygenator, which also advantageously may be used to reduce blood trauma caused by stagnation nearing moving parts and heat build-up.

Abstract translation: 提供了一种具有旋转的中空纤维束组合的集成血液泵/充氧器，其包含含氧化物和泵血液，其包括设置在纤维束组件内或周围的多个隔板，以延长通过纤维束的血液的流动路径。 或者或另外，可以通过在泵/氧合器内提供内部再循环路径来延长血液流动路径并且改善氧合作用，其也可有利地用于减少由运动部件附近的滞留引起的血液创伤和积热。

公开(公告)号：US06368557B1

公开(公告)日：2002-04-09

申请号：US09223685

申请日：1998-12-30

Applicant: Alec A. Piplani ,  Anthony Makarewicz ,  Jean-Pierre Dueri ,  Thomas A. Afzal

Inventor： Alec A. Piplani ,  Anthony Makarewicz ,  Jean-Pierre Dueri ,  Thomas A. Afzal

IPC: A61M114

CPC classification number: A61M1/267 ,  A61M1/1006 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1025 ,  A61M1/1036 ,  A61M1/1625 ,  A61M1/1629 ,  A61M1/1698 ,  A61M1/262 ,  A61M2205/366

Abstract: Improvements to integrated blood pump/oxygenator having a rotating hollow fiber bundle assembly that both oxygenates and pumps blood are provided. A plurality of vanes arranged along a central shaft of the device increase pressure near the center of the fiber bundle to prevent microbubble generation and blood trauma. Shearing loads imposed on the fiber elements of the fiber bundle are reduced by the addition of a reinforcement structure, while the gas flow path is configured to minimize flooding and loss of oxygenation efficiency due to occasional rupture of fiber elements. Blood trauma may be further reduced by contouring the vanes and other components of the device.

Abstract translation: 具有提供含氧化合物和泵血液的旋转中空纤维束组件的集成血液泵/充氧器的改进。 沿着装置的中心轴布置的多个叶片增加了纤维束中心附近的压力，以防止微泡产生和血液创伤。 施加在纤维束的纤维元件上的剪切载荷通过添加加强结构而减少，而气体流动路径被配置为最小化由于纤维元件的偶尔破裂引起的淹没和氧合效率的损失。 通过对设备的叶片和其它部件进行轮廓化可以进一步减少血液创伤。

公开(公告)号：US06206659B1

公开(公告)日：2001-03-27

申请号：US08886185

申请日：1997-07-01

Applicant: Valentin M. Izraelev

Inventor： Valentin M. Izraelev

IPC: F04B1700

CPC classification number: F04D1/006 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/3334 ,  F04D13/0646 ,  F04D15/0066 ,  F04D29/2211 ,  F05B2240/53 ,  Y10S415/90

Abstract: A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a pair of fluid inlet ports arranged in oppositely disposed relationship on the chamber, and at least one outlet port arranged transversely and medially of the inlet ports. A rotor assembly is positioned within the pumping chamber having a core in the form of a first surface of revolution and having a dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. At least one shroud is provided spaced outwardly of the surface of the core, with medial vanes being positioned between the surface of the core and shroud, the shroud defining a second surface of revolution coaxially with the axis of the core. The rotor assembly includes magnets which are arranged at radially spaced locations and with a magnetic drive positioned to deliver rotational driving energy to the rotor. The sole support for the rotor assembly are the hydrodynamic forces acting upon the assembly during its operation, with the rotor assembly body having a relative density of between 10% and 90% of the relative density of the fluid being pumped.

Abstract translation: 一种用于输送诸如人体血液的易碎和侵蚀性流体的泵，并且包括泵送室以及以相对设置的关系布置在腔室上的一对流体入口端口，以及至少一个出口端口，其布置在入口端口的横向和内侧。 转子组件位于泵送室内，其具有呈第一旋转表面形式的芯，并且具有会聚到相对的极端部区域并具有在极性区域之间延伸的旋转轴线的双锥形构造。 至少一个护罩设置在芯的表面的外侧间隔开，内侧叶片位于芯体和护罩的表面之间，护罩限定与芯的轴线同轴的第二旋转表面。 转子组件包括被布置在径向间隔开的位置处的磁体，并且具有定位成将旋转驱动能量传递给转子的磁驱动器。 对于转子组件的唯一支撑是在其操作期间作用在组件上的流体动力，其中转子组件主体具有在被泵送的流体的相对密度的10％至90％之间的相对密度。