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    Fluid pump with magnetically levitated impeller
    211.
    发明授权
    Fluid pump with magnetically levitated impeller 失效
    具有磁悬浮叶轮的流体泵

    公开(公告)号：US5470208A

    公开(公告)日：1995-11-28

    申请号：US990985

    申请日：1992-12-16

    Applicant: Harold D. Kletschka

    Inventor： Harold D. Kletschka

    IPC: F04D13/02 ,  A61M1/10 ,  F04D5/00 ,  F04D13/06 ,  F04D29/04 ,  F04D29/048 ,  F04D29/18 ,  F04D29/42 ,  F04D29/44 ,  F16C39/06 ,  H02K7/09 ,  H02K7/14 ,  H02K21/14 ,  F04B17/03

    CPC classification number: F04D29/048 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1036 ,  F04D13/06 ,  F04D13/0646 ,  F04D29/186 ,  F04D29/426 ,  F04D29/445 ,  F04D5/001 ,  F16C32/0423 ,  H02K21/14 ,  H02K7/09 ,  F05B2240/11 ,  F05B2240/515 ,  H02K7/14 ,  Y10S415/90

    Abstract: A fluid pump with a rotary impeller is disclosed which comprises an electromagnetically-driven, bearing-free, seal-free rotary impeller levitated by localized opposed, magnetic forces and by fluid forces, or by localized opposed magnetic forces only. Levitation by localized opposed magnetic forces alone or by a combination of magnetic and fluid forces of an impeller driven by electromagnetic forces eliminates the need for bearings and seals in the driving mechanism. This avoids the heat build-up and leakage associated with other pumping mechanisms, which can be of importance in pumping of physiological fluids such as blood. The levitating forces of the present invention are applied both axially and radially with respect to the impeller. The magnetic forces are provided by a combination of diamagnets or solenoids, opposed by permanent magnets, solenoids or electromagnets. The invention should be of use in numerous medical and non-medical applications where the benefits of impeller levitation by localized forces are apparent.

    Abstract translation: 公开了一种具有旋转叶轮的流体泵，其包括由局部相对的磁力和流体力或仅通过局部相对的磁力悬挂的电磁驱动的无轴承的无密封的旋转叶轮。 通过局部相对的磁力悬浮或通过由电磁力驱动的叶轮的磁力和流体力的组合来排除驱动机构中的轴承和密封件的需要。 这避免了与其他泵送机构相关的热积聚和泄漏，这在泵送诸如血液的生理液体中是重要的。 本发明的悬浮力相对于叶轮轴向和径向地施加。 磁力通过由永磁体，螺线管或电磁体相对的二电磁体或螺线管的组合提供。 本发明应用于许多医疗和非医疗应用，其中通过局部力量的叶轮悬浮的益处是显而易见的。

    Blood pump
    212.
    发明授权
    Blood pump 失效
    血泵

    公开(公告)号：US5368438A

    公开(公告)日：1994-11-29

    申请号：US083405

    申请日：1993-06-28

    Applicant: Donald A. Raible

    Inventor： Donald A. Raible

    IPC: A61M1/10 ,  F04D29/22 ,  F04D1/08

    CPC classification number: A61M1/101 ,  A61M1/1034 ,  A61M1/1036 ,  F04D29/2277 ,  F05B2260/604 ,  Y10S415/90

    Abstract: A dynamic blood pump includes a rotating core member and rotating ring portion effective to pre-spin blood before the blood enteres helical pumping channels of the pump. The blood is pumped and further rotated as it moves axially along the helical channels toward a centrifugal section of the pump. At the centrifugal pumping section circumferential velocity differentials are also controlled to diminish damage to the blood. Outwardly of the centrifugal pumping section, a forced-vortex pumping section communicates the pumped blood to an exit port.

    Abstract translation: 动态血泵包括旋转芯部件和旋转环部分，其有效地在血液进入泵的螺旋泵送通道之前预先旋转血液。 当血液沿着螺旋通道轴向移动到泵的离心部分时，血液被泵送并进一步旋转。 在离心泵送部分，圆周速度差也被控制以减少对血液的损伤。 在离心泵送部分的外部，强迫涡流泵送部分将泵送的血液连通到出口。

    Fluid motor driven blood pump
    213.
    发明授权
    Fluid motor driven blood pump 失效
    流体马达驱动血液泵

    公开(公告)号：US5145333A

    公开(公告)日：1992-09-08

    申请号：US486953

    申请日：1990-03-01

    Applicant: William A. Smith

    Inventor： William A. Smith

    IPC: A61M1/10 ,  F04D13/02 ,  F04D13/04 ,  F04D29/10

    CPC classification number: A61M1/101 ,  A61M1/102 ,  A61M1/1036 ,  F04D13/024 ,  F04D13/04 ,  F04D13/046 ,  F04D29/108 ,  Y10S415/90

    Abstract: A rotary blood pump includes an impeller in a pump chamber driven by a fluid motor. In a first preferred embodiment, the fluid motor includes a rotary member having a series of cupped fluid reactive surfaces that receive a tangential inlet pressurized fluid flow. The cupped surfaces direct the fluid to opposite sides of the rotary member. Passages extending through the rotary member convey fluid from one side of the rotary member to the other. In a second preferred arrangement, the fluid motor is defined by a positive displacement motor. In a third embodiment, the fluid motor is separated from the pump chamber by a wall. Both biocompatible and non-biocompatible fluids can be used to drive the fluid motor.

    Abstract translation: 旋转式血液泵包括由流体马达驱动的泵室中的叶轮。 在第一优选实施例中，流体马达包括旋转构件，该旋转构件具有接收切向入口加压流体流的一系列杯形流体反应表面。 杯形表面将流体引导到旋转构件的相对侧。 通过旋转构件的通道将流体从旋转构件的一侧输送到另一侧。 在第二优选布置中，流体马达由正位移马达限定。 在第三实施例中，流体马达通过壁与泵室分离。 生物相容性和非生物相容性的两种流体均可用于驱动流体马达。

    Rotary pump
    214.
    发明授权
    Rotary pump 失效
    旋转泵

    公开(公告)号：US4895493A

    公开(公告)日：1990-01-23

    申请号：US217653

    申请日：1988-08-18

    Applicant: Harold D. Kletschka

    Inventor： Harold D. Kletschka

    IPC: A61M1/10 ,  F04D13/02 ,  F04D13/04 ,  F04D29/62

    CPC classification number: A61M1/101 ,  A61M1/102 ,  A61M1/1034 ,  A61M1/1036 ,  F04D13/024 ,  F04D13/04 ,  F04D29/628

    Abstract: A rotary pump mechanism is disclosed which comprises a coupling section that couples an impeller and drives the coupling section and, in turn, the impeller. The coupling section incorporates most of the components of the pump that wear out and are expensive. As a result, the impeller can be disposed of without disposing of other components. The coupling section can also be changed for continuous operation of a single impeller. Although the preferred application of the invention is in the area of pumping blood and other biological fluids, the disclosed invention has utility in any application where it is desirable to turn an "impeller-like" element.

    Abstract translation: 公开了一种旋转泵机构，其包括联接部分，该联接部分联接叶轮并且驱动联接部分，并且驱动叶轮。 联接部分结合了泵的大多数部件磨损并且昂贵。 结果，可以处理叶轮而不处理其它部件。 为了连续操作单个叶轮，也可以改变联接部分。 虽然本发明的优选应用是在抽血和其它生物流体的领域中，但是所公开的发明在任何需要转动“叶轮状”元件的应用中具有实用性。

    Centrifugal blood pump for cardiac assist
    215.
    发明授权
    Centrifugal blood pump for cardiac assist 失效
    离心血泵用于心脏辅助

    公开(公告)号：US4135253A

    公开(公告)日：1979-01-23

    申请号：US746008

    申请日：1976-11-30

    Applicant: Sanford Reich ,  William H. Gates

    Inventor： Sanford Reich ,  William H. Gates

    IPC: A61M1/10 ,  A61M1/12 ,  F04D13/02 ,  F04D29/10 ,  A61F1/24 ,  A61M1/03

    CPC classification number: F04D13/024 ,  A61M1/101 ,  A61M1/102 ,  A61M1/1036 ,  F04D29/108 ,  A61M1/12 ,  Y10S415/90

    Abstract: A centrifugal blood pump and method of pumping blood is disclosed to provide assistance for a dysfunctional heart. The pump is provided with a magnetic drive system which permits a synchronous magnetic coupling with a separate power unit disposed immediately adjacent the pump housing. The pump has a single moving part which includes the combination of an impeller connected to a magnetic drive rotor. The impeller is of improved blade and hub design to automatically move blood, and minimize formation of blood clots and fibrous amalgamation in the region of blood flow. Further, the impeller blades are configured to extend almost completely across the bottom surface of the impeller hub to enhance efficiency and clot-free operation. The magnetic drive system floats on a fluid surface of saline solution, which hydrodynamically supports and lubricates the magnetic drive rotor contained in a compartment separate from the impeller and facilitates a prolonged period of service-free operation.

    Abstract translation: 公开了一种离心式血液泵和血液泵送方法来为功能障碍的心脏提供帮助。 该泵设置有磁驱动系统，其允许与紧邻泵壳体设置的单独的动力单元进行同步磁耦合。 泵具有单个移动部件，其包括连接到磁驱动转子的叶轮的组合。 叶轮具有改进的叶片和轮毂设计，可自动移动血液，并最大程度减少血液流形成的血块和纤维合并。 此外，叶轮叶片构造成几乎完全延伸穿过叶轮毂的底表面以提高效率和无凝结的操作。 磁力驱动系统漂浮在盐水溶液的流体表面上，液体流体动力学地支撑和润滑包含在与叶轮分离的隔室中的磁力驱动转子，并且有助于延长使用寿命。

    EXTRACORPOREAL AMBULATORY ASSIST LUNG
    216.
    发明申请
    EXTRACORPOREAL AMBULATORY ASSIST LUNG 审中-公开

    公开(公告)号：US20180353673A9

    公开(公告)日：2018-12-13

    申请号：US15738406

    申请日：2016-06-23

    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education ,  Carnegie Mellon University ,  Mississippi State University

    Inventor： Shalv Madhani ,  Brian Joseph Frankowski ,  William J. Federspiel ,  Gregory Burgreen ,  James F. Antaki

    IPC: A61M1/36 ,  A61M1/10 ,  A61M1/16

    CPC classification number: A61M1/3667 ,  A61M1/1006 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1036 ,  A61M1/1625 ,  A61M1/1698 ,  A61M1/3666 ,  A61M2205/7536

    Abstract: An extracorporeal system for lung assist includes a housing which includes a blood flow inlet in fluid connection with a pressurizing stator compartment, a fiber bundle compartment in fluid connection with the pressurizing stator compartment via a flow channel within the housing, and a blood flow outlet in fluid connection with the fiber bundle compartment. An impeller is rotatably positioned within the pressurizing compartment for pressurizing blood entering the pressurizing stator compartment from the blood flow inlet. The system further includes a fiber bundle positioned within the fiber bundle compartment. The fiber bundle includes a plurality of hollow gas permeable fibers. The plurality of hollow gas permeable fibers is adapted to permit diffusion of gas between blood and an interior of the hollow gas permeable fibers. The plurality of hollow gas permeable fibers is positioned such that blood flows around the plurality of hollow gas permeable fibers when flowing through the fiber bundle compartment. The plurality of hollow gas permeable fibers extend generally perpendicular to the direction of bulk flow of blood through the fiber bundle compartment from the flow channel to the blood flow outlet. The system further includes a gas inlet in fluid connection with the housing and in fluid connection with inlets of the plurality of hollow gas permeable fibers and a gas outlet in fluid connection with the housing and in fluid connection with outlets of the plurality of hollow gas permeable fibers.

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