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    SYSTEMS USING A LEVITATING, ROTATING PUMPING OR MIXING ELEMENT AND RELATED METHODS
    322.
    发明申请
    SYSTEMS USING A LEVITATING, ROTATING PUMPING OR MIXING ELEMENT AND RELATED METHODS 审中-公开
    使用诱导，旋转泵或混合元件的系统及相关方法

    公开(公告)号：WO0241484A3

    公开(公告)日：2003-02-13

    申请号：PCT/US0131459

    申请日：2001-10-09

    Applicant: LEVTECH INC ,  TERENTIEV ALEXANDRE N

    Inventor： TERENTIEV ALEXANDRE N

    IPC: A61M1/10 ,  A61M1/12 ,  B01F13/08 ,  B01F15/06 ,  F04D13/02 ,  F04D29/04 ,  F04D29/048 ,  F16C39/06 ,  H01L39/00 ,  H01L39/04 ,  H02N15/00 ,  F17C3/08

    CPC classification number: F04D29/048 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1036 ,  A61M1/127 ,  B01F7/00908 ,  B01F7/162 ,  B01F13/0018 ,  B01F13/002 ,  B01F13/0818 ,  B01F13/0827 ,  B01F13/0863 ,  B01F13/0872 ,  B01F15/00831 ,  B01F15/0085 ,  B01F2015/061 ,  F04D13/026 ,  F16C32/0438 ,  F16C37/005

    Abstract: A system for pumping or mixing a fluid F using a levitating, rotating pumping or mixing element 812 and various other components for use in a pumping or mixing system are disclosed. The pumping or mixing element 812 is placed in a fluid-containing vessel 810 in close proximity to a superconducting element 818. A cooling source thermally linked to the superconducting element 818 provides the necessary cooling to induce levitation in the pumping or mixing element 812. The superconducting element 818 may be thermally isolated, such that the pumping or mixing element 812, the vessel 810, and any fluid F contained therein are not exposed to the cold temperatures required to produce the desired superconductive effects and the resulting levitation. By using means external to the vessel to rotate and/or stabilize the pumping or mixing element 812 levitating in the fluid F, including possibly rotating the superconducting elements 818 itself or moving it relative to the vessel 810, the desired effective pumping or mixing action may be provided.

    Abstract translation: 公开了一种用于使用悬浮，旋转的泵送或混合元件812以及用于泵送或混合系统中的各种其它部件来泵送或混合流体F的系统。 泵送或混合元件812放置在紧邻超导元件818的含流体的容器810中。与超导元件818热连接的冷却源提供必要的冷却以在泵送或混合元件812中引起悬浮。 超导元件818可以是热隔离的，使得泵送或混合元件812，容器810及其中所含的任何流体F不暴露于产生期望的超导效应和所产生的悬浮所需的冷温度。 通过使用容器外部的装置来旋转和/或稳定在流体F中悬浮的泵送或混合元件812，包括可能旋转超导元件818本身或使其相对于容器810移动，期望的有效泵送或混合动作可以 提供。

    BLOOD PUMP SYSTEM WITH MAGNETIC CABLE DRIVE
    323.
    发明申请
    BLOOD PUMP SYSTEM WITH MAGNETIC CABLE DRIVE 审中-公开
    带电缆驱动的血泵系统带磁性配件

    公开(公告)号：WO00019097A1

    公开(公告)日：2000-04-06

    申请号：PCT/US1999/022573

    申请日：1999-09-30

    IPC: A61M1/10 ,  F04D13/02 ,  F04B17/00

    CPC classification number: F04D29/628 ,  A61M1/1006 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1025 ,  A61M1/1036 ,  F04D13/027 ,  F05B2240/62

    Abstract: A bloop pump system for use in CPB and other heart surgeries includes a magnetic cable drive (28) for remotely driving the blood pump. The magnetic cable drive is configured with magnetic couplings on each end (22, 24) such that the same motor (12) can be used to drive the pump (10) whether the pump is positioned directly on the motor or connected to the motor by the cable drive. This system allows the blood pump to be positioned within the sterile surgical field which advantageously reduces the priming volume of the pump.

    Abstract translation: 本发明涉及一种用于额外体外循环并包括一个磁驱动器电缆（28），用于从所述血泵驱动远离其他心脏外科手术的血泵系统。 驱动线缆包括磁耦合到每个这些端部（22，24），它允许使用相同的电动机（12），所述泵（10）的直接连接到电机或与其连接 通过驱动电缆。 该系统使得能够在无菌区的血液泵，其具有这样的优点，减少了泵的填充量的定位。

    BEARING AND SEAL-FREE BLOOD PUMP
    324.
    发明申请
    BEARING AND SEAL-FREE BLOOD PUMP 审中-公开
    轴承和无密封血液泵

    公开(公告)号：WO1998046879A1

    公开(公告)日：1998-10-22

    申请号：PCT/US1997006205

    申请日：1997-04-14

    Applicant: ADVANCED BIONICS, INC.

    Inventor： ADVANCED BIONICS, INC. ,  IZRAELEV, Valentin, M.

    IPC: F04B17/00

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

    Abstract: A pump (10) for transferring fragile and aggressive liquids such as human blood and comprising a pumping chamber (12) along with a pair of fluid inlet ports (16, 17) arranged in oppositely disposed relationship on the chamber, and one or more outlet ports (18, 19) arranged transversely and medially of the inlet ports. A rotor (20) is positioned within the pumping chamber having a dual-conical configuration converging toward opposed polar end regions (21, 22) and with an axis of rotation extending between the polar regions. The rotor includes magnets (24) 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 (20) are the hydrodynamic forces acting upon the rotor during its operation, with the rotor body having a relative density of between 10 % and 90 % of the relative density of the fluid being pumped.

    Abstract translation: 一种泵（10），用于传送诸如人血的易碎和侵蚀性液体，并且包括泵送室（12）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（16,17），以及一个或多个出口 端口（18,19）布置在入口端口的横向和中间。 转子（20）位于泵送室内，具有会聚到相对的极端区域（21,22）并且在极性区域之间延伸的旋转轴线的双锥形构造。 转子包括磁体（24），磁体（24）布置在径向间隔开的位置处，并且磁驱动器被定位成将旋转驱动能量传递给转子。 转子（20）的唯一支撑是在其操作期间作用在转子上的流体动力，转子体的相对密度在被泵送流体的相对密度的10％至90％之间。

    FLUID PUMP WITH IMPROVED MAGNETICALLY LEVITATED IMPELLER
    326.
    发明申请
    FLUID PUMP WITH IMPROVED MAGNETICALLY LEVITATED IMPELLER 审中-公开
    具有改进的磁力液压叶轮的流体泵

    公开(公告)号：WO1994013955A1

    公开(公告)日：1994-06-23

    申请号：PCT/US1993012180

    申请日：1993-12-13

    Applicant: KLETSCHKA, Harold, D.

    IPC: F04B17/00

    CPC classification number: F04D29/048 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1022 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  F04D5/001 ,  F04D13/06 ,  F04D13/0646 ,  F04D29/186 ,  F04D29/426 ,  F04D29/445 ,  F05B2240/11 ,  F05B2240/515 ,  F16C32/0423 ,  F16C2316/18 ,  H02K7/09 ,  H02K7/14 ,  H02K21/14 ,  Y10S415/90

    Abstract: A fluid pump with a rotary impeller is disclosed which comprises an electromagnetically-driven, bearing-free, seal-free rotary impeller (16) 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 (70, 70', 75, 75'), opposed by permanent magnets, solenoids or electromagnets (70, 70', 75, 75'). 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，其包括通过局部相对的磁力和流体力悬浮的电磁驱动，无轴承的无密封的旋转叶轮（16），或仅通过局部相对的磁力。 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。 磁力由通过永磁体，螺线管或电磁体（70,70'，75,75'）相对的二电磁体或螺线管（70,70'，75,75'）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。

    MODULAR DISPOSABLE BLOOD OXYGENATORS WITH REUSABLE HEAT SOURCE AND OTPIONAL INTEGRATED BLOOD PUMP
    327.
    发明申请
    MODULAR DISPOSABLE BLOOD OXYGENATORS WITH REUSABLE HEAT SOURCE AND OTPIONAL INTEGRATED BLOOD PUMP 审中-公开
    具有可回收热源的模块化溶解性血液氧化剂和腹腔积液血液泵

    公开(公告)号：WO1994008640A1

    公开(公告)日：1994-04-28

    申请号：PCT/US1993009600

    申请日：1993-10-07

    Applicant: BAXTER INTERNATIONAL INC.

    Inventor： BAXTER INTERNATIONAL INC. ,  RAIBLE, Donald

    IPC: A61M01/16

    CPC classification number: A61M1/3627 ,  A61M1/1006 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1036 ,  A61M1/1046 ,  A61M1/1625 ,  A61M1/1629 ,  A61M1/1698 ,  A61M1/3632 ,  B01D63/02 ,  B01D2313/38

    Abstract: A blood oxygenator/heat exchanger system (10) includes disposable and durable components, the latter being possible of permanent installation to further reduce costs, inconvenience and risks of use. The system may selectively include a blood pump (136) of axial, centrifugal, or ventricular type, along with an integral venous reservoir (206). By combination, arrangement and cooperation of structural features blood pumping volume is decreased, advantageous blood flow paths are achieved, blood damage is reduced, and durable components are reusable for lowest costs. The oxygenator/heat exchanger (58) nests upon a durable heat source base (24) to be supported thereby, while redundant boundaries are provided between blood and heat transfer media.

    Abstract translation: 血液充氧器/热交换器系统（10）包括一次性和耐用的部件，后者可以永久安装，以进一步降低成本，不便和使用风险。 该系统可以选择性地包括轴向，离心或心室型血液泵（136）以及整体静脉储存器（206）。 通过结合，结构特点的排列与配合，血液抽取体积减少，实现有利的血液流路，减少血液损伤，耐用部件可重复利用，成本最低。 氧合器/热交换器（58）嵌套在耐用的热源基座（24）上，由此支撑，同时在血液和传热介质之间提供冗余的边界。

    PUMPING APPARATUS WITH FIXED CHAMBER IMPELLER
    328.
    发明申请
    PUMPING APPARATUS WITH FIXED CHAMBER IMPELLER 审中-公开
    具有固定式室内叶轮的泵装置

    公开(公告)号：WO1993020860A1

    公开(公告)日：1993-10-28

    申请号：PCT/US1993002110

    申请日：1993-03-10

    Applicant: MEDTRONIC, INC.

    Inventor： MEDTRONIC, INC. ,  JOHNSON, George, M.

    IPC: A61M01/10

    CPC classification number: F04D29/242 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1036 ,  F04D1/04 ,  F04D13/024 ,  F04D29/2272

    Abstract: Apparatus and method for pumping blood and other delicate fluids. The apparatus includes a rotor (12) having an impeller (18) which includes an upper section (22) and a lower section (20) with oppositely disposed surfaces (26, 28), the upper section (22) having a central opening (24). Separating surfaces (30) disposed between the upper and lower sections (22, 20) define a plurality of fluid flow passages (32) between the oppositely disposed surfaces (26, 28). The separating surfaces (30) include a leading edge (45) and a trailing edge (47), the leading edge (45) being disposed at or near the central opening (24) and the trailing edge (47) being disposed at or near the peripheral edge (34) of the impeller (18). This construction maximizes the pressure differential of the fluid from the inlet to the outlet and minimizes turbulence such that the pump has good air entrapment capabilities as well as gentle blood handling characteristics.

    Abstract translation: 用于抽血和其他精细液体的装置和方法。 该装置包括具有叶轮（18）的转子（12），该叶轮包括具有相对设置表面（26,28）的上部分（22）和下部分（20），上部部分（22）具有中心开口 24）。 设置在上部和下部（22,20）之间的分离表面（30）在相对设置的表面（26,28）之间限定多个流体流动通道（32）。 分离表面（30）包括前缘（45）和后缘（47），前缘（45）设置在中央开口（24）处或附近，后缘（47）设置在或靠近 叶轮（18）的周缘（34）。 这种结构使得流体从入口到出口的压差最大化，并使湍流最小化，使得泵具有良好的空气截留能力以及温和的血液处理特性。

    Flow Estimation Using Hall-Effect Sensors
    329.
    发明申请
    Flow Estimation Using Hall-Effect Sensors 审中-公开

    公开(公告)号：US20190231954A1

    公开(公告)日：2019-08-01

    申请号：US16382686

    申请日：2019-04-12

    Applicant: TC1 LLC

    Inventor： Christopher J. Cotter

    IPC: A61M1/10

    CPC classification number: A61M1/1086 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  A61M2205/3317 ,  A61M2205/3334 ,  A61M2205/3365 ,  A61M2205/8212

    Abstract: Methods and apparatus for estimating flow rate in a blood circulation assist system employing impeller eccentricity. A method includes magnetically rotating an impeller within a blood flow channel of a blood pump. The impeller is levitated within the blood flow channel transverse to the impeller axis of rotation. A rotational speed for the impeller is determined. At least one impeller transverse position parameter is determined. The at least one impeller transverse position parameter is based on at least one of (1) an amount of a bearing current that is used to levitate the impeller transverse to the impeller axis of rotation, and (2) a position of the impeller within the blood flow channel transverse to the impeller axis of rotation. A flow rate of blood pumped by the blood pump is estimated based on the impeller rotational speed and the at least one impeller transverse position parameter.

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