公开(公告)号：US08807968B2

公开(公告)日：2014-08-19

申请号：US14047717

申请日：2013-10-07

Applicant: Thoratec Corporation

Inventor： Richard K. Wampler ,  David M. Lancisi

IPC: A61M1/10 ,  F04D29/041 ,  F04D29/046 ,  F04D29/047 ,  F04D29/048

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 and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.

Abstract translation: 为旋转泵提供了包括流体动力和磁性轴承的各种“非接触式”轴承机构，作为机械接触轴承的替代品。 在一个实施例中，泵装置包括限定泵送室的泵壳体。 壳体具有延伸到泵送室中的主轴。 主轴磁体组件包括设置在主轴内的第一和第二磁体。 第一和第二磁体彼此相邻布置，它们各自的磁矢量彼此相对。 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：US20140205467A1

公开(公告)日：2014-07-24

申请号：US13748780

申请日：2013-01-24

Applicant: THORATEC CORPORATION

Inventor： Masamichi Yanai ,  Jeffrey H. Campau ,  Jason C. Nanna

IPC: F04B35/04

CPC classification number: F04D15/0094 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/3303 ,  A61M2205/3507 ,  F04B35/04 ,  F04D7/04 ,  F04D13/024 ,  F04D13/0666 ,  F04D15/0088 ,  F04D29/041 ,  F04D29/0473 ,  F04D29/048 ,  F04D29/22 ,  F04D29/426 ,  F04D29/428 ,  H02P6/18

Abstract: A centrifugal pump system having an impeller rotating with first and second magnetic structures on opposite surfaces. A levitation magnetic structure is disposed at a first end of a pump housing having a levitating magnetic field for axially attracting the first magnetic structure. A multiphase magnetic stator at a second end of the pump housing generates a rotating magnetic field for axially and rotationally attracting the second magnetic structure. A commutator circuit provides a plurality of phase voltages to the stator. A sensing circuit determines respective phase currents. A controller calculates successive commanded values for the phase voltages in response to the determined phase currents and a variable commutation angle. The angle is selected to correspond to an axial attractive force of the stator that maintains a levitation of the impeller at a centered position within the pumping chamber.

Abstract translation: 一种离心泵系统，其具有在相对表面上以第一和第二磁性结构旋转的叶轮。 悬浮磁性结构设置在具有用于轴向吸引第一磁性结构的悬浮磁场的泵壳体的第一端。 在泵壳的第二端处的多相磁性定子产生用于轴向和旋转地吸引第二磁性结构的旋转磁场。 换向器电路向定子提供多个相电压。 感测电路确定各自的相电流。 控制器响应于所确定的相电流和可变换流角来计算相电压的连续命令值。 角度被选择为对应于定子的轴向吸引力，其保持叶轮在泵送室内的中心位置的悬浮。

公开(公告)号：US20140179983A1

公开(公告)日：2014-06-26

申请号：US14191312

申请日：2014-02-26

Applicant: Jeffrey A. LaRose ,  Charles R. Shambaugh

Inventor： Jeffrey A. LaRose ,  Charles R. Shambaugh

IPC: A61M1/10

CPC classification number: A61M1/1036 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1029 ,  A61M1/1031 ,  A61M1/122 ,  A61M1/127 ,  F04D13/0633 ,  F04D13/0666 ,  F04D29/0473 ,  F04D29/048

Abstract: A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller.

Abstract translation: 旋转式血液泵包括限定泵送室的壳体。 泵送室具有血液入口和切向血液出口。 一个或多个电动机定子被设置在泵送室的外部。 可旋转叶轮在泵送室内并且适于使血液进入泵送室移动到血液出口。 叶轮具有一个或多个磁性区域。 叶轮通过磁耦合到一个或多个电动机定子而被径向约束旋转，并且通过叶轮上的一个或多个流体动力推力轴承表面轴向地受到约束。

公开(公告)号：US20140148638A1

公开(公告)日：2014-05-29

申请号：US14171615

申请日：2014-02-03

Applicant: Jeffrey A. LaRose ,  Charles R. Shambaugh, Jr. ,  Daniel G. White ,  Richard A. Marquis ,  Steven A. White

Inventor： Jeffrey A. LaRose ,  Charles R. Shambaugh, Jr. ,  Daniel G. White ,  Richard A. Marquis ,  Steven A. White ,  Kartikeyan Trichi

IPC: A61M1/10

CPC classification number: A61M1/125 ,  A61M1/1008 ,  A61M1/101 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  A61M2205/0211 ,  A61M2205/0272 ,  A61M2205/8206 ,  A61M2210/127

Abstract: One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor.

Abstract translation: 血管内心室辅助装置的一个方面是可植入血液泵，其中泵包括限定具有轴的孔的壳体，设置在孔内的一个或多个转子，每个转子包括多个磁极，以及一个或多个围绕 所述孔用于在所述孔内提供磁场以引起所述一个或多个转子中的每一个的旋转。 本发明的另一方面包括向例如人类的哺乳动物受试者提供心脏辅助的方法。 本发明的其它方面包括具有沿着转子主体的长度纵向形成的螺旋通道的转子体，其中每个螺旋通道形成在围绕转子的旋转轴线的径向向外并沿圆周方向延伸的周向支撑表面区域之间。

公开(公告)号：US20140066690A1

公开(公告)日：2014-03-06

申请号：US14014957

申请日：2013-08-30

Applicant: Andre Siebenhaar ,  Andreas Fleischli

Inventor： Andre Siebenhaar ,  Andreas Fleischli

IPC: A61M1/12

CPC classification number: A61M1/127 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1029 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/1086 ,  A61M1/122 ,  F04C2270/0421 ,  F04D1/00 ,  F04D7/02 ,  F04D13/024 ,  F04D15/00 ,  F04D29/426 ,  F05B2240/14 ,  F05B2240/30 ,  F05B2270/10 ,  F05B2270/404

Abstract: A system and a method for starting a rotor of an implantable blood pump are described. For example, a blood pump system includes a rotary motor having a stator and a rotor. The rotor has permanent magnetic poles for magnetic levitation of the rotor, and the stator has a plurality of pole pieces arranged circumferentially at intervals. The blood pump system includes a controller configured to control a start phase of the rotor, wherein the start phase is prior to the rotor being positioned in a predefined geometric volume for pumping blood and wherein the start phase includes performing a rotation of the rotor by an angle larger than an angle corresponding to a quarter of an angular distance between two neighboring magnetic poles of the rotor.

Abstract translation: 描述了用于启动可植入血液泵的转子的系统和方法。 例如，血液泵系统包括具有定子和转子的旋转马达。 转子具有用于转子磁悬浮的永久磁极，并且定子具有间隔地周向布置的多个极片。 血液泵系统包括被配置为控制转子的起始阶段的控制器，其中起动阶段在转子位于用于泵送血液的预定几何体积之前，并且其中起动阶段包括通过一个 角度大于对应于转子的两个相邻磁极之间的角距离的四分之一的角度。

公开(公告)号：US20140037477A1

公开(公告)日：2014-02-06

申请号：US14047717

申请日：2013-10-07

Applicant: Thoratec Corporation

Inventor： Richard K. Wampler ,  David M. Lancisi

IPC: F04D29/041

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 and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.

Abstract translation: 为旋转泵提供了包括流体动力和磁性轴承的各种“非接触式”轴承机构，作为机械接触轴承的替代品。 在一个实施例中，泵装置包括限定泵送室的泵壳体。 壳体具有延伸到泵送室中的主轴。 主轴磁体组件包括设置在主轴内的第一和第二磁体。 第一和第二磁体彼此相邻布置，它们各自的磁矢量彼此相对。 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：US20130245361A1

公开(公告)日：2013-09-19

申请号：US13784434

申请日：2013-03-04

Applicant: Richard Wampler

Inventor： Richard Wampler

IPC: A61M1/10

CPC classification number: A61M1/1017 ,  A61M1/1008 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/102 ,  A61M1/1022 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  A61M1/125

Abstract: A heart assist device comprising a rotary pump housing having a cylindrical bore, a pumping chamber and a motor stator including an electrically conductive coil located within the housing and surrounding a portion of the cylindrical bore. A rotor has a cylindrical shaft, at least one impeller appended to one end of the shaft, and a plurality of magnets located within the shaft. The rotor shaft is positioned within the housing bore with the magnets opposite the motor stator, and the impeller is positioned within the pumping chamber. The housing bore is closely fitted to the outer surface of the shaft forming a hydrodynamic journal bearing, with the pumping chamber and journal bearing connected by a leak path of blood flow between the pumping chamber and the journal bearing. A backiron of the motor stator attracts the rotor magnets to resist longitudinal displacement of the rotor within the housing during operation. The relative orientation of positions of the inflow, outflow, and leakage flow paths may be varied within the pump, such as to accommodate different intended methods for implantation and/or use.

公开(公告)号：US08517699B2

公开(公告)日：2013-08-27

申请号：US12336283

申请日：2008-12-16

Applicant: David Horvath

Inventor： David Horvath

IPC: F04B35/04

CPC classification number: F04D29/428 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  A61M1/127 ,  F04D13/0673 ,  F04D29/0473 ,  F04D29/441

Abstract: A pump includes: (a) an elongated pump housing having first and second ends; (b) a primary impeller mounted in the housing for rotation about an axis, the impeller comprising a plurality of vanes whose outer tips define an impeller plane; (c) an inlet disposed in fluid communication with the primary impeller; and (d) an annular volute housing communicating with the primary impeller and with an outlet, where the volute housing is axially offset from the impeller plane.

Abstract translation: 泵包括：（a）具有第一和第二端的细长泵壳体; （b）安装在所述壳体中以绕轴线旋转的主叶轮，所述叶轮包括多个叶片，其外部尖端限定叶轮平面; （c）设置成与所述主叶轮流体连通的入口; 和（d）与主叶轮连通并具有出口的环形蜗壳壳体，其中蜗壳壳体与叶轮平面轴向偏移。

公开(公告)号：US20130053625A1

公开(公告)日：2013-02-28

申请号：US13592439

申请日：2012-08-23

Applicant: Salvador MERCÉ VIVES

Inventor： Salvador MERCÉ VIVES

IPC: A61M1/10

CPC classification number: F04B43/06 ,  A61M1/10 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1036 ,  A61M1/1037 ,  A61M1/1086 ,  F04B43/067

Abstract: Hydraulic pulsation equipment is intended for varying the volume of a chamber of a perfusion pump by alternatively inflating and deflating the same by means of a movement transmitting liquid fluid. It comprises a lung body provided with an elastic and deformable frontal membrane over which an external piston, which can be moved alternatively in both directions, enters into contact, and said piston originates from one of the sides of a control console. This console also has an enveloping ring head that surrounds the external piston, while constituting the fixation means of the lung body, which has a terminal narrowing connected to an intermediate tubular duct culminating in the chamber of the perfusion pump, and the movement transmitting liquid fluid is located in a space comprising a front part of the lung body, the intermediate tubular duct and the chamber of the perfusion pump.

Abstract translation: 液压脉动设备旨在通过交替地通过传送液体流体的运动来对其进行充气和放气来改变灌注泵的腔室的体积。 它包括一个设置有弹性和可变形的前膜的肺体，可以在两个方向上交替移动的外部活塞通过该肺活动接触，并且所述活塞起始于控制台的一侧。 该控制台还具有围绕外部活塞的包络环头，同时构成肺体的固定装置，其具有连接到最终达到灌注泵的腔室的中间管状导管的端部变窄，并且运动传递液体流体 位于包括肺体的前部，中间管状管道和灌注泵的腔室的空间中。

公开(公告)号：US20120207630A1

公开(公告)日：2012-08-16

申请号：US13397599

申请日：2012-02-15

Applicant: Tadahiko Shinshi ,  Akira Shimokohbe ,  Junichi Asama ,  Chikara Hara ,  Wataru Hijikata ,  Setsuo Takatani ,  Hideo Hoshi

Inventor： Tadahiko Shinshi ,  Akira Shimokohbe ,  Junichi Asama ,  Chikara Hara ,  Wataru Hijikata ,  Setsuo Takatani ,  Hideo Hoshi

IPC: F04B17/00

CPC classification number: A61M1/1015 ,  A61M1/10 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1036 ,  Y10S415/90

Abstract: A disposable centrifugal blood pump with magnetic coupling provides a centrifugal blood pump with magnetic coupling which is simple in structure of disposable parts with low cost. Therefore, a housing as the disposable part includes a rotor having pole faces extending on the outer-peripheral surface and projecting inward from the inner-peripheral surface and an impeller attached to the rotor, and a stator as a reusable part includes three or more electromagnets for electromagnetic coupling for forming a magnetic coupling between the stator and the rotor, a torque transmission disk formed by sandwiching a ring-shaped permanent magnet between two upper and lower ring members and having pole faces corresponding to the pole faces projecting from the inner-peripheral surface of the rotor formed to project for generating a magnetic coupling between stator and rotor, a motor for rotating the torque transmission disk, and a displacement gauge for measuring displacement of the rotor.

Abstract translation: 具有磁耦合功能的一次性离心血泵提供具有磁耦合的离心式血泵，其结构简单，成本低廉。 因此，作为一次性部件的壳体包括具有在外周面上延伸并从内周面向内突出的极面的转子和附接到转子的叶轮，作为可再利用部的定子包括三个以上的电磁体 用于形成定子和转子之间的磁耦合的电磁耦合;扭矩传递盘，其通过将环形永磁体夹在两个上下环构件之间而形成，并具有与从内周面突出的极面对应的极面 形成为用于产生定子和转子之间的磁耦合的突起的转子的表面，用于旋转扭矩传递盘的电动机和用于测量转子的位移的位移计。