公开(公告)号：US06416215B1

公开(公告)日：2002-07-09

申请号：US09460600

申请日：1999-12-14

Applicant: Alexandre N. Terentiev

Inventor： Alexandre N. Terentiev

IPC: B01F1308

CPC classification number: F16C32/0438 ,  A61M1/1006 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1036 ,  A61M1/127 ,  F16C37/005 ,  Y10S505/879 ,  Y10S505/892

Abstract: A system capable of pumping or mixing relatively warm fluids using a rotating magnetic element or bearing levitated by a cold superconducting element is disclosed. The magnetic element or bearing carries at least one impeller and is placed in a fluid vessel positioned external to the outer wall of a cryostat or other housing for the superconducting element. A separate cooling source thermally linked to the superconducting element provides the necessary cooling to create the desired superconductive effects and induce levitation in the magnetic element or bearing. The outer wall or housing defines a chamber around the cold superconducting element that thermally isolates it from the vessel. To ensure that the desired level of thermal isolation is provided, this chamber is evacuated or filled with an insulating material. This thermal isolation allows for placement of the superconducting element in close proximity to the wall or housing adjacent to the vessel to achieve a significant reduction in the separation distance from the magnetic element or bearing. This enhances the magnetic stiffness and loading capacity of the levitating element or bearing. However, since the superconducting element is thermally isolated from the outer wall or housing, the vessel, and hence the magnetic element/bearing and fluid contained therein, are not exposed to the cold temperatures required to produce the desired superconductive effects and the resultant levitation. By using means external to the vessel to rotate and/or stabilize the magnetic element/bearing levitating in the fluid, the desired pumping or mixing action is provided.

Abstract translation: 公开了一种能够使用旋转磁性元件或由冷超导元件悬浮的轴承来泵送或混合相对温暖的流体的系统。 磁性元件或轴承承载至少一个叶轮并且被放置在位于超导元件的低温恒温器或其它壳体的外壁外部的流体容器中。 与超导元件热连接的单独的冷却源提供必要的冷却，以产生期望的超导效应并引起磁性元件或轴承中的悬浮。 外壁或外壳围绕冷超导元件限定一个室，使其与容器热隔离。 为了确保提供所需的热隔离水平，该室被抽真空或填充有绝缘材料。 该热隔离允许将超导元件放置在靠近容器的壁或壳体附近，以实现与磁性元件或轴承的间隔距离的显着减小。 这提高了悬​​浮元件或轴承的磁刚度和负载能力。 然而，由于超导元件与外壁或壳体热隔离，所以容器以及因此其中所含的磁性元件/轴承和流体不会暴露于产生所需超导效应和由此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/或稳定在流体中悬浮的磁性元件/轴承，提供所需的泵送或混合动作。

公开(公告)号：US06302661B1

公开(公告)日：2001-10-16

申请号：US09459146

申请日：1999-12-10

Applicant: Pratap S. Khanwilkar ,  Paul E. Allaire ,  Gill Brent Bearnson ,  Don B. Olsen ,  Eric H. Maslen ,  James W. Long

Inventor： Pratap S. Khanwilkar ,  Paul E. Allaire ,  Gill Brent Bearnson ,  Don B. Olsen ,  Eric H. Maslen ,  James W. Long

IPC: F04B1700

CPC classification number: F04D29/048 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/1086 ,  A61M1/122 ,  A61M1/127 ,  F04D13/0633 ,  F04D13/0646 ,  F05B2240/515 ,  Y10S415/90

Abstract: An apparatus and method for a centrifugal pump for pumping sensitive biological fluids which includes (i) an integral impeller and rotor which is electromagnetically supported and rotated, (ii) a pump housing and arcuate passages for fluid flow and containment, (iii) a brushless driving motor embedded and integral with the pump housing, (iv) a power supply, and (v) specific electronic sensing and control algorithms—all fitly joined together to provide efficient, durable and low maintenance pump operation. A specially designed impeller and pump housing provide the mechanism for transport and delivery of fluid through the pump to a pump output port with reduced fluid turbulence.

Abstract translation: 一种用于泵送敏感生物流体的离心泵的装置和方法，其包括（i）电磁支撑和旋转的整体叶轮和转子，（ii）用于流体流动和容纳的泵壳体和弧形通道，（iii）无刷 驱动电动机嵌入式并与泵壳一体化，（iv）电源，以及（v）特定的电子感应和控制算法 - 所有这些都适合连接在一起，以提供高效，耐久和低维护的泵运行。 特别设计的叶轮和泵壳体提供了通过泵将流体输送和输送到具有减少的流体湍流的泵输出端口的机构。

公开(公告)号：US6152704A

公开(公告)日：2000-11-28

申请号：US164396

申请日：1998-09-30

Applicant: Walid Najib Aboul-Hosn ,  Kelly McCrystle ,  Desmond O'Connell

Inventor： Walid Najib Aboul-Hosn ,  Kelly McCrystle ,  Desmond O'Connell

IPC: A61M1/10 ,  F04D13/02 ,  F04D13/04 ,  F04D29/62 ,  F04B17/00

CPC classification number: F04D29/628 ,  A61M1/101 ,  A61M1/1036 ,  F04D13/027 ,  F04D13/04

Abstract: A blood pump for use in CPB and other heart surgeries includes a sterilizable blood pump removably attached to a turbine drive unit. An impeller within the fully enclosed and sterile blood pump moves the blood from the pump inlet to the pump outlet. The pump snaps onto the turbine drive unit and a magnetic coupling between the pump and the drive unit is used to transmit the rotation of a turbine shaft to the pump impeller. The turbine drive unit is preferably a sterilizable unit which may be placed directly in the sterile surgical field. The blood pump with turbine drive allows the blood pump to be placed close to the surgical site and minimizes the length of the tubing required for connecting the pump to the patient.

Abstract translation: 用于CPB和其他心脏手术的血泵包括可移除地连接到涡轮驱动单元的可消毒血液泵。 全封闭和无菌血液泵内的叶轮将血液从泵入口移动到泵出口。 泵吸附在涡轮驱动单元上，泵和驱动单元之间的磁耦合用于将涡轮轴的旋转传递到泵叶轮。 涡轮驱动单元优选是可直接放置在无菌外科手术领域中的可灭菌单元。 具有涡轮驱动器的血泵允许将血泵放置在靠近外科手术部位，并将泵连接到病人所需的管道的长度最小化。

公开(公告)号：US5725357A

公开(公告)日：1998-03-10

申请号：US623760

申请日：1996-03-29

Applicant: Tsugito Nakazeki ,  Hiroyoshi Ito ,  Teruaki Akamatsu

Inventor： Tsugito Nakazeki ,  Hiroyoshi Ito ,  Teruaki Akamatsu

IPC: A61M1/10 ,  F04D13/02 ,  F04D15/00 ,  F04D29/04 ,  F04D29/048 ,  G01F1/80 ,  G05D7/06 ,  G05D16/20 ,  F04B49/00

CPC classification number: F04D29/048 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1036 ,  F04D13/026 ,  F04D13/0666 ,  F04D15/0066 ,  G01F1/80 ,  G05D16/2066 ,  G05D7/0676 ,  F05B2240/515 ,  Y10S415/90

Abstract: In a magnetically suspended type pump, an operating state of the pump can be obtained without using a pressure gauge and a flowmeter. In addition, in the case where the magnetically suspended type pump is applied to a blood pump, in order to reduce the number of connections in a flow path and to avoid thrombus formation, a correlation between current flowing in a motor and flow or a correlation between current flowing in the motor and pressure is obtained in advance, and the speed of rotation of motor is varied by a speed of rotation control circuit in response to an instruction from a CPU circuit, based on the obtained correlation between current and flow or between current and pressure, whereby flow or pressure is controlled.

Abstract translation: 在磁悬浮式泵中，可以在不使用压力计和流量计的情况下获得泵的运行状态。 此外，在将磁悬浮型泵应用于血液泵的情况下，为了减少流路中的连接数量并避免血栓形成，电动机中流动的电流与流量之间的相关性或相关性 在电动机中流动的电流和压力之间是预先获得的，并且响应于来自CPU电路的指令，基于获得的电流和流量之间的相关性，或者获得的电流和流量之间的相关性， 电流和压力，从而控制流量或压力。

公开(公告)号：US5683231A

公开(公告)日：1997-11-04

申请号：US675014

申请日：1996-07-03

Applicant: Tadashi Nakazawa ,  Yoshiyuki Takami ,  Kenzo Makinouchi ,  Yukihiko Nose

Inventor： Tadashi Nakazawa ,  Yoshiyuki Takami ,  Kenzo Makinouchi ,  Yukihiko Nose

IPC: A61M1/10 ,  F04D13/02 ,  F04B17/03

CPC classification number: A61M1/101 ,  A61M1/1036 ,  F04D13/026 ,  F04D13/027 ,  Y10S415/90

Abstract: A blood pump used for heart-lung machines comprising an impeller, a casing having a suction inlet and a delivery outlet and rotatably encasing the impeller, a magnetic driver disposed outside the casing, and a magnetic attraction force adjuster. The impeller has a rotationally symmetric shape, such as a conical shape, is equipped with vanes having a pumping function on the side surface thereof and is also equipped with magnets, such as permanent magnets. The magnetic driver for rotating the impeller in cooperation with the magnets comprises a magnet assembly magnetically connected to the magnets and a rotation driver for rotating the magnet assembly. The magnetic attraction force adjuster adjusts the magnetic attraction force generated between the magnets and the magnet assembly by adjusting the gap between the magnets and the magnet assembly or by adjusting the exciting current of electromagnets when electromagnets are used for the magnet assembly. One of the pivot and pivot bearing for supporting the rotation shaft of the impeller is made of ceramics and the other is made of synthetic resin.

Abstract translation: 一种用于心肺机器的血泵，包括叶轮，具有吸入口和输出出口的壳体，并且可旋转地包围叶轮，设置在壳体外部的磁性驱动器和磁吸引力调节器。 叶轮具有诸如圆锥形的旋转对称形状，在其侧表面上装备有具有泵送功能的叶片，并且还配备有诸如永磁体的磁体。 用于与磁体协作旋转叶轮的磁驱动器包括磁力连接到磁体的磁体组件和用于旋转磁体组件的旋转驱动器。 磁力吸引力调节器通过调节磁体和磁体组件之间的间隙，或者当电磁铁用于磁体组件时，通过调节电磁体的励磁电流来调节磁体和磁体组件之间产生的磁吸引力。 用于支撑叶轮的旋转轴的枢轴和枢转轴承之一由陶瓷制成，另一个由合成树脂制成。

公开(公告)号：US5503615A

公开(公告)日：1996-04-02

申请号：US296479

申请日：1994-08-26

Applicant: Bernard Goldstein

Inventor： Bernard Goldstein

IPC: A61M1/10

CPC classification number: A61M1/101 ,  A61M1/1005 ,  A61M1/1036 ,  A61M2230/06

Abstract: An implantable ventricular assist device is described which has only one moving part. This part consists of a conical rotor with vanes which spiral upward from the base in a direction opposite to the direction of rotation. There are no valves within the device itself, but one or two valves are situated in the conduits connected to it. The device is powered by a constant running electric motor which screws into the base of the rotor housing. The motor is connected to a portable external battery by means of subcutaneous electrical leads.

Abstract translation: 描述了仅具有一个移动部件的可植入心室辅助装置。 该部件由具有叶片的锥形转子组成，叶片沿与旋转方向相反的方向从基座向上螺旋。 设备本身没有阀门，但是一个或两个阀门位于与其连接的管道中。 该装置由一个恒定运行的电动马达驱动，螺旋进入转子壳体的底部。 电机通过皮下电引线连接到便携式外部电池。

公开(公告)号：US5322413A

公开(公告)日：1994-06-21

申请号：US74983

申请日：1993-06-10

Applicant: Pietro Vescovini ,  Nicola Ghelli ,  Ivo Panzani

Inventor： Pietro Vescovini ,  Nicola Ghelli ,  Ivo Panzani

IPC: A61M1/10 ,  F04D13/02 ,  F04D29/04 ,  F04D29/046 ,  F04D29/049 ,  F04D29/42 ,  F01D3/02

CPC classification number: F04D29/049 ,  A61M1/101 ,  A61M1/1036 ,  F04D13/027 ,  F04D29/0467 ,  F04D29/4273 ,  Y10S415/90

Abstract: In a centrifugal pump for liquids, in particular for blood in extracorporeal circulation, comprising a containment body for an impeller having the shape of a disk and comprising magnets inside it and having, on both faces, blades adapted for making contact with the liquid; the containment body has at least one liquid inflow connection, which is connected to ducts for conveying the liquid proximate to the center of the impeller on both sides thereof, and at least one liquid outflow connection; the containment body is shaped so that it can be removably inserted in a seat defined in a fixed base within which there is at least one magnet arranged so as to face the seat and being connected to means adapted for rotating it so as to rotationally entrain the impeller.

Abstract translation: 在用于液体的离心泵中，特别是用于体外循环中的血液的离心泵中，包括用于具有圆盘形状并且在其内部的磁体的叶轮的容纳体，并且在两面上具有适于与液体接触的叶片; 容纳体具有至少一个液体流入连接件，其连接到用于输送靠近叶轮中心两侧的液体的管道和至少一个液体流出连接件; 容纳体的形状使得其可拆卸地插入到限定在固定基座中的座中，在该座中存在至少一个磁体，其布置成面向座椅并且连接到适于旋转的装置，以便旋转夹带 叶轮。

公开(公告)号：US5316440A

公开(公告)日：1994-05-31

申请号：US12247

申请日：1993-02-01

Applicant: Toshihiko Kijima ,  Kunio Horiuchi ,  Hiroyuki Oshiyama

Inventor： Toshihiko Kijima ,  Kunio Horiuchi ,  Hiroyuki Oshiyama

IPC: A61M1/10 ,  F04D13/02 ,  F01D5/12

CPC classification number: A61M1/101 ,  A61M1/1036 ,  F04D13/024 ,  A61M2205/12 ,  Y10S415/90

Abstract: Disclosed is a blood pump apparatus for blood components, comprising a housing forming a substantially cylindrical liquid chamber, an inlet port formed at an upper central portion of the housing and communicating with a source of blood component and the chamber, an outlet port formed in a peripheral portion of the housing and communicating with the chamber, a rotator arranged in the chamber and having an upper cover and a lower shroud, a lower surface of the upper cover being inclined such that an angle .theta. formed by the lower surface of the cover and a central axis of the inlet port is an obtuse angle, and a plurality of grooves being formed radially in the upper surface of the shroud, a projection formed at an upper central portion of the shroud and located immediately below the inlet port, bearing rotatably supporting the rotator with respect to the housing, motor for applying a rotational force to the rotator, and a plurality of liquid paths radially formed between the upper cover and the shroud to substantially uniformly distribute blood from a central portion of the rotator to a peripheral portion thereof. Each of the paths has a cross sectional area substantially constant over the entire length region or gradually diminishing in one direction.

Abstract translation: 本发明公开了一种血液成分的血液泵装置，其特征在于，包括形成大致圆柱形的液体室的壳体，形成在所述壳体的上部中央部并与血液成分和所述腔室连通的入口， 壳体的周边部分并与腔室连通，设置在腔室中并具有上盖和下护罩的旋转器，上盖的下表面倾斜使得由盖的下表面形成的角度θ和 所述入口的中心轴为钝角，并且在所述护罩的上表面径向地形成有多个槽，所述突起形成在所述护罩的上中央部并位于所述入口的正下方， 所述旋转体相对于所述壳体，用于向所述旋转体施加旋转力的马达以及径向形成在所述上部海湾之间的多个液体路径 r和护罩基本均匀地将血液从旋转体的中心部分分配到其周边部分。 每个路径在整个长度区域上具有基本上恒定的横截面积或者在一个方向上逐渐减小。

公开(公告)号：US4643641A

公开(公告)日：1987-02-17

申请号：US648498

申请日：1984-09-10

Applicant: Earl W. Clausen ,  Lloyd C. Hubbard

Inventor： Earl W. Clausen ,  Lloyd C. Hubbard

IPC: A61L2/20 ,  A61M1/10 ,  F04D13/02 ,  F04D29/12 ,  F04D29/20 ,  F16J15/34

CPC classification number: A61M1/101 ,  A61L2/206 ,  A61M1/1025 ,  A61M1/1036 ,  F04D13/026 ,  F04D13/027 ,  F04D29/126 ,  F04D29/20 ,  F16J15/3416 ,  F16J15/344 ,  Y10S415/90

Abstract: A centrifugal blood pump has a face seal between a pump housing wall and a hub of an impeller which provides upon assembly a gas permeable seal at a seal interface surrounding a shaft defining the rotational axis of the impeller. This seal separates a blood pumping chamber from a separate chamber housing lubricants and bearings for impeller rotation. Prior to rotation of the impeller, the blood pump is sterilized by exposure to ethylene oxide gas which passes through the gas permeable seal interface to also sterilize the interior of the bearing chamber in the pump. Upon rotation of the impeller, the seal interface, which is perpendicular to the axis, is converted to a gas and liquid impermeable seal.

Abstract translation: 离心式血泵在泵壳体壁和叶轮的轮毂之间具有面密封，其在组装时在密封界面处提供气体可渗透的密封，围绕限定叶轮的旋转轴线的轴。 该密封将血液泵送室与容纳用于叶轮旋转的润滑剂和轴承的单独的室分开。 在叶轮旋转之前，通过暴露于通过气体渗透密封界面的环氧乙烷气体对血液泵进行灭菌，以对泵中的轴承腔室的内部进行消毒。 在叶轮旋转时，垂直于轴线的密封接口被转换成气体和液体不可渗透的密封。

公开(公告)号：US4589822A

公开(公告)日：1986-05-20

申请号：US628756

申请日：1984-07-09

Applicant: Earl W. Clausen ,  Lloyd C. Hubbard

Inventor： Earl W. Clausen ,  Lloyd C. Hubbard

IPC: A61M1/10 ,  F04D13/02 ,  F04D29/12 ,  F04D29/22 ,  F04D29/28

CPC classification number: A61M1/101 ,  A61M1/1025 ,  A61M1/1036 ,  F04D13/026 ,  F04D13/027 ,  F04D29/126 ,  F04D29/2205 ,  Y10S415/90

Abstract: A centrifugal blood pump has an impeller with a hub, a blade support ring and alternating long and short blades. A tapered seal between a pump housing wall and a hub of an impeller which provides a fluid tight seal interface surrounding a shaft. The long blades of the impeller have rear edges which are closer to the wall than is the seal interface and inner edges which extend from the rear edges to the hub. This provides high flow in the vicinity of the seal interface to enhance heat dissipation from the seal interface.

Abstract translation: 离心式血液泵具有带有轮毂，叶片支撑环和交替的长和短叶片的叶轮。 在泵壳体壁和叶轮的轮毂之间的锥形密封件，其提供围绕轴的流体密封密封接口。 叶轮的长叶片具有比密封接口更靠近壁的后边缘和从后边缘延伸到轮毂的内边缘。 这在密封接口附近提供高流量，以增强从密封接口的散热。