公开(公告)号：US20140172087A1

公开(公告)日：2014-06-19

申请号：US14187615

申请日：2014-02-24

Applicant: David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

Inventor： David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

IPC: A61M1/10 ,  F04D15/00

CPC classification number: A61M1/1001 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/12 ,  A61M2205/3334 ,  F04D15/0066

Abstract: A method is provided of controlling a pump including a electrical motor coupled to a rotor which carries first and second impellers at opposite ends thereof. The method includes: (a) driving the rotor using the motor, so as to circulate fluid from the first impeller through a first fluid circuit, the second impeller, a second fluid circuit, and back to the first impeller; (b) determining a resistance of the first fluid circuit, based on a first motor parameter which is a function of electrical power delivered to the motor; (c) determining a flow rate through the first fluid circuit based on a second motor parameter which is a function of electrical power delivered to the motor; and (d) varying at least one operational parameter of the pump so as to maintain a predetermined relationship between the flow rate and the resistance of the first fluid circuit.

Abstract translation: 提供了一种控制泵的方法，该泵包括耦合到转子的电动机，该转子在其相对端承载第一和第二叶轮。 该方法包括：（a）使用电动机驱动转子，以使来自第一叶轮的流体通过第一流体回路，第二叶轮，第二流体回路循环到第一叶轮; （b）基于作为传送到电动机的电功率的函数的第一电动机参数来确定第一流体回路的电阻; （c）基于作为传送到所述电动机的电功率的函数的第二电动机参数来确定通过所述第一流体回路的流量; 以及（d）改变所述泵的至少一个操作参数，以便保持所述第一流体回路的流量和所述阻力之间的预定关系。

公开(公告)号：US08657874B2

公开(公告)日：2014-02-25

申请号：US12349658

申请日：2009-01-07

Applicant: David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

Inventor： David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

IPC: A61M1/10

CPC classification number: A61M1/1001 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/12 ,  A61M2205/3334 ,  F04D15/0066

Abstract: A method is provided of controlling a pump including a electrical motor coupled to a rotor which carries first and second impellers at opposite ends thereof. The method includes: (a) driving the rotor using the motor, so as to circulate fluid from the first impeller through a first fluid circuit, the second impeller, a second fluid circuit, and back to the first impeller; (b) determining a resistance of the first fluid circuit, based on a first motor parameter; (c) determining a flow rate through the first fluid circuit based on a second motor parameter; and (d) varying at least one operational parameter of the pump so as to maintain a predetermined relationship between the flow rate and the resistance of the first fluid circuit.

Abstract translation: 提供了一种控制泵的方法，该泵包括耦合到转子的电动机，该转子在其相对端承载第一和第二叶轮。 该方法包括：（a）使用电动机驱动转子，以使来自第一叶轮的流体通过第一流体回路，第二叶轮，第二流体回路循环到第一叶轮; （b）基于第一电动机参数确定第一流体回路的电阻; （c）基于第二电动机参数确定通过第一流体回路的流量; 以及（d）改变所述泵的至少一个操作参数，以便保持所述第一流体回路的流量和所述阻力之间的预定关系。

公开(公告)号：US5370509A

公开(公告)日：1994-12-06

申请号：US164027

申请日：1993-12-08

Applicant: Leonard A. R. Golding ,  William A. Smith ,  Warren F. Wade

Inventor： Leonard A. R. Golding ,  William A. Smith ,  Warren F. Wade

IPC: A61M1/10 ,  F04D1/04 ,  F04D3/02 ,  F04D13/06 ,  F04D29/04 ,  F04D29/041 ,  F04D29/046 ,  F04D29/047 ,  F04B17/00

CPC classification number: F04D29/047 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1031 ,  F04D1/04 ,  F04D13/0673 ,  F04D29/0413 ,  F04D29/0467 ,  F04D3/02 ,  Y10S415/90

Abstract: A sealless centrifugal blood pump is provided in which a rotatable impeller is supported in a pump housing by fluid bearings during operation. Rotational movement of the impeller is accomplished with an inverted motor for magnetically driving of the impeller and maintenance of the axial running position of the impeller relative to the housing. In an alternative embodiment, the axis of the rotor housing is radially displaced relative to the axes of drive element of the motor and the motor housing.

Abstract translation: 提供了一种无缝离心血泵，其中可旋转的叶轮在操作期间通过流体轴承支撑在泵壳体中。 叶轮的旋转运动通过用于驱动叶轮的反转电动机和相对于壳体维持叶轮的轴向运动位置来实现。 在替代实施例中，转子壳体的轴线相对于电机和电动机壳体的驱动元件的轴线径向移位。

公开(公告)号：US07645225B2

公开(公告)日：2010-01-12

申请号：US10333759

申请日：2001-03-19

Applicant: Alexander Medvedev ,  Leonard A. R. Golding ,  Alexander Massiello

Inventor： Alexander Medvedev ,  Leonard A. R. Golding ,  Alexander Massiello

IPC: A61M1/12

CPC classification number: A61M1/101 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/3334 ,  A61M2205/3365

Abstract: In a left ventricular assist device (LVAD) a rotodynamic blood pump (10) is powered by a brushless DC motor (12). A power supply (14) supplies power to the motor (12). Three feedback channels, one for each of voltage, current, and motor speed lead to a microcontroller or microprocessor (18). The three feedback waveforms are analyzed, and from these waveforms, motor input power, patient heart rate, current pump flow rate, and systemic pressure are determined. The microprocessor (18) then calculates a desired flow rate proportional to the patient heart rate. The microprocessor communicates a new power output to a commutation circuit (16), which regulates power to the motor (12). The pump (10) also includes safety checks that are prioritized over desired pump flow. These include prevention of ventricular suction, low pulsatility, minimum and maximum pump speed, minimum speed-relative pump flow, minimum absolute pump flow, minimum and maximum motor input power.

Abstract translation: 在左心室辅助装置（LVAD）中，旋转动力血泵（10）由无刷DC马达（12）供电。 电源（14）向马达（12）供电。 三个反馈通道，一个用于每个电压，电流和电机速度，导致微控制器或微处理器（18）。 分析三个反馈波形，并从这些波形中确定电机输入功率，患者心率，电流泵流量和全身压力。 微处理器（18）然后计算与患者心率成比例的期望流率。 微处理器将新的功率输出传送到换向电路（16），该换向电路调节电动机（12）的功率。 泵（10）还包括优先于所需泵流量的安全检查。 这些包括预防心室抽吸，低搏动，最小和最大泵速，最小速度相对泵流量，最小绝对泵流量，最小和最大电机输入功率。

公开(公告)号：US5324177A

公开(公告)日：1994-06-28

申请号：US695312

申请日：1991-05-03

Applicant: Leonard A. R. Golding ,  William A. Smith

Inventor： Leonard A. R. Golding ,  William A. Smith

IPC: A61M1/10 ,  F04D1/04 ,  F04D3/02 ,  F04D13/06 ,  F04D29/04 ,  F04D29/041 ,  F04D29/046 ,  F04D29/047 ,  F04B17/00

CPC classification number: F04D29/047 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1031 ,  F04D1/04 ,  F04D13/0673 ,  F04D29/0413 ,  F04D29/0467 ,  F04D3/02 ,  Y10S415/90

Abstract: A sealless centrifugal blood pump is provided in which a rotatable impeller is supported in a pump housing by fluid bearings during operation. Rotational movement of the impeller is accomplished with an inverted motor for magnetically driving of the impeller and maintenance of the axial running position of the impeller relative to the housing. In an alternative embodiment, the axis of the rotor housing is radially displaced relative to the axes of drive element of the motor and the motor housing.

Abstract translation: 提供了一种无缝离心血泵，其中可旋转的叶轮在操作期间通过流体轴承支撑在泵壳体中。 叶轮的旋转运动通过用于驱动叶轮的反转电动机和相对于壳体维持叶轮的轴向运动位置来实现。 在替代实施例中，转子壳体的轴线相对于电机和电动机壳体的驱动元件的轴线径向移位。

公开(公告)号：US08210829B2

公开(公告)日：2012-07-03

申请号：US12720953

申请日：2010-03-10

Applicant: David Horvath ,  Leonard A. R. Golding ,  Alex Massiello

Inventor： David Horvath ,  Leonard A. R. Golding ,  Alex Massiello

IPC: F04D27/00 ,  F04D29/042 ,  F04D29/40 ,  A61M1/10

CPC classification number: F04D13/0633 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/12 ,  A61M1/122 ,  A61M2205/3334 ,  F04D1/06 ,  F04D13/06 ,  F04D13/064 ,  F04D13/14 ,  F04D15/0033 ,  F04D29/042

Abstract: A pump (10) includes a housing, a stator (20) supported in the housing, and a rotor assembly (30). The rotor assembly (30) includes a rotor (32) supported in the housing for rotation relative to the stator (20) about an axis (12). The rotor assembly (30) also includes a first impeller (34) operatively coupled to a first axial end of the rotor (32) for rotation with the rotor about the axis (12). The rotor assembly further includes a second impeller (36) operatively coupled to a second axial end of the rotor (32), opposite the first axial end, for rotation with the rotor about the axis (12). The rotor assembly (30) is movable along the axis (12) relative to the housing to adjust hydraulic performance characteristics of the pump (10).

Abstract translation: 泵（10）包括壳体，支撑在壳体中的定子（20）和转子组件（30）。 转子组件（30）包括支撑在壳体中以绕轴线（12）相对于定子（20）旋转的转子（32）。 转子组件（30）还包括可操作地联接到转子（32）的第一轴向端部的第一叶轮（34），用于使转子围绕轴线（12）旋转。 转子组件还包括可操作地联接到转子（32）的与第一轴向端相对的第二轴向端的第二叶轮（36），用于使转子绕轴线（12）旋转。 转子组件（30）可相对于壳体沿着轴线（12）移动，以调节泵（10）的液压性能特性。

公开(公告)号：US09821098B2

公开(公告)日：2017-11-21

申请号：US14187615

申请日：2014-02-24

Applicant: David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

Inventor： David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

IPC: A61M1/10 ,  F04D15/00 ,  A61M1/12

CPC classification number: A61M1/1001 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/12 ,  A61M2205/3334 ,  F04D15/0066

Abstract: A method is provided of controlling a pump including a electrical motor coupled to a rotor which carries first and second impellers at opposite ends thereof. The method includes: (a) driving the rotor using the motor, so as to circulate fluid from the first impeller through a first fluid circuit, the second impeller, a second fluid circuit, and back to the first impeller; (b) determining a resistance of the first fluid circuit, based on a first motor parameter which is a function of electrical power delivered to the motor; (c) determining a flow rate through the first fluid circuit based on a second motor parameter which is a function of electrical power delivered to the motor; and (d) varying at least one operational parameter of the pump so as to maintain a predetermined relationship between the flow rate and the resistance of the first fluid circuit.

公开(公告)号：US20100174231A1

公开(公告)日：2010-07-08

申请号：US12349658

申请日：2009-01-07

Applicant: David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

Inventor： David Horvath ,  Alex Massiello ,  Leonard A. R. Golding ,  Barry Kuban

IPC: A61M31/00

CPC classification number: A61M1/1001 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/12 ,  A61M2205/3334 ,  F04D15/0066

Abstract: A method is provided of controlling a pump including a electrical motor coupled to a rotor which carries first and second impellers at opposite ends thereof. The method includes: (a) driving the rotor using the motor, so as to circulate fluid from the first impeller through a first fluid circuit, the second impeller, a second fluid circuit, and back to the first impeller; (b) determining a resistance of the first fluid circuit, based on a first motor parameter; (c) determining a flow rate through the first fluid circuit based on a second motor parameter; and (d) varying at least one operational parameter of the pump so as to maintain a predetermined relationship between the flow rate and the resistance of the first fluid circuit.

Abstract translation: 提供了一种控制泵的方法，该泵包括耦合到转子的电动机，该转子在其相对端承载第一和第二叶轮。 该方法包括：（a）使用电动机驱动转子，以使来自第一叶轮的流体通过第一流体回路，第二叶轮，第二流体回路循环到第一叶轮; （b）基于第一电动机参数确定第一流体回路的电阻; （c）基于第二电动机参数确定通过第一流体回路的流量; 以及（d）改变所述泵的至少一个操作参数，以便保持所述第一流体回路的流量和所述阻力之间的预定关系。

公开(公告)号：US07435059B2

公开(公告)日：2008-10-14

申请号：US10378444

申请日：2003-03-03

Applicant: William A. Smith ,  Leonard A. R. Golding

Inventor： William A. Smith ,  Leonard A. R. Golding

IPC: F04B49/00

CPC classification number: A61M1/1031 ,  A61M1/101 ,  A61M1/1036 ,  A61M1/1075 ,  A61M1/1086 ,  A61M1/122 ,  A61M1/127 ,  A61M2205/3334 ,  A61M2205/8243

Abstract: A system for pumping blood to assist or assume the cardiac function of a patient is characterized by a blood pump that exhibits a steep performance curve such that only small changes in pump flow occur for large changes in differential pressure across the pump. The pump therefore exhibits flow-limiting characteristics to protect the physiological system against harmful flow rates or pressures. Pump flow may also be limited by controlling the current provided to a driver from a power supply or by suitable restrictions within or external to the pump housing.

Abstract translation: 用于抽吸血液以辅助或承担患者心脏功能的系统的特征在于具有陡峭性能曲线的血泵，使得只有小的泵浦流量的变化才能发生，因为泵的差压的大的变化。 因此，泵具有流动限制特性，以保护生理系统免受有害的流速或压力。 泵流量还可以通过控制从电源提供给驾驶员的电流或通过在泵壳体内部或外部的适当限制来限制。

公开(公告)号：US07189260B2

公开(公告)日：2007-03-13

申请号：US10333760

申请日：2001-03-19

Applicant: David Horvath ,  Leonard A. R. Golding ,  William A. Smith

Inventor： David Horvath ,  Leonard A. R. Golding ,  William A. Smith

IPC: A61M1/10

CPC classification number: F04D29/2211 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/122 ,  A61M1/127 ,  F04D13/0646

Abstract: In a centrifugal flow blood pump, usable in left ventricular assist applications, blood is pumped from an inlet (16) to an outlet (22) by a primary impeller (18). A portion of the blood that enters the pump follows a secondary channel (24) where a secondary impeller (70) routes the blood to lubricate a bearing between an impeller assembly (14) and a post formed by a component of the pump housing. The unique shape of the secondary impeller (70) prevents blood stagnation and provides for a well-washed fluid bearing.

Abstract translation: 在可用于左心室辅助应用的离心流血泵中，血液通过主叶轮（18）从入口（16）泵送到出口（22）。 进入泵的一部分血液遵循辅助通道（24），其中次级叶轮（70）引导血液以润滑叶轮组件（14）和由泵壳体的部件形成的柱之间的轴承。 二次叶轮（70）的独特形状防止血液滞留，并提供良好洗涤的流体轴承。