公开(公告)号：US20160235898A1

公开(公告)日：2016-08-18

申请号：US15041987

申请日：2016-02-11

Applicant: Thoratec Corporation

Inventor： Masamichi Yanai ,  Shunzhou Yu ,  Tao Zhang

IPC: A61M1/10 ,  F04D13/06 ,  F04D1/00

CPC classification number: A61M1/1029 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/3334 ,  F04D13/064 ,  F04D13/0666 ,  F04D29/047 ,  F04D29/048

Abstract: A blood pump system includes a pump housing and an impeller for rotating in a pump chamber within the housing. The impeller has a first side and a second side opposite the first side. The system includes a stator having drive coils for applying a torque to the impeller and at least one bearing mechanism for suspending the impeller within the pump chamber. The system includes a position control mechanism for moving the impeller in an axial direction within the pump chamber to adjust a size of a first gap and a size of a second gap, thereby controlling a washout rate at each of the first gap and the second gap. The first gap is defined by a distance between the first side and the housing and the second gap is defined by a distance between the second side and the pump housing.

Abstract translation: 血液泵系统包括泵壳体和用于在壳体内的泵室中旋转的叶轮。 叶轮具有与第一侧相对的第一侧和第二侧。 该系统包括具有用于向叶轮施加扭矩的驱动线圈和用于将叶轮悬挂在泵室内的至少一个轴承机构的定子。 该系统包括位置控制机构，用于在泵室内沿轴向移动叶轮以调节第一间隙的尺寸和第二间隙的尺寸，从而控制第一间隙和第二间隙中的每一个处的冲洗速率 。 第一间隙由第一侧和壳体之间的距离限定，第二间隙由第二侧和泵壳之间的距离限定。

公开(公告)号：US08968174B2

公开(公告)日：2015-03-03

申请号：US13742469

申请日：2013-01-16

Applicant: Thoratec Corporation

Inventor： Masamichi Yanai ,  Tao Zhang

IPC: A61M1/12 ,  A61M1/10

CPC classification number: A61M1/1086 ,  A61M1/101 ,  A61M1/122 ,  A61M1/127 ,  A61M2205/17

Abstract: A implantable pump system comprises an implantable pump motor and an external unit. An inverter comprises respective phases couple to the motor via a cable with redundant conductors for each phase. A controller receives power measurements for all the redundant conductors, which are combined and compared in order to detect failures in the non-redundant components within the motor and windings.

Abstract translation: 可植入泵系统包括可植入泵电动机和外部单元。 逆变器包括通过具有用于每个相的冗余导线的电缆耦合到电动机的各相。 控制器接收所有冗余导体的功率测量值，这些导线被组合和比较，以便检测电机和绕组内非冗余组件的故障。

公开(公告)号：US20140200389A1

公开(公告)日：2014-07-17

申请号：US13742469

申请日：2013-01-16

Applicant: THORATEC CORPORATION

Inventor： Masamichi Yanai ,  Tao Zhang

IPC: A61M1/10

CPC classification number: A61M1/1086 ,  A61M1/101 ,  A61M1/122 ,  A61M1/127 ,  A61M2205/17

Abstract: A implantable pump system comprises an implantable pump motor and an external unit. An inverter comprises respective phases couple to the motor via a cable with redundant conductors for each phase. A controller receives power measurements for all the redundant conductors, which are combined and compared in order to detect failures in the non-redundant components within the motor and windings.

Abstract translation: 可植入泵系统包括可植入泵电动机和外部单元。 逆变器包括通过具有用于每个相的冗余导线的电缆耦合到电动机的各相。 控制器接收所有冗余导体的功率测量值，这些导线被组合和比较，以便检测电机和绕组内非冗余组件的故障。

公开(公告)号：US08834345B2

公开(公告)日：2014-09-16

申请号：US13742478

申请日：2013-01-16

Applicant: Thoratec Corporation

Inventor： Masamichi Yanai ,  Tao Zhang ,  Jeffrey G. Houdek

IPC: A61M1/10

CPC classification number: A61M1/101 ,  A61M1/1012 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/3334 ,  F04D15/0088 ,  F04D29/428 ,  F05D2270/335

Abstract: A centrifugal pump system for a cardiac assist device employs a disc-shaped impeller having an outer circumference adapted to be rotatably driven in a pumping direction. A pump housing has a pumping chamber receiving the impeller, wherein the pumping chamber defines an outlet volute having a separation edge spaced from the outer circumference to provide a limited backflow path coinciding with the pumping direction. A motor drives the impeller in response to a voltage provided to the motor. A current sensor measures current flow within the motor in response to the voltage. A controller estimates a pump flow rate in response to a predetermined relation between the measured current and the pump flow rate, wherein the predetermined relation includes a positive slope from a predetermined backflow rate to a zero pump flow rate.

Abstract translation: 用于心脏辅助装置的离心泵系统采用圆盘形叶轮，其具有适于沿泵送方向可旋转地驱动的外周。 泵壳体具有容纳叶轮的泵送室，其中泵送室限定具有与外圆周间隔开的分离边缘的出口蜗壳，以提供与泵送方向一致的有限的回流路径。 电机根据提供给电机的电压来驱动叶轮。 电流传感器响应于电压来测量电动机内的电流。 控制器响应于测量的电流和泵流量之间的预定关系来估计泵流量，其中预定关系包括从预定回流速率到零泵流量的正斜率。

公开(公告)号：US20140200390A1

公开(公告)日：2014-07-17

申请号：US13742478

申请日：2013-01-16

Applicant: THORATEC CORPORATION

Inventor： Masamichi Yanai ,  Tao Zhang ,  Jeffrey G. Houdek

IPC: A61M1/10

CPC classification number: A61M1/101 ,  A61M1/1012 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/3334 ,  F04D15/0088 ,  F04D29/428 ,  F05D2270/335

Abstract: A centrifugal pump system for a cardiac assist device employs a disc-shaped impeller having an outer circumference adapted to be rotatably driven in a pumping direction. A pump housing has a pumping chamber receiving the impeller, wherein the pumping chamber defines an outlet volute having a separation edge spaced from the outer circumference to provide a limited backflow path coinciding with the pumping direction. A motor drives the impeller in response to a voltage provided to the motor. A current sensor measures current flow within the motor in response to the voltage. A controller estimates a pump flow rate in response to a predetermined relation between the measured current and the pump flow rate, wherein the predetermined relation includes a positive slope from a predetermined backflow rate to a zero pump flow rate.

Abstract translation: 用于心脏辅助装置的离心泵系统采用圆盘形叶轮，其具有适于沿泵送方向可旋转地驱动的外周。 泵壳体具有容纳叶轮的泵送室，其中泵送室限定具有与外圆周间隔开的分离边缘的出口蜗壳，以提供与泵送方向一致的有限的回流路径。 电机根据提供给电机的电压来驱动叶轮。 电流传感器响应于电压来测量电动机内的电流。 控制器响应于测量的电流和泵流量之间的预定关系来估计泵流量，其中预定关系包括从预定回流速率到零泵流量的正斜率。