公开(公告)号：US20140135861A1

公开(公告)日：2014-05-15

申请号：US14162543

申请日：2014-01-23

Applicant: Cardiac Pacemakers, Inc.

Inventor： Scott R. Stubbs ,  James O. Gilkerson ,  Diane Schuster

IPC: A61N1/39

CPC classification number: A61N1/3931 ,  A61N1/3688 ,  A61N1/37 ,  A61N1/3718

Abstract: Systems and methods for arrhythmia therapy in MRI environments are disclosed. Various systems disclosed utilize ATP therapy rather than ventricular shocks when patients are subjected to electromagnetic fields in an MRI scanner bore and shock therapy is not available. As the patient is moved out from within the scanner bore and away from the MRI scanner, the magnetic fields diminish in strength eventually allowing a high voltage capacitor within the IMD to charge if necessary. The system may detect when the electromagnetic fields no longer interfere with the shock therapy and will transition the IMD back to a normal operational mode where shock therapy can be delivered. Then, if the arrhythmia still exists, the system will carry out all of the system's prescribed operations, including the delivery of electric shocks to treat the arrhythmia.

Abstract translation: 公开了MRI环境中心律失常治疗的系统和方法。 所公开的各种系统利用ATP治疗而不是心室休克，当患者在MRI扫描器孔中经受电磁场并且不能使用休克疗法时。 当患者从扫描仪孔内移出并远离MRI扫描仪时，磁场的强度减弱，最终允许IMD内的高电压电容器根据需要进行充电。 该系统可以检测何时电磁场不再干扰休克疗法，并将IMD转移回正常的操作模式，其中可以进行休克疗法。 那么，如果心律失常仍然存在，系统将执行系统的所有规定的操作，包括交付电击治疗心律失常。

公开(公告)号：US09561378B2

公开(公告)日：2017-02-07

申请号：US14053442

申请日：2013-10-14

Applicant: Cardiac Pacemakers, Inc.

Inventor： Scott R. Stubbs ,  Kevin G. Wika

IPC: A61N1/37 ,  A61N1/39

CPC classification number: A61N1/3712 ,  A61N1/371 ,  A61N1/3718 ,  A61N1/3943

Abstract: Energy delivered from an implantable medical device to stimulate tissue within a patient's body is controlled. An electrical signal used to stimulate the tissue is changed from a first energy state to a second energy state during a magnetic resonance imaging (MRI) scan. The energy delivered is maintained at the second energy state after the MRI scan. A capture threshold of the tissue is then measured, and the energy delivered to the tissue is adjusted based on the measured capture threshold of the tissue.

Abstract translation: 从植入式医疗装置传递的能量可刺激患者身体内的组织被控制。 用于刺激组织的电信号在磁共振成像（MRI）扫描期间从第一能量状态改变到第二能量状态。 在MRI扫描后，输送的能量保持在第二能量状态。 然后测量组织的捕获阈值，并且基于所测量的组织的捕获阈值来调整输送到组织的能量。

公开(公告)号：US08977356B2

公开(公告)日：2015-03-10

申请号：US14162543

申请日：2014-01-23

Applicant: Cardiac Pacemakers, Inc.

Inventor： Scott R. Stubbs ,  James O. Gilkerson ,  Diane Schuster

IPC: A61N1/00 ,  A61N1/39 ,  A61N1/37 ,  A61N1/368

CPC classification number: A61N1/3931 ,  A61N1/3688 ,  A61N1/37 ,  A61N1/3718

Abstract: Systems and methods for arrhythmia therapy in MRI environments are disclosed. Various systems disclosed utilize ATP therapy rather than ventricular shocks when patients are subjected to electromagnetic fields in an MRI scanner bore and shock therapy is not available. As the patient is moved out from within the scanner bore and away from the MRI scanner, the magnetic fields diminish in strength eventually allowing a high voltage capacitor within the IMD to charge if necessary. The system may detect when the electromagnetic fields no longer interfere with the shock therapy and will transition the IMD back to a normal operational mode where shock therapy can be delivered. Then, if the arrhythmia still exists, the system will carry out all of the system's prescribed operations, including the delivery of electric shocks to treat the arrhythmia.

Abstract translation: 公开了MRI环境中心律失常治疗的系统和方法。 所公开的各种系统利用ATP治疗而不是心室休克，当患者在MRI扫描器孔中经受电磁场并且不能使用休克疗法时。 当患者从扫描仪孔内移出并远离MRI扫描仪时，磁场的强度减弱，最终允许IMD内的高电压电容器根据需要进行充电。 该系统可以检测何时电磁场不再干扰休克疗法，并将IMD转移回正常的操作模式，其中可以进行休克疗法。 那么，如果心律失常仍然存在，系统将执行系统的所有规定的操作，包括交付电击治疗心律失常。

公开(公告)号：US09381371B2

公开(公告)日：2016-07-05

申请号：US14058251

申请日：2013-10-20

Applicant: Cardiac Pacemakers, Inc.

Inventor： Scott R. Stubbs ,  James O. Gilkerson ,  Hiten J. Doshi ,  Diane Schuster

IPC: A61N1/37 ,  A61N1/39 ,  A61N1/05 ,  A61N1/08

CPC classification number: A61N1/3962 ,  A61N1/056 ,  A61N1/086 ,  A61N1/37 ,  A61N1/3718

Abstract: An implantable medical device (IMD) includes a lead having one or more sensing electrodes and one or more therapy delivery electrodes, and a sensor configured to detect the presence of static and time-varying scan fields in a magnetic resonance imaging (MRI) environment. A controller, in electrical communication with the lead and the sensor, is configured to process signals related to tachycardia events sensed via the one or more sensing electrodes and to deliver pacing and shock therapy signals via the one or more therapy delivery electrodes. The controller compares the sensed static and time-varying scan fields to static and time-varying scan field thresholds. The controller controls delivery of anti-tachycardia pacing and shock therapy signals as a function of the detected tachycardia events, the comparison of the sensed static scan field to the static scan field threshold, and the comparison of the time-varying scan fields to the time-varying scan field thresholds.

公开(公告)号：US09037232B2

公开(公告)日：2015-05-19

申请号：US14456531

申请日：2014-08-11

Applicant: Cardiac Pacemakers, Inc.

Inventor： James O. Gilkerson ,  Vickie L. Conley ,  Scott R. Stubbs ,  Douglas J. Lang

IPC: A61N1/39 ,  A61N1/372

CPC classification number: A61N1/3987 ,  A61N1/37247 ,  A61N1/37252 ,  A61N1/3925

Abstract: A system and method of enabling detection enhancements selected from a plurality of detection enhancements. In a system having a plurality of clinical rhythms, including a first clinical rhythm, where each of the detection enhancements is associated with the clinical rhythms, the first clinical rhythm is selected. The first clinical rhythm is associated with first and second detection enhancements. When the first clinical rhythm is selected, parameters of the first and second detection enhancements are set automatically. A determination is made as to whether changes are to be made to the parameters. If so, one or more of the parameters are modified under user control.

公开(公告)号：US08653930B2

公开(公告)日：2014-02-18

申请号：US13769443

申请日：2013-02-18

Applicant: Cardiac Pacemakers, Inc.

Inventor： Jeffrey E. Stahmann ,  Scott R. Stubbs ,  Arthur J. Foster

IPC: H01F27/24

CPC classification number: H01F41/00 ,  H01F1/344 ,  H01F3/02 ,  H01F27/245 ,  H01F2003/106 ,  Y10T29/4902

Abstract: This document discusses, among other things, an inductive component that can include a core having two portions: (1) a first portion composed of a first material having a first magnetic saturation level; and (2) a second portion composed of a second material selected to provide inductance for the inductive component when an external magnetic field is greater than the first magnetic saturation level. In an example, the first portion can be composed of a material having a relatively low magnetic saturation level (e.g., a ferrite), and the second portion can be composed of a material having a relatively high magnetic saturation level (e.g., a high permeability iron alloy).

Abstract translation: 本文件尤其涉及可包括具有两部分的芯的电感元件：（1）由具有第一磁饱和电平的第一材料组成的第一部分; 和（2）由外部磁场大于第一磁饱和度的第二材料组成的第二部分，该第二材料被选择为提供电感元件的电感。 在一个示例中，第一部分可以由具有相对低的磁饱和度的材料（例如，铁氧体）组成，并且第二部分可以由具有较高磁饱和度的材料（例如，高磁导率 铁合金）。

公开(公告)号：US20140046392A1

公开(公告)日：2014-02-13

申请号：US14053442

申请日：2013-10-14

Applicant: Cardiac Pacemakers, Inc.

Inventor： Scott R. Stubbs ,  Kevin G. Wika

IPC: A61N1/37 ,  A61N1/39

CPC classification number: A61N1/3712 ,  A61N1/371 ,  A61N1/3718 ,  A61N1/3943

Abstract: Energy delivered from an implantable medical device to stimulate tissue within a patient's body is controlled. An electrical signal used to stimulate the tissue is changed from a first energy state to a second energy state during a magnetic resonance imaging (MRI) scan. The energy delivered is maintained at the second energy state after the MRI scan. A capture threshold of the tissue is then measured, and the energy delivered to the tissue is adjusted based on the measured capture threshold of the tissue.

Abstract translation: 从植入式医疗装置传递的能量可刺激患者身体内的组织被控制。 用于刺激组织的电信号在磁共振成像（MRI）扫描期间从第一能量状态改变到第二能量状态。 在MRI扫描后，输送的能量保持在第二能量状态。 然后测量组织的捕获阈值，并且基于所测量的组织的捕获阈值来调整输送到组织的能量。

公开(公告)号：US20140046390A1

公开(公告)日：2014-02-13

申请号：US14058251

申请日：2013-10-20

Applicant: Cardiac Pacemakers, Inc.

Inventor： Scott R. Stubbs ,  James O. Gilkerson ,  Hiten J. Doshi ,  Diane Schuster

IPC: A61N1/39 ,  A61N1/37

CPC classification number: A61N1/3962 ,  A61N1/056 ,  A61N1/086 ,  A61N1/37 ,  A61N1/3718

Abstract: An implantable medical device (IMD) includes a lead having one or more sensing electrodes and one or more therapy delivery electrodes, and a sensor configured to detect the presence of static and time-varying scan fields in a magnetic resonance imaging (MRI) environment. A controller, in electrical communication with the lead and the sensor, is configured to process signals related to tachycardia events sensed via the one or more sensing electrodes and to deliver pacing and shock therapy signals via the one or more therapy delivery electrodes. The controller compares the sensed static and time-varying scan fields to static and time-varying scan field thresholds. The controller controls delivery of anti-tachycardia pacing and shock therapy signals as a function of the detected tachycardia events, the comparison of the sensed static scan field to the static scan field threshold, and the comparison of the time-varying scan fields to the time-varying scan field thresholds.

Abstract translation: 可植入医疗装置（IMD）包括具有一个或多个感测电极和一个或多个治疗递送电极的引线，以及配置成检测磁共振成像（MRI）环境中静态和时变扫描场的存在的传感器。 与引线和传感器电连通的控制器被配置为处理与通过一个或多个感测电极感测的心动过速相关的信号，并且经由一个或多个治疗传递电极输送起搏和休克治疗信号。 控制器将感测到的静态和时变扫描场与静态和时变扫描场阈值进行比较。 控制器控制作为检测到的心动过速事件的函数的抗心动过速起搏和休克治疗信号的传递，感测的静态扫描场与静态扫描场阈值的比较，以及时变扫描场与时间的比较 - 扫描场阈值变化。

公开(公告)号：US20140350619A1

公开(公告)日：2014-11-27

申请号：US14456531

申请日：2014-08-11

Applicant: Cardiac Pacemakers, Inc.

Inventor： James O. Gilkerson ,  Vickie L. Conley ,  Scott R. Stubbs ,  Douglas J. Lang

IPC: A61N1/39

CPC classification number: A61N1/3987 ,  A61N1/37247 ,  A61N1/37252 ,  A61N1/3925

Abstract: A system and method of enabling detection enhancements selected from a plurality of detection enhancements. In a system having a plurality of clinical rhythms, including a first clinical rhythm, where each of the detection enhancements is associated with the clinical rhythms, the first clinical rhythm is selected. The first clinical rhythm is associated with first and second detection enhancements. When the first clinical rhythm is selected, parameters of the first and second detection enhancements are set automatically. A determination is made as to whether changes are to be made to the parameters. If so, one or more of the parameters are modified under user control.

Abstract translation: 一种启用从多个检测增强中选择的检测增强的系统和方法。 在具有多个临床节律的系统中，包括第一临床节律，其中每个检测增强与临床节律相关联，选择第一临床节律。 第一种临床节律与第一和第二检测增强有关。 当选择第一临床节律时，自动设置第一和第二检测增强的参数。 确定是否对参数进行改变。 如果是这样，则在用户控制下修改一个或多个参数。

公开(公告)号：US20130152380A1

公开(公告)日：2013-06-20

申请号：US13769443

申请日：2013-02-18

Applicant: Cardiac Pacemakers, Inc.

Inventor： Jeffrey E. Stahmann ,  Scott R. Stubbs ,  Arthur Foster

IPC: H01F41/00

CPC classification number: H01F41/00 ,  H01F1/344 ,  H01F3/02 ,  H01F27/245 ,  H01F2003/106 ,  Y10T29/4902

Abstract: This document discusses, among other things, an inductive component that can include a core having two portions: (1) a first portion composed of a first material having a first magnetic saturation level; and (2) a second portion composed of a second material selected to provide inductance for the inductive component when an external magnetic field is greater than the first magnetic saturation level. In an example, the first portion can be composed of a material having a relatively low magnetic saturation level (e.g., a ferrite), and the second portion can be composed of a material having a relatively high magnetic saturation level (e.g., a high permeability iron alloy).

Abstract translation: 本文件尤其涉及可包括具有两部分的芯的电感元件：（1）由具有第一磁饱和电平的第一材料组成的第一部分; 和（2）由外部磁场大于第一磁饱和度的第二材料组成的第二部分，该第二材料被选择为提供电感元件的电感。 在一个示例中，第一部分可以由具有相对低的磁饱和度的材料（例如，铁氧体）组成，并且第二部分可以由具有较高磁饱和度的材料（例如，高磁导率 铁合金）。