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    CONTROL OF EXTERNALLY INDUCED CURRENT IN AN IMPLANTABLE PULSE GENERATOR
    21.
    发明申请
    CONTROL OF EXTERNALLY INDUCED CURRENT IN AN IMPLANTABLE PULSE GENERATOR 审中-公开
    外来脉冲发生器中外部感应电流的控制

    公开(公告)号：WO02083236A3

    公开(公告)日：2003-05-30

    申请号：PCT/US0204011

    申请日：2002-02-11

    Applicant: MEDTRONIC INC

    Inventor： HRDLICKA GREGORY A ,  GRABINGER SCOTT ,  STEIN MARC T ,  MUELLER DAVID ,  WESSELINK WILEM

    IPC: A61N1/08 ,  A61N1/32 ,  A61N1/37 ,  A61N1/375

    CPC classification number: A61N1/3754 ,  A61N1/08 ,  A61N1/32 ,  A61N1/3718

    Abstract: The present invention takes teh form of a current limiting apparatus and method for limiting current flow, induced whin thelevel of an external signal is greater than an external signal threshold signal level, in a conductive loop formed by a medical device implanted within living orgaism having electrically excitable tissue. The system includes an implantable pulse generator (IPG) system having a housing, sa signal generator disposed int he housing that generates an electrical signal, and at least one lead extending from the housing to convey electrical signal to the patient. To limit the induced current flow, the IPG includes current limiting componentry, an imedance increasing element, and/or alternating curretn blocking elements. These components provide an alternating current impedance path to the electrical ground from a lead coupled to the capacitive element. Also disclosed are techniques for reducing the effective surface area of the current inducing loop caused bz the IPG system.

    Abstract translation: 本发明采用限制电流流动的限流装置和方法，在外部信号的电平大于外部信号阈值信号电平的导电环路中形成的电流限制装置和方法，所述导电环路由植入在具有电 可兴奋组织 该系统包括具有壳体的可植入脉冲发生器（IPG）系统，其中设置在壳体上的信号发生器，其产生电信号，以及至少一个引线，其从壳体延伸以将电信号传送到患者。 为了限制感应电流，IPG包括限流组件，增加元件和/或交替阻塞元件。 这些部件提供从耦合到电容元件的引线到电接地的交流阻抗路径。 还公开了用于减少引起IPG系统的电流感应环路的有效表面积的技术。

    APPARATUS AND METHOD FOR SHUNTING INDUCED CURRENTS IN AN ELECTRICAL LEAD
    22.
    发明申请
    APPARATUS AND METHOD FOR SHUNTING INDUCED CURRENTS IN AN ELECTRICAL LEAD 审中-公开
    用于在电气引线中分离感应电流的装置和方法

    公开(公告)号：WO03063946A8

    公开(公告)日：2005-04-28

    申请号：PCT/US0301892

    申请日：2003-01-22

    Applicant: MEDTRONIC INC

    Inventor： ZEIJLEMAKER VOLKERT A ,  KALIN RON ,  HRDLICKA GREGORY A ,  CHO YONG KYUN ,  REINKE JAMES D ,  FOERSTER LAURIE D

    IPC: A61N20060101 ,  A61N1/05 ,  A61N1/362 ,  A61N1/372 ,  A61N1/39

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

    Abstract: An electrical lead includes an elongate body having a proximal end portion and a distal end portion, a first electrode disposed adjacent and joined to the distal end portion of the elongate body. Current flow within the first electrode is limited when a predetermined condition occurs, such as the generation of an electromagnetic field having a predetermined frequency range. The medical electrical lead may further comprise one or more second electrodes disposed adjacent the first electrode and joined to the elongate body to shunt current to body tissue when the predetermined condition occurs.

    Abstract translation: 电引线包括具有近端部分和远端部分的细长主体，与细长主体的远端部分相邻并连接的第一电极。 当预定条件发生时，例如产生具有预定频率范围的电磁场，第一电极内的电流被限制。 医疗电引线还可以包括一个或多个邻近第一电极设置的第二电极，并且在预定条件发生时连接到细长体以将电流分流到身体组织。

    MEDICAL IMPLANTABLE SYSTEM FOR REDUCING MAGNETIC RESONANCE EFFECTS
    24.
    发明申请
    MEDICAL IMPLANTABLE SYSTEM FOR REDUCING MAGNETIC RESONANCE EFFECTS 审中-公开
    减少磁共振效应的医疗植入系统

    公开(公告)号：WO03063956A2

    公开(公告)日：2003-08-07

    申请号：PCT/US0302258

    申请日：2003-01-27

    Applicant: MEDTRONIC INC

    Inventor： ZEIJEMAKER VOLKERT A ,  KALIN RON ,  HRDLICKA GREGORY A ,  CHO YONG KYUN ,  REINKE JAMES D ,  FOERSTER LAURIE D

    IPC: A61N1/36 ,  A61B19/00 ,  A61N1/08 ,  A61N1/16 ,  A61N1/365 ,  A61N1/37 ,  A61N1/372

    CPC classification number: A61N1/37 ,  A61B90/04 ,  A61B2090/0418 ,  A61B2090/0481 ,  A61B2090/3954 ,  A61N1/365 ,  A61N1/36514 ,  A61N1/3718

    Abstract: ABSTRACT OF THE DISCLOSURE Apparatus and methods are disclosed for reducing the potentially harmful effects of electromagnetic waves on an implantable medical device. In one embodiment of the present invention, an implantable medical system comprising a dual threshold magnetic sensor capable of detecting an elevated magnetic field is disclosed. The sensor can comprise a solid-state sensor capable of detecting a static magnetic field in excess of about 1500 Gauss. The magnetic sensor can be operatively coupled to electronics that are capable of altering the operation of the system upon detection of an elevated magnetic field by the magnetic sensor.

    Abstract translation: 公开的摘要公开了用于减少电磁波对可植入医疗装置的潜在有害影响的装置和方法。 在本发明的一个实施例中，公开了一种包括能够检测升高的磁场的双阈值磁传感器的可植入医疗系统。 传感器可以包括能够检测超过约1500高斯的静态磁场的固态传感器。 磁传感器可以可操作地耦合到电子设备，该电子设备能够在磁传感器检测到升高的磁场时改变系统的操作。

    APPARATUS AND METHOD FOR SHUNTING INDUCED CURRENTS IN AN ELECTRICAL LEAD
    26.
    发明申请
    APPARATUS AND METHOD FOR SHUNTING INDUCED CURRENTS IN AN ELECTRICAL LEAD 审中-公开
    用于在电气引线中分离感应电流的装置和方法

    公开(公告)号：WO03063946A2

    公开(公告)日：2003-08-07

    申请号：PCT/US0301892

    申请日：2003-01-22

    Applicant: MEDTRONIC INC

    Inventor： ZEIJLEMAKER VOLKERT A ,  KALIN RON ,  HRDLICKA GREGORY A ,  CHO YONG KYUN ,  REINKE JAMES D ,  FOERSTER LAURIE D

    IPC: A61N20060101 ,  A61N1/05 ,  A61N1/362 ,  A61N1/372 ,  A61N1/39 ,  A61N

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

    Abstract: An electrical lead includes an elongate body having a proximal end portion and a distal end portion, a first electrode disposed adjacent and joined to the distal end portion of the elongate body. Current flow within the first electrode is limited when a predetermined condition occurs, such as the generation of an electromagnetic field having a predetermined frequency range. The medical electrical lead may further comprise one or more second electrodes disposed adjacent the first electrode and joined to the elongate body to shunt current to body tissue when the predetermined condition occurs.

    Abstract translation: 电引线包括具有近端部分和远端部分的细长主体，与细长主体的远端部分相邻并连接的第一电极。 当预定条件发生时，例如产生具有预定频率范围的电磁场，第一电极内的电流被限制。 医疗电引线还可以包括一个或多个邻近第一电极设置的第二电极，并且在预定条件发生时连接到细长体以将电流分流到身体组织。

    System for cardiac stimulus steering
    27.
    发明公开
    System for cardiac stimulus steering 失效
    系统zur Herstimulussteuerung

    公开(公告)号：EP0813889A2

    公开(公告)日：1997-12-29

    申请号：EP97304267

    申请日：1997-06-18

    Applicant: MEDTRONIC INC

    Inventor： THOMPSON DAVID L ,  KING GARY W ,  HRDLICKA GREGORY A

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

    CPC classification number: A61N1/3918 ,  A61N1/368 ,  A61N1/3684 ,  A61N1/3712 ,  A61N1/3714

    Abstract: There is provided a system of steering stimulus pulses to one or more selected cardiac sites, for improved capture and for easy adjustment of the stimulus pulse when threshold level has changed, without the need to simply increase stimulus power or to replace an implanted lead. The invention utilizes, in a cardiac environment, the technique of delivering substantially concurrent pulses across two or more electrode pairs, each component pulse being adjusted as to pulse, duration and/or phase to steer, or direct the resultant composite pulse toward the target cardiac site. Embodiments of the invention include steering pulses for pacing of the left atrium; steering pulses for multichamber pacing; improved use of a single lead system with electrodes floating in the atrium, with specific steering of atrial pulses to provide an enhancement of a VDD system; steered delivery of atrial and/or ventricular defibrillation stimuli; and steered stimuli for arrhythmia prevention. In other specific embodiments, the steered pulse system is combined with capture detection and automatic adjustment of the steering parameters.

    Abstract translation: 提供了对一个或多个选定心脏部位的转向刺激脉冲的系统，用于在阈值水平改变时改善捕获并且易于调节刺激脉冲，而不需要简单地增加刺激功率或替换植入的导联。 本发明在心脏环境中利用在两个或更多个电极对之间传递基本上并发的脉冲的技术，每个分量脉冲被调整为关于脉冲，持续时间和/或相位以转向，或者导致所得到的复合脉冲朝向目标心脏 现场。 本发明的实施例包括用于起搏左心房的转向脉冲; 用于多腔起搏的转向脉冲; 改进使用电极漂浮在心房内的单导联系统，对特定的心房脉冲进行导向，以提高VDD系统的性能; 导向递送心房和/或心室除颤刺激; 并引导了心律失常预防的刺激。 在其他具体实施例中，转向脉冲系统与转向参数的捕捉检测和自动调节相结合。

    System for multisite cardiac stimulus steering
    28.
    发明公开
    System for multisite cardiac stimulus steering 失效
    一种用于心脏起搏的多位数的传输系统

    公开(公告)号：EP0813889A3

    公开(公告)日：1998-11-11

    申请号：EP97304267

    申请日：1997-06-18

    Applicant: MEDTRONIC INC

    Inventor： THOMPSON DAVID L ,  KING GARY W ,  HRDLICKA GREGORY A

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

    CPC classification number: A61N1/3918 ,  A61N1/368 ,  A61N1/3684 ,  A61N1/3712 ,  A61N1/3714

    Abstract: There is provided a system of steering stimulus pulses to one or more selected cardiac sites, for improved capture and for easy adjustment of the stimulus pulse when threshold level has changed, without the need to simply increase stimulus power or to replace an implanted lead. The invention utilizes, in a cardiac environment, the technique of delivering substantially concurrent pulses across two or more electrode pairs, each component pulse being adjusted as to pulse, duration and/or phase to steer, or direct the resultant composite pulse toward the target cardiac site. Embodiments of the invention include steering pulses for pacing of the left atrium; steering pulses for multichamber pacing; improved use of a single lead system with electrodes floating in the atrium, with specific steering of atrial pulses to provide an enhancement of a VDD system; steered delivery of atrial and/or ventricular defibrillation stimuli; and steered stimuli for arrhythmia prevention. In other specific embodiments, the steered pulse system is combined with capture detection and automatic adjustment of the steering parameters.

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