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    • 2. 发明授权
    • Cardiac stimulation during a refractory period
    • 电动高效神经兴奋刺激技术领域
    • US07292888B2
    • 2007-11-06
    • US10638855
    • 2003-08-11
    • D. Curtis DenoDavid E. EulerLawrence J. MulliganEdwin G. DuffinDavid A. Igel
    • D. Curtis DenoDavid E. EulerLawrence J. MulliganEdwin G. DuffinDavid A. Igel
    • A61N1/365
    • A61N1/36514A61N1/3627A61N1/36564A61N1/368
    • A medical device, e.g., an implantable medical device, delivers one or more neurally-excitable stimulation pulses to myocardial tissue during a period when the tissue is refractory. The width of the pulses is less than or equal to approximately one half millisecond. In some embodiments, the current amplitude of the pulses is less than or equal to approximately twenty milliamps. In exemplary embodiments, the medical device delivers a pulse train of six or fewer pulses separated from each other by an interval that is greater than or equal to approximately ten milliseconds. In some embodiments, the medical device delivers pulses according to a schedule stored in a memory, or as a function of a monitored physiological parameter of a patient, such as an intracardiac pressure. In some embodiments, the medical device suspends or withholds delivery of neurally-excitable based on detection of cardiac ischemia.
    • 医疗装置,例如可植入的医疗装置,在组织难治的时期期间,向心肌组织递送一个或多个神经可兴奋的刺激脉冲。 脉冲的宽度小于或等于大约一个半毫秒。 在一些实施例中,脉冲的电流幅度小于或等于大约二十毫安。 在示例性实施例中,医疗设备递送彼此间隔大于或等于大约十毫秒的六个或更少个脉冲的脉冲串。 在一些实施例中,医疗装置根据存储在存储器中的计划或者作为患者的被监测的生理参数(例如心脏内压力)递送脉冲。 在一些实施方案中,基于心脏缺血的检测,医疗装置暂停或禁止神经可兴奋的递送。
    • 7. 发明授权
    • Method and apparatus for identifying lead-related conditions using lead impedance measurements
    • 使用引线阻抗测量来识别引线相关条件的方法和装置
    • US07047083B2
    • 2006-05-16
    • US10260676
    • 2002-09-30
    • Bruce D. GundersonAmisha S. PatelChad A. BoundsEdwin G. Duffin
    • Bruce D. GundersonAmisha S. PatelChad A. BoundsEdwin G. Duffin
    • A61N1/05
    • A61N1/3925A61B5/0424A61N2001/083
    • A method and apparatus for automatically detecting and diagnosing lead-related conditions is provided. Specifically, relatively short-term and relatively long-term impedance parameters are determined for detecting an impedance trend indicative of a lead-related condition such as an open circuit, which may be due to a conductor fracture or poor connection to an associated implantable medical device, or a short circuit due to an insulation breach. Monitoring of multiple lead impedance parameters is performed to diagnose a lead-related condition based on a number of diagnostic criteria. Supplementary analysis of multiple lead impedance parameter trends may be performed to identify lead-specific conditions, such as metal ion oxidation induced insulation degradation. A lead-related condition diagnosis and supporting data are stored in memory for uplinking to an external device for review by a clinician. A recommended corrective action and/or a patient notification signal for a lead-related condition may optionally be provided.
    • 提供了一种用于自动检测和诊断铅相关条件的方法和装置。 具体地,确定相对短期和相对长期的阻抗参数,用于检测指示诸如开路的引线相关状况的阻抗趋势,其可能是由于导体断裂或与相关联的可植入医疗装置的不良连接 ,或由于绝缘破坏引起的短路。 执行多个引线阻抗参数的监测,以根据多个诊断标准来诊断引线相关状况。 可以进行多个引线阻抗参数趋势的补充分析,以识别铅特异性条件,例如金属离子氧化诱导的绝缘降解。 引导相关状况诊断和支持数据存储在存储器中用于上行链接到外部设备以供临床医生审查。 可以可选地提供用于引线相关状况的推荐的纠正措施和/或患者通知信号。
    • 8. 发明授权
    • Mode switching pacemaker
    • 模式切换机
    • US5133350A
    • 1992-07-28
    • US648469
    • 1991-01-31
    • Edwin G. Duffin
    • Edwin G. Duffin
    • A61N1/365A61N1/362
    • A61N1/3622A61N1/3688
    • A mode switching bradycardia pacemaker especially adapted for incorporation in an antitachyarrhythmia pacing and/or cardioversion/defibrillation system, provides AAI pacing in the absence of an intrinsic atrial rate exceeding the pacing lower rate and as long as the patient's heart is capable of normal AV conduction. The pacemaker switches to VVI mode any time that the patient's ventricular rate falls below a predetermined value. The mode switching may be implemented in a DDD pacing system or in a pacing system employing an atrial and ventricular sense amplifier and a single pacing output circuit and switching circuitry for switching its output between atrial and ventricular leads. This bimodal operation allows use of AAI pacing for the antiarrhythmic and hemodynamic benefits of maintaining atrial function in patients with sinus node disease, by obviates the risk of ventricular asystole should the AAI mode become ineffective due to transiant or newly evolving permanent impairment of AV conduction in those patients where atrial synchronous tracking is considered undesirable. In the AAI/VVI bimodal operation, only a single chamber of the patient's heart is paced at any given time, AAI pacing occurs in the presence of spontaneous or conducted ventricular depolarization, and VVI pacing is resorted to in AV dissociation or in the absence of a ventricular rhythm exceeding the lower pacing rate.
    • 特别适用于并入抗心律失常起搏和/或心脏复律/除颤系统的模式切换心动过缓起搏器在没有内在心房率超过起搏较低速率的情况下提供AAI起搏,并且只要患者的心脏能够正常的AV传导 。 每当病人的心室率低于预定值时,起搏器就切换到VVI模式。 模式切换可以在DDD起搏系统中或在采用心房和心室感应放大器和单起搏输出电路和用于在心房和心室导联之间切换其输出的开关电路的起搏系统中实现。 这种双峰操作允许使用AAI起搏来维持窦房结疾病患者心房功能的抗心律失常和血液动力学优势,如果AAI模式由于横断面或新发生的AV传导永久性损伤而无效,则可消除室性心律失常的风险 那些心房同步跟踪的患者被认为是不合需要的。 在AAI / VVI双模式手术中,只有患者心脏的单个室在任何给定的时间进行起搏,AAI起搏发生在存在自发或进行性心室去极化的情况下,VVI起搏在AV解离或不存在 心室节律超过起搏速率较低。
    • 9. 发明授权
    • World wide patient location and data telemetry system for implantable medical devices
    • 世界范围的可植入医疗器械的患者位置和数据遥测系统
    • US06292698B1
    • 2001-09-18
    • US09045275
    • 1998-03-20
    • Edwin G. DuffinDavid L. ThompsonSteven D. GoedekeGregory J. Haubrich
    • Edwin G. DuffinDavid L. ThompsonSteven D. GoedekeGregory J. Haubrich
    • A61N137
    • A61N1/37282A61B5/1112G06F19/00G06F19/3418
    • A system for communicating with a medical device implanted in an ambulatory patient and for locating the patient in order to selectively monitor device function, alter device operating parameters and modes and provide emergency assistance to and communications with a patient. The implanted device includes a telemetry transceiver for communicating data and operating instructions between the implanted device and an external patient communications control device that is either worn by or located in proximity to the patient within the implanted device transceiving range. The control device preferably includes a communication link with a remote medical support network, a global positioning satellite receiver for receiving positioning data identifying the global position of the control device, and a patient activated link for permitting patient initiated personal communication with the medical support network. A system controller in the control device controls data and voice communications for selectively transmitting patient initiated personal communications and global positioning data to the medical support network, for initiating telemetry out of data and operating commands from the implanted device and transmission of the same to the medical support network, and for receiving and initiating re-programming of the implanted device operating modes and parameters in response to instructions received from the medical support network. The communications link between the medical support network and the patient communications control device may comprise a world wide satellite network, hard-wired telephone network, a cellular telephone network or other personal communications system.
    • 一种用于与植入在步行病人中的医疗设备进行通信并用于定位患者的系统,以便选择性地监测设备功能,改变设备操作参数和模式,并向患者提供紧急援助并与患者通信。 植入装置包括遥测收发器,用于在植入的装置和外部患者通信控制装置之间传送数据和操作指令,所述外部患者通信控制装置在植入装置收发范围内由患者佩戴或位于患者附近。 控制装置优选地包括与远程医疗支持网络的通信链路,用于接收标识控制装置的全局位置的定位数据的全球定位卫星接收机,以及用于允许患者发起与医疗支持网络的个人通信的患者激活的链路。 控制装置中的系统控制器控制数据和语音通信,用于选择性地将患者发起的个人通信和全球定位数据发送到医疗支持网络,用于发起远程数据和从植入设备的操作命令并将其传输到医疗 支持网络,以及响应于从医疗支持网络接收到的指令,接收和启动植入设备操作模式和参数的重新编程。 医疗支持网络和患者通信控制设备之间的通信链路可以包括全球卫星网络,硬连线电话网络,蜂窝电话网络或其他个人通信系统。
    • 10. 发明授权
    • Method and apparatus for discriminating among normal and pathological
tachyarrhythmias
    • 用于诊断正常和病理性TACHYARRHYTHMIAS的方法和装置
    • US5193550A
    • 1993-03-16
    • US621133
    • 1990-11-30
    • Edwin G. Duffin
    • Edwin G. Duffin
    • A61N1/362
    • A61N1/3622
    • A method and apparatus for discriminating among the various normal and pathologic tachycardias. In response to the detection of tachycardia, far-field ventricular electrograms sensed using atrial electrodes and far-field atrial electrograms sensed using ventricular electrodes are analyzed in order to categorize the source and type of tachyarrhythmia detected. The detection method and apparatus may be employed in conjunction with dual chamber anti-bradycardia pacemakers to avoid pacemaker mediated tachycardias or may be employed to mediate the delivery of pacing energy or cardioversion/defibrillation shock energy to a malfunctioning heart, in the context of an implantable antitachycardia device.
    • 用于区分各种正常和病理性心动过速的方法和装置。 为了响应心动过速的检测,分析使用心房电极感测的远场心室电图和使用心室电极感测的远场心房电描记图,以便对所检测到的快速性心律失常的来源和类型进行分类。 检测方法和装置可以与双室抗心动过缓起搏器结合使用,以避免起搏器介导的心动过速,或者可以用于在可植入物的情况下介导起搏能量或心脏复律/除颤休克能量传递到故障心脏 抗心律失常装置