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    • 86. 发明申请
    • PERIODIC BEAT DETECTION TO DETECT ARTIFACTS IN A CARDIAC ELECTROGRAM
    • 在心脏电泳中检测人体的周期性BEAT检测
    • US20100030093A1
    • 2010-02-04
    • US12183950
    • 2008-07-31
    • Xusheng ZhangRaja N. GhanemRobert W. Stadler
    • Xusheng ZhangRaja N. GhanemRobert W. Stadler
    • A61B5/0464A61N1/362
    • A61N1/3621A61B5/0464A61B5/7221A61B5/7239A61N1/36507A61N1/3925A61N1/3962
    • Techniques for determining whether artifacts are present in a cardiac electrogram are described. According to one example, a medical device senses a cardiac electrogram via electrodes. The medical device determines a derivative, e.g., a second order derivative, the electrogram. The medical device detects beats within the derivative, e.g., by comparing a rectified version of the derivative to one or more thresholds determined based on a maximum of the rectified derivative. The medical device determines whether the beats are periodic, and determines whether artifacts are present in the cardiac electrogram based on the determination of whether the beats are periodic. The medical device may further determine whether tachyarrhythmia is present and/or whether the cardiac rhythm of the patient is treatable based on the determination of whether the beats are periodic. For example, the medical device may determine that an electrogram is not treatable when the beats are periodic.
    • 描述了用于确定伪像是否存在于心电图中的技术。 根据一个示例,医疗装置通过电极感测心电图。 医疗设备确定导数,例如二阶导数,电描记图。 医疗设备检测导数内的跳动,例如通过将导数的整流版本与基于校正导数的最大值确定的一个或多个阈值进行比较。 医疗器械确定节拍是否是周期性的,并且基于确定节拍是否是周期性的确定来确定心脏电图中是否存在假象。 医疗装置可以基于是否是周期性的确定来进一步确定是否存在快速性心律失常和/或患者的心律是否可治疗。 例如,当节拍是周期性的时,医疗装置可以确定电描记图是不可治疗的。
    • 88. 发明授权
    • Ischemia detection
    • 缺血检测
    • US07181268B2
    • 2007-02-20
    • US10304112
    • 2002-11-25
    • Todd J. SheldonLee StylosShannon D. NelsonRobert W. Stadler
    • Todd J. SheldonLee StylosShannon D. NelsonRobert W. Stadler
    • A61B5/0402
    • A61N1/368A61N1/3627A61N1/36585
    • Techniques for detection and treatment of myocardial ischemia are described that monitor both the electrical and dynamic mechanical activity of the heart to detect and verify the occurrence of myocardial ischemia in a more reliable manner. The occurrence of myocardial ischemia can be detected by monitoring changes in an electrical signal such as an ECG or EGM, and changes in dynamic mechanical activity of the heart that are sensed by an accelerometer sensor. The heart acceleration signal can be obtained from an single- or multiple-axis accelerometer and/or a pressure sensor deployed within or near the heart. The techniques correlate contractility changes detected by an accelerometer or pressure sensor with changes in the ST electrogram segment detected by the electrodes to increase the reliability of ischemia detection.
    • 描述了用于检测和治疗心肌缺血的技术,其监测心脏的电和动态机械活性以更可靠的方式检测和验证心肌缺血的发生。 可以通过监测诸如ECG或EGM的电信号的变化以及由加速度计传感器感测到的心脏的动态机械活动的变化来检测心肌缺血的发生。 心脏加速度信号可以从部署在心脏内部或附近的单轴或多轴加速度计和/或压力传感器获得。 该技术将由加速度计或压力传感器检测到的收缩性变化与由电极检测到的ST电描绘部分的变化相关联,以增加缺血检测的可靠性。
    • 89. 发明授权
    • Method and apparatus for gauging severity of myocardial ischemic episodes
    • 测量心肌缺血发作严重程度的方法和装置
    • US07066891B2
    • 2006-06-27
    • US10325076
    • 2002-12-20
    • Robert W. StadlerSteven N. LuGary W. KingThomas R. Moore
    • Robert W. StadlerSteven N. LuGary W. KingThomas R. Moore
    • A61B5/02
    • A61B5/0452A61N1/362G06F19/00
    • An implantable medical device (IMD) for gauging the severity of ischemia in a patient's heart includes a data collection module configured to receive data about the patient's heart, a data processing module configured to process the data to identify an episode of ischemia in the patient and to determine if the episode is stable or unstable, and a reporting module configured to provide an alarm to the patient if the episode is unstable. A method executable by an implantable medical device to detect ischemia in a human heart suitably includes the steps of receiving data about the heart at the implantable medical device, processing the data within the implantable medical device to determine the severity of ischemia, and providing a response from the implantable medical device to the patient if ischemia is indicated.
    • 用于测量患者心脏的严重程度的可植入医疗装置(IMD)包括:数据收集模块,被配置为接收关于患者心脏的数据;数据处理模块,被配置为处理所述数据以识别患者的局部缺血发作;以及 以确定剧集是否稳定或不稳定,并且报告模块被配置为如果发作不稳定则向患者提供警报。 可植入医疗装置可检测人心脏缺血的方法适当地包括以下步骤:在可植入医疗装置处接收关于心脏的数据,处理可植入医疗装置内的数据以确定局部缺血的严重性,并提供反应 从可植入的医疗装置到患者,如果指示缺血。
    • 90. 发明授权
    • Ischemia detection
    • 缺血检测
    • US06937899B2
    • 2005-08-30
    • US09945179
    • 2001-08-30
    • Todd J. SheldonLee StylosShannon D. NelsonRobert W. Stadler
    • Todd J. SheldonLee StylosShannon D. NelsonRobert W. Stadler
    • A61B5/04A61B5/0452A61B5/11A61N1/365A61N1/368A61N1/362
    • A61B5/4839A61B5/04011A61B5/0452A61B5/1107A61B5/6869A61B5/7203A61B2562/028A61B2562/222A61N1/36542A61N1/368
    • Techniques for detection and treatment of myocardial ischemia are described that monitor both the electrical and dynamic mechanical activity of the heart to detect and verify the occurrence of myocardial ischemia in a more reliable manner. The occurrence of myocardial ischemia can be detected by monitoring changes in an electrical signal such as an ECG or EGM, and changes in dynamic mechanical activity of the heart. Dynamic mechanical activity can be represented, for example, by a heart acceleration signal or pressure signal. The electrical signal can be obtained from a set of implanted or external electrodes. The heart acceleration signal can be obtained from an accelerometer or pressure sensor deployed within or near the heart. The techniques correlate contractility changes detected by an accelerometer or pressure sensor with changes in the ST electrogram segment detected by the electrodes to increase the reliability of ischemia detection.
    • 描述了用于检测和治疗心肌缺血的技术,其监测心脏的电和动态机械活性以更可靠的方式检测和验证心肌缺血的发生。 可以通过监测诸如ECG或EGM的电信号的变化以及心脏的动态机械活动的变化来检测心肌缺血的发生。 动态机械活动可以例如通过心脏加速度信号或压力信号来表示。 电信号可以从一组植入电极或外部电极获得。 可以从部署在心脏内部或附近的加速度计或压力传感器获得心脏加速度信号。 该技术将由加速度计或压力传感器检测到的收缩性变化与由电极检测到的ST电描绘部分的变化相关联,以增加缺血检测的可靠性。