Method and system for trending variation in coronary burden across multiple heart rate ranges
    1.
    发明授权
    Method and system for trending variation in coronary burden across multiple heart rate ranges 有权
    多个心率范围冠状动脉负荷变化趋势的方法和系统

    公开(公告)号:US07930017B1

    公开(公告)日:2011-04-19

    申请号:US11753759

    申请日:2007-05-25

    IPC分类号: A61B5/04

    摘要: A method and system are provided for trending variation in coronary burden across multiple heart rate ranges. The method and system include obtaining cardiac signals having a segment of interest over a period of time where each cardiac signal has an associated heart rate that falls within at least one heart rate range. Segment variations of the segment of interest are determined and grouped based on the associated heart rates to produce distributions of segment variations that are associated with the heart rate ranges. Trending information is produced by automatically comparing the distributions of segment variations between different heart rate ranges.

    摘要翻译: 提供了一种方法和系统,用于跨越多个心率范围的冠状动脉负荷的趋势变化。 所述方法和系统包括在一段时间内获得具有感兴趣区段的心脏信号,其中每个心脏信号具有落入至少一个心率范围内的相关心率。 基于相关的心率来确定和分组感兴趣区段的区段变化,以产生与心率范围相关联的区段变化的分布。 通过自动比较不同心率范围之间的段变化的分布来产生趋势信息。

    Methods and systems for trending ST segment changes over time
    2.
    发明授权
    Methods and systems for trending ST segment changes over time 有权
    ST段趋势变化的方法和系统随着时间的推移而变化

    公开(公告)号:US08521267B1

    公开(公告)日:2013-08-27

    申请号:US11771660

    申请日:2007-06-29

    IPC分类号: A61B5/0472

    摘要: A method and system are provided for trending a coronary burden such as an ischemic burden or acute myocardial infarction (AMI) for a patient. Trending provides obtaining cardiac data over a period of time, identifying the onset and the termination of coronary episodes based on a ST segment variation within the cardiac data, recording coronary burden information, and presenting the coronary burden information to a user. The coronary burden information may include the number of coronary episodes occurring over a period of time, the time duration of the coronary episodes, and the maximum ST segment variations for the coronary episodes that occur over a period of time.

    摘要翻译: 提供了一种方法和系统,用于对患者的冠状动脉负荷如缺血负担或急性心肌梗塞(AMI)进行趋势。 趋势提供在一段时间内获得心脏数据,基于心脏数据内的ST段变化识别冠状动脉发作的发作和终止,记录冠状动脉负荷信息,以及向使用者呈现冠状动脉负荷信息。 冠状动脉负荷信息可以包括在一段时间内发生的冠状动脉发作次数,冠状动脉发作的持续时间以及在一段时间内发生的冠状动脉发作的最大ST段变化。

    System and method for tracking ST shift data utilizing histograms
    3.
    发明授权
    System and method for tracking ST shift data utilizing histograms 有权
    利用直方图跟踪ST移位数据的系统和方法

    公开(公告)号:US07725171B1

    公开(公告)日:2010-05-25

    申请号:US11848606

    申请日:2007-08-31

    IPC分类号: A61B5/04

    CPC分类号: A61B5/0452 A61N1/365

    摘要: A method and system are provided for tracking ST shift data. The system includes an implantable medical device having an input configured to receive cardiac signals. Each cardiac signal has an associated heart rate and includes a segment of interest. The implantable medical device further includes a processor configured to determine segment variations of the segment of interest in the cardiac signals. The processor determines a heart rate associated with each of the segment variations with each heart rate falling within a corresponding heart rate range. The implantable medical device also includes a memory configured to store a group of histograms for a corresponding group of heart rate ranges. The histograms store distributions for the segment variations within corresponding heart rate ranges.

    摘要翻译: 提供了一种跟踪ST移位数据的方法和系统。 该系统包括具有被配置为接收心脏信号的输入的可植入医疗装置。 每个心脏信号具有相关的心率并且包括感兴趣的部分。 可植入医疗装置还包括被配置为确定心脏信号中感兴趣区段的区段变化的处理器。 每个心率落在对应的心率范围内,处理器确定与每个区段变化相关联的心率。 可植入医疗装置还包括被配置为存储用于相应心率范围组的一组直方图的存储器。 直方图存储在相应的心率范围内的段变化的分布。

    System and method for efficiently distinguishing among cardiac ischemia, hypoglycemia and hyperglycemia using an implantable medical device and an external system
    4.
    发明授权
    System and method for efficiently distinguishing among cardiac ischemia, hypoglycemia and hyperglycemia using an implantable medical device and an external system 有权
    使用可植入医疗器械和外部系统有效区分心脏缺血,低血糖和高血糖的系统和方法

    公开(公告)号:US07756572B1

    公开(公告)日:2010-07-13

    申请号:US11740175

    申请日:2007-04-25

    IPC分类号: A61B5/0468

    摘要: Techniques are described for efficiently detecting and distinguishing among cardiac ischemia, hypoglycemia or hyperglycemia based on intracardiac electrogram (IEGM) signals. In one example, a preliminary indication of an episode of cardiac ischemia is detected based on shifts in ST segment elevation within the IEGM. In response, the implanted device then records additional IEGM data for transmission to an external system. The external system analyzes the additional IEGM data to confirm the detection of cardiac ischemia using a more sophisticated analysis procedure exploiting additional detection parameters. In particular, the external system uses detection parameters capable of distinguishing hypoglycemia, hyperglycemia and hyperkalemia from cardiac ischemia, such as QTmax and QTend intervals. Alternatively, the more sophisticated analysis procedure may be performed by the device itself, if it is so equipped. Other examples described herein pertain instead to the detection of atrial fibrillation.

    摘要翻译: 描述了基于心脏电图(IEGM)信号来有效检测和区分心脏缺血,低血糖或高血糖的技术。 在一个实例中,基于IEGM内的ST段抬高的移动来检测心脏缺血发作的初步指示。 作为响应,植入的装置然后记录附加的IEGM数据以传输到外部系统。 外部系统使用更复杂的分析程序利用额外的检测参数来分析额外的IEGM数据,以确认心脏缺血的检测。 特别地,外部系统使用能够区分低血糖,高血糖和高血钾从心脏缺血的检测参数,例如QTmax和QTend间期。 或者,如果装置如此装备,则可以由装置本身执行更复杂的分析程序。 本文描述的其它实例代替心房颤动的检测。

    System and method for adaptively adjusting cardiac ischemia detection thresholds and other detection thresholds used by an implantable medical device
    5.
    发明授权
    System and method for adaptively adjusting cardiac ischemia detection thresholds and other detection thresholds used by an implantable medical device 有权
    用于自适应调节心脏缺血检测阈值和由可植入医疗装置使用的其它检测阈值的系统和方法

    公开(公告)号:US07769436B1

    公开(公告)日:2010-08-03

    申请号:US11757796

    申请日:2007-06-04

    摘要: Techniques are described for adaptively adjusting detection thresholds for use in detecting cardiac ischemia and other abnormal physiological conditions based on morphological parameters derived from intracardiac electrogram (IEGM) signals, impedance measurements, or other signals. In one example, where ST segment elevation is used to detect cardiac ischemia, default detection thresholds are determined in advance from an examination of variations in ST segment elevations occurring within a population of patients. Thereafter, an individual pacemaker or other implantable medical device uses the default thresholds during an initial learning period to detect ischemia within the patient in which the device is implanted. During the initial learning period, the pacemaker also collects data representative of the range of variation in ST segment elevations occurring within the patient. The pacemaker then adaptively adjusts the thresholds based on the range of variation so as to improve detection specificity within the patient.

    摘要翻译: 描述了基于从心脏电图(IEGM)信号,阻抗测量或其它信号得出的形态学参数自适应地调整检测阈值用于检测心脏缺血和其他异常生理状况的技术。 在一个例子中,使用ST段抬高来检测心脏缺血,默认检测阈值是从对患者群体内发生的ST段抬高的变化的检查预先确定的。 此后,单个起搏器或其它可植入医疗装置在初始学习期间使用默认阈值来检测装置植入的患者内的局部缺血。 在初始学习期间,起搏器还收集代表病人ST段抬高范围变化的数据。 起搏器然后根据变异范围自适应地调整阈值,以提高患者内的检测特异性。

    Posture detection using pressure and other physiologic sensors
    6.
    发明授权
    Posture detection using pressure and other physiologic sensors 有权
    使用压力和其他生理传感器的姿势检测

    公开(公告)号:US08731665B1

    公开(公告)日:2014-05-20

    申请号:US11923286

    申请日:2007-10-24

    IPC分类号: A61N1/00

    CPC分类号: A61N1/365 A61N1/36535

    摘要: Systems and methods are provided for detecting the orientation and/or movement of a patient having an implantable cardiac stimulation device and evaluating whether a change in the patient's cardiac activity can be at least in part due to a change in the patient's orientation. In one particular embodiment, signals from an orientation sensor and/or a pressure sensor are evaluated to determine static positional orientation of the patient and determine based on the static orientation whether the patient's cardiac activity is abnormal.

    摘要翻译: 提供了用于检测具有可植入心脏刺激装置的患者的取向和/或运动的系统和方法,并且评估患者的心脏活动的变化是否可以至少部分地由于患者取向的改变而变化。 在一个特定实施例中,评估来自定向传感器和/或压力传感器的信号以确定患者的静态位置取向,并且基于静态取向来确定患者的心脏活动是否异常。