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    • 3. 发明授权
    • Implantable medical devices using heuristic filtering in cardiac event detection
    • 在心脏事件检测中使用启发式滤波的可植入医疗器械
    • US08781567B2
    • 2014-07-15
    • US13728869
    • 2012-12-27
    • Cameron Health, Inc.
    • James W. Phillips
    • A61B5/0402
    • A61B5/04017A61N1/37
    • Methods for performing cardiac signal analysis in an implanted medical device, and devices configured to perform illustrative methods of cardiac signal analysis. A cardiac signal is captured by an implanted device using implanted electrodes and, during at least certain conditions, the cardiac signal undergoes heuristic filtering. In some embodiments, heuristic filtering is achieved by modifying a signal or value that is used as an indicator of received signal amplitude. In an illustrative example, the heuristic filtering includes periodically incrementing or decrementing the signal or value toward a desired quiescent point, where the heuristic filter period is significantly longer than the sampling period for the signal itself. In another illustrative example, the heuristic filter frequency can be adjusted dynamically to keep the signal average near the desired quiescent point.
    • 用于在植入式医疗装置中进行心脏信号分析的方法以及被配置为执行心脏信号分析的说明性方法的装置。 心脏信号由注入的装置使用注入电极捕获,并且在至少某些条件期间,心脏信号经历启发式滤波。 在一些实施例中,通过修改用作接收信号幅度的指标的信号或值来实现启发式滤波。 在说明性示例中,启发式滤波包括将信号或值周期性地递增或递减到期望的静态点,其中启发式滤波器周期明显长于信号本身的采样周期。 在另一个说明性示例中,可以动态地调整启发式滤波器频率,以使信号平均值保持在期望的静态点附近。
    • 4. 发明申请
    • Implantable Medical Devices Using Heuristic Filtering in Cardiac Event Detection
    • 在心脏事件检测中使用启发式滤波的植入式医疗设备
    • US20130190634A1
    • 2013-07-25
    • US13728869
    • 2012-12-27
    • Cameron Health, Inc.
    • James W. Phillips
    • A61B5/04
    • A61B5/04017A61N1/37
    • Methods for performing cardiac signal analysis in an implanted medical device, and devices configured to perform illustrative methods of cardiac signal analysis. A cardiac signal is captured by an implanted device using implanted electrodes and, during at least certain conditions, the cardiac signal undergoes heuristic filtering. In some embodiments, heuristic filtering is achieved by modifying a signal or value that is used as an indicator of received signal amplitude. In an illustrative example, the heuristic filtering includes periodically incrementing or decrementing the signal or value toward a desired quiescent point, where the heuristic filter period is significantly longer than the sampling period for the signal itself. In another illustrative example, the heuristic filter frequency can be adjusted dynamically to keep the signal average near the desired quiescent point.
    • 用于在植入式医疗装置中进行心脏信号分析的方法以及被配置为执行心脏信号分析的说明性方法的装置。 心脏信号由注入的装置使用注入电极捕获,并且在至少某些条件期间,心脏信号经历启发式滤波。 在一些实施例中,通过修改用作接收信号幅度的指标的信号或值来实现启发式滤波。 在说明性示例中,启发式滤波包括将信号或值周期性地递增或递减到期望的静态点,其中启发式滤波器周期明显长于信号本身的采样周期。 在另一个说明性示例中,可以动态地调整启发式滤波器频率,以使信号平均值保持在期望的静态点附近。