Ischemia detection using a heart sound sensor
    71.
    发明授权
    Ischemia detection using a heart sound sensor 有权
    使用心脏声音传感器进行缺血检测

    公开(公告)号:US08758260B2

    公开(公告)日:2014-06-24

    申请号:US13231152

    申请日:2011-09-13

    IPC分类号: A61B5/04

    摘要: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.

    摘要翻译: 包括可植入医疗装置(IMD)的系统包括可植入心音传感器,以产生代表至少一个心音的电信号。 心脏声音与患者心脏的机械活动有关。 另外,IMD包括耦合到心脏声音传感器以产生心脏声音信号的心脏声音传感器接口电路,以及耦合到心脏声音传感器接口电路的信号分析器电路。 信号分析器电路测量基线心音信号,并且认为已经发生了缺血事件,其中使用来自已建立的基线心音信号的心音信号的测量后续变化。

    Cardiac function monitor using information indicative of lead motion
    73.
    发明授权
    Cardiac function monitor using information indicative of lead motion 有权
    心脏功能监测器使用指示引导运动的信息

    公开(公告)号:US08649853B2

    公开(公告)日:2014-02-11

    申请号:US13168531

    申请日:2011-06-24

    摘要: Systems and methods to monitor cardiac function using information indicative of lead motion are described. In an example, a system including an implantable medical device can include a receiver circuit configured to be electrically coupled to conductor comprising a portion of an implantable lead and be configured to obtain information indicative of a movement of the implantable lead due at least in part to a motion of a heart. The system can include a sensing circuit configured to obtain information indicative of cardiac electrical activity. The system can include a processor circuit configured to construct a template representative of a contraction of the heart, where the template can be constructed using the information indicative of the movement of the implantable lead due at least in part to the motion of the heart during the contraction, and using the information indicative of the cardiac electrical activity sensed during the contraction.

    摘要翻译: 描述使用指示引导运动的信息来监测心脏功能的系统和方法。 在一个示例中,包括可植入医疗装置的系统可以包括被配置为电耦合到导体的接收器电路,该导体包括可植入引线的一部分,并且被配置为获得指示可植入引线的移动的信息, 一个心脏的动作。 该系统可以包括被配置为获得指示心脏电活动的信息的感测电路。 该系统可以包括配置成构造代表心脏收缩的模板的处理器电路,其中可以使用指示可植入导线的运动的信息构造模板,至少部分地由于心脏的运动 并且使用指示在收缩期间感测到的心脏电活动的信息。

    Sensing rate of change of pressure in the left ventricle with an implanted device
    75.
    发明授权
    Sensing rate of change of pressure in the left ventricle with an implanted device 有权
    用植入装置感测左心室压力变化率

    公开(公告)号:US08535235B2

    公开(公告)日:2013-09-17

    申请号:US13605397

    申请日:2012-09-06

    IPC分类号: A61B5/02

    摘要: An implantable device and method for monitoring S1 heart sounds with a remotely located accelerometer. The device includes a transducer that converts heart sounds into an electrical signal. A control circuit is coupled to the transducer. The control circuit is configured to receive the electrical signal, identify an S1 heart sound, and to convert the S1 heart sound into electrical information. The control circuit also generates morphological data from the electrical information. The morphological data relates to a hemodynamic metric, such as left ventricular contractility. A housing may enclose the control circuit. The housing defines a volume coextensive with an outer surface of the housing. The transducer is in or on the volume defined by the housing.

    摘要翻译: 一种用远程位置加速度计监测S1心音的可植入装置和方法。 该装置包括将心音转换为电信号的换能器。 控制电路耦合到换能器。 控制电路被配置为接收电信号,识别S1心音,并将S1心音转换为电信息。 控制电路还从电信息生成形态数据。 形态学数据涉及血流动力学指标,如左心室收缩力。 壳体可以包围控制电路。 壳体限定与壳体的外表面共同延伸的体积。 传感器位于由外壳限定的体积中。

    Method and apparatus for sensing mechanical energy of an implantable lead
    76.
    发明授权
    Method and apparatus for sensing mechanical energy of an implantable lead 有权
    用于感测可植入引线的机械能的方法和装置

    公开(公告)号:US08301267B2

    公开(公告)日:2012-10-30

    申请号:US12876426

    申请日:2010-09-07

    IPC分类号: A61N1/05

    摘要: An apparatus comprises an implantable sensor and a signal analyzer circuit communicatively coupled to the implantable sensor. The implantable sensor is configured for coupling to an implantable lead and the implantable sensor provides an electrical vibration sensor signal representative of mechanical vibration of the implantable lead. The signal analyzer circuit is configured to determine a baseline of the vibration sensor signal, detect a change in the vibration sensor signal from the baseline vibration sensor signal, and provide an indication of the change to a user or process.

    摘要翻译: 一种装置包括可植入传感器和通信地耦合到可植入传感器的信号分析器电路。 可植入传感器被配置为联接到可植入引线,并且可植入传感器提供表示可植入引线的机械振动的电振动传感器信号。 信号分析器电路被配置为确定振动传感器信号的基线,从基线振动传感器信号检测振动传感器信号的变化,并且向用户或过程提供变化的指示。

    Remote sensing in an implantable medical device
    77.
    发明授权
    Remote sensing in an implantable medical device 有权
    植入式医疗设备中的遥感

    公开(公告)号:US08285373B2

    公开(公告)日:2012-10-09

    申请号:US12835288

    申请日:2010-07-13

    IPC分类号: A61N1/00

    摘要: An embodiment uses an accelerometer to sense heart sounds, and determines heart rate info nation using the sensed heart sounds. An embodiment uses an accelerometer to sense respiratory activity. An embodiment delivers a programmed neural stimulation therapy with a programmed duty cycle, where the programmed duty cycle includes a stimulation ON portion followed by a stimulation OFF portion. An electrode electrically connected to the implanted neural stimulation device is used to remotely detect cardiac activity. The remotely detected cardiac activity is used to detect heart rate information during the stimulation ON portion and to detect heart rate information during the stimulation OFF portion. The detected heart rate information and/or the detected respiration information are used to control a neural stimulation therapy performed by the neural stimulator device and/or are used to provide diagnostic information for the patient's condition.

    摘要翻译: 一个实施例使用加速度计来感测心脏声音,并且使用所感测到的心脏声音来确定心率信息国家。 一个实施例使用加速计来感测呼吸活动。 实施例以编程的占空比递送编程的神经刺激疗法,其中编程的占空比包括刺激开启部分,随后是刺激关闭部分。 电连接到植入的神经刺激装置的电极用于远程检测心脏活动。 远程检测到的心脏活动用于在刺激ON部分期间检测心率信息,并在刺激OFF部分期间检测心率信息。 检测到的心率信息和/或检测到的呼吸信息用于控制由神经刺激器装置执行的神经刺激治疗和/或用于提供患者状况的诊断信息。

    Physiological event detection systems and methods
    79.
    发明授权
    Physiological event detection systems and methods 有权
    生理事件检测系统和方法

    公开(公告)号:US08257271B2

    公开(公告)日:2012-09-04

    申请号:US12776557

    申请日:2010-05-10

    IPC分类号: A61B5/04

    摘要: Systems and methods using constant false alarm rate techniques for event detection. One example of an event detection method includes collecting a first distribution of measurements for a first physiological parameter. In another example, the first distribution of measurements includes only non-event measurements. One or more values are determined corresponding to at least a first tail area of the first distribution from at least one measurement of the first physiological parameter toward an end point of the distribution. A threshold is established based on a specified false alarm rate. The one or more values are compared to the threshold. The method includes determining if the measurement is representative of a detected event using the comparison.

    摘要翻译: 用于事件检测的常数误报率技术的系统和方法。 事件检测方法的一个示例包括收集第一生理参数的测量的第一分布。 在另一示例中,测量的第一分布仅包括非事件测量。 从第一生理参数的至少一个测量到分布的终点,确定对应于第一分布的至少第一尾区的一个或多个值。 基于指定的虚警率建立阈值。 将一个或多个值与阈值进行比较。 该方法包括使用比较来确定测量是否表示检测到的事件。