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    • 43. 发明授权
    • Detection and reduction of phrenic nerve stimulation
    • 检测和减少膈神经刺激
    • US08527051B1
    • 2013-09-03
    • US13545776
    • 2012-07-10
    • Sven-Erik HedbergTomas SvenssonKjell NorenStuart RosenbergKyungmoo RyuEdward Karst
    • Sven-Erik HedbergTomas SvenssonKjell NorenStuart RosenbergKyungmoo RyuEdward Karst
    • A61N1/37
    • A61N1/36521A61N1/3702
    • The present invention provides implantable medical devices for detecting phrenic nerve stimulation. A pacing module is configured to deliver pacing pulses having a predetermined pulse amplitude and/or width within the refractory period of the left ventricle. The pacing pulses are repeatedly delivered during a number of cardiac cycles, and the pacing pulses are delivered at different delays relative to an onset of the refractory period of the left ventricle in different cardiac cycles. An impedance measurement module is configured to measure impedance signals in time windows synchronized with the delivery of pacing pulses in the refractory period of the left ventricle. A phrenic nerve stimulation, PNS, detection module is configured to gather at least one impedance signal from each time window, create aggregated impedance signals using the impedance signals from the different time windows, and analyze the aggregated impedance signals to detect PNS.
    • 本发明提供了用于检测膈神经刺激的可植入医疗装置。 起搏模块被配置为在左心室的不应期内输送具有预定脉冲幅度和/或宽度的起搏脉冲。 起搏脉冲在多个心动周期期间重复递送,起搏脉冲相对于不同心脏周期中左心室的不应期的开始以不同的延迟递送。 阻抗测量模块被配置为测量与在左心室的不应期中递送起搏脉冲同步的时间窗内的阻抗信号。 膈神经刺激,PNS检测模块配置为从每个时间窗口收集至少一个阻抗信号,使用来自不同时间窗口的阻抗信号创建聚合阻抗信号,并分析聚合阻抗信号以检测PNS。
    • 44. 发明授权
    • Implantable cardiac stimulator, system, device and method for monitoring cardiac synchrony
    • 可植入式心脏刺激器,系统,装置和监测心脏同步的方法
    • US08068908B2
    • 2011-11-29
    • US12094543
    • 2005-11-30
    • Karin JärverudKenth NilssonSven-Erik Hedberg
    • Karin JärverudKenth NilssonSven-Erik Hedberg
    • A61N1/00
    • A61N1/3627A61B5/1107A61B5/6869A61B2562/0219A61N1/36514A61N1/36578
    • In a system and method for monitoring cardiac synchrony in a human heart, a first sensor is positioned at a first cardiac wall location of a heart that is subject to movements related to longitudinal valve plane movements along the longitudinal axis of the heart, and the first sensor measures said cardiac wall movements at the first cardiac wall location and emits a first sensor output signal corresponding thereto, a second sensor is positioned at a second cardiac wall location of the heart that is subject to movements related to longitudinal valve plane movements along the longitudinal axis of the heart, and the second sensor measures the cardiac wall movements at the second cardiac wall location and emits a second sensor output signal corresponding thereto. A lead arrangement is electrically connected to the first and second sensors and conducts the first and second sensor output signals therefrom to processing circuitry that processes the first and second sensor output signals to produce a synchronization signal therefrom indicative of synchrony in the respective valve plane movements at the first and second cardiac wall locations.
    • 在用于监测人心脏心脏同步的系统和方法中,第一传感器位于心脏的第一心脏壁位置处,该第一心脏壁位置受到与沿着心脏的纵向轴线的纵向瓣膜平面运动有关的运动,第一传感器 传感器测量在第一心脏壁位置处的心脏壁运动,并且发射与其对应的第一传感器输出信号,第二传感器定位在心脏的第二心脏壁位置处,该第二心脏壁位置受到与沿着纵向的纵向瓣膜平面运动相关的运动 并且第二传感器测量第二心脏壁位置处的心脏壁移动,并且发出与其对应的第二传感器输出信号。 引线装置电连接到第一和第二传感器,并将第一和第二传感器输出信号传送到处理电路,处理电路处理第一和第二传感器输出信号以产生同步信号,表示在各个阀平面运动中同步的同步信号 第一和第二心脏壁位置。
    • 47. 发明授权
    • Detection of diastolic heart failure
    • 舒张性心力衰竭的检测
    • US07483742B2
    • 2009-01-27
    • US10562109
    • 2004-04-26
    • Sven-Erik HedbergAnders BjörlingMaria TorpoKarin Ljungström
    • Sven-Erik HedbergAnders BjörlingMaria TorpoKarin Ljungström
    • A61N1/00
    • A61B5/021A61B5/02154A61N1/3627A61N1/36564A61N1/3702G06F19/00
    • An implantable medical apparatus for detecting diastolic heart failure, DHF, has a DHF determining device for determining at least one blood pressure parameter for detecting a DHF state of the heart of a patient. The DHF determining device includes a pressure measuring unit for measuring pulse pressure in a cardiac cycle for a predetermined workload situation of the patient as the blood pressure parameter, and a comparator compares the measured pulse pressure with a predetermined reference value. A pacemaker includes such an apparatus and a control unit that optimizes pacing therapy depending on the result of the comparison of the measured pulse pressures with the predetermined reference values. A corresponding method of detecting diastolic heart failure, DHF, includes the step of determining at least one blood pressure parameter for detecting a DHF state of the heart of a patient by determining, as said blood pressure parameter, the pulse pressure in a cardiac cycle for a predetermined workload situation of the patient, and the determined pulse pressure is compared with a predetermined reference value.
    • 用于检测舒张性心力衰竭的可植入医疗装置DHF具有用于确定用于检测患者心脏的DHF状态的至少一个血压参数的DHF确定装置。 DHF确定装置包括:压力测量单元,用于在患者的预定工作情况下测量心动周期中的脉搏压力作为血压参数,并且比较器将测量的脉搏压力与预定参考值进行比较。 起搏器包括这样的装置和控制单元,其根据所测量的脉搏压力与预定参考值的比较结果优化起搏治疗。 检测舒张性心力衰竭DHF的相应方法包括以下步骤:通过将作为所述血压参数的心脏周期中的脉搏压力确定为心动周期中的脉搏压力来确定用于检测患者心脏的DHF状态的至少一个血压参数 患者的预定工作情况,并将确定的脉搏压力与预定的参考值进行比较。