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    • 1. 发明授权
    • Devices, systems and methods to perform arrhythmia discrimination based on R-R interval stability corresponding to a plurality of ventricular regions
    • 基于对应于多个心室区域的R-R间期稳定性执行心律失常鉴别的装置,系统和方法
    • US09002453B2
    • 2015-04-07
    • US13194732
    • 2011-07-29
    • Allen J. KeelKyungmoo RyuStuart Rosenberg
    • Allen J. KeelKyungmoo RyuStuart Rosenberg
    • A61N1/00A61B5/04A61B5/042A61B5/0452A61B5/0464A61N1/362A61N1/368A61B5/0456
    • A61B5/0422A61B5/0452A61B5/0456A61B5/0464A61N1/3627A61N1/3684A61N1/3686
    • Described herein are implantable systems and devices, and methods for use therewith, that can be used to perform arrhythmia discrimination. A plurality of different sensing vectors are used to obtain a plurality of different IEGMs, each of which is indicative of cardiac electrical activity at a different ventricular region. The plurality of different IEGMs can include, e.g., an IEGM indicative of cardiac electrical activity at a first region of the patient's left ventricular (LV) chamber and an IEGM indicative of cardiac electrical activity at a second region of the patient's LV chamber. Additionally, the plurality of different IEGMs can further include an IEGM indicative of cardiac electrical activity at a region of a patient's right ventricular (RV) chamber. For each of the IEGMs, there is a determination of a corresponding localized R-R interval stability metric indicative of the R-R interval stability at the corresponding ventricular region. This can include, e.g., determining, for each of the IEGMs, a plurality of R-R intervals corresponding to a plurality of consecutive cardiac cycles of the IEGM. For each IEGM, a measure of variation (e.g., standard deviation, range or variance, but not limited thereto) can then be determined for the plurality of R-R intervals to thereby determine the localized R-R interval stability metric for the IEGM. Arrhythmia discrimination is then performed using the plurality of determined localized R-R interval stability metrics.
    • 本文描述了可用于执行心律失常鉴别的可植入系统和装置及其使用方法。 使用多个不同的感测向量来获得多个不同的IEGM,每个IEGM指示在不同心室区域处的心脏电活动。 多个不同的IEGM可以包括例如指示患者左心室(LV)室的第一区域处的心脏电活动的IEGM和指示患者LV室的第二区域处的心脏电活动的IEGM。 另外,多个不同的IEGM还可以包括指示患者右心室(RV)室的区域处的心脏电活动的IEGM。 对于每个IEGM,存在确定相应的局部R-R间期稳定性度量,其指示相应心室区域处的R-R间期稳定性。 这可以包括例如为每个IEGM确定对应于IEGM的多个连续心脏周期的多个R-R间隔。 对于每个IEGM,然后可以为多个R-R间隔确定变化量(例如,标准偏差,范围或方差,但不限于此),从而确定IEGM的局部R-R间隔稳定性度量。 然后使用多个确定的局部R-R间期稳定性度量进行心律失常鉴别。
    • 8. 发明授权
    • Systems and methods for optimizing ventricular pacing based on left atrial electromechanical activation detected by an AV groove electrode
    • 基于由AV凹槽电极检测的左心房机电激活来优化心室起搏的系统和方法
    • US08380308B2
    • 2013-02-19
    • US13074968
    • 2011-03-29
    • Stuart RosenbergKyungmoo Ryu
    • Stuart RosenbergKyungmoo Ryu
    • A61N1/00A61B5/04
    • A61N1/3684A61B5/0452A61B5/0535A61N1/3627A61N1/36521A61N1/36578
    • Techniques are provided for use with an implantable cardiac stimulation device equipped with a multi-pole left ventricular (LV) lead having a proximal electrode implanted near an atrioventricular (AV) groove of the heart of the patient. A left atrial (LA) cardioelectrical event is sensed using the proximal electrode of the LV lead and a corresponding LA cardiomechanical event is also detected, either using an implantable sensor or an external detection system. The electromechanical activation delay between the LA cardioelectrical event and the corresponding LA cardiomechanical event is determined and then pacing delays are set based on the electromechanical activation delay for use in controlling pacing. The pacing delays can include, e.g., AV delays for use with biventricular cardiac resynchronization therapy (CRT) pacing. Other techniques described herein are directed to exploiting right atrial (RA) cardioelectrical events detected via an RA lead for the purposes of setting pacing delays.
    • 提供技术用于配备有多极左心室(LV)引线的可植入心脏刺激装置,其具有植入患者心脏的房室(AV)凹槽附近的近端电极。 使用LV引线的近端电极检测左心房(LA)心电事件,并且还使用可植入传感器或外部检测系统检测相应的LA心脏机械事件。 确定LA心电事件与对应的LA心肌机械事件之间的机电激活延迟,然后基于用于控制起搏的机电激活延迟来设定起搏延迟。 起搏延迟可以包括例如用于双心室心脏再同步治疗(CRT)起搏的AV延迟。 本文描述的其它技术旨在利用通过RA引线检测的心房心电图事件,用于设置起搏延迟。
    • 9. 发明申请
    • DEVICES, SYSTEMS AND METHODS TO PERFORM ARRHYTHMIA DISCRIMINATION BASED ON R-R INTERVAL STABILITY CORRESPONDING TO A PLURALITY OF VENTRICULAR REGIONS
    • 基于R-R间隔稳定性相对于多个地区的ARRHYTHMIA辨别的设备,系统和方法
    • US20130030312A1
    • 2013-01-31
    • US13194732
    • 2011-07-29
    • Allen J. KeelKyungmoo RyuStuart Rosenberg
    • Allen J. KeelKyungmoo RyuStuart Rosenberg
    • A61B5/046A61N1/365A61N1/39A61B5/0456
    • A61B5/0422A61B5/0452A61B5/0456A61B5/0464A61N1/3627A61N1/3684A61N1/3686
    • Described herein are implantable systems and devices, and methods for use therewith, that can be used to perform arrhythmia discrimination. A plurality of different sensing vectors are used to obtain a plurality of different IEGMs, each of which is indicative of cardiac electrical activity at a different ventricular region. The plurality of different IEGMs can include, e.g., an IEGM indicative of cardiac electrical activity at a first region of the patient's left ventricular (LV) chamber and an IEGM indicative of cardiac electrical activity at a second region of the patient's LV chamber. Additionally, the plurality of different IEGMs can further include an IEGM indicative of cardiac electrical activity at a region of a patient's right ventricular (RV) chamber. For each of the IEGMs, there is a determination of a corresponding localized R-R interval stability metric indicative of the R-R interval stability at the corresponding ventricular region. This can include, e.g., determining, for each of the IEGMs, a plurality of R-R intervals corresponding to a plurality of consecutive cardiac cycles of the IEGM. For each IEGM, a measure of variation (e.g., standard deviation, range or variance, but not limited thereto) can then be determined for the plurality of R-R intervals to thereby determine the localized R-R interval stability metric for the IEGM. Arrhythmia discrimination is then performed using the plurality of determined localized R-R interval stability metrics.
    • 本文描述了可用于执行心律失常鉴别的可植入系统和装置及其使用方法。 使用多个不同的感测向量来获得多个不同的IEGM,每个IEGM指示在不同心室区域处的心脏电活动。 多个不同的IEGM可以包括例如指示患者左心室(LV)室的第一区域处的心脏电活动的IEGM和指示患者LV室的第二区域处的心脏电活动的IEGM。 另外,多个不同的IEGM还可以包括指示患者右心室(RV)室的区域处的心脏电活动的IEGM。 对于每个IEGM,存在确定相应的局部R-R间期稳定性度量,其指示相应心室区域处的R-R间期稳定性。 这可以包括例如为每个IEGM确定对应于IEGM的多个连续心脏周期的多个R-R间隔。 对于每个IEGM,然后可以为多个R-R间隔确定变化量(例如,标准偏差,范围或方差,但不限于此),从而确定IEGM的局部R-R间隔稳定性度量。 然后使用多个确定的局部R-R间期稳定性度量进行心律失常鉴别。
    • 10. 发明授权
    • Systems and methods for activating and controlling impedance-based detection systems of implantable medical devices
    • 用于激活和控制可植入医疗设备的基于阻抗的检测系统的系统和方法
    • US08295918B2
    • 2012-10-23
    • US13035773
    • 2011-02-25
    • Stuart RosenbergCecilia Q. XiYelena NabutovskyBrian J. WenzelJong GillWilliam Hsu
    • Stuart RosenbergCecilia Q. XiYelena NabutovskyBrian J. WenzelJong GillWilliam Hsu
    • A61B5/04
    • A61N1/3627A61N1/3702A61N1/372
    • Techniques are provided for use with implantable medical devices for addressing encapsulation effects, particularly in the detection of cardiac decompensation events such as heart failure (HF) or cardiogenic pulmonary edema (PE.) In one example, during an acute interval following device implant, cardiac decompensation is detected using heart rate variability (HRV), ventricular evoked response (ER) or various other non-impedance-based parameters that are insensitive to component encapsulation effects. During the subsequent chronic interval, decompensation is detected using intracardiac or transthoracic impedance signals. In another example, the degree of maturation of encapsulation of implanted components is assessed using impedance frequency-response measurements or based on the frequency bandwidth of heart sounds or other physiological signals. In this manner, impedance-based HF/PE detection systems can be activated as soon as component encapsulation has matured, without necessarily waiting until completion of a preset post-implant maturation interval, often set to forty-five days or more.
    • 提供技术用于可植入医疗装置,用于解决封装效应,特别是在心脏代偿失调事件如心力衰竭(HF)或心源性肺水肿(PE)的检测中。在一个实例中,在装置植入后的急性期间,心脏 使用心率变异性(HRV),心室诱发反应(ER)或对组件封装效应不敏感的各种其他基于非阻抗的参数来检测代偿失调。 在随后的慢性间隔期间,使用心内或经胸阻抗信号检测代偿失调。 在另一示例中,使用阻抗频率响应测量值或基于心脏声音或其他生理信号的频率带宽来评估植入部件的封装的成熟程度。 以这种方式,一旦组件封装已经成熟,就可以激活基于阻抗的HF / PE检测系统,而不必等待直到完成植入后成熟间隔的预设,通常设置为四十五天或更长时间。