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    • 75. 发明授权
    • System and method for detecting heart failure and pulmonary edema based on ventricular end-diastolic pressure using an implantable medical device
    • 基于使用可植入医疗装置的心室舒张末期压力来检测心力衰竭和肺水肿的系统和方法
    • US07437192B2
    • 2008-10-14
    • US11100008
    • 2005-04-05
    • Jong GillXiaoyi Min
    • Jong GillXiaoyi Min
    • A61N1/365
    • A61N1/36564A61N1/3627A61N1/36521
    • Techniques are provided for detecting left ventricular end diastolic pressure (LV EDP) using a pressure sensor implanted within the heart of a patient and for detecting and evaluating heart failure and pulmonary edema based on LV EDP. Briefly, the peak of the R-wave of an intracardiac electrogram (IEGM) is used to trigger the measurement of a pressure value within the left ventricle. This pressure value is deemed to be representative of LV EDP. In this manner, LV EDP is easily detected merely by measuring pressure at one point within the heartbeat—thereby eliminating any need to track ventricular pressure throughout the heartbeat. Techniques for detecting and evaluating heart failure and pulmonary edema based on the R-wave triggered LV EDP measurements are also set forth herein.
    • 提供了使用植入患者心脏内的压力传感器来检测左心室舒张压(LV EDP)的技术,并且用于基于LV EDP检测和评估心脏衰竭和肺水肿。 简而言之,使用心内电描记图(IEGM)的R波的峰值来触发左心室内的压力值的测量。 该压力值被认为是LV EDP的代表。 以这种方式,仅通过测量心跳内的一点的压力来容易地检测LV EDP,从而消除了跟踪整个心跳期间的心室压力的任何需要。 本文还介绍了基于R波触发的LV EDP测量来检测和评估心脏衰竭和肺水肿的技术。
    • 77. 发明申请
    • Detection of renal failure by cardiac implantable medical device
    • 通过心脏植入式医疗器械检测肾功能衰竭
    • US20070038138A1
    • 2007-02-15
    • US11202534
    • 2005-08-11
    • Jong GillGene Bornzin
    • Jong GillGene Bornzin
    • A61B5/04
    • A61B5/0452A61B5/201A61N1/3702
    • Morphological features within electrical cardiac signals are tracked and changes in features are monitored to detect renal failure. The morphological feature may be an interval between corresponding polarization events such as the interval between QRS-complexes and peaks of corresponding T-waves (QTmax interval); the interval between QRS-complexes and ends of corresponding T-waves (QTend interval); or the interval between P-waves and corresponding QRS-complexes (PR interval). The feature may also be the elevation of a cardiac signal segment between corresponding polarization events, such as QRS-complexes and corresponding T-waves (ST segment); a duration of a polarization event, such as a QRS-complex (QRS width); or an amplitude of a polarization event, such as a T-wave (T-wave amplitude). The change in the feature may comprise a decrease in QTmax intervals, a decrease in QTend intervals, a deviation in ST segment elevation, an increase in QRS width, an increase in PR interval or a deviation in T-wave amplitude.
    • 跟踪电心电信号中的形态学特征,监测特征变化以检测肾功能衰竭。 形态特征可以是相应的极化事件之间的间隔,例如QRS-复合物之间的间隔和对应的T波的峰值(QTmax间隔); QRS复合体与相应T波结束之间的间隔(QTend间隔); 或P波与相应的QRS复合体之间的间隔(PR间隔)。 该特征还可以是对应的极化事件之间的心脏信号段的升高,例如QRS复合物和相应的T波(ST段); 极化事件的持续时间,例如QRS复合(QRS宽度); 或极化事件的振幅,例如T波(T波振幅)。 特征的变化可以包括QTmax间隔的减小,QTend间隔的减小,ST段抬高的偏差,QRS宽度的增加,PR间期的增加或T波幅度的偏差。
    • 80. 发明申请
    • 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器械的基于阻抗的检测系统的系统和方法
    • US20120221066A1
    • 2012-08-30
    • US13035773
    • 2011-02-25
    • Stuart RosenbergCecilia Qin XiYelena NabutovskyBrian Jeffrey WenzelJong GillWilliam Hsu
    • Stuart RosenbergCecilia Qin XiYelena NabutovskyBrian Jeffrey WenzelJong GillWilliam Hsu
    • A61N1/36
    • 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。