Algorithm for the automatic determination of optimal AV and VV intervals
    1.
    发明授权
    Algorithm for the automatic determination of optimal AV and VV intervals 有权
    自动确定最佳AV和VV间隔的算法

    公开(公告)号:US08135463B2

    公开(公告)日:2012-03-13

    申请号:US11751250

    申请日:2007-05-21

    IPC分类号: A61N1/00

    摘要: Methods and devices for determining optimal Atrial to Ventricular (AV) pacing intervals and Ventricular to Ventricular (VV) delay intervals in order to optimize cardiac output. Impedance, preferably sub-threshold impedance, is measured across the heart at selected cardiac cycle times as a measure of chamber expansion or contraction. One embodiment measures impedance over a long AV interval to obtain the minimum impedance, indicative of maximum ventricular expansion, in order to set the AV interval. Another embodiment measures impedance change over a cycle and varies the AV pace interval in a binary search to converge on the AV interval causing maximum impedance change indicative of maximum ventricular output. Another method varies the right ventricle to left ventricle (VV) interval to converge on an impedance maximum indicative of minimum cardiac volume at end systole. Another embodiment varies the VV interval to maximize impedance change.

    摘要翻译: 用于确定最佳心房与心室(AV)起搏间隔和心室间室(VV)延迟间隔的方法和装置,以优化心输出量。 在选择的心脏周期时间内,跨心脏测量阻抗,优选亚阈值阻抗,作为腔室扩张或收缩的量度。 为了设定AV间隔,一个实施例测量长AV间隔上的阻抗以获得指示最大心室扩张的最小阻抗。 另一个实施例测量一个周期的阻抗变化,并且改变二进制搜索中的AV步速间隔以收敛于AV间隔,从而引起指示最大心室输出的最大阻抗变化。 另一种方法将右心室改变为左心室(VV)间隔,以收敛于指示最终心脏收缩最小心脏容积的阻抗最大值。 另一实施例改变VV间隔以最大化阻抗变化。

    Algorithm for the automatic determination of optimal AV an VV intervals
    3.
    发明授权
    Algorithm for the automatic determination of optimal AV an VV intervals 有权
    用于自动确定最佳AV的VV间隔的算法

    公开(公告)号:US07228174B2

    公开(公告)日:2007-06-05

    申请号:US10135912

    申请日:2002-04-29

    IPC分类号: A61N1/362

    摘要: Methods and devices for determining optimal Atrial to Ventricular (AV) pacing intervals and Ventricular to Ventricular (VV) delay intervals in order to optimize cardiac output. Impedance, preferably sub-threshold impedance, is measured across the heart at selected cardiac cycle times as a measure of chamber expansion or contraction. One embodiment measures impedance over a long AV interval to obtain the minimum impedance, indicative of maximum ventricular expansion, in order to set the AV interval. Another embodiment measures impedance change over a cycle and varies the AV pace interval in a binary search to converge on the AV interval causing maximum impedance change indicative of maximum ventricular output. Another method varies the right ventricle to left ventricle (VV) interval to converge on an impedance maximum indicative of minimum cardiac volume at end systole. Another embodiment varies the VV interval to maximize impedance change.

    摘要翻译: 用于确定最佳心房与心室(AV)起搏间隔和心室间室(VV)延迟间隔的方法和装置,以优化心输出量。 在选择的心脏周期时间内,跨心脏测量阻抗,优选亚阈值阻抗,作为腔室扩张或收缩的量度。 为了设定AV间隔,一个实施例测量长AV间隔上的阻抗以获得指示最大心室扩张的最小阻抗。 另一个实施例测量一个周期的阻抗变化,并且改变二进制搜索中的AV步速间隔以收敛于AV间隔,从而引起指示最大心室输出的最大阻抗变化。 另一种方法将右心室改变为左心室(VV)间隔,以收敛于指示最终心脏收缩最小心脏容积的阻抗最大值。 另一实施例改变VV间隔以最大化阻抗变化。

    ALGORITHM FOR THE AUTOMATIC DETERMINATION OF OPTIMAL AV AND VV INTERVALS
    5.
    发明申请
    ALGORITHM FOR THE AUTOMATIC DETERMINATION OF OPTIMAL AV AND VV INTERVALS 有权
    用于自动确定最佳AV和VV间隔的算法

    公开(公告)号:US20120150253A1

    公开(公告)日:2012-06-14

    申请号:US13400381

    申请日:2012-02-20

    IPC分类号: A61N1/365

    摘要: Methods and devices for determining optimal Atrial to Ventricular (AV) pacing intervals and Ventricular to Ventricular (VV) delay intervals in order to optimize cardiac output. Impedance, preferably sub-threshold impedance, is measured across the heart at selected cardiac cycle times as a measure of chamber expansion or contraction. One embodiment measures impedance over a long AV interval to obtain the minimum impedance, indicative of maximum ventricular expansion, in order to set the AV interval. Another embodiment measures impedance change over a cycle and varies the AV pace interval in a binary search to converge on the AV interval causing maximum impedance change indicative of maximum ventricular output. Another method varies the right ventricle to left ventricle (VV) interval to converge on an impedance maximum indicative of minimum cardiac volume at end systole. Another embodiment varies the VV interval to maximize impedance change.

    摘要翻译: 用于确定最佳心房与心室(AV)起搏间隔和心室间室(VV)延迟间隔的方法和装置,以优化心输出量。 在选择的心脏周期时间内,跨心脏测量阻抗,优选亚阈值阻抗,作为腔室扩张或收缩的量度。 为了设定AV间隔,一个实施例测量长AV间隔上的阻抗以获得指示最大心室扩张的最小阻抗。 另一个实施例测量一个周期的阻抗变化,并且改变二进制搜索中的AV步速间隔以收敛于AV间隔,从而引起指示最大心室输出的最大阻抗变化。 另一种方法将右心室改变为左心室(VV)间隔,以收敛于指示最终心脏收缩最小心脏容积的阻抗最大值。 另一实施例改变VV间隔以最大化阻抗变化。

    Algorithm for the automatic determination of optimal pacing intervals
    6.
    发明授权
    Algorithm for the automatic determination of optimal pacing intervals 失效
    自动确定最佳起搏间隔的算法

    公开(公告)号:US07711423B2

    公开(公告)日:2010-05-04

    申请号:US11135921

    申请日:2005-05-24

    IPC分类号: A61N1/362

    CPC分类号: A61N1/36521

    摘要: Impedance, e.g. sub-threshold impedance, is measured across the heart at selected cardiac cycle times as a measure of chamber expansion or contraction. One embodiment measures impedance over a long AV interval to obtain the minimum impedance, indicative of maximum ventricular expansion, in order to set the AV interval. Another embodiment measures impedance change over a cycle and varies the AV pace interval in a binary search to converge on the AV interval causing maximum impedance change indicative of maximum ventricular output. Another method varies the right ventricle to left ventricle (VV) interval to converge on an impedance maximum indicative of minimum cardiac volume at end systole. Another embodiment varies the VV interval to maximize impedance change. Other methods vary the AA interval to maximize impedance change over the entire cardiac cycle or during the atrial cycle.

    摘要翻译: 阻抗,例如 亚阈值阻抗是在选定心脏周期时间内心脏测量的,作为腔室扩张或收缩的量度。 为了设定AV间隔,一个实施例测量长AV间隔上的阻抗以获得指示最大心室扩张的最小阻抗。 另一个实施例测量一个周期的阻抗变化,并且改变二进制搜索中的AV步速间隔以收敛于AV间隔,从而引起指示最大心室输出的最大阻抗变化。 另一种方法将右心室改变为左心室(VV)间隔,以收敛于指示最终心脏收缩最小心脏容积的阻抗最大值。 另一实施例改变VV间隔以最大化阻抗变化。 其他方法改变AA间隔以最大化整个心动周期或心房周期期间的阻抗变化。

    Methods of identifying and/or assessing cardiac arrhythmias using an implantable medical device
    10.
    发明授权
    Methods of identifying and/or assessing cardiac arrhythmias using an implantable medical device 有权
    使用可植入医疗装置识别和/或评估心律失常的方法

    公开(公告)号:US08554315B2

    公开(公告)日:2013-10-08

    申请号:US13099547

    申请日:2011-05-03

    IPC分类号: A61B5/0452

    摘要: Apparatus using one or more modes of statistical analysis with one or more monitored parameters of a patient's heart to identify and/or assess arrhythmias. Through use of the one or more modes of statistical analysis, a medical professional can be aided during evaluation of patient data for diagnosis of the patient. At least one of the monitored parameters may include one or more values used representatively for storage intervals of a selected length. As such, for each storage interval, a value may be determined for the one monitored parameter occurring at an upper percentile and a lower percentile. In addition, a median value may be determined for the one monitored parameter for each storage interval. Over a plurality of the storage intervals, these determined values can be used in one or more modes of statistical analysis to better identify and assess the arrhythmias.

    摘要翻译: 一种使用一种或多种统计分析模式的患者心脏的一个或多个监测参数来识别和/或评估心律失常的装置。 通过使用一种或多种统计分析模式,可以在评估用于患者诊断的患者数据时辅助医学专业人员。 所监视的参数中的至少一个可以包括代表性地用于所选长度的存储间隔的一个或多个值。 因此,对于每个存储间隔,可以针对在上百分位数和下百分位数处发生的一个监视参数来确定值。 此外,可以针对每个存储间隔的一个被监视的参数确定中值。 在多个存储间隔中,这些确定的值可以用于一种或多种统计分析模式,以更好地识别和评估心律失常。