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 AND VV INTERVALS
    3.
    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
    4.
    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。

    Algorithm for the automatic determination of optimal AV an VV intervals
    6.
    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。

    Apparatus and methods for automatic adjustment of AV interval to ensure delivery of cardiac resynchronization therapy
    8.
    发明授权
    Apparatus and methods for automatic adjustment of AV interval to ensure delivery of cardiac resynchronization therapy 有权
    用于自动调整AV间隔以确保心脏再同步治疗的传递的装置和方法

    公开(公告)号:US08428716B2

    公开(公告)日:2013-04-23

    申请号:US12505925

    申请日:2009-07-20

    IPC分类号: A61N1/365

    摘要: A method of left ventricular pacing including automated adjustment of a atrio-ventricular (AV) pacing delay interval and intrinsic AV nodal conduction testing. It includes—upon expiration or reset of a programmable AV Evaluation Interval (AVEI)—performing the following: temporarily increasing a paced AV interval and a sensed AV interval and testing for adequate AV conduction and measuring an intrinsic atrio-ventricular (PR) interval for a right ventricular (RV) chamber. In the event that the AV conduction test reveals an AV conduction block condition then a pacing mode-switch to a bi-ventricular (Bi-V) pacing mode occurs and the magnitude of the AVEI is increased.

    摘要翻译: 一种左心室起搏的方法,包括自动调节心房(AV)起搏延迟间隔和内部AV节点传导测试。 它包括 - 可编程AV评估间隔(AVEI)的到期或复位 - 执行以下操作:临时增加节奏的AV间隔和感测到的AV间隔,并测试足够的AV传导并测量内在的心房(PR)间隔 右心室(RV)室。 在AV导通测试显示AV传导阻滞条件的情况下,起搏模式切换到双心室(Bi-V)起搏模式并且AVEI的幅度增加。

    COMMUNICATION BETWEEN IMPLANTABLE MEDICAL DEVICES
    10.
    发明申请
    COMMUNICATION BETWEEN IMPLANTABLE MEDICAL DEVICES 审中-公开
    可植入医疗器械之间的通讯

    公开(公告)号:US20100114209A1

    公开(公告)日:2010-05-06

    申请号:US12363215

    申请日:2009-01-30

    IPC分类号: A61N1/08

    摘要: A first implantable medical device (IMD) implanted within a patient may communicate with a second IMD implanted within the patient by encoding information in an electrical stimulation signal. The delivery of the electrical stimulation signal may provide therapeutic benefits to the patient. The second IMD may sense the electrical stimulation signal, which may be presented as an artifact in a sensed cardiac signal, and process the sensed signal to retrieve the encoded information. The second IMD may modify its operation based on the received therapy information. Crosstalk between the first and second IMDs may be reduced using various techniques described herein. For example, the first IMD may generate the electrical stimulation signal to include a spread spectrum energy distribution or a predetermined signal signature. The second IMD may effectively remove a least some of the signal artifact in a sensed cardiac signal based on the predetermined signal signature.

    摘要翻译: 植入在患者体内的第一可植入医疗装置(IMD)可以通过对电刺激信号中的信息进行编码来与植入患者内的第二IMD进行通信。 电刺激信号的传递可以为患者提供治疗益处。 第二IMD可以感测电刺激信号,其可以被呈现为感测到的心脏信号中的伪像,并且处理感测到的信号以检索经编码的信息。 第二IMD可以基于接收到的治疗信息修改其操作。 可以使用本文所述的各种技术来减少第一和第二IMD之间的串扰。 例如,第一IMD可以产生电刺激信号以包括扩频能量分布或预定信号特征。 基于预定的信号签名,第二IMD可以有效地去除感测到的心脏信号中的至少一些信号伪像。