Closed loop impedance-based cardiac resynchronization therapy systems, devices, and methods
    22.
    发明授权
    Closed loop impedance-based cardiac resynchronization therapy systems, devices, and methods 有权
    基于闭环阻抗的心脏再同步治疗系统,装置和方法

    公开(公告)号:US08295927B2

    公开(公告)日:2012-10-23

    申请号:US12254631

    申请日:2008-10-20

    IPC分类号: A61N1/365

    摘要: This document discusses, among other things, systems, devices, and methods measure an impedance and, in response, adjust an atrioventricular (AV) delay or other cardiac resynchronization therapy (CRT) parameter that synchronizes left and right ventricular contractions. A first example uses parameterizes a first ventricular volume against a second ventricular volume during a cardiac cycle, using a loop area to create a synchronization fraction (SF). The CRT parameter is adjusted in closed-loop fashion to increase the SF. A second example measures a septal-freewall phase difference (PD), and adjusts a CRT parameter to decrease the PD. A third example measures a peak-to-peak volume or maximum rate of change in ventricular volume, and adjusts a CRT parameter to increase the peak-to-peak volume or maximum rate of change in the ventricular volume.

    摘要翻译: 本文件还讨论了系统,设备和方法测量阻抗,并作为响应调整房室(AV)延迟或同步左心室收缩和右心室收缩的其他心脏再同步治疗(CRT)参数。 第一个例子是使用循环区域创建同步分数(SF),在心动周期中使用第一心室容积对第二心室容积进行参数化。 CRT参数以闭环方式调整以增加SF。 第二个例子是测量隔层相位差(PD),并调整CRT参数以减少PD。 第三个例子测量峰 - 峰体积或最大心室容积变化率,并调整CRT参数以增加心室容积的峰 - 峰体积或最大变化率。

    Apparatus and method for optimizing atrioventricular delay
    24.
    发明授权
    Apparatus and method for optimizing atrioventricular delay 有权
    用于优化房室延迟的装置和方法

    公开(公告)号:US07966066B2

    公开(公告)日:2011-06-21

    申请号:US11126490

    申请日:2005-05-11

    IPC分类号: A61N1/362

    摘要: Systems and methods to optimize atrioventricular delay during sensing or pacing of the atrium and for a plurality of sensed rates or pacing rates. In one example, a paced atrioventricular delay is calculated using a sensed atrioventricular interval and a paced atrioventricular interval. In another example, a plurality of paced atrioventricular delays for different pacing rates can be calculated. In another example embodiment, a plurality of sensed atrioventricular delays for different sensing rates can be calculated. Combinations of the various systems and methods are also possible.

    摘要翻译: 在心房的感测或起搏期间以及多个感测速率或起搏速率下优化房室延迟的系统和方法。 在一个示例中,使用感测的房室间隔和起搏房室间隔来计算起搏房室延迟。 在另一个示例中,可以计算用于不同起搏速率的多个起搏房室延迟。 在另一示例性实施例中,可以计算用于不同感测速率的多个感测的房室延迟。 各种系统和方法的组合也是可能的。

    Closed loop impedance-based cardiac resynchronization therapy systems, devices, and methods
    25.
    发明授权
    Closed loop impedance-based cardiac resynchronization therapy systems, devices, and methods 有权
    基于闭环阻抗的心脏再同步治疗系统,装置和方法

    公开(公告)号:US07440803B2

    公开(公告)日:2008-10-21

    申请号:US11264941

    申请日:2005-11-02

    IPC分类号: A61N1/365

    摘要: This document discusses, among other things, systems, devices, and methods measure an impedance and, in response, adjust an atrioventricular (AV) delay or other cardiac resynchronization therapy (CRT) parameter that synchronizes left and right ventricular contractions. A first example uses parameterizes a first ventricular volume against a second ventricular volume during a cardiac cycle, using a loop area to create a synchronization fraction (SF). The CRT parameter is adjusted in closed-loop fashion to increase the SF. A second example measures a septal-freewall phase difference (PD), and adjusts a CRT parameter to decrease the PD. A third example measures a peak-to-peak volume or maximum rate of change in ventricular volume, and adjusts a CRT parameter to increase the peak-to-peak volume or maximum rate of change in the ventricular volume.

    摘要翻译: 本文件还讨论了系统,设备和方法测量阻抗,并作为响应调整房室(AV)延迟或同步左心室收缩和右心室收缩的其他心脏再同步治疗(CRT)参数。 第一个例子是使用循环区域创建同步分数(SF),在心动周期中使用第一心室容积对第二心室容积进行参数化。 CRT参数以闭环方式调整以增加SF。 第二个例子是测量隔层相位差(PD),并调整CRT参数以减少PD。 第三个例子测量心室容积的峰 - 峰体积或最大变化率,并调整CRT参数以增加心室容积的峰 - 峰体积或最大变化率。

    Thoracic or intracardiac impedance detection with automatic vector selection
    26.
    发明授权
    Thoracic or intracardiac impedance detection with automatic vector selection 有权
    胸部或心内阻抗检测与自动矢量选择

    公开(公告)号:US08473050B2

    公开(公告)日:2013-06-25

    申请号:US13185580

    申请日:2011-07-19

    IPC分类号: A61B5/053 A61B5/0295

    摘要: Vector selection is automatically achieved via a thoracic or intracardiac impedance signal collected in a cardiac function management device or other implantable medical device that includes a test mode and a diagnostic mode. During a test mode, the device cycles through various electrode configurations for collecting thoracic impedance data. At least one figure of merit is calculated from the impedance data for each such electrode configuration. In one example, only non-arrhythmic beats are used for computing the figure of merit. A particular electrode configuration is automatically selected using the figure of merit. During a diagnostic mode, the device collects impedance data using the selected electrode configuration. In one example, the figure of merit includes a ratio of a cardiac stroke amplitude and a respiration amplitude. Other examples of the figure of merit are also described.

    摘要翻译: 矢量选择通过收集在包括测试模式和诊断模式的心脏功能管理装置或其他可植入医疗装置中的胸部或心内阻抗信号自动实现。 在测试模式期间,器件循环通过各种电极配置来收集胸部阻抗数据。 从每个这样的电极配置的阻抗数据计算至少一个品质因数。 在一个例子中,仅使用非心律失常节拍来计算品质因数。 使用品质因数自动选择特定的电极配置。 在诊断模式下,设备使用所选择的电极配置收集阻抗数据。 在一个示例中,品质因数包括心搏幅度和呼吸振幅的比值。 还描述了品质因数的其它实例。

    APPARATUS AND METHOD FOR OPTIMIZING ATRIOVENTRICULAR DELAY
    27.
    发明申请
    APPARATUS AND METHOD FOR OPTIMIZING ATRIOVENTRICULAR DELAY 审中-公开
    装置和方法优化ATRIOVENTRICULAR DELAY

    公开(公告)号:US20110251655A1

    公开(公告)日:2011-10-13

    申请号:US13164508

    申请日:2011-06-20

    IPC分类号: A61N1/365

    摘要: Systems and methods to optimize atrioventricular delay during sensing or pacing of the atrium and for a plurality of sensed rates or pacing rates. In one example, a paced atrioventricular delay is calculated using a sensed atrioventricular interval and a paced atrioventricular interval. In another example, a plurality of paced atrioventricular delays for different pacing rates can be calculated. In another example embodiment, a plurality of sensed atrioventricular delays for different sensing rates can be calculated. Combinations of the various systems and methods are also possible.

    摘要翻译: 在心房的感测或起搏期间以及多个感测速率或起搏速率下优化房室延迟的系统和方法。 在一个示例中,使用感测的房室间隔和起搏房室间隔来计算起搏房室延迟。 在另一个示例中,可以计算用于不同起搏速率的多个起搏房室延迟。 在另一示例性实施例中,可以计算用于不同感测速率的多个感测的房室延迟。 各种系统和方法的组合也是可能的。

    CLOSED LOOP IMPEDANCE-BASED CARDIAC RESYNCHRONIZATION THERAPY SYSTEMS, DEVICES, AND METHODS
    28.
    发明申请
    CLOSED LOOP IMPEDANCE-BASED CARDIAC RESYNCHRONIZATION THERAPY SYSTEMS, DEVICES, AND METHODS 有权
    基于闭环阻塞的心脏再生治疗系统,装置和方法

    公开(公告)号:US20090048637A1

    公开(公告)日:2009-02-19

    申请号:US12254631

    申请日:2008-10-20

    IPC分类号: A61N1/365

    摘要: This document discusses, among other things, systems, devices, and methods measure an impedance and, in response, adjust an atrioventricular (AV) delay or other cardiac resynchronization therapy (CRT) parameter that synchronizes left and right ventricular contractions. A first example uses parameterizes a first ventricular volume against a second ventricular volume during a cardiac cycle, using a loop area to create a synchronization fraction (SF). The CRT parameter is adjusted in closed-loop fashion to increase the SF. A second example measures a septal-freewall phase difference (PD), and adjusts a CRT parameter to decrease the PD. A third example measures a peak-to-peak volume or maximum rate of change in ventricular volume, and adjusts a CRT parameter to increase the peak-to-peak volume or maximum rate of change in the ventricular volume.

    摘要翻译: 本文件还讨论了系统,设备和方法测量阻抗,并作为响应调整房室(AV)延迟或同步左心室收缩和右心室收缩的其他心脏再同步治疗(CRT)参数。 第一个例子是使用循环区域创建同步分数(SF),在心动周期中使用第一心室容积对第二心室容积进行参数化。 CRT参数以闭环方式调整以增加SF。 第二个例子是测量隔层相位差(PD),并调整CRT参数以减少PD。 第三个例子测量峰 - 峰体积或最大心室容积变化率,并调整CRT参数以增加心室容积的峰 - 峰体积或最大变化率。