Guided ablation devices, systems, and methods
    5.
    发明授权
    Guided ablation devices, systems, and methods 有权
    引导消融装置,系统和方法

    公开(公告)号:US09095262B2

    公开(公告)日:2015-08-04

    申请号:US13344100

    申请日:2012-01-05

    摘要: An embodiment of the invention includes a system for the guidance of a catheter to different regions of tissue (e.g., cardiac tissue) for therapy (e.g., ablation therapy). A plurality of electrodes, such as an array of electrodes, may be configured to perform various tasks. First, some electrodes may measure cardiac polarization. Second, some electrodes may function as magnets (e.g., electromagnets) that guide a separate ablation catheter towards the electromagnetic electrodes. These electromagnetic electrodes may be positioned adjacent tissue that is now recognized (possibly due to the electrodes that measure cardiac polarization) as being in need of ablation therapy. Thus, the electromagnetic electrodes may cooperate with an ablation catheter to render a system with magnetic guidance capabilities using intracardiac magnetic field generation. The system may control electromagnetic forces from the array of electrodes to guide the ablation catheter tip to the desired therapy location. Other embodiments are described herein.

    摘要翻译: 本发明的一个实施例包括用于将导管引导到用于治疗(例如,消融治疗)的组织的不同区域(例如,心脏组织)的系统。 诸如电极阵列的多个电极可以被配置为执行各种任务。 首先,一些电极可以测量心脏极化。 第二,一些电极可以用作将单独的消融导管引向电磁电极的磁体(例如,电磁体)。 这些电磁电极可以被定位成现在识别的组织(可能由于测量心脏极化的电极而定)为需要消融治疗。 因此,电磁电极可以与消融导管配合使用心内磁场产生使具有磁性引导能力的系统。 该系统可以控制来自电极阵列的电磁力以将消融导管尖端引导到期望的治​​疗位置。 本文描述了其它实施例。

    Catheter with electrodes for impedance and/or conduction velocity measurement
    7.
    发明授权
    Catheter with electrodes for impedance and/or conduction velocity measurement 有权
    导管用于阻抗和/或传导速度测量

    公开(公告)号:US08961417B2

    公开(公告)日:2015-02-24

    申请号:US12348695

    申请日:2009-01-05

    申请人: Mehdi Razavi

    发明人: Mehdi Razavi

    IPC分类号: A61B5/053 A61B5/042

    CPC分类号: A61B5/042 A61B5/053

    摘要: An apparatus comprises a catheter comprising a first electrode. The apparatus also comprises a second electrode electrically attached to a person and coupled to the first electrode via the person's tissue. Logic is coupled to the electrodes and generates an electrical signal that is provided through the electrodes and computes an impedance or conduction velocity associated with the electrodes based on the electrical signal. The logic stores a threshold against which said computed impedance or conduction velocity is compared by said logic.

    摘要翻译: 一种装置包括包括第一电极的导管。 该装置还包括电连接到人并经由人的组织耦合到第一电极的第二电极。 逻辑耦合到电极并产生通过电极提供的电信号,并基于电信号计算与电极相关联的阻抗或传导速度。 该逻辑存储通过所述逻辑比较所述计算的阻抗或传导速度的阈值。

    Sheath And Method Of Use
    8.
    发明申请
    Sheath And Method Of Use 有权
    护套和使用方法

    公开(公告)号:US20110306970A1

    公开(公告)日:2011-12-15

    申请号:US13160219

    申请日:2011-06-14

    申请人: Mehdi Razavi

    发明人: Mehdi Razavi

    IPC分类号: A61B18/14

    摘要: In an embodiment a sheath allows one to simultaneously ablate tissue, using a catheter located in the sheath, and remove fluid from a patient's pericardial space, via the same sheath, all without withdrawing the ablation catheter from the sheath. Applying pressure (positive or negative) to fenestrations in the sheath may allow one to withdraw fluid from the space, navigate the sheath within the space, and/or adhere the sheath to tissue in the space. Other embodiments are described herein.

    摘要翻译: 在一个实施例中,护套允许使用位于护套中的导管同时烧蚀组织,并且经由相同的护套从患者的心包空间移除流体,而不会从护套中撤出消融导管。 施加压力(正或负)到护套中的开窗可以允许人从空间中抽出流体,在空间内导航护套,和/或将护套粘附到空间中的组织。 本文描述了其它实施例。

    Guided Ablation Devices, Systems, And Methods
    9.
    发明申请
    Guided Ablation Devices, Systems, And Methods 审中-公开
    引导消融装置,系统和方法

    公开(公告)号:US20120197100A1

    公开(公告)日:2012-08-02

    申请号:US13344100

    申请日:2012-01-05

    IPC分类号: A61B5/04 A61N1/05

    摘要: An embodiment of the invention includes a system for the guidance of a catheter to different regions of tissue (e.g., cardiac tissue) for therapy (e.g., ablation therapy). A plurality of electrodes, such as an array of electrodes, may be configured to perform various tasks. First, some electrodes may measure cardiac polarization. Second, some electrodes may function as magnets (e.g., electromagnets) that guide a separate ablation catheter towards the electromagnetic electrodes. These electromagnetic electrodes may be positioned adjacent tissue that is now recognized (possibly due to the electrodes that measure cardiac polarization) as being in need of ablation therapy. Thus, the electromagnetic electrodes may cooperate with an ablation catheter to render a system with magnetic guidance capabilities using intracardiac magnetic field generation. The system may control electromagnetic forces from the array of electrodes to guide the ablation catheter tip to the desired therapy location. Other embodiments are described herein.

    摘要翻译: 本发明的一个实施例包括用于将导管引导到用于治疗(例如,消融治疗)的组织的不同区域(例如,心脏组织)的系统。 诸如电极阵列的多个电极可以被配置为执行各种任务。 首先,一些电极可以测量心脏极化。 第二,一些电极可以用作将单独的消融导管引向电磁电极的磁体(例如,电磁体)。 这些电磁电极可以被定位成现在识别的组织(可能由于测量心脏极化的电极而定)为需要消融治疗。 因此,电磁电极可以与消融导管配合使用心内磁场产生使具有磁性引导能力的系统。 该系统可以控制来自电极阵列的电磁力以将消融导管尖端引导到期望的治​​疗位置。 本文描述了其它实施例。

    PREDICTING CHRONIC OPTIMAL A-V INTERVALS FOR BIVENTRICULAR PACING VIA OBSERVED INTER-ATRIAL DELAY
    10.
    发明申请
    PREDICTING CHRONIC OPTIMAL A-V INTERVALS FOR BIVENTRICULAR PACING VIA OBSERVED INTER-ATRIAL DELAY 有权
    通过观察到的星际间延迟预测用于双侧腹膜的慢性A-V间隔

    公开(公告)号:US20080027488A1

    公开(公告)日:2008-01-31

    申请号:US11460144

    申请日:2006-07-26

    IPC分类号: A61N1/05

    摘要: Herein provided are methods for optimizing the atrio-ventricular (A-V) delay for efficacious delivery of cardiac resynchronization therapy. The A-V delay is set such that pacing-induced left ventricular contraction occurs following completion of left atrial (LA) contraction. This maximizes left ventricular filling (preload) which theoretically results in optimal LV contraction via the Frank-Starling mechanism. In CRT devices, the programmed A-V delay starts with detection of electrical activity in the right atrium (RA). Thus, a major component of the A-V delay is the time required for inter-atrial conduction time (IACT) from the RA to the LA. This IACT can be measured during implantation as the time from the atrial lead stimulation artifact to local electrograms in a coronary sinus (CS) catheter. Assuming that the beginning of LA contraction closely corresponds with the beginning of LA electrical activity, the optimal AV delay should be related to the time between the start of RA electrical activity and the start of LA electrical activity plus the duration of LA atrial contraction. Thus the inventors hypothesized that during atrial pacing the IACT measured at implantation correlated with the echocardiographically defined optimal paced AV delay (PAV).

    摘要翻译: 本文提供了用于优化心房再同步治疗有效递送的心房(A-V)延迟的方法。 A-V延迟设定为在左心房(LA)收缩完成后发生起搏诱导的左心室收缩。 这最大化左心室充盈(预负荷),理论上通过Frank-Starling机制导致最佳的LV收缩。 在CRT设备中,编程的A-V延迟开始于右心房(RA)的电活动检测。 因此,A-V延迟的主要部分是从RA到LA的心房间传导时间(IACT)所需的时间。 这个IACT可以在植入期间被测量为从冠状窦(CS)导管中的心房引导刺激假象到局部电描记图的时间。 假设LA收缩的开始与LA电活动的开始密切相关,最佳AV延迟应与RA电活动开始与LA电活动开始加LA心房收缩持续时间之间的时间有关。 因此,本发明人假设在心房起搏期间,在植入时测量的IACT与超声心动图定义的最佳起搏AV延迟(PAV)相关。