CRYOTREATMENT DEVICES AND METHODS OF FORMING CONDUCTION BLOCKS

    公开(公告)号:US20160228174A1

    公开(公告)日:2016-08-11

    申请号:US15132934

    申请日:2016-04-19

    Abstract: Cryotreatment devices and methods of ablating tissue within the body are disclosed. A cryotreatment device in accordance with an exemplary embodiment of the present invention includes an elongated member having one or more needle-like ablation tips configured to induce necrosis at a target site within the heart. A cooling fluid such as a cryogen may be injected through a lumen extending into the distal portion of the device. The ablation tips can be configured to pierce and ablate surrounding tissue, blocking electrical stimuli that can cause fibrillations or other arrhythmias of the heart. The device may also include means for controlling the transmural depth at which the ablation tips are inserted into the cardiac tissue. Methods of forming a contiguous line of conduction block in accordance with the present invention are also disclosed.

    LEADLESS CARDIAC STIMULATION SYSTEMS
    4.
    发明申请
    LEADLESS CARDIAC STIMULATION SYSTEMS 审中-公开
    无铅心脏刺激系统

    公开(公告)号:US20140012344A1

    公开(公告)日:2014-01-09

    申请号:US13929286

    申请日:2013-06-27

    Abstract: Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrodes that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system. Each of the electrodes contains a source of electrical energy for pacing the myocardium and is adapted to receive electromagnetic energy from a source outside the myocardium. The system also includes a source adapted for placement outside the myocardium and that uses locally measured electrocardiograms to synchronize pacing of the heart by sending electromagnetic commands to the electrodes to pace the myocardium surrounding the electrodes. Also disclosed is various configurations of such systems, wireless electrode assemblies, and delivery catheters for delivering and implanting the electrode assemblies.

    Abstract translation: 提供了使用无引线电极来提供起搏治疗的各种构造的系统。 在一个示例中,提供用于心脏心肌的多个部位的系统包括使用经皮,经腔,导管递送系统可植入位于心肌附近的位置的无线起搏电极。 每个电极包含用于起搏心肌的电能源,并且适于从心肌外部的源接收电磁能。 该系统还包括适于放置在心肌外部的源,并且使用局部测量的心电图来通过向电极发送电磁命令来同步心脏的起搏,以对电极周围的心肌进行加速。 还公开了用于递送和植入电极组件的这种系统,无线电极组件和输送导管的各种配置。

    Cardiac Stimulation Using Intravascularly-Deliverable Electrode Assemblies
    8.
    发明申请
    Cardiac Stimulation Using Intravascularly-Deliverable Electrode Assemblies 审中-公开
    心脏刺激使用血管内交付电极组件

    公开(公告)号:US20140135865A1

    公开(公告)日:2014-05-15

    申请号:US14162446

    申请日:2014-01-23

    Abstract: A seed assembly for delivery to an interior of a heart includes an electrical stimulation circuit for delivering an electrical stimulus to cardiac tissue. A first electrode assembly is mechanically and electrically coupled to the seed assembly via a micro lead the first electrode assembly configured to deliver the electrical stimulus generated by the electrical stimulation circuit to the cardiac tissue. The seed assembly and the first electrode assembly are sized and shaped to fit entirely within the heart.

    Abstract translation: 用于递送到心脏内部的种子组件包括用于将电刺激递送到心脏组织的电刺激电路。 第一电极组件经由微引线机械地和电耦合到种子组件,第一电极组件被配置成将由电刺激电路产生的电刺激递送到心脏组织。 种子组件和第一电极组件的尺寸和形状被完全适合于心脏内。

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