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    Devices and Methods for Reducing Electrical Noise in an Irrigated Electrophysiology Catheter System
    23.
    发明申请
    Devices and Methods for Reducing Electrical Noise in an Irrigated Electrophysiology Catheter System 审中-公开
    灌溉电生理导管系统降低电气噪声的装置和方法

    公开(公告)号：US20120165735A1

    公开(公告)日：2012-06-28

    申请号：US12979411

    申请日：2010-12-28

    Applicant: Sandra Keh ,  Michael C. Bednarek

    Inventor： Sandra Keh ,  Michael C. Bednarek

    IPC: A61M1/00

    CPC classification number: A61M3/0258 ,  A61B18/1492 ,  A61B2217/007

    Abstract: An irrigation system for use with an irrigated electrophysiology catheter includes a peristaltic pump and an irrigation tube. The pump generally includes a pump clamp and a rotor, which are spaced apart to provide a tubing channel therebetween. The irrigation tube is inserted into the tubing channel. At least one of the pump clamp and the irrigation tube is treated to reduce surface adhesion therebetween. This advantageously minimizes perturbations to the double layer, which reduces a noise signal that might otherwise couple to and distort an electrogram signal.

    Abstract translation: 用于灌溉电生理导管的灌溉系统包括蠕动泵和冲洗管。 泵通常包括泵夹和转子，其间隔开以在其间提供管道通道。 将灌洗管插入管道。 处理泵夹和冲洗管中的至少一个以减少其间的表面粘附。 这有利地使对双层的扰动最小化，这降低了否则可能耦合到电摄迹信号并使其变形的噪声信号。

    Transseptal puncture needle and needle assemblies
    24.
    发明授权
    Transseptal puncture needle and needle assemblies 有权
    经血穿刺针和针组件

    公开(公告)号：US08114110B2

    公开(公告)日：2012-02-14

    申请号：US12117675

    申请日：2008-05-08

    Applicant: Michael C. Bednarek ,  Ravisankar Gurusamy ,  Hans Schnellmann ,  Todd Stangenes

    Inventor： Michael C. Bednarek ,  Ravisankar Gurusamy ,  Hans Schnellmann ,  Todd Stangenes

    IPC: A61B17/34

    CPC classification number: A61B17/00234 ,  A61B17/3478 ,  A61B2017/00247 ,  A61B2017/0046 ,  A61B2018/00392 ,  A61B2090/034 ,  A61M2025/0089 ,  A61M2025/0681 ,  Y10T29/49826

    Abstract: A transseptal needle includes an elongate needle body having a distal end and a proximal end and a cannular needle tip located proximate the distal end of the needle body. The needle tip has a distal segment, a proximal segment, and a longitudinal axis. An inner surface of the needle tip defines a passageway spanning at least a portion of the needle tip, and an outer surface of the needle tip defines a wall with the inner surface. The distal segment of the needle tip also includes a wedge surface and a dome-shaped region. The wedge surface forms a wedge angle of other than 90 degrees relative to the longitudinal axis. The dome-shaped region, which intersects the wedge surface, includes at least two bevels that intersect the wedge surface and that intersect each other at one or more points on the needle tip.

    Abstract translation: 经导管针包括具有远端和近端的细长针体和位于针体远端附近的管状针尖。 针尖具有远侧段，近端段和纵向轴线。 针尖的内表面限定跨过针尖的至少一部分的通道，并且针尖的外表面限定具有内表面的壁。 针尖的远端部分还包括楔形表面和圆顶形区域。 楔形表面相对于纵向轴线形成不同于90度的楔角。 与楔形表面相交的圆顶形区域包括与楔形表面相交并且在针尖上的一个或多个点处彼此相交的至少两个斜面。

    Process and device for the treatment of atrial arrhythmia
    25.
    发明授权
    Process and device for the treatment of atrial arrhythmia 有权
    治疗房性心律失常的过程和装置

    公开(公告)号：US08052680B2

    公开(公告)日：2011-11-08

    申请号：US11545943

    申请日：2006-10-10

    Applicant: James A. Hassett ,  John F. Swartz ,  Michael C. Bednarek

    Inventor： James A. Hassett ,  John F. Swartz ,  Michael C. Bednarek

    IPC: A61B18/04 ,  A61B18/14

    CPC classification number: A61M25/1011 ,  A61B18/1492 ,  A61B2017/22067 ,  A61B2018/00065 ,  A61B2018/00214 ,  A61B2018/00238 ,  A61B2018/00255 ,  A61B2018/00261 ,  A61B2018/00333 ,  A61B2018/00351 ,  A61B2018/00375 ,  A61B2018/00577 ,  A61B2018/1435 ,  A61B2018/1472 ,  A61M2025/1052 ,  A61M2025/1072 ,  A61M2025/1086

    Abstract: A process for preventing atrial premature contractions originating within a pulmonary vein from being conducted into the left atrium of a human heart. More specifically, an ablation lesion is formed which electrically isolates the located source of the atrial premature contraction in the pulmonary vein from connection with the left atrium and blocks passage of the atrial premature contraction originating from the located source. In one embodiment, the steps of the process include advancing a medical device into the left atrium of a human heart, introducing the advanced medical device into the pulmonary vein from the left atrium of a human heart, sensing electrical activity within the pulmonary vein using the introduced medical device, locating a source of the atrial premature contraction within the pulmonary vein using the sensed electrical activity, and forming an ablation lesion in tissue of the pulmonary vein at a location proximal from the located source of the atrial premature contraction within the pulmonary vein. Conductive media and various medical devices may be used with the process.

    Abstract translation: 防止源自肺静脉的心房早发收缩进入人心脏左心房的过程。 更具体地，形成消融病变，其将肺静脉中的心房早发收缩的定位源与左心房的连接电隔离，并阻止源自定位的源的心房早发收缩的通过。 在一个实施例中，该过程的步骤包括将医疗装置推进人心脏的左心房，将先进的医疗装置从人心脏的左心房引入肺静脉，使用 引入医疗装置，使用感测到的电活动将肺静脉内的心房早收缩的来源定位，并且在肺静脉内的心房早收缩位置源附近的位置处形成肺静脉组织中的消融病变 。 可以使用导电介质和各种医疗装置。

    Ablation catheter
    27.
    发明授权
    Ablation catheter 有权
    消融导管

    公开(公告)号：US06605087B2

    公开(公告)日：2003-08-12

    申请号：US09906861

    申请日：2001-07-17

    Applicant: John F. Swartz ,  Michael C. Bednarek ,  Richard E. Stehr

    Inventor： John F. Swartz ,  Michael C. Bednarek ,  Richard E. Stehr

    IPC: A61B1818

    CPC classification number: A61B18/1492 ,  A61B2018/00148 ,  A61B2018/00291 ,  A61B2018/00839 ,  A61B2018/1253 ,  A61B2018/1472

    Abstract: An ablation catheter is disclosed having proximal and distal ends and an external surface, a lumen contained within the catheter body, a plurality of openings in the surface of the catheter, wherein the openings are in communication with the lumen, one or more electrodes secured within the catheter within the lumen and a source for conductive media to be introduced into the lumen to contact the electrode. The ablation catheter also may contain a conductive media flow control system which controls the flow of the conductive media through the openings in the surface of the catheter. Also disclosed is a process for ablation of human tissue which includes introducing an ablation catheter into the human body to a location to be ablated, passing a conductive media through a lumen of the catheter to contact one or more electrodes, passing the conductive media through the openings in the catheter body to contact the tissue to be ablated, and conducting energy from the electrode through the conductive media to the tissue for a sufficient period of time to ablate the tissue.

    Abstract translation: 公开了一种消融导管，其具有近端和远端以及外表面，容纳在导管主体内的内腔，导管表面中的多个开口，其中开口与内腔连通，一个或多个电极固定在内 内腔内的导管和用于导入内腔的导电介质的源以接触电极。 消融导管还可以包含导电介质流控制系统，其控制导电介质通过导管表面中的开口的流动。 还公开了一种消除人体组织的方法，其包括将消融导管引入人体内至要消融的位置，使导电介质通过导管的内腔以接触一个或多个电极，使导电介质通过 导管体中的开口以接触要消融的组织，并且将能量从电极通过导电介质传导到组织足够长的时间以烧蚀组织。

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