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    Ablation catheter assembly with radially decreasing helix and method of use
    55.
    发明授权
    Ablation catheter assembly with radially decreasing helix and method of use 有权
    消融导管组件具有径向减小的螺旋和使用方法

    公开(公告)号：US07771421B2

    公开(公告)日：2010-08-10

    申请号：US10655197

    申请日：2003-09-04

    申请人： Mark T. Stewart ,  James R. Skarda

    发明人： Mark T. Stewart ,  James R. Skarda

    IPC分类号： A61B18/14

    CPC分类号： A61B18/1492 ,  A61B2017/00044 ,  A61B2017/00243 ,  A61B2017/00867 ,  A61B2018/00065 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00351 ,  A61B2018/00375 ,  A61B2018/00404 ,  A61B2018/00898 ,  A61B2018/1407 ,  A61B2018/1435 ,  A61B2018/1472

    摘要： A catheter assembly for treatment of cardiac arrhythmia. The catheter assembly includes a catheter body and an ablative energy source. The catheter body includes a proximal portion, an intermediate portion, and a distal portion. The intermediate portion extends from the proximal portion and defines a longitudinal axis. The distal portion extends from the intermediate portion and includes an ablation section and a tip. The ablation section forms a loop defining a diameter greater than an outer dimension of a pulmonary vein ostium. The tip extends distally from the ablation section and is configured to locate a pulmonary vein. Finally, the ablative energy source is associated with the ablation section. With this configuration, upon activation of the energy source, the ablation section ablates a desired lesion pattern. In one preferred embodiment, the ablation section forms a distally decreasing radius helix, whereas the tip includes a relatively linear leader section. With this one preferred configuration, the tip readily locates a pulmonary vein and guides the ablation section to a seated relationship about a pulmonary vein ostium (or extra-ostial).

    摘要翻译： 用于治疗心律失常的导管组件。 导管组件包括导管主体和消融能源。 导管主体包括近端部分，中间部分和远端部分。 中间部分从近端部分延伸并且限定纵向轴线。 远侧部分从中间部分延伸并且包括消融部分和尖端。 消融部分形成限定直径大于肺静脉口的外部尺寸的环。 尖端从消融部分向远端延伸并且被配置为定位肺静脉。 最后，烧蚀能源与消融部分相关联。 利用这种配置，在激活能量源时，消融部分消除所需的损伤模式。 在一个优选实施例中，消融部分形成远端减小的半径螺旋，而尖端包括相对线性的引导部分。 利用这一优选的构造，尖端容易地定位肺静脉，并将消融部分引导到关于肺静脉口（或口外）的就座关系。

    METHOD AND SYSTEM FOR PLACEMENT OF ELECTRICAL LEAD INSIDE HEART
    56.
    发明申请
    METHOD AND SYSTEM FOR PLACEMENT OF ELECTRICAL LEAD INSIDE HEART 有权
    电子导管内心放置方法及系统

    公开(公告)号：US20100042110A1

    公开(公告)日：2010-02-18

    申请号：US12570390

    申请日：2009-09-30

    申请人： James F. Kelley ,  Zhongping C. Yang ,  Mark T. Stewart

    发明人： James F. Kelley ,  Zhongping C. Yang ,  Mark T. Stewart

    IPC分类号： A61B17/00

    CPC分类号： A61N1/059 ,  A61B17/12 ,  A61B17/12009 ,  A61B17/128 ,  A61B17/3468 ,  A61B2017/00247 ,  A61B2017/12018 ,  A61B2018/00392

    摘要： A method of placing an electrical lead of an implantable cardiac device inside a heart of a patient. The method includes securing a tool to an atrial appendage of the heart to hold onto the atrial appendage, piercing the atrial appendage, and creating an aperture in the atrial appendage while holding the atrial appendage with the tool. The method also includes moving a distal end of the electrical lead into the heart through the aperture in the atrial appendage and into a ventricle of the heart. Furthermore, the method includes coupling the distal end of the electrical lead to cardiac tissue in the ventricle and delivering an electrical signal to the cardiac tissue in the ventricle of the heart to maintain a predetermined heartbeat of the heart.

    摘要翻译： 将可植入心脏装置的电引线放置在患者心脏内的方法。 该方法包括将工具固定到心脏的心房附着物，以固定在心房附近，刺穿心房附件，以及在用该工具持有心房附件的同时创建心房附近的孔。 该方法还包括通过心耳中的孔将电引线的远端移动到心脏中并进入心脏的心室。 此外，该方法包括将电导线的远端耦合到心室中的心脏组织，并将电信号传送到心脏心室的心脏组织以维持心脏的预定心跳。

    Ablation catheter assembly and method for isolating a pulmonary vein
    57.
    发明授权
    Ablation catheter assembly and method for isolating a pulmonary vein 有权
    消融导管装置及隔离肺静脉的方法

    公开(公告)号：US07285119B2

    公开(公告)日：2007-10-23

    申请号：US10689112

    申请日：2003-10-20

    申请人： Mark T. Stewart ,  James R. Skarda

    发明人： Mark T. Stewart ,  James R. Skarda

    IPC分类号： A61B18/14

    CPC分类号： A61B18/1492 ,  A61B2017/00044 ,  A61B2017/00243 ,  A61B2017/00867 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00351 ,  A61B2018/00375 ,  A61B2018/1407 ,  A61B2018/1435

    摘要： A catheter body includes a proximal portion, an intermediate portion extending from the proximal portion and defining a longitudinal axis, and a distal portion extending from the intermediate portion and terminated by a distal end of the catheter body; the distal portion forms a coil about a central loop axis, which is substantially parallel to the longitudinal axis. A first lumen extends through the proximal and intermediate portions of the catheter body and is terminated at an opening proximal to an ablation section, which is formed along the coil.

    摘要翻译： 导管主体包括近端部分，从近侧部分延伸并限定纵向轴线的中间部分，以及从中间部分延伸并由导管主体的远端端接的远侧部分; 远侧部分围绕基本上平行于纵向轴线的中心环轴线形成线圈。 第一腔延伸穿过导管主体的近端部分和中间部分，并且在靠近沿着线圈形成的消融部分的开口处终止。

    Extractable implantable medical lead
    59.
    发明授权
    Extractable implantable medical lead 有权
    可提取植入式医用铅

    公开(公告)号：US06801809B2

    公开(公告)日：2004-10-05

    申请号：US09854999

    申请日：2001-05-14

    申请人： Timothy G. Laske ,  Steven L. Waldhauser ,  Mark T. Stewart ,  Catherine E. Taylor ,  Kenneth W. Keeney

    发明人： Timothy G. Laske ,  Steven L. Waldhauser ,  Mark T. Stewart ,  Catherine E. Taylor ,  Kenneth W. Keeney

    IPC分类号： A61N105

    CPC分类号： A61N1/056 ,  A61N2001/0578

    摘要： A medical electrical lead with a tip-ring assembly optimized to resist damage during extraction. The lead includes an elongated plastic tube and at least two elongated conductors mounted in the plastic tube. A tip-ring assembly is mounted to the distal end of the tube, the tip-ring assembly including a ring electrode coupled to one of the conductors, a tip electrode located distal to the ring electrode and coupled to another of the conductors and two molded plastic components separately fabricated of a plastic harder than the plastic tube, adhered to one another and together defining a circumferential groove in which the ring electrode is located and mechanically coupled to the tip electrode. The tip electrode may be provided with a proximally extending electrode shank covered by a tine sleeve which is fabricated of a plastic softer than the molded plastic components and is adhered to more distally located molded plastic component. The more distally located molded plastic component preferably overlaps the electrode shank to provide a stronger structure.

    摘要翻译： 具有尖端环组件的医疗电气引线，优化以防止在提取期间的损坏。 引线包括细长塑料管和安装在塑料管中的至少两根细长导体。 尖端环组件安装到管的远端，尖端环组件包括耦合到一个导体的环形电极，位于环形电极远侧并连接到另一个导体的尖端电极，以及两个模制 分别由比塑料管更硬的塑料制成的塑料部件彼此粘合在一起并且一起形成环形电极所在的并且机械地联接到尖端电极的周向槽。 尖端电极可以设置有由齿形套筒覆盖的近端延伸的电极柄，其由比模制的塑料部件更软的塑料制成并且被粘附到更远端定位的模制塑料部件上。 更远端定位的模制塑料部件优选地与电极柄重叠以提供更强的结构。