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156 条记录 (耗时 0.049 秒)

    PMR catheter
    83.
    发明授权
    PMR catheter 有权

    公开(公告)号：US06217575B1

    公开(公告)日：2001-04-17

    申请号：US09256831

    申请日：1999-02-24

    申请人： Lauri DeVore ,  Bryan Kinsella

    发明人： Lauri DeVore ,  Bryan Kinsella

    IPC分类号： A61B1814

    CPC分类号： A61B18/1492 ,  A61B2017/00247 ,  A61B2018/00392

    摘要： Devices and methods for performing percutaneous myocardial revascularization (PMR). A catheter in accordance with the invention includes an elongate shaft having a proximal end and a distal end. The elongate shaft defines a lumen, and a conductor is disposed inside the lumen. An electrode portion is formed by the bent portion of the conductor which extends from the distal end of the elongate shaft. A method in accordance with the present invention may be used to form a wound through the endocardium and into the myocardium of a patient's heart. Collateral damage to the myocardium may be created by infusing pressurized fluid into the wound. A number of fluids may be delivered to a location proximate the wound via the catheter.

    Bipolar electrosurgical scissors
    86.
    发明授权
    Bipolar electrosurgical scissors 失效
    双极电外科剪刀

    公开(公告)号：US06179837B2

    公开(公告)日：2001-01-30

    申请号：US08399421

    申请日：1995-03-07

    申请人： Michael D. Hooven

    发明人： Michael D. Hooven

    IPC分类号： A61B1814

    CPC分类号： A61B18/1445 ,  A61B18/1815 ,  A61B2017/0088 ,  A61B2017/2945 ,  A61B2018/00107 ,  A61B2018/00136 ,  A61B2018/126 ,  A61B2018/1412 ,  A61B2018/1432 ,  A61B2018/146 ,  A61B2018/1861

    摘要： Bipolar electrosurgical scissors are disclosed having a pair of blades joined for relative movement in a scissor-like action between open and closed positions. At least one of the blades comprises a tissue contacting surface and first and second spaced apart electrodes extending along the surface. Current flow between the first and second electrodes promotes hemostasis in tissue contacting the surface. Preferably, each blade of the scissors includes first and second spaced-apart electrodes.

    摘要翻译： 公开了双极电外科剪刀，其具有一对刀片，其在打开和关闭位置之间以类似剪刀的动作相对运动。 叶片中的至少一个包括组织接触表面和沿表面延伸的第一和第二间隔开的电极。 第一和第二电极之间的电流促进接触表面的组织的止血。 优选地，剪刀的每个刀片包括第一和第二间隔开的电极。

    Ablation catheter and method for isolating a pulmonary vein
    88.
    发明授权
    Ablation catheter and method for isolating a pulmonary vein 有权
    消融导管和隔离肺静脉的方法

    公开(公告)号：US06773433B2

    公开(公告)日：2004-08-10

    申请号：US10414757

    申请日：2003-04-16

    申请人： Mark T. Stewart ,  William J. Flickinger ,  David E. Francischelli ,  Rahul Mehra ,  Xiaoyi Min

    发明人： Mark T. Stewart ,  William J. Flickinger ,  David E. Francischelli ,  Rahul Mehra ,  Xiaoyi Min

    IPC分类号： A61B1814

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

    摘要： A catheter assembly and method for treatment of cardiac arrhythmia, for example, atrial fibrillation, by electrically isolating a vessel, such as a pulmonary vein, from a chamber, such as the left atrium. The catheter assembly includes a catheter body and at least one electrode. 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 forms a substantially closed loop transverse to the longitudinal axis. The at least one electrode is disposed along the loop. With this configuration, the loop is axially directed into contact with the chamber wall about the vessel ostium. Upon energization, the electrode ablates a continuous lesion pattern about the vessel ostium, thereby electrically isolating the vessel from the chamber.

    摘要翻译： 一种用于治疗心律失常（例如心房颤动）的导管组件和方法，通过诸如左心房的腔室电隔离血管（例如肺静脉）。 导管组件包括导管主体和至少一个电极。 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形成横向于纵向轴线的基本上闭合的环。 沿着环设置至少一个电极。 利用这种构造，环路被轴向地指向与容器孔周围的室壁接触。 在通电时，电极消除围绕血管口的连续病变图案，从而将容器与腔室电隔离。

    Medical device having a cooled end effector
    90.
    发明授权
    Medical device having a cooled end effector 有权
    具有冷却末端执行器的医疗装置

    公开(公告)号：US06733501B2

    公开(公告)日：2004-05-11

    申请号：US10289520

    申请日：2002-11-06

    申请人： Andy Levine

    发明人： Andy Levine

    IPC分类号： A61B1814

    CPC分类号： A61B18/1402 ,  A61B2018/00005 ,  A61B2018/1253

    摘要： An electrosurgical device has an electrode and a heat pipe to conduct heat from the electrodes where substantially all heat conducted from the electrode through the heat pipe is dissipated along the length of the heat pipe. The heat pipe can have a thermal time constant less than 60 seconds and preferably less than 30 seconds.

    摘要翻译： 电外科装置具有电极和热管，用于从电极传导热量，其中基本上从电极通过热管传导的所有热量沿着热管的长度消散。 热管可以具有小于60秒，优选小于30秒的热时间常数。