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    • 62. 发明授权
    • Trans-septal catheter with retention mechanism
    • 间隔导管与保留机制
    • US08096959B2
    • 2012-01-17
    • US11923320
    • 2007-10-24
    • Mark T. StewartDavid E. FrancischelliJames R. Skarda
    • Mark T. StewartDavid E. FrancischelliJames R. Skarda
    • A61B17/88
    • A61B17/00234A61B2017/00252A61M25/10
    • A trans-septal guide catheter for providing access through the septum separating a first heart chamber from a second heart chamber that includes an elongated guide catheter body extending between guide catheter proximal and distal ends. A distal segment of the guide catheter is adapted to be inserted through the septum to locate the distal segment of the guide catheter within one of the first heart chamber and the second heart chamber. The catheter body encloses a guide catheter lumen adapted to provide access into the one of the first heart chamber and the second heart chamber through a guide catheter lumen proximal end opening and a guide catheter lumen distal end opening. A retention mechanism engages the septum and maintains the distal segment of the guide catheter extending into the one of the first heart chamber and the second heart chamber.
    • 一种反间隔导引导管,用于提供通过将第一心室与第二心室隔开的隔膜的通路,该第二心室包括在引导导管近端和远端之间延伸的细长引导导管主体。 引导导管的远侧部分适于插入穿过隔膜以将引导导管的远侧部分定位在第一心室和第二心室之一内。 导管主体包围引导导管内腔,其适于通过引导导管内腔近端开口和引导导管内腔远端开口提供通向第一心室和第二心室之一的通路。 保持机构接合隔膜并且保持引导导管的远端段延伸到第一心室和第二心室中的一个。
    • 67. 发明授权
    • Device and method for ablation of cardiac tissue
    • 心脏组织消融的装置和方法
    • US07294143B2
    • 2007-11-13
    • US10356868
    • 2003-02-03
    • David E. Francischelli
    • David E. Francischelli
    • A61F7/00A61B18/18
    • A61B18/1402A61B2018/00809A61B2018/1472
    • Methods for delivering precise amounts of fluid into cardiac tissue for the purpose of facilitating ablation of the tissue along a desired lesion line. One method injects fluid through a hollow needle. The injected fluid can be a highly conductive fluid injected in conjunction with radiofrequency ablation to create an ablative virtual electrode. The injected conductive fluid can provide deeper and narrower conduction paths and resulting lesions. Radiofrequency ablation can be performed at the same time as the fluid injection, using the injection device as an electrode, or subsequent to the fluid injection, using a separate device. In some methods, the injected fluid is a protective fluid, injected to protect tissue adjacent to the desired lesion line. Fluid delivery can be endocardial, epicardial, and epicardial on a beating heart. The present methods find one use in performing maze procedures to treat atrial fibrillation.
    • 用于将精确量的流体输送到心脏组织中以便于沿着期望的损伤线消融组织的方法。 一种方法通过中空针头注入流体。 注射的流体可以是与射频消融一起注入的高导电流体,以产生消融的虚拟电极。 注射的导电流体可以提供更深和更窄的传导路径和所导致的损伤。 射频消融可以在使用注射装置作为电极或在流体注射之后使用单独的装置与流体注射同时进行。 在一些方法中,注射的流体是保护性流体,被注射以保护邻近所需病变线的组织。 流体输送可以是搏动心脏的心内膜,心外膜和心外膜。 本方法可用于进行迷宫手术来治疗房颤。