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    • 3. 发明授权
    • Spring-tip, flexible electrode catheter for tissue ablation
    • 弹簧尖端,柔性电极导管用于组织消融
    • US07311704B2
    • 2007-12-25
    • US10856904
    • 2004-05-27
    • Saurav PaulKedar Ravindra BelheHong CaoJohn Avi RoopChou Thao
    • Saurav PaulKedar Ravindra BelheHong CaoJohn Avi RoopChou Thao
    • A61B18/18
    • A61B18/1492A61B2018/143A61B2018/1435
    • A spring-tip, flexible electrode, and a method for using that electrode for tissue ablation, are disclosed. The spring-tip, flexible electrode comprises an enshrouded flexible electrode (e.g., an enshrouded plurality of flexible brush filaments or bristles) for applying ablative energy (e.g., RF energy) to target tissue during the formation of spot or continuous linear lesions. The spring of the spring tip may comprise compressible coils, compressible mesh, or compressible bellows, among other things. The spring provides axial suspension and is capable of axial compression and extension, and is flexible enough for deflection and bending. The axial suspension of the spring tip facilitates the desired contact between the electrode and the tissue surface. A shielded, spring-tip, flexible electrode is also disclosed, and includes a flexible nipple or shield. The spring-tip, flexible electrode facilitates enhanced tissue contact in difficult environments (e.g., during ablation of a contoured or trabeculated surface inside a beating heart) since the flexible electrode readily conforms to surface contours while the bending stress of the spring enhances the contract pressure on the tissue.
    • 公开了一种弹簧尖端,柔性电极和用于组织消融使用该电极的方法。 弹簧尖端的柔性电极包括用于在形成斑点或连续的线性损伤期间向目标组织施加消融能量(例如,RF能量)的带有屏蔽的柔性电极(例如,被包围的多个柔性刷丝或刷毛)。 弹簧尖端的弹簧可以包括可压缩线圈,可压缩网或可压缩波纹管等等。 弹簧提供轴向悬挂并且能够轴向压缩和伸展,并且具有足够的挠性和弯曲性。 弹簧顶端的轴向悬挂有助于电极和组织表面之间的所需接触。 还公开了屏蔽的弹簧尖端柔性电极,并且包括柔性接头或屏蔽。 弹簧尖端的柔性电极有助于在困难的环境中(例如在跳动心脏内的轮廓或小梁表面的消融期间)增强组织接触,因为柔性电极容易符合表面轮廓,同时弹簧的弯曲应力增加了收缩压力 在纸巾上。
    • 6. 发明授权
    • Contact-sensitive pressure-sensitive conductive composite electrode and method for ablation
    • 接触敏感的压敏导电复合电极及其消融方法
    • US07883508B2
    • 2011-02-08
    • US11647294
    • 2006-12-29
    • Chou ThaoSaurav PaulKedar Ravindra BelheHong Cao
    • Chou ThaoSaurav PaulKedar Ravindra BelheHong Cao
    • A61B18/18
    • A61B18/1492A61B2018/00577A61B2018/00702A61B2090/064
    • A catheter assembly for pressure-sensitive control of ablation treatment is disclosed. The assembly includes a conductive element, an electrode, and a pressure sensitive conductive composite member positioned between the conductive element and the electrode. At least one of the conductive pin, the pressure sensitive conductive composite element and the ablation electrode are moveable to create an engagement position and a non-engagement position. In the engagement position, the elements are electrically coupled such that ablation energy may be delivered from the conductive pin to the ablation electrode via the pressure sensitive conductive composite element. In the non-engagement position, the elements are electrically decoupled such that ablation energy is not delivered to the ablation electrode. A related method for pressure-sensitive control of ablation is also disclosed.
    • 公开了一种用于消融治疗的压敏控制的导管组件。 组件包括导电元件,电极和位于导电元件和电极之间的压敏导电复合元件。 导电针,压敏导电复合元件和消融电极中的至少一个可移动以产生接合位置和非接合位置。 在接合位置,元件被电耦合,使得消融能量可以经由压敏导电复合元件从导电引脚传送到消融电极。 在非接合位置,元件被电去耦合,使得消融能量不被输送到消融电极。 还公开了一种用于消融的压敏控制的相关方法。