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    • 6. 发明申请
    • CATHETER FOR CIRCUMFERENTIAL ABLATION AT OR NEAR A PULMONARY VEIN
    • 用于在或接近肺动脉血管闭塞的导管
    • US20150133919A1
    • 2015-05-14
    • US14602060
    • 2015-01-21
    • Biosense Webster, Inc.
    • Benjamin D. McDanielDean M. Ponzi
    • A61B18/14
    • A61B18/1492A61B2018/00214A61B2018/00375A61B2018/00577
    • A catheter has a three-dimensional, hollow ablation assembly that carries at least one ribbon electrode for circumferential ablation. In one embodiment, the assembly has a free-form framework that is constructed of multiple tensile members or wires that are interwoven such that the length of the framework increases while the circumference of the framework decreases, and vice versa. The assembly can also have a self-expanding stent-type framework which is mounted on the expander. In another alternative embodiment, the framework is a tubular or cylindrical structure whose side wall has longitudinal slots between longitudinal slats for radial expansion to a greater circumference when the length is decreased. The flexible ribbon electrode on the assembly is elastic, or is pleated so that it folds when the framework is collapsed and unfolds when the framework is deployed.
    • 导管具有三维中空的消融组件,其携带至少一个用于周边消融的带状电极。 在一个实施例中,组件具有自由形式框架,其由多个拉伸构件或电线构成,所述多个拉伸构件或电线交织,使得框架的长度增加,而框架的周长减小,反之亦然。 组件还可以具有安装在膨胀机上的自膨胀支架型框架。 在另一替代实施例中,框架是管状或圆柱形结构,其侧壁在纵向板条之间具有纵向狭槽,用于当长度减小时径向膨胀到更大的圆周。 组件上的柔性带状电极是弹性的或被打褶的,使得当框架折叠并在框架展开时展开,折叠。