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    • 10. 发明授权
    • Heart wall ablation/mapping catheter and method
    • 心壁消融/测绘导管及方法
    • US06926669B1
    • 2005-08-09
    • US09685193
    • 2000-10-10
    • Mark T. StewartJohnson E. GoodeJames M. SpeckienMark A. TaubeEduardo N. Warman
    • Mark T. StewartJohnson E. GoodeJames M. SpeckienMark A. TaubeEduardo N. Warman
    • A61B17/00A61B18/14A61M25/01A61B8/00
    • A61M25/0147A61B18/1492A61B2017/00243A61B2018/00916A61M25/0152A61M2025/015A61M2025/0161
    • Steerable electrophysiology catheters for use in mapping and/or ablation of accessory pathways in myocardial tissue of the heart wall and methods of use thereof are disclosed. The catheter comprises a catheter body and handle, the catheter body having a proximal section and a distal section and manipulators that enable the deflection of a distal segment of the distal tip section with respect to the independently formed curvature of a proximal segment of the distal tip section through a bending or knuckle motion of an intermediate segment between the proximal and distal segments. A wide angular range of deflection within a very small curve or bend radius in the intermediate segment is obtained. At least one distal tip electrode is preferably confined to the distal segment which can have a straight axis extending distally from the intermediate segment. The curvature of the proximal segment and the bending angle of the intermediate segment are independently selectable. The axial alignment of the distal segment with respect to the nominal axis of the proximal shaft section of the catheter body can be varied between substantially axially aligned (0° curvature) in an abrupt knuckle bend through a range of about −90° to about +180° within a bending radius of between about 2.0 mm and 7.0 mm and preferably less than 5.0 mm. The proximal segment curve can be independently formed in a about +180° through about +270° with respect to the axis of the proximal shaft section to provide an optimum angular orientation of the distal electrode(s). The distal segment can comprise a highly flexible elongated distal segment body and electrode(s) that conform with the shape and curvature of the heart wall.
    • 公开了用于在心壁的心肌组织中辅助通路的测绘和/或消融的可操纵的电生理学导管及其使用方法。 导管包括导管主体和手柄,导管主体具有近端部分和远端部分以及操纵器,其能够相对于远端尖端的近端段的独立形成的曲率偏转远侧末端部分的远端部分 通过近端段和远端段之间的中间段的弯曲或转向关节运动。 获得在中间段内的非常小的曲线或弯曲半径内的宽的角度范围的偏转。 至少一个远端末端电极优选地限制在远端段,该远段可以具有从中间段向远侧延伸的直轴。 近端段的曲率和中间段的弯曲角度是可独立选择的。 远侧段相对于导管主体的近端轴部分的标称轴线的轴向对准可以在突变关节弯曲部中的大致轴向对准(0°曲率)之间变化约-90°至约+ 弯曲半径为约2.0mm至7.0mm,优选小于5.0mm的180°。 近端段曲线可相对于近轴部分的轴线独立地形成在约-180°至约+ 270°的范围内,以提供远端电极的最佳角度取向。 远端段可以包括高度柔性的细长远端段体和符合心壁的形状和曲率的电极。