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公开(公告)号：US06190382B1
公开(公告)日：2001-02-20
申请号：US09211188
申请日：1998-12-14
IPC分类号： A61B1804
CPC分类号： A61B18/18 , A61B18/1492 , A61B18/1815 , A61B90/39 , A61B2017/003 , A61B2018/00839 , A61B2018/1407 , A61B2018/1437 , A61B2018/1861
摘要： An improved radio-frequency catheter system for ablating biological tissues of a body vessel in a patient including a catheter, a deployable antenna guide disposed at the distal portion of the catheter and a radio-frequency (“RF”) antenna mounted on the antenna guide. The RF antenna includes a helical coil which defines an axial passageway to accommodate the antenna guide, and is adapted to receive and transmit RF energy for tissue ablation. Upon deployment, the antenna guide acquires a loop configuration which establishes line contact with the body vessel conformable to its internal contour to prescribe the precise and affixed tissue ablation pathway despite body vessel movements. The RF antenna is carried by the antenna guide to be deployed along the established tissue ablation pathway. Alignment of the loop with the desired tissue ablation pathway is facilitated with the use of radio-opaque markers and intracardiac electrodes mounted along the antenna guide. The catheter system is provided with steering mechanism for navigation through the body vessel passageways.
摘要翻译： 一种用于消除患者体内血管的生物组织的改进的射频导管系统，包括导管，布置在导管的远端部分的可展开天线引导件和安装在天线导向器上的射频（“RF”）天线 。 RF天线包括螺旋线圈，其限定用于容纳天线引导件的轴向通道，并且适于接收和发送用于组织消融的RF能量。 在部署时，天线引导件获得环路配置，其与身体容器建立线接触，其符合其内部轮廓，以规定精确且固定的组织消融路径，尽管身体血管移动。 RF天线由天线引导器携带，沿着建立的组织消融路径进行部署。 通过使用沿着天线导向器安装的不透射线的标记和心内电极，便于环路与期望的组织消融路径的对准。 导管系统设置有用于通过身体血管通道导航的转向机构。
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公开(公告)号：US20110130750A1
公开(公告)日：2011-06-02
申请号：US12953879
申请日：2010-11-24
IPC分类号： A61B18/18
CPC分类号： A61B18/1815 , A61B2018/00196 , A61B2018/1853 , A61B2018/1861 , A61B2034/2051
摘要： An RF ablation system has a hollow conductive coaxial cable comprising inner and outer coaxial tubular conductors, and an ablating member mounted at the distal end portion of the cable for delivery of radio frequency energy including microwaves to the target body tissue. The inner conductor has a central lumen and extends at least up to the ablating member. At least one electromagnetic tracking sensor coil with a magnetic core is located in the central lumen at the distal end portion of the cable, close to the distal tip of the cable, and connected to a signal processing unit. An electromagnetic field generator positioned in the vicinity of a patient undergoing treatment generates an electromagnetic field which induces a voltage in the sensor coil. The signal processing unit uses the induced voltage to calculate the position and orientation of the distal end portion or tip of the catheter in a patient's body.
摘要翻译： RF消融系统具有中空的导电同轴电缆，其包括内部和外部同轴管状导体，以及安装在电缆的远端部分处的消融部件，用于将包含微波的无线电频率能量传送到目标身体组织。 内部导体具有中心腔并至少延伸至烧蚀构件。 具有磁芯的至少一个电磁跟踪传感器线圈位于电缆的远端部分的中央腔内，靠近电缆的远端，并连接到信号处理单元。 位于接受治疗的患者附近的电磁场发生器产生感应线圈中的电压的电磁场。 信号处理单元使用感应电压来计算导管在患者体内的远端部分或尖端的位置和取向。
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公开(公告)号：US09039698B2
公开(公告)日：2015-05-26
申请号：US12953879
申请日：2010-11-24
CPC分类号： A61B18/1815 , A61B2018/00196 , A61B2018/1853 , A61B2018/1861 , A61B2034/2051
摘要： An RF ablation system has a hollow conductive coaxial cable comprising inner and outer coaxial tubular conductors, and an ablating member mounted at the distal end portion of the cable for delivery of radio frequency energy including microwaves to the target body tissue. The inner conductor has a central lumen and extends at least up to the ablating member. At least one electromagnetic tracking sensor coil with a magnetic core is located in the central lumen at the distal end portion of the cable, close to the distal tip of the cable, and connected to a signal processing unit. An electromagnetic field generator positioned in the vicinity of a patient undergoing treatment generates an electromagnetic field which induces a voltage in the sensor coil. The signal processing unit uses the induced voltage to calculate the position and orientation of the distal end portion or tip of the catheter in a patient's body.
摘要翻译： RF消融系统具有中空的导电同轴电缆，其包括内部和外部同轴管状导体，以及安装在电缆的远端部分处的消融部件，用于将包含微波的无线电频率能量传送到目标身体组织。 内部导体具有中心腔并至少延伸至烧蚀构件。 具有磁芯的至少一个电磁跟踪传感器线圈位于电缆的远端部分的中央腔内，靠近电缆的远端，并连接到信号处理单元。 位于接受治疗的患者附近的电磁场发生器产生感应线圈中的电压的电磁场。 信号处理单元使用感应电压来计算导管在患者体内的远端部分或尖端的位置和取向。
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