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29 条记录 (耗时 0.016 秒)

    High torque balloon catheter possessing multi-directional deflectability and methods thereof
    1.
    发明授权
    High torque balloon catheter possessing multi-directional deflectability and methods thereof 失效
    具有多方向偏转能力的高扭矩球囊导管及其方法

    公开(公告)号：US07171275B2

    公开(公告)日：2007-01-30

    申请号：US10647695

    申请日：2003-08-25

    申请人： Cary Hata ,  Alan de la Rama ,  Weng-Kwen Raymond Chia

    发明人： Cary Hata ,  Alan de la Rama ,  Weng-Kwen Raymond Chia

    IPC分类号： A61N1/00

    CPC分类号： A61N1/06

    摘要： A flexible catheter shaft with a balloon on the distal section suitable for inserting into a body of a patient comprising a deflectable, high torque transmission assembly of a slit tubular element that has either a plurality of rows of slits with anchors or at least one continuously spiraling slit on said slit tubular element and has sufficient bending and torque properties ensuring that a substantial fraction of the bending, rotational and displacement forces provided along said flexible catheter shaft are translated to bending, rotational and displacement forces at a distal end of said flexible catheter shaft, facilitating the placement of the catheter distal section and using the balloon for blocking the vessel ostium and injecting contrast medium through an open distal tip.

    摘要翻译： 一种柔性导管轴，其在远端部分上具有适于插入患者体内的气囊的柔性导管轴，其包括切口管状元件的可偏转的高扭矩传递组件，所述可变形的高扭矩传递组件具有多排具有锚的狭缝或至少一个连续螺旋 狭缝在所述狭缝管状元件上并且具有足够的弯曲和扭矩特性，确保沿所述柔性导管轴提供的弯曲，旋转和移位力的相当大的一部分平移到所述柔性导管轴的远端处的弯曲，旋转和移位力 促进导管远端部分的放置，并且使用气囊来阻塞血管口并通过开口的远端注入造影剂。

    High torque catheter possessing multi-directional deflectability and methods thereof
    2.
    发明授权
    High torque catheter possessing multi-directional deflectability and methods thereof 有权
    具有多方向偏转能力的高扭矩导管及其方法

    公开(公告)号：US06611720B2

    公开(公告)日：2003-08-26

    申请号：US09878689

    申请日：2001-06-11

    申请人： Cary Hata ,  Alan de La Rama ,  Weng-Kwen Raymond Chia

    发明人： Cary Hata ,  Alan de La Rama ,  Weng-Kwen Raymond Chia

    IPC分类号： A61N100

    CPC分类号： A61N1/06

    摘要： A flexible catheter shaft suitable for inserting into a body of a patient comprising a deflectable, high torque transmission assembly of a slit tubular element that has either a plurality of rows of slits with anchors or at least one continuously spiraling slit on said slit tubular element and has sufficient bending and torque properties ensuring that a substantial fraction of the bending, rotational and displacement forces provided along said flexible catheter shaft are translated to bending, rotational and displacement forces at a distal end of said flexible catheter shaft.

    摘要翻译： 适于插入患者体内的柔性导管轴，包括可折叠的高扭矩传递组件，其具有狭缝管状元件，该狭缝管状元件具有多排带狭缝的狭缝或在所述狭缝管状元件上具有至少一个连续螺旋狭缝， 具有足够的弯曲和扭矩特性，确保沿着所述柔性导管轴提供的弯曲，旋转和位移力的相当大的一部分平移到所述柔性导管轴的远端处的弯曲，旋转和移位力。

    Ablation apparatus with ultrasonic imaging capabilities
    6.
    发明授权
    Ablation apparatus with ultrasonic imaging capabilities 失效
    消融装置具有超声成像能力

    公开(公告)号：US5876340A

    公开(公告)日：1999-03-02

    申请号：US840905

    申请日：1997-04-17

    申请人： Hosheng Tu ,  Weng-Kwen Raymond Chia

    发明人： Hosheng Tu ,  Weng-Kwen Raymond Chia

    IPC分类号： A61B18/14 ,  A61B8/00 ,  A61B17/39

    CPC分类号： A61B18/1492 ,  A61B18/1815 ,  A61B2018/00404 ,  A61B2018/00791 ,  A61B2018/0091 ,  A61B2018/1412 ,  A61B2090/3782 ,  A61B2090/3925

    摘要： An RF ablation apparatus has a delivery catheter with distal and proximal ends. A handle is attached to the proximal end of the delivery catheter. The delivery catheter has an electrode deployment means where said electrode deployment means includes a retractable tip section comprising a deployable electrode with portion of one side having a sharp edge. The tip section has a non-deployed state when it is positioned in the delivery catheter. On the other hand, the tip section has a distended deployed state when it is advanced out of the distal end of said delivery catheter. The deployed tip section has a preformed shape while the farther distal deployed electrode defines an ablation target along with portion of the forward side having a sharp edge on said electrode. The forward edge of the deployed electrode has a slightly curvature or an essentially straight shape. Said deployable electrode has ultrasonic imaging capabilities.

    摘要翻译： RF消融装置具有远端和近端的输送导管。 手柄附接到输送导管的近端。 输送导管具有电极展开装置，其中所述电极展开装置包括可伸缩末端部分，其包括具有尖锐边缘的一侧部分的可展开电极。 当尖端部分定位在输送导管中时，该尖端部分具有非展开状态。 另一方面，当尖端部分从所述输送导管的远端推出时，其具有扩张展开状态。 所展开的尖端部分具有预成型形状，而较远的远侧展开电极限定了消融靶，同时前向侧的部分在所述电极上具有尖锐边缘。 所展开的电极的前边缘具有略微曲率或基本上直的形状。 所述可展开电极具有超声成像能力。

    Catheter system having a ball electrode
    9.
    发明授权
    Catheter system having a ball electrode 失效
    具有球电极的导管系统

    公开(公告)号：US5843152A

    公开(公告)日：1998-12-01

    申请号：US867469

    申请日：1997-06-02

    申请人： Hosheng Tu ,  Weng-Kwen Raymond Chia

    发明人： Hosheng Tu ,  Weng-Kwen Raymond Chia

    IPC分类号： A61B18/14 ,  A61N1/06 ,  A61N1/40

    CPC分类号： A61N1/403 ,  A61B18/1492 ,  A61N1/06 ,  A61B2017/003 ,  A61B2018/00029 ,  A61B2018/00351 ,  A61B2018/00357 ,  A61B2018/00559 ,  A61B2018/00577 ,  A61B2018/00815 ,  A61B2018/00821 ,  A61B2018/1417

    摘要： An improved catheter system having at least one electrode at its tip section, can be used in ablating the arrhythmogenic point of a patient. A catheter suitable for radiofrequency ablation of cardiac tissues comprises a catheter shaft having a distal section, a distal end, a proximal end and at least one lumen extending therebetween, wherein a rotatable ball electrode is disposed at the tip section of said catheter. In one embodiment, the ablation catheter has a temperature sensor and a close-loop temperature control mechanism. In another embodiment, the ablation catheter has fluid infusion and irrigation means at its distal tip section for creating a deep and large lesion by applying radiofrequency energy and cooled fluid to said electrode.

    摘要翻译： 在其尖端部分具有至少一个电极的改进的导管系统可用于消除患者的致心律失常点。 适用于心脏组织射频消融的导管包括导管轴，其具有远侧部分，远端，近端和在其间延伸的至少一个内腔，其中可旋转的球形电极设置在所述导管的尖端部分。 在一个实施例中，消融导管具有温度传感器和闭环温度控制机构。 在另一个实施例中，消融导管在其远侧末端部分具有流体输注和冲洗装置，用于通过将射频能量和冷却流体施加到所述电极来产生深而大的损伤。