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    Endoscope for direct visualization of the spine and epidural space
    41.
    发明授权
    Endoscope for direct visualization of the spine and epidural space 失效
    内窥镜用于直接观察脊柱和硬膜外腔

    公开(公告)号：US5396880A

    公开(公告)日：1995-03-14

    申请号：US865349

    申请日：1992-04-08

    申请人： Jonathan Kagan ,  Roger White ,  David L. Brumfield

    发明人： Jonathan Kagan ,  Roger White ,  David L. Brumfield

    IPC分类号： A61B1/00 ,  A61B1/005 ,  A61B1/04 ,  A61B1/313 ,  A61B5/03 ,  A61B1/06 ,  A61M25/00

    CPC分类号： A61B1/0051 ,  A61B1/042 ,  A61B1/3135 ,  A61B5/032

    摘要： A system for direct visualization of the spine and the epidural and/or intra-discal space to facilitate diagnosis and treatment of spinal conditions and that is adapted for percutaneous introduction into the spinal space. The system includes a disposable flexible catheter, a fiber-optic bundle disposed within the catheter which is connected to a light source and camera. The bundle is removably and adjustably connected to the proximal end of the catheter to permit rotation of the bundle relative to the catheter. A mechanism for controllably deflecting the tip of the catheter is provided to vary the viewing angle of the fiber-optic bundle within and to assist in steering the catheter through the spinal space. The mechanism includes a deflection wire extending through the catheter and affixed at the distal end thereof. The proximal end of the deflection wire is affixed to a sleeve which is slidably disposed around the catheter and within a housing. The housing includes an internal flange that defines a stop surface which is contacted by the sleeve as the catheter and deflection wire is moved in a first direction. After the sleeve contacts the stop surface, further movement of the catheter in the first direction causes tension in the wire between the sleeve and the wire's securement to the catheter, thereby bending the catheter tip in the direction of the securement. The catheter can be rotated with the tip in its deflected position to provide a conical viewing region within the spinal space.

    摘要翻译： 用于脊柱和硬膜外和/或椎间盘内空间的直接可视化的系统，以便于脊柱状况的诊断和治疗，并适于经皮引入脊柱空间。 该系统包括一次性柔性导管，布置在导管内的光纤束，其连接到光源和照相机。 束可拆卸地并且可调节地连接到导管的近端以允许束相对于导管旋转。 提供用于可控地偏转导管的尖端的机构以改变光纤束的视角并帮助将导管转向脊柱空间。 该机构包括延伸穿过导管并固定在其远端的偏转线。 偏转线的近端固定到套筒上，该套筒可滑动地设置在导管周围并在壳体内。 壳体包括内部凸缘，其限定当导管和挠曲线沿第一方向移动时由套筒接触的止动表面。 在套筒接触止动表面之后，导管在第一方向上的进一步运动导致套管和电线固定到导管之间的线中的张力，从而沿着固定方向弯曲导管尖端。 导管可以随着尖端在其偏转位置旋转以在脊柱空间内提供锥形观察区域。

    Filtered hub device for aspirating and injecting liquids
    42.
    发明授权
    Filtered hub device for aspirating and injecting liquids 失效
    用于吸入和注射液体的过滤式集线器

    公开(公告)号：US4391274A

    公开(公告)日：1983-07-05

    申请号：US277475

    申请日：1981-06-26

    申请人： Jonathan Kagan

    发明人： Jonathan Kagan

    IPC分类号： A61M5/165 ,  A61M5/00

    CPC分类号： A61M5/165

    摘要： A hub device for use in transferring liquids therethrough in opposite directions includes a housing having an internal chamber and two openings communicating with the chamber. A filter is in the chamber and is adapted to filter particulate matter from liquids. A dual-element valve allows liquid flowing through the chamber from one of the openings toward the other to pass through the filter in one direction of flow, but not the other.

    摘要翻译： 用于在相反方向上转移液体的枢轴装置包括具有内部腔室和与腔室连通的两个开口的壳体。 过滤器位于室内，适用于从液体中过滤颗粒物质。 双元件阀允许液体从一个开口朝向另一个开口流过腔室，以在一个流动方向上流过过滤器，但不是流过另一个。