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    • 2. 发明授权
    • Surgical access apparatus with centering mechanism
    • 具有定心机构的手术进入装置
    • US08409146B2
    • 2013-04-02
    • US12843495
    • 2010-07-26
    • Jared A. JudsonOivind BrockmeierKenneth A. Focht
    • Jared A. JudsonOivind BrockmeierKenneth A. Focht
    • A61M5/178
    • A61B17/3462A61B2017/3464
    • A surgical access apparatus includes a housing member and a portal member extending from the housing member and defining a longitudinal axis. The housing member and the portal member define a longitudinal passage therethrough dimensioned to permit passage of an elongated object. A centering mechanism is mounted relative to the housing member. The centering mechanism includes an annular element mounted for rotational movement within the housing member and about the longitudinal axis and first and second arm elements mounted to the annular element and extending radially inwardly relative to the longitudinal axis. The first and second arm elements are each positioned to intersect the longitudinal passage and are adapted to pivot relative to the housing member. The first and second arm elements are operatively connected whereby pivotal movement of the first arm element upon engagement with the elongated object causes the annular element to rotate in response thereto and effect corresponding pivotal movement of the second arm element.
    • 手术进入装置包括壳体构件和从壳体构件延伸并限定纵向轴线的入口构件。 壳体构件和入口构件限定一个纵向通道,该纵向通道的尺寸被设计成允许细长物体的通过。 定心机构相对于壳体构件安装。 定心机构包括环形元件,其被安装用于在壳体构件内并围绕纵向轴线旋转运动,第一和第二臂元件安装到环形元件并相对于纵向轴线径向向内延伸。 第一和第二臂元件各自定位成与纵向通道相交并且适于相对于壳体构件枢转。 第一和第二臂元件可操作地连接,由此第一臂元件在与细长物体接合时的枢转运动导致环形元件响应于此旋转,并且影响第二臂元件的相应的枢转运动。