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    • 7. 发明申请
    • Variable Extension Combined Spinal/Epidural Needle Set and Method For Its Use
    • 可变延伸组合脊柱/硬膜外针组及其使用方法
    • US20080183151A1
    • 2008-07-31
    • US11945467
    • 2007-11-27
    • Ronald W. MarshSean P. Daw
    • Ronald W. MarshSean P. Daw
    • A61M31/00A61M5/178A61M1/00
    • A61B17/3401A61B2017/00469A61B2017/347A61M2025/0007
    • An epidural needle has an elongate tube and a hub with a proximal end, a distal end, an open passageway having an inside diameter, and a cavity disposed between the proximal end and distal end. The hub is attached to the elongate tube so that a hollow bore of the elongate tube is in fluid communication and substantial axial alignment with the open passageway. A resilient member defining an opening therethrough is disposed in the cavity and is axially aligned and in fluid communication with the open passageway. The hub has a clamp with a releasable latch disposed about the resilient member. The clamp is selectively movable between an open position wherein the inner diameter of the resilient member is substantially unaffected and a clamp/latch position wherein the clamp causes a strain to the resilient member and thereby reduces the inner diameter of the opening through the resilient member.
    • 硬膜外针具有细长管和具有近端,远端,具有内径的开放通道和设置在近端和远端之间的空腔的毂。 轮毂连接到细长管,使得细长管的中空孔与开放通道流体连通并且与轴向对齐。 限定穿过其中的开口的弹性构件设置在空腔中并且轴向对齐并与开放通道流体连通。 轮毂具有夹具,其具有围绕弹性构件设置的可释放闩锁。 夹具可选择性地在弹性构件的内径基本上不受影响的打开位置和夹具/夹紧位置之间移动,其中夹具引起弹性构件的应变,从而通过弹性构件减小开口的内径。