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    • 3. 发明申请
    • Locking bone plate with bushing anti-rotation feature
    • 锁定骨板与衬套防旋转功能
    • US20080119895A1
    • 2008-05-22
    • US11986147
    • 2007-11-20
    • Thierry Manceau
    • Thierry Manceau
    • A61B17/58A61B17/56
    • A61B17/8042A61B17/8047A61B17/8061
    • A locking plate intended to be implanted at a bone site and a method for producing and implanting this device. At least one expandable bushing is engaged with a through-hole in the plate. The bushing includes an exterior surface with at least one recess and a passageway including a threaded interior surface. The expandable bushing is initially in a first configuration that permits poly-axial rotation of the bushing within the through-hole. An elongated anchoring member is provided with a distal portion and a proximal portion including a head portion with threads complementary to the threads on the interior surface of the expandable bushing. The proximal portion expands the bushing to form a friction lock between the bushing and the plate in a selected polyaxial position in a second configuration. At least one discrete blocking member is fixedly engaged with the body portion of the plate and extends into the through-hole to engage with the recess on the expandable bushing. The blocking member inhibiting rotation of the expandable bushing relative to the through-hole.
    • 旨在植入骨骼部位的锁定板以及用于生产和植入该装置的方法。 至少一个可膨胀衬套与板中的通孔接合。 衬套包括具有至少一个凹部的外表面和包括螺纹内表面的通道。 可扩张衬套最初处于允许衬套在通孔内多轴旋转的第一构型。 细长的锚固构件设置有远侧部分和近端部分,该近端部分包括具有与可膨胀衬套的内表面上的螺纹互补的螺纹的头部部分。 近端部分在第二构型中使衬套膨胀以在所选择的多轴位置中在衬套和板之间形成摩擦锁。 至少一个分立的阻挡构件与板的本体部分固定地接合并延伸到通孔中以与可扩展衬套上的凹部接合。 阻挡构件阻止可膨胀衬套相对于通孔的旋转。