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    • 4. 发明授权
    • Interspinous process implant having pin driven engagement arms
    • 棘突间植入植入物具有引脚驱动的接合臂
    • US09474555B2
    • 2016-10-25
    • US14303662
    • 2014-06-13
    • Spinal Simplicity LLC
    • Harold HessTodd MoseleyMelissa FrockAdam Rogers
    • A61B17/70
    • A61B17/7065
    • An interspinous process implant comprising an elongated body defining a longitudinal axis and an interior cavity. The implant includes engagement members movable between a first position stowed within the interior cavity and a second position deployed from the interior cavity. Each engagement member includes a central hub defining a hub axis perpendicular to the longitudinal axis of the body. Each central hub has an inwardly extending crank pin. The crank pins are radially offset from the hub axis and circumferentially spaced apart from one another. The implant also include an elongated drive shaft mounted for axial movement within the interior cavity and includes a distal actuation portion having upper and lower yokes positioned to cooperate with the crank pins. Upon axial movement of the drive shaft the crank pins translate through respective arcuate paths about the hub axis, causing corresponding rotational movement of the engagement members about the hub axis.
    • 椎间植入植入物,其包括限定纵向轴线和内部空腔的细长主体。 所述植入物包括可在位于所述内部空腔内的第一位置与从所述内部空腔展开的第二位置之间移动的接合构件。 每个接合构件包括限定垂直于主体的纵向轴线的轮毂轴线的中心轮毂。 每个中心毂具有向内延伸的曲柄销。 曲柄销径向偏离轮毂轴线并且彼此周向间隔开。 植入物还包括细长的驱动轴,其被安装用于在内腔内轴向运动,并且包括远侧致动部分,其具有定位成与曲柄销配合的上轭和下轭。 在驱动轴的轴向移动时,曲柄销绕着轮毂轴线平移通过相应的弧形路径,导致接合构件围绕轮毂轴线相应的旋转运动。