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    • 2. 发明授权
    • Screw with variable diameter cannulation and driver
    • 螺丝带可变直径插管和司机
    • US09078717B2
    • 2015-07-14
    • US12703275
    • 2010-02-10
    • Bryan GriffithsPhilip Watt
    • Bryan GriffithsPhilip Watt
    • A61B17/86A61B17/88
    • A61B17/864A61B17/8615A61B17/8872A61B17/8877A61B17/8888
    • A bone screw driving system includes a screw having a head and a shaft extending from the head. The screw includes a stepped opening extending in the shaft that includes a first portion and a second portion having a greater cross-sectional dimension than the first portion. The bone screw driving system further includes a screw driver having a driver shaft that defines a tip configured to engage the screw head. The driver further includes a pin extending from the tip and sized to fit within the opening. The pin includes an abutment movable to a locked configuration in the second portion of the opening, wherein the abutment defines a cross-sectional dimension greater than that of the first portion of the opening.
    • 骨螺钉驱动系统包括具有头部和从头部延伸的轴的螺钉。 螺杆包括在轴中延伸的阶梯式开口,其包括第一部分和具有比第一部分更大的横截面尺寸的第二部分。 骨螺钉驱动系统还包括具有驱动轴的螺丝刀,该驱动轴限定了构造成接合螺钉头的尖端。 驱动器还包括从尖端延伸并且尺寸适合于开口内的销。 销包括可移动到开口的第二部分中的锁定构造的邻接部,其中邻接件限定大于开口的第一部分的横截面尺寸。