作者: Sharifi-Mehr Amir Ali , Krause Steven F
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摘要: A screwdriver for driving a screw in bone includes first body configured to engage tulip of the screw, central bore extending through body, second having and an external surface spline member positioned at least partially within cavity, inner shaft drive into being rotatably coupled with spring-biased pawl engageable collar rotatable relative cammed surface, when is rotated direction about pushes engagement couple body.