Patent ID: 8979866
Filing Date: 2015-03-17
Classification: A61B

Abstract:
1. A surgical tool comprising: a body including a distal working portion and a proximal operating portion pivotally coupled to the working portion; the working portion including a pair of elongated working members each having a distal end configured for engaging a fixation element securable to a bone segment, the working members movably coupled together and configured for motion in an opening distraction direction and a closing compression direction with respect to each other; the operating portion including a pair of elongated handles pivotally coupled together and configured for opening and closing movement with respect to each other, the operating portion being configured so that moving the handles apart in an opening direction moves the working members together in the closing compression direction, and moving the handles together in a closing direction handles moves the working members apart in the opening distraction direction; an elongated toothed ratchet member arranged across the handles and pivotally coupled to one of the handles, the ratchet member comprises an outer ratchet bar and an inner control rod disposed inside an axially elongated cavity formed in the ratchet bar, the ratchet bar being slidable between unlocked and locked positions with respect to the control rod, the ratchet member being engageable with a pawl disposed on the other handle, the ratchet member being rotatable between two different operating positions; wherein when the ratchet member is in a first operating position engaged with the pawl, the handles are movable in the closing direction and prevented from movement in the opening direction by the ratchet bar, and wherein when the ratchet member is in a second operating position engaged with the pawl, the handles are movable in the opening direction and prevented from movement in the closing direction by the ratchet bar.