Patent ID: 8343158
Filing Date: 2013-01-01
Classification: A61B

Abstract:
1. A tool for forming a cavity within a bone, comprising: a shaft having a distal end; a blade pivotally mounted on the shaft towards the distal end; a rod which is fastened to the blade, and which is slidable within the shaft to change the pivotal position of the blade relative to the shaft; a lever having an opening therein, the lever being connected to the rod, the rod extending through the opening; and an incremental drive configured to cause the rod to translate along the shaft when the shaft and rod are rotated, the incremental drive including a threaded rod having a distal rod end and a proximal rod end, the threaded rod being connected to the lever, and a knob having an internal thread, the internal thread of the knob being threaded with the threaded rod.