A screw insertion/extraction device is disclosed that is useful as a tool forscrew insertion and extraction procedures. The device includes a shaft sleevethat is formed to define a passage for accommodating the shaft of a wrench. In anexemplary embodiment, the shaft sleeve has a proximal portion and a distal portioninterposed by an intermediate portion, where the proximal and distal portionsextend along opposite sides of a central axis of the wrench shaft passage and theintermediate portion extends both along and about the central axis to connectthe proximal and distal portions. A shoulder portion extends inwardly from thedistal end of the shaft sleeve for engaging the base of a screw head such that thescrew head can be captured between the distal end of a wrench and the shoulder portionof the shaft sleeve.
