Screwdriver for bone-screws, has bar that is pre-stressed in direction to free end of shaft by using elastic coil spring, retractable against force of spring in shaft, and laterally projecting up to contour of shaft

摘要

The screwdriver has a handle part (2), and a shaft (3) that is held at the handle part in a torque-proof manner. A bar (11) is movably supported at the shaft in a longitudinal direction. The bar is pre-stressed in a direction to a free end (4) of the shaft by using an elastic coil spring (16) and is retractable against the force of the spring in the shaft. The bar is laterally projecting up to the contour of the shaft and not any longer than the contour of the shaft.