Patent attributes
A torque-controlled screwdriver for medical use includes a hollow maneuvering body, coaxially housed within which are a first bushing and a second bushing provided with respective front toothings for mutual torsional coupling. The first bushing is permanently connected in rotation to the maneuvering body, and the second bushing drives a tool in rotation. The front toothings are configured for disengaging from one another when the screwing torque applied by the maneuvering body to the tool exceeds a predetermined threshold value. A system for enabling a free rotation of a pre-set angular amplitude of the maneuvering body with respect to the tool in the opposite direction to that of screwing is located between the second bushing and the tool.
