US Patent 9877763 Surgical, torque-transferring instrument including an associated tool

A chip-removing tool of a surgical torque-transferring instrument includes a distal engagement segment which is adjoined by a tool shaft whose proximal end portion is prepared for a torque-transferring insertion into a tool mounting of the instrument. The proximal end portion is subdivided at least in a functional section “torque transmission” and a functional section “axial locking” which is axially spaced therefrom. The functional section “axial locking” is arranged with respect to the engagement segment so as to be proximal relative to the functional section “torque transmission”.