Patent ID: 8465528

Claim:
Surgical retaining screw, comprising: a shaft with an external thread, a head part connected to the shaft securely or movably, said head part having an interior space open towards an upper side of the head part located opposite the shaft and two openings arranged on oppositely located sides of the head part, said openings being open towards the upper side and forming a receptacle for a bar-like connecting part, and a clamping screw adapted to be screwed into the interior space from the upper side such that it clamps the connecting part in the receptacle, wherein: the clamping screw is screwed into a monolithic screw sleeve, the screw sleeve abuts, with a conical outer surface tapering towards the upper side of the head part, directly on a complementary conical inner surface of a bearing sleeve surrounding the screw sleeve, the screw sleeve and the bearing sleeve are adapted to cooperate together to absorb forces from the clamping screw acting radially outward in order to prevent a spreading apart of the head part during screwing in of the clamping screw, the bearing sleeve and the clamping screw are not screwed together, and the bearing sleeve is held on the head part so as to be secured against any displacement in a direction towards the upper side.