Protective cap for an osteosynthesis pin and assembly including this cap as well as an instrument for fixing it on the pin

An assembly, including a protective cap, for fixing the protective cap to an osteosynthesis pin (2), said assembly comprising:

• a fixing screw (12);
• a housing (9) for receiving one end of the pin in a longitudinal direction, and which has a tapped hole (11) which opens out transversely in said housing, and which receives said fixing screw (12), said fixing screw having on one end thereof a head for (12a) matching a cylindrical surface of the pin, and on an opposite end thereof an integral terminal part (4);
• a transversely extending instrument handle (7) integral with said terminal part (4), said fixing screw allowing the pin and the cap to be solidly attached together;
• wherein said screw (12) has, at its junction with said terminal part, a brittle zone (13) allowing said screw (12) and said terminal part (4) to rupture at the brittle zone at the end of screwing and allowing said screw to be locked in the transverse hole (11).