PROTECTIVE CAP FOR AN OSTEOSYNTHESIS PIN AND ASSEMBLY INCLUDING THIS CAP AS WELL AS AN INSTRUMENT FOR FIXING IT ON THE PIN

摘要

This cap has a housing adapted in order to receive one end of the pin and a tapped hole opening out transersely in this housing, adapted in order to receive a fixing screw allowing the pin and the cap to be solidly attached together; the screw is initially made in a single piece with the terminal part of a handle of the fixing instrument, an embrittled zone being made of the transition between the screw and the terminal part. The surgeon first covers the pin with the cap then screws the screw until it locks the pin and the end of screwing causes the embrittled zone to rupture, so that only the screw remains locked in place in the cap fixed to the pin. This cap prevents any migration of the pin and protects the neighbouring tissues.