Schutzkappe für Knochennagel mit Werkzeug zu deren Befestigung

摘要

This cap (1) has a housing (9) adapted to receive one end of the pin (2), and a tapped hole (11) emerging transversely in this housing, adapted to receive a fastening screw (12) allowing the pin (2) and cap (1) to be joined firmly together; the screw (12) is initially made in a single piece with the end part (4) of a shaft (7) of the fastening member (3), a weakened zone (13) being made at the transition between the screw and the end part (4). The surgeon first covers the pin (2) with the cap (1), then screws the screw (12) until the latter locks the pin (2), and the end of the screwing causes breakage of the weakened zone (13), so that only the screw (12) remains locked in place in the cap (3) fixed to the pin (2). This cap prevents any migration of the pin and protects the neighbouring tissues.