Hole widener in bone substance for implant has screw in guide sleeve, two bulges for attaching tools and pressure piece

摘要

The externally threaded guide-sleeve (1) is screwed into the bone substance. The rear end of the sleeve has a bulge for attaching an auxiliary tool. A displacement screw (3) is guided by means of a thread in the guide sleeve. The front end of the sleeve has a rounded pressure piece (5) intended for displacing the bone substance. At the rear end is a further bulge for placing another auxiliary tool. The two tools are discs (9,10) with knurled edges