The present invention relates to a kind of mono- bone screws of handhabungsinstrument (10) (4) (10), wherein handhabungsinstrument and bone screw (4) rigidity and drehfest verbindbar are that the bone screws screw-in (4) in bone can be with one in longitudinal axis (12 tables, the stabteil(14 being arranged on the two sides of one pipe or the well-trained two sides ü lsenf rmig h (14) and an outside) (16) (16), wherein can be intervened in a stabteil werkzeugansetzstelle bone screw (4)； (10)It is to be known as by gekennzei handhabungsinstrument: two sides(14)With(24),One f ü hrungsschlitz this stabteil(16)The geh useteils f ü hrungsschlitzes in field(24)(14)It is to extend quer ffnung in radial direction(22)),With a kopplungselement(18)In this quer ffnung(22)Be arranged in two sides(14),(16)anordenbar,Stabteils is in kopplungselement(18)In geh useteils f ü hrungsschlitz(24)(14)Or it is protruded outward by f ü hrungsschlitz hineinragt(24)In longitudinal direction(12)In gleitverschieblich,führungsschlitz(24)Therefore the two sides stabteil(16)With(14)In longitudinal direction(12)Movably relative to each other,But kopplungselements drehfest are arranged(18)With(16)It is by stabteil kopplungselements(18)(12)In longitudinal elasticity.
