| 摘要 |
A bone screw, known per se, with a thread section (2) and a receiving part (5) for receiving a rod (29) to be connected to the bone screw is created. The connection and locking of the connection between bone screw and rod takes place via an outer nut (13). So that the connection has the necessary strength and durability, the outer nut (13) has on the inside a sleeve- shaped element (17), having a predetermined inner measurement, the outer diameter of which is almost identical to or slightly smaller than the diameter of the bore (8), and a pressure element (23) arranged therein. The pressure element (22)(sic) has at its end facing the floor of the bore (8) a first section (26), the outer measurement of which is larger than the predetermined inner measurement and which effects a widening of the element (17) when pressure is exerted on the rod (29) to be received.
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