A bone anchoring device is provided comprising a bone anchoring section (6, 21) for anchoring in a bone or a vertebrae, a receiving part (7, 24) for receiving a connection element (3), a connection element (3) which is at least partly made of a flexible material, a fixation element (5) for fixing the connection element (3) in the receiving part (7, 24), and wherein a sleeve (4) is provided around the connection element (3) in the receiving part.本案提供一種骨骼固定裝置,包括骨骼固定段(6,21),以固定於骨骼或椎骨;容納件(7,24),以容納連接元件(3);連接元件(3),至少部份由撓性材料製成;固設元件(5),把連接元件(3)固設於容納件(7,24)內,其中設有套筒(4),包圍容納件內之連接元件(3)。1...骨骼固定裝置2...骨骼固定元件3...撓性桿4...套筒5...固設元件6...螺紋軸7...容納件8...U形凹部9,10...自由股部11...共軸腔孔12...陰螺紋15...細縫DR...桿直徑