A bone anchoring device comprises a receiving part (1) for receiving a rod, the receiving part (1) having a first bore (5) coaxial with a longitudinal axis (4) and a second bore (6), an anchoring element (13) having a first end (14) for insertion into the bone and a second end (15) positionable within a second bore (6), the second end (15) having a spherically shaped surface portion (36). The bone anchoring device further has a locking device (33) provided to the second bore (6) of the receiving part (1), the locking device (33) protruding from an inner wall (7) of the second bore (6) and engaging with a recessed surface portion (35) of the second end (15) of the anchoring element (13), such that the anchoring element (13) is pivotable relative to the receiving part (1) around a single axis (46) of rotation. The locking device (33) may comprise pins inserted into through holes (34) formed in the receiving part, which engage with the recessed surface portion (35a-d) of the second end (15).(Fig. For publication: Fig. 1)一種骨骼固定裝置,包括容納桿用之容納件(1),容納件(1)具有與縱軸線(4)共軸之第一腔孔(5)和第二腔孔(6);固定元件(13),具有插入骨骼用之第一端(14);和可定位於第二腔孔(6)內之第二端(15),第二端(15)具有球形表面部(36)。骨骼固定裝置又有鎖定裝置(33),設於容納件(1)之第二腔孔(6),鎖定裝置(33)從第二腔孔(6)突出,並與固定元件(13)第二端(15)的凹面部(35)結合,使固定元件(13)可相對於容納件(1)繞單一轉動軸線(46)樞動。鎖定裝置(33)可包括銷,插入容納件形成之貫穿孔(34),與第二端(15)的凹面部(35a-35d)結合。1...容納件2...容納件第一端3...容納件第二端4...縱軸線5...第一腔孔8...U形凹部9,10...股部11...陰螺紋13...骨骼固定元件14...幹部15...頭部20...加壓元件21...加壓元件第一端22...加壓元件第二端23...圓筒形截面凹部26...加壓元件之縮孔27...縮孔33...銷34...貫穿孔35...平面部46...轉動軸線
