LOCKING ASSEMBLY FOR SECURING A ROD MEMBER IN A RECEIVER PART FOR USE IN SPINAL OR TRAUMA SURGERY, BONE ANCHORING DEVICE WITH SUCH A LOCKING ASSEMBLY AND TOOL THEREFOR
A locking assembly (30) for securing a rod (20) in a receiving (5) part of a bone anchoring device (1) for use in spinal or trauma surgery is provided, said locking assembly including: a first locking element (31) having a first end and a second end and a longitudinal axis of rotation and a substantially cylindrical outer surface provided with an external thread (35), a coaxial bore (36) passing entirely through said first locking element and an internal thread provided at said bore, a second locking element (32) having a longitudinal axis of rotation and a substantially cylindrical outer surface with an external thread cooperating with the internal thread of said first locking element, characterized in that said first locking element (31) has a recess (37) extending from the first end in the direction of the second end, said recess defining a circumferentially closed wall portion, wherein the interior of the wall portion has a longitudinally extending structure (38) for engagement with a tool. Furthermore, a tool (50) is provided which has sections (54,56) which can be independently engaged with the first and second locking element, respectively..(Fig. 8)本案提供一種鎖定總成(30),可將桿(20)保固於脊椎或外傷手術用的骨骼固定裝置之容納件內。該鎖定總成包含:第一鎖定元件(31),包含第一端和第二端,縱向轉動軸線,具有陽螺紋(35)之實質上圓筒形外表面,完全通過該第一鎖定元件之共軸腔孔(36),以及該腔孔所設陰螺紋;第二鎖定元件(32),包含縱向轉動軸線,具有陽螺紋與該第一鎖定元件陰螺紋嚙合之實質上圓筒形外表面;其特徵為該第一鎖定元件(31)具有凹部(37),從第一端朝第二端的方向延伸,該凹部界定沿周封閉之壁部,其中壁部內面有縱向延伸結構(38),可與工具結合。再者,設有工具(50),其段節(54,56)分別單獨與第一和第二鎖定元件結合。31...第一鎖定元件32...第二鎖定元件37...第一鎖定元件凹部38...第一鎖定元件凹溝44...第二鎖定元件凹溝51...管52...棒53...管末段54...管末段凸部56...棒末段
