The invention relates to a pedicle screw for implants for correcting and stabilizing the spinal cord, having a screw head (2) located at one axial end of a screw shaft (1) and a tulip head (3) having a screw-head seat (4) open downward for the screw head (2), and a rod seat (6) between flanks (5) of the tulip head (3) for the fixation of a rod. A head retainer (7) in the screw-head seat (4) underneath the screw head (2) is radial to the longitudinal head axis (8) on at least one radial pivot pin (9).(Fig. 5b)本發明係關於一種用於矯正及穩定脊椎之植入物之椎弓根螺釘,具有一設於一螺紋軸桿(1)之一軸向端部之頭部(2),及一鬱金香形頭(3),其具有向下打開用以容納頭部(2)之容納器(4),以及一形成於鬱金香形頭(3)支臂(5)之間用以固定一桿之桿容納器(6)。一設於頭部(2)下方容納器(4)中之頭部保持器(7),其係透過至少一插銷(9)以可樞轉之方式安裝於鬱金香形頭縱軸(8)。(圖5b)1...螺紋軸桿2...頭部5...支臂7...頭部保持器13...空隙16...孔17...夾緊部18...工具導引19...導引槽20...主軸螺紋
