A kind of implantation material for stablizing backbone with what comprising pedicle screw, slender member and the retainer with what stabiliser bar. The slender member can multiaxis be removably connected to the pedicle screw, and there is external screw thread above its longitudinal circumference. The retainer can be single-piece or may include upper retainer part and lower retainer part. The retainer or the upper retainer part and the lower retainer part, which each have, may pass through opening therein to accommodate stabiliser bar so that an implantation material to be fixed on another. On the one hand, the upper retainer partial interior is carved with screw thread to engage the external screw thread of the slender member, and rotation of the upper retainer part by the slender member around its longitudinal axis is translated along the slender member longitudinal spiral. The upper retainer is partially toward the lower retainer part translation to brace and be kept in-between by the bar.一種用於穩定脊柱的植入物,其包括椎弓根螺釘、細長構件和用於穩定杆的保持器。所述細長構件可多軸移動地連接到所述椎弓根螺釘,並且在其縱向圓周上方具有外螺紋。所述保持器可以是單件或者可包括上保持器部分和下保持器部分。所述保持器或所述上保持器部分和所述下保持器部分各自都具有可穿過其中的開口以容納穩定杆以將一個植入物固定到另一個上。一方面,所述上保持器部分內部刻有螺紋以嚙合所述細長構件的外螺紋,所述上保持器部分通過所述細長構件繞其縱向軸的轉動而沿所述細長構件縱向螺旋平移。所述上保持器部分朝向所述下保持器部分平移以將所述杆緊縛並保持在其之間。
