An intervertebral implant is provided having a top surface (2) configured to engage a first vertebral body, a bottom surface (3) configured to engage a second vertebral body and a side wall (4) connecting the top surface (2) and the bottom surface (3), a hollow space (5) defined by the side wall and an elongate opening (8) extending through the side wall (4) into the space, the elongate opening (8) having a length in a circumferential direction； the implant further comprising a rotatable insert (10, 10’, 100) provided within the space wherein the insert comprises a spring portion (10a, 10b, 110a, 110b) that holds the insert within the space by frictional engagement with the side wall and wherein the insert comprises an engagement portion (13, 113) that is configured to engage with a tool (50) extending through the opening (8).本案提供一種椎間植入物，具有頂面(2)，構成結合第一椎體；底面(3)，構成結合第二椎體；和側壁(4)，連接頂面(2)和底面(3)，由側壁界定空心空間(5)，長形開口(8)延伸穿過側壁(4)進入空間內，長形開口(8)的長度在沿周方向；植入物又包括轉動式插件(10,10',100)，設在空間內，其中插件包括彈簧部(10a,10b,110a,110b)，利用與側壁的摩擦結合，把插件保持在空間內，又其中插件包括結合部(13,113)，構成與延伸穿過開口(8)的工具(50)結合。
