Disclosed is a spine rectification apparatus including a piping body having at least a shrinking formed in the interior thereof and a rod member penetrating the piping body, wherein the surface of the rod member has a plurality of protruding portions for embedding into the shrinking portion and each of the protruding portions is shrinking in size towards one end so that the rod member can move with respect to the piping body in a single direction.一種脊椎矯正裝置,係包括:內部具有至少一漸縮部之一管體以及穿過該管體之一桿件,該桿件的表面上具有嵌卡該漸縮部之複數突起部,又各該突起部係朝一端漸縮,使該桿件相對該管體僅朝單一方向進行位移。20‧‧‧管體20a‧‧‧第一開口20b‧‧‧第二開口200‧‧‧通道200a‧‧‧齒部201‧‧‧漸縮部21‧‧‧桿件210‧‧‧突起部201a,210a‧‧‧斜面201b,210b‧‧‧平面X‧‧‧箭頭方向
