< Topic >Offering the elastic rod for new vertebral fixing which in restitutive force and durability is superior, it designates that you improve the problematical point of the former elastic rod as the purpose.SolutionsThe plural support sticks which have the insertion concave section where the screw thread was formed to the inside surface It was provided between the aforementioned plural support sticks, on the inside surface the plural cutoff rings where the screw thread was formed Being connected to the screw thread of the aforementioned insertion concave section of the aforementioned both support stick, the spring which possesses the helical structure which is inserted in the aforementioned insertion concave section of both support stick and concludes both support stick Penetrating the center of the aforementioned spring, the resilient pin which into the bottom hole of the insertion concave section of both support stick it is fitted is inserted and offering the flexible rod for vertebral fixing which consists of, it solves the above-mentioned topic.< Selective figure > Figure 1【課題】復元力と耐久性とに優れた新規な脊椎固定用弾性ロッドを提供して、従来の弾性ロッドの問題点を改善することをその目的としている。【解決手段】内側面にねじ山が形成された挿入凹部を具える複数の支持棒;前記複数の支持棒の間に設けられ、その内側面にはねじ山が形成された複数の遮断リング;前記両支持棒の前記挿入凹部のねじ山にかみ合って両支持棒の前記挿入凹部に挿入され両支持棒を締結する螺旋構造を有するスプリング;前記スプリングの中心を貫通して両支持棒の挿入凹部の底部孔に嵌合挿入される弾性ピンとからなる脊椎固定用フレキシブルロッドを提供して、上記課題を解決する。【選択図】 図1
