In plant device between the , top and, includes with lower part and the core component. Top, the vertebra and it includes with the surface which engages and the underside which includes the convex section. Lower part the vertebra and includes with the underside where it engages and the surface which possesses the convex section. The core component, the convex section top and in addition to engaging operation, has with the concave section and the convex section of lower part and below engaging operation, the concave section. Top and lower part, unrestricted moves in the range which is restricted, it can move parallel.椎間インプラント装置は、上部と、下部と、コア部材とを含む。上部は、椎骨と係合する上面と、凸面部を含む下面とを含む。下部は、椎骨と係合する下面と、凸面部を有する上面とを含む。コア部材は、上部の凸面部と作動的に係合する上凹面部と、下部の凸面部と作動的に係合する下凹面部とを有する。上部と下部とが、制限された範囲で自在動し、平行移動し得る。
