PROBLEM TO BE SOLVED: To provide a spacer for insertion between two vertebrae, which can be adjusted in length, can be filled in situ not only with bone cement but also with bone grafts, and is improved in handling.SOLUTION: A spacer for insertion between two vertebrae includes a first member 2 having a hollow interior and a tubular wall, and a second member 3 having a hollow interior and a tubular wall. The second member is slidable within the first member in an axial direction for adjusting an overall length. At least the first or second member includes first ring projections 17, 24 at a free end thereof, at least a second ring projection 21 is provided inside the first ring projection in order to be fixed to a vertebral body, and at least the second ring projection 21 is formed by a third tubular member 22 fixed and connected to the periphery of the second tubular member 3 and/or is formed by a fourth tubular member 27 attached inside the first tubular member 2.COPYRIGHT: (C)2013,JPO&INPIT【課題】長さを調節でき、本来の場所で骨セメントだけでなく骨移植片でも満たされることができ、取扱いが改良された、2つの椎骨間に挿入するためのスペーサを提供する【解決手段】中空の内部および管状の壁を有する第1の部材2と、中空の内部および管状の壁を有する第2の部材3とを備え、第2の部材は全長を調節するために軸方向に第1の部材内で摺動可能であり、少なくとも第1または第2の部材は、その自由端に第1のリング突起17,24を備え、椎体に固定するために第1のリング突起内に少なくとも第2のリング突起21を備え、少なくとも第2のリング突起21は、第2の管状部材3の周囲に固定して接続される第3の管状部材22によって形成され、および/または、第1の管状部材2内に取付けられる第4の管状部材27によって形成されている。【選択図】図1
