PROBLEM TO BE SOLVED: To achieve an instrument for spine surgery capable of effectively preventing the leakage of a bone filler to the outside of a centrum and capable of being utilized even in the treatment of fracture of a bone such that the centra are separated before and behind.SOLUTION: The instrument 7 for spine surgery includes a tube part 8 and a balloon part 9. The tube part 8 is formed into a flexible hollow tubular shape and has opening parts at both end parts in the length direction thereof while the balloon part 9 is formed into a bag-like shape to be integrally provided with the tube part 8 to the intermediate part of the tube part 8 in the length direction thereof and constituted so as to be outwardly expanded in its diametric direction from the outer peripheral surface of the tube part 8 when the bone filler is supplied to the internal space of the balloon part through the tube part 8.COPYRIGHT: (C)2012,JPO&INPIT【課題】骨充填材が椎体の外部に漏出することを有効に防止できるとともに、椎体を前後に分離するような骨折の治療にも利用できる脊椎用手術器具を実現する。【解決手段】本例の脊椎用手術器具7は、チューブ部8とバルーン部9とを備え、このうちのチューブ部8は、中空管状で可撓性を有し、長さ方向両端部に開口部を有するものであり、前記バルーン部9は、袋状で、前記チューブ部8の長さ方向中間部にこのチューブ部8と一体に設けられており、このチューブ部8を通じてその内部空間に骨充填材が供給された際に、このチューブ部8の外周面よりも径方向外側に膨出する様に構成される。【選択図】図1
