The rachis rod to 2nd enlarged section includes the expansion possible long tubular component from 1st insertion section. The expansion possible tubular reinforcement sleeve, adjoining to the balloon, is arranged in concentric condition. It is possible to connect the balloon, to the sleeve. In addition as for the rachis rod, the longitudinal direction reinforcement component (32) it is possible to possess. The connected component (34), it is possible to connect two or more inside longitudinal direction stiffener 1 at the point which is separated according to each. The rachis rod, on both sides of the expansion possible part, furthermore may include the end.< Selective figure >Figure 1脊柱ロッドは、第1挿入断面から第2拡大断面まで膨張可能な細長い管状の部材を含む。膨張可能な管状の補強スリーブは、バルーンに隣接して同心状に配置される。バルーンは、スリーブに接合してもよい。脊柱ロッドはまた、長手方向補強部材(32)を有してもよい。接続部材(34)は、各々に沿って分離した点において、長手方向補強材1のうちの2つ以上を接続してもよい。脊柱ロッドは、膨張可能な部分の両側に、端部を更に含んでもよい。【選択図】図1
