To support separate and pre-deployment configuration for insertion between the tissue layers, the layers of the spinal column tissue, including an elongate member and a deployed configuration to form a support structure by a change in structure the elongate member, the spine is a tissue distraction device. The distraction device, by guiding and limiting the movement of the material having fluidity, and may substantially reduce extravasation. In the deployed configuration, the change of configuration, the elongated member forms a support structure including a resident volume between the tissue layers. Preferably, the elongate member is made of a shape memory material having a natural tendency to form the shape of the support structure. In addition, the direction between the tissue and the support structure has a range that increases as the elongated member is inserted between the tissue layers.組織層の間への挿入のための展開前構成と、脊柱組織の層を分離し支持するために、細長い部材が構成の変化により支持構造を形成する展開構成とを有する細長い部材を含む、脊柱組織伸延装置である。伸延装置はまた、流動性を有する材料の動きを制限し導いて、管外遊出を実質的に減少させ得る。展開構成において、細長い部材は、構成の変化により、組織層の間に内在容積を含む支持構造を形成する。好ましくは、細長い部材は、支持構造の形状を形成する本来の傾向を有する形状記憶材料から構成される。さらに、支持構造は、組織の間の方向に、細長い部材が組織層の間に挿入されるにつれて増大する範囲を有する。
