PROBLEM TO BE SOLVED: To provide a membrane-like connective tissue body formation base material that can form a membrane-like connective tissue body that has a desired thickness, both surfaces of desired surface state, and uniform characteristics irrespective of direction such as a vertical or a horizontal direction without making a time necessary for forming a connective tissue body longer.SOLUTION: A tissue formation space 3 is sandwiched by making two surfaces of tissue formation surfaces 2a and 2b face with each other. By forming slits 9a and 9b on the tissue formation surface 2b, the tissue formation space 3 is made to communicate with the outside of the base material. Longitudinal directions of the slits 9a and 9b are set in the directions different from each other. A membrane connective tissue body formation base material 1 is installed in an environment in which a biological tissue material is present. The connective tissue intrudes into the tissue formation space 3 from the slits 9a and 9b. Both surfaces of a cylindrical membrane connective tissue body 4 are formed corresponding to a surface of the base material. Projections formed inside of the slits 9a and 9b are directed toward directions which intersect with each other. Irrespective of directions such as a vertical direction or a horizontal direction, characteristics of the membrane-like connective tissue body become substantially uniform.SELECTED DRAWING: Figure 1【課題】結合組織体の形成に要する時間を長くすることなく、所望の厚さ、かつ両面が所望の表面状態で、縦横などの方向に関わらず均一な特性の膜状結合組織体を形成することのできる膜状結合組織体形成用基材の提供。 【解決手段】二面の組織形成面２ａ、２ｂを対向させて組織形成空間３を挟む。組織形成面２ｂにスリット９ａ、９ｂを形成して、組織形成空間３を基材外部と連通させる。スリット９ａ、９ｂの長手方向を互いに異なる方向に設定する。膜状結合組織体形成用基材１を生体組織材料の存在する環境に設置する。スリット９ａ、９ｂから組織形成空間３に結合組織が侵入する。筒形膜状結合組織体４の両面が基材表面に合わせて形成される。スリット９ａ、９ｂの内部に形成される突状が互いに交差する方向を向く。縦横などの方向に関わらず膜状結合組織体の特性がほぼ均一になる。【選択図】 図１
