PROBLEM TO BE SOLVED: To provide a tubular reinforcing body used for a tubular artificial organ having a predetermined strength capable of holding an inner cavity and having bending performance and axial flexibility. SOLUTION: A tubular reinforcement body 1A of the present invention used for forming a connective tissue around the periphery to produce a tubular artificial organ has a predetermined axial compressive strength and a predetermined radial strength and is formed into a tubular shape. A plurality of first structural bodies 10 and a second structural body 20A having an axial compressive strength smaller than the axial compressive strength of the first structural body 10, and the first structural body 10 is provided. Are connected via the second structure 20A. [Selection diagram] Figure 1A【課題】内腔を保持可能な所定の強度を有する共に、屈曲性能や軸方向柔軟性を有する管状人工臓器に用いられる管状補強体を提供すること。【解決手段】周囲に結合組織を形成させて管状人工臓器を作製するために用いられる本発明の管状補強体１Ａは、所定の軸方向圧縮強度及び所定の径方向強度を有し管状に構成される複数の第１の構造体１０と、第１の構造体１０の軸方向圧縮強度よりも小さい軸方向圧縮強度を有する第２の構造体２０Ａと、を備えており、第１の構造体１０は第２の構造体２０Ａを介して繋がっている。【選択図】図１Ａ
