PROBLEM TO BE SOLVED: To provide a medical-use multilayer structure that can satisfactorily regenerate an inner membrane, an intermediate membrane and an outer membrane of a vascular wall when applied to an artificial blood vessel.SOLUTION: An artificial blood vessel 100 that is an example of medical-use multilayer structures is a cylindrical body consisting of two nonwoven fabric layers and used for regenerative medicine, in which the blood vessel includes: a hollow cylindrical inner layer 110 which is manufactured by using bioabsorbable polymer, and constituted of a nonwoven fabric layer made of fiber having a fiber diameter at 20 μm or less and a hollow cylindrical outer layer 120 which is provided outside the inner layer 110, manufactured by using bioabsorbable polymer having a composition with difference from the bioabsorbable polymer of the inner layer 110, and constituted of a nonwoven fabric layer made of fiber thicker than the fiber diameter of the fiber of the inner layer 110.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】人工血管に適用されると血管壁の内膜と中膜と外膜とを良好に再生することができる医療用多層構造体を提供する。【解決手段】医療用多層構造体の一例である人工血管100は、2層の不織布層からなり再生医療に用いられる筒状体であって、生体吸収性ポリマーを用いて製造され繊維径が20μm以下の繊維からなる不織布層から構成された中空円筒状の内層110と、内層110の外側に設けられ、内層110の生体吸収性ポリマーとは差異がある組成の生体吸収性ポリマーを用いて製造され内層110の繊維の繊維径よりも太い繊維からなる不織布層から構成された中空円筒状の外層120とを含む。【選択図】図1
