PROBLEM TO BE SOLVED: To provide an artificial blood vessel in which fine irregularities in an inner wall is small, and therefore immune system cells are hard to be absorbed.SOLUTION: An artificial blood vessel 10 includes an artificial blood vessel body 12, and a carbon material membrane 11 for covering an inner wall of an artificial blood vessel body 12. The inner wall covered by the carbon material membrane 11 is configured such that a water vapor adsorption isotherm has desorption hysteresis. Also, the porous artificial blood vessel body is arranged in a chamber capable of adjusting pressure, and a process is included in which a source gas is supplied to generate plasma in the inside of the artificial blood vessel body, and thereby the inner wall is covered by the carbon material membrane. The artificial blood vessel body is arranged in the chamber while being stored in a non-conductive outer cylinder. The outer cylinder is made by that a discharge electrode is arranged in one end and the other end is opened, and an alternate current bias is intermittently applied between the discharge electrode and a counter electrode provided from an outer cylinder separately.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】内壁における微細凹凸が小さく、免疫系細胞が吸着されにくい人工血管を提供する。【解決手段】人工血管１０は、人工血管本体１２と、人工血管本体１２の内壁を被覆する炭素質膜１１とを備えている。炭素質膜１１に被覆された内壁は、水蒸気吸着等温線が脱離ヒステリシスを有する。また、圧力を調整可能なチャンバ内に、多孔性の人工血管本体を配置し、原料ガスを供給し、人工血管本体の内部にプラズマを発生させて、内壁を炭素質膜により被覆する工程を備え、人工血管本体は、非導電性の外筒内に収容された状態でチャンバ内に配置し、外筒は、一方の端部に放電電極が配置され、他方の端部は開放されており、放電電極と、外筒から離間して設けられた対向電極との間に断続的に交流バイアスを印加することにより製造される。【選択図】図１
