PROBLEM TO BE SOLVED: To provide a structure for further improving various characteristics required for a stent.SOLUTION: A stent comprises: multiple annular bodies that have a wavy-line-shaped pattern, respectively, and are arranged side by side in an axial direction and multiple coil-shaped elements 15 that are arranged between the adjacent annular bodies and extend windingly around an axis line. All top parts on a side where the wavy-line-shaped patterns of adjacent annular bodies face each other are connected to one another by the coil-shaped elements 15. The top parts of the wavy-line-shaped patterns of the annular bodies respectively have a bump-like part 19 that includes: an extension section 19a which extends in the axial direction and is wider than the respective coil-shaped elements 15 and an approximately-semicircular section 19b which is formed at a tip thereof. The respective coil-shaped elements 15 are connected to the bump-like part 19. The extension section 19a of the bump-like part 19 partially has a slit 21 that is formed in a manner extending in the axial direction from each inner peripheral edge of the top parts of the wavy-line-shaped patterns of the annular bodies.COPYRIGHT: (C)2015,JPO&INPIT【課題】ステントに要求される様々な特性をより向上させるための構造を提供すること。【解決手段】ステントは、波線状パターンを有し且つ軸線方向に並んで配置される複数の環状体と、隣り合う環状体の間に配置され軸線周りに螺旋状に延びる複数のコイル状要素15とを備え、隣り合う環状体の波線状パターンの対向する側の頂部の全てが相互にコイル状要素15によって接続されている。環状体の波線状パターンの各頂部に、軸線方向に延び且つコイル状要素15の幅よりも大きい幅を有する延長部分19aとその先端に形成された略半円形部分19bとを含む瘤状部19が形成されており、コイル状要素15が瘤状部19に接続されている。瘤状部19の延長部分19aの一部に、環状体の波線状パターンの頂部の内側周縁部から軸線方向に延びるスリット21が形成されている。【選択図】図3
