| 摘要 |
PURPOSE: A stent to be inserted into a blood vessel of the human body is provided to achieve a thin-walled, multi-cellular tubular stent having optimal strength and radiopacity characteristics. CONSTITUTION: The stent(20) has a form of a thin-walled, multi-cellular tubular structure. The tubular structure has a longitudinal axis and the stent includes a plurality of circumferential sets of strut members(25). Each set of the strut members is longitudinally displaced from each other and connected to each other by longitudinally extending links. Each set of the strut members forms a closed and cylindrical portion of the stent. Further, each set of the strut members includes a plurality of connected curve sections(23,27) and diagonal sections(28). The sets of the strut members further include end sets(22) of strut members located at each end of the stent and central sets(26) of strut members located between the end sets of the strut members. The diagonal sections of the end sets of the strut members have a center portion and two ends. At least one of the diagonal sections of the end sets of the strut members includes a tapered shape with width of one diagonal section being greater at the center of the diagonal section than the width at either end of the diagonal section. |
