| 摘要 |
A stent includes a plurality of first portions arranged in a longitudinal direction, and second portions each disposed between the adjacent first portions. Each of the first portions is expandable and contractible in a radial direction, and each of the second portions allows a whole of the stent to curve in the longitudinal direction. When the first portion is expanded in the radial direction, the longitudinal length of the first portion is decreased, but spacing between the adjacent first portions is increased.
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