SOFT STENT EXCELLENT IN VASCULAR FOLLOW-UP AND DILATION NATURE

摘要

A soft stent having excellent follow-up nature to lumens (accordingly, allowed to pass the lumens meandering three-dimensionally), substantially preventing shortening from occurring, and enabling a lateral hole to be formed therein. An annular member (1) comprises ten wave-like elements (11) continued in the circumferential direction so as to be expanded in the radial direction. The wave-like element (11) comprises the crest (111) of one wave and the bottom of (112) of the one wave. In the developed state of the wave-like elements, the wave-like elements continuously form a repeated meandering pattern in the vertical direction. The annular members (1) and (1) adjacent to each other are connected to each other on the longitudinal same straightline, and the waves connected to each other through connection elements (2) are formed in the crest (113) thereof and the other is formed in the bottom (114) thereof. The crest (113) and the bottom (114) of the wave are so formed that the amplitudes of the wave are reduced relative to each other only at these portions, which is 2/3 of the amplitudes of the crest (111) and the bottom (112) of the wave not connected to each other through the connection elements (2).