| 摘要 |
A self-expanding stent comprising a series of zig-zag stenting rings (A, B, C, D, E, F, D1, D2) spaced along the axis and with adjacent said rings connected by connecting links (12, 14) spaced around the circumference of the rings, the links (12) between any two axially adjacent rings A, B being circumferentially staggered relative to the links (14) between the rings B and C, each ring being constituted by a succession of alternating struts (18) with points of inflection (16, 16′, 16″) therebetween. The points of inflection at one end of at least one of the rings are staggered in their location along the longitudinal axis whereby, with axial withdrawal of a surrounding sheath at a stenting site, to deploy the self-expanding stent, the individual points of inflection at said one ring end escape from the sheath sequentially, with continued withdrawal of the sheath, rather than simultaneously.
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