| 摘要 |
<p>An intravascular stent (208) especially suited for implanting in curved arterial portions (210). The stent (208) retains longitudinal flexibility after expansion. The stent (208) is formed of intertwined meander patterns (301 and 312) forming triangular cells (804). The triangular cells (804) are adapted to provide radial support, and also to provide longitudinal flexibility after expansion. The triangular cells (804) provide increased coverage of a vessel wall. The stent (208) can have different portions adapted to optimize radial support or to optimize longitudinal flexibility. Loops in the stent (208) are disposed and adapted to cooperate so that after expansion of said stent within a curved lumen (210), the stent (208) is curved and cells on the outside of the curve open in length, but narrow in width whereas cells on the inside of the curve shorten in length but thicken in width to maintain a density of stent element area which much more constant than otherwise between the inside and the outside of the curve.</p> |
