Stent geometry for improved flexibility

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01)

Patent

CA 2466817

A stent comprises one or more circumferential serpentine bands and having alternating peak portions and trough portions. The peak portions include shorter peak portions and longer peak portions. The longer peak portions are of a longitudinal extent greater than the shorter peak portions. The longer peak portions include first bent peak portions which extend in a first direction non-parallel to the longitudinal axis of the stent and second bent peak portions which extend in a second direction non-parallel to the longitudinal axis of the stent. Each first bent peak portion is circumferentially adjacent to one second bent peak portion which points toward the first bent peak portion and to one second bent peak portion which points away from the first bent peak portion. Adjacent first and second bent peak portions which point toward one another are separated one from the other by at least one shorter peak portion.

L'invention concerne une endoprothèse à un ou plusieurs serpentins enroulés sur la circonférence, et à alternance de crêtes et de creux. Les crêtes sont de deux sortes: courtes et longues. Les crêtes plus longues ont une extension longitudinale supérieure à celle des crêtes plus courtes. Elles comprennent des premières parties de crêtes courbes qui s'étendent dans une première direction non parallèle à l'axe longitudinal de l'endoprothèse, et des secondes parties de crêtes courbes qui s'étendent dans une seconde direction non parallèle à l'axe longitudinal de l'endoprothèse. Chaque première partie de crête courbe est adjacente sur la circonférence à une seconde partie de crête courbe qui pointe vers la première partie de crête courbe, et à une seconde partie de crête courbe qui s'éloigne de la première partie de crête courbe. Lesdites parties adjacentes qui pointent l'une vers l'autre sont séparées par au moins une partie de crête plus courte.

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