Expandable stent with sliding and locking radial elements

Details Expandable stent with sliding and locking radial elements Expandable stent with sliding and locking radial elements

A - Human Necessities

61

F

A61F 2/06 (2006.01) A61L 31/16 (2006.01)

Patent

CA 2427270

The present invention provides a lumen support stent with a clear through- lumen for use in a body lumen. The stent is formed from at least one series of sliding and locking radial elements and at least one ratcheting mechanism comprising an articulating element and a plurality of stops. The ratcheting mechanism permits one-way sliding of the radial elements from a collapsed diameter to an expanded diameter, but inhibits radial recoil from the expanded diameter.

L'invention concerne un extenseur de support conçu pour être mis en application dans une lumière anatomique et comportant un passage dépourvu d'obstacle. Cet extenseur est constitué par au moins une série d'éléments de coulissement et de verrouillage radial et par au moins un mécanisme d'encliquetage comprenant un élément d'articulation et une pluralité de butées. Ce mécanisme d'encliquetage permet à ces éléments de coulisser dans un sens radial unique depuis un diamètre d'affaissement à un diamètre de dilatation, mais empêche le rétrécissement radial depuis le diamètre de dilatation.

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