Balloon expandable bioabsorbable stent with a single stress...

Details Balloon expandable bioabsorbable stent with a single stress... Balloon expandable bioabsorbable stent with a single stress...

A - Human Necessities

61

F

A61F 2/90 (2006.01)

Patent

CA 2709979

An expandable, implantable medical device, such as an intraluminal stent (10) fabricated from polymeric materials, includes a plurality of elongated struts (16) in consecutive series and alternating stress concentration junctions (18) interconnecting ends of adjacent struts (16). When the stent (10) is in an expanded condition, the adjacent struts (16) form expanded substantial V- shapes and stresses are concentrated within the junctions (18). The junctions (18) define pivot points (P) for the respective attached, adjacent struts (16). Each of the pivot points (P) is located substantially on a line bisecting the V-shapes formed by the struts (16), when the stent (10) is ex anded.

La présente invention concerne un dispositif médical implantable et expansible, tel qu'un stent intra-luminal (10) fabriqué à partir de matériaux polymères, qui comprend une pluralité d'entretoises allongées (16) en séries consécutives et des jonctions de concentration des contraintes alternées (18) interconnectant les extrémités des entretoises adjacentes (16). Lorsque le stent (10) se trouve dans une condition déployée, les entretoises adjacentes (16) forment des formes en V substantielles déployées et les contraintes sont concentrées à l'intérieur des jonctions (18). Les jonctions (18) définissent des points de pivot (P) pour les entretoises (16) adjacentes et fixées respectives. Chacun des points de pivot (P) se trouve sensiblement sur une ligne bissectant les formes de V formées par les entretoises (16), lorsque le stent (10) est déployé.

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