A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/06 (2006.01) A61F 2/00 (2006.01)
Patent
CA 2504339
The present invention provides a balloon-deployable stent having a progressive expansion over time and a method for using such a stent, thereby reducing restenosis. The stent has a progressive radial expansion of an armature (12) comprising a material having an elasticity allowing the self-deployment of the armature and of a matrix (14) comprising a second material having a rigidity and a conformation allowing a retention of the armature in a contracted position. The stent is deployed with the help of a balloon delivered into the armature, which allows an irreversible deformation of the matrix during the inflation of the balloon and enables a radial expansion of the armature.
L'invention concerne un stent déployable par ballonnet qui subit une dilatation progressive dans le temps ainsi qu'un procédé d'utilisation de ce stent afin de diminuer la resténose. Ce stent permet une dilatation progressive radiale, d'une part, d'une armature (12) qui comprend un matériau dont l'élasticité permet l'auto-déploiement de l'armature et, d'autre part, d'une matrice (14) qui comprend un second matériau dont la rigidité et la conformation permettent de retenir l'armature dans une position contractée. Le stent est déployé à l'aide d'un ballonnet délivré dans l'armature, ce qui permet à la matrice de se déformer de façon irréversible pendant le gonflement du ballonnet et à l'armature de se dilater dans le sens radial.
Brailovski Vladimir
Gallo Richard
Terriault Patrick
Ecole de Technologie Superieure
Institut de Cardiologie de Montreal
Socovar Societe En Commandite
Tessier Louis
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