Balloon deployable stent and method of using the same
OwnerRichard Gallo, Patrick Terriault +1inventors
InventorsRichard Gallo, Patrick Terriault, Vladimir Brailovski
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Abstract
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.
Claims21
A balloon-deployable and controlled radially expandable stent comprising:
- an armature comprising a first material having an elasticity allowing an expansion over time of said armature;
- a matrix comprising a second material having a rigidity and a conformation allowing a retention of said armature in a contracted position;
- said stent being deployed with the help of a balloon introduced into said armature, said balloon allowing an irreversible deformation of said matrix during inflation of said balloon and allowing expansion of the armature.
A method of angioplasty in an artery of a patient comprising:
- introducing and positioning in a vessel of the patient a self-deploying stent having a progressive deployment comprising an armature comprising a material having an elasticity allowing self-deployment of the armature;
- and a matrix comprising a second material having a rigidity and a conformation allowing a retention of the armature in a contracted position;
- deploying the armature using a balloon delivered in the armature, the balloon ensuring an irreversible deformation of the matrix during inflation of the balloon and allowing a self-deployment of the armature;
- and
- removing the balloon from the vessel;
- whereby a progressive self-deployment of the armature allows a positioning of the armature at a predetermined position and a diminution of a risk of restenosis.
Dependencies are inferred from the claim text.