Importance

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Abstract

A cardiovascular stent and a stent balloon have portions that provide different degrees of expandability. A distal stent portion has a first degree of expandability to support a vessel, while a proximal stent portion has a second, higher degree of expandability so that it can be radially expanded to form a flange-like structure at an inlet to the vessel. The balloon is configured to deploy the stent and includes distal and proximal balloon portions having different diameters corresponding to the distal and proximal stent portions. The balloon portions may be individually inflated. Optionally, a first stent may be deployed through one branch of a bifurcation, and a second stent may be deployed through a wall of the first stent and into another branch of the bifurcation. The flange on the second stent may position and/or secure the second stent within the first stent.

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First Claim