Ostial stent and balloon
First Claim
1. A cardiovascular stent and balloon combination comprising:
- a stent, said stent comprising a first stent portion having at least a first degree of expandability and a second stent portion having at least a second degree of expandability greater than said first degree of expandability, said second stent portion terminating at one end of said stent; and
a balloon, said balloon comprising first and second balloon portions, said second balloon portion being inflatable to a larger diameter than a diameter of said first balloon portion, said balloon being positionable at least partially within said stent, whereby said first balloon portion is positioned at least partially within said first stent portion and said second balloon portion is positioned at least partially within said second stent portion.
2 Assignments
0 Petitions
Accused Products
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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Citations
27 Claims
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1. A cardiovascular stent and balloon combination comprising:
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a stent, said stent comprising a first stent portion having at least a first degree of expandability and a second stent portion having at least a second degree of expandability greater than said first degree of expandability, said second stent portion terminating at one end of said stent; and
a balloon, said balloon comprising first and second balloon portions, said second balloon portion being inflatable to a larger diameter than a diameter of said first balloon portion, said balloon being positionable at least partially within said stent, whereby said first balloon portion is positioned at least partially within said first stent portion and said second balloon portion is positioned at least partially within said second stent portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of treating a secondary cardiovascular vessel extending from a primary cardiovascular vessel, said method comprising the steps of:
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providing a stent having first and second stent portions, said second stent portion being more expandable than said first stent portion;
providing a balloon having first and second balloon portions, said second balloon portion being expandable to a larger diameter than a diameter of said first balloon portion;
positioning said balloon at least partially within said stent so that said first balloon portion is at least partially within said first stent portion and said second balloon portion is at least partially within said second stent portion;
positioning said stent and balloon so that said first stent portion is located at a first vessel and said second stent portion is located at a second vessel;
inflating said second balloon portion to expand said second stent portion to form a stent flange;
engaging said stent flange with a wall of the second vessel with said first stent portion and said first balloon portion being within the first vessel; and
inflating said first balloon portion to expand said first stent portion to support the first vessel. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A stent balloon comprising:
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a first inflatable portion having a first diameter when inflated; and
a second inflatable portion having a second diameter when inflated, said second diameter being greater than said first diameter, whereby said stent balloon is capable of radially expanding a stent in which it is positioned to two different extents corresponding to said first and second diameters, said second inflatable portion being at least partially inflatable independently from said first inflatable portion. - View Dependent Claims (19, 20, 21)
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22. A cardiovascular stent comprising:
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a first portion having at least a first degree of expandability;
a second portion having a second degree of expandability greater than said first degree of expandability, said second portion terminating at an end of said stent, said second portion being expandable to a progressively increased diameter along said second portion and toward said end of said stent, said second portion being expandable to form a flange that is generally transverse to a longitudinal direction of said first portion; and
a third portion between said first and second portions, said third portion having a third degree of expandability that is different from said first and second degrees of expandability. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification