Balloon expandable stent
First Claim
Patent Images
1. An intravascular stent, comprising:
- a plurality of a first set of metallic cylindrical rings and a plurality of a second set of metallic cylindrical rings, each set of cylindrical rings being radially expandable, longitudinally aligned, and each with a first delivery diameter and a second implanted diameter;
a plurality of substantially linear metallic links connecting a plurality of adjacent cylindrical rings;
wherein the stent includes a distal section with one distal ring, a center section with a plurality of rings, and a proximal section with one proximal ring;
wherein the first set of rings are formed with a first longitudinal length and the second set of rings are formed with a second, relatively smaller longitudinal length.
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Abstract
A balloon expandable intravascular stent assembly for implantation in a body vessel, such as a coronary artery, is designed to provide stent coverage beyond the balloon working length and minimize damage to the vessel wall during balloon inflation. The stent consists of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and either directly connected or interconnected by one or more interconnecting links. The stent includes a distal section, proximal section, and center section. The rings within the distal section and proximal section may be configured with a nickel-titanium alloy and may include tabs which extend away from the center section.
39 Citations
24 Claims
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1. An intravascular stent, comprising:
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a plurality of a first set of metallic cylindrical rings and a plurality of a second set of metallic cylindrical rings, each set of cylindrical rings being radially expandable, longitudinally aligned, and each with a first delivery diameter and a second implanted diameter;
a plurality of substantially linear metallic links connecting a plurality of adjacent cylindrical rings;
wherein the stent includes a distal section with one distal ring, a center section with a plurality of rings, and a proximal section with one proximal ring;
wherein the first set of rings are formed with a first longitudinal length and the second set of rings are formed with a second, relatively smaller longitudinal length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 24)
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22. An intravascular stent, comprising:
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a plurality of a first set of cylindrical rings and a plurality of a second set of cylindrical rings, each set of cylindrical rings being radially expandable, longitudinally aligned, and each with a first delivery diameter and a second implanted diameter;
a plurality of links connecting a plurality of adjacent cylindrical rings;
wherein the stent includes a distal section, a center section, and a proximal section;
wherein the first set of rings are located within the center section and balloon expandable and wherein the second set of rings are located within the distal section and proximal section and formed from a self-expanding material.
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23. An intravascular stent, comprising:
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a plurality of a first set of cylindrical rings and a plurality of a second set of cylindrical rings, each set of cylindrical rings being radially expandable, longitudinally aligned, and each with a first delivery diameter and a second implanted diameter;
a plurality of links connecting a plurality of adjacent cylindrical rings;
wherein the stent includes a distal section, a center section, and a proximal section;
wherein the first set of rings are located within the distal section and the proximal section and formed with a plurality of tabs extending away from the center section and wherein the second set of rings are located within the center section and formed with a plurality of undulations.
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Specification