Hybrid stent
First Claim
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1. An intravascular stent, comprising:
- a plurality of flexible cylindrical rings being expandable in a radial direction, each of the rings having a first delivery diameter and a second implanted diameter and being aligned on a common longitudinal axis;
each of the rings being formed of a metallic material;
a plurality of flexible links formed of a polymer and each of the links having sufficient column strength to axially separate the cylindrical rings;
each of the polymer links has a first end and a second end, the first and second ends being attached to adjacent cylindrical rings to connect adjacent cylindrical rings together; and
at least one link being attached between adjacent rings to form the stent.
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Abstract
The invention is directed to an expandable stent for implantation in a body lumen, such as a coronary artery. The stent consists of radially expandable cylindrical rings generally aligned on a common axis and interconnected by one or more links. At least some of the links are formed of a polymer material providing longitudinal and flexural flexibility to the stent while maintaining sufficient column strength to space the rings along the longitudinal axis.
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Citations
10 Claims
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1. An intravascular stent, comprising:
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a plurality of flexible cylindrical rings being expandable in a radial direction, each of the rings having a first delivery diameter and a second implanted diameter and being aligned on a common longitudinal axis;
each of the rings being formed of a metallic material;
a plurality of flexible links formed of a polymer and each of the links having sufficient column strength to axially separate the cylindrical rings;
each of the polymer links has a first end and a second end, the first and second ends being attached to adjacent cylindrical rings to connect adjacent cylindrical rings together; and
at least one link being attached between adjacent rings to form the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification