Intravascular stent
AssigneeAbbott Cardiovascular Systems Inc.
InventorsDiem Ta, Timothy Limon, Andy Denison
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Abstract
An expandable stent for implantation in a body lumen, such as an artery, is disclosed. The stent consists of a plurality of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction. The link pattern is optimized to reduce strain on the links and enhance longitudinal flexibility and security of the stent. The stent includes a distal end ring and a proximal end ring that have a length that is shorter than the length of the body rings.
Claims41
A stent, comprising:
- a tubular body having a first end ring and a second ring and a plurality of body rings therebetween;
- the end rings and the body rings being positioned in an out-of-phase relationship;
- first links connecting the end rings to the body rings and second links connecting adjacent body rings;
- the first links having a first length and the second links having a second length, the first length being greater than the second length;
- and
- the first end ring and the second end ring each having a first length that is shorter than a second length of the body rings.
A stent, comprising:
- a tubular body having a first end ring and a second ring and a plurality of body rings therebetween;
- the end rings and the body rings being positioned in an out-of-phase relationship;
- first links connecting the end rings to the body rings and second links connecting adjacent body rings;
- the first links having a first length and the second links having a second length, the first length being substantially equal to the second length;
- the first end ring and the second end ring each having a first length that is substantially equal to a second length of the body rings;
- and
- three links connect each end ring to an adjacent body ring and two links connect adjacent body rings.
Dependencies are inferred from the claim text.