Intravascular stent
AssigneeAbbott Cardiovascular Systems Inc.
InventorsMarc S. Kreidler, Jessica P. Miller
Life of this patent
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Abstract
A stent design reduces the likelihood of contact among structural members when the stent diameter is reduced before insertion into the body. In one approach, an undulating link has a J-shaped profile or has an angled portion on one side at the peak of the link, in order to reduce contact during crimping. The stent may also include structural features that improve such aspects as flexibility, the coatibility of a drug coating onto the stent, flare reduction, stent retention within the body and/or reduction of the minimum diameter of the stent during crimping.
Claims15
1-58. (canceled)
A flexible intravascular stent for use in a body lumen, comprising:
- a plurality of cylindrical rings aligned along a common longitudinal axis;
- at least one link connecting adjacent cylindrical rings;
- and
- a proximal end ring having five symmetric crests of equal height.
The stent of claim 60, wherein the stent further comprises at least one undulating link attaching each cylindrical ring to an adjacent cylindrical ring, the undulating links having a curved portion extending transverse to the stent longitudinal axis toward the second peak;
- and
- at least one undulating link having a first arm and a second arm, the first arm being substantially straight and substantially parallel to the longitudinal axis, and the second arm having a first substantially straight portion that is substantially parallel to the longitudinal axis and a second, angled portion leading to the curve.
The stent of claim 72, wherein the stent further comprises a short crest having an upward angulation.
Dependencies are inferred from the claim text.