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US 7,118,592 B1Granted
Covered stent assembly for reduced-shortening during stent expansion
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsKenny L. Dang, Han Juanta, Nazanine Matin
Life of this patent
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Abstract
A polymeric material such as polyurethane, PET, or ePTFE is used to cover an intravascular stent. The cover material has an overlapping portion which is slidable upon itself so that when the stent is expanded, the cover material does not contribute to stent foreshortening, if any. The cover material can be provided with holes to permit endothelialization and can be drug loaded to facilitate repair of a damaged vessel.
Claims22
A stent assembly, comprising:
- an intravascular stent;
- a cover material surrounding the stent and having a first section and a second section, the first and second sections forming an overlap portion;
- the overlap portion being configured so that the first section and the second section are slidable with respect to each other along the longitudinal axis of the stent;
- wherein the cover material has a distal end and a proximal end;
- and the cover material distal end and proximal end are attached to the stent;
- wherein the overlap portion is positioned between the distal end and the proximal end of the cover material;
- and
- wherein the first section has a proximal end and a distal end and the first section is shorter than the overall length of the stent.
5 more elements
A covered stent assembly, comprising:
- an intravascular stent having a distal end and a proximal end;
- a tubular cover material covering at least a portion of the stent wherein the cover material is formed of a first section and a second section;
- and
- the first section and second section each having a proximal end and a distal end, wherein the proximal end of the second section and the distal end of the first section are slidable along the longitudinal axis of the stent and form an overlap portion so that as the stent expands the overlap portion shortens along the longitudinal axis of the stent.
1 more element
Dependencies are inferred from the claim text.