Intravascular stent with increasing coating retaining capacity
AssigneeSciMed Life Systems, Inc.
InventorG. David Jang
Life of this patent
Estimating the term…
Abstract
An expandable stent includes a tubular structure with an outer surface positionable adjacent to a vessel wall and an inner surface facing a lumen of a body passageway. The tubular structure further includes a plurality of expansion struts, connector struts and cells. The tubular structure has a first diameter which permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter which is achieved upon the application of a radially, outwardly extending force. A plurality of cavities are formed in the outer surface of the stent.
Claims21
An expandable stent, comprising:
- a tubular structure including an outer surface positionable adjacent to a vessel wall, an inner surface facing a lumen of a body passageway, a plurality of expansion struts that are substantially parallel to each other, connector struts, and cells, the tubular structure having a first diameter that permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter upon the application from the interior of the tubular member of a radially, outwardly extending force;
- and
- a plurality of cavities formed in the outer surface of the stent wherein the plurality of cavities are micro-holes or micro-slits that extend from the outer surface through the inner surface, and wherein the micro-holes or micro-slits are configured to provide a plurality of reservoirs for a substance;
- and
- a substance contained in said reservoirs.
An expandable stent, comprising:
- a tubular structure including an outer surface positionable adjacent to a vessel wall, an inner surface facing a lumen of a body passageway, a plurality of expansion struts that are substantially parallel to each other, connector struts, and cells, the tubular structure having a first diameter that permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter upon the application from the interior of the tubular member of a radially, outwardly extending force;
- a plurality of cavities formed in the outer surface of the stent wherein the plurality of cavities are micro-holes or micro-slits that extend from the outer surface through the inner surface, and wherein the micro-holes or micro-slits are configured to provide a plurality of reservoirs for a substance;
- and
- a substance disposed on at least a portion of outer surface of the stent including and extending into at least a portion of the cavities contained in said reservoirs.
Dependencies are inferred from the claim text.