Intravascular stent with increasing coating retaining capacity
First Claim
Patent Images
1. 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, connector struts and cells, the tubular structure having a first diameter which permits intraluminal delivery of the tubular structure into the body passageway having a lumen, 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.
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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.
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Citations
64 Claims
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1. An expandable stent, comprising:
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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, connector struts and cells, the tubular structure having a first diameter which permits intraluminal delivery of the tubular structure into the body passageway having a lumen, 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 43)
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39. An expandable stent, comprising:
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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, connector struts and cells, the tubular structure having a first diameter which permits intraluminal delivery of the tubular structure into the body passageway having a lumen, 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; and
a coating substance on at least a portion of outer surface of the stent including and extending into at least a portion of the cavities. - View Dependent Claims (40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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55. A stent assembly, comprising:
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a balloon; and
an expandable stent positioned at an exterior of the balloon, the stent including, 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, connector struts and cells, the tubular structure having a first diameter which permits intraluminal delivery of the tubular structure into the body passageway having a lumen, and a second expanded and deformed diameter upon the application from the interior of the tubular member of a radially, outwardly extending force applied by the balloon;
a plurality of cavities formed in the outer surface of the stent; and
a coating substance on at least a portion of outer surface of the stent including and extending into at least a portion of the cavities. - View Dependent Claims (54, 56, 57, 58, 59, 60)
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61. A method of manufacturing an intravascular stent, comprising:
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forming an intravascular stent having an inner surface and an outer surface; and
forming a plurality of cavities on the outer surface of the intravascular stent; and
disposing on at least a portion of the outer surface and at least a portion of the plurality of cavities a coating substance that inhibits restenosis. - View Dependent Claims (62, 63, 64)
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Specification