HELICAL HYBRID STENT
First Claim
1. A stent having a tubular structure comprising:
- a helically coiled main stent component having a first and second side bands and first and second end bands, wherein each of the bands has an undulating pattern, wherein the first and second side bands are intermittently connected, and the end bands form right cylinders at the longitudinal ends of the stent; and
a securement maintaining the tubular structure of the stent.
1 Assignment
0 Petitions
Accused Products
Abstract
An expandable helical stent is provided, wherein the stent may be formed of a main stent component and a securement. The main stent component is formed from a flat strip having one or more undulating side bands that may be connected to form geometrically shaped cells and are helically wound to form a stent. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical windings contributes to maintaining the tubular shape and uniformity of the helically coiled stent. Alternatively, the flat strip may comprise a single undulating pattern. At the ends of the main stent component are end bands, which when wound, form a cylindrical ring. In one embodiment, one or more struts of the main stent component may have a width sufficient to include one or more fenestrations. The fenestrated struts may be connected by loops or turns wherein the material is narrower than that of the fenestrated struts to provide enhanced flexibility. The helical tubular is maintained with a securement.
159 Citations
43 Claims
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1. A stent having a tubular structure comprising:
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a helically coiled main stent component having a first and second side bands and first and second end bands, wherein each of the bands has an undulating pattern, wherein the first and second side bands are intermittently connected, and the end bands form right cylinders at the longitudinal ends of the stent; and a securement maintaining the tubular structure of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A main stent component in the form of a flat strip comprising:
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a first side band having undulations; a second side band having undulations and connected to the first side band; and a first end band having undulations, a first edge, and a second edge, said first end band connected to said first side band and extending at an oblique angle to said first side band. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 40, 41)
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30. A main stent component in the form of a flat strip comprising:
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a side band having undulations; a first end band having undulations, a first edge and a second edge, said first end band connected to said side band and extending at an oblique angle to said side band; and a second end band having undulations, a first edge and a second edge, said second end band connected to said side band and extending at an oblique angle to said side band, wherein said side band and end band having an undulating pattern of struts joined by loops, wherein one or more said struts contain a fenestration and said loops having a width narrower than the width of said struts containing said fenestration. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 42, 43)
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Specification