Helical hybrid stent
First Claim
1. A stent comprising:
- a helical main stent component having a tubular structure extending from a first end to a second end, the helical main stent component having a first side band and a second side band, wherein the first and second side bands are coextensive and wherein each of the first side band and the second side band has an undulating pattern and forms a plurality of helical windings;
a polymer material interconnecting the plurality of the helical windings, wherein the polymer material extends in gaps between the plurality of helical windings; and
a drug included with at least one of the group consisting of the helical main stent component and the polymer material.
1 Assignment
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Accused Products
Abstract
An expandable helical stent is provided, wherein the stent may be formed of an amorphous metal alloy or other non-amorphous metal with a securement. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic particular to that stent. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other-maintain the tubular shape of the helically coiled stent and prevent the polymer layer from sagging at any point between cycles of the coils.
404 Citations
36 Claims
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1. A stent comprising:
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a helical main stent component having a tubular structure extending from a first end to a second end, the helical main stent component having a first side band and a second side band, wherein the first and second side bands are coextensive and wherein each of the first side band and the second side band has an undulating pattern and forms a plurality of helical windings; a polymer material interconnecting the plurality of the helical windings, wherein the polymer material extends in gaps between the plurality of helical windings; and a drug included with at least one of the group consisting of the helical main stent component and the polymer material. - 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)
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31. A stent comprising:
a helical main stent component having a tubular structure extending from a first end to a second end, the helical main stent component having a first side band and a second side band, wherein the first and second side bands are coextensive and wherein each of the first side band and the second side band has an undulating pattern and forms a plurality of helical windings; a polymer material interconnecting the plurality of the helical windings; a drug included with at least one of the group consisting of the helical main stent component and the polymer material; and a plurality of first cross struts connecting the first side band to the second side band, wherein a length of the plurality of first cross struts shortens toward the first and second ends.
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32. A stent comprising:
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a helical main stent component having a tubular structure extending from a first end to a second end, the helical main stent component having a first side band and a second side band, wherein the first and second side bands are coextensive and wherein each of the first side band and the second side band has an undulating pattern and forms a plurality of helical windings; a polymer material interconnecting at least the plurality of helical windings; a drug included with at least one of the group consisting of the helical main stent component and the polymer material; and a first end band at a first end of the first side band and a second end band at a second end of the second side band, wherein the first end band comprises a hook.
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33. A stent comprising:
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a helical main stent component having a tubular structure extending from a first end to a second end, the helical main stent component having a first side band and a second side band, wherein the first and second side bands are coextensive and wherein each of the first side band and the second side band has an undulating pattern and forms a plurality of helical windings; a polymer material interconnecting the plurality of the helical windings; and a drug included with at least one of the group consisting of the helical main stent component and the polymer material, wherein each of the first and second side bands forms a plurality of peaks and troughs, and wherein troughs of the first side band are out of phase with troughs of the second side band, and wherein the peaks of the first side band are out of phase with peaks of the second side band.
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34. A method of delivering a stent to a target vessel, comprising steps of:
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introducing into a vessel said stent comprising a helical main stent component extending from a first end to a second end, the helical main stent component having a first side band and a second side band, wherein the first and second side bands are coextensive and wherein each of the first side band and the second side band has an undulating pattern and forms a plurality of helical windings, a polymer material interconnecting at least a plurality of the main stent component helical windings wherein the polymer material extends in gaps between the plurality of helical windings, and a drug; and delivering said stent to said target vessel. - View Dependent Claims (35, 36)
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Specification