US6652575B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent with smooth ends
Assignee: Boston Scientific Scimed Inc
•
Filing: 2001-12-14
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Granted: 2003-11-25
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Expires: 2021-12-14
Abstract
Abstract A stent having at least one smooth end is disclosed. The stent may include a coating or coatings on one or both end portions to provide a smooth finish to reduce possible damage to body passages when the stent is deployed and delivered. The stent may also contain drugs or surgical adhesives or a combination thereof in or on the coated portion of the stent. The stent may also be of the type where the materials of the stent may be treated to have a smooth flexible end or ends. The stent may also be of a configuration such that at least one end is more flexible than the middle portion of the stent.
Inventors
- 👤 Lixiao Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:58
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61L; A61L31/00; A61L31/08; A61L31/10; A61L31/14; A61L31/16; A61F2/88; A61F2/92; A61F2002/91533; A61F2002/91541; A61F2002/9155; A61F2002/91558; A61F2220/00; A61F2220/0025; A61F2220/005; A61F2250/00; A61F2250/0014; A61F2250/0018; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/0024; A61L2300/00; A61L2300/20; A61L2300/25; A61L2300/40; A61L2300/416; A61L2300/60; A61L2300/606; A61L2300/608; A61L2420/00; A61L2420/08
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
74 words
A stent comprising a main body portion having a first end portion, a second end portion, a middle portion having an outer surface and a flow passage defined therethrough, wherein the first end portion comprises an edge, wherein at least a portion of the edge has a biocompatible coating disposed directly thereon, wherein the biocompatible coating comprises a polymer or a drug, and wherein the middle portion surface is free of the biocompatible coating.
Claim 2
Dependent Claim
74 words
A stent comprising a main body portion having a first end portion, a second end portion, a middle portion having an outer surface and a flow passage defined therethrough, wherein the first end portion comprises an edge, wherein at least a portion of the edge has a biocompatible coating disposed directly thereon, wherein the biocompatible coating comprises a polymer or a drug, and wherein the middle portion surface is free of the biocompatible coating.
Claim 3
Dependent Claim
19 words
The stent of claim 1 , wherein the entire edge of the first end portion has the biocompatible coating.
Claim 4
Dependent Claim
14 words
The stent of claim 1 , wherein the biocompatible coating comprises apertures or perforations.
Claim 5
Dependent Claim
21 words
The stent of claim 1 , wherein the biocompatible coating comprises a plurality of layers comprising at least one coating material.
Claim 6
Dependent Claim
18 words
The stent of claim 4 , wherein the plurality of layers is comprised of the same coating material.
Claim 7
Dependent Claim
17 words
The stent of claim 4 , wherein the plurality of layers is comprised of different coating materials.
Claim 8
Dependent Claim
12 words
The stent of claim 1 , wherein the polymer is a bioadhesive.
Claim 9
Dependent Claim
16 words
The stent of claim 1 , wherein the biocompatible coating comprises the polymer and the drug.
Claim 10
Dependent Claim
13 words
The stent of claim 8 , wherein the polymer comprises a gel-like material.
Claim 11
Dependent Claim
25 words
The stent of claim 8 , wherein the drug is selected from the group consisting of paclitaxel, an RGD peptide-containing compound, tranilast, trapidil and probucol.
Claim 12
Dependent Claim
18 words
The stent of claim 1 , wherein the first end portion is more flexible than the middle portion.
Claim 13
Dependent Claim
37 words
The stent of claim 1 , wherein the first end portion and middle portion are comprised of a mesh, and wherein the mesh of the first end portion is looser than the mesh of the middle portion.
Claim 14
Independent Claim
89 words
A method for manufacturing a stent comprising a main body portion having a first end portion, a second end portion, a middle portion having a surface and a flow passage defined therethrough, wherein the first end portion comprises a surface, and wherein the method comprises treating the surface of the first end portion to form a smooth surface; and applying a biocompatible coating directly to at least a portion of the treated surface of the first end portion, wherein the middle portion surface is free of the biocompatible coating.
Claim 15
Independent Claim
89 words
A method for manufacturing a stent comprising a main body portion having a first end portion, a second end portion, a middle portion having a surface and a flow passage defined therethrough, wherein the first end portion comprises a surface, and wherein the method comprises treating the surface of the first end portion to form a smooth surface; and applying a biocompatible coating directly to at least a portion of the treated surface of the first end portion, wherein the middle portion surface is free of the biocompatible coating.
Claim 16
Dependent Claim
15 words
The method of claim 13 , wherein the smooth surface is formed by electro polishing.
Claim 17
Independent Claim
78 words
A method of manufacturing a stent comprising a main body portion having a first end portion having a surface, a second end portion, a middle portion having a surface and a flow passage defined therethrough, wherein the method comprises treating the first end portion surface to form a flexible first end portion; and applying a biocompatible coating directly to at least a portion of the treated surface, wherein the middle portion surface is free of the biocompatible coating.
Claim 18
Independent Claim
78 words
A method of manufacturing a stent comprising a main body portion having a first end portion having a surface, a second end portion, a middle portion having a surface and a flow passage defined therethrough, wherein the method comprises treating the first end portion surface to form a flexible first end portion; and applying a biocompatible coating directly to at least a portion of the treated surface, wherein the middle portion surface is free of the biocompatible coating.
Claim 19
Dependent Claim
16 words
The method of claim 15 , wherein the flexible first end portion is formed by heat-treating.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-11-24 | 2007-05-26 | 2007-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-11-24 | 2011-05-26 | 2011-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-11-24 | 2015-05-26 | 2015-11-25 | $7700.00 | Window Closed / Lapsed |