US6017362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding self-expandable intravascular stent
Assignee: W.L. Gore and Associates Inc
•
Filing: 1997-01-22
•
Granted: 2000-01-25
•
Expires: 2017-01-22
Abstract
Abstract This invention is a medical device and a method of using it. The device is a foldable stent or stent-graft which may be percutaneously deliverable with (or on) an endovascular catheter or via other surgical or other techniques and then expanded. The expandable stent structure utilizes at least one torsional sector which allows it to be folded to a very small diameter prior to deployment as a stent. The stent may be expanded with the use of an installation device such as a balloon but preferably is used as a self-expandable device. The stent may be flared on at least one of its ends to promote smooth blood flow at that flare and to assure that the stent will remain in the chosen position within the body. The stent's configuration allows it to be folded or otherwise compressed to a very small diameter prior to deployment without changing the length of the stent. The graft component cooperating with the stent is tubular and preferably is a blood-compatible collagenous material which may, if desired, be reinforced with fibers. The tubular member may be cast onto or otherwise attached or imbedded into the stent structure to form a stent-graft.
Inventors
- 👤 Lilip Lau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61F2/844; A61F2/90; A61F2/91; A61F2/915; A61F2/92; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/95; A61F2002/061; A61F2002/072; A61F2002/075; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3008; A61F2002/30092; A61F2002/30316; A61F2002/30329; A61F2002/30462; A61F2002/9155; A61F2002/91558; A61F2002/91575; A61F2002/9505; A61F2002/9511; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2220/00; A61F2220/0025; A61F2220/0058; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0041; A61F2230/006; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029; A61F2310/00035; A61F2310/00137; A61F2310/00149
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
95 words
A method for installing a self-expanding stent into a lumen comprising the steps of: providing a collapsed self-expanding stent having a longitudinal axis and at least one fold line, said stent including at least one assembly extending circumferentially about said longitudinal axis and maintained in said collapsed state by a longitudinally positioned release line associated with said stent, inserting said collapsed self-expanding stent into the lumen, and releasing the collapsed self-expanding stent through an axial directed force applied to said release line to allow the stent to expand at a selected site in a lumen.
Claim 2
Independent Claim
95 words
A method for installing a self-expanding stent into a lumen comprising the steps of: providing a collapsed self-expanding stent having a longitudinal axis and at least one fold line, said stent including at least one assembly extending circumferentially about said longitudinal axis and maintained in said collapsed state by a longitudinally positioned release line associated with said stent, inserting said collapsed self-expanding stent into the lumen, and releasing the collapsed self-expanding stent through an axial directed force applied to said release line to allow the stent to expand at a selected site in a lumen.
Claim 3
Dependent Claim
11 words
The method of claim 1 where the selected site is vascular.
Claim 4
Dependent Claim
17 words
The method of claim 1 in which the collapsed stent is provided by folding the self-expanding stent.
Claim 5
Dependent Claim
25 words
The method of claim 3 in which the folded self-expanding stent is maintained in a collapsed condition prior to release by an exterior sliding sheath.
Claim 6
Dependent Claim
28 words
The method of claim 3 in which the folded self-expanding stent is maintained in a collapsed condition prior to release by a slip line interwoven with said stent.
Claim 7
Dependent Claim
12 words
The method of claim 1 in which the stent comprises a metal.
Claim 8
Dependent Claim
13 words
The method of claim 6 in which the stent comprises a super-elastic alloy.
Claim 9
Dependent Claim
13 words
The method of claim 7 in which the stent comprises a nickel-titanium alloy.
Claim 10
Dependent Claim
18 words
The method of claim 1 in which the at least one assembly comprises a plurality of ring assemblies.
Claim 11
Dependent Claim
19 words
The method of claim 9 where adjacent ring assemblies are joined to one another with longitudinally extending tie members.
Claim 12
Dependent Claim
19 words
The method of claim 1 where said at least one stent assembly has a plurality of serially disposed undulations.
Claim 13
Dependent Claim
17 words
The method of claim 1 where the at least one stent assembly comprises a stainless steel material.
Claim 14
Dependent Claim
16 words
The method of claim 1 where the at least one stent assembly comprises a platinum-tungsten alloy.
Claim 15
Dependent Claim
17 words
The method of claim 1 where the at least one stent ring assembly comprises a sheet material.
Claim 16
Dependent Claim
17 words
The method of claim 1 where the at least one stent ring assembly comprises a wire material.
Claim 17
Dependent Claim
17 words
The method of claim 1 where the at least one stent ring assembly is produced from tubing.
Claim 18
Dependent Claim
16 words
The method of claim 1, wherein said at least one assembly comprises a cobalt chromium alloy.
Claim 19
Independent Claim
96 words
A method for installing a self-expanding stent-graft into a lumen comprising: providing a collapsed self-expanding stent-graft having a longitudinal axis and at least one fold line, said stent-graft including at least one stent assembly extending circumferentially about said axis and maintained in said collapsed state by a longitudinally positioned release line associated with said stent-graft, and a coaxially positioned tubular graft member, inserting said collapsed self-expanding stent-graft into the lumen, and releasing the collapsed self-expanding stent-graft to allow the stent-graft to expand at the selected site by applying an axially directed force to said release line.
Claim 20
Independent Claim
96 words
A method for installing a self-expanding stent-graft into a lumen comprising: providing a collapsed self-expanding stent-graft having a longitudinal axis and at least one fold line, said stent-graft including at least one stent assembly extending circumferentially about said axis and maintained in said collapsed state by a longitudinally positioned release line associated with said stent-graft, and a coaxially positioned tubular graft member, inserting said collapsed self-expanding stent-graft into the lumen, and releasing the collapsed self-expanding stent-graft to allow the stent-graft to expand at the selected site by applying an axially directed force to said release line.
Claim 21
Dependent Claim
11 words
The method of claim 18 where the selected site is vascular.
Claim 22
Dependent Claim
13 words
The method of claim 18 in which the collapsed self-expanding stent-graft is folded.
Claim 23
Dependent Claim
25 words
The method of claim 20 in which the folded self-expanding stent-graft is maintained in a collapsed condition prior to release by an exterior sliding sheath.
Claim 24
Dependent Claim
28 words
The method ot claim 20 in which the folded self-expanding stent-graft is maintained in a collapsed condition prior to release by a slip line interwoven with said stent-graft.
Claim 25
Dependent Claim
11 words
The method of claim 18 in which the stent is metallic.
Claim 26
Dependent Claim
13 words
The method of claim 18 in which the stent is a super-elastic alloy.
Claim 27
Dependent Claim
13 words
The method of claim 18 in which the stent comprises a nickel-titanium alloy.
Claim 28
Dependent Claim
19 words
The method of claim 18 in which the at least one stent assembly comprises a plurality of ring assemblies.
Claim 29
Dependent Claim
14 words
The method of claim 26 wherein adjacent ring assemblies are joined with tie members.
Claim 30
Dependent Claim
16 words
The method of claim 18 where the at least one stent ring assembly has multiple undulations.
Claim 31
Dependent Claim
17 words
The method of claim 18 where the at least one stent ring assembly comprises a sheet material.
Claim 32
Dependent Claim
17 words
The method of claim 18 where the at least one stent ring assembly comprises a wire material.
Claim 33
Dependent Claim
17 words
The method of claim 18 where the at least one stent-graft ring assembly is produced from tubing.
Claim 34
Dependent Claim
14 words
The method of claim 18 wherein the tubular graft member comprises a polyethylene terephthalate.
Claim 35
Dependent Claim
12 words
The method of claim 18 where the tubular member comprises a polyfluorocarbon.
Claim 36
Dependent Claim
13 words
The stent of claim 18 where the tubular craft member comprises a polyurethane.
Claim 37
Dependent Claim
12 words
The method of claim 34 wherein said tubular graft contains radiopaque markers.
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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) | 2003-01-24 | 2003-07-26 | 2004-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-24 | 2007-07-26 | 2008-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-24 | 2011-07-26 | 2012-01-25 | $7700.00 | Window Closed / Lapsed |