US6517570B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exterior supported self-expanding stent-graft
Assignee: W.L. Gore and Associates Inc
•
Filing: 1997-07-21
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Granted: 2003-02-11
•
Expires: 2017-07-21
Abstract
Abstract This is a medical device and a method of using it. The device is a foldable stent-graft which may be percutaneously delivered with (or on) an endovascular catheter, via surgical techniques or using other suitable techniques and then expanded. The stent-graft uses a kink-resistant stent structure and an interior graft which is attached to the stent in such a way that the graft does not kink and yet the stent is able to conform to curves in the blood vessel lumen. The expandable stent structure preferably has a helically deployed torsional member with an undulating shape which is wound to form the generally cylindrical shape deployed as the stent. The helical winding desirably is aligned to allow undulations in adjacent turns of the helix to be in phase. The adjacent undulating shapes are held in that phased relationship using a flexible linkage, typically made of a polymeric material. The graft component cooperating with the stent is tubular and mounted on the interior of the stent. Although it may be made of any variety of materials, it preferably is an expanded polyfluorocarbon. The graft component may be bound to the flexible linkage which holds the stent windings in phase (or the stent structure itself) at a number of sliding attachment points.
Inventors
- 👤 Lilip Lau
- 👤 Charles Maroney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:01
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/92; A61F2/86; A61F2/88; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/02; A61F2/04; A61F2/06; A61F2002/061; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3008; A61F2002/30092; A61F2002/30316; A61F2002/30329; A61F2002/30462; A61F2002/91508; A61F2002/91516; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2002/91575; A61F2002/9505; A61F2002/9511; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2210/0076; A61F2220/00; A61F2220/0025; A61F2220/0075; 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: 26
Claim 1
Independent Claim
99 words
A device comprising: a support component having multiple turns of an undulating member, said member being formed from a single continuous wire, each turn of said undulating member having multiple undulations defining multiple apexes, with undulations in one turn generally in-phase with undulations in an adjacent turn; and a tubular graft component substantially coaxial with said support component, said tubular graft component being attached to said support component only in-part, allowing unattached apexes to move longitudinally relative to said graft component; and said support component being slidably secured to said graft component such that relative movement therebetween is limited.
Claim 2
Independent Claim
99 words
A device comprising: a support component having multiple turns of an undulating member, said member being formed from a single continuous wire, each turn of said undulating member having multiple undulations defining multiple apexes, with undulations in one turn generally in-phase with undulations in an adjacent turn; and a tubular graft component substantially coaxial with said support component, said tubular graft component being attached to said support component only in-part, allowing unattached apexes to move longitudinally relative to said graft component; and said support component being slidably secured to said graft component such that relative movement therebetween is limited.
Claim 3
Independent Claim
83 words
A device comprising: a support component comprising multiple turns of an undulating member, said member being formed from a single continuous wire, each turn of said undulating member having multiple undulations which define multiple apexes, wherein undulations in one turn are generally in-phase with undulations in an adjacent turn; and a tubular graft component positioned substantially coaxially within said support component, said tubular graft component being attached to said support component to allow said apexes to move longitudinally relative to said graft component.
Claim 4
Independent Claim
83 words
A device comprising: a support component comprising multiple turns of an undulating member, said member being formed from a single continuous wire, each turn of said undulating member having multiple undulations which define multiple apexes, wherein undulations in one turn are generally in-phase with undulations in an adjacent turn; and a tubular graft component positioned substantially coaxially within said support component, said tubular graft component being attached to said support component to allow said apexes to move longitudinally relative to said graft component.
Claim 5
Dependent Claim
28 words
The device of claim 2 wherein said member is a helical member configured to form said support component and which forms said multiple turns of said support component.
Claim 6
Dependent Claim
29 words
The device of claim 3 further comprising at least one flexible link, said flexible link coupling adjacent helical turns of said support component to maintain said undulations generally in-phase.
Claim 7
Dependent Claim
19 words
The device of claim 4 , wherein said flexible link is secured to said graft component at least in-part.
Claim 8
Dependent Claim
31 words
The device of claim 2 further comprising at least one loop passing around at least a portion of one of said undulations to attach said support component to said graft component.
Claim 9
Dependent Claim
18 words
The device of claim 2 wherein the support component comprises wire and the undulations have a sinusoidal shape.
Claim 10
Dependent Claim
16 words
The device of claim 2 wherein the support component comprises wire and the undulations are U-shaped.
Claim 11
Dependent Claim
16 words
The device of claim 2 wherein the support component comprises wire and the undulations are V-shaped.
Claim 12
Dependent Claim
17 words
The device of claim 2 wherein the support component comprises wire and the undulations are ovaloid shaped.
Claim 13
Dependent Claim
18 words
The device of claim 2 wherein the support component comprises a stainless steel material or a titanium alloy.
Claim 14
Dependent Claim
13 words
The device of claim 2 wherein the support component comprises a nickeltitanium alloy.
Claim 15
Dependent Claim
13 words
The device of claim 2 wherein the tubular graft component comprises polyethylene terephthalate.
Claim 16
Dependent Claim
12 words
The device of claim 2 wherein the tubular graft component comprises polytetrafluoroethylene.
Claim 17
Dependent Claim
10 words
The device of claim 14 wherein the polytetrafluoroethylene is expanded.
Claim 18
Dependent Claim
10 words
The device of claim 14 wherein the polytetrafluoroethylene includes hexafluoropropylene.
Claim 19
Dependent Claim
12 words
The device of claim 2 wherein the tubular graft comprises a polyfluorocarbon.
Claim 20
Dependent Claim
14 words
The device of claim 2 further comprising radiopaque markers within said tubular graft member.
Claim 21
Dependent Claim
74 words
A stent-graft comprising: a self expanding stent comprising an undulating member, said member being formed from a single continuous wire arranged in a helical configuration with multiple turns and having multiple undulations, each undulation having an apex, undulations in adjacent turns being generally in-phase with one another; and a graft positioned substantially coaxially within said stent, said graft being attached to said stent to allow said apexes to move longitudinally relative to said graft.
Claim 22
Dependent Claim
74 words
A stent-graft comprising: a self expanding stent comprising an undulating member, said member being formed from a single continuous wire arranged in a helical configuration with multiple turns and having multiple undulations, each undulation having an apex, undulations in adjacent turns being generally in-phase with one another; and a graft positioned substantially coaxially within said stent, said graft being attached to said stent to allow said apexes to move longitudinally relative to said graft.
Claim 23
Dependent Claim
29 words
The device of claim 19 further comprising at least one flexible link, said flexible link coupling adjacent helical turns of said support component to maintain said undulations generally in-phase.
Claim 24
Dependent Claim
17 words
The device of claim 19 wherein the stent comprises a stainless steel material or a titanium alloy.
Claim 25
Dependent Claim
17 words
The device of claim 19 wherein the stent comprises a stainless steel material or a titanium alloy.
Claim 26
Dependent Claim
11 words
The device of claim 19 wherein the graft comprises a polyfluorocarbon.
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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) | 2006-02-10 | 2006-08-12 | 2007-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-10 | 2010-08-12 | 2011-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-10 | 2014-08-12 | 2015-02-11 | $7700.00 | Window Closed / Lapsed |