US5873906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedures for introducing stents and stent-grafts
Assignee: W.L. Gore and Associates Inc
•
Filing: 1997-07-21
•
Granted: 1999-02-23
•
Expires: 2017-07-21
Abstract
Abstract This invention is a method of using a medical device. The device is a foldable stent or stent-graft which may be percutaneously delivered with (or on) a catheter, typically an endovascular catheter, to a body cavity or lumen and then expanded. The expandable stent structure utilizes torsional members which distribute bending and folding loads in such a way that the stent is not plastically deformed. 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 blood-compatible material which may, if desired, be reinforced with fibers. The stent is able to provide collapsible support for otherwise frangible graft material. When used with super-elastic alloys, the stent may be collapsed at a convenient temperature either above or, preferably, below the transition temperature of the alloy. The deployment procedures may involve the use of an outer sleeve to maintain the stent or stent-graft at a reduced diameter or may involve one or more external or internal "slip-lines" or "tether wires" to hold and then to release the device.
Inventors
- 👤 Lilip Lau
- 👤 Charles T. Maroney
- 👤 William M. Hartigan
- 👤 Sharon Lam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/844; A61F2/90; A61F2/91; A61F2/915; A61F2/92; A61F2/89; 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; A61F2002/828; A61F2002/91508; A61F2002/91516; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2002/91575; A61F2002/9505; A61F2002/9511; A61F2/962; A61F2/966; A61F2002/9665; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2220/00; A61F2220/0025; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0039; A61F2230/0041; A61F2230/006; A61F2230/0063; A61F2230/0073; A61F2230/0078; 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: 14
Claim 1
Independent Claim
96 words
A method for introducing a self-expanding stent-graft into a lumen comprising the steps of: providing a self-expanding stent-graft in a folded configuration and maintained in said folded configuration by a removable, longitudinally positioned slip line attached along a longitudinal fold edge, said graft comprising a collagen material; introducing said folded self-expanding stent-graft to a selected site in a lumen; and axially withdrawing said slip line in a direction substantially aligned with a longitudinal axis of said self-expanding stent-graft, thereby removing said slip line to allow the stent-graft to expand at the selected site in said lumen.
Claim 2
Independent Claim
96 words
A method for introducing a self-expanding stent-graft into a lumen comprising the steps of: providing a self-expanding stent-graft in a folded configuration and maintained in said folded configuration by a removable, longitudinally positioned slip line attached along a longitudinal fold edge, said graft comprising a collagen material; introducing said folded self-expanding stent-graft to a selected site in a lumen; and axially withdrawing said slip line in a direction substantially aligned with a longitudinal axis of said self-expanding stent-graft, thereby removing said slip line to allow the stent-graft to expand at the selected site in said lumen.
Claim 3
Dependent Claim
14 words
The method of claim 1 in which the selected site is a vascular site.
Claim 4
Dependent Claim
26 words
The method of claim 1 in which the self-expanding stent comprises loops along said fold line in the stent through which the slip line is introduced.
Claim 5
Dependent Claim
11 words
The method of claim 1 in which the stent is metallic.
Claim 6
Dependent Claim
12 words
The method claim 1 in which the stent comprises a super-elastic alloy.
Claim 7
Dependent Claim
13 words
The method of claim 1 in which the stent comprises a nickel-titanium alloy.
Claim 8
Dependent Claim
24 words
The method of claim 1 where the stent comprises a helically positioned undulating member forming multiple turns about a longitudinal axis of said stent-graft.
Claim 9
Dependent Claim
26 words
The method of claim 7 where said undulating member includes undulations and a flexible link passes through undulations on adjacent helical turns of said undulating member.
Claim 10
Dependent Claim
20 words
The method of claim 8 where said flexible link maintains said undulations in phased relationship between said adjacent helical turns.
Claim 11
Dependent Claim
19 words
The method of claim 1 where the graft further comprises a tubular member, said tubular member including reinforcing fibers.
Claim 12
Dependent Claim
16 words
The method of claim 1 where the graft further comprises a tubular member including radiopaque markers.
Claim 13
Independent Claim
93 words
A method for introducing a self-expanding stent into a lumen comprising: providing a self-expanding stent-graft in a folded configuration and maintained in said folded configuration by a removable, longitudinally positioned slip line woven along a longitudinal fold line of said folded configuration using a sack knot, said graft comprising collagen; introducing said folded self-expanding stent-graft to a selected site in a lumen; and axially withdrawing said slip line in a direction substantially aligned with said longitudinal fold line, thereby unweaving said slip line to allow the stent-graft to expand at the selected site.
Claim 14
Independent Claim
93 words
A method for introducing a self-expanding stent into a lumen comprising: providing a self-expanding stent-graft in a folded configuration and maintained in said folded configuration by a removable, longitudinally positioned slip line woven along a longitudinal fold line of said folded configuration using a sack knot, said graft comprising collagen; introducing said folded self-expanding stent-graft to a selected site in a lumen; and axially withdrawing said slip line in a direction substantially aligned with said longitudinal fold line, thereby unweaving said slip line to allow the stent-graft to expand at the selected site.
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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) | 2002-02-22 | 2002-08-24 | 2003-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-22 | 2006-08-24 | 2007-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-22 | 2010-08-24 | 2011-02-23 | $7700.00 | Window Closed / Lapsed |