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US6929659B2
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Method of preventing the dislodgment of a stent-graft
Assignee: Lifeport Sciences LLC
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Filing: 2002-02-25
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Granted: 2005-08-16
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Expires: 2022-02-25
Abstract
Abstract Endoluminal stent-grafts include several features which restrict dilation subsequent to installation but which allow the stent-grafts to be installed in the same manner as a conventional stent-graft. According to one embodiment, sutures are attached to an expanded stent-graft. The suture material is preferably braided PET or polypropylene and sutures are interwoven into the stent at substantially regular intervals. A second embodiment utilizes a band material in lieu of suture material. A third embodiment utilizes a warp knit tubular sheath with inlay yarn. The warp knit tubular sheath with inlay yarn may also act as the graft material. The invention includes a method of using these stent-grafts to prevent the dislodgment of an endoluminal stent-graft after deployment. The method includes the step of determining the maximum stent-graft diameter and related size of dilation restriction means to prevent excessive stent-graft shortening after initial deployment.
Inventors
- 👤 Leonard Pinchuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2002/065; A61F2002/072; A61F2002/075; A61F2220/00; A61F2220/0025; A61F2220/005; A61F2220/0066; A61F2220/0075; A61F2230/00; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/0078; A61F2250/00; A61F2250/0014; A61F2250/0039; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/903
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
89 words
A method of treating an aneurysm with a stent-graft comprising the steps of: (a) determining the length of the aneurysm; (b) determining the diameter of the vessel into which a stent-graft will be placed; (c) providing a stent-graft having dilation restriction means for restricting dilation of said stent-graft beyond a maximum diameter which maximum diameter is greater than the vessel diameter of step (b); (d) trimming the stent-graft to a length that is greater than the length of the aneurysm when the stent-graft is dilated to its maximum diameter.
Claim 2
Independent Claim
89 words
A method of treating an aneurysm with a stent-graft comprising the steps of: (a) determining the length of the aneurysm; (b) determining the diameter of the vessel into which a stent-graft will be placed; (c) providing a stent-graft having dilation restriction means for restricting dilation of said stent-graft beyond a maximum diameter which maximum diameter is greater than the vessel diameter of step (b); (d) trimming the stent-graft to a length that is greater than the length of the aneurysm when the stent-graft is dilated to its maximum diameter.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the dilation restriction means of the stent-graft provided in step (c) is comprised of suture material.
Claim 4
Dependent Claim
14 words
The method of claim 2 wherein said suture material is flexible and substantially inelastic.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein said stent-graft is made of woven wires and a suture material is woven through said wires.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein the dilation restriction means of the stent-graft provided in step (c) is comprised of a plurality of sutures spaced along said stent-graft.
Claim 7
Dependent Claim
43 words
The method of claim 1 wherein the dilation restriction means of the stent-graft provided in step (c) is comprised of a plurality of sutures located in a plurality of substantially parallel planes which are substantially perpendicular to a longitudinal axis of said stent-graft.
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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) | 2008-08-15 | 2009-02-14 | 2009-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-08-15 | 2013-02-14 | 2013-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-08-15 | 2017-02-14 | 2017-08-16 | $7700.00 | Window Closed / Lapsed |