US6159565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin-wall intraluminal graft
Assignee: W.L. Gore and Associates Inc
•
Filing: 1993-08-18
•
Granted: 2000-12-12
•
Expires: 2013-08-18
Abstract
Abstract An intraluminal vascular graft in the form of a tube of porous expanded polytetrafluoroethylene film wherein the porous polytetrafluoroethylene film has a microstructure containing a multiplicity of fibrils oriented substantially parallel to each other. The tube has a wall thickness of less than about 0.25 mm and is made from at least one first layer and at least one second layer of porous polytetrafluoroethylene film, wherein the fibrils of the first and second layers are oriented substantially perpendicular to each other. Preferably the fibrils of the at least one first layer are oriented substantially parallel to the longitudinal axis of the tube and the fibrils of the at least one second layer of porous polytetrafluoroethylene film are oriented substantially circumferential to the tube. The first and second layers may be inner and outer layers respectively, or alternatively their relationship may be reversed. Alternatively, either of the first and second film layers may be replaced with alternative reinforcing components such as a braid or at least one reinforcing rib.
Inventors
- 👤 Carey V. Campbell
- 👤 James D. Lewis
- 👤 David J. Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:01
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/04; A61L31/048; A61L29/00; A61L29/04; A61L29/041; A61L29/08; A61L29/085; A61L31/08; A61L31/10; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B29C70/205; B29C70/207; B29C70/28; B29C70/30; B29C70/302; F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B17/3431; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2002/072; A61F2002/075; A61F2250/00; A61F2250/0058; A61F2250/0067; B29C53/00; B29C53/36; B29C53/38; B29C53/56; B29C53/58; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2105/0827; B29L; B29L2023/00; B29L2023/005; B29L2031/00; B29L2031/753; B29L2031/7542; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1352; Y10T428/1369; Y10T428/1379; Y10T428/139; Y10T428/1393; Y10T428/1397; Y10T428/31504; Y10T428/31536; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
82 words
An intraluminal graft comprising a tube having: a) an inner layer comprised of porous PTFE film having a microstructure comprised of fibrils, said fibrils being substantially parallel to one another; b) an outer layer concentrically covering said inner layer, said outer layer comprised of porous PTFE film having a microstructure comprised of fibrils, said fibrils being substantially parallel to one another and substantially perpendicular to the fibrils of the inner layer; and c) a wall thickness of less than about 0.25 mm.
Claim 2
Dependent Claim
82 words
An intraluminal graft comprising a tube having: a) an inner layer comprised of porous PTFE film having a microstructure comprised of fibrils, said fibrils being substantially parallel to one another; b) an outer layer concentrically covering said inner layer, said outer layer comprised of porous PTFE film having a microstructure comprised of fibrils, said fibrils being substantially parallel to one another and substantially perpendicular to the fibrils of the inner layer; and c) a wall thickness of less than about 0.25 mm.
Claim 3
Dependent Claim
16 words
The graft of claim 1 in which said inner layer is formed from helically wrapped film.
Claim 4
Dependent Claim
15 words
The graft of claim 2 in which the wall thickness is less than 0.10 mm.
Claim 5
Dependent Claim
15 words
The graft of claim 3 in which the wall thickness is less than 0.06 mm.
Claim 6
Dependent Claim
17 words
The graft of claim 1 in which said outer layer is helically wrapped around said inner layer.
Claim 7
Dependent Claim
15 words
The graft of claim 5 in which the wall thickness is less than 0.10 mm.
Claim 8
Dependent Claim
15 words
The graft of claim 6 in which the wall thickness is less than 0.06 mm.
Claim 9
Dependent Claim
20 words
The graft of claim 1 in which said inner layer and said outer layer are formed from helically wrapped film.
Claim 10
Dependent Claim
15 words
The graft of claim 8 in which the wall thickness is less than 0.10 mm.
Claim 11
Dependent Claim
15 words
The graft of claim 9 in which the wall thickness is less than 0.06 mm.
Claim 12
Dependent Claim
19 words
The graft of claim 1 in which said inner layer is attached to said outer layer by an adhesive.
Claim 13
Dependent Claim
12 words
The graft of claim 11 wherein the adhesive is a thermoplastic fluoropolymer.
Claim 14
Dependent Claim
13 words
The graft of claim 12 wherein the thermoplastic fluoropolymer is fluorinated ethylene propylene.
Claim 15
Dependent Claim
12 words
The graft of claim 13 wherein the fluorinated ethylene propylene is porous.
Claim 16
Dependent Claim
10 words
The graft of claim 11 wherein the adhesive is porous.
Claim 17
Dependent Claim
10 words
The graft of claim 11 wherein the adhesive is non-porous.
Claim 18
Dependent Claim
15 words
The graft of claim 1 in which the wall thickness is less than 0.10 mm.
Claim 19
Dependent Claim
15 words
The graft of claim 17 in which the wall thickness is less than 0.06 mm.
Claim 20
Dependent Claim
17 words
The graft of claim 1 having a reinforcing material between said inner layer and said outer layer.
Claim 21
Dependent Claim
12 words
The graft of claim 19 in which the reinforcing material is braided.
Claim 22
Dependent Claim
9 words
The graft of claim 1 comprising a bifurcated graft.
Claim 23
Dependent Claim
14 words
The graft of claim 1 wherein said graft incorporates at least one reinforcing rib.
Claim 24
Dependent Claim
30 words
The graft of claim 1 wherein the intraluminal graft has a longitudinal axis and wherein the fibrils of the inner porous polytetrafluoroethylene layer are substantially parallel to the longitudinal axis.
Claim 25
Dependent Claim
15 words
The graft of claim 23 in which the wall thickness is less than 0.10 mm.
Claim 26
Dependent Claim
15 words
The graft of claim 24 in which the wall thickness is less than 0.06 mm.
Claim 27
Dependent Claim
19 words
The graft of claim 1 in which said inner layer is attached to said outer layer by heat bonding.
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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) | 2003-12-12 | 2004-06-12 | 2004-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-12 | 2008-06-12 | 2008-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-12 | 2012-06-12 | 2012-12-12 | $7700.00 | Window Closed / Lapsed |