Patent US5047028A successfully refreshed from Google Patents.
Patent US5718973A successfully refreshed from Google Patents.
US5718973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular intraluminal graft
Assignee: W.L. Gore and Associates Inc
•
Filing: 1995-07-26
•
Granted: 1998-02-17
•
Expires: 2015-07-26
Abstract
Abstract A tubular intraluminal graft for repairing body conduits, made from at least one layer of porous expanded PTFE film that has a microstructure having fibrils oriented in at least two directions which are substantially perpendicular to each other. The tubular intraluminal graft has a wall thickness of less than about 0.25 mm and may have a longitudinally or helically oriented seamline. Additional reinforcing components such as reinforcing ribs or braids may also be provided.
Inventors
- 👤 James D. Lewis
- 👤 David J. Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61L; A61L31/00; A61L31/08; A61L31/10; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2002/072; A61F2002/075; A61F2240/00; A61F2240/001; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1369; Y10T428/1376; Y10T428/1397; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
87 words
An intraluminal graft comprising a tube having an exterior surface, a luminal surface, ends, and a longitudinal axis, said tube being comprised of at least one layer of porous expanded polytetrafluoroethylene film wherein the porous expanded polytetrafluoroethylene film has an edge extending between the ends of the tube and has a microstructure having fibrils oriented in at least two directions which are substantially perpendicular to each other, and wherein said tube has a wall thickness of greater than about 0.08 mm and less than about 0.25 mm.
Claim 2
Dependent Claim
87 words
An intraluminal graft comprising a tube having an exterior surface, a luminal surface, ends, and a longitudinal axis, said tube being comprised of at least one layer of porous expanded polytetrafluoroethylene film wherein the porous expanded polytetrafluoroethylene film has an edge extending between the ends of the tube and has a microstructure having fibrils oriented in at least two directions which are substantially perpendicular to each other, and wherein said tube has a wall thickness of greater than about 0.08 mm and less than about 0.25 mm.
Claim 3
Dependent Claim
24 words
An intraluminal graft according to claim 1 wherein the tube has a seamline formed by overlapping the edges of the porous expanded polytetrafluoroethylene film.
Claim 4
Dependent Claim
20 words
An intraluminal graft according to claim 2 wherein the seamline is substantially parallel to the longitudinal axis of the tube.
Claim 5
Dependent Claim
22 words
An intraluminal graft according to claim 2 wherein the seamline is helically oriented with respect to the longitudinal axis of the tube.
Claim 6
Dependent Claim
20 words
An intraluminal graft according to claim 1 wherein the tube has a wall thickness of less than about 0.1 mm.
Claim 7
Dependent Claim
20 words
An intraluminal graft according to claim 2 wherein the tube has a wall thickness of less than about 0.1 mm.
Claim 8
Dependent Claim
20 words
An intraluminal graft according to claim 3 wherein the tube has a wall thickness of less than about 0.1 mm.
Claim 9
Dependent Claim
20 words
An intraluminal graft according to claim 4 wherein the tube has a wall thickness of less than about 0.1 mm.
Claim 10
Dependent Claim
15 words
An intraluminal graft according to claim 2 wherein the seamline is adhered by an adhesive.
Claim 11
Dependent Claim
14 words
An intraluminal graft according to claim 9 wherein the adhesive is fluorinated ethylene propylene.
Claim 12
Dependent Claim
18 words
An intraluminal graft according to claim 1 wherein the tube is provided with at least one reinforcing rib.
Claim 13
Dependent Claim
18 words
An intraluminal graft according to claim 2 wherein the tube is provided with at least one reinforcing rib.
Claim 14
Dependent Claim
18 words
An intraluminal graft according to claim 5 wherein the tube is provided with at least one reinforcing rib.
Claim 15
Dependent Claim
18 words
An intraluminal graft according to claim 6 wherein the tube is provided with at least one reinforcing rib.
Claim 16
Dependent Claim
16 words
An intraluminal graft according to claim 1 wherein the tube is provided with a reinforcing braid.
Claim 17
Dependent Claim
16 words
An intraluminal graft according to claim 2 wherein the tube is provided with a reinforcing braid.
Claim 18
Dependent Claim
16 words
An intraluminal graft according to claim 5 wherein the tube is provided with a reinforcing braid.
Claim 19
Dependent Claim
16 words
An intraluminal graft according to claim 6 wherein the tube is provided with a reinforcing braid.
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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) | 2001-02-16 | 2001-08-18 | 2002-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-16 | 2005-08-18 | 2006-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-16 | 2009-08-18 | 2010-02-17 | $7700.00 | Window Closed / Lapsed |