US5910168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic vascular graft
Assignee: W.L. Gore and Associates Inc
•
Filing: 1998-02-05
•
Granted: 1999-06-08
•
Expires: 2018-02-05
Abstract
Abstract A vascular graft in the form of a tube or flat sheet of biocompatible material having an outer covering of deflectably secured material such as porous film, fibers, discrete pieces of material, or combinations thereof. The vascular graft may be of tubular form for replacing or bypassing entire segments of veins or arteries or alternatively may be in the form of a flat sheet useful for repairing portions of the circumference of veins or arteries. The tube or flat sheet of biocompatible material and the outer covering of deflectably secured material are preferably of porous polytetrafluoroethylene. The vascular graft is useful for dialysis access in that it offers a reduction in blood leakage when the vascular graft is punctured by a dialysis needle and the needle is subsequently removed. It is also useful for reducing suture hole bleeding resulting from holes created through the graft by penetration of the graft with a suture needle.
Inventors
- 👤 David J. Myers
- 👤 James D. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:29
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/50; A61L27/507; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
116 words
A vascular graft comprising: a) a biocompatible base substrate having a lumenal and ablumenal surface; and b) a biocompatible material covering a substantial portion of the ablumenal surface of said substrate, said biocompatible material being secured to said ablumenal surface at at least one point and being deflectable with respect to said ablumenal surface; wherein said biocompatible material covering said ablumenal surface comprises at least one layer of a porous film having a surface, wherein said at least one layer of film is arranged such that various portions of the surface may be adjacent to each other and wherein a substantial portion of said various adjacent surfaces are free to move with respect to each other.
Claim 2
Dependent Claim
116 words
A vascular graft comprising: a) a biocompatible base substrate having a lumenal and ablumenal surface; and b) a biocompatible material covering a substantial portion of the ablumenal surface of said substrate, said biocompatible material being secured to said ablumenal surface at at least one point and being deflectable with respect to said ablumenal surface; wherein said biocompatible material covering said ablumenal surface comprises at least one layer of a porous film having a surface, wherein said at least one layer of film is arranged such that various portions of the surface may be adjacent to each other and wherein a substantial portion of said various adjacent surfaces are free to move with respect to each other.
Claim 3
Dependent Claim
24 words
The vascular graft of claim 1 in which said biocompatible material covering said ablumenal surface comprises at least five layers of a porous film.
Claim 4
Dependent Claim
24 words
The vascular graft of claim 2 in which said biocompatible material covering said ablumenal surface comprises at least forty layers of a porous film.
Claim 5
Dependent Claim
15 words
The vascular graft of claim 1 in which said porous film comprises porous polytetrafluoroethylene film.
Claim 6
Dependent Claim
18 words
The vascular graft of claim 1 in which said base substrate is in the form of a tube.
Claim 7
Dependent Claim
28 words
The vascular graft of claim 5 in which said at least one layer of porous film comprises a tape helically wrapped about the ablumenal surface of the tube.
Claim 8
Dependent Claim
14 words
The vascular graft of claim 6 wherein said tape is a porous polytetrafluoroethylene film.
Claim 9
Dependent Claim
19 words
The vascular graft of claim 1 in which said base substrate is in the form of a flat sheet.
Claim 10
Dependent Claim
24 words
The vascular graft of claim 1 in which said material is secured to said ablumenal surface at at least one point by adhesive means.
Claim 11
Dependent Claim
26 words
The vascular graft of claim 9 in which said adhesive means comprises an adhesive selected from the group consisting of silicone, fluorinated ethylene propylene and perfluoroalkoxy.
Claim 12
Dependent Claim
24 words
The vascular graft of claim 1 in which said material is secured to said ablumenal surface at at least one point by heat bonding.
References Cited (Backward Citations)
US4187390A
Cited
US3953566A
Cited
US4878908A
Cited
US4084266A
Cited
US4130904A
Cited
US4323525A
Cited
US4850999A
Cited
US4416028A
Cited
US4475972A
Cited
US4743250A
Cited
US4619641A
Cited
US4632842A
Cited
US4652263A
Cited
US4738740A
Cited
US5061276A
Cited
US5026513A
Cited
US4877661A
Cited
US5024671A
Cited
US4969896A
Cited
US5100422A
Cited
US5116360A
Cited
US5192310A
Cited
US5246452A
Cited
US5269810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-06-07 | 2002-12-07 | 2003-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-07 | 2006-12-07 | 2007-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-07 | 2010-12-07 | 2011-06-08 | $7700.00 | Window Closed / Lapsed |