US5700287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic vascular graft with deflectably secured fibers
Assignee: W.L. Gore and Associates Inc
•
Filing: 1996-10-29
•
Granted: 1997-12-23
•
Expires: 2016-10-29
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. Two different types of fibers may also be used. 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 inventive 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
- 👤 Carey V. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:07
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/04; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L; A61L27/00; A61L27/50; A61L27/507
Claims Analysis
Total Claims: 70
Claim 1
Independent Claim
132 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is at least two different types of fibers and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other wherein said fibers are free to move with respect to each other within a length of the graft.
Claim 2
Dependent Claim
132 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is at least two different types of fibers and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other wherein said fibers are free to move with respect to each other within a length of the graft.
Claim 3
Dependent Claim
24 words
A prosthetic vascular graft according to claim 1 wherein the at least two different types of fibers are of at least two different materials.
Claim 4
Dependent Claim
20 words
A prosthetic vascular graft according to claim 2 wherein the at least two different materials are polyethylene terephthalate and polytetrafluoroethylene.
Claim 5
Dependent Claim
21 words
A prosthetic vascular graft according to claim 2 wherein the at least two different materials are fluorinated ethylene propylene and polytetrafluoroethylene.
Claim 6
Dependent Claim
26 words
A prosthetic vascular graft according to claim 1 wherein the at least two different types of fibers are of at least two different cross sectional shapes.
Claim 7
Dependent Claim
22 words
A prosthetic vascular graft according to claim 5 wherein the at least two different cross sectional shapes are substantially round and oblong.
Claim 8
Dependent Claim
37 words
A prosthetic vascular graft according to claim 6 wherein at least a portion of the base substrate at ambient temperature is capable of being stretched and rapidly recovering more than about 10 percent of its stretched length.
Claim 9
Dependent Claim
16 words
A prosthetic vascular graft according to claim 7 having an exterior covering of porous polytetrafluoroethylene film.
Claim 10
Dependent Claim
13 words
A prosthetic vascular graft according to claim 7 having a tubular exterior covering.
Claim 11
Dependent Claim
42 words
A prosthetic vascular graft according to claim 9 wherein the tubular exterior covering is a tube having a wall thickness and having at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 12
Dependent Claim
17 words
A prosthetic vascular graft according to claim 10 wherein the tube has been perforated by a laser.
Claim 13
Dependent Claim
18 words
A prosthetic vascular graft according to claim 10 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 14
Dependent Claim
18 words
A prosthetic vascular graft according to claim 11 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 15
Dependent Claim
18 words
A prosthetic vascular graft according to claim 9 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 16
Dependent Claim
16 words
A prosthetic vascular graft according to claim 6 having an exterior covering of porous polytetrafluoroethylene film.
Claim 17
Dependent Claim
13 words
A prosthetic vascular graft according to claim 6 having a tubular exterior covering.
Claim 18
Dependent Claim
42 words
A prosthetic vascular graft according to claim 16 wherein the tubular exterior covering is a tube having a wall thickness and having at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 19
Dependent Claim
17 words
A prosthetic vascular graft according to claim 17 wherein the tube has been perforated by a laser.
Claim 20
Dependent Claim
18 words
A prosthetic vascular graft according to claim 18 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 21
Dependent Claim
18 words
A prosthetic vascular graft according to claim 17 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 22
Dependent Claim
18 words
A prosthetic vascular graft according to claim 16 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 23
Dependent Claim
37 words
A prosthetic vascular graft according to claim 5 wherein at least a portion of the base substrate at ambient temperature is capable of being stretched and rapidly recovering more than about 10 percent of its stretched length.
Claim 24
Dependent Claim
16 words
A prosthetic vascular graft according to claim 22 having an exterior covering of porous polytetrafluoroethylene film.
Claim 25
Dependent Claim
13 words
A prosthetic vascular graft according to claim 22 having a tubular exterior covering.
Claim 26
Dependent Claim
42 words
A prosthetic vascular graft according to claim 24 wherein the tubular exterior covering is a tube having a wall thickness and having at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 27
Dependent Claim
17 words
A prosthetic vascular graft according to claim 25 wherein the tube has been perforated by a laser.
Claim 28
Dependent Claim
18 words
A prosthetic vascular graft according to claim 26 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 29
Dependent Claim
18 words
A prosthetic vascular graft according to claim 25 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 30
Dependent Claim
18 words
A prosthetic vascular graft according to claim 24 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 31
Dependent Claim
16 words
A prosthetic vascular graft according to claim 5 having an exterior covering of porous polytetrafluoroethylene film.
Claim 32
Dependent Claim
13 words
A prosthetic vascular graft according to claim 5 having a tubular exterior covering.
Claim 33
Dependent Claim
42 words
A prosthetic vascular graft according to claim 31 wherein the tubular exterior covering is a tube having a wall thickness and having at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 34
Dependent Claim
17 words
A prosthetic vascular graft according to claim 32 wherein the tube has been perforated by a laser.
Claim 35
Dependent Claim
18 words
A prosthetic vascular graft according to claim 33 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 36
Dependent Claim
18 words
A prosthetic vascular graft according to claim 32 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 37
Dependent Claim
18 words
A prosthetic vascular graft according to claim 31 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 38
Dependent Claim
48 words
A prosthetic vascular graft according to claim 1 wherein the at least two different types of fibers are first and second fibers of at least two different cross sectional dimensions wherein the first fiber has a dimension at least 1.5 times the same dimension of the second fiber.
Claim 39
Dependent Claim
37 words
A prosthetic vascular graft according to claim 1 wherein at least a portion of the base substrate at ambient temperature is capable of being stretched and rapidly recovering more than about 10 percent of its stretched length.
Claim 40
Dependent Claim
16 words
A prosthetic vascular graft according to claim 38 having an exterior covering of porous polytetrafluoroethylene film.
Claim 41
Dependent Claim
13 words
A prosthetic vascular graft according to claim 38 having a tubular exterior covering.
Claim 42
Dependent Claim
42 words
A prosthetic vascular graft according to claim 40 wherein the tubular exterior covering is a tube having a wall thickness and having at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 43
Dependent Claim
17 words
A prosthetic vascular graft according to claim 41 wherein the tube has been perforated by a laser.
Claim 44
Dependent Claim
18 words
A prosthetic vascular graft according to claim 42 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 45
Dependent Claim
18 words
A prosthetic vascular graft according to claim 41 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 46
Dependent Claim
18 words
A prosthetic vascular graft according to claim 40 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 47
Dependent Claim
16 words
A prosthetic vascular graft according to claim 1 having an exterior covering of porous polytetrafluoroethylene film.
Claim 48
Dependent Claim
13 words
A prosthetic vascular graft according to claim 1 having a tubular exterior covering.
Claim 49
Dependent Claim
42 words
A prosthetic vascular graft according to claim 47 wherein the tubular exterior covering is a tube having a wall thickness and having at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 50
Dependent Claim
17 words
A prosthetic vascular graft according to claim 48 wherein the tube has been perforated by a laser.
Claim 51
Dependent Claim
18 words
A prosthetic vascular graft according to claim 49 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 52
Dependent Claim
18 words
A prosthetic vascular graft according to claim 48 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 53
Dependent Claim
18 words
A prosthetic vascular graft according to claim 47 wherein the tubular exterior covering comprises a porous polytetrafluoroethylene tube.
Claim 54
Dependent Claim
40 words
A prosthetic vascular graft according to claim 1 wherein the two different types of fibers are a first fiber comprising porous polytetrafluoroethylene film having an oblong cross section and a second fiber comprising porous polytetrafluoroethylene of substantially round cross section.
Claim 55
Dependent Claim
13 words
A prosthetic vascular graft according to claim 53 having a tubular exterior covering.
Claim 56
Dependent Claim
18 words
A prosthetic vascular graft according to claim 54 wherein the tubular exterior covering is a porous polytetrafluoroethylene tube.
Claim 57
Dependent Claim
39 words
A prosthetic vascular graft according to claim 55 wherein the porous polytetrafluoroethylene tube has a wall thickness and has at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 58
Dependent Claim
37 words
A prosthetic vascular graft according to claim 53 wherein at least a portion of the base substrate at ambient temperature is capable of being stretched and rapidly recovering more than about 10 percent of its stretched length.
Claim 59
Dependent Claim
13 words
A prosthetic vascular graft according to claim 57 having a tubular exterior covering.
Claim 60
Dependent Claim
16 words
A prosthetic vascular graft according to claim 58 wherein the tube is a porous polytetrafluoroethylene tube.
Claim 61
Dependent Claim
39 words
A prosthetic vascular graft according to claim 59 wherein the porous polytetrafluoroethylene tube has a wall thickness and has at least two macroscopic perforations through the wall thickness, said macroscopic perforations having a diameter of at least 0.2 mm.
Claim 62
Dependent Claim
130 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is comprised of a bioabsorbable material and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other wherein said fibers are free to move with respect to each other within a length of the graft.
Claim 63
Dependent Claim
130 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is comprised of a bioabsorbable material and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other wherein said fibers are free to move with respect to each other within a length of the graft.
Claim 64
Dependent Claim
15 words
A prosthetic vascular graft according to claim 61 wherein the bioabsorbable material is bioabsorbable fibers.
Claim 65
Dependent Claim
15 words
A prosthetic vascular graft according to claim 61 wherein the bioabsorbable material is bioabsorbable film.
Claim 66
Dependent Claim
28 words
A prosthetic vascular graft according to claim 61 wherein the bioabsorbable material comprises discrete pieces of bioabsorbable material that are deflectably secured by an exterior wrapping of film.
Claim 67
Dependent Claim
145 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is secured to the base substrate at least one location by thermally bonding the deflectably secured material to the base substrate and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other whereins aid fibers are free to move with respect to each other within a length of the graft.
Claim 68
Dependent Claim
145 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is secured to the base substrate at least one location by thermally bonding the deflectably secured material to the base substrate and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other whereins aid fibers are free to move with respect to each other within a length of the graft.
Claim 69
Dependent Claim
159 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is at least two different types of fibers, wherein said deflectably secured material is secured to the base substrate at at least one location by thermally bonding the deflectably secured material to the base substrate and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other wherein said fibers are free to move with respect to each other within a length of the graft.
Claim 70
Dependent Claim
159 words
A prosthetic vascular graft comprising a base substrate of biocompatible material having an ablumenal surface wherein a substantial portion of the ablumenal surface is provided with an outer covering of deflectably secured material that is capable of being deflected with respect to the ablumenal surface of the base substrate, wherein said deflectably secured material is at least two different types of fibers, wherein said deflectably secured material is secured to the base substrate at at least one location by thermally bonding the deflectably secured material to the base substrate and, wherein the deflectably secured material is secured to the base substrate in such a manner that a substantial portion of the deflectably secured material is not directly secured to the base substrate and a substantial portion of adjacent surfaces of the deflectably secured material are not directly secured to each other wherein said fibers are free to move with respect to each other within a length of the 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) | 2000-12-22 | 2001-06-23 | 2001-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-22 | 2005-06-23 | 2005-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-22 | 2009-06-23 | 2009-12-23 | $7700.00 | Window Closed / Lapsed |