Patent US5024671A successfully refreshed from Google Patents.
US5024671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microporous vascular graft
Assignee: Edwards Lifesciences Corp
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Filing: 1988-09-19
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Granted: 1991-06-18
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Expires: 2008-09-19
Abstract
Abstract A vascular graft at least partially formed from porous hollow fibers, with at least some of the porous hollow fibers being located adjacent an inner surface of the vascular graft. The vascular grafts of the invention have a relatively small pore size for promoting tissue growth while inhibiting bleeding during the healing process. The porous hollow fibers used to form the vascular grafts of the invention further provide a storage situs for temporarily holding a drug or other material for delivery into the blood stream during the healing process. This storage capability may also be used for holding an inert gas while providing the graft with greater resilency and cushioning characteristics than achievable with presently available vascular grafts.
Inventors
- 👤 Roger Tu
- 👤 David Chen
- 👤 Wilfred F. Mathewson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:55
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/50; A61L27/56; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L27/54; A61L27/58; A61F2250/00; A61F2250/0058; A61F2250/0067; A61L2300/00; A61L2300/60; A61L2300/606
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
44 words
A vascular graft comprised of a tubular body formed from a porous, biocompatible material and having an inner surface defining an open passageway through which a fluid can pass, said tubular body including a layer of porous hollow fibers positioned along said inner surface.
Claim 2
Dependent Claim
44 words
A vascular graft comprised of a tubular body formed from a porous, biocompatible material and having an inner surface defining an open passageway through which a fluid can pass, said tubular body including a layer of porous hollow fibers positioned along said inner surface.
Claim 3
Dependent Claim
56 words
An implantable vascular graft comprised of a tubular body formed from a porous, biocompatible material and having an inner surface defining an open passageway through which a fluid can pass, said tubular body including porous hollow fibers with at least a portion of said porous hollow fibers forming at least a portion of said inner surface.
Claim 4
Dependent Claim
56 words
An implantable vascular graft comprised of a tubular body formed from a porous, biocompatible material and having an inner surface defining an open passageway through which a fluid can pass, said tubular body including porous hollow fibers with at least a portion of said porous hollow fibers forming at least a portion of said inner surface.
Claim 5
Dependent Claim
27 words
The implantable vascular graft of claim 2 wherein said porous hollow fibers form said inner layer of said vascular graft, which inner layer defines said open passageway.
Claim 6
Dependent Claim
19 words
The implantable vascular graft of claim 3 wherein said vascular graft further includes an outer layer formed from fibers.
Claim 7
Dependent Claim
19 words
The implantable vascular graft of claim 2 wherein said vascular graft is comprised essentially of all porous hollow fibers.
Claim 8
Dependent Claim
16 words
The implantable vascular graft of claim 4 wherein said fibers forming said outer layer are solid.
Claim 9
Dependent Claim
18 words
The implantable vascular graft of claim 4 wherein said fibers forming said outer layer are porous and hollow.
Claim 10
Dependent Claim
25 words
The implantable vascular graft of claim 4 wherein said porous hollow fibers forming said inner layer are arranged circumferentially about an axis of said graft.
Claim 11
Dependent Claim
26 words
The implantable vascular graft of claim 4 wherein said porous hollow fibers forming said inner layer are arranged substantially parallel to an axis of said graft.
Claim 12
Dependent Claim
19 words
The implantable vascular graft of claim 8 wherein said vascular graft is comprised essentially of all porous hollow fibers.
Claim 13
Dependent Claim
16 words
The implantable vascular graft of claim 8 wherein said fibers forming said outer layer are solid.
Claim 14
Dependent Claim
18 words
The implantable vascular graft of claim 8 wherein said fibers forming said outer layer are porous hollow fibers.
Claim 15
Dependent Claim
19 words
The implantable vascular graft of claim 9 wherein said vascular graft is comprised essentially of all porous hollow fibers.
Claim 16
Dependent Claim
16 words
The implantable vascular graft of claim 9 wherein said fibers forming said outer layer are solid.
Claim 17
Dependent Claim
18 words
The implantable vascular graft of claim 9 wherein said fibers forming said outer layer are porous hollow fibers.
Claim 18
Dependent Claim
21 words
The vascular graft of claim 10 wherein at least some of said porous hollow fibers are coated with a biodegradable polymer.
Claim 19
Dependent Claim
21 words
The vascular graft of claim 11 wherein at least some of said porous hollow fibers are coated with a biodegradable polymer.
Claim 20
Dependent Claim
21 words
The vascular graft of claim 12 wherein at least some of said porous hollow fibers are coated with a biodegradable polymer.
Claim 21
Dependent Claim
25 words
The vascular graft of claim 8 wherein at least some of said porous hollow fibers forming said vascular graft are filled with a drug composition.
Claim 22
Dependent Claim
25 words
The vascular graft of claim 9 wherein at least some of said porous hollow fibers forming said vascular graft are filled with a drug composition.
Claim 23
Dependent Claim
25 words
The vascular graft of claim 10 wherein at least some of said porous hollow fibers forming said vascular graft are filled with a drug composition.
Claim 24
Dependent Claim
25 words
The vascular graft of claim 11 wherein at least some of said porous hollow fibers forming said vascular graft are filled with a drug composition.
Claim 25
Dependent Claim
25 words
The vascular graft of claim 16 wherein at least some of said porous hollow fibers forming said vascular graft are filled with a drug composition.
Claim 26
Dependent Claim
25 words
The vascular graft of claim 17 wherein at least some of said porous hollow fibers forming said vascular graft are filled with a drug composition.
Claim 27
Dependent Claim
21 words
The vascular graft of claim 8 wherein at least some of said porous hollow fibers are filled with an inert gas.
Claim 28
Dependent Claim
21 words
The vascular graft of claim 9 wherein at least some of said porous hollow fibers are filled with an inert gas.
Claim 29
Dependent Claim
21 words
The vascular graft of claim 10 wherein at least some of said porous hollow fibers are filled with an inert gas.
Claim 30
Dependent Claim
21 words
The vascular graft of claim 11 wherein at least some of said porous hollow fibers are filled with an inert gas.
Claim 31
Dependent Claim
21 words
The vascular graft of claim 16 wherein at least some of said porous hollow fibers are filled with an inert gas.
Claim 32
Dependent Claim
21 words
The vascular graft of claim 17 wherein at least some of said porous hollow fibers are filled with an inert gas.
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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) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-17 | 2002-12-17 | 2003-06-18 | $7700.00 | Window Closed / Lapsed |