Patent US3919724A successfully refreshed from Google Patents.
US5628786A
Expired / Lapsed
US
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Radially expandable vascular graft with resistance to longitudinal compression and method of making same
Assignee: Bard Peripheral Vascular Inc
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Filing: 1995-05-12
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Granted: 1997-05-13
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Expires: 2015-05-12
Abstract
Abstract A microporous polytetrafluoroethylene ("PTFE") endovascular graft which has a reinforcing structure integrally bound to the graft which permits radial expansion of the graft and stabilizes the graft against longitudinal compression upon application of an axial force thereto and against axial foreshortening upon radial expansion of the graft. The graft is particularly useful as a covering for an endovascular stent.
Inventors
- 👤 Christopher E. Banas
- 👤 Scott Randall
- 👤 Tarun J. Edwin
- 👤 Fariba Hurry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
B; B32; B32B; B32B1/00; B32B1/08; A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61L; A61L27/00; A61L27/14; A61L27/16; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B27/322; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B32B7/00; B32B7/04; B32B7/12; A61F2002/072; A61F2002/075; A61F2250/00; A61F2250/0014; A61F2250/0018; B32B2305/00; B32B2305/02; B32B2305/026; B32B2327/00; B32B2327/12; B32B2327/18; B32B2597/00; Y; Y10; Y10S; Y10S623/00; Y10S623/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
95 words
A polytetrafluoroethylene graft, comprising: a tubular graft member formed of expanded polytetrafluoroethylene having a plurality of nodes and fibrils interconnecting the nodes, and forming a microporous material matrix; and structural support means for imparting resistance to longitudinal compression or axial shrinkage of the tubular graft member 12. reinforcing the microporous material matrix along a longitudinal axis of the tubular graft member, the structural support means being integrated into at least a portion of the microporous material matrix of the tubular graft member and extending axially along a substantial longitudinal section of the tubular graft member.
Claim 2
Dependent Claim
95 words
A polytetrafluoroethylene graft, comprising: a tubular graft member formed of expanded polytetrafluoroethylene having a plurality of nodes and fibrils interconnecting the nodes, and forming a microporous material matrix; and structural support means for imparting resistance to longitudinal compression or axial shrinkage of the tubular graft member 12. reinforcing the microporous material matrix along a longitudinal axis of the tubular graft member, the structural support means being integrated into at least a portion of the microporous material matrix of the tubular graft member and extending axially along a substantial longitudinal section of the tubular graft member.
Claim 3
Dependent Claim
35 words
The graft of claim 1, wherein said structural support means further comprises a rib member bonded to at least one of an outer wall surface and an inner wall surface of the tubular graft member.
Claim 4
Dependent Claim
45 words
The graft of claim 2, wherein said rib member further comprises a biocompatible plastic selected from the group consisting of polyamides, polyimides, polyesters, polypropylenes, polyethylenes, polyfluoroethylenes, polyvinylpyrolidones, fluorinated polyolefins, fluorinated ethylene/propylene copolymers, tetrafluorethylene/hexafluropropylene copolymer, perfluoroalkoxy fluorocarbons, tetrafluoroethyl/perfluoro propyl vinyl ether copolymer, ethylene/tetrafluoroethylene copolymers, and polyvinylpyrrolidone.
Claim 5
Dependent Claim
47 words
The graft of claim 1, wherein said structural support means further comprises an aqueous dispersion of a biocompatible polymer in a coating medium, said aqueous dispersion being applied to at least one of an inner wall surface and an outer wall surface of said tubular graft member.
Claim 6
Dependent Claim
21 words
The graft of claim 1, wherein said structural support means further comprises a metal member co-extruded with said tubular graft member.
Claim 7
Dependent Claim
32 words
The graft of claim 1, wherein said structural support means further comprises a metal member co-extruded with a polytetrafluoroethylene beading member, said polytetrafluoroethylene beading member being sintered onto said tubular graft member.
Claim 8
Dependent Claim
48 words
The graft of claim 1, wherein said structural support means provides resistance to at least one of longitudinal compression and axial shrinkage of the tubular graft member, said compression of said graft being less than or equal to about 27 percent of the uncompressed length of said graft.
Claim 9
Dependent Claim
24 words
The graft of claim 1, wherein said structural support means further comprises a region integral within the wall thickness of said tubular graft member.
Claim 10
Dependent Claim
104 words
An expanded polytetrafluoroethylene endoluminal graff, comprising: a radially expandable tubular expanded polytetrafluoroethylene graft member characterized by a microporous material microstructure of nodes interconnected by fibrils and having a first unexpanded diameter and a second radially expanded diameter greater than the first unexpanded diameter; and a structural support member joined to the graft member, oriented substantially parallel to and extending substantially along an entire longitudinal axis of the tubular graft member, thereby providing longitudinal support to the graft member to restrict longitudinal foreshortening of the graft member during radial expansion of the graft member from the first unexpanded diameter to the second radially expanded diameter.
Claim 11
Dependent Claim
104 words
An expanded polytetrafluoroethylene endoluminal graff, comprising: a radially expandable tubular expanded polytetrafluoroethylene graft member characterized by a microporous material microstructure of nodes interconnected by fibrils and having a first unexpanded diameter and a second radially expanded diameter greater than the first unexpanded diameter; and a structural support member joined to the graft member, oriented substantially parallel to and extending substantially along an entire longitudinal axis of the tubular graft member, thereby providing longitudinal support to the graft member to restrict longitudinal foreshortening of the graft member during radial expansion of the graft member from the first unexpanded diameter to the second radially expanded diameter.
Claim 12
Dependent Claim
29 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 9, further comprising a radially expandable stent member joined in intimate contact with the radially expandable tubular expanded polytetrafluoroethylene graft member.
Claim 13
Dependent Claim
30 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 10, wherein the radially expandable stent member is joined to a luminal surface of the radially expandable tubular expanded polytetrafluoroethylene graft member.
Claim 14
Dependent Claim
30 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 10, wherein the radially expandable stent member is joined to an abluminal surface of the radially expandable tubular expanded polytetrafluoroethylene graft member.
Claim 15
Dependent Claim
39 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 9, wherein the structural support member further comprises a rib member bonded to at least one of an outer wall surface and an inner wall surface of the tubular graft member.
Claim 16
Dependent Claim
49 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 13, wherein the rib member further comprises a biocompatible plastic selected from the group consisting of polyamides, polyimides, polyesters, polypropylenes, polyethylenes, polyfluoroethylenes, polyvinylpyrolidones, fluorinated polyolefins, fluorinated ethylene/propylene copolymers, tetrafluoroethylene/hexafluoropropylene copolymer, perfluoroalkoxy fluorocarbons, tetrafluoroethyl/perfluoro propyl vinyl ether copolymer, ethylene/tetrafluoroethylene copolymers, and polyvinylpyrrolidone.
Claim 17
Dependent Claim
51 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 9, wherein the structural support member further comprises an aqueous dispersion of a biocompatible polymer in a coating medium, said aqueous dispersion being applied to at least one of an inner wall surface and an outer wall surface of said tubular graft member.
Claim 18
Dependent Claim
25 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 9, wherein the structural support member further comprises a metal member co-extruded with said tubular graft member.
Claim 19
Dependent Claim
36 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 9, wherein the structural support member further comprises a metal member co-extruded with a polytetrafluoroethylene beading member, said polytetrafluoroethylene beading member being sintered onto said tubular graft member.
Claim 20
Dependent Claim
52 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 9, wherein the structural support member provides resistance to at least one of longitudinal compression and axial shrinkage of the tubular graft member, said compression of said graft being less than or equal to about 27 percent of the non-compressed length of said graff.
Claim 21
Dependent Claim
28 words
The expanded polytetrafluoroethylene endoluminal graft according to claim 9, wherein the structural support member further comprises a region integral within the wall thickness of said tubular graft member.
References Cited (Backward Citations)
US3400719A
Cited
US4208745A
Cited
US4229838A
Cited
US4304010A
Cited
US4306318A
Cited
US4447570A
Cited
US4550447A
Cited
US4647416A
Cited
US4728328A
Cited
US4834747A
Cited
US4902290A
Cited
US4749585A
Cited
US4776853A
Cited
US5061276A
Cited
US4892544A
Cited
US5094806A
Cited
US5118524A
Cited
US5282847A
Cited
US5330782A
Cited
US5383927A
Cited
US5413598A
Cited
US5476506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-05-12 | 2000-11-11 | 2001-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-12 | 2004-11-11 | 2005-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-12 | 2008-11-11 | 2009-05-13 | $7700.00 | Window Closed / Lapsed |