Patent US3488757A successfully refreshed from Google Patents.
Patent US5609624A successfully refreshed from Google Patents.
US5609624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced vascular graft and method of making same
Assignee: Bard Peripheral Vascular Inc
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Filing: 1993-10-08
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Granted: 1997-03-11
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Expires: 2013-10-08
Abstract
Abstract A microporous reinforced expanded PTFE vascular graft in which the reinforcing structure is substantially identical in porosity to the body of the graft. The graft is characterized by a microporous expanded PTFE tubular graft wall and integral and monolithic expanded PTFE rib structures with a porosity or density substantially identical to that of the tubular graft wall.
Inventors
- 👤 Robert W. Kalis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:19
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; B; B29; B29C; B29C48/00; B29C48/022; B29C48/03; B29C48/09; B29C48/12; B29C48/001; B29C48/0012; B29C48/13; B29C48/15; B29C48/25; B29C48/36; B29C48/475; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
86 words
A flexible, monolithic, polymer tube, comprising: a microporous expanded polytetrafluoroethylene tubular member having a microstructure of nodes interconnected by fibrils and having an inner wall diameter and an outer wall diameter, and at least one microporous expanded polytetrafluoroethylene external rib member projecting outwardly from the outer wall diameter, the at least one expanded polytetrafluoroethylene external rib member being integral with the microporous expanded polytetrafluoroethylene tubular member, said microporous expanded polytetrafluoroethylene tubular member and said at least one expanded polytetrafluoroethylene external rib member having substantially equal porosities.
Claim 2
Dependent Claim
86 words
A flexible, monolithic, polymer tube, comprising: a microporous expanded polytetrafluoroethylene tubular member having a microstructure of nodes interconnected by fibrils and having an inner wall diameter and an outer wall diameter, and at least one microporous expanded polytetrafluoroethylene external rib member projecting outwardly from the outer wall diameter, the at least one expanded polytetrafluoroethylene external rib member being integral with the microporous expanded polytetrafluoroethylene tubular member, said microporous expanded polytetrafluoroethylene tubular member and said at least one expanded polytetrafluoroethylene external rib member having substantially equal porosities.
Claim 3
Dependent Claim
22 words
The flexible, monolithic, polymer tube according to claim 1, wherein the at least one external rib member has a semicircular cross-sectional shape.
Claim 4
Dependent Claim
23 words
The flexible, monolithic, polymer tube according to claim 1, wherein the at least one external rib member has a generally triangular cross-sectional shape.
Claim 5
Dependent Claim
23 words
The flexible, monolithic, polymer tube according to claim 1, wherein the at least one external rib member has a generally quadrilateral cross-sectional shape.
Claim 6
Dependent Claim
23 words
The flexible, monolithic, polymer tube according to claim 1, wherein the at least one external rib member has a generally circular cross-sectional shape.
Claim 7
Dependent Claim
29 words
The flexible, monolithic, polymer tube according to claim 1, wherein the microporous tubular member and the at least one external rib member each have an average porosity between 30-85%.
Claim 8
Dependent Claim
36 words
The flexible, monolithic, polymer tube according to claim 1, wherein the at least one external rib member is axially oriented along at least a longitudinal portion of the outer wall diameter of the microporous tubular member.
Claim 9
Dependent Claim
29 words
The flexible, monolithic, polymer tube according to claim 1, wherein the at least one external rib is helically disposed along at least a longitudinal portion of the tube wall.
Claim 10
Dependent Claim
82 words
A tubular vascular graft, comprising: a microporous tubular member having an inner wall surface and an outer wall surface and made of a biocompatible implantable microporous material, and at least one rib member being an integral part of, monolithic with and projecting outwardly along a longitudinal axis of the outer wall surface of the microporous tubular member, whereby microporous tubular member and the at least one rib member are made of the same biocompatible implantable microporous material and have substantially equal porosities.
Claim 11
Dependent Claim
82 words
A tubular vascular graft, comprising: a microporous tubular member having an inner wall surface and an outer wall surface and made of a biocompatible implantable microporous material, and at least one rib member being an integral part of, monolithic with and projecting outwardly along a longitudinal axis of the outer wall surface of the microporous tubular member, whereby microporous tubular member and the at least one rib member are made of the same biocompatible implantable microporous material and have substantially equal porosities.
Claim 12
Dependent Claim
17 words
The tubular vascular graft according to claim 9, wherein the microporous tubular member further comprises expanded PTFE.
Claim 13
Dependent Claim
19 words
The tubular vascular graft according to claim 10, wherein the at least one rib member further comprises expanded PTFE.
Claim 14
Dependent Claim
20 words
The tubular vascular graft according to claim 11, wherein the at least one rib member has a semicircular cross-sectional shape.
Claim 15
Dependent Claim
21 words
The tubular vascular graft according to claim 11, wherein the at least one rib member has a generally triangular cross-sectional shape.
Claim 16
Dependent Claim
21 words
The tubular vascular graft according to claim 11, wherein the at least one rib member has a generally quadrilateral cross-sectional shape.
Claim 17
Dependent Claim
21 words
The tubular vascular graft according to claim 11, wherein the at least one rib member has a generally circular cross-sectional shape.
Claim 18
Dependent Claim
27 words
The tubular vascular graft according to claim 11, wherein the microporous tubular member and the at least one rib member each have an average porosity between 30-85%.
Claim 19
Dependent Claim
28 words
The tubular vascular graft according to claim 9, wherein the at least one rib member is axially oriented along at least a longitudinal portion of the tube wall.
Claim 20
Dependent Claim
28 words
The tubular vascular graft according to claim 9, wherein the at least one external rib is helically disposed along at least a longitudinal portion of the tube wall.
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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) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-10 | 2008-09-09 | 2009-03-11 | $7700.00 | Window Closed / Lapsed |