US3317924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular prostheses
Assignee: Individual
•
Filing: 1963-05-27
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Granted: 1967-05-09
•
Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Veen Harry H Le
- 👤 Leonard D Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:08
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/14; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
A METHOD OF FABRICATING A VASCULAR PROSTHETIC ARTICLE OF PRE-DETERMINED POROSITY COMPRISING WINDING A NONABSORBABLE FIBER FILAMENT SUITABLE FOR VASCULAR PROSTHETIC USE ONTO A FORM IN A FIRST DIRECTION TO PROVIDE A FIRST HELICALLY WOUND LAYER OF FILAMENT ON SAID FORM, WINDING SAID FILAMENT IN A SECOND OPPOSITE DIRECTION TO PROVIDE A SECOND HELICAL LAYER OF FILAMENT DISPOSED OVER SAID FIRST LAYER TO THEREBY FORM A PLURALITY OF POINTS OF INTERSECTION OF SAID FILAMENT AND TO INCREASE THE THICKNESS OF THE WALL OF THE HOLLOW ARTICLE SO FORMED WHILE AT THE SAME TIME REDUCING THE POROSITY OF SAID WALL, CONTINUING SAID WINDING BY REPEATING WINDING IN ALTERNATING OPPOSITE DIRECTIONS A PRE-DETERMINED NUMBER OF TIMES TO PROVIDE AN ARTICLE OF PRE-DETERMINED WALL POROSITY WHICH POROSITY RENDERS SAID ARTICLE SUITABLE FOR PROSTHETIC USE, AND FUSING THE FIBER FILAMENTS TOGETHER AT SAID POINTS OF INTERSECTION TO PROVIDE AN INTEGRAL VASCULAR PROSTHETIC ARTICLE.
Claim 2
Independent Claim
149 words
A METHOD OF FABRICATING A VASCULAR PROSTHETIC ARTICLE OF PRE-DETERMINED POROSITY COMPRISING WINDING A NONABSORBABLE FIBER FILAMENT SUITABLE FOR VASCULAR PROSTHETIC USE ONTO A FORM IN A FIRST DIRECTION TO PROVIDE A FIRST HELICALLY WOUND LAYER OF FILAMENT ON SAID FORM, WINDING SAID FILAMENT IN A SECOND OPPOSITE DIRECTION TO PROVIDE A SECOND HELICAL LAYER OF FILAMENT DISPOSED OVER SAID FIRST LAYER TO THEREBY FORM A PLURALITY OF POINTS OF INTERSECTION OF SAID FILAMENT AND TO INCREASE THE THICKNESS OF THE WALL OF THE HOLLOW ARTICLE SO FORMED WHILE AT THE SAME TIME REDUCING THE POROSITY OF SAID WALL, CONTINUING SAID WINDING BY REPEATING WINDING IN ALTERNATING OPPOSITE DIRECTIONS A PRE-DETERMINED NUMBER OF TIMES TO PROVIDE AN ARTICLE OF PRE-DETERMINED WALL POROSITY WHICH POROSITY RENDERS SAID ARTICLE SUITABLE FOR PROSTHETIC USE, AND FUSING THE FIBER FILAMENTS TOGETHER AT SAID POINTS OF INTERSECTION TO PROVIDE AN INTEGRAL VASCULAR PROSTHETIC ARTICLE.
Claim 3
Dependent Claim
97 words
A VASCULAR PROSTHETIC COMPRISING A HOLLOW TUBULAR ARTICLE HAVING A WALL COMPRISING A PLURALITY OF LAYERS OF A FIBER FILAMENT SUITABLE FOR VASCULAR PROSTHETIC USE AND WOUND IN THE FORM OF A HELIX, EACH HELICAL LAYER BEING OF OPPOSITE HAND SUCH THAT A PLURALITY OF POINTS OF INTERSECTION OF FIBERS IS PRESENT BETWEEN EACH HELICAL LAYER, SAID ARTICLE HAVING A PRE-DETERMINED POROSITY SUITABLE FOR VASCULAR PROSTHETIC USE AND BEING ESTABLISHED BY THE NUMBER OF HELICAL LAYERS CONSTITUTING SAID WALL, AND THE FIBER OF EACH LAYER BEING FUSED TO EACH ADJACENT LAYER ONLY AT SAID POINTS OF INTERSECTION.
Claim 4
Dependent Claim
97 words
A VASCULAR PROSTHETIC COMPRISING A HOLLOW TUBULAR ARTICLE HAVING A WALL COMPRISING A PLURALITY OF LAYERS OF A FIBER FILAMENT SUITABLE FOR VASCULAR PROSTHETIC USE AND WOUND IN THE FORM OF A HELIX, EACH HELICAL LAYER BEING OF OPPOSITE HAND SUCH THAT A PLURALITY OF POINTS OF INTERSECTION OF FIBERS IS PRESENT BETWEEN EACH HELICAL LAYER, SAID ARTICLE HAVING A PRE-DETERMINED POROSITY SUITABLE FOR VASCULAR PROSTHETIC USE AND BEING ESTABLISHED BY THE NUMBER OF HELICAL LAYERS CONSTITUTING SAID WALL, AND THE FIBER OF EACH LAYER BEING FUSED TO EACH ADJACENT LAYER ONLY AT SAID POINTS OF INTERSECTION.
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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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |