US4878908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrillar product
Assignee: Imperial Chemical Industries Ltd
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Filing: 1988-06-01
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Granted: 1989-11-07
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Expires: 2008-06-01
Abstract
Abstract The disclosure relates to a prosthetic device and method for repairing a damaged blood vessel comprising a mat of fibers adjacent the bore of a tube having a disposition substantially parallel to the inner surface of the tube, the mat having a thickness of 0.5 mm to 5 mm.
Inventors
- 👤 Graham E. Martin
- 👤 Ian D. Cockshott
- 👤 Francis J. T. Fildes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:56
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/24; A61L15/42; A61L15/425; A61L27/00; A61L27/14; A61L27/18; A61L27/50; A61L27/54; B05; B05B; B05B5/00; B05B5/025; B05B5/0255; B05B5/043; B32B3/00; B32B3/02; B32B3/04; B32B7/00; B32B7/04; B32B7/12; D; D01; D01D; D01D5/00; D01D5/0007; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; D04H1/70; D04H1/72; D04H1/728; D04H1/76; D04H5/00; D04H5/02; A61L2300/00; A61L2300/10; A61L2300/108; A61L2300/20; A61L2300/252; A61L2300/254; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0292; B32B2535/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
A prosthetic device comprising a tube of vascular diameter said tube comprising an electrostatically spun mat of fibres of diameter 0.1 to 25 microns of a biologically acceptable polymeric material which is selected from the group consisting of polyurethane, polyamide or polyacrylonitrile, and fibres adjacent the bore of the tube having a disposition substantially parallel to the inner surface of the tube, said mat having a thickness of 0.5 mm to 5 mm.
Claim 2
Dependent Claim
73 words
A prosthetic device comprising a tube of vascular diameter said tube comprising an electrostatically spun mat of fibres of diameter 0.1 to 25 microns of a biologically acceptable polymeric material which is selected from the group consisting of polyurethane, polyamide or polyacrylonitrile, and fibres adjacent the bore of the tube having a disposition substantially parallel to the inner surface of the tube, said mat having a thickness of 0.5 mm to 5 mm.
Claim 3
Dependent Claim
20 words
A device according to claim 1 in which the fibres of the mat are of diameter 0.5 to 10 micron.
Claim 4
Dependent Claim
13 words
A device according to claim 1 in which the mat comprises non-woven fibres.
Claim 5
Dependent Claim
21 words
A device according to claim 1 in which the fibres of the mat are bonded one with another where they contact.
Claim 6
Dependent Claim
14 words
A device according to claim 1 the wall of which comprises a reinforcing component.
Claim 7
Dependent Claim
21 words
A device as in claim 5 wherein the thickness of the reinforcing component is less than the thickness of the mat.
Claim 8
Dependent Claim
14 words
A device according to claim 5 in which the reinforcement comprises a helical fibre.
Claim 9
Dependent Claim
18 words
A device as in claim 1 in which the tube is of internal diameter up to 3 centimeters.
Claim 10
Independent Claim
86 words
A method of repairing a damaged blood vessel which comprises replacing at least a part of the damaged blood vessel with a prosthetic device comprising an electrostatically spun mat of fibres of diameter 0.1 to 25 microns of a biologically acceptable polymeric material which is selected from the group consisting of polyurethane, polyamide or polyacrylonitrile, and fibres adjacent the bore of the tube having a disposition substantially parallel to the inner surface of the tube, said mat having a thickness of 0.5 mm to 5 mm.
Claim 11
Independent Claim
86 words
A method of repairing a damaged blood vessel which comprises replacing at least a part of the damaged blood vessel with a prosthetic device comprising an electrostatically spun mat of fibres of diameter 0.1 to 25 microns of a biologically acceptable polymeric material which is selected from the group consisting of polyurethane, polyamide or polyacrylonitrile, and fibres adjacent the bore of the tube having a disposition substantially parallel to the inner surface of the tube, said mat having a thickness of 0.5 mm to 5 mm.
References Cited (Backward Citations)
US3878565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |