Patent US6147135A successfully refreshed from Google Patents.
US6147135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of biocompatible polymeric composites
Assignee: Ethicon Inc
•
Filing: 1998-12-31
•
Granted: 2000-11-14
•
Expires: 2018-12-31
Abstract
Abstract Composite materials formed from biocompatible polymer fibers and biodegradable polymers are disclosed. The heat treatment conditions for the reinforcing fibers are described so that the mechanical properties of the fibers can be retained during composite consolidation process. The processing conditions and set-ups to consolidations are constrained to the temperatures lower than fiber heat treatment temperatures. The reinforcing fibers are restrained under tension so that the minimum relaxation occurs during consolidation process.
Inventors
- 👤 J. Jenny Yuan
- 👤 Arindam Datta
- 👤 Dennis D. Jamiolkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:42
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/12; A61L29/126; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/3094; A61F2/30965; A61L27/00; A61L27/40; A61L27/44; A61L27/48; A61L31/00; A61L31/12; A61L31/125; A61L31/129; A61B; A61B17/00; A61B17/04; A61B17/0401; A61B17/064; A61B17/08; A61B2017/00004; A61B2017/0406; A61F2/0063; A61F2/44; A61F2/442; A61F2/82; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30009; A61F2002/3006; A61F2002/30062; A61F2002/30621; A61F2002/30622; A61F2002/30667; A61F2002/30677; A61F2210/00; A61F2210/0004; A61F2250/00; A61F2250/0014; A61F2250/0028; A61F2250/0058; A61F2250/0067; A61M; A61M25/00; A61M25/0009; Y; Y10; Y10S; Y10S525/00; Y10S525/937
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
A composite produced by the process comprising the steps of: (a) restraining and heating biocompatible organic polymeric fibers to a temperature that is above the elevated temperature of consolidation but below the melting temperature of the biocompatible organic fibers for a time sufficient to stabilize the biocompatible organic fibers, thereby providing heat treated fibers; (b) contacting the heat treated fibers with a polymeric matrix to provide a preform; and (c) consolidating the preform by heating the preform to the consolidation temperature for a time sufficient to consolidate the preform and provide a composite.
Claim 2
Dependent Claim
93 words
A composite produced by the process comprising the steps of: (a) restraining and heating biocompatible organic polymeric fibers to a temperature that is above the elevated temperature of consolidation but below the melting temperature of the biocompatible organic fibers for a time sufficient to stabilize the biocompatible organic fibers, thereby providing heat treated fibers; (b) contacting the heat treated fibers with a polymeric matrix to provide a preform; and (c) consolidating the preform by heating the preform to the consolidation temperature for a time sufficient to consolidate the preform and provide a composite.
Claim 3
Dependent Claim
12 words
The composite of claim 1 wherein the fibers are restrained during consolidation.
Claim 4
Dependent Claim
12 words
The composite of claim 2 wherein the composite is a medical device.
Claim 5
Dependent Claim
46 words
The composite of claim 3 wherein the medical device is selected from the group consisting of joint replacement prosthesis, vertebral discs, pins, rods, nails, anchors, cages, screws, plates, tissue scaffolds, staples, arrows, pledgets, catheters, clamps, hooks, buttons, snaps, couplers, vascular and urological stents, valves and clips.
Claim 6
Dependent Claim
64 words
A composite produced by the process comprising the steps of: (a) contacting biocompatible organic polymeric fibers with a polymeric matrix to provide a preform; (b) restraining at least some of the biocompatible organic fibers present in the preform; and then (c) consolidating the preform by heating the preform to the consolidation temperature for a time sufficient to consolidate the preform and provide the composite.
Claim 7
Dependent Claim
64 words
A composite produced by the process comprising the steps of: (a) contacting biocompatible organic polymeric fibers with a polymeric matrix to provide a preform; (b) restraining at least some of the biocompatible organic fibers present in the preform; and then (c) consolidating the preform by heating the preform to the consolidation temperature for a time sufficient to consolidate the preform and provide the composite.
Claim 8
Dependent Claim
46 words
The composite of claim 5 wherein the medical device is selected from the group consisting of joint replacement prosthesis, vertebral discs, pins, rods, nails, anchors, cages, screws, plates, tissue scaffolds, staples, arrows, pledgets, catheters, clamps, hooks, buttons, snaps, couplers, vascular and urological stents, valves and clips.
References Cited (Backward Citations)
US4604097B1
Cited
US4604097A
Cited
US5092884A
Cited
US5674286A
Cited
US5338772A
Cited
US5458653A
Cited
US5697976A
Cited
US5397816A
Cited
US5490962A
Cited
US5468544A
Cited
US5721049A
Cited
US5626611A
Cited
US5578046A
Cited
US5728753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-11-14 | 2004-05-15 | 2004-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-14 | 2008-05-15 | 2008-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-14 | 2012-05-15 | 2012-11-14 | $7700.00 | Window Closed / Lapsed |