Patent US4662887A successfully refreshed from Google Patents.
US4662887A
Expired / Lapsed
US
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Prosthetic devices
Assignee: Cytec Technology Corp
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Filing: 1985-06-17
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Granted: 1987-05-05
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Expires: 2005-06-17
Abstract
Abstract A high modulus endoprosthetic device comprising a polyaryletherketone and optionally reinforcement which may be fibrous, particulate or relatively massive. Loss of reinforcement to the body tissues may be reduced by provision of polymer rich layer at the surface of the device, particularly in locations where reinforcement is exposed at the surface or is likely to be exposed due to tissue or other abrasion.
Inventors
- 👤 Roger M. Turner
- 👤 Martin S. Swerdlow
- 👤 Bernard Bate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:37
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/04; A61L31/06; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/3094; A61F2/30965; A61F2/32; A61F2/36; A61L27/00; A61L27/14; A61L27/18; A61L27/40; A61L27/44; A61L27/443; A61L31/12; A61L31/125; A61L31/126; A61F2/30767
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
22 words
A high modulus prosthetic device comprising a polyaryletherketone, wherein said polyaryletherketone is a crystalline polymer of inherent viscosity of at least 0.7.
Claim 2
Dependent Claim
22 words
A high modulus prosthetic device comprising a polyaryletherketone, wherein said polyaryletherketone is a crystalline polymer of inherent viscosity of at least 0.7.
Claim 3
Dependent Claim
21 words
A high modulus prosthetic device according to claim 1 comprising a polymeric component containing repeat units of ##STR4## and/or of ##STR5##
Claim 4
Dependent Claim
55 words
A high modulus prosthetic device according to claim 1 comprising units of ##STR6## where A is a direct link, a sulphur atom, a divalent hydrocarbon radical or a group --Q--(Ar--Q 1 ) n in which Q is --CO--, --SO--, or --O--, Ar is a divalent aromatic radical; and n is 0, 1, 2 or 3.
Claim 5
Dependent Claim
15 words
A high modulus prosthetic device according to claim 1 further comprising fibrous or particulate reinforcement.
Claim 6
Dependent Claim
17 words
A high modulus prosthetic device according to claim 4, in which the reinforcement is of carbon fibre.
Claim 7
Dependent Claim
31 words
A high modulus prosthetic device comprising a reinforcing material and a tissue compatible polymer, said tissue compatible polymer disposed such that no reinforcing material is exposed to tissue within the body.
Claim 8
Dependent Claim
31 words
A high modulus prosthetic device comprising a reinforcing material and a tissue compatible polymer, said tissue compatible polymer disposed such that no reinforcing material is exposed to tissue within the body.
Claim 9
Dependent Claim
28 words
A high modulus prosthetic device according to claim 6 in which the polymeric component is present in the form of a layer at the surface of said device.
Claim 10
Dependent Claim
18 words
A high modulus prosthetic device according to claim 1 which further comprises a relatively massive reinforcing core component.
Claim 11
Dependent Claim
25 words
A high modulus prosthetic device according to claim 3, wherein A is selected from the group consisting of a phenylene group and a dimethylmethyline group.
Claim 12
Dependent Claim
22 words
A high modulus prosthetic device according to claim 3, wherein Ar is selected from the group consisting of phenylene, biphenylene or terphenylylene.
Claim 13
Dependent Claim
62 words
A method of preparing a high modulus polyaryletherketone endoprosthetic device comprising the steps of: (a) forming said device from the polymer of claim 1 in a desired shape by compression or injection molding; (b) drilling holes in said device to allow screw attachment of said device within the body; and (c) coating said drilled device with a further layer of said polyaryletherketone.
Claim 14
Dependent Claim
21 words
Method of using the high modulus prosthetic device of claim 1 which comprises locating and affixing said device within the body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |