US4383879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement for the fixation of osseous prostheses
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1981-03-20
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Granted: 1983-05-17
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Expires: 2001-03-20
Abstract
Abstract The present invention relates to a cement which may be used for the fixation of osseous prostheses. This cement is obtained by hardening of a mixture comprising: (a) at least one epoxide resin having a high reactivity and a very low toxicity, consisting of a diepoxide of a glycidyl ether of bisphenol A; (b) a reactive, non-toxic suppling resin, consisting preferably of hydroxyl-terminated polybutadiene; (c) a mineral filler in powder form; (d) a hardener capable of reacting with said epoxide resin to effect hardening thereof, and (e) a hardening accelerator. The invention is more particularly applicable to the fixation of hip prostheses.
Inventors
- 👤 Antoine Le Du
- 👤 Frantz Langlais
- 👤 Christian Michaud
- 👤 Michel Postel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:46
CPC Classifications
C; C08; C08L; C08L63/00; A; A61; A61L; A61L24/00; A61L24/0047; A61L24/0073; A61L27/00; A61L27/40; A61L27/44; A61L27/446; C09; C09J; C09J163/00; A61L2430/00; A61L2430/02; C08L2666/00; C08L2666/02; C08L2666/04; C08L53/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
131 words
A cement for the fixation of osseous prostheses, obtained by hardening of a mixture comprising: (a) at least one epoxide resin having a high reactivity and very low toxicity, consisting of a diepoxide of a glycidyl ether of bisphenol A; (b) a reactive, non-toxic suppling resin consisting of a polybutadine having hydroxyl groups mainly at the ends of chains; (c) a mineral filler in powder form; (d) a hardener capable of reacting with said epoxide resin in order to provoke hardening thereof, and (e) a hardening accelerator; the mixture comprising for 100 parts by weight of the mixture of epoxide resin and suppling resin, 50 to 85 parts by weight of mineral filler, 10 to 20 parts by weight of hardener and 5 to 10 parts by weight of hardening accelerator.
Claim 2
Dependent Claim
131 words
A cement for the fixation of osseous prostheses, obtained by hardening of a mixture comprising: (a) at least one epoxide resin having a high reactivity and very low toxicity, consisting of a diepoxide of a glycidyl ether of bisphenol A; (b) a reactive, non-toxic suppling resin consisting of a polybutadine having hydroxyl groups mainly at the ends of chains; (c) a mineral filler in powder form; (d) a hardener capable of reacting with said epoxide resin in order to provoke hardening thereof, and (e) a hardening accelerator; the mixture comprising for 100 parts by weight of the mixture of epoxide resin and suppling resin, 50 to 85 parts by weight of mineral filler, 10 to 20 parts by weight of hardener and 5 to 10 parts by weight of hardening accelerator.
Claim 3
Dependent Claim
25 words
The cement of claim 1, wherein the mixture of epoxide resin and of suppling resin comprises at the most 8% by weight of suppling resin.
Claim 4
Dependent Claim
22 words
The cement of claim 1, wherein the polybutadiene has the following formula: ##STR3## where n has an average value close to 30.
Claim 5
Dependent Claim
20 words
The cement of claim 1, wherein the epoxide resin has the following formula: ##STR4## where n is close to 0.2.
Claim 6
Dependent Claim
34 words
The cement of claim 4, wherein the epoxide resin has an average molecular weight of about 380, an epoxy equivalent of the order of 190 and a hydroxy equivalent of the order of 1900.
Claim 7
Dependent Claim
11 words
The cement of claim 1, wherein the hardener is a polyamine.
Claim 8
Dependent Claim
11 words
The cement of claim 6, wherein the hardener is triethylene tetramine.
Claim 9
Dependent Claim
11 words
The cement of claim 1, wherein the hardening accelerator is 2-mercaptoethanol.
Claim 10
Dependent Claim
12 words
The cement of claim 1, wherein the mineral filler is calcium phosphate.
Claim 11
Dependent Claim
17 words
The cement of claim 1, wherein the mineral filler comprises an opaqueing agent consisting of barium sulfate.
Claim 12
Dependent Claim
12 words
The cement of claim 1, wherein said mixture further comprises an antibiotic.
Claim 13
Dependent Claim
19 words
The cement of claim 1, wherein it comprises, for 100 parts by weight of epoxide resin of formula: ##STR5##
Claim 14
Dependent Claim
25 words
where n is close to 0.2, 3. 9 parts by weight of polybutadiene of formula: ##STR6## where n has an average value close to 30,
Claim 15
Dependent Claim
25 words
where n is close to 0.2, 3. 9 parts by weight of polybutadiene of formula: ##STR6## where n has an average value close to 30,
Claim 16
Dependent Claim
27 words
8 parts by weight of triethylene tetramine, 6.06 parts by weight of 2-mercaptoethanol, 65 parts by weight of calcium phosphate having an average granulometry of 100μ, and
Claim 17
Dependent Claim
27 words
8 parts by weight of triethylene tetramine, 6.06 parts by weight of 2-mercaptoethanol, 65 parts by weight of calcium phosphate having an average granulometry of 100μ, and
Claim 18
Dependent Claim
150 words
10 to 22 parts by weight of barium sulfate. 13. A method for fixation of a prostheses to an osseous element, which comprises positioning between the osseous element and the prostheses a mixture comprising: (a) at least one epoxide resin having a high reactivity and very low toxicity, consisting of a diepoxide of a glycidyl ether of bisphenol A; (b) a reactive, non-toxic suppling resin consisting of a polybutadiene comprising hydroxyl groups mainly at the ends of chains; (c) a mineral filler in powder form; (d) a hardener capable of reacting with said epoxide resin in order to effect hardening thereof, and (e) a hardening accelerator; the mixture comprising for 100 parts by weight of the mixture of epoxide resin and suppling resin, 50 to 85 parts by weight of mineral filler, 10 to 20 parts by weight of hardener and 5 to 10 parts by weight of hardening accelerator.
Claim 19
Dependent Claim
150 words
10 to 22 parts by weight of barium sulfate. 13. A method for fixation of a prostheses to an osseous element, which comprises positioning between the osseous element and the prostheses a mixture comprising: (a) at least one epoxide resin having a high reactivity and very low toxicity, consisting of a diepoxide of a glycidyl ether of bisphenol A; (b) a reactive, non-toxic suppling resin consisting of a polybutadiene comprising hydroxyl groups mainly at the ends of chains; (c) a mineral filler in powder form; (d) a hardener capable of reacting with said epoxide resin in order to effect hardening thereof, and (e) a hardening accelerator; the mixture comprising for 100 parts by weight of the mixture of epoxide resin and suppling resin, 50 to 85 parts by weight of mineral filler, 10 to 20 parts by weight of hardener and 5 to 10 parts by weight of hardening accelerator.
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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) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |