US4042978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetics
Assignee: Imperial Chemical Industries Ltd
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Filing: 1975-06-11
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Granted: 1977-08-23
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Expires: 1995-06-11
Abstract
Abstract A prosthetic device having at least part of the surface thereof made of a material having a surface energy, as hereinbefore defined, in the range 50 erg cm-2 to 100 erg cm-2, for example, made of a plastics material which is a copolymer comprising repeat units having the structure -CH2-CH2-O- and other units capable of stabilizing the copolymer in water, the copolymer comprising at least 10% by weight of units having the structure -CH2-CH2-O- and no more than 95% by weight of said units.
Inventors
- 👤 Michael Edward Benet Jones
- 👤 Eileen Jones
- 👤 Joseph Franciszek Jaworzyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:19
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; A; A61; A61L; A61L27/00; A61L27/14; A61L27/18
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
184 words
A prosthetic device having a shape suitable for insertion into a human or animal body to replace a part thereof, said device having at least part of the surface thereof made of a plastic, water-soluble, non-toxic material having a surface energy in the range 50 erg cm -2 to 100 erg cm -2 whereby said device is capable of being bonded more strongly to collagenous body tissue than corresponding devices which do not have such a surface energy, said plastic material being a copolymer of poly(ethylene) glycol and bis(β-hydroxy) isophthalate, the copolymer comprising at least 10% by weight of units having the structure CH 2 13 CH 2 --O and no more than 95% by weight of said units and having a reduced viscosity measured on a 1% weight/volume solution in o-chlorphenol at 25° C in the range 0.4 dl.g -1 to 2.0 dl.g -1 , wherein said polymeric material being stable in water to the extent that a film of material 0.5 mm. thick which has been immersed in water at 37° C for 24 hours does not break when flexed through 180°.
Claim 2
Dependent Claim
184 words
A prosthetic device having a shape suitable for insertion into a human or animal body to replace a part thereof, said device having at least part of the surface thereof made of a plastic, water-soluble, non-toxic material having a surface energy in the range 50 erg cm -2 to 100 erg cm -2 whereby said device is capable of being bonded more strongly to collagenous body tissue than corresponding devices which do not have such a surface energy, said plastic material being a copolymer of poly(ethylene) glycol and bis(β-hydroxy) isophthalate, the copolymer comprising at least 10% by weight of units having the structure CH 2 13 CH 2 --O and no more than 95% by weight of said units and having a reduced viscosity measured on a 1% weight/volume solution in o-chlorphenol at 25° C in the range 0.4 dl.g -1 to 2.0 dl.g -1 , wherein said polymeric material being stable in water to the extent that a film of material 0.5 mm. thick which has been immersed in water at 37° C for 24 hours does not break when flexed through 180°.
Claim 3
Dependent Claim
16 words
A prosthetic device as claimed in claim 1 said device being a bile or urinary duct.
Claim 4
Dependent Claim
14 words
A prosthetic device as claimed in claim 1, said device being a cosmetic implant.
Claim 5
Dependent Claim
14 words
A prosthetic device as claimed in claim 1, said device being an arterial graft.
Claim 6
Dependent Claim
18 words
A prosthetic device as claimed in claim 1, said device being an anchor point for a heart valve.
Claim 7
Dependent Claim
13 words
A prosthetic device as claimed in claim 1, said device being a net.
Claim 8
Dependent Claim
23 words
A prosthetic device as claimed in claim 1, wherein the copolymer contains polyethylene glycol in blocks of length 500 to 6000 molecular weight.
Claim 9
Dependent Claim
148 words
A prosthetic device having a shape suitable for insertion into a human or animal body to replace a part thereof, said device having at least part of the surface thereof made of a plastic, water-soluble, non-toxic material having a surface energy in the range 50 erg cm -2 to 100 erg cm -2 whereby said device is capable of being bonded more strongly to collagenous body tissue than corresponding devices which do not have such a surface energy, said plastics materal comprising a polymeric structure containing from 10 to 95% by weight of units of solid polyethylene oxide and from 90 to 5% of units of a polymerized methacrylate monomer wherein said plastics material being stable in water to the extent that a film of material 0.5 mm thick which has been immersed in water at 37+ C for 24 hours does not break when flexed through 180°.
Claim 10
Dependent Claim
148 words
A prosthetic device having a shape suitable for insertion into a human or animal body to replace a part thereof, said device having at least part of the surface thereof made of a plastic, water-soluble, non-toxic material having a surface energy in the range 50 erg cm -2 to 100 erg cm -2 whereby said device is capable of being bonded more strongly to collagenous body tissue than corresponding devices which do not have such a surface energy, said plastics materal comprising a polymeric structure containing from 10 to 95% by weight of units of solid polyethylene oxide and from 90 to 5% of units of a polymerized methacrylate monomer wherein said plastics material being stable in water to the extent that a film of material 0.5 mm thick which has been immersed in water at 37+ C for 24 hours does not break when flexed through 180°.
Claim 11
Dependent Claim
16 words
A prosthetic device as claimed in claim 8, said device being a bile or urinary duct.
Claim 12
Dependent Claim
14 words
A prosthetic device as claimed in claim 8, said device being a cosmetic implant.
Claim 13
Dependent Claim
14 words
A prosthetic device as claimed in claim 8, said device being an arterial graft.
Claim 14
Dependent Claim
18 words
A prosthetic device as claimed in claim 8, said device being an anchor point for a heart valve.
Claim 15
Dependent Claim
13 words
A prosthetic device as claimed in claim 8, said device being a net.
Claim 16
Dependent Claim
22 words
A prosthetic device as claimed in claim 8, wherein the copolymer contains from 90 to 5% of units of polymerized methyl methacrylate.
Claim 17
Dependent Claim
22 words
A prosthetic device as claimed in claim 8, wherein the copolymer contains from 90 to 5% of units of polymerized glycol dimethacrylate.
Claim 18
Dependent Claim
37 words
A prosthetic device as claimed in claim 8, wherein the copolymer has a reduced viscosity measured on a 1% weight/volume solution in o-chlorphenol at 25° C in the range 0.4 dl.g -1 to 2.0 dl.g -1 .
Claim 19
Dependent Claim
28 words
A prosthetic device as claimed in claim 8, wherein the copolymer contains between 30 and 80% by weight of units having the structure CH 2 --CH 2 --O.
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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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |