US5290892A
Expired / Lapsed
US
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Flexible intraocular lenses made from high refractive index polymers
Assignee: Nestle SA
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Filing: 1993-06-14
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Granted: 1994-03-01
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Expires: 2013-06-14
Abstract
Abstract High refractive index copolymers comprised of monomers having the formula: ##STR1## wherein X is H or CH 3 ; m is 0-10; Y is nothing, O, S, or NR wherein R is H, CH 3 , C n H 2n+1 ; (n=114 10) iso OC 3 H 7 , C 6 H 5 , or CH 2 C 6 H 5 ; Ar is an aromatic ring which is unsubstituted or substituted with H, CH 3 , C 2 H 5 , n-C 3 H 7 , iso-C 3 H 7 , OCH 3 , C 6 H 11 , Cl, Br, C 6 H 5 or CH 2 C 6 H 5 ; and n is 1-5; and a cross linking monomer having a plurality of polymerizable ethylenically unsaturated groups are disclosed. Intraocular lenses made of the copolymers which can be inserted into an aphakic eye through a relatively small incision are also disclosed.
Inventors
- 👤 Farhad H. Namdaran
- 👤 Albert R. LeBoeuf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61F2/1616; A61L; A61L27/00; A61L27/14; A61L27/16; B; B29; B29D; B29D11/00; B29D11/02; B29D11/023; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1808; C08F220/1809; C08F220/26; C08F220/30; C08F220/301; G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043; A61L2430/00; A61L2430/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
An intraocular lens comprising a copolymer with an elongation of at least 150% wherein said copolymer is comprised of two monomers, the first of which is 1-phenylethyl acrylate and the second of which is 2-phenylethyl methacrylate, and a copolymerizable cross-linking monomer having a plurality of polymerizable ethylenically unsaturated groups.
Claim 2
Dependent Claim
49 words
An intraocular lens comprising a copolymer with an elongation of at least 150% wherein said copolymer is comprised of two monomers, the first of which is 1-phenylethyl acrylate and the second of which is 2-phenylethyl methacrylate, and a copolymerizable cross-linking monomer having a plurality of polymerizable ethylenically unsaturated groups.
Claim 3
Dependent Claim
33 words
The intraocular lens of claim 1 wherein the first monomer is present at a concentration about 65 wt. % and the second monomer is present at a concentration of about 30 wt. %.
Claim 4
Dependent Claim
13 words
The intraocular lens of claim 1 wherein said cross-linking monomer is 1,4-butanediol diacrylate.
Claim 5
Dependent Claim
12 words
The intraocular lens of claim 1 further comprising an ultraviolet absorbing material.
Claim 6
Dependent Claim
15 words
The intraocular lens of claim 4 wherein the ultraviolet absorbing material is 2-(3'-methallyl -2-hydroxy-5'-methyl-phenyl) benzotriazole.
Claim 7
Dependent Claim
37 words
An intraocular lens comprising a copolymer with an elongation of at least 150% comprised of two monomers, the first of which is 2-phenylethyl acrylate, the second of which is 2-phenylethyl methacrylate, and a cross-linking monomer 1,4-butanediol diacrylate.
Claim 8
Dependent Claim
37 words
An intraocular lens comprising a copolymer with an elongation of at least 150% comprised of two monomers, the first of which is 2-phenylethyl acrylate, the second of which is 2-phenylethyl methacrylate, and a cross-linking monomer 1,4-butanediol diacrylate.
Claim 9
Dependent Claim
12 words
The intraocular lens of claim 6 further comprising an ultraviolet absorbing material.
Claim 10
Dependent Claim
25 words
The intraocular lens of claim 7 wherein the copolymer has a glass transition temperature of about 37° C. and an elongation of at least 200%.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-02-28 | 1997-08-30 | 1998-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-28 | 2001-08-30 | 2002-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-28 | 2005-08-30 | 2006-03-01 | $7700.00 | Window Closed / Lapsed |