Contact lens with a hydrophilic layer
First Claim
Patent Images
1. A coated contact lens comprising:
- a lens core comprising an outer surface; and
a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first polyacrylamide species with a reactive electron pair accepting group and a second polyacrylamide species with a reactive nucleophilic group, the first polyacrylamide species being at least partially cross-linked to the second polyacrylamide species through the reactive electron pair accepting group of the first polyacrylamide species and the reactive nucleophilic group through the second polyacrylamide species.
3 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the technology relate to a contact lens having a core that is covalently coated by a hydrogel layer, and to methods of making such a lens. In one aspect, embodiments provide for a coated contact lens comprising a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first PEG species and a second PEG species, the first PEG species being at least partially cross-linked to the second PEG species.
236 Citations
42 Claims
-
1. A coated contact lens comprising:
-
a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first polyacrylamide species with a reactive electron pair accepting group and a second polyacrylamide species with a reactive nucleophilic group, the first polyacrylamide species being at least partially cross-linked to the second polyacrylamide species through the reactive electron pair accepting group of the first polyacrylamide species and the reactive nucleophilic group through the second polyacrylamide species. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A coated contact lens comprising:
-
a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first polyacrylamide species with a reactive sulfonyl group and a second polyacrylamide species with a reactive amine group, the first polyacrylamide species being at least partially cross-linked to the second polyacrylamide species through a sulfonamide covalent linkage between the reactive sulfonyl group of the first polyacrylamide species and the reactive amine group of the second polyacrylamide species. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
-
-
40. A coated contact lens comprising:
-
a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population comprising a first polyacrylamide species with a reactive amine group and a second polyacrylamide species with a reactive carboxyl group, the first polyacrylamide species being at least partially cross-linked to the second polyacrylamide species through an amide covalent linkage between the reactive amine group of the first polyacrylamide species and the reactive carboxyl group of the second polyacrylamide species. - View Dependent Claims (41, 42)
-
Specification