Bioadhesive compositions and methods of treatment therewith
First Claim
1. A controlled release ophthalmic treatment composition comprising a bioadhesive and an effective amount of an ophthalmic treating agent, said bioadhesive comprising a water-swellable, but water-insoluble, particulate cross-linked carboxyl-functional polymer said polymer derived from monomers selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, crotonic acid and mixtures thereof having particles sized so that visual impairment is substantially minimized when said composition is contacted with a mucous membrane of the eye, said polymer containing (a) a plurality of repeating units of which at least about 80 percent contain at least one carboxyl functionality, and (b) a cross-linked agent substantially free from polyalkenyl polyether said agent selected from the group consisting of divinyl benzend, N,N-dialkylacrylamide, 3,4-dihydroxy-1,5-hexadiene and 2,5-dimethyl-1,5-hexadiene, said agent being from about 0.05 to 2.0 weight.
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Abstract
A controlled release treatment composition method of use are disclosed. The composition includes a bioadhesive and an effective amount of a treating agent. The bioadhesive is a water-swellable, but water-insoluble, fibrous, cross-linked carboxy-functional polymer containing (a) a plurality of repeating units of which at least about 80 percent contain at least one carboxyl functionality, and (b) about 0.05 to about 1.5 percent cross-linking agent substantially free from polyalkenyl polyether.
96 Citations
19 Claims
- 1. A controlled release ophthalmic treatment composition comprising a bioadhesive and an effective amount of an ophthalmic treating agent, said bioadhesive comprising a water-swellable, but water-insoluble, particulate cross-linked carboxyl-functional polymer said polymer derived from monomers selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, crotonic acid and mixtures thereof having particles sized so that visual impairment is substantially minimized when said composition is contacted with a mucous membrane of the eye, said polymer containing (a) a plurality of repeating units of which at least about 80 percent contain at least one carboxyl functionality, and (b) a cross-linked agent substantially free from polyalkenyl polyether said agent selected from the group consisting of divinyl benzend, N,N-dialkylacrylamide, 3,4-dihydroxy-1,5-hexadiene and 2,5-dimethyl-1,5-hexadiene, said agent being from about 0.05 to 2.0 weight.
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13. A method of controlled release ophthalmic treatment comprising the steps of:
(A) providing a controlled release ophthalmic treatment composition comprising a bioadhesive and an effective amount of ophthalmic treating agent, said bioadhesive comprising a water-swellable, but water-insoluble , particulate cross-linked carboxyl-functional polymer derived from monomers selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, crotonic acid, and mixtures thereof having particles sized so that visual impairment is minimized when said composition is contacted with a mucous membrane of the eye, said polymer containing (a) a plurality of repeating units of which at least about 80 percent contain at least one carboxyl functionality, and (b) a cross-linking agent substantially free from polyalkenyl polyether said agent selected from the group consisting of divinyl benzene, N,N-dialkylacrylamide, 3,4-dihydroxy-1,5-hexadiene and 2,5-dimethyl-1,5-hexadiene, said agent being from about 0.05 to 2.0 weight percent. - View Dependent Claims (14, 15, 16, 17, 18, 19)
Specification