Compositions and methods for disinfecting and cleaning contact lenses
First Claim
1. A composition for disinfecting a contact lens, comprising about 0.5 w/v % to about 6 w/v % by weight hydrogen peroxide and at least one poly(oxyethylene)-poly(oxybutylene) di-block copolymer, wherein the poly(oxyethylene)-poly(oxybutylene) di-block copolymer is of the formula (EO)m(BO)n, wherein EO is oxyethylene and BO is oxybutylene, and wherein m is 10 and n is 5, wherein the composition comprising (EO)m(BO)n in the range of 0.001 to 0.5 weight/volume percent, wherein the composition is incapable of foaming at any time within a disinfection cycle carried out in a disinfection cup having a platinum-coated plastic disk that catalytically decomposes hydrogen peroxide generating oxygen gas bubbles excessively to cause overflow of the composition from the disinfection cup.
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Accused Products
Abstract
This invention relates generally to disinfection and cleaning systems for medical devices. In a preferred embodiment, the invention relates to compositions, methods and articles for simultaneously cleaning and disinfecting contact lenses. The present invention is directed to ophthalmic compositions containing one or more block copolymers referred to as (polyoxyethylene)-(poly-oxybutylene) block copolymers (“PEO-PBO”). The invention is particularly directed to the use of PEO-PBO di-block copolymers as non-foaming wetting agents in peroxide-based compositions for disinfecting contact lenses.
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Citations
11 Claims
- 1. A composition for disinfecting a contact lens, comprising about 0.5 w/v % to about 6 w/v % by weight hydrogen peroxide and at least one poly(oxyethylene)-poly(oxybutylene) di-block copolymer, wherein the poly(oxyethylene)-poly(oxybutylene) di-block copolymer is of the formula (EO)m(BO)n, wherein EO is oxyethylene and BO is oxybutylene, and wherein m is 10 and n is 5, wherein the composition comprising (EO)m(BO)n in the range of 0.001 to 0.5 weight/volume percent, wherein the composition is incapable of foaming at any time within a disinfection cycle carried out in a disinfection cup having a platinum-coated plastic disk that catalytically decomposes hydrogen peroxide generating oxygen gas bubbles excessively to cause overflow of the composition from the disinfection cup.
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9. A method of disinfecting a contact lens comprising the steps of:
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(a) contacting a contact lens with an aqueous solution of about 0.5 w/v % to about 6 w/v % by weight hydrogen peroxide and at least one poly(oxyethylene)-poly(oxybutylene) di-block copolymer, wherein the poly(oxyethylene)-poly(oxybutylene) di-block copolymer is of the formula (EO)m(BO)n, wherein EO is oxyethylene and BO is oxybutylene, and wherein m is 10 and n is 5, wherein the composition comprising (EO)m(BO)n in the range of 0.001 to 0.5 weight/volume percent, wherein the composition is incapable of foaming at any time within a disinfection cycle carried out in a disinfection cup having a platinum-coated plastic disk that catalytically decomposes hydrogen peroxide generating oxygen gas bubbles excessively to cause overflow of the composition from the disinfection cup, and (b) neutralizing said hydrogen peroxide by catalytic decomposition. - View Dependent Claims (10, 11)
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Specification