Apparatus, method and composition for cleaning and disinfecting
AssigneeNovartis AG
InventorsElizabeth Gayle Vlass, Christopher Roy Boam, Ian Michael Riorden George, Stephen Dennis Cooper
Life of this patent
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Abstract
Compositions and methods of disinfecting and cleaning medical articles are disclosed. Disinfecting contact lenses by generating of peracetic acid in situ, while simultaneously cleaning with a proteolytic enzyme, is a preferred embodiment. Tablets for simple consumer use including disinfecting and cleaning means, and delayed release neutralizing means, are also disclosed.
Claims17
A dosage form for cleaning and disinfecting, comprising:
- (a) a first cleaning and disinfecting portion, including:
- (1) a means for generating peracetic acid;
- and
- (2) a cleaning agent;
- (b) a second neutralizing portion, including:
- (1) a means for neutralizing said peracetic acid;
- (2) a means for neutralizing said cleaning agent;
- and
- (3) a means for delayed release of said cleaning agent neutralization means and said peracetic acid neutralization means,
- wherein said first portion is affixed to said second portion.
A method of disinfecting ophthalmic lenses, comprising the steps of:
- (a) forming an aqueous disinfecting solution comprising:
- (1) about 0.5 to 2.0 w/v % sodium perborate monohydrate;
- (2) about 0.1 to 1.0 w/v % tetraacetyl ethylene diamine;
- thereby generating peracetic acid in situ;
- (b) immersing an ophthalmic lens in the treatment solution to disinfect the lens;
- and
- (c) neutralizing said peracetic acid.
A method of cleaning and disinfecting ophthalmic lenses, comprising the steps of:
- (a) forming an aqueous cleaning and disinfecting solution comprising:
- (1) about 0.2 to 2.0 w/v % sodium perborate monohydrate;
- (2) about 0.05 to 1.0 w/v % tetraacetyl ethylene diamine;
- and
- (3) sufficient proteolytic enzyme to remove a substantial amount of protein and lipids from said opththalmic lenses;
- (b) immersing an ophthalmic lens in the treatment solution to clean and disinfect the lens;
- and
- (c) neutralizing said peracetic acid and enzyme.
Dependencies are inferred from the claim text.