Back to results
US 7,402,620 B2Granted
Lubricious coating
AssigneeCovidien LP
InventorDiane McGhee
Life of this patent
Estimating the term…
Abstract
A lubricant coating vehicle for medical devices used to reduce the coefficient of friction of such devices upon exposure thereof to moisture. The lubricant coating vehicle allows the introduction of a pharmacological additive having a release rate that is within acceptable pharmacokinetic criteria. The release rate is adjusted by utilizing different salt forms of the additive and adjusting the concentration of a urethane pre-polymer.
Claims23
A lubricant composition comprising:
- a solvent selected from the group consisting of tetrahydrofuran, dimethylformamide, methylene chloride, cyclohexanone, and mixtures thereof, a hydrophilic polymer other than an isocyanate-terminated prepolymer, an isocyanate-terminated prepolymer and an alkylester of a carboxylic acid selected from the group consisting of ethyl lactate and methylbenzoate.
A method for producing a lubricant composition comprising:
- blending a solvent selected from the group consisting of tetrahydrofuran, dimethylformamide, methylene chloride, cyclohexanone, and mixtures thereof, a hydrophilic polymer other than an isocyanate—terminated prepolymer, an isocyanate-terminated prepolymer, and an alkylester of a carboxylic acid selected from the group consisting of ethyl lactate and methylbenzoate.
A medical device at least partially coated with a lubricious composition comprising:
- a solvent selected from the group consisting of tetrahydrofuran, dimethylformamide, methylene chloride, cyclohexanone and mixtures thereof, a hydrophilic polymer other than an isocyanate-terminated prepolymer, an isocyanate-terminated prepolymer and an alkylester of a carboxylic acid selected from the group consisting of ethyl lactate and methyl benzoate.
Dependencies are inferred from the claim text.