Patent ID: 7709046
Filing Date: 2010-05-04
Classification: A61M,B05D

Abstract:
1. A method for applying a multi-layer lubricious coating to a surface of a medical device comprising a coil, comprising the steps of: a) applying to the surface of at least a portion of the coil of the medical device comprising a coil, at least one layer of an aqueous non-hydrophilic polymer dispersion capable of adhering to said surface and providing a total dry coating thickness in the range of about 1 micron to about 10 microns; and b) applying, to the at least one layer of an aqueous non-hydrophilic polymer dispersion, at least one layer of an aqueous hydrophilic polymer composition capable of adhering to the at least one layer of an aqueous non-hydrophilic polymer dispersion and providing a total dry coating thickness in the range of about 2 microns to about 20 microns, said aqueous non-hydrophilic polymer dispersion or said aqueous hydrophilic polymer composition being free from any cross-linkers, said aqueous non-hydrophilic polymer dispersion or said aqueous hydrophilic polymer composition being applied via a dip coating, spray coating, painting or pad coating technique, said multi-layer coating not substantially bridging the space between the successive loop portions of the device coil.