Patent ID: 7402318

Claim:
A medical device, comprising a core material and an antimicrobial surface coating, wherein said antimicrobial surface coating is an LbL coating obtained by using a layer-by-layer deposition technique and comprises at least one polyanionic-polyquat bilayer composed of one layer of a polyanionic material and one layer of the polyquat of formula (1), wherein R 1 , R 2 , R 3 and R 4 , independently of one another, are C 1 -C 10 hydrocarbon radicals, wherein A and B, independently of one another, are n-alkylene groups having 3 to 15 carbon atoms or n-alkylene groups having 3 to 15 carbon atoms and one or more hydroxyl groups, wherein the index y is a number from about 10 to 500, wherein X is chlorine, bromine, or iodine, wherein said antimicrobial surface coating imparts to said medical device the following surface properties: (a) a low coefficient of friction with a averaged value of less than 1.55, and (b) hydrophilicity characterized by having an averaged contact angle of less than 80 degree, wherein the value of the averaged contact angle is obtained by averaging measurements of at least 3 individual medical devices, and using Sessile Drop test method. wherein the polyanionic material is selected from the group consisting of polyacrylic acid, polymethacrylic acid, and mixtures thereof.