Patent ID: 6858310

Claim:
A medical device including a hydrophilic surface comprising: (a) a medical device made from a device forming material comprising monomeric units having reactive functionalities selected from the group consisting of azlactone, carboxylic acid, amine, hydroxy, and epoxy functionalities, and compatible combinations thereof; and (b) a hydrophilic reactive polymers made from a hydrophilic reactive polymer forming material having hydrophilic monomeric units derived from monomers selected from the group consisting of acrylamides, lactams, poly(alkyleneoxy)methacrylates, methacrylic acid, hydroxyalkyl methacrylates and mixtures thereof, wherein the hydrophilic monomeric units have a reactive functionality selected from the group consisting of hydroxy, amine, carboxylic acid and ring opening reactive functionalities and combinations thereof that is complementary to the reactive functionality of the device forming material; wherein the hydrophilic monomeric units are attached to the medical device through points of attachment that are the result of the reaction of isocyanate, hydroxy, amine, carboxylic acid, or ring-opening reactive functionalities or compatible combinations thereof in the device forming monomeric units along with the reactive functionalities of the hydrophilic reactive polymers wherein the device forming monomeric unit reactive functionalities are on or near the surface of the medical device; wherein in the case of the hydroxy or amine hydrophilic monomeric unit reactive functionalities, the device forming monomeric unit comprises azlactone reactive functionalities; and wherein in the case of the carboxylic acid hydrophilic monomeric unit reactive functionalities, the device forming monomeric unit comprises epoxy reactive functionalities; thereby producing a biocompatible coating which can be removed by mechanical abrasion and re-applied to restore the surface properties of the medical device to substantially as-new condition.