An implantable medical device for controlling the rate of release of a therapeutic agent is provided. The implantable medical device features at least one non-bioresorbable polymer, and/or at least one bioresorbable polymer, where the bioresorbable polymers have different degrees of hydrophilicity. Further, the implantable medical device incorporates at least one therapeutic agent contained in said at least one of non-bioresorbable polymer and/or said at least one of bioresorbable polymer. Preferably, the therapeutic agent is at least one anesthetic.
