A method of constructing an infusion set, patch pump, or element thereof, comprising the steps of mixing at least two of a solvent, an anesthetic, and a lubricant, applying said mixture as a coating to at least one surface of an infusion set, patch pump, or element thereof, and substantially removing said solvent after coating to provide at least one of an anesthetic layer and a lubricant layer upon said infusion set, patch pump, or element thereof.