Patent ID: 8883244

Claim:
A method of coating a balloon of a catheter, comprising: mounting a balloon on a support structure, the balloon comprising a polymeric component; applying a treatment material comprising a surfactant, and a halogen, halogen salt, halogen complex or a moiety comprising a halide to the polymeric component; after application of the treatment material, grounding or applying a charge to the polymeric component; and applying a charged drug to the polymeric component such that the drug is electrostatically deposited on the balloon; wherein the surfactant is selected from the group consisting of Vitamin E TPGS, Ascorbyl palmitate, gelatin, lecithin, egg yolk phopholipid, phosphatidylcholine, polyethylene glycol-phosphatidyl ethanolamine conjugate, polyethylene glycol Phospholipid conjugates, and combinations thereof.