A method of manufacturing an implantable medical lead is disclosed herein. The delivery device is minimally invasive, refillable and may be easily fixed to the treatment area. The metal plates are integrally provided with connection portions to be connected to a substrate. Results form a basis for the development of S-dimethylarsino-glutathione, S-dimethylarsino-thiosuccinic acid, S-dimethylarsino-thiobenzoic acid, and other organic arsenicals as an anti-cancer therapy, combining high efficacy with very low, if any, toxicity.