Surgical implants comprised of artificial materials; medical guidewires; catheters; stents; medical apparatus and instruments; balloon catheters; orthopedic articles; artificial cardiac valves; cardiac valves for surgical implantation; heart valves for surgical implantation; lasers for surgical purposes; lasers for medical purposes; ablation catheter; drug delivery embolisation apparatus, instruments and systems; medical apparatus and instruments for embolization; implants [prostheses] for use in bone grafting.