Medical guidewires; catheters; stents; balloon catheters; artificial cardiac valves; artificial cardiac valves for surgical implantation; artificial heart valves for surgical implantation; lasers for surgical purposes; lasers for medical purposes; ablation catheters; drug delivery embolisation apparatus, instruments and systems, namely, embolic microspheres, filters, spring emboli, platinum microemboli, occluders; medical apparatus and instruments for embolization, namely, embolic microsphere...