Surgical instruments and apparatus; surgical apparatus and instruments for medical use; [ cardiac valves for surgical prostheses; artificial cardiac valves; artificial skin for surgical purposes; prosthetic tissues for vascular use; medical stents; needles for medical purposes; surgical sutures; medicinal catheters; intracardiac catheter; medical guidewires; ] medical instruments for cutting tissue [ ; scissors for surgery; knives for surgical purposes; clamps for surgical use; surgical clips...