Surgical and medical apparatus and instruments, namely, vascular and cardiovascular implants and apparatus in the nature of stents, nanofiber-covered stents, mesh-covered stents, synthetic stent grafts, catheters, catheters for percutaneous coronary intervention (PCI), catheters for percutaneous transluminal coronary angioplasty (PTCA catheters), and catheters for percutaneous transluminal angioplasty (PTA catheter), in particular catheters for balloon dilatation; medical guidewires; medical apparatus and instruments, namely, balloons and stents, nanofiber-covered stents, mesh-covered stents, polyurethane-covered stents, stent delivery systems, synthetic stent grafts, artificial vascular grafts, balloon expandable stents, self-expandable stents, drug eluting stents, absorbable stents, absorbable implantable scaffolds comprising artificial material