Medical and veterinary apparatus and instruments, in particular occluders, catheters, stents; medical instruments, namely, occluder kits comprising an occluder and an insertion apparatus, catheter kits comprising an insertion tube and a drive unit, stent kits comprising a stent and an insertion apparatus; coated occluders, catheters, stents, coated with biological materials or pharmaceutical preparations; artificial implants, in particular with biological materials or with pharmaceutical prep...