The invention relates to a system for replacing a heart valve that is diseased owing to inflammation and/or an infection. The system has: a stent system with at least one expandable stent and a replacement heart valve which is secured to the at least one stent and has at least two heart valve leaflets. The at least one stent has a coating with an antimicrobial substance or an antimicrobially effective carrier material, preferably on the inner side and/or the outer side.
