1. A medical device having at least one coating containing at least one polyurethane urea, characterized in that the polyurethane urea as an end group contains a copolymer structural unit of polyethylene oxide and polypropylene oxide. ! 2. The medical device according to claim 1, characterized in that the polyurethane urea contains structural units that are derivatives of at least one polycarbonate containing hydroxyl groups. ! 3. The medical device according to claim 1, characterized in that the polyurethane urea contains structural units that are derivatives of at least one aliphatic, cycloaliphatic or aromatic isocyanate. ! 4. The medical device according to claim 1, characterized in that the polyurethane urea contains structural units that are derivatives of at least one diamine or amino alcohol. ! 5. A medical device according to one of claims 1 to 4, characterized in that this coating contains polyurethane urea, which is formed from:! a) at least one polycarbonate polyol with an average molecular weight of between 400 g / mol and 6000 g / mol, as well as hydroxy functionality from 1.7 to 2.3 or from mixtures of such polycarbonate polyols; ! b) at least one aliphatic, cycloaliphatic or aromatic polyisocyanate or mixtures of such polyisocyanates in an amount of from 1.0 to 4.0 mol per each mol of polycarbonate polyol; ! c) at least one monofunctional mixed polyoxyalkylene ether of polyethylene oxide and polypropylene oxide or a mixture of such polyethers with an average molecular weight1. Медицинское устройство, имеющее по меньшей мере одно покрытие, содержащее по меньшей мере одну полиуретанмочевину, отличающееся тем, что эта полиуретанмочевина в качестве концевой группы содержит сополимерную структурную единицу из полиэтиленоксида и полипропиленоксида. ! 2. Медицинское устройство по п.1, отличающееся тем, что эта полиуретанмочевина содержит структурные единицы, которые являются производными по меньшей мере одного поликарбоната, содержащего гидроксильные групп