The present invention relates to a wound care system for treating a wound (14) of a patient comprising: a bathing unit (16) being designed to limit a volume (18) surrounding the wound (14) and sealing said volume (18) against the outer atmosphere, the bathing unit (16) comprising at least one gas inlet (28) and one gas outlet (30) being in fluid communication with said volume (18), a source (20) for nitric oxide being connectable to said gas inlet (28), a vacuum unit (34) being connectable to said gas outlet (30) for creating a negative pressure inside said volume (18), and a sponge (36) being placeable inside said volume (18).