The invention relates to a container 1 for drainage of fluids or wound secretion, comprising an inlet opening 3 to connect with a drainage line 2 and an outlet opening 4 for releasing waste air accumulated inside the container 1 during drainage, which is characterized in that the container 1 is pre-evacuated, and the outlet opening 4 is sealable, so that the container 1 is transferable in a first and in a second operating condition, wherein in the first operating condition the outlet opening 4 is sealed, so that a suction can be achieved at the inlet opening 3 caused by the vacuum inside the container 1, and in the second operating condition the outlet opening 4 is opened, so that air can enter the container 1 through the outlet opening 4 and neutralize the vacuum present inside the container 1.
