A vacuum system for draining an open wound from liquids exuded therefrom,comprising an enclosure sealable to the wound circumference, a vacuum pumpincluding a disposable pump unit detachably attachable to a non-disposabledrive unit, and a waste container for collection of drained liquids. Theenclosure has an outlet connected by means of a tube to an inlet of the pumpunit and the waste container is connected to an outlet of the pump unit, suchthat when the vacuum pump is operated the drained liquids flow through thevacuum pump. The enclosure has one or more bleeding holes providedtherethrough or adjacent to its outlet so that ambient air may enter the tubeand flow together with the drained liquids. The enclosure and the wastecontainer are disposable so that the drained liquids contact only disposableelements and may be disposed of together with all disposable elements.
