The present invention relates to a negative pressure device for a negative pressure treatment of a lower part of a patients body, wherein the negative pressure device comprises: -a pressure chamber, wherein the negative pressure device is configured to maintain within an interior of the pressure chamber a negative pressure with respect to an ambient pressure, wherein the pressure chamber comprises a first opening, wherein the first opening is configured to introduce the lower part of the patients body into the interior of the pressure chamber, -a closure element arranged around the periphery of the first opening, wherein the closure element is configured to provide an airtight sealing around a patients body, and -a bed for the substantially horizontal support of the patient, wherein the bed comprises a first bed element having a first lying surface and a second bed element having a second lying surface with a gap between the first bed element and the second bed element to allow the closure element to be moved between the first bed element and the second bed element. The bed is at least partially movable between a treatment position, in which the first bed element is outside the pressure chamber and the second bed element is inside the pressure chamber, and an access position, in which the first bed element is further spaced from the pressure chamber and the second bed element is at least partially moved out of the interior of the pressure chamber through the first opening, The bed comprises a frame element, wherein the frame element is fixedly connected to both the first bed element and the second bed element and that the frame element extends through a second opening from outside into the interior of the pressure chamber.La présente invention concerne un dispositif à pression négative destiné à un traitement par pression négative dune partie inférieure du corps dun patient, le dispositif à pression négative comprenant : - une chambre de pression, le dispositif à pr
