A mattress (10) for an apparatus patient support, the mattress comprising: a mattress body (18) comprising an air-impermeable material defining a top side (30), an underside (34) and three zones , namely a head zone (38), a body portion (42) and foot area (46)； and a sheet cover (22) extending from the head region (38) on the body portion (42) to the foot area (46) and comprising an air-permeable material, impervious to liquids, wherein the mattress is configured to be coupled to a fluid source (82) to provide air to the mattress to maintain a sufficient flow for inflating one or more inflatable areas, characterized in that: - said three zones are inflatable； - the upper side includes a plurality of openings (50) configured to allow air to escape through the air-impermeable material from at least one of the three inflatable zones； - the air-permeable material, liquid impermeable covering at least a portion of the plurality of openings on the upper side of the body, wherein the cover part comprises multiple openings； and - the sheet cover is attached to the mattress body by a welded seam impermeable to liquids between the sheet covering and the mattress body and impermeable to liquids welded seam (58) surrounding the multiple openings covered.Un colchón (10) para un aparato de soporte del paciente, el colchón que comprende: un cuerpo de colchón (18) que comprende un material impermeable al aire que define un lado superior (30), un lado inferior (34) y tres zonas, a saber, una zona de cabeza (38), una zona del cuerpo (42) y zona del pie (46)； y una sábana de cobertura (22) que se extiende desde la zona de la cabeza (38) sobre la zona del cuerpo (42) hasta la zona del pie (46) y que comprende un material permeable al aire, impermeable a los líquidos, en el que el colchón está configurado para ser acoplado a una fuente de fluido (82) para proporcionar aire al colchón a un flujo suficiente para mantener el inflado de una o más zonas inflables, caracterizado porque: - dic
