A WOUND DRESSING 10 COMPRISING A SEALED ENCLOSURE 12 HAVING AT LEAST ONE COMPARTMENT 14; A PLURALITY OF SPACED APART PILLAR-LIKE STRUCTURES 16 POSITIONED WITHIN THE AT LEAST ONE COMPARTMENT 14; THE PILLAR-LIKE STRUCTURES 16; AND MEANS FOR EVACUATING AIR FROM THE AT LEAST ONE COMPARTMENT 14, WHEREIN THE EVACUATION OF AIR FROM THE AT LEAST ONE COMPARTMENT 14 CAUSES A REDUCTION IN THE DISTANCE BETWEEN AT LEAST TWO OF THE PILLAR-LIKE STRUCTURES 16. FIGURE 1