of the slits with minimal opening of the slits this is parallel to the u201c wale u201d direction of the underlying fabric fluids from the wound can still escape through the closed slits and be absorbed into a secondary dressing which can be removed and replaced without interfering with the healing process or causing pain to the patient the combination of a primary dressing that requires minimal changes and a secondary dressing that is easy to change and replace reduces wound maintenance costs which benefits patient staff and hospital an example of punctate scarring is illustrated in fig3 the figure shows the skin of a patient whose burn was covered with the ancestor awbat dressing with a fixed porosity of at least 5 5 chronic slow healing wounds require similar treatment as burns in that all necrotic tissue must be removed before closing the wound with a primary dressing in the chronic wound exudate and other fluids are often removed with negative pressure wound therapy npwt a negative pressure above the wound or a positive pressure from the wound causes exudate and other wound fluids to pass through the primary dressing into a secondary dressing the primary dressings currently used during npwt are urethane foam polyvinyl alcohol foam or cotton gauze all require frequent dressing changes and infection complications have been reported when these dressings are not changed frequently the use of the present invention.