Patent ID: 6689931
Filing Date: 2004-02-10
Classification: A61F

Abstract:
A wound dressing comprising an intermediate reservoir layer adopted for receiving and retaining wound exudate sandwiched between an inner layer adapted for placement covering a wound and an outer layer providing a cover for the dressing, each of the reservoir, inner and outer layers consisting essentially of non-woven fibers at least a portion of which are overlapping and entangled at the layers' respective interfaces, whereby the respective layers are retained in superposition by the overlapping and entangled fibers to insure integrity and dimensional stability of the wound dressing;the inner layer being characterized by a generally planar surface having a plurality of spaced elevations of the non-woven fibers extending above the planar surface of non-woven fibers; the spaced elevations of non-woven fibers having an adhesive coating on their tips, the number of adhesive-coated spaced elevations and the amount and aggressiveness of the adhesive together constituting an amount of adhesive sufficient to retain the dressing in placement when positioned on a patient's skin to cover a wound; the intermediate reservoir layer being characterized as consisting of highly absorbent non-woven fibers adopted for receiving and retaining wound exudate wicking through the non-adhesive-containing planar surface of the inner layer to the reservoir layer; and the outer layer being adapted for preventing contamination of the dressing and the underlying wound from environmental contaminants, the outer layer being characterized as being air- and vapor-permeable but as being a bacteria- and bulk water-barrier to transmission therethrough.