Patent ID: 9623223
Date: 2017-04-18
CPC Classifications: A61F,A61L

Claim:
1. A wound dressing, comprising: a first outer layer; a second outer layer; and a liquid-expandable layer positioned between the first outer layer and the second outer layer, wherein the liquid-expandable layer comprises a plurality of liquid-expandable articles each independently attached to a backing layer, wherein the backing layer is in sheet form, wherein the backing layer has a first major surface, and second, opposing major surface and the plurality of liquid-expandable articles is attached to the first major surface and arranged in a predetermined pattern on the backing layer, wherein attachment points of the liquid-expandable articles to the backing layer are substantially coplanar with each other, wherein the plurality of liquid-expandable articles expand away from the first major surface of the backing layer to form expanded articles upon contact with a liquid, wherein the expanded articles have a lateral dimension and a longitudinal dimension and expansion of the plurality of liquid-expandable articles is principally along the longitudinal dimension.