Patent ID: 9681990
Date: 2017-06-20
CPC Classifications: A61F,A61L

Claim:
1. An adaptive wound dressing comprising: a liquid absorbing pad having respective upper and lower major surfaces; a liquid-impermeable but vapor breathing (LIVB) layer disposed above the liquid absorbing pad; a first automatically-variable permeability providing (AVPP) layer interposed between the liquid absorbing pad and the LIVB layer, the first AVPP layer having automatically-variable permeability providing AVPP areas; and a first lateral fluid communication layer interposed between the first AVPP layer and the LIVB layer, the first lateral fluid communication layer having openings in liquid lateral communication with one another so as to provide quick, free lateral flow of liquids laterally therethrough, the first lateral fluid communication layer being in fluid transfer communication with the AVPP areas of the first AVPP layer below it, and the first lateral fluid communication layer being in fluid transfer communication with the LIVB layer above it; wherein each of the AVPP areas of the first AVPP layer has a capability to automatically change at least in terms of a respective degree of fluid permeability to a first class of fluids when is subjected to at least one of the same first class of fluids or to a different second class of fluids in sufficient quantity and/or concentration and/or for a sufficient length of time; and wherein the first lateral fluid communication layer is configured to provide an increased area of fluid transfer as between itself and the LIVB layer when fluid is transferred from one of the AVPP areas to the first lateral fluid communication layer, the increased area of fluid transfer being greater in area than that of the one of the AVPP areas.