TISSUE CONTACTING MATERIAL

摘要

A tissue contacting material comprising a plurality of regions comprising an outer region serving as a protective barrier, one or more inner regions, and a tissue contacting region. The plurality of regions each comprise one or more of a plurality of polymers selected from the group consisting of a first polymer comprising a crosslinked hydrophilic polymer and a second crosslinked polymeric matrix, formed of a crosslinkable polymer adapted to incorporate the first polymer without substantially reacting or crosslinking with the first polymer. The first and/or second polymers provide the respective regions with one or more properties including swellability in the presence of water, active agent content, permeability to the diffusion of active agent from or through the layer, moisture vapor permeability, and adhesion to tissue.