A tissue oxygenation device for creating and oxygen gradient that promotes the diffusion of oxygen from underlying capillaries and subcutaneous tissue up through and over an overlying target site of skin tissue, comprising: a gas impermeable encasement which forms a chamber which surrounds the target site when the encasement is positioned over the target site; an oxygen scavenging member comprising an oxygen scavenger, wherein the oxygen scavenging member is contained within the chamber such that the oxygen scavenger is exposed to oxygen within the chamber, and further wherein the oxygen scavenger removes oxygen contained within the chamber at a continuous rate; and an adjustable cuff, wherein the adjustable cuff comprises a pliable body which is attached to the gas impermeable encasement on an end of the body and to the target site at another end of the body; wherein the gas impermeable encasement and the adjustable cuff jointly operate to seal the target site within the chamber.