An oxygen distributor (1) positionable, in use, in a wound for supplying oxygen to the wound has an oxygen delivery area (17) for, in use, receiving a supply of oxygen. At least one tube (19A) extends from the oxygen delivery area, having a tube wall with an oxygen-permeable, liquid-impermeable section. Oxygen delivered to the oxygen delivery area can flow away from the oxygen delivery area along the, or each, tube.