Abstract: A wound treatment apparatus that ventilates a wound dressing with warm humidified oxygen and/or air at a very low flow rate while under a sub-atmospheric pressure. A controlled flow of filtered air and/or oxygen is selected or blended under atmospheric pressure. This gas is pulled by a downstream vacuum source through a flow limiting device and exits at a sub-atmospheric pressure equal to the vacuum source. The gas flow is then humidified and heated to prescribed conditions before entering a substantially airtight negative pressure type wound dressing which is adapted for ventilation with an added inlet connection. This conditioned gas ventilates and nourishes the wound environment exiting the dressing outlet, through a fluid trap, to the vacuum source.

Abstract: A fluid distribution device which can direct the flow of a fluid from a common source to a plurality of outlet ports wherein a distribution plate is sandwiched between members which serve as inlet and outlet ports. In a preferred manner, there is a flow restrictor in the distribution plate which is provided by passages extending through the plate. The members are symmetrical in configuration with one of the members providing as inlet port and both members providing outlet ports. This results in cost reduction. The fluid distribution device is particularly suitable for use with pneumatic control systems.