Abstract: A sterile mattress unit that contains a mattress, an air tight cover of micro filter material enclosing the mattress and a gas reservoir that supplies gas to the interior of the cover is disclosed. The reservoir is a flexible structure that expands and contracts as weight is placed upon or taken from the surface of the mattress. A medicated agent is preferably included in the gas and gas reservoir to provide protection against microorganisms.

Abstract: A liquid discharge unit having a toilet tray with drainage at the bottom of the tray. Tubing extends from this drainage to a collection vessel. The tray has an upper open surface covered by a non-corrosive nylon net. The net has above it sealed foam blocks and an outer sealed cell foam sheet to facilitate comfort to the patient and to provide a lying surface that will minimize the formation of decubitus ulcers.