Patent ID: 8844079

Claim:
A pressure adjustable mattress system to support a patient, comprising: a pressure adjustable mattress; a controller coupled to the pressure adjustable mattress to control the mattress in an automatic pressure relief mode and in a user adjustable mode, by, without leaving the automatic pressure relief mode: computing an optimum pressure, controlling the pressure in the pressure adjustable mattress to the optimum pressure, receiving a user-specified pressure adjustment at a user interface device, wherein the user-specified pressure adjustment is specified relative to the computed optimum pressure, modifying the computed optimum pressure with the user-specified pressure adjustment, and controlling the pressure in the pressure adjustable mattress to maintain the modified optimum pressure; and a user interface, coupled to the controller, the user interface including a selectable input to enable a user to control pressure adjustment of the pressure adjustable mattress in the automatic pressure relief mode and the user adjustable mode.