Abstract: The present invention relates to the reduction of tissue interface pressure. The present invention provides a method to immerse an individual to a desired depth into a support surface. The method of the present invention maintains a desired level of immersion over time independent of the motion of the individual or changes in the position of the support surface or externally applied loads to the support surface, alone or in combination. The method of the present invention is an improvement to using an individual's weight or height or other sensor to determine inputs to an algorithm for immersing the individual to a certain depth into the surface. No pressure measurements or displacement measurements are required in accordance with the present invention, and the height and weight of the individual is not required.

Abstract: The fluid manifold system includes one or more primary chambers and one or more secondary chambers. Each of the one or more secondary chambers contains a volume of fluid and is connected to an underlying primary chamber, which also contains a volume of fluid. Valves are provided, either distributed throughout the manifold to minimize flow restriction or collected into one or more discrete valve manifolds, which are removably connected to the primary and secondary chambers with flexible tubing or the like. Activating a single valve disconnects one or more of the secondary chambers from the associated primary chamber and connects the same one or more secondary chambers to an alternate primary chamber.

Abstract: A system, method and apparatus for enabling the release of pressure in a supply line including an electronic control member for controlling and enabling the release of pressure in the supply line at a desired pressure whether or not power is maintained to the electronic control member.