Abstract: A cushioning device for supporting a user in seated or recumbent posture, e.g., in a wheelchair, comprises a resiliently compressible foam base layer with an upper surface formed of a configuration generally conforming to the user's body and defining a fluid drainage path to a fluid drainage and collection area in case of incontinence episodes, an absorbent layer disposed in association with the fluid collection area for collection and holding fluids draining to the collection area, a fluid-impermeable bottom layer covering the underside of the base layer, and a non-absorbent top layer covering the upper surface of the base layer. Together, the fluid permeability and non-absorbent character of the top layer and the compressible resiliency and drainage configuration of the foam base layer for draining fluids to the absorbent layer, mitigate pressure, heat, moisture, shear and friction conditions that are the main contributing causes to formation of decubitus ulcers.

Abstract: An seat cushion is adapted to selectively conform to a user's anatomy with a seat portion having at least one inflatable interior seat compartment with a resiliently compressible foam element disposed therein. The compartment also has an openable and closable seat valve for selectively communicating the seat compartment with the ambient atmosphere. The foam is expanded and compressed within the seat compartment in relation to selective application of a compression force acting on the seat portion when the seat valve is opened to selectively draw inflating air into and exhaust inflating air from the seat compartment.