Anti-decubitus ulcer mattress overlay system with selective elevation structure

An elevation structure system configured for use in cooperation with an elongate anti-decubitus ulcer mattress overlay having sides, ends, and an outer surface, the elevation structure system comprising:

• positionally adjustable, relatively moveable, under-overlay elevation structure configured to be selectively placeable in conditions of transverse under-engagement relative to the overlay between the opposed ends and sides thereof to create substantially non-inclined, elevated, depth-supplemented bands at locations along the length of the overlay, the elevation structure having a construction comprising:
• a dynamic-response core expanse formed of a compressible material having a pre-compression condition therein;
• and
• an elastomeric, moisture- and gas-flow-managing, differential-thickness coating structure load-transmissively bonded to the entirety of the outside of said core expanse to function as a dynamically-responsive unit therewith, the coating structure in some, respiration-window regions, being formed to be moisture-pervious and gas-permeable, and in other, non-respiration regions, being formed to be substantially moisture-impervious and gas-impermeable.

In a mattress overlay system that includes an elongate mattress overlay having sides and ends defined by spaced upper and lower faces and constructed of a core expanse formed of a compressible viscoelastic foam and an elastomeric coating structure bonded to the entirety of the outside of said core expanse to function as a dynamically-responsive unit therewith, operatively associated elevation structure adapted for positionally adjustable under-overlay placement to create substantially non-inclined, elevated, depth-supplemented bands at locations along the length of the overlay, the elevation structure comprising:

• one or more elongate risers, each elongate riser being constructed of:
• a dynamic-response riser core expanse formed of an open-cell, compressible viscoelastic foam that includes an extremely linear region over which a relatively wide change in compressive deflection corresponds to an anatomically insignificant change in compression pressure;
• and
• an elastomeric, moisture- and gas-flow-managing, coating structure load-transmissively bonded to the entirety of the outside of said riser core expanse to function as a dynamically-responsive unit therewith, the coating structure having an outer surface adapted to provide an interfacial stiction grip with the lower face of the overlay when engaged therewith;
• wherein the interfacial stiction grip is provided by means of an allover distribution of suction-cup-like dimples of said coating structure collectively adapted to cooperate with the elastomeric coating structure of said overlay.