Therapeutic cushions and systems for using the same

A therapeutic cushion system comprising:

• a cushion having a cushion body including a lower surface, and an upper user-impingement surface formed by a plurality of inflatable risers;
• an inflation/deflation system for the cushion including a manifold having a plurality of inflation ports, a plurality of deflation ports, and a plurality of electrically actuated valves each movable between a first valve configuration and a second valve configuration;
• a plurality of inlet check valves each movable from a closed position, to an open position to admit a flow of inflation fluid from a pump to one of the inflation ports;
• each of the plurality of electrically actuated valves is movable between a first valve configuration, where one of the plurality of inflatable risers is fluidly connected to one of the plurality of inflation ports and blocked from one of the plurality of deflation ports, and a second valve configuration where the one of the plurality of inflatable risers is fluidly connected to the respective one of the plurality of deflation ports, and is biased toward the first valve configuration;
• and
• a venting manifold having a plurality of vents disposed among the plurality of inflatable risers, the venting manifold fluidically connected to the plurality of deflation ports such that air passing through the plurality of deflation ports is vented through the plurality of vents.

A therapeutic cushion comprising:

• a cushion body including a plurality of inflatable risers, and having formed therein at least one fluid port and a plurality of fluid channels fluidly connecting the at least one fluid port to the plurality of inflatable risers;
• the plurality of inflatable risers are each elongate in a lateral direction extending between a first lateral cushion edge and a second lateral cushion edge, and form at least one row in a fore-aft direction extending between a forward cushion edge and a back cushion edge;
• a plurality of clearances are arranged in alternation with the plurality of inflatable risers, and each of the plurality of inflatable risers has a columnar shape in a vertically extending fore-aft section plane;
• one or more deflation ports fluidically connected to the plurality of inflatable risers;
• a vent fluidically connected to the one or more deflation ports to vent expelled air from the one or more deflation ports, through the vent, and between the plurality of inflatable risers.