Patent ID: 8690242

Claim:
A sacral support for a person sitting in a chair having a seat back, comprising: a rigid base that includes a bottom surface, a peripheral edge, and a top surface, the top surface including a plurality of pegs projecting upwardly away therefrom; and an elastomeric cushion that includes a bottom surface, a peripheral edge, and a convex top surface, the bottom surface including a plurality of apertures each aligned with one of the pegs of the base and adapted to receive the peg therein, the bottom surface of the cushion being supported by the top surface of the base and laterally mutually constrained by the plurality of pegs engaged in the plurality of apertures, the elastomeric cushion being substantially hollow but for a plurality of strengthening ribs radiating laterally away from a central axis thereof; whereby with the cushion engaged with the base at the pegs and apertures thereof, the sacral support may be positioned against the seat back of the chair to produce pressure against the person's sacrum when seated.