Lumbar support cushion used to maintain pelvic stability and lumbar spine physiological curvature

Abstract

This invention herein relates to lumbar support cushion used to maintain pelvic stability and lumbar spine physiological curvature, belonging to technical field of ergonomic protective gear. The cushion uses bionic curved surface and biomechanical coupling system to solve problems of non-physiological posterior displacement of the lumbar spine, sacrum suspension and insufficient biomechanical coordination caused by fixed embracing side wings and single sciatic support of traditional lumbar cushions. The core innovations include: 1. Central convex curved surface adopts composite curvature structure to cover the continuous support area of the lumbar sacrum; 2. Non-embracing side wings curved surface allows natural waist twisting and lateral bending through the gradual change of curvature toward the back; 3. Sciatic bearing area adopts two-way diffusion covers the outer edge of ischial tuberosity by 10-15 mm, and W-shaped and V-shaped arcs are adapted to more than 90% of hip shapes (according to GB/T 10000-2023).

Dependencies are inferred from the claim text.