| 摘要 |
An ergonomic seating cushion has a central cavity whose interior boundaries form an oscillating waveform. This feature reduces the pressure gradient on skin pressing against the cushion, promoting blood flow to the region while maintaining a central area of little or no pressure upon the perineum area. The cushion may have a dimpled surface to further lower pressure gradients, and may be tilted forward to assist in increasing lordosis and reducing lower back pain, or rearward when used by pregnant women to assist in compensating for the weight of an unborn child during pregnancy.
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