| 摘要 |
<p>A support surface for the back of a person, in particular a seat, mattress, berth, cushion or bicycle saddle having a support surface for the buttocks of the person, in particular a seating surface with a central channel (4) extending in the direction of the vertebral column. The surface, in particular a back rest, which supports the back, also has a central channel (4) extending in the direction of the vertebral column. The channel is as wide as or wider than the vertebral column and so deep that the vertebral column does not touch the supporting surface.</p> |
