| 摘要 |
A device in such sitting or lying cushions, which comprises a number of elongated air or gas-filled compartments (12), which are disposed close to each other and are separated from each at least partially by parallel running adjoining seams, said compartments being at least partially combined with a support (10), said compartments being entirely separated from each other by the adjoining seams which run transversely of the mattress and in which at least every second adjoining seam is affixed to the support and in which the distance between two adjacent adjoining seams which are secured to the support is less than the combined width of two adjacent compartments (12). The compartments (12) are entirely closed and have a slight super-pressure such as of the order of 20-200 H2O relative to the pressure of the ambient air, and to form bag-elements (11) which each comprises at least one displacement element (13), which fills the bag like element at least essentially viz. to the order to 60 - 95 %, and which is adapted to be gas or air filled to a pressure slightly above the said pressure in the compartment so that the displacement element thereby controls the pressure in the bag-element (12) to a suitable value to avoid pressure wounds.
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