Biomedical Engineering Reference
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Fig. 6.2 a Two-layered, structured soft foam mattresses with structured inlays (Dunlopillo) and
b with a gap between the upper and lower layer (Anti-Decubitus-System Viscoelastic M 801 B,
Wulff MedTec) in perspective and cut view
Fig. 6.3 Three layered anti-decubitus matress Thevo Adapt Plus 100 (without incontinence
cover): a perspective view and b cut view
Fig. 6.4 Micro-stimulation-system (MiS): a mattress and base frame with elastic wing leaf units
(b, c) single wing leaf unit in top and perspective view (T HOMASHILFEN )
animal experiments that have contributed to current knowledge on the aetiology of
the pressure sore, numerical simulation is indispensible.
Currently, various anti-decubitus systems (static/dynamic) are commercially
employed in patient body support, all claiming to provide 'pressure-relief' and
decubitus prophylaxis (see Figs. 6.2 , 6.3 , 6.4 , 6.5 ). The G ERMAN I NSTITUTE F OR
S ANDARDIZATION (DIN) released a directive in 1977 defining material specifications
and testing requirements for soft foam hospital mattresses. Despite widespread use
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