ISO 16840-2:2018/Amd 1:2024

International
Standard
ISO 16840-2
Second edition
Wheelchair seating —
2018-01
Part 2:
AMENDMENT 1
Determination of physical and
2024-04
mechanical characteristics of seat
cushions intended to manage tissue
integrity
AMENDMENT 1: Updates and addition
of new Annex covering alternatively
sized cushions
Sièges de fauteuils roulants —
Partie 2: Détermination des caractéristiques physiques et
mécaniques des coussins d'assise et dispositifs de répartition de
pression
AMENDEMENT 1: Mises à jour et ajout d'une nouvelle annexe
couvrant les coussins d’autres dimensions
Reference number
ISO 16840-2:2018/Amd.1:2024(en) © ISO 2024

ISO 16840-2:2018/Amd.1:2024(en)
© ISO 2024
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Published in Switzerland
ii
ISO 16840-2:2018/Amd.1:2024(en)
Foreword
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This document was prepared by Technical Committee ISO/TC 173, Assistive products, Subcommittee SC 1,
Wheelchairs.
A list of all the parts of ISO 16840 can be found on the ISO website.

iii
ISO 16840-2:2018/Amd.1:2024(en)
Wheelchair seating —
Part 2:
Determination of physical and mechanical characteristics of
seat cushions intended to manage tissue integrity
AMENDMENT 1: Updates and addition of new Annex covering
alternatively sized cushions
5.7
Replace list items a) and b) with the following:
a) Two 50 mm ± 2 mm diameter indenters, centres spaced 110 mm ± 5 mm apart, representing ischial
tuberosities.
b) Two 25 mm ± 1 mm diameter indenters, centres spaced 350 mm ± 10 mm apart, representing the
trochanters.
6.1
Replace the text with the following:
6.1  Choice of cushion
Obtain an unused sample seat cushion for testing with a nominal width of 400 mm to 450 mm. If a cover is
provided, ensure that it is fitted to the cushion in the orientation specified by the manufacturer.
A cushion with a 400 mm to 450 mm nominal wid
...