Wheelchair seating Determination of physical and mechanical characteristics of seat cushions intended to manage tissue integrity

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-02-2018

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Apparatus
6 Preparation of test cushion
7 Sequence of testing
8 Frictional properties
9 Impact damping under normal loading conditions
10 Recovery
11 Loaded contour depth and overload deflection
12 Water spillage
13 Biocompatibility
14 Hysteresis test
15 Test report
16 Disclosure requirement
Annex A (normative) - Tapered uniform
        geometry RCLI
Annex B (informative) - Typical ranges for ISO
        16840 2 tests and indicative cushion
        implications
Annex C (informative) - Horizontal stiffness and
        sliding resistance
Annex D (informative) - RCLIs for testing of
        alternatively sized cushions
Bibliography

Specifies apparatus, test methods and disclosure requirements for wheelchair seat cushions intended to maintain tissue integrity and prevent tissue trauma.

This document specifies apparatus, test methods and disclosure requirements for wheelchair seat cushions intended to maintain tissue integrity and prevent tissue trauma. Test conditions simulate a symmetric anatomy and posture and do not represent cushion performance for specific individual users. Loads are intended to represent those seen under the pelvis of a 50th percentile wheelchair user and are not intended to assess the weight capacity of the cushion or to characterize the cushion under bariatric loads. It is possible that not all test methods apply to existing and future cushion technologies. It does not include test methods or requirements for determining the fire resistance of cushions.

This document can also be applicable to tissue integrity management devices used as other support systems, as well as to cushions used in situations other than a wheelchair.

Committee	CH/173/1
DevelopmentNote	Supersedes 04/19976241 DC. (08/2007) Supersedes 15/30316155 DC. (02/2018)
DocumentType	Standard
Pages	36
PublisherName	British Standards Institution
Status	Current
Supersedes	BS ISO 16840-2:2007

Standards	Relationship
ISO 16840-2:2018	Identical
ISO 16840-2:2007	Identical

ISO 1302:2002	Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation
ISO 10993-10:2010	Biological evaluation of medical devices Part 10: Tests for irritation and skin sensitization
ISO 9073-8:1995	Textiles — Test methods for nonwovens — Part 8: Determination of liquid strike-through time (simulated urine)
ISO 10993-1:2009	Biological evaluation of medical devices Part 1: Evaluation and testing within a risk management process
ISO 554:1976	Standard atmospheres for conditioning and/or testing — Specifications
BS 3424-10:1987	Testing coated fabrics Methods 12A and 12B Determination of surface drag
ISO 16840-1:2006	Wheelchair seating — Part 1: Vocabulary, reference axis convention and measures for body segments, posture and postural support surfaces
ISO/IEC Guide 98-3:2008	Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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BS ISO 16840-2:2018

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory

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