ISO 16840-2:2018 車椅子の座席 — Part 2: 組織の完全性を管理することを目的としたシートクッションの物理的および機械的特性の決定 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 173, Assistive products for persons with disability, Subcommittee SC 1, Wheelchairs.

This second edition cancels and replaces the first edition (ISO 16840-2:2007), significant elements of which has been technically revised.

A list of all the parts of ISO 16840 can be found on the ISO website.

Introduction

Wheelchair seating is a sub-speciality of rehabilitation services involving the selection and provision of wheelchair seating products that provide improved body support and injury prevention to the wheelchair user. Seating products are designed and manufactured to meet the needs of persons with varying types and degrees of disability. Some products, such as wheelchair cushions, are designed to manage tissue integrity for persons who are at risk or have pressure ulcers.

The tests described herein are intended to differentiate performance characteristics between cushions and are not appropriate for ranking or scoring cushions or for directly matching these characteristics with the requirements of individual users. The link to clinical efficacy, although implied, has not been validated. It is intended that this document will evolve when the evidence of clinical relevance is confirmed. This document specifically describes test methods that characterize the physical and mechanical properties of seat cushions. Test conditions simulate a symmetric anatomy and posture. The loads used in this document are based on the 50th percentile wheelchair user and are not intended to characterize any cushion properties under bariatric loading conditions or to assess the weight capacity of a cushion. Annex B provides typical ranges for the values measured. Flammability testing is subject to either ISO 7176-16 or, for postural support devices intended to manage tissue integrity, ISO 16840-10.

1 Scope

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.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 7176-26, ISO 16840-1 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography