ISO 16840-2:2018 PDF

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.

ISO 16840-2:2018 Referenced Document

ISO 10993-10:2010 Biological evaluation of medical devices - Part 10: Tests for irritation and skin sensitization
ISO 10993-1:2009 Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process
ISO 1302:2002 Geometrical Product Specifications (GPS) - Indication of surface texture in technical product documentation
ISO 16840-1:2006 Wheelchair seating - Part 1: Vocabulary, reference axis convention and measures for body segments, posture and postural support surfaces
ISO 554:1976 Standard atmospheres for conditioning and/or testing; Specifications
ISO 7176-26:2007 Wheelchairs - Part 26: Vocabulary
ISO 9073-8:1995 Textiles - Test methods for nonwovens - Part 8: Determination of liquid strike-through time (simulated urine)
ISO/IEC GUIDE 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

2018 ISO 16840-2:2018 Wheelchair seating - Part 2: Determination of physical and mechanical characteristics of seat cushions intended to manage tissue integrity
2007 ISO 16840-2:2007 Wheelchair seating - Part 2: Determination of physical and mechanical characteristics of devices intended to manage tissue integrity - Seat cushions