scope:

This part of ISO 16840 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. Not all test methods may apply to existing and future cushion technologies. It does not include test methods or requirements for determining the fire resistance of cushions. This part of ISO 16840 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.