ISO 16840-12:2021 PDF

Scope: This document specifies apparatus, test methods, and disclosure requirements for characterization of wheelchair seat cushion immersion and envelopment properties using indenters instrumented with pressure sensors. This document expands the characterization of products intended to manage tissue integrity It does not provide information specific to cushion performance for a particular individual user, nor is it intended to characterize envelopment or immersion under higher loading conditions, nor to assess the weight capacity of a cushion. This document includes a method that is specific to 220 mm and 255 mm indenters. Dimensions are provided for a 380 mm indenter to allow for extension of the method to larger patient simulation.

ISO 16840-12:2021 Referenced Document

ISO 1302 Geometrical Product Specifications (GPS) — Indication of surface texture in technical product documentation — Amendment 2: Indication of material ratio requirements

2021 ISO 16840-12:2021 Wheelchair seating - Part 12: Envelopment and immersion characterization of seat cushions using a dual semispherical indenter