Overview
EN ISO 21856:2022 - Assistive products - General requirements and test methods (ISO 21856:2022) provides a unified, practical framework of general requirements and standardized test methods for assistive products that are considered medical devices in some jurisdictions. The standard applies to devices intended to alleviate or compensate for a disability, but excludes products that fulfil their purpose by administering pharmaceutical substances. Note that not all items in ISO 9999 are medical devices; EN ISO 21856 can be applied selectively where relevant.
Key topics and technical requirements
The standard covers broad safety, performance and documentation topics relevant to designers, manufacturers and test laboratories, including:
- Risk analysis and risk management for intended use and foreseeable misuse
- Intended performance and technical documentation, including clinical evaluation and investigations
- Materials: flammability, biocompatibility, contaminants, resistance to corrosion and microbiological contamination
- Mechanical safety: load limits, moving parts, prevention of traps, fastening and immobilising means, means to prevent falling out
- Electrical safety and EMC: battery indicators, electrical heating elements, ingress protection for liquids/particulates, wiring and pendant controls
- Acoustics and vibration: emitted sound levels and audible warning device characteristics
- Sterility and infection control: sterilization processes, maintenance of sterility, cleaning and machine-washable product requirements
- Usability and accessibility: design considerations for users with sensory or cognitive impairments and feedback mechanisms
- Test methods and pass/fail criteria for overflow, spillage, leakage, surface temperature and other hazards
Applications and who uses this standard
EN ISO 21856:2022 is intended for:
- Manufacturers and product developers of assistive technologies to design safe, compliant products
- Test laboratories and conformity assessment bodies performing verification and validation testing
- Regulatory authorities and procurement teams assessing device safety and performance for market access or purchasing decisions
- Clinicians, rehabilitation engineers and service providers who specify or evaluate assistive products for users
- Standards committees and policy makers harmonizing accessibility and medical device requirements
Practical uses include product design validation, risk management documentation, pre-market testing, clinical evaluation planning, and establishing cleaning/sterilization protocols.
Related standards
- ISO 9999 (classification of assistive products) - referenced for product categories
- Other product-specific International Standards (for particular types of assistive products) - consult the normative references in EN ISO 21856 for applicable specialized requirements
Keywords: EN ISO 21856:2022, assistive products, general requirements, test methods, medical devices, accessibility, ISO 21856, risk management.
