ISO 22523:2006

Overview

ISO 22523:2006 - External limb prostheses and external orthoses: Requirements and test methods sets out general requirements and standardized test methods for external limb prostheses and orthoses (classified under ISO 9999: 06 03–06 15; 06 18–06 27). The standard addresses safety, performance, material characteristics and the information manufacturers must supply to support normal conditions of use for both individual components and assembled devices.

Key Topics

• Scope and classifications: Applies to external limb prostheses and external orthoses (not special seating).
• Risk management & intended performance: Requirements for hazard identification, risk control and technical documentation supporting intended use.
• Clinical evaluation: Demonstration of suitability and clinical performance as part of conformity.
• Strength & mechanical requirements: Methods and limits for mechanical strength, restrictions on use, forces in soft tissues, ergonomic principles.
• Materials & safety: Flammability, toxicity of combustion products, biocompatibility, contamination, corrosion resistance and sterilization/sterility.
• Electrical & EMC safety: Requirements for battery-powered devices, circuit protection, programmable electronics, radio equipment and electromagnetic compatibility.
• Noise, vibration & surface temperature: Limits and test approaches to protect user comfort and safety.
• Design & moving parts: Safety of moving parts, connections and actuating mechanisms (including force/moment tests).
• Information & labelling: Required user and technical information, labelling, intended use and packaging.
• Normative/Informative annexes: Includes guidance and test methods (e.g., strength testing for upper-limb prostheses, knee joint mechanical tests, flammability/toxicity tests, actuating-force methods, and linkage to essential safety principles).

Applications and Who Uses It

ISO 22523:2006 is used by:

• Manufacturers of prosthetic and orthotic components and assemblies to design, test and document safety and performance.
• Test laboratories implementing repeatable mechanical, flammability, electrical and biocompatibility tests.
• Clinical engineers and prosthetists/orthotists to ensure devices meet safety and usability criteria.
• Regulatory bodies and procurement teams to assess conformity with medical-device essential requirements (supports EU Directive 93/42/EEC and radio equipment Directive 99/5/EC where applicable).
• R&D teams developing new limb prostheses or orthoses who need established test methods and design guidance.

Related Standards

• ISO 9999 - Classification of assistive products for disabled persons.
• ISO/TR 16142 - Essential principles of safety and performance of medical devices (referenced in Annex E).
• EN 12523:1999 - European predecessor / harmonized standard referenced in the Introduction.
• Relevant EU directives (93/42/EEC, 99/5/EC) for regulatory context.

Keywords: ISO 22523:2006, external limb prostheses, external orthoses, requirements, test methods, ISO 9999, strength testing, biocompatibility, EMC, electrical safety, sterility, risk management.