ISO 11334-1:2007 PDF

Overview - ISO 11334-1:2007 (Elbow crutches)

ISO 11334-1:2007 specifies requirements and test methods for elbow crutches (assistive products for walking manipulated by one arm) fully equipped with handgrip and tip. The standard defines safety, ergonomics, performance and manufacturer information (marking and labelling) and establishes mechanical tests that reflect everyday use during the through-swing gait. It is applicable to elbow crutches intended for users of not less than 35 kg. Friction testing of rubber tips against walking surfaces is covered separately.

Key topics and technical requirements

• Scope and definitions: terms such as cuff, handgrip, arm/leg section, tip, support and grip angles are defined to ensure consistent measurements.
• Cuff requirements:
  • Cuff internal depth must be > half the internal width.
  • Front opening must be able to expand to 75 mm under a pulling force up to 120 N, with permanent deformation ≤ 5 mm.
• Handgrip:
  • May be adjustable but must remain secure after testing.
  • Width requirement: 25–50 mm (except anatomical grips).
• Leg section and tip:
  • Tip must prevent penetration by the leg section and be replaceable and secure.
  • Contact face diameter minimum: 35 mm.
• Adjusting devices:
  • Height adjustments must not loosen after mechanical tests and must be marked with maximum allowable elongation.
• Materials:
  • Structural components made from recycled plastics must have strength equivalent to virgin materials throughout the crutch life.
• Mechanical durability and tests:
  • Tests include separation, static loading, fatigue, and low-temperature falling.
  • Typical test environment: 21°C ± 5°C.
  • Test sequence: measurements → separation → static loading → fatigue → low temperature falling.

Practical applications - who uses ISO 11334-1:2007

• Manufacturers and product designers of elbow crutches for design validation, conformity and product specification.
• Testing laboratories and quality assurance teams to perform standardized mechanical, durability and safety tests.
• Procurement and regulatory bodies for compliance verification and purchasing specifications in healthcare settings.
• Clinicians and rehabilitation specialists who need assurance of ergonomics, safety and suitability for patient use.
• Suppliers and retailers for accurate marking, labelling and documentation to meet regulatory expectations.

Related standards

• ISO 9999 - Classification and terminology for assistive products.
• EN 1041 - Information supplied by the manufacturer with medical devices.
• ISO 11334 (other parts) - e.g., Part 4 for walking sticks with three or more legs.

Keywords: ISO 11334-1:2007, elbow crutches, assistive products, test methods, cuff, handgrip, static load, fatigue testing, low temperature embrittlement, safety, ergonomics, manufacturer information.