Overview
ISO 18777-1:2026 establishes the international standard requirements for transportable liquid oxygen systems for medical use, focusing specifically on common requirements for both base units and portable units, as well as particular requirements for base units. The standard ensures that these systems are designed, constructed, and supplied with safety and performance in mind, supporting their use primarily in home-care settings by lay users, often without direct medical supervision. Notably, stationary liquid oxygen systems used for pipeline oxygen supply in healthcare facilities do not fall within the scope of this standard.
Key Topics
The key areas mandated by ISO 18777-1:2026 include:
- Risk Management: Compliance with risk management approaches to identify and mitigate potential hazards in transportable oxygen systems, referencing ISO 14971 for medical devices.
- Usability Engineering: Consideration of user interaction and potential errors, ensuring that instructions and controls are suitable for both patients and caregivers.
- Material Compatibility: Selection of materials that are corrosion-resistant and compatible with oxygen service per ISO 15001, minimizing the risk of ignition or contamination.
- Design Integrity:
- Robust construction of double-walled, vacuum-insulated cryogenic containers for storing liquid oxygen.
- Integration of content level indicators and safe transfilling devices, allowing for secure and efficient transfer of liquid oxygen from base to portable units.
- Standardized connectors to facilitate interoperability between units from different manufacturers.
- Performance Requirements: Specifications for evaporation and leakage rates, control of venting, temperature management of delivered oxygen, and pressure regulation within safe limits.
- Electrical Safety: Requirements for electrically powered components to comply with IEC 60601-1, with proper alarm systems in place for battery-powered units.
- Marking and Instructions: Clear, detailed labelling and comprehensive instructions for use, including safety warnings, pre-use checks, filling, and maintenance procedures.
Applications
Transportable liquid oxygen systems addressed by ISO 18777-1:2026 are vital for:
- Home Oxygen Therapy: Delivering reliable, portable oxygen therapy for patients with chronic respiratory conditions, enabling greater independence and mobility.
- Community and Mobile Healthcare: Facilitating oxygen delivery outside of hospital environments, including in outpatient care and during transit.
- Patient Safety and Ease of Use: By standardizing design and marking, the document ensures that both patients and caregivers can confidently use these systems while minimizing risks such as fire hazards, cryogenic burns, and improper operation.
- Manufacturing & Quality Assurance: Guiding medical device manufacturers in aligning with international best practices for materials, electrical safety, risk assessments, and documentation, thereby supporting regulatory compliance and market access.
Related Standards
ISO 18777-1:2026 references and aligns with several other international standards to provide a comprehensive safety and quality framework, including:
- ISO 14971: Medical devices - Risk management
- ISO 15001: Compatibility with oxygen for medical devices
- ISO 17256: Respiratory therapy tubing and connectors
- ISO 18562-1: Biocompatibility of breathing gas pathways
- ISO 20417: Information to be supplied by the manufacturer
- ISO 21029-1 & 21029-2: Design and operational requirements for cryogenic vessels
- ISO 23208: Cleanliness for cryogenic service
- IEC 60601-1: General requirements for medical electrical equipment
- ISO 80601-2-67: Requirements for oxygen conserving equipment
For requirements specific to portable units, see ISO 18777-2. For fire safety devices, ISO 19211 may also be relevant.
ISO 18777-1:2026 supports safe, effective, and standardized deployment of medical oxygen delivery systems globally, playing a crucial role in home respiratory care and medical device manufacturing.
Open preview (PDF)Transportable liquid oxygen systems for medical use — Part 1: Common requirements and particular requirements for base units