Overview
ISO 5361:2023 - Anaesthetic and respiratory equipment - Tracheal tubes and connectors defines safety and essential performance requirements for oro‑tracheal and naso‑tracheal tubes and their connectors. The fourth edition updates design guidance (notably for paediatric and neonatal tubes), aligns with ISO 18190 (general airway requirements), and clarifies requirements for specialty tracheal tubes (preformed, reinforced, tapered, with suction/monitoring channels, etc.). The standard excludes tracheostomy, tracheobronchial/endobronchial tubes and supralaryngeal airways, as well as devices intended for use with lasers, electrosurgery or flammable anaesthetic agents.
Key Topics and Technical Requirements
ISO 5361:2023 addresses both design and testing aspects to ensure basic safety and essential performance, including:
- Materials and biocompatibility: requirements and biological safety testing aligned with breathing‑gas pathway standards.
- Design requirements: sizing, dimensions, curvature, surface finish, and clear guidance for paediatric and neonatal designs.
- Cuff systems: cuff designs, inflatable systems, test methods for cuff performance, collapse and herniation.
- Connectors and interfaces: machine‑end connector design and compatibility with anaesthetic/ventilator systems.
- Radiopacity and marking: radiopaque markers and durable markings to aid placement verification and traceability.
- Kink resistance and mechanical performance: test methods to confirm lumen patency under bending.
- Additional device types: requirements for tubes with Murphy eyes, shoulders (Cole‑type), reinforced walls, and channels for suction, monitoring or drug delivery.
- Packaging, sterility and labelling: sterile packaging requirements, manufacturer instructions for use, and mandatory markings.
- Risk management and rationale: annexes include informative rationale, design guidance and hazard identification for risk assessment.
- Normative test methods: multiple annexes define test procedures (cuff diameter, collapse, herniation, tracheal seal, kink resistance, etc.).
Practical Applications
ISO 5361 is used to:
- Guide design and manufacture of clinical tracheal tubes and connectors for anaesthesia and critical care.
- Establish product specifications and quality control protocols in production and testing laboratories.
- Support regulatory submissions and compliance demonstrations for medical device approvals.
- Inform procurement decisions and clinical selection of tubes (adult, paediatric, neonatal, specialty tubes).
- Underpin risk management and clinical safety assessments in hospitals and device makers.
Who Should Use This Standard
- Medical device manufacturers (design, R&D, QA/RA)
- Test laboratories and conformity assessment bodies
- Regulatory affairs professionals and notified bodies
- Clinicians, anesthetists and biomedical engineers involved in airway device selection and safety reviews
- Procurement teams specifying tracheal tube performance and compatibility
Related Standards
Keywords: ISO 5361, tracheal tubes, tracheal tube connectors, anaesthetic respiratory equipment, cuffed tracheal tubes, paediatric tracheal tubes, medical device standards.