EVS-EN ISO 17256:2026

This document specifies requirements for the respiratory tubing and connectors used to convey respirable gases to a patient in the healthcare and homecare environments and provide a safe connection between the gas supply device and the patient interface. Respiratory tubing and connectors are mainly used for delivery of oxygen but can also be used for respirable air or oxygen/air mixtures and breathable medicinal gas mixtures such as oxygen/nitrous oxide or oxygen/helium mixtures. This document also specifies requirements for respiratory therapy extension tubing.
NOTE 1        The gas supply devices referred to in this document do not include anaesthetic machines/workstations and ventilators.
NOTE 2        This document does not cover breathing tubes for breathing systems. These are specified in ISO 5367.
This document is written following the format of ISO 18190, General standard for airways and related equipment. The requirements in this device-specific standard take precedence over any conflicting requirements in the General standard