本文件规定了拟与麻醉呼吸系统、呼吸机呼吸系统、加湿器或喷雾器一起使用的呼吸装置和呼吸管的最低要求。它适用于已经组装好的呼吸装置、呼吸管和患者端适配器，以及作为部件提供并按照制造商的说明组装的适配器。 本文件适用于包括患者端和机器端之间的特殊部件（如脱水器）的呼吸装置。 提供了适用于与患者端适配器一起使用的同轴和相关的分叉、双腔或多腔呼吸装置和呼吸管。

This document specifies minimum requirements for breathing sets and breathing tubes intended to be used with anaesthetic breathing systems, ventilator breathing systems, humidifiers or nebulizers. It applies to breathing sets and breathing tubes and patient end adaptors supplied already assembled and to those supplied as components and assembled in accordance with the manufacturer’s instructions. This document is applicable to breathing sets which include special components (e.g. water traps) between the patient end and machine end. Provision is made for coaxial and related bifurcated, double-lumen, or multiple-lumen breathing sets and breathing tubes suitable for use with patient end adaptors.