ISO 21969:2009适用于在15°C下与标称填充压力高达25 000 kPa的气瓶或气瓶管束连接的高压柔性连接，用于以下医用气体: 氧气； 一氧化二氮； 呼吸用空气； 氦； 二氧化碳； 氙； 上述气体的混合物； 用于驱动手术工具的空气； 用于驱动手术工具的氮气； 富氧空气。 ISO 21969:2009适用于用于将符合ISO 7396-1的医用气体管道系统供应源内的气瓶或气瓶束连接到歧管的高压柔性连接。 ISO 21969:2009适用于用于将钢瓶连接到医疗设备（如麻醉工作站或肺呼吸机）入口的高压柔性连接，该设备配有符合ISO 10524-1的整体压力调节器。

ISO 21969:2009 applies to high-pressure flexible connections intended to be connected to cylinders or cylinder bundles with nominal filling pressures up to 25 000 kPa at 15 °C for use with the following medical gases:

• oxygen;
• nitrous oxide;
• air for breathing;
• helium;
• carbon dioxide;
• xenon;
• mixtures of the gases listed above;
• air for driving surgical tools;
• nitrogen for driving surgical tools;
• oxygen-enriched air.

ISO 21969:2009 applies to high-pressure flexible connections intended to connect cylinders or cylinder bundles to manifolds within sources of supply of medical gas pipeline systems complying with ISO 7396-1. ISO 21969:2009 applies to high-pressure flexible connections intended to connect a cylinder to an inlet port of medical equipment (e.g. anaesthetic workstation or lung ventilator) fitted with an integral pressure regulator complying with ISO 10524-1.