ISO 15001:2011: Disposable Oxygen delivery equipment made from PVC & other plastics

I am curious about the role of disposable oxygen delivery equipment which is commonly made from PVC and other plastics and how they speak to ISO 15001:2011. I understand the rationale of how ISO 15001:2011 applies to devices and equipment that channel oxygen, especially in relation to anaesthetic gases, however because common oxygen masks and cannulae are extremely low cost commodities, they are commonly made of materials that can ignite when being used and come into contact with a flame (think home care oxygen patients who insist on smoking). Any feedback would be appreciated.