Rotorcraft

Recently, I've been working with aircraft first aid kits, and there's something I'm stuck on. I've consulted several medical professionals who work with us, but none can provide a clear answer. It's regarding the Bag Valve Mask mentioned in AMC2 SPO.IDE.H.165 (b)(3)(vi) . While I believe I'm close to understanding what it might be, I'm curious if anyone has more specific or detailed information on how the European agency defines or uses this term. Does it have a particular context within the European Union?

Any help or reference would be greatly appreciated.

Thank you in advance for your time and assistance!

Regards