Have you ever considered how an iron lung keeps someone alive?
You might have seen videos of Paul Alexander, who lived in one of these devices for 71 years!! Butt he wasn’t the only one.
This device saved countless patients whose breathing muscles were paralyzed due to severe polio infections.
The mechanism behind it is quite ingenious.
The patient would lie inside a large metal cylinder that covered their chest, with their head protruding through a flexible, airtight seal.
A piston within the machine would continuously raise and lower the air pressure inside, causing the chest to expand and contract, which effectively stimulates natural breathing.
