Paul Alexander spent 70 years in an iron lung. He passed away at 78. He was a Dallas lawyer, polio research advocate, and author.

An iron lung also known as a negative pressure ventilator, works by creating a vacuum around the patient's chest, which causes the chest to expand, allowing the lungs to fill with air.

When the pressure is released, the chest contracts thus exhalation.

This process helped him breathe!🫁

Polio is caused by the poliovirus and is a severe infectious disease leading to motor paralysis and breathing difficulties.

John Haven Emerson created the Emerson Respirator in 1931.