The Iron Lung | Science Museum
The iron lung was large, cumbersome and very expensive, but it saved the lives of thousands of polio victims.
www.sciencemuseum.org.ukHere’s the latest on iron lungs based on recent reporting and reputable sources.
What an iron lung is
- An iron lung is a large negative-pressure ventilator historically used to treat polio patients whose chest muscles were too weak to breathe on their own. It works by enclosing the body in a sealed chamber and cycling air pressure to simulate breathing. Contemporary devices mostly use positive-pressure ventilators, but a few iron lungs remain in museum collections or personal use in rare cases.[1][3]
Current status and people still using iron lungs
- As of the early 2020s, iron lungs had become largely obsolete, with most polio survivors moving to modern ventilators or losing access as medical practices evolved. There have been a few high-profile reports of individuals who continued to rely on iron lungs into the 2020s, notably Martha Lillard in the United States, who was reported as one of the last ongoing users. These cases highlight the extreme longevity and unique needs of some polio survivors, as well as concerns about maintenance and parts availability. However, such cases are exceedingly rare today.[2][1]
Response to COVID-19 and new developments
- The COVID-19 pandemic sparked renewed interest in simple, low-tech ventilation solutions to address supply shortages, including prototypes inspired by iron lungs. Several groups explored or developed readily producible or low-cost variants to supplement scarce modern ventilators, particularly in resource-constrained settings. These efforts were not widespread replacements for modern devices but part of broader emergency-response discussions.[1]
Historical and educational context
- Museums and medical institutions have highlighted the iron lung's historical role in saving lives during polio outbreaks, while also noting its limitations—restrictiveness, infection control challenges, and the need for ongoing care. Modern teaching collections sometimes feature operational iron lungs to illustrate the evolution of respiratory support technology and patient care practices.[3][6]
Recent coverage you might find useful
- In 2021, media profiles of individuals who historically relied on iron lungs underscored concerns about future accessibility to replacement parts and long-term viability of such devices, reinforcing why modern ventilation approaches became standard practice. These pieces help frame why iron lungs have become largely a historical artifact rather than a current primary treatment.[2]
- A notable recent development is the continued documentation of “the last users” and archival interest in iron lungs within hospital settings and museums, reflecting ongoing curiosity about how far respiratory care has come since the polio era.[5][6]
Illustration (example)
- A concise way to picture the shift: imagine the iron lung as a cell-like chamber surrounding the chest, versus today’s portable, compact machines that deliver air directly into the airway with targeted pressures. This contrast highlights both the dramatic evolution in patient mobility and in the complexity of respiratory support technology.[7][3]
If you’d like, I can pull specific articles or create a brief timeline of key milestones and people connected to iron lungs, and include a small annotated bibliography with direct citations.