For many, the image of medical oxygen is a steel cylinder beside a hospital bed. That cylinder represents a century of medical progress. Today, on the front lines of healthcare, from a regional hospital in Liberia to a rural clinic in Bangladesh, a technological revolution is building upon that legacy. A new generation of innovation is tackling the most persistent challenges in oxygen access: unreliable power, vast distances, and long-term maintenance. The global health community now understands that building resilient oxygen ecosystems is fundamental to health