The market taxonomy by application separates Medical Hydrogen Gas Generators into Therapeutic Use, Research & Development, and Clinical Diagnostics. Therapeutic Use, encompassing wound healing, anti‑inflammatory treatments and metabolic therapy, represents the largest revenue slice, estimated at 55 % of total market value. Its prominence is driven by clinical trials demonstrating accelerated tissue regeneration and the growing adoption of hydrogen inhalation protocols in hospitals. Research & Development applications, which include laboratory‑scale hydrogen generation for cellular studies and material testing, account for roughly 30 % of sales; this segment benefits from sustained funding in biomedical research and the need for on‑site high‑purity hydrogen to avoid contamination. Clinical Diagnostics, such as hydrogen‑based breath tests for gastrointestinal disorders, contribute the remaining 15 % and are expanding as non‑invasive diagnostic techniques gain regulatory acceptance. The proportional revenue distribution reflects differing capital intensity, usage frequency, and regulatory pathways, providing a clear framework for forecasting demand across the three application clusters.