The Emergency Ventilator ecosystem spans upstream component supply, midstream device assembly and integration, and downstream distribution and clinical adoption. Upstream, raw‑material and precision‑component suppliers provide the regulated parts that enable OEM manufacturers to produce certified ventilator units. Midstream actors—technology providers and system integrators—embed control algorithms, sensor arrays, and workflow‑specific interfaces, turning hardware into a functional life‑support solution. Downstream, distributors and service providers move the finished systems to hospitals, field clinics, and emergency response units, while ensuring installation, training, and ongoing maintenance. Value is created through the convergence of compliant hardware, software intelligence, and rapid logistics, and captured by manufacturers, integrators, and service firms that monetize certification, customization, and support contracts. This value chain analysis delineates the primary flows of material, information, and service within the market.