This work presents the design and development of a prototype for high-flow therapy devices, aiming to achieve performance comparable to commercial systems. The device focuses on delivering heated and humidified oxygen-enriched air, benefiting patients with respiratory conditions such as acute respiratory failure. By integrating additive manufacturing, the mechanical components, including a radial blower, were designed to optimize energy efficiency and reduce production costs. Instrumentation for controlling critical variables—temperature, humidity, and flow—was implemented through feedback systems to ensure precise regulation. The preliminary results demonstrate that the device can deliver a flow rate between 10.2 and 86.33 L/min, aligning with standard medical devices. Additionally, the humidification system reached relative humidity levels between 20% and 90%, while maintaining temperatures between 36 and 38 ℃. These findings highlight the potential of this prototype in improving respiratory therapies and resource optimization. Future developments include enhancing the oxygen blender system and implementing a more sophisticated control algorithm to better respond to patient-specific needs, further advancing the device's clinical applicability.