Segmentation by types distinguishes three core configurations of medical negative ion oxygen generators, each influencing adoption patterns and cost structures. Portable units are lightweight, battery‑operated devices designed for bedside or home use; they capture roughly 55% of the market due to their flexibility, lower capital expense, and suitability for transient or ambulatory patients. Stationary systems are larger, grid‑connected installations intended for fixed clinical environments such as hospitals and dental clinics; they command about 35% of revenue, reflecting higher output capacity, advanced ion control, and integration with building‑level HVAC systems. Hybrid models combine portable modules with a central stationary core, enabling scalability and redundancy; they occupy the remaining 10%, appealing to facilities that require both high‑volume central supply and localized backup during power outages or peak demand. The relative weight of each type is shaped by regulatory compliance, infrastructure investment, and the specific therapeutic protocols of the target application segment.