The market also stratifies by device type, which influences design, pricing, and adoption dynamics. Spirometry‑based monitors capture flow‑volume curves to assess lung function and dominate the chronic disease management niche; their accuracy and regulatory clearance make them a core revenue generator. Capnography‑based units measure end‑tidal CO₂, providing real‑time ventilation status essential for procedural sedation and post‑operative care, thereby occupying a high‑margin, specialist segment. Pulse oximetry‑integrated devices combine SpO₂ and heart‑rate sensing, offering a low‑cost, multipurpose solution favored in home‑care and telehealth programs. Multi‑parameter platforms merge spirometry, capnography, and oximetry into a single handheld unit, targeting hospitals that seek workflow consolidation, albeit at a premium price point. Wearable patches represent an emerging sub‑type, leveraging flexible sensors for continuous, unobtrusive monitoring, and are projected to expand as data‑analytics ecosystems mature. Each type contributes uniquely to the overall market volume, with spirometry and pulse‑oxymetry together accounting for roughly 70 % of unit shipments.