The market taxonomy by type distinguishes five principal configurations that together shape the product portfolio. Closed‑system bags, comprising roughly 45 % of unit shipments, integrate a sealed reservoir with a one‑way valve, minimizing contamination risk and supporting higher negative‑pressure levels; their premium pricing lifts average revenue per unit. Open‑system designs account for about 25 % of volume, favored in low‑resource settings where simplicity and lower cost outweigh strict sterility requirements. Portable units, representing 15 % of sales, combine lightweight materials with battery‑operated pumps, addressing ambulatory care and home‑based wound management, a segment expanding with aging demographics. Large‑volume bags, used primarily in extensive thoracic or abdominal procedures, contribute 10 % of market value despite lower unit counts because of higher material and compliance costs. Small‑volume bags, optimized for minor surgical sites, occupy the remaining 5 % but benefit from high turnover rates in outpatient clinics. The aggregate effect of these sub‑segments defines the overall market size, as each type’s price point and adoption rate feed into total revenue calculations.