In the Types dimension, the market is stratified by material composition and structural design, each influencing both cost structure and adoption rate. The dominant double‑J (DJ) stent, a polymeric device with a proximal and distal curl, captures roughly 55 % of unit shipments due to its versatility and established clinical track record. Metallic stents, comprising shape‑memory alloys, hold about 15 % of the market, favored in cases demanding extended indwelling times and superior radial strength. Biodegradable stents, engineered to resorb after a predefined period, represent an emerging niche at 10 %, driven by patient‑centric demand for reduced removal procedures. Pigtail and segmental designs together occupy the remaining 20 %, serving specialized anatomies and short‑term interventions. By quantifying each subtype’s share, analysts can map the market taxonomy, assess pricing elasticity, and forecast shifts as clinical guidelines evolve.