In the Aortic Covered Stent segmentation by type, devices are classified according to the covering material and structural design, each influencing clinical performance and pricing. Polytetrafluoroethylene (PTFE)‑covered stents dominate the market, representing roughly 55 % of unit sales, because PTFE offers superior impermeability and flexibility that suit both thoracic and abdominal anatomies. Dacron‑covered stents hold an estimated 25 % share; their woven polyester fabric provides robust mechanical strength but is less conformable, limiting use to larger‑diameter aortas. Biodegradable polymer‑covered stents are an emerging niche, accounting for about 12 % of sales; their resorbable matrix aims to reduce long‑term foreign‑body response, attracting early adopters in high‑risk patient cohorts. Drug‑eluting covered stents comprise the remaining 8 %, combining antiproliferative drug release with a barrier layer to mitigate restenosis in complex dissections. The distribution of these types reflects a trade‑off between material cost, procedural complexity, and clinical outcomes, thereby shaping the overall market valuation.