A luminal stent (2) comprises a first tubular body (21) and a second tubular body (22) sleeved on the first tubular body (21), and at least one end of the second tubular body (22) is sealingly connected to an outer surface of the first tubular body (21). In a radial support section of the luminal stent (2), the first tubular body (21) comprises at least one first radial support structure (211) arranged in a circumferential direction thereof, and the second tubular body (22) comprises at least one second radial support structure (221) arranged in a circumferential direction thereof and a coating film (222) covering the second radial support structure (221). The second radial support structure (221) has greater radial deformability than the first radial support structure (211). After implanted, the luminal stent can form a semi-closed gap between the first tubular body and the second tubular body or between the second tubular body and a lumen wall, and blood flowing into the gap can be employed as a filler material to plug a type I endoleak channel, thus preventing blood from flowing in an aneurysm body or a dissection location.L'invention concerne un stent luminal (2) qui comprend un premier corps tubulaire (21) et un second corps tubulaire (22) emmanché sur le premier corps tubulaire (21), et au moins une extrémité du second corps tubulaire (22) est reliée de manière étanche à une surface externe du premier corps tubulaire (21). Dans une section de support radial du stent luminal (2), le premier corps tubulaire (21) comprend au moins une première structure de support radial (211) disposée dans une direction circonférentielle de ce dernier, et le second corps tubulaire (22) comprend au moins une seconde structure de support radial (221) disposée dans une direction circonférentielle de ce dernier et un film de revêtement (222) recouvrant la seconde structure de support radial (221). La seconde structure de support radial (221) a une déformabilité radiale supérieure à
