Catheter assembly (200) comprising: a catheter having a front end and a rear end and comprising a main light (202) extending between the front end and the rear end； an expandable device (206) located at the front end of the catheter, the expandable device (206) having a folded configuration for the endoluminal supply of the expandable device to a treatment site and an expanded configuration having a diameter greater than the diameter of the folded configuration； a primary sleeve (208) circumferentially wrapped around the expandable device (206), wherein the primary sleeve (208) comprises a sheet of material having first and second main surfaces and a plurality of openings extending from the first surface main to the second main surface； and a primary coupling element (234) that cooperates with the openings to releasably engage parts of the sheet with each other to limit the expandable device (206) to the folded configuration； and at least one direction line (220) extending through the main light (202) of the catheter and at least disposed between the expandable device (206) and the primary sleeve (208) to allow selective flexion of the expandable device (206) and the non-concentric coupling of the expandable implant (206) with respect to the catheter； and further comprising a secondary sleeve (204) and a secondary coupling element (224), in which the secondary sleeve limits the expansion of the expandable device to an intermediate configuration having a diameter greater than the diameter of the folded configuration and smaller than the diameter of the expanded configuration.Conjunto de catéter (200) que comprende: un catéter que tiene un extremo delantero y un extremo posterior y que comprende una luz principal (202) que se extiende entre el extremo delantero y el extremo posterior； un dispositivo expandible (206) situado en el extremo delantero del catéter, teniendo el dispositivo expandible (206) una configuración plegada para el suministro endoluminal del disposi
