Abstract: An implantable endoluminal prosthesis for use in the treatment of aneurysm involving branches is described, where at least one self-expandable braided framework extending along an axis is able to expand from a radially compressed state in a delivery configuration to a radially expanded state. The self-expandable braided framework includes a plurality of layers of wires made of biocompatible material forming a lattice with a plurality of wires of said layers; the wires being integrated in the mesh of at least one of the adjacent layers; the self-expandable braided framework including a lumen in a cylindrical form; characterized in that, in radially expanded state, a ratio of a thickness of a wall of the implantable endoluminal prosthesis in the radially expanded state to the diameter of wire being greater than 3.0; and the surface coverage ratio (SCR) of the braided framework is at least 30% and at most 50%.