Cerebral stent

A cerebral implantable endoluminal prosthesis for use in the treatment of cerebral aneurysm involving branches, the prosthesis having a multilayer configuration comprising:

• at least one self-expandable braided framework extending along an axis configured to expand from a radially compressed state in a delivery configuration to a radially expanded state;
• the self-expandable braided framework being formed by wires and devoid of any impermeable cover layer;
• wherein the self-expandable braided framework comprises a plurality of layers of wires made of biocompatible material, and forms a wall of the endoluminal prosthesis, each of the layers of wires forming a mesh, the meshes forming a lattice with a plurality of the wires of the layers, the meshes being interlocked, the wires being integrated in the mesh of at least one adjacent layer;
• wherein the plurality of layers of wires includes an intermediate layer located between an innermost layer and an outermost layer;
• wherein the self-expandable braided framework further comprises a lumen in a cylindrical form having a circular cross-section, an axis, and a constant diameter;
• wherein a number of wires crossing a line parallel to the lumen axis in a given layer is higher in the outermost layer than in the innermost layer;
• and
• wherein the number of wires in the intermediate layer is comprised between the number of wires in the outermost layer and the number of wires in the innermost layer.