A device (30) for positioning in a blood vessel (13) for treating an aneurysm (10), said tubular device and including a plurality of twisted strands (31, 32) helically wound to form a lattice structure (33 ), said tape strands with a rectangular cross section or cables with circular cross section, each strand formed of a material biocompatible metal being, and said strand comprising an inner surface (24), an outer surface (21) for positioning adjacent one inner wall (15) of a vessel, forming said outer surface portion of an outer circumference of said device between first and second ends of said device, and a plurality of apertures (23) extending between said inner and outer surfaces, characterized that said outer surface of said strands comprises between about 20 percent to about 50 percent of a to circumferential area total of said device, and the device is configured to deviate 90 degrees from a longitudinal axis of the device, upon application of a bending moment of 0.0006 Nm to the device at a distance of 12.7 mm (0 , 5 ") of a fulcrum of a cantilever by the device and to be compressed to 50% of an original diameter of the device upon application of a force of less than 0.098 N, when the device is fully deployed from catheter administration.Un dispositivo (30) para su posicionamiento en un vaso sanguíneo (13) para el tratamiento de una aneurisma (10), siendo dicho dispositivo tubular e incluyendo una pluralidad de hebras trenzadas (31, 32) enrolladas helicoidalmente para formar una estructura reticular (33), siendo dichas hebras cintas con una sección transversal rectangular o cables con sección transversal circular, estando cada hebra formada de un material de metal biocompatible, y comprendiendo dicha hebra una superficie interna (24), una superficie externa (21) para colocar adyacente una pared interna (15) de un vaso, formando dicha superficie externa una porción de una circunferencia externa de dicho dispositivo entre primer y segundo extremos de dicho dis
