Instrument to aid surgery of those used for intervention in the interior parts of human organs, such as hysteroscopes, fetoscopes, nephroscopes or the like connected to laser generators, said cystoscopes hysteroscopes (10) at the front a substantially tubular longitudinal body (16) within which at least one working channel (17) is formed to selectively introduce fiber optic cables with different purposes, as well as various tools for the practice of surgery inside the areas of the human body to be treated, an optic (11) with lighting means can be incorporated in the proximal end of the working channel (17), and a secondary channel for the optics can also be incorporated in the tubular longitudinal body (16) to which it can incorporate a rubber (21), followed by means to facilitate the entry and subsequent exit in the area to be treated with liquid s, characterized in that an optical fiber cable (19) is incorporated into said working channel (17), and at its distal end (24) that of said optical fiber cable (19) a cannula (23) on the fiber optic cable (19) adapted to protect said cable (19) and force it to bend at its distal end (24). (Machine-translation by Google Translate, not legally binding)1. Instrumento de ayuda a la cirugía de los utilizados para la intervención en las partes interiores de los órganos humanos, tales como los citoscopios histeroscopios, fetoscopios, nefroscopios o similares conectados a generadores láser, comprendiendo dichos citoscopios histeroscopios (10) en su parte delantera un cuerpo longitudinal sensiblemente tubular (16) dentro del cual se forma como mínimo un canal de trabajo (17) para introducir de forma selectiva cables de fibra óptica con distintas finalidades, así como útiles diversos para la práctica de cirugía en el interior de las zonas del cuerpo humano a tratar, pudiéndose incorporar en el extremo proximal del canal de trabajo (17) una óptica (11) con unos medios de iluminación, y pudiendo incorporar también en el cuerpo longit
