Device for cutting and aspiration of tissue from the human or animal body, preferably for use in ophthalmology, in particular vitrectomy, retinal peeling, etc., with an outer tube (1) and an inner tube (11) that can be moved alternately in the outer tube (1) concentrically with a small set, the outer tube (1) being closed at the free end (2) and presenting near the free end (2) a first and a second lateral hole (3, 4 ) with respectively at least one inner cutting edge (7, 8), the inner tube (11) being open at the free end and presenting there an outer cutting edge (12), the inner tube (11) being presented near the end free at least one lateral hole (13) with at least one other outer cutting edge (14) and the cutting edges (7, 8, 12, 14) of the outer tube (11) and the inner tube (1) interact during the displacement of the inner tube (11) to produce the cut, characterized in that the first and the second hole (3, 4) are configured respectively as an asymmetric circle, asymmetric ellipse or as asymmetric oval and because a fine rib (6) is configured by means of the asymmetric zone (5) of the first and second holes (3, 4 ) on the outer tube (1).Dispositivo para el corte y la aspiración de tejido del cuerpo humano o animal, preferentemente para el uso en oftalmología, en particular la vitrectomía, el peeling retinal, etc., con un tubo exterior (1) y un tubo interior (11) desplazable de manera alterna en el tubo exterior (1) concéntricamente con un pequeño juego, estando cerrado el tubo exterior (1) en el extremo libre (2) y presentando cerca del extremo libre (2) un primer y un segundo orificio lateral (3, 4) con respectivamente al menos una arista de corte interior (7, 8), estando abierto el tubo interior (11) en el extremo libre y presentando allí una arista de corte exterior (12), presentado el tubo interior (11) cerca del extremo libre al menos un orificio lateral (13) con al menos otra arista de corte exterior (14) e interactuando las aristas de corte (7, 8, 12, 14)
