A capsulotomy device for accessing a lens capsule through a cornea of one eye, including the device: a handpiece (5) having a tip (3) for introduction into an incision in the cornea of the eye； a sliding element (7) slidably arranged for translation within the handpiece； a suction cup (2) mounted on the sliding element for movement of entry and exit of the handpiece； a compression mechanism associated with the suction cup (2) and the handpiece (5) to compress the suction cup for deployment through the tip of the handpiece to an anterior chamber of the eye, the suction cup being configured to expand within the anterior chamber to a cutting position in the lens capsule； and a cutting element (50) mounted on the suction cup to cut a portion of the lens capsule, where the cutting element is an electrode, and also including one or more electrical elements to supply current to an electric cable connected to the electrode for heating the electrode to cleave the lens capsule portion； and where the electrode is mounted around a bottom side of the suction cup (2) and also includes a continuous element (54) along which current can flow in two opposite directions to conduct current uniformly around the portion of the tissue to be cut , characterized in that the electrode includes an upper ring that connects with the electric cable and a lower ring that connects with the upper ring in two positions on opposite sides of the lower ring, and where current can flow from the upper ring to the lower ring through one of the positions and then circulate around both sides of the lower ring to the position on the opposite side of the lower ring to evenly distribute the current around the lower ring that can contact the lens capsule.Un dispositivo de capsulotomía para acceder a una cápsula de cristalino a través de una córnea de un ojo, incluyendo el dispositivo: una pieza de mano (5) que tiene una punta (3) para introducción en una incisión en la córnea del ojo； un elemento deslizante (7)
