Electric pulse ablatograph for endoscope

An electric pulse ablatograph for an endoscope, comprising:

• an electrode assembly comprising a central electrode and a cylindrical electrode and configured to pass through a working channel of the endoscope into a body and transmit a pulse to tissues in use;
• a pulse waveform generator coupled to the electrode assembly and configured to transmit pulse voltage to the electrode assembly;
• an electrode driving device configured to drive the central electrode and the cylindrical electrode;
• a parameter input device configured to configure coordinate information of an ablation region;
• and
• a control device in signal connection with the parameter input device and in control connection with the electrode driving device, wherein the control device respectively controls the displacement of the central electrode and cylindrical electrode according to preset coordinate information through the electrode driving device;
• when a discharging end of the electrode assembly reaches a preset position, the control device controls the pulse waveform generator to be connected with the electrode assembly;
• when the electrode assembly is connected with the pulse waveform generator, an ablation electric field is generated between the discharging end of the central electrode and the cylindrical electrode, and the size or radius of the ablation electric field is positively correlated to the distance between the discharging end of the central electrode and the cylindrical electrode;
• the ablation electric field forms the ablation region after moving according to a preset path, and the ablation region is elliptical;
• the electrode assembly is a layered structure, an outer side of the central electrode is plated with an insulating layer, and the part of the central electrode covered with the insulating layer is exposed out of the cylindrical electrode;
• the central electrode is retractably provided in the cylindrical electrode, and the cylindrical electrode is retractably provided in an outer sheath tube-;
• the electrode driving device comprises a fixed part and a displacement part capable of producing a relative displacement, a first electric actuator provided on the fixed part and configured to drive the cylindrical electrode, and a second electric actuator provided on the displacement part and configured to drive the central electrode;
• the control device adjusts the size of the ablation electric field by changing the displacement difference between the cylindrical electrode- and the central electrode.