Electrode assembly, hemostatic instrument and hemostatic system

The invention belongs to the technical field of medical instruments, and relates to an electrode assembly, a hemostasis instrument and a hemostasis system, the electrode assembly comprises at least two electrode needles, each electrode needle comprises an inner tube, a flow inlet channel is formed in the inner tube, a plurality of sequentially arranged point positions are arranged in the axial direction of the inner tube, and at least one point position is provided with a backflow port; the outer tube is arranged outside the inner tube in a sleeving manner and is smoothly connected with the exposed far end of the inner tube; a backflow channel communicated with the inflow channel through the backflow opening is formed between the outer pipe and the inner pipe. The sum of the opening sectional areas of the backflow ports is smaller than or equal to the opening sectional area of the inflow channel; and in a working state, the reflux inlet is used as a temperature difference demarcation point of segmented temper