Ablation catheter

The present disclosure provides an ablation catheter. The ablation catheter comprises a long and thin strip-shaped body, wherein the long and thin strip-shaped body comprises a far-end section capable of extending into a blood vessel inner cavity; the ablation electrode is arranged to surround the far-end section in the axial direction of the far-end section of the long and thin strip-shaped body, and the ablation electrode is constructed to be provided with two ends of an elastic structure and a middle section connected with the two ends of the ablation electrode through a spiral structure; the perfusate flowing-out hole is formed in the surface of the long and thin strip-shaped body. Compared with ultrasonic ablation equipment, the ablation catheter has the advantages of being mature in technology, lower in cost and higher in energy conversion efficiency, the ablation catheter can evenly emit radio frequency energy in the circumferential direction, strong directivity is not needed, compared with glue connec