Puborectalis-simulated type dual-ring artificial anal sphincter prosthesis

The invention provides a puborectalis-simulated type dual-ring artificial anal sphincter prosthesis which comprises an upper fixing ring, a lower fixing ring, a connecting support, a power unit, a speed reduction gear box and a movable semi-ring, wherein the upper fixing ring and the lower fixing ring are arranged in parallel, implanted into the periphery of the intestinal tract of a patient to be fixed and arranged at the two ends of the connecting support respectively, the middle of the connecting support is connected with the movable semi-ring, the power unit and the speed reduction gear box are both integrated with the connecting support, and the power unit controls the movable semi-ring through the speed reduction gear box, so that the movable semi-ring moves towards a center hole of the upper fixing ring and a center hole of the lower fixing ring or in the circumferential direction of the upper fixing ring and the lower fixing ring. The puborectalis-simulated type dual-ring artificial anal sphincter prosthesis is small in size, light in weight and capable of increasing the success rate of prosthesis implantation.