Stent conveying device and stent system

The embodiment of the utility model provides a stent delivery device and stent system.The stent delivery device comprises an outer tube, a supporting tube and a tail end connector which are sequentially connected, a mandrel tube is arranged in the outer tube and the supporting tube, a limiter is arranged at the far end of the mandrel tube and used for limiting the position of a stent, and the tail end connector is connected with the outer tube. The stent further comprises an unfolding wire, and the unfolding wire is arranged in the outer tube and the supporting tube and can reach the limiting stopper so that the far end of the stent can be limited to the position of the limiting stopper. The stent release device is simple in structure, easy to achieve, capable of achieving accurate release of the stent, capable of meeting the requirements of small and medium-sized lumen stent release force and the outer diameter of a conveying outer tube, capable of reducing access damage, safe and reliable, capable of effect