Lower extremity arterial occlusive disease (ASO) is a chronic arterial occlusion caused by atherosclerosis, a serious stage in the development of atherosclerotic disease of the lower extremities, mainly affecting the lower abdominal aorta, iliac artery, femoral artery, N artery and other large and medium-sized arteries, which can cause severe ischemic clinical manifestations, such as pain when walking, pale and cold affected limbs, loss of arterial pulsation, and if ischemic necrosis occurs in the distal part of the affected limb, it is necessary to If ischemic necrosis occurs in the distal part of the affected limb, the limb has to be amputated. According to statistics, the amputation rate of lower limb arteriosclerosis occlusive disease is 3% to 5%, and when combined with diabetes, the amputation rate can be as high as 20%. Once the arteries of the lower extremities are occluded, it is often impossible to “reopen” them with drugs alone. At this point, surgical treatment becomes the only option for many patients to avoid amputation. There are two main methods: traditional surgery (endarterectomy, arterial bypass, etc.) and endovascular treatment (balloon dilation, stenting, spinning, laser, cryo, internal irradiation, etc.). Unfortunately, however, all of the above methods have some problems, such as high trauma, poor results, postoperative restenosis, and difficulty in reoperation. In recent years, a new minimally invasive procedure, the peripheral plaque removal system, has been born, creating a new chapter in the treatment of lower extremity atherosclerotic occlusive disease. Its core device is a cutting assembly consisting of a rotating built-in blade housed in a tube sleeve. The device is located at the distal end of the catheter and is powered by an extracorporeal battery driver. Guided by x-ray fluoroscopy, the blade rotates and advances slowly through the lesion, “scraping” off the blocked artery and making the lumen clear through multiple iterations of excision. The scraped material is stored in a conical hollow tube (see figure), and when the hollow tube is full of “trash”, the doctor can remove the tube and clean out the “trash”.