Arterial (atherosclerotic) stenosis or occlusion angioplasty: Peripheral arterial blockage is a common disease in the elderly, mostly in patients with smoking, diabetes and hypertension. Common symptoms include numbness in the lower limbs, intermittent limb pain, twitching, and cold legs and feet, etc. Because the initial symptoms are not obvious, treatment is often delayed as a problem that occurs with old age, and if it develops into foot ulceration or necrosis, according to the traditional If it develops into foot ulcer or necrosis, most of them will be amputated according to the traditional method, and about half of the patients will die within 5 years. Since February of this year, Fengxian District Central Hospital has been performing minimally invasive vascular interventions, which can greatly reduce the risk of amputation or death.