In September 2009, a 70-year-old male patient Yang, who lived in Pudong, came to the specialist clinic of Dr. Jieqing Wan, deputy chief of neurosurgery, complaining of hypertension and diabetes mellitus for many years and recurrent small strokes such as left-sided limb weakness in the past year, with multiple scattered foci of cerebral infarction on head CT. Carotid ultrasound showed significant severe stenosis of the atherosclerotic plaque in the right carotid artery. Director Wan then admitted the patient to the hospital and performed DSA cerebral angiography, which confirmed that the right carotid artery was more than 90% blocked and there was ulcer formation on the surface of the plaque. The cause of the mini-stroke was due to the small emboli that kept coming off the surface of the plaque. If the plaque surface thrombosis formed the whole blood vessel would be completely occluded and a large brain infarction would occur. Fortunately, the neurosurgeon performed a “carotid endarterectomy” to remove the plaque and the embolus together! A major illness was avoided, with unimaginable sequelae! Carotid endarterectomy, also known as carotid endarterectomy, is a vascular neurosurgical procedure performed to prevent ischemic stroke. Carotid endarterectomy is the removal of thickened carotid intimal atherosclerotic plaque to prevent stroke due to plaque detachment. After the operation, the patient can effectively improve the blood supply to the brain and prevent stroke. In order to avoid temporary blockage of carotid blood flow during surgery, the hospital’s carotid endarterectomy research team has continued to specialize in research and technological innovation, in order to avoid temporary blockage of carotid blood flow causing cerebral ischemia, pre-place a diversion tube in the carotid artery and perform “no-flow” carotid endarterectomy, which can completely remove the plaque without blocking carotid blood flow. The operation time is short and the patient recovers quickly and can be discharged from the hospital in 3~5 days. It effectively reduces the complications of surgery and improves the quality of life of patients.