Stroke is commonly known as stroke, also known as cerebrovascular accident. Stroke includes cerebral hemorrhage, subarachnoid hemorrhage, cerebral infarction, cerebral embolism, cerebral thrombosis, cerebral embolic hemiplegia, thrombotic hemiplegia, cerebrovascular disease sequelae, cerebellar hemorrhage, lacunar cerebral infarction, ruptured internal carotid aneurysm into the brain, hypoxic encephalopathy (pulmonary encephalopathy), etc. etc. Any disease that causes obstruction or rupture of a cerebral blood vessel, resulting in impaired cerebral blood circulation and damage to brain tissue or structure, can be called a stroke. Therefore, strokes can be broadly classified into two categories, namely ischemic strokes and hemorrhagic strokes, which in this case generally refers to ischemia or hemorrhage of the cerebral arterial system. Ischemic strokes account for 60-70% of all stroke patients and mainly include cerebral thrombosis and cerebral embolism. The former is caused by a narrowing of the artery and the gradual formation of a thrombus in the lumen that eventually blocks the artery, while the latter is caused by a dislodged thrombus or other emboli entering the bloodstream and blocking the cerebral artery. For example, in some patients with heart disease, the dislodgement of emboli in the heart lumen can cause cerebral embolism. Whether it is cerebral thrombosis or cerebral embolism can be collectively referred to as cerebral infarction. In addition, a small percentage of patients with ischemic strokes are caused by the gradual narrowing and eventual occlusion of small cerebral arteries, with no thrombus or embolus in the lumen, which is also called cerebral infarction. In addition, there are some patients who do not have a real blockage of the cerebral blood vessels, but only temporary ischemia, which can also cause symptoms of transient brain damage, called transient ischemic attack, commonly known as “mini-stroke” or “mini-stroke”.