Stroke is the first leading cause of death and the leading cause of disability in China. Early vessel recanalization in acute ischemic stroke has been shown to strongly correlate with improved clinical outcome and reduced mortality. Mechanical thrombectomy devices were introduced in the late 1990s and the highly effective stent retriever was recently included. Stent retriever have recently been shown to be safe and effective up to 8 h after the onset of stroke symptoms. In addition to expanding the therapeutic time window for stroke treatment and broadening the treatment repertoire

mechanical approaches have been shown to produce higher recanalization rates than intravenous tissue plasminogen activator (tPA) or intra-arterial (IA) thrombolysis alone. The stent retriever seems to be the definitive first choice in the use of mechanical devices for intra-arterial recanalization treatment in acute ischemic stroke.