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In France, the annual incidence of cerebro vascular accident (CVA) is from 1.6 to 2.4 per thousand (1.000) people, between 100.000 and 145.000 per year, with a mortality of 15 to 20% after the first month and 75% of survivors with sequelae. The treatment of choice is theTrombolysis IV (Intra Ven) with rt-PA (Recombinant Tissue Plasminogen Activator- Recombinant Tissue Plasminogen Activator) Which has a window of effectiveness of 4.5 after the onset of symptoms. Only 2% of the patients elegible for this treatment benefit from fibrinolysis intravenously. Occlusions caliber arteries are responsible for 46% of Ischemic Stroke (ACVI) and predict an excess mortality and severe functional disability at 6 months. In the absence of revascularizacion, half of the anterior circulation ACVI with documented arterial occlusion died and only 10% of them have a good functional outcome at three month. Some variables that have been idenrified as predictors of a poor prognosis include a clinical scores on the NIHSS (National Institute of Health Stroke Scale- Scale Stroke of the National Institutes of Health) greater than 12 as Fischer 2005, a documented occlusion intracranial artery, failues and contraindications of intravenous fibrinolysis among others. This review presents the mechanisms, assessment, efficacy and complications reported by the literature on mechanical thrombectomy. [ABSTRACT FROM AUTHOR]