Abstract: Objective To evaluate the preliminary experience on new retractable self-expandable stent(LEO)for endovascular treatment of wide-necked intracranial aneurysms and its nature.Method 10 wide-necked intracranial aneurysms were embolized with LEO stent in combination with detachable coils.Six cases were treated by staged release of the LEO stent.Stent delivery cross the aneurismal neck after endovascular coiling of aneurysms was performed in 2 cases.In another two cases,aneurysms were coiled endovascularly after LEO stent release.The delivery system iS advanced inside the Vasco microcatheter.We could pull the catheter and the stent back until the distal end of the stent was precisely positioned.Results Nine aneurysms were all embolized completely with stent-coil technique.and 1 case was partially embolized.There was a thromboembolic event related to the deployment of the Leo stent in one patient with acute subarachnoid hemorrhage,which was cured without complications.The stent could be resheathed and repositioned if needed.Conclusions The Leo stent can be deployed accurately within the cerebral vasculature.It is a feasible,secure,and effective system on treating wide-necked intracranial aneurysms and in combination with coiling embolization offers a promising therapeutic alternative in the treatment of widenecked aneurysms.