Acandis Credo Intracranial Stent for Unsuccessful Recanalization After Thrombectomy (ACUTE)

Inclusion Criteria: * Acute ischemic stroke from large vessel occlusion (LVO) * Failed recanalization after treatment with thrombectomy, i.e. persistent occlusion of intracranial internal carotid artery (ICA), proximal segment (M1, M2) of the middle cerebral artery (MCA) (TICI 0-1) * Small to moderate infarct core prior to initiation of thrombectomy (CT ASPECTS 6-10, DWI lesion \< 70 ml) * Suspected underlying stenosis of the occluded artery amenable to stenting by judgement of the treating neurointerventionalist * Age 18- 80 years * Informed consent (see below) * Decision to perform angioplasty and stenting \< 12 hours of symptom onset * Previous passage of occlusion with microcatheter obtained Exclusion Criteria: * Large infarct core prior to initiation of thrombectomy (CT ASPECTS 0-5, DWI lesion \> 70 ml) * Vessel occlusion or stenosis of different known or suspected cause than atherosclerosis (e.g. vasculitis) * Pre-stroke disability (MRS \> 2) * Any sign of intracranial haemorrhage on brain imaging prior to thrombectomy * Any sign of intracranial vessel perforation during thrombectomy * Contraindication against treatment with double anti-platelet treatment * Current effective use of oral anticoagulants (e.g. INR \> 1.7 for Vitamin K antagonists) * More than 3 attempts for recanalization of target lesion prior to the use of the study device. * Stenosis longer than the working length of the NeuroSpeed PTA balloon catheter. * Diameter of the healthy vessel proximal and distal to the stenosis prevents save treatment with the NeuroSpeed PTA balloon catheter or is outside the indicated range of the Credo stent. * Diameter of the target area is outside the indicated range of the Credo stent after predilation. * Contraindication against anti-platelet or anticoagulation therapy * Heavily calcified lesions that may prevent access or safe stent placement. * Pregnant and breastfeeding women