pharmacological and mechanical therapies angiographic recanalization of occluded vessels has not been adequately achieved before stent placement in most cases this underscores the need for the present invention when sah and intracranial hematoma occurred in patients in whom balloon mounted stents were used they most likely resulted from distal wire perforation the distal wire purchase needed to navigate a coronary stent into the intracranial circulation may explain the occurrence of these adverse events alternatively multiple manipulations of the merci u00ae brand of retriever device or expansion of balloon mounted stents may have induced microdissections in the vessel stents designed for intracranial navigation have better navigability and pliability the wingspan u00ae brand of stent boston scientific was designed to have more radial force than the neuroform u00ae brand of stent and may further improve this technique however the art clearly needs to advance further in this area as supported herein in fig6 and 7 inter alia ia therapy for stroke has evolved during the past decade approval of the merci u00ae brand of retriever device represents a significant step toward achieving better outcomes in acute stroke for patients not suitable for or refractory to iv tpa however recanalization is not always achieved using this device therefore additional treatment options are required as offered for consideration herein spontaneous dissection of the internal carotid artery ica is one of the main causes of ischemic stroke in young and middle aged patients representing 10 to 25 of such cases because infarct due to dissection is mainly thromboembolic anticoagulation has been recommended to prevent.