Adjunctive Neurovascular Support for Wide-neck Aneurysm Embolization and Reconstruction

Inclusion Criteria: * Patient who presents with an angiographically confirmed, wide neck intracranial aneurysms located at a bifurcation of the basilar artery or carotid terminus artery * The target aneurysm is in a vessel with a diameter of 2.7 mm to 4.5 mm. * The patient is 18 years or older at the time of consent * The patient has signed the IRB/EC approved informed consent form * In the opinion of the physician, placement of the PulseRider is technically feasible and clinically indicated * Subject has mental capacity and is willing and able to comply with protocol requirements and follow-up Exclusion Criteria: * Unstable neurological deficit (condition worsening within the last 90 days) * Subarachnoid Hemorrhage (SAH) within the last 60 days * Irreversible bleeding disorder * mRS score ≥3 * Patient has another aneurysm which, in the Investigator's opinion, will require treatment within the follow up period (365 days) * Platelet count \< 100 x 103 cells/mm3 * Inability to tolerate, adverse reaction or contraindication to taking aspirin or clopidogrel * A history of contrast allergy that cannot be medically controlled * Known allergy to nickel * Relative contraindication to angiography (e.g., serum creatinine \> 2.5 mg/dL) * Woman with child-bearing potential who cannot provide a negative pregnancy test * Evidence of active infection * Other conditions of the heart, blood, brain or intracranial vessels that carry a high risk of neurologic events * Evidence of disease or condition expected to compromise survival or ability to complete follow-up assessments during the 365-day follow-up period * Extracranial stenosis greater than 50% in the parent artery requiring access to the lesion * Intracranial stenosis greater than 50% in the treated vessel * Extreme vessel tortuosity that prohibits appropriate control of the micro-guide wire and/or the PulseRider delivery wire