The Use of p48/64 MW HPC Flow Modulation Device in the Treatment of Wide-necked Intracranial Aneurysms

To assess safety, effectiveness, and performance of the p48/p64 MW HPC Flow Modulation Device in the endovascular treatment of wide-necked intracranial aneurysms (IA) at 12 months post-procedure.

Inclusion criteria

• Subject is ≥ 18 years
• Subject has a mRS ≤2 before the index procedure
• Subject has an unruptured or recanalized intracranial aneurysm (IA). The subject may also have a previous ruptured aneurysm, provided rupture of this aneurysm has occurred more than 30 days from the index procedure. The IA must have the following characteristics below:

• Saccular or fusiform morphology
• Located in the internal carotid artery and its branches
• Aneurysm neck ≥4 mm or dome-to-neck ratio <2
• Parent vessel diameter ≥2.0mm and ≤5.0mm both distal and proximal to the target IA
• Subject or subject's legally authorized representative (LAR) has provided written informed consent and has agreed to comply with study procedures.

Exclusion criteria

• Previous flow diverter or stent within the parent vessel of the target aneurysm to be treated
• Any other known IA requiring treatment within 3 months post-procedure
• Subarachnoid hemorrhage in the past 30 days prior to the index procedure
• Has a true bifurcation aneurysm, defined as an aneurysm (saccular or non-saccular) located at the point of vessel bifurcation
• Anatomy unsuitable for endovascular procedure due to severe vessel tortuosity or stenosis, or stented ipsilateral carotid artery within 3 months prior to the index procedure
• Subject with a brain arteriovenous malformation (AVM) or other vascular malformation in the area of the target aneurysm
• Major surgery in the last 30 days, including endovascular procedures, or is planned in the next 90 days after enrollment date
• Unstable neurologic deficit (i.e., any worsening of clinical condition in the last 30 days)
• Known serious sensitivity to radiographic contrast agents that cannot be managed medically
• Known sensitivity to nickel, titanium metals or their alloys or any other investigational device components
• Irreversible bleeding disorder and/or signs of active bleeding at subject presentation
• Known renal failure with a serum creatinine >2.5 mg/dl (or 220 μmol/l) not on dialysis
• Contraindication to CT scan, MRI, or angiography
• Contraindication or known allergies to anticoagulants or antiplatelets (e.g. aspirin, heparin, clopidogrel, prasugrel, or ticagrelor)
• Known coagulopathy, or an admission International Normalized Ratio >3.0 without oral anticoagulation therapy, or an admission platelet count of <100000
• Has acute life-threatening illness other than the neurological disease (i.e., acute kidney or heart failure) to be treated in this trial
• Unable to complete the required study follow-ups
• Evidence of active infection at the time of treatment (e.g., fever, elevated white blood cell count)
• Participating in another clinical trial that could affect participation or primary outcomes of this study
• Women currently pregnant or wish to become pregnant during the study or breast feeding.