The Barrel Vascular Reconstruction Device : A Retrospective, Observational Multicentric Study

Area of Science:

• Neurosurgery
• Interventional Neuroradiology
• Medical Devices

Background:

• Wide-necked bifurcation and branching aneurysms pose treatment challenges.
• The Barrel device is a novel electrolytically detachable microstent designed for neck reconstruction to support coiling.

Purpose of the Study:

• To evaluate the safety and feasibility of the Barrel device.
• To assess immediate and mid-term occlusion results for wide-necked intracranial aneurysms.

Main Methods:

• Retrospective analysis of 21 patients treated with Barrel device and coiling.
• Screening of two tertiary care centers' databases (June 2015-September 2016).
• Evaluation of angiographic and clinical outcomes, including modified Raymond-Roy aneurysm occlusion classification (RROC).

Main Results:

• Immediate complete occlusion (RROC1) in 90% (19/21) of aneurysms.
• Mid-term follow-up (median 282 days) showed 95% (19/20) complete occlusion.
• Low complication rates: 10% intra-procedural thrombus, 5% symptomatic in-stent stenosis, both managed successfully.

Conclusions:

• The Barrel device exhibits a satisfactory safety profile.
• It demonstrates promising immediate and mid-term complete occlusion rates.
• Further investigation of the Barrel device for wide-necked intracranial bifurcation aneurysms is warranted.