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Observational Study
. 2019 Jun;29(2):295-301.
doi: 10.1007/s00062-017-0660-2. Epub 2018 Jan 9.

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

C Kabbasch  1 , A Mpotsaris  2   3 , V Maus  2 , J C Altenbernd  4 , C Loehr  4
Affiliations
Observational Study

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

C Kabbasch et al. Clin Neuroradiol. 2019 Jun.

Abstract

Background and purpose: The Barrel device is an electrolytically detachable laser cut, closed-cell microstent that is used for neck reconstruction in wide-necked bifurcation and branching aneurysms to support coiling. The key feature is a barrel section that herniates over the aneurysmal ostium. The objective was to evaluate the safety, feasibility and the immediate and mid-term occlusion results of this new device.

Material and methods: The databases of two tertiary care centers were screened for all Barrel-based stent-assisted intracranial coil embolization of wide-necked aneurysms between June 2015 and September 2016. Case files and imaging data were retrospectively analyzed for angiographic and clinical outcome parameters, including immediate and mid-term modified Raymond-Roy aneurysm occlusion classification (RROC) rates and procedural complications.

Results: A total of 21 patients comprising 21 intracranial aneurysms (20 unruptured, 1 ruptured) were treated with the Barrel device and additional coiling of the aneurysm sac. All aneurysms were wide-necked, saccular bifurcation aneurysms defined by a dome/neck ratio ≤2. Immediate complete occlusion (RROC1) was observed in 19/21 (90%). An intra-interventional in-stent thrombus formation in two cases (10%) was medically resolved without neurological sequelae. A single case of symptomatic in-stent stenosis (5%) was cleared by balloon angioplasty. Follow-up (FU) was available in 20/21 cases (95%) after a median of 282 days (range: 17-591 days). At follow-up 19/20 aneurysms (95%) were completely occluded (RROC1).

Conclusion: The Barrel device showed a satisfactory safety profile and a promising rate of immediate and mid-term complete aneurysm occlusion for stent-assisted coil embolization of wide-necked intracranial bifurcation aneurysms, warranting further investigation of the device.

Keywords: Bifurcation stent; Coiling; Device; Endovascular; Wide-necked aneurysm.

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