Introduction The vascular robotic Corindus Corpath GRX system has been recently used in experimental treatment of cerebral aneurysms. Nevertheless, data on feasibility and safety is limited to case reports. In addition, treatment safety has not yet been systematically compared to manual intervention in anatomically identical aneurysms.

Aim of Study Systematic comparison of treatment failure, flow diverter placement accuracy and procedural time depending of treatment modality (transfemoral robotic vs. manual) on an identical 3D-printed supraopthalmic ICA aneurysm in the Hamburg Anatomic Neurointerventional Endovascular Simulator (HANNES).

Methods Measurement of treatment failure rate (abort of procedure, displaced flow diverter) and procedure time (navigation of parent vessel + deployment) among 4 interventionalist with different manual experience levels (highly experienced to novice). All interventionalist treated the aneurysm robotic-assisted in 50% of the procedures.

Results The identical supraopthalmic ICA aneurysm was treated a total of 32 times (50% robotic-assisted). Failure rate due to technical abort of the procedure or stent displacement was 3/16 (19%) in the manual group, while no failure was recorded in the robotic group. Navigation of the parent vessel was significantly faster in the robotic group (median 37[IQR 22–47] vs. 83 sec[44–171], p=0.002), while stent deployment was faster in the manual group (median 25[IQR 17–41] vs. 44 sec[33–65], p=0.026).

Conclusion Robotic-assisted flow-diverter treatment of ICA aneurysms may be associated with lower technical treatment failure rate compared to conventional manual treatment in a true-to-life endovascular simulator. Advantage of the robotic setting seems to be a technically easier navigation of the parent vessel.

Disclosure of Interest Nothing to disclose (for all authors)