PT  - JOURNAL ARTICLE
AU  - Christopher P Kellner
AU  - Alexander G Chartrain
AU  - Claire Schwegel
AU  - Thomas J Oxley
AU  - Hazem Shoirah
AU  - J Mocco
TI  - Republished: The bumper technique for advancing a large profile microcatheter
AID  - 10.1136/neurintsurg-2016-012872.rep
DP  - 2017 Dec 01
TA  - Journal of NeuroInterventional Surgery
PG  - e38--e38
VI  - 9
IP  - 12
4099  - http://jnis.bmj.com/content/9/12/e38.short
4100  - http://jnis.bmj.com/content/9/12/e38.full
SO  - J NeuroIntervent Surg2017 Dec 01; 9
AB  - Operators commonly encounter difficulty maneuvering a microcatheter beyond the distal lip of wide neck aneurysms and aneurysms in challenging locations. Few techniques have been described to guide operators in these particular situations. In this case report of a 56-year-old woman with a 16 mm ophthalmic artery aneurysm, the microcatheter continually snagged the distal aneurysm lip, preventing delivery of a flow diverter into the distal parent vessel. In troubleshooting this obstacle, a second microguidewire was introduced alongside the microcatheter and was used to cover the distal lip of the aneurysm to prevent further snagging. The second guidewire successfully deflected the microcatheter into the distal vessel, a technique that we have aptly dubbed the ‘bumper technique’.