and has two modes of operation.
The first one is to ride across the aneurysm opening to place a stent, then insert a microcatheter through the stent mesh into the aneurysm cavity and deliver a spring coil to occlude the aneurysm. Finally the microcatheter is withdrawn.
The second type is to first insert the microcatheter into the aneurysm lumen, then place a stent across the aneurysm opening, subsequently deliver a spring coil via the microcatheter to embolize the aneurysm, and finally withdraw the microcatheter.
The end result of both approaches is to leave the stent in the aneurysm-carrying artery for life. The stent acts as a window pane to shield the spring coil from the aneurysm cavity, occluding the aneurysm while preserving blood flow to the carrier artery.