Treatment of Endovascular Coil and Stent Migration Using the Merci Retriever: Report of Three Cases
Figure 1
(a) and (b) Left carotid artery injection, lateral view; and plain X-ray. The stent was placed across the aneurysm neck and initial coil embolization performed. (c)–(f) During further coil embolization, the coil detached from the delivery catheter without activating the release mechanism. Manipulation and attempts to retrieve the misplaced coil with the Alligator and Microsnare device resulted in further coil herniation. (g) and (h) Left carotid artery injection, lateral view, and plain X-ray demonstrate that the misplaced coil was removed by the Merci device; a small fragment is left in the cavernous ICA and jailed to the wall with a second stent. (i) and (j) Angiogram and plain X-ray obtained after endovascular treatment show normal filling of the ICA and aneurysm occlusion.
