Removal of errant coils using the Tigertriever-13.

Coil migration poses a significant intraprocedural risk during coil embolization in interventional neuroradiology procedures. In this technical video we describe the technique of removal of errand coils using the low profile Tigertriever-13 device.1 Traditional methods of errant coil retrieval rely on the use of stent retrievers;2 however, these devices are usually too large to fit through smaller inner diameter 0.013-0.0165 inch coiling catheters, thus requiring upsizing materials in emergency situations.3 We demonstrate the technique of coil retrieval using this low-profile device ex-vivo in silicone flow models, then its application in vivo as a 'bail-out' technique during acute embolization of a ruptured peri-callosal aneurysm which required retrieval of errant coils (video 1). neurintsurg;16/12/1212/V1F1V1Video 1Errant coil retrieval using the Tigertriever device.