Fig. 3

Schematic drawing of the “pigtail through snare” technique. a A snare loop initially opens near the target catheter fragment with inaccessible ends. b A pigtail catheter passes through the snare loop in advance. c The pigtail catheter hooks the catheter fragment. d The pigtail catheter pulls the catheter fragment that falls automatically into the snare loop. e The snare loop grasps the catheter fragment at the initial position