FIGURE 1. Photographs of occluded distal shunt catheter by using different occlusion devices. A: By making a direct tie of the shunt catheter with a black silk 4-0 suture material. B: By applying a Yasargil aneurysm clip. Note that the distal end of the clip blades is reinforced with a black silk tie to increase the ending force. C: With a bulldog clamp.