A novel mother and child technique with a 4F inner catheter based on proper alignment of both catheters.

We occasionally encounter difficult cases of stent and balloon delivery to the distal lesion due to severe calcification or tortuosity of the proximal section. We describe a novel mother and child technique with a 4F inner catheter based on proper alignment of both catheters to deliver balloon, stent, and guide catheter to the distal lesion.