Thanks very much for your reply! It's good to hear that there are possible solutions. I will look into these hospitals.
Just to add, the best solution probably to finding such experience is approach teaching hospitals. This is usually where the top professors reside and they know their stuff.
Depending where the blockage is, there are some amazing tools for angioplasty. Basically there are Lasers, drills, cutters, slicers etc. However, what you need to do is find a cardiologist with the training to actually use them.