My brother has a blockage in his Esophagus which now makes him unable to swallow any thing?

I’m (…). My younger brother that is 1 year and 7 months has a medical problem. He swallowed a battery and it has affected his Esophagus. He now has a blockage in his Esophagus which now makes him unable to swallow any thing. An operation was done for him in the hospital in which they opened his esophagus and put a pipe in it that can enable food to pass in through when he eats but right now, the pipe did not work and instead, it got worse. I really need your help and advice, Doctor. What can be done to this for his Esophagus to open and work properly so he can eat. His blockage of Esophagus is making him thin and he is getting worse. My brother’s esophagus needs to open for him to eat properly. I need an advice Please, and I will be very grateful if you receive this message and reply me.