There is such a thing.
@attheedgeofscience wrote about it in his blog.
He managed to almost cure his tinnitus and attributes it to novel treatments that he has undergone. From his blog:
The HIFU treatment enables neurosurgery of the brain without having to drill into the skull of the patient. Through ultrasound combined with an extreme fixation of the patient's head, highly specific targets in the brain can be ablated allowing certain specific neurological conditions to be treated (e.g. tremors, phantom pain, Parkinson's disease).
In the end he wasn't eligible for the treatment because there was no region found in the brain that was responsible for his tinnitus. It's a modern version of lobotomy in my opinion, so I would be pretty cautious about this.
He ultimately ascribes his succes to other treatments. You should read his story, it's just one person's journey but I found it interesting.