Essential Tremor

At the age of 24 I was diagnosed with essential tremor. Today I am 59 years old. To help decrease tremor, I take primidone, a beta blocker propranolol and alprazolam for anxiety. As I am older, the drugs have had less effect and the tremors have worsened. A new treatment called High Focused Ultrasound (HIFU) arrived here in Brazil, where I live.
The treatment consists of the emission of a focused ultrasound performing a unilateral strategic injury in dysfunctional pathways in certain diseases, in this case Essential Tremor.
Please, has anyone heard about this treatment? If yes, what is your feedback? Thank you.