This seems like a game changer. According to the company website they have treated 6,000 patients. https://nanoknife.com Further Googling showed it has been around since 2008 and machine in 2010 the machines cost $300k. Maybe the novel application is prostate cancer? https://www.wsj.com/articles/SB10001424052748704029304575525...
And a dumbed-down video primer on how it works: https://nanoknife.com/technology/
Basically they insert somewhere between two and a handful 1mm diameter needles, then pulse with high voltage to kill the cells in between.
The article mentioned concerns from doctors that it hadn't been through large clinical trials yet. 13 years later, does anyone know of those trials have taken place?