A custom stimulator device is being made for our project which we will use to deliver transcranial electrical stimulation on human brains. The company is well-known and has years of experience with medical deivces, but this particular device is quite new and therefore has no standards or certificates yet.
So my question is which laws or regulations in general are there for using such an untested device on humans for research? Would it be enough for us to have ethics committee approval and subjects' written consent?