What to do if the data in a paper you are reviewing is copied from another paper of the same authors which is supposed to be a different device?
I didn't quite understand the nuances involving "different device", but if I have the rest right: you've observed that the data of the present submission is identical to that of a past submission.  The present submission involves something different enough so that identical data is not plausible, and therefore you strongly suspect that the data included in the present submission is not legitimate.  Is that it?

If so, I see just one reasonable option: bring this information to the attention of the editors.  It is serious enough that you need not (and perhaps should not) make a recommendation of acceptance or rejection: this needs to be resolved first.