This Massage mouse is a cute (well kinda’ cute) electrical massage unit. It uses TENS like electrical pulses to massage and relax muscles. The mouse version shown here is available online (click the link below) for $79.99. Compare that to $2,000 for a medical / dental TENS.
Beyond the mouse there are “professional” XP models that run from $179 to $350.
In theory it could be used with patients to relax them before treatment or during a long procedure. It could also be used by the dentist and team to relieve those sore necks from straining to see inside someone’s mouth.