There have been a number of break-through therapies in recent years that only work with continued use.
There are a lot of ways a clinician can get away with off-label uses as long as the clinician does not advertise the use. The risk with this is an avoidance of reporting adverse events.
He would likely rent you the system based on using it 'for your neck.' I wonder how he would document the export of the device.
He does maintain a list of USA clinics at
http://bioflexlaser.com/clinics/clin...ations.php#USA