Makes no sense to use an antenna designed for use on surgery incisions, long rectangular shape, on Thumb Arthritis
The logical choice for Thumb use would be the 6 cm diameter antenna, which would focus the device energy on 30 square cm rather than the 110 square cm that the standard 12 cm diameter antenna would cover.
The Stanford people didn't make a mistake...You Did!
When you get a chance, Re-read the first sentence from the Study Overview: Long-Term Objective: Determine if high-frequency PEMF therapy reduces pain in patients with thumb carpometacarpal (CMC) joint osteoarthritis (OA).
Actipatch, RecoveryRX and the higher frequency RecoveryRXtra are all a Model 088. RecoveryRxtra is modified with a smaller antenna. So it would appear that this higher power device has been around since July 2022.