http://www.energetic-medicine.net/interx.html schrijft:
The function and internal design of the InterX is very much the same as the Scenar Professional but the InterX devices have taken a leap in user interface with a more modern look.
....
InterX has distanced itself from the Bioenergetic medicine world, now interx focus on these more orthodox applications:
* Injury Management - on the sports field or in the clinic.
* Rehabilitation - complementary to physical therapy.
* Pain Relief - both acute and complex chronic pain conditions.
....
The InterX is significantly more expensive than its competitiors and from our testing there is no improved results when compared to the ACUSCEN and SCENAR PRO
.....
The Interx has been approved by the FDA and has a CE mark for Pain Relief and pain management

http://www.mdrweb.com/industry/archive/index.cfm?fuseaction=510kdetails&fda_510k=k042912
510(k) Premarket Notification Database
Device Classification Name: STIMULATOR, NERVE, TRANSCUTANEOUS (PAIN RELIEF, TENS

http://www.accessdata.fda.gov/cdrh_docs/pdf4/K042912.pdf

Het apparaat is dus helemaal niet "approved", maar zo gelijkend op een apparaat van voor 1976, toen de apparatenwet inging,  dat het verkopen ervan is toegestaan omdat er geen gevaar bij is.

INTERX