InterX Therapy

Frequently Asked Questions for Professionals

InterX is an advanced form of Neurostimulation that integrates into existing treatment programs to enable enhanced results with both acute and chronic conditions. InterX is FDA cleared for acute and chronic pain relief and pain management.
The InterX products are effective for:
  • Acute and chronic pain relief and the resulting increase in range of motion
  • Neuropathic and nociceptive pain
  • Reducing rehabilitation times from sports injuries and other acute trauma
  • Muscle relaxation, reducing muscle cramps and spasms
  • Enhancing neuromuscular re-education
Scan - The treatment area is scanned using the InterX device to identify specific areas of low impedance. These are optimal treatment points for InterX stimulation. The scanning can be done either by sliding the device over the skin or by placing the device and taking numerical measurements.

Target - These areas of low impedance are then targeted with very specific stimulation. The interactive stimulation adjusts constantly in response to changes in the electrophysiology of the tissue. This specific, dynamic stimulation is unique to this technology.

Dynamic - If appropriate, the patient is moved through a series of positions, stretches or exercises while stimulation is applied to points of pain. The portability and ease of application make this a very quick and effective application where neuromuscular and proprioceptive re-education can be combined with interactive neuro-stimulation for enhanced results.
The time needed for treatment can vary but averages approx. 15 minutes. Very short treatments can be used on the sidelines of a sports game taking only a few minutes. When treating more difficult chronic conditions, the session may last up to 30 minutes as there is a larger area of the body to scan when incorporating neurologically related areas.
Yes, the InterX integrates very well into other treatment protocols. It is best to use InterX first so that other treatments do not affect skin impedance before you scan the treatment area.
Though patients typically see good results immediately, some chronic conditions may require 6 treatments or more before changes are noted. One post surgical clinical trial showed a reduction in average pain from 9/10 to 4/10 in the first treatment.
InterX is very easy to use and there is a one hour training program that will teach you how to be effective in the use of the device. This will be delivered by your local representative or national distributor outside the US. There is a powerpoint presentation to support this. NRG is currently working on an interactive DVD to simplify the training further.
The InterX is very effective without the need for any accessories but the other electrodes do expand your treatment options significantly. The flexible arrays allow for unattended use and make it easier to exercise during the treatment. The small classic and circular electrodes are excellent for treating boney areas or smaller body parts like the hands, fingers and toes. The comb electrode can be used on parts of the body where hair may stop the main electrode contacting the skin. The dome electrode fits ergonomically into your hand allowing you to treat without having to hold the main device. The soft-tissue electrode is very popular and unique to this technology as it allows you to do myofascial release, massage or trigger point treatment while applying stimulation. This makes the treatment more effective and takes the strain off your hands and fingers during manual therapy.
Specificity of the Stimulation (Scan)
InterX identifies and treats very specific areas of low impedance. These are areas of skin where nerve endings are displaying a response to injury or pain.. So the stimulation is delivered exactly where the body needs it. This is not always where the pain is so it is a great benefit to be able to scan the area with the InterX to identify these points.

The high density current (Target)
The high amplitude, short pulse width, dynamic waveform elicits a greater response from the body than other electrical stimulation. The InterX has closely spaced electrodes which means the current is very high density and very specific and not restricted by muscle contraction. It is believed that this stimulates a neuropeptide/cytokine cascade which is believed to create a longer lasting effect. Central nervous system responses are often observed too.

The Interactive Waveform
The parameters of each individual pulse are controlled by the electrophysiology of the tissue. The waveform changes constantly as the body responds to the stimulation and pain relief. This stops the body accommodating to the stimulation making it more effective. It also means that there is no need to use messy conductive gels.
There are two generally accepted theories for the mechanism of action of electrical stimulation devices; The "Gate Control Theory" and the "Stimulation of the release of endogenous opioids". The exact mechanism of InterX is not yet fully understood and there appear to be a number of mechanisms at work based on the applications used and clinical outcomes that are observed. The amplitude of the stimulation is sufficient to cause endogenous opioid release and this may explain the immediacy of results experienced with InterX. Often pain relief lasts long after the treatment is over which hints at a neuropeptide/cytokine cascade effect and a CNS response. Clinical trials have shown reduction of inflammation and improved tissue formation with InterX stimulation which is also supported with anecdotal evidence. NRG have completed a clinical trial showing the physiological effects of InterX on acute ligament tears which we hope to have published by the end of 2007. The mechanism for this effect is currently being investigated by NRG. Further research is needed to understand all the different mechanisms of action of InterX Therapy.
The InterX does not mask pain. If that were the case pain would return soon after the treatment ended. NRG is committed to clinical trials to research the sustained relief as well as reduction of inflammation that is observed following InterX therapy.
Yes, there is a one year warranty on all InterX devices and electrodes. Extended warranty options are available.
InterX® therapy is a safe, non-invasive treatment that can be used on patients of all ages. Patients should consult their physician regarding the InterX® treatment approach that is best for an individual medical condition.

To NRG's knowledge, there have been no reported cases of severe injury due to the use of the InterX® products. However, caution should be taken when using neurostimulation devices as they may interfere with other electrical medical products.
The InterX® product can be applied as an independent therapy to reduce pain and improve quality of life for patients suffering from chronic conditions (RSD, spondylosis, osteoarthritis). Use of the InterX® product as a primary modality can be billed as a distinct therapy, depending upon the specific practice of the treating clinic. The flexibility of InterX allows the integration of the technology into manual therapy, myo-fascial release and therapeutic exercise which may change the way the treatment is billed.

InterX® therapy is an attended or unattended treatment to reduce pain and more quickly achieve therapy goals. Typically, the InterX® product can be used as an adjunctive therapy to routine physical or occupational therapies. Based upon how the InterX® product is incorporated into the plan of patient care, InterX® therapy may be billed in multiple ways. CPT codes available for use include 97001, 97002, 97003, 97004, 97032, 97110, 97112, 97140, 97530 and 97535.