Choosing A Company To Buy A Tens Machine From

       Companies selling tens units all claim their product to be the best value for the money but fail to establish the reasons why.  Having been in the business for more than 30 years, since the commercial side began, we feel we can offer some reasons why one unit is better than another.

   1.  Lifetime Warranties

        The biggest problem with a lifetime warranty is most tens units outlast the manufacturer's or distributor's existence.  There is no value in a lifetime warranty if the company that warrantied it is out of business.  Look for units from companies that have been around and are likely to remain so.

   2.  Best Technologies

          Technologies change constantly and that is one of the reason that " lifetime warranties" are really only viable until an advance technology replaces the older standards.  In the tens business the technologies change about every 3- 5 years.  Medicare will replace units with newer models every 5 years knowing it's not an issue of the unit is old, but the prevailing technology has changed so much a new unit is warranted.

 Generally speaking the Infrex Plus unit is classified as "durable medical equipment" which is the same as a hospital bed, toilet seat, wheelchair, etc. and if your policy has coverage for "DME" then you probably have coverage for the rental and purchase of the unit as well as all needed supplies.

   If you are part of a PPO, HMO, or similar set up you may hear that the supplier has to be "part of the network" in order for the equipment to be covered.  The Infrex Plus is the only unit in the U.S. of it's kind so there is no one in any network that has it.  In almost all cases the insurance company will pay for the unit since no "network provider" has it and they will purchase "out of network".  Our office works with your insurance company to provide you with the unit whenever possible.

   In some situations if the insurance company does not cover the cost of the Infrex Plus unit we will work with you and them to make sure you receive a simpler tens unit.  We find the interferential mode of the Infrex Plus to be the most effective for most of our patients so we always try to make sure you are getting the pain relief, and if the simple tens does not provide it, then we work harder to get you the Infrex Plus unit!!!


A better solution for your acute and chronic pain.   home product


It is no longer economically beneficial to us or our customers to offer Medicare or Medicaid. This is the wave of the future for many health related companies and products.

Medicare and Medicaid coverage have been discontinued.
Check out our Free Trial

   Call for more information - 1- 800-937-3993 or This email address is being protected from spambots. You need JavaScript enabled to view it.This email address is being protected from spambots. You need JavaScript enabled to view it.

  It's also important if you have insurance to get a purchase in your records of the Infrex Plus unit, or minimally a tens unit, so your topical pain products, electrodes, batteries, cables etc. will be covered for as long as you own the unit and have pain.  This is why we discourage patients from paying "out of pocket" for supplies etc. when we know they are generally covered by insurance and we want to minimize your out of pocket costs.

   For most other insurance companies including liability cases, worker's comp. etc. we are very familiar with working with them and will do so.

   We want to work with you and your insurance company to make sure you are better off after using the Infrex Plus unit than you were before you ever discovered it.   All we want you to do is concentrate on minimizing or getting rid of your pain and we strive to help you. 


Meniscal Tear of Knee - Self Treatment Options for Pain

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This is a reproduction of an article from Palmer Chiropractic College published in National Library of Health concerning a tear in right lateral meniscus treated with ice and interferential.  What makes these type articles interesting is if the tissue being injured is capable of repair ( not so with lateral meniscus as we presently treat ),  then will the frequent use of interferential treatment provide for acceleration of heal time, as happens with non-union fractures and wound repair?

   I personally do not pretend to understand how certain tissues heal,  and to my best understanding the meniscus is incapable of healing itself,  but with many injuries to our body the body is capable of finding other options to replace the function of the damaged tissues.  Much of the present knowledge of tissues being capable, or incapable, of repair/replacement is predicated upon our understanding of how basic cells replicate and are capable of  cellular specialization.
  One of the most promising aspects of this process we are only beginning to understand is neural tissue as is relates to spinal cord injuries.  Advances are being made every day, whether how to treat immediately post injury ( cooling ), or how potential stem cells can be injected for duplicative replacement of the damaged, destroyed neural cells.
   An example is with the anterior cruciate ligament ( ACL) where if not repaired surgically then  the body will compensate by strengthening muscles in the area, assuming rehab. is done, to offset the loss of stability the ACL provided.

The Benefits of Carryover Pain Relief

    In this specific the interferential treatments were apparently intended for pain relief and possibly there was edema reduction going on.  It seems the carryover pain relief may have lasted only a short time and the patient would return for treatment.  In this situation the patient could have self treated, while working, with the Infrex Plus on interferential mode.   My personal interest is when the patient can now self treat, rather than go to a clinic for treatment, then what new therapies will we see? 

Management of a patient with calcium pyrophosphate deposition disease and meniscal tear of the knee: a case report.

Alcantara J, McDaniel JW, Plaugher G, Alcantara J.

Palmer College of Chiropractic-West, San Jose, CA, USA.

OBJECTIVE: To describe the chiropractic management of a patient suffering from a right lateral meniscus tear concurrent with calcium pyrophosphate dihydrate (CPPD) deposition disease. CLINICAL FEATURES: A 51-yr-old bus driver suffered from right knee pain (7 on a 1-10 pain scale). The onset of the pain was gradual and increased during braking and accelerating. Palpatory tenderness was noted at the right lateral knee joint line and the inferior lateral margin of the patella. Active resistive range of motion (ROM) in the knee during extension was painful throughout the full ROM, whereas passive ROM was restricted in flexion at 110 degrees. A positive McMurray's test reproduced pain at the knee. Radiographic analysis revealed CPPD deposition disease, and magnetic resonance imaging revealed a probable "parrot's beak" tear in the posterior horn of the right lateral meniscus. INTERVENTION AND OUTCOME: The patient was treated conservatively. He was instructed not to put weight on the knee and not to return to work for 5 days. Initial treatments involved the use of ice and interferential electrical stimulation along with glucosamine sulfate supplements. Bicycling, weight lifting for general fitness and general knee strengthening exercises were prescribed. Approximately 5 months after initial treatment, the patient was lost to follow-up; 12 months later, he returned for treatment because of a recurrence. Physical examination at that time revealed knee pain rated at 3/10 but there was no pain upon palpation, McMurray's test was negative and right knee ROM was full without pain. CONCLUSION: A patient suffering from CPPD can be managed by conservative means. The pathophysiology, clinical features and management considerations in the treatment of the patient's condition(s) are also discussed.

Publication Types:

  Carryover Pain Relief In Acute and Chronic Pain Conditions Differs Due to Cellular Elasticity And Rehabilitation Exercises

   Interferential treatments are historically used for chronic pain conditions such as RSD, fibromyalgia, low back pain, and osteoarthritis but can be very beneficial in post injury, or post surgical procedures, such as knee replacement surgery, acute sports injuries, post operative pain control and will decrease the rehabilitation time needed.  Also the permanent physical effects that weaken the affected area can be minimized by increasing cell elasticity.

   It is important to note that acute pain and chronic pain are two different types of pain. We have all experienced acute pain from a sudden soft tissue injury, such as a sprained ankle, or even a simple bee sting. The pain is immediate, but as the injured part heals the pain goes away.

   Lumbar stenois is a condition in which the spinal canal narrows and causes neurologic symptoms almost always resulting in pain.  Generally speaking the onset occurs in persons over 50 years of age.  The hallmark of lumbar stenosis is pain in the back and legs which is aggravated by bending backwards, standing and walking. The pain is lessened by bending forward and to the sides.  Many physicians seem to accept that the natural course of lumbar spinal stenosis is that of a progressive worsening.  The classic syndrome associated with lumbar stenosis is termed neurogenic intermittent claudication.  The pain generally occurs in the lower limbs of the patient. 

  Historically it had been accepted that only surgery could check the development of the disease. The procedure is called a decompressive laminectomy in which the laminae (roof) of the vertebrae are removed, creating more space in the spinal canal for the nerves.  In 1996 in the British Journal of Neurosurgery it was concluded that conservative treatment of lumbar spinal stenosis is recommended for patients with moderate stenosis.  Conservative treatments in 1996 were considered to be physical therapy, chiropractic flexion spinal manipulation, bracing, strength training, muscle stretching and relaxation as well as interferential treatments.

  Today with advances in early diagnosis, as well as new modalties such as the drx9000, it is felt an at home treatment of interferential therapy combined with stretching, strength training and increased physical activities may help stop the progression of the disease.  The most noticeable aspect of lumbar stenosis is the presence of pain which also prohibits the recommended therapeutic activities. 

  Interferential therapy provides immediate pain relief.  With the ability to treat at home it is reasoned that the multiple treatments will provide prolonged pain relief progressing over time which is called "carryover".  The interferential treatments can be administered prior to beginning exercise routines and during the routines so the stretching and rehabilitation exercises can be continued longer and with greater range of motion since the pain will not be present during and after interferential treatment. With interferential providing a biphasic ( +/-) polarity wave form it is felt the positive (+) aspect actually increases blood flow, prevents muscle spasticity, and relieves pain including radiating sciatica.  Due to the Widensky effect the area underneath the electrodes during an interferential treatment is naturally anesthesized which also provides the pain relief.

  With the advances that have been made it is no longer necessary for the patient suffering from lumbar stenosis to "grin and bear it".  There are better non-surgical, non-drug options available.


   Pre- Modulated Interferential Therapy Units for Chronic Pain Are Better Than Standard IFT

   Historically clinicians have been taught that interferential therapy ( IFT) is the result of two currents crossing each other in the area of pain within the body.  On paper this looks great when you see what is suppose to be going on in the body as a result of the current crossings, but tissues in the body do not respond as indicated in these nicely drawn photos.

    Due to the body having multiple types of tissues such as bone, cartilage, muscle, nerve, skin etc. the electrical currents are often stored until the cells have reached capacity and then suddenly released. This process is much like the old semiconductors used in the computer industry.   Each tissue type has different electrical capacities which regulates whether the current flows evenly between the electrodes attached to the painful area. Due to this the illustrations do not show actual reality but show pictures of what the current combination would look like if all tissues had the same electrical characteristics which we know is not true for differing tissues.

   Interferential therapy has been shown to be the most effective form of electrotherapy in the world for chronic pain control.

     Are there forms of interferential therapy better than others? The answer appears to be yes there is.  That better form of interferential is called "pre-modulated". 

   The premodulation method of creating the interference effect has been developed in recent years and is known as premodulated interferential. With this method, both outputs of the unit provide a carrier frequency of 4,000 Hz. However, each output has the ability to premodulate or burst the frequency within the unit and does not rely on the fickle nature of our own human cells and tissues. Only the best engineered units have the ability to synchronize perfectly these bursts in the same polarity, at the same time, in order to create premodulated interferential. 

   Within the unit there are uniform resistances, capacities, etc. and the combination of the two currents can be carefully crafted and controlled.  Once the combination is created then that actual combined waveform is then sent down the cables to the electrodes and enters the body in the most beneficial forms. The difference is better, longer lasting and immediate pain relief occurring during the initial treatment. It is imperative that any chronic pain patient know upon the first treatment that interferential works for them. 

   Today quality companies offer patients the free trial of interferential to establish the efficacy for that patient.  By using pre-modulated units the true pain relieving effect is greatly enhanced allowing the patient the experience of true modulation and controlling the outcome so the trial is successful.

  MedFaxx offers free no obligation trials of the Infrex Plus to establish the benefits so the patient knows whether the unit will provide the relief they want or not.  It's part of the process of believing in the product and it's ability coupled with a desire to help those in need.

  MedFaxx has maintained for over 30 years it's policy of:

           No Deserving Patient Will Be Deprived Of Our Equipment Due To Lack Of Funds


    The "CMN" form is the form the Doctor fills in, or one of his office personnel, so Medicare patients and others are eligible to get an Infrex Plus or Tens unit paid for by their insurance company.  We provide it so it can be downloaded if needed.

    The MedFaxx staff generally sends this to the Dr. or the patient as part of our billing process for our patients.  We will assist the Doctor's staff if needed so our patients can obtain an Infrex Plus unit.




Tens units are now obsolete with the arrival of the Infrex Plus coupled with the ability to get the insurance company to pay for the Infrex Plus.   The Infrex Plus includes the advanced technology of interferential and the standby mode of Tens.

Other tens type units such as Select Tens, Select Pain Control, for electrical stimulation and pain relief are not up to current technological standards.   The video of Select Tens from Empi featuring a news video with Dan Marino actually show the Select Tens is only beneficial as a take home tens. is not the best source of information for chronic pain control but watch the Infrex Video for the latest history of development and technology.

With interferential therapy being the most used form of electrical stimulation for pain relief in the world the time is now to have more than a tens unit.  The Infrex Plus provides relief in one 30 minute setting so the continual wearing of a typical Select Tens is not necessary as the Infrex Plus with interferential now provides carryover relief.

Now you can also try the Infrex Plus FREE for two weeks and compare it to any Tens unit on the market, including Empi's Select Tens. 

For a Free Trial please call us at 800-937-3993 or sign up below.

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