What is an interferential TENS unit?

interferential tens unit

An interferential TENS unit is an electrotherapy device that is able to deliver both interferential therapy (IF) and transcutaneous electrical nerve stimulation (though not at the same time). TENS and IF are not mutually exclusive but do not overlap either. For example, both waveforms are used for

·         Symptomatic relief of chronic intractable pain

·         Inflammation reduction

·         Post-traumatic acute pain and edema

·         Post-surgical acute pain and edema

Dms-store

 However, IF uses lower frequencies and penetrates deeper tissue than TENS. Discount Medical Supplies has several products that fit this description –whether it is a TENS/IF unit, or a device that also includes other waveforms like EMS, Microcurrent, or Russian Stim- such as:

·         InTENSity IF/TENS Combo

·         Quattro 2.5

·         InTENSity Select Combo 4-in-1

·         Twin Stim Plus 3rd Edition

·         CareTec IV TENS/EMS/IF/Russian Stim

·         ComboCare Ultrasound

InTENSity IF/TENS Combo

 

Tens settings

IF settings

Treatment modes

Burst, normal, pulse width modulation, pulse rate modulation.

Four programs (P1, P2, P3, P4.)

Cycle time

(Optional, only modulation) 5-30 seconds.

5-30 seconds

Timer

Adjustable 1-60 minutes or continuous.

Pulse width

Adjustable 50-300us (microseconds).

125us

Pulse rate

Adjustable 1-150 Hz (0,5-5 Hz for burst).

4kHz

Interference frequency

 

(Optional, only P4) Adjustable 1-150 Hz.

 

 

Quattro 2.5

 

TENS

IF (IFC-4P, premodulated IFC-2P)

Treatment modes

10 programs

Frequency

10-160 Hz

 

Pulse width

50-375us

 

Amplitude modulation

60-100%

 

Treatment times

15-20 minutes

15 minutes

Vector

 

45˚

Carrier frequency

 

4kHz

Low beat frequency

 

5-130 Hz

High beat frequency

 

4-150 Hz

 

The ComboCare is nearly identical to the Quattro except that it can also deliver ultrasound therapy. The settings for the interferential TENS unit InTENSity Select Combo 4-in-1 are the exact same as those for the InTENSity IF/TENS Combo. The difference between those two devices is that the former also includes EMS and Microcurrent waveforms. The Twin Stim Plus 3rd Edition (like the Quattro 2.5 and CareTec IV) also provides four waveforms (substituting Russian Stim for Microcurrent), but its TENS and IF settings are ever so slightly different.

 

Twin Stim Plus 3rd Edition

 

TENS

IF

Treatment modes

Burst, normal, modulation, strength duration 1, strength duration 2.

Normal, modulation, modulation 1.

Pulse width

50-300us

 

Pulse rate

2-150Hz (0,5-5 Hz for burst).

 

Timer

1-60 minutes or continuous

Interference frequency

 

1-150Hz

 

All of these devices, as well as other interferential TENS units such as the Ultima Neo, Winstim ST4U, and Winstim WSU come fully equipped with accessories like batteries, lead wires, electrode pads, and more.