Interferntial Unit (I.F.T. MS Tens)

INTERFERENTIAL THERAPY
The effects of tissue stimulation with these medium frequency currents (medium frequency in electromedical terms is usually considered to be 1 KHz – 100KHz) has yet to be established . It is unlikely to do nothing at all, but in terms it is not capable of direct stimulation of nerve in common context of such stimulation.
Physiotherapy Interfernitial therapy utilizes two of these medium frequency currents, passed through the tissues simultaneously, where the are setup so that their paths cross &literally interfere with each other. This interference gives rise to an interference (beat frequency) which has the characteristics of low frequency stimulation- in effect the interference mimics a low frequency stimulation.
The exact frequency of the resultant beat frequency can be controlled by the input frequencies. If for example, one current was at 4000Hz and its companion current at 3900Hz, the resultant beat frequency would be at 100Hz, carried on a medium frequency 3950Hz amplitude modulated current.
By careful manipulation of the input currents it is possible to achieve any beat frequency that you might wish to use clinically. Modern machine usually offer frequencies of 1 – 150 Hz, though some offer a choice of up to 250Hz or more to a greater extent, the therapist does not have to concern themselves with the input frequencies , but simply with the appropriate beat frequency which is selected directly from the machine.

SPECIFICATIONS

Operating Voltage220V/ 50HzAbsorption46-Watts MaxFuses1 AmpABSORPTION50-Watts MaxFUSES1 AmpROOM TEMPERATURE100 C to 400 CMoisture10% to 80%Preset125 program in Preset ProgramsProgram100 Create ProgramsProgramCable & Electrode Test ProgramsMax. Output Current100mA Digital Display for CH-1Max. Output Current100mA Digital Display for CH-2Max Output Voltage100V (Peak to Peak)Medium Frequency2 KHz& 4 KHzBase AMF0-250 Hz with Digital DisplaySpectrum0-250 Hz with Digital DisplayTherapy Mode4P, 4PV, 2PWave ShapeTra, Tri, Rec.Vector Mode2PL, 4PL, 4PT, 4PNLDigital Timer1 to 99 Minutes adjustablePatient SafetyAvailableRUSSIAN CURRENTMedium Frequency2.5 KHzBase AMF0-200 Hz with Digital DisplaySpectrum0-200 Hz with Digital DisplayDIADYNAMIC CURRENTCurrent ModeMF, DF, CP, LP