Neurodyn Compact Electrotherapy Unit

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 Neurodyn Compact Description

           NEURODYN COMPACT has been designed according to existing technical standards for the construction of medical devices (NBR NBR IEC 60601-1 IEC 60601-1-2 and IEC 60601-2-10 NBR).

          Essential Performance:  NEURODYN COMPACT is a device to  apply electrical current via electrodes in contact with  patients with neuromuscular disorder therapy . It is a neuromuscular stimulator for transcutaneous FES and TENS currents. The technique involves the application of mild electrical stimulation through electrodes placed in body area affected by pain (TENS), or activate the skeletal muscles and produce movements (FES). This technique is noninvasive, without systemic effects, not addictive and has no side effects. The current intensity required for treatment depends on the the patient’s sensitivity. Therefore, the treatment should be started with minimum levels of intensity (very low), increasing up carefully to achieve the proper  effect to the procedure and according to the patient’s report

          NEURODYN COMPACT  case has modern design with front panel that enables the therapist to  easily adjust the equipment. This is a transcutaneous neuromuscular stimulator of two channels with adjustable independent intensity which  generate TENS and FES currents . It allows the choice of T (pulse duration) of 50 us 500 us and R (repetition frequency of pulses) of 0.5 Hz to 250 Hz The selection of these parameters (T and R) is made though a touching  keyboard with the information shown on the  liquid crystal display.

NEURODYN COMPACT enables the following types of chains:

1 – TENS: conventional TENS, acupuncture, brief and intense. 

2 – VIF TENS: TENS with automatic variation of intensity and frequency. 

3 – TENS B: BURST TENS (TENS modulated pulse trains to 2Hz). 

4 – S FES: FES synchronized. 

5 – R FES: FES reciprocal. 

6 – O VIF FES: FES synchronized with automatic variation of intensity and frequency. 

7 – R FES: FES Reciprocal with automatic variation of the intensity and frequency.


          NEURODYN COMPACT is a device designed to continuous operation mode. It uses technology which ensures the accuracy of the values shown. The accuracy of this operation in accordance with the provisions of particular standard for safety equipment for neuromuscular stimulation – NBR IEC 60601-2-10, Clause 50 / subclauses 50.1 and 50.2. The amplitude control continuously monitors the output current intensity from the minimum to the maximum and minimum value does not exceed 2% of value at maximum position. The parameters such as waveform output, pulse duration, pulse repetition frequency, amplitude range of output current do not differ by more than 30% listed in the following technical description.

           The values of the durations of pulses and  pulse repetition frequency  described here were measured at 50% of the maximum amplitude of the output. These parameters are for a load impedance in the range of 820 ohms to 1200 ohms. The effect of load impedance parameters described is very important. If the equipment operate outside the load impedance range specified , there may be inaccuracy in the values of the parameters, as well as modification of the waveforms described here.

           NEURODYN COMPACT is a  CLASS I, single-phase equipment with a Type BF applied part of safety and security.

Power source: – Bivolt 110/240 V ~ (60 Hz); 

Input Power – Consumption (Max): – 15 Va; 

Output channels – 2 independent channels in amplitude; 

Maximum peak current per channel with 1000-ohm resistive load (when R = T = 250Hz and 500useg): – Normal Mode TENS: 120 mA peak to peak per channel FES sync mode: 120 mA peak to peak per channel; 

Range Pulse Repetition Frequency (R) for TENS and FES 50% of maximum amplitude: – Variable from 0.5 to 250 Hz; 

Modulation Pulse Trains – BURST (only w / TENS mode): – 7 pulses corresponding to 25 msec cycle ON and OFF cycle of 475 msec (2 Hz); 

ON Time (FES): – Variable 1-60 seconds; 

OFF Time (FES): – Variable 1-60 seconds; 

RISE time of the pulse train (FES): – Variable 1-9 seconds; 

Time DECAY-down pulse train (FES): – Variable 1-9 seconds.

Dimensions (mm): – 265 x 275 x 115 (W x D x H); 

Weight (approx. without accessories): – 2.5 kg; 

Stacking up: – 10 boxes; 

Temperature w / storage and transportation: – 50-50 ° C; 

Environment operating temperature: – 5-45 ° C.

Abbreviations of units of measurement used:

mA = milliamperes; 

Hz = hertz; 

Va = volt amps; 

mm = mm; 

usec = us = microseconds; 

msec = milliseconds. 

V ~ = AC voltage; 

cm = centimeter; 

W = watts.

Accessories accompanying the appliance:

– 01 manual; 

– 04silicone rubber  Electrodes 50 x 50 mm; 

– 04silicone rubber  Electrodes 30 x 50 mm 

– 02 patient connecting cables  (Orange – Channel 1, Black – channel 2); 

– 01 detachable power cord; 

– 01 tube gel.

Ps.: Using cables, electrodes and other accessories different from those specified above may result in increased emissions or decreased immunity of equipment.

Note: The device and its features may change without notice.