Neurodyn II Electrotherapy Unit

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 Neurodyn II  Description

          NEURODYN II was designed according to existing technical standards for the devepment  of medical devices (NBR NBR IEC 60601-1 IEC 60601-1-2 and IEC 60601-2-10 NBR).

          Essential Performance:  Neurodyn II is an equipment for applying electrical current  via electrodes in direct contact with the patient in neuromuscular disorders therapy  . It is a neuromuscular transcutaneous stimulator of FES and TENS currents. The technique involves the application of mild electrical stimulation through  electrodes placed in the 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 patient’s sensitivity. Therefore, 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 II  case has modern design with front panel that enables the therapist  to easily adjust the equipment. It is a neuromuscular stimulator transcutaneous  of four 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 throuch a  touching keyboard with the information

shown on the  liquid crystal display.

NEURODYN II provides the following types of chains:

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

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

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

4 – S FES:  synchronizedFES. 

5 – R FES:  reciprocal FES. 

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

7 – R VIF FES: reciprocal with automatic variation of intensity and frequency FES .


          NEURODYN II is an equipment designed for continuous operation mode. It uses  technology which ensures the accuracy of the values shown. The accuracy of this operation is 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% mentioned in the following technical description.

          The values of the durations of pulses and repetition frequency of pulses described here were measured at 50% of the maximum amplitude of the output.

          These parameters are for a load impedance in the range from 820 Ω to 1200 Ω. The effect of load impedance parameters described is very important. If the equipment operates 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 II is a single-phase equipment with Class II Type BF applied part of  security and protection.

Power source:- Bivolt 110/240 V ~ (60 Hz). 

Input Power-Consumption (Max):-  20 Va. 

Output channels:- four independent channels in amplitude. 

Intensity of maximum current per channel with resistive load of 1000 ohms:-

(when R = 250 Hz and T = 500 usec): Normal Mode TENS: 120 mA peak to peak  per channel and FES sync mode: 120 mA peak to peak per channel. 

Range Pulse Repetition Frequency (R) for TENS and FES:-Variable from  0.5 to 250Hz. 

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-rise time of the pulse train (FES):- Variable 1-9 seconds.

DECAY-time lowering of the 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 transport: 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. 

= watts. 

Ω = ohms.

Accessories accompanying the equipment :

– 01 Manual. 

– 08  Silicone rubber electrodes50 x 50 mm. 

– 08  Silicone rubber electrodes 30 x 50 mm. 

– 04  Connecting cables to the patient (Orange – Channel 1, black – channel 2 – blue  and green channel 3 – channel 4). 

– 01 Detachable power cord. 

– 01 Gel tube. 

– 01 Spare protection fuse.

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 have changes without any notice.