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Scenar Technical info

RITMSCENAR Professional
The basic mode of operation of a typical SCENAR device is to deliver a “dosage” of electrical stimulation impulses to the body via in-built and/or remote electrodes in direct contact with the skin surface.

These impulses have been tailored to mimic the electrical discharges of the nervous system, in order to elicit the organism’s response with optimum efficiency and minimum disruption to cell function, depending upon the unique requirements of the presenting pain disease dynamics (or lack of same). The action is aimed at both the “fast” pain blocking A-fibres and the “slow” pain producing and peptide generating C-fibres.

The signal stream, comprising waveform, signal strength (voltage and current) and frequency, can be varied in a number of ways, either by pre-selection by the operator or automatically by the control circuitry of the device. The “dosage” can be delivered automatically or overridden at the discretion of the operator, with guidance from visual indicators – which may be either numeric or colour-coded LED displays or both.

The basic signal component is a bipolar pulse, consisting of a negative square-wave followed by a positive saw-tooth, starting and finishing at zero and lasting for a few microseconds. A number of these pulses may be packaged into a discrete burst (intensity) which itself may be repeated at a fixed default frequency (DF). The individual pulses in these bursts (intensity more than 1) can themselves be spaced out (Z=10/close together, to 80/wide apart) to give a concentrated (deep) or diffuse (shallow) penetration, depending on local body density or depth of pain location. Alternatively, a single pulse (intensity=1) may be pre-selected to a pulse repeat rate (PRP) over a set frequency range (say F=15-350Hz). The signal may also be “modulated” (Mod=1,2,3,4,5:1) either by altering the ratio of “time-on” to “time-off” or by changing the pulse waveform by selecting one of a series of set damping factors (Dmpf = Sk 1,2,3,4,5). These “modulations” can either be applied individually or together.

There is also the possibility of automatically cycling both the pulse repeat rate (PRP) over a set frequency range (FM – say from 30 to 180Hz over 8 seconds) and the waveform-damping factor (Dmpf = Var). These cyclical modes can again be invoked either individually or together. The purpose of all these variants is to make available to the operator a comprehensive arsenal with which to stimulate both acute and chronic conditions and prevent the body from adapting to the signal before there has been time to generate sufficient neuropeptides (endorphins etc.) to relieve pain and create an enhanced environment for the organism to bring into play its own healing pharmacy to move towards homeostasis.

The power output can be set by the operator to be detectable but comfortable for the patient. It can also be adjusted during application should this be required. The maximum current output is 70mA and the peak voltage is 180v, derived from an internal battery (rechargeable externally or “off the shelf”). A further level of chaos is introduced by a random variation of the pulse amplitude from zero to the chosen comfort such that no two impulses are the same). This discourages adaptation in the organism. A feedback mechanism is provided by the constant monitoring of skin impedance, which will change with time and “dosage” delivered. Integration of these values permits calculation and display of rate of change (of current flow) and coefficient of waveform in relation to the starting point.

The RITMSCENAR devices adhere to the concept that the minimum dosage required to effect change is the most appropriate. This is furthered by emphasis on increase of information rather than energy content, thus minimising the triggering of body retaliation and adaptation mechanisms.

Form of SCENAR Impulse without load.

Form of SCENAR Impulse on-load (the device contact with the skin)

Different variants of SCENAR impulses on-load depending on skin resistance. The form and duration of impulse changing all time during the treatment because skin resistance dynamically changing too.


Purposes of applying
Two General Modes of application.

1. Subjective Dosed Mode (subjective diagnostic and therapy mode). This mode turned on when "Diag off" indicated on the screen.

2. Individual Dosed Mode (digital diagnostic and therapy mode). This mode turns on when "Diag 1, Diag 2 or Diag3" indicates on the screen.

1. To subjectively find "Asymmetry" points (pathological, deviation areas) in general and then treating them

2. To digitally find "Asymmetry" points (pathological, deviation areas) in general and then treating them

Wide range of power

Power level can be set in increments of 1 from 1to 250.Low level scale can be set for children or sensitive individuals.

Power (energy) level is set individually at the beginning of the session. For some individuals it can be 10, for others 60 or more. In some cases like emergency conditions or severe pain we need to set high energy level up to 250.

Wide range of frequencies
15-350 Hz

Low frequencies 15-60 Hz applies for degenerate conditions, high ones (120 and more Hz) - for inflammatory. High frequencies applies for acute pain relief also, low ones - for chronic or uncertain pain or complaint.

Frequency Modulation (FM)

If the frequency modulation turned on, the device generate different frequencies: from 30 Hz to 120 Hz to 30 Hz to 120 Hz etc.

To get the faster and better results on patients, who have uncertain pain or complaint or who can't efficiently respond to fixed frequencies.

Amplitude modulation (AM)

Preset Power Level/Minimal Power Level Ratio by time (in seconds) 5:1, 4:1, 3:1, 2:1 or 1:1 or BEE.

During acute pathologic process it is recommended to use 3:1 AM Mode and then turn on 1:1 Mode. During chronic process we start from 3:1 AM Mode and then use 5:1. BEE will apply full power automatically after 1 second delay.


Intensity - number of waveforms within one bundle (bundles per second = Frequency). There are 8 steps of intensity - from 1 to 8

High Intensity (4 and more) can be applied in case of acute inflammation or severe pain. They have a powerful local effect. Low Intensities have general effects.

Damping -waveform modulation

Damping - changing form of impulse during treatment. There are 6 Damping variants:
- Damping Sk1
- Damping Sk2
- Damping Sk3
- Damping Sk4
- Damping Var (combination of previous variants)
- Damping Off

In the acute phase of the disease with evident symptoms we apply Sk2 or Sk3. In the phase of decreasing symptoms it is recommended to apply Sk1 or Damping Off mode.

Gap variants

Gap is interval between impulses within bundle. (bundles per second = Frequency). It can be set at 10 - 80 (200 microseconds to 1600 microseconds).

We use high Gap (Z more than 40) if local signs of the disease predominate over the general ones. If general signs predominate over local ones, we use low Gap (10).

Swing mode

 Sw1 Mode include frequency modulation "on" + Intensity 3 + variable Gap (10-80) + Damping Var

We use different types of Swing Mode if we don't have ability or time to select suitable regimens for individual.

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