Assistive Product

Product Type:

Muscle Stimulator / Biofeedback Device
Technique:NMES (Neuromuscular Electrical Stimulation) / EMG (Electromyogram) - Triggered Electrostimulation

There are 5 images available for this product:

  1. Muskelstimulator, STIWELL med4
  2. Muskelstimulator, STIWELL med4 funktionelle Bewegung
  3. Muskelstimulator, STIWELL med4 EMG Inhibitation
  4. Muskelstimulator, STIWELL med4 Myosymmetrie
  5. STIWELL med4 Biofeedback PC-Spiele

Areas of Application:

- Improving the Quality of Life
- Restoring Mobility and Independence
- Rehabilitation of Motor Functions
- Increasing Motivation by Biofeedback games on the PC (visual and auditory)


- Stroke (especially if the clinical appearance shows moderate or moderate paralysis)
- Brain dysfunction

Features / Components:

- Multi-channel control allows the simulation of complex motion sequences (simultaneously and sequentially)
- 4 independent stimulation channels
- 2 measurement channels
- 8 pre-programmed programs
- 20 individually storable programs
- the electrical stimulation is triggered by the arbitrary residual muscle activity of the target muscle
- enhancement of the therapy effect by intentional EMG triggering m Possibility
- EMG inhibition prevents unwanted compensatory movement of the patient
- USB interface allows a greater representation of the EMG activity on the PC (biofeedback games)
- with spasticity control, ie a renewed stimulation is only after a relaxation of the stimulated muscle possible (below a predetermined threshold)

Price (without guarantee):

Prices are on request from the manufacturer / Distributor available.

Further Information

Product Information from the Manufacturer / Distributor:

Further Product Details

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Please contact the manufacturer or distributor.


Ottobock SE & Co. KGaA
Max-Näder-Str. 15
37115 Duderstadt
Germany Telephone: 05527 848-0 Email: Homepage:


MED−EL Elektromedizinische Geräte Gesellschaft m.b.H.
Fürstenweg 77a
6020 Innsbruck
Austria Telephone: +43 5 7788 Email: Homepage:

Technical Data:

Weight: 440 g
Dimensions (L x W x H): 3 x 9.5 x 17.5 cm
Pulse Shape: Triangle, Trapezoid, Rectangle, Biphasic
Power Supply: 11.1V Battery
EMG Range: 1- 2000 microvolts
Voltage: 80 V

Programs for denervated muscles
Current: max. 80 mA
Frequency: 0.1-50 Hz
Pulse Width: 1-250 microseconds

Innervated Muscle Programs
Current: 100 mA
Frequency: 1-140 Hz
Pulse Width: 50-500 microseconds

MF Programs
Power: 80 mA
fundamental frequency: 3 kHz
amplitude modulation frequency: 5-70 Hz

The STIWELL med4 device measures and processes the weak muscle EMG signal and compares it to a specific threshold. Electrical stimulation of the muscle, which increases its contraction, is triggered when the signal exceeds this threshold. To avoid muscle fatigue, the stimulation is followed by a minimum relaxation time.
The device gives the physician therapy-relevant information on the average stimulation intensity and the number of stimulation channels used.



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Last Update: 28 Feb 2018