schwa-medico TENStem eco basic 104041 User manual
Art.-Nr. 200506
TENStem eco basic
Transcutaneous nerve and muscle stimulator
Instruction Manual Art.-No. 100863-V03
Art.-No. 104041
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Contents
General informations..............................................................................................3
Intended use..... ......................................................................................................3
Safety instructions... ..............................................................................................3
Contra-indication ....................................................................................................4
Side effects ............................................................................................................4
Symbols ..................................................................................................................4
Technical data ........................................................................................................5
Pulse forms .............................................................................................................5
Features ..................................................................................................................6
Description .............................................................................................................7
Keypad ....................................................................................................................7
Operating the TENStem eco basic .........................................................................7
Setting date and time ............................................................................................8
Memory query mode ..............................................................................................9
Resetting the memory ............................................................................................9
Battery change .......................................................................................................9
Overview of key combinations .............................................................................10
Pre-set programs ..................................................................................................10
User programs for own settings ..........................................................................15
Electrode placements for pain programs .............................................................17
Electrode placement for dynamic stimulation .....................................................20
Classification ........................................................................................................21
Settings, modifications and repairs .....................................................................21
Warranty ...............................................................................................................21
Guarantee .............................................................................................................22
Maintenance and cleaning ..................................................................................22
Delivery content ...................................................................................................22
Frequently asked questions .................................................................................22
Accessories ..........................................................................................................23
Program overview.................................................................................................26
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General Information
Intended use
The TENStem eco basic has been designed for the generation of the
transcutaneous electrical nerve and muscle stimulation and may not be
used for any other purposes.
Safety instruction
Please read the operating instructions carefully before using the
TENStem eco basic.
- The TENStem eco basic is only to be used for stimulation purposes on one
patient at any one time.
- Only use the TENStem eco basic with original accessories.
- The size of the electrodes should to be not less than 2 cm².
- The electrodes should be positioned in such ways that the current flow will
not cross through the heart.
- Keep the TENStem eco basic away from water or other liquids. Do not
drop the TENStem eco basic, do not use it inappropriately or expose it to
extreme temperatures or high levels of humidity (not less than 10 °C or
more than 40 °C or a relative humidity of more than 90 %).
- Do not use the TENStem eco basic if it is not working properly or if it has
been damaged in any way.
- Be careful when using the TENStem eco basic near or on children. Keep the
unit away from children.
- Always store the TENStem eco basic in its case to protect it from damage
and dust.
- To avoid reciprocal interference, the TENStem eco basic should not be ope-
rated in the vicinity of other electronic devices. If this is not possible, the
various unit functions should be closely monitored during operation so that
proper use in accordance with the regulations is ensured.
- The simultaneous connection to the patient of a high frequency surgical
unit can lead to burning under the electrodes or around the probe.
- Operating close (for example 1m) to short wave and microwave units or
mobile telephone systems can cause fluctuations in the output values of
the electric current stimulation unit.
- Do not use the machine during the simultaneous operation of other ma-
chines, when driving or when asleep.
- Do not use P16 for more than 20 minutes.
4
Contra-indication
Please check with your physician before using the TENStem eco basic
if one of these apply to you:
- Patients with electronic implants such as heart pacemakers, defibrillators
or pumps
- Patients with cardiac rhythm disorders
- During pregnancy
- Patients subject to seizure disorder / epilepsy
- Patients with skin disorders in the vicinity of the electrodes
- Patients with malignant diseases in the region of application
Side effects
- Pain caused by the stimulation: The stimulation can be perceived as uncom-
fortable/painful if the electric current is too intensive or if the electrodes
have been positioned unfavorably. Unpleasant side effects can be avoided
by adjusting the intensity, using another program with other parameters
and the possible re-positioning of the electrodes.
- Skin intolerance which can result from the electrodes, the electrode gel or
the electric current impulses. The physician should be consulted in cases
of reddening, burning, itching or blistering under the electrodes or in the
vicinity of the electrodes. Slight skin reddening of short duration in the area
of the electrodes following stimulation is quite normal because blood circu-
lation has been improved by the effects of the stimulation.
- Muscular pain: If the stimulation has been too intense or too long muscular
aches in terms of sore muscle can occur. Shorten the treatment time and
the intensity of stimulation at the beginning of muscle stimulation to avoid
muscle ache.
Symbols
Attention: Read accompanying documents, especially user manual!
BF type application part. Protection against electric shocks.
The year of construction of the product follows this symbol.
The article or order number of the product follows this symbol.
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The serial number of the product follows this symbol.
The letter indicated the series.
This equipment is marked with the recycling symbol. It means that at the end
of the life of the equipment you must dispose of it separately at an appropriate
collection point and not place it in the normal domestic unsorted waste stream.
This will benefit the environment for all.
By labelling with CE certificate, the manufacturer states that the product meets
all active requirements of the regarding EU Directive. A conformation evalua-
tion process has been successfully completed. The code number of the confor-
mation evaluation process is given in accordance with the CE labelling of the
involved notified body.
Technical data
2-channel nerve and muscle stimulator with electrically insulated channels, 12
integrated constant current characteristic programs and from series C 3 user
programs for own settings.
Power supply: 6.0 V (4 x 1.5 V battery AAA type micro e. g. LR03)
or 4.8 V (4 x 1.2 V rechargeable battery AAA)
Output current: Max. 100 mA (therapy)
Approx. 30 µA (power down)
Dimensions: Approx. 140 mm x 64 mm x 28 mm
Weight: Approx. 96 g (without batteries)
Output current: 0 - 60 mA (with 1 kΩ load)
Pulse form: Positive rectangle with negative component (P1-P15)
Positive rectangle without negative component (P16)
Frequency range: Series A & B: 2 - 100 Hz / from series C: 1 - 120 Hz
Pulse width: Series A & B: 75 - 250 µs / from series C: 75 - 300 µs
Operating conditions: Temperature range: 10 °C to 40 °C
Relative humidity: 30 % to 90 %
Pulse forms
with 1kΩ load (P1-P16)
Output Power,
Voltage
Time
with ANSI/AAMI standard load with ANSI/AAMI standard load
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(P1-P15) (P16)
Voltage
Time
Output Power
Time
Voltage
Time
Output Power
Time
change in output current depending on load
500 1000 1500 2000 2500
80
60
40
20
Output Power I
mA
Resistance RL
Ω
Features
- 16 programs (12 pre-set, 4 for own settings)
- Large LCD that shows:
- Selected program
- Therapy time
- Intensity (two separated channels)
- Frequency
- Pulse width
- Automatic cut-off after 2 minutes of no use.
- Easy handling via keypad
- Battery level control
- Electrode recognition: the intensity is reduced to 0 if no
electrodes are connected or not properly connected.
- The selected program can be interlocked.
- Saving and read-out of operating parameters.
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Description
All parameters can be adjusted via the keypad
and are indicated on the large display.
1. Display
2. Menu keys
3. Modification keys to adjust parameters
and intensities
4. ON/OFF key
5. Battery compartment
6. Output sockets for the cables
Keypad
to switch the device on and off
and to stop stimulation
P to select a program
E to set the parameters
to increase the intensity
(left for channel 1, right for channel 2)
to decrease the intensity
(left for channel 1, right for channel 2)
Operating the TENStem eco basic
Starting the device
Insert the batteries into the battery compartment (no. 5). Please also read
the chapter “Battery change” for more information. All symbols appear
automatically on the display. An acoustic signal indicates that the unit is ready
for use.
Connecting electrodes and cables
First connect the 2 mm diameter male connectors of the cables (red and white
connector on each cable) to the black female connectors of the electrodes
(always 2 electrodes per cable).
Connecting the cables to the TENStem eco basic
Connect the white plug at the other end of the cable to the sockets on the upper
front face of the TENStem eco basic (no. 6). You may use the device with one
or two cables depending on the therapy.
Switching ON the TENStem eco basic
5
1
4
3
2
6
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Press to switch ON the TENStem eco basic. A double beep sounds. The
display indicates the selected program, the therapy time, the frequency, the
pulse width and the intensity.
Selecting a program
Press P until you have selected the program of your choice. Once you have
reached P15 you will return to P1.
Starting the stimulation / setting the intensities
Press the left key to increase the intensity of channel 1.
Press the right key to increase the intensity of channel 2.
Press the left key to reduce the intensity of channel 1.
Press the right key to reduce the intensity of channel 2.
It is not possible to adjust the intensity of both channels at the same time.
Stopping the stimulation
The stimulation stops automatically at the end of each program. You can stop
the stimulation manually at any time by pressing the P key or the key.
Switching OFF the device
Press the key to switch OFF the device. A single beep sounds. The
TENStem eco basic switches OFF automatically after 2 minutes if no key
pressed.
Setting date and time
(From series C)
Before you can use the memory query mode you need to set the date and time.
Pressing and holding the E key for about 3 seconds leads you to the date/time
mode. In date/time mode the LCD shows two figures: The left figure indicates
the date, the right figure indicates the time. Pressing the left key increases
the date by one day (max. 30). Pressing the left key decreases the date by
one day (min. 1).
Pressing the right key increases the time by one hour (max. 23). Pressing the
right key decreases the time by one hour (min. 0).
Press the key to save all parameters and to leave the date/time mode again.
Date and time are continuously updated.
The TENStem eco basic switches OFF automatically after two minutes if no key
is pressed. In this case none of the adjusted parameters are saved.
Memory query mode
Program
Intensity
Channel 1
Intensity
Channel 2
Stop
ON/OFF
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(From series C)
First set the date and time (see above). The memory query mode is used to read
out saved therapy data from patients. By pressing and holding the left and
E key for about 3 seconds you enter the memory query mode. If no values are
saved, the display shows “null” for about 2 seconds and the device returns to
standby mode automatically. If you have saved therapy data, the display shows
the parameters of the last therapy session as shown below:
- Used program = P01
- Frequency = 100 Hz
- Pulse width = 200 µs
- Therapy duration = 0 min 44 s
- Day of therapy = 5 (fifth day)
- Therapy session no. = 3
You can save up to 90 therapy sessions respectively the first 3 of each day.
With the left key you can return to the values of the previous day (until you
reach the first recorded day). The left key lets you proceed to the next day
(until you reach the current day). The right key brings you to the parameters
of the last therapy session of the respective day (until you reach the first ses-
sion of the respective day). The right key shows you the parameters of the
next therapy session (until you reach the last session of the respective day).
Resetting the memory
Pressing and holding the E button for about 5 seconds will delete all saved
data. The display shows “Clr” for about 2 seconds and the device can be used
for stimulation again. The TENStem eco basic switches OFF automatically after
two minutes if no key is pressed.
Battery change
If the battery voltage is less than 3.7 V, the battery symbol appears in the
display and it is necessary to insert in 4 new 1.5 V batteries (AAA, e.g. LR03).
To change batteries:
- Switch OFF the device.
- Open the battery compartment on the back side of the device
by sliding out the cover.
- Remove the old batteries.
- Insert the new batteries (check polarity).
- Close the battery compartment.
If you do not use the device for a longer period of time, always remove the
batteries. In case you use rechargeable batteries, please follow the instructions
of the charging unit. Please dispose old batteries properly!
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Overview of key combinations
Locking/Unlocking a program
Simultaneously press left and P key for 3 seconds
Changing stimulation time (From series C)
Press E key
Setting own programs (From series C)
Select P13 - P15, press E key
Entering date/time mode (From series C)
Press E key for 3 seconds
Entering memory query mode (From series C)
Simultaneously press left and E key for 3 seconds
Switching ON/OFF the sound (From series D)
Simultaneously press E key and right for 3 seconds.
Press E to change between sound on/off.
Pre-set programs
Program 1: Gate control 1
Both channels work with the same frequency and pulse width.
Frequency: 100 Hz
Pulse width: 200 µs
Therapy time: 30 min (10 to 90 min)
Indications: Acute nerve or joint pain
This program is used to treat acute neuropathic and joint pain. The effect
is immediate.
Intensity
Time
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Program 2: Gate control 2
Both channels work with the same frequency and pulse width
(see illustration Program 1).
Frequency: 80 Hz
Pulse width: 150 µs
Therapy time: 30 min (10 to 90 min)
Indications: Acute nerve or joint pain
Program 2 is similar to program 1 but works with a lower frequency and may
therefore be considered as more pleasant.
Program 3: Low frequency
Both channels work with the same frequency and pulse width
(see illustration Program 1).
Frequency: 2 Hz
Pulse width: 250 µs
Therapy time: 30 min (10 to 90 min)
Indications: Diffuse nerve, joint or muscle pain, spasms, lower back pain, neck
pain, fibromyalgia, chronic pain. This program is used to relax painful muscles
and to achieve an endorphin release. Endorphins have an analgesic effect that
lasts beyond stimulation, but you need to run program P3 to the end (30 min). To
achieve particularly good effects use kaada electrodes placement (on the hand).
Program 4: Gate control & low frequency
The channels work with different frequencies but with the same pulse width.
Therapy time 30 min (10 to 90 min)
Channel 1: Channel 2:
Frequency: 100 Hz Frequency: 2 Hz
Pulse width: 200 µs Pulse width: 200 µs
Indication: Joint pain
This program combines the effects of program 1 and 3, in case the analgesic
effect off program 3 is not strong enough.
Intensity
Time
Channel 1
Channel 2
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Program 5: Adaptation
After phase 1 the program changes automatically to phase 2.
Therapy time: 30 min (10 to 90 min)
Phase 1: Phase 2:
Frequency: 100 Hz Frequency: 2 Hz
Pulse width: 150 µs Pulse width: 200 µs
Duration: 10 min Duration: 20 min
Indications: Especially for lower back pain and sciatic pain syndrome
Program 5 starts with high frequency stimulation for 10 minutes, to give you
immediate pain relief. After 10 minutes it automatically changes to a 20
minutes low frequency stimulation with acupuncture type impulses to release
endorphins and to retain the analgesic effect even beyond stimulation.
Frequency
Time
The duration of phase 1 and 2 is adjusted in the ratio 3/8 to 5/8.
Program 6: HAN stimulation
The device continuously changes between phase 1 and phase 2.
Therapy time: 30 min (10 to 90 min)
Phase 1: Phase 2:
Frequency: 100 Hz Frequency: 2 Hz
Pulse width: 150 µs Pulse width: 200 µs
Duration: 3 s Duration: 3 s
Indications: All kinds of pain
This program combines the analgesic effect of high frequency stimulation with
endorphin release caused by low frequency stimulation. Every 3 seconds it
changes between a “pins and needles” stimulation and a pulsing stimulation.
Frequency
Time
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Program 7: Burst
This generates pulse packages (Burst).
Frequency: 100 Hz
Pulse width: 150 µs
Modulation: Burst 0.5 s (0.25 s + 0.25 s)
Therapy time: 30 min (10 to 90 min)
Indications: Diffuse nerve, joint or muscle pain, spasms, lower back pain,
neck pain, fibromyalgia.
This program covers the same indications as program 3, but the stimulation
is often considered as more comfortable and pleasant than the normal low
frequency stimulation.
Pulses
Time
working
phase working
phase
Pause
Program 8: Modulation
The frequency continuously changes within the frequency limits.
The pulse width adapts accordingly.
Minimal frequency: 2 Hz (Pulse width: 200 µs)
Maximal frequency: 80 Hz (Pulse width: 100 µs)
Modulation duration: 7.5 s (2 Hz 80 Hz)
Therapy time: 30 min (10 to 90 min)
Indications: Acute nerve or joint pain (as an alternative to P1 and P2)
If you feel that the analgesic effect of program 1 or 2 is decreasing, change to
program 8. With frequency modulation the body does not become accustomed
to the stimulation.
Program 9: Muscle stimulation
The intensity continuously changes according to the indicated parameters.
Frequency: 50 Hz Pulse width: 250 µs
Rising ramp: 2 s Working phase: 5 s
Falling ramp: 1 s Pause: 12 s
Therapy time: 30 min (10 to 90 min)
Indications: Prevention of muscular atrophy, muscle strengthening
This program is suitable to maintain the muscle volume, e.g. during injury or
recovery, or to avoid muscle atrophy. In case of muscle atrophy, do not
stimulate more than once a day for the first month. Certainly program 9 can
also be used to strengthen a healthy muscle.
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working time
Pause
rising time
falling time
Intensity
Time
Program 10: Gate control dynamic 1
The intensity continuously changes and the two channels operate alternately
(massage effect).
Frequency: 80 Hz
Pulse width: 150 µs
Intensity modulation: 1 s rise, 1 s fall
Therapy time: 30 min (10 to 90 min)
Indications: Especially for acute back pain, lower back pain, sciatic pain
This program is recommended for the treatment of back pain. The massage
effect provides a comfortable and pleasant stimulation. The so called Gate
Control reflex which is achieved through this kind of stimulation is a natural
reflex that you achieve e.g. by rubbing a painful area with your hands to calm
acute pain. To achieve the massage effect it is essential to use both channels
of the TENStem eco basic.
Intensity
Time
Program 11: Gate control dynamic 2
The intensity continuously changes two channels operate alternately
(massage effect). See illustration program 10.
Frequency: 80 Hz
Pulse width: 150 µs
Intensity modulation: 0.25 s rise, 0.25 s fall
Therapy time: 30 min (10 to 90 min)
Indications: Heavy legs (venous return)
Program 11 is similar to program 10, but the movement of the massage waves
is faster. It is used to improve the venous return for patients who suffer from
heavy legs. To achieve the massage effect it is essential to use both channels
of the TENStem eco basic.
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Program 12: Deep TENS
Program 12 works just like program 1. However, instead of just one pulse, four
short pulses are generated.
Frequency: 100 Hz
Pulse width: 75 µs
Modulation: four pulses in a group, duration of periods 275 µs
Therapy time: 30 min (10 to 90 min)
This program could be called the last recourse if none of the other
programs give analgesic effect. However, because of the high frequency this
program is often felt as less pleasant. Furthermore, high frequency stimulation
needs more battery power.
Intensity
Time
User programs for own settings
(From series C)
Program 13: Gate control
Both channels work with the same frequency and pulse width.
Frequency: 1 - 120 Hz
Pulse width: 75 - 300 µs
Therapy time: 10 - 90 min
Intensity
Time
Program 14: Muscle stimulation
The intensity continuously changes according to the indicated parameters.
Frequency: 1 - 120 Hz
Pulse width: 75 - 300 µs
Rising ramp: 2 s
Working phase: 5 s
Falling ramp: 1 s
Pause: 12 s
Therapy time: 10 - 90 min
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working time
Pause
rising time
falling time
Intensity
Time
Program 15: Gate control dynamic
The intensity continuously changes and the two channels operate alternately
(massage effect).
Frequency: 1 - 120 Hz
Pulse width: 75 - 300 µs
Intensity modulation: 1 s rise, 1 s fall
Therapy time: 10 - 90 min
Intensity
Time
Program 16: Iontophoresis, Nerv block (from series E)
Both channels work with the same frequency and pulse width. The current is
monophasic.
We do not recommend to use P16 for more than 20 minutes. Check the skin
underneath the electrodes after the stimulation.
Frequency: 1 - 120 Hz
Pulse width: 75 - 300 µs
Therapy time: 20 min
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Electrode placements for pain programs
Back pain
Shoulder pain
Epicondylitis ulnaris Epicondylitis radialis
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Arthrosis (hip) Kaada stimulation (1 channel only)
right handed left handed
Blue
Red
Blue
Red
Sciatic pain
Gonarthrosis/knee pain Ankle joint pain
2
2
1
1
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Trigeminus neuralgia
Migraine Tension headache
Polyarthritis
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Polyneuropathy
Carpal tunnel syndrome Pain of achilles tendon/heel pain
Electrode placement for dynamic
stimulation (P10, P11, P15)
The stimulation is not administered simultaneously on both channels. The
current flowes from one electrode to the other just like a wave undulating
on the body. This kind of stimulation is far more comfortable than traditional
neuro-muscular stimulation. Dynamic stimulation can be used with high
frequency parameters for a improved pain control or with low frequency
parameters for optimized muscle stimulation. This treatment method also has
an enhanced effect on lymphatic drainage stimulation.
The placement of electrodes for dynamic stimulation depends on the
direction of stimulation (rising/falling stimulation or sideways stimulation)
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