Transcutaneous Electrical
Nerve Stimulation (TENS)
Model SW-1000
Operation Manual
Read this manual before operating the TENS device
Save this manual for future use.
The most current version of this manual can be found online at
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TABLE OF CONTENTS
INTRODUCTION TO TENS
INDICATIONS AND CONTRAINDICATIONS
WARNINGS
01
01
02
03
04
04
05
05
06
06
07
08
09
09
09
10
10
PRECAUTIONS/ADVERSE REACTIONS
ABOUT THIS DEVICE
UNIT CONTROLS
ATTACHING THE LEAD WIRES
ELECTRODE SELECTION AND CARE
TIPS FOR SKIN CARE
CONNECTING THE TENS DEVICE
BATTERY INFORMATION
CARING FOR YOUR TENS DEVICE
TROUBLESHOOTING
WARRANTY
SYSTEM COMPONENTS
TECHNICAL SPECIFICATIONS
OUTPUT SPECIFICATIONS
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INTRODUCTION TO TENS
What is Pain?
Pain is the body’s warning system. Pain is important because it signals an
unusual condition in the body and alerts us before additional damage or injury
can occur. TENS was developed to help relieve some types of chronic and acute
pain.
How does TENS work?
TENS is a method of treating pain that is non-invasive and does not use
pharmaceuticals.
The TENS device sends impulses through the skin that stimulate the nerve
(or nerves) in the treatment area. In many cases this stimulation will greatly
reduce or eliminate the pain sensation felt by masking the original pain
message sent to the brain.
It is also believed that TENS stimulation helps release endorphins into the
blood stream thereby further reducing pain.
TENS devices are clinically proven to be useful in pain management for
many patients. By reading this manual and carefully following the
treatment instructions given to you by your clinician, you can attain the
maximum benefit from your TENS device.
INDICATIONS AND CONTRAINDICATIONS
Read the operation manual before using TENS
Federal law (USA) restricts this device to sale by or on the order of a physi-
cian.
Indications
Transcutaneous Electrical Nerve Stimulation (TENS) is indicated to be used
under a physician’s prescription for the symptomatic relief and management
of chronic (long term) pain and for the treatment of postoperative or
posttraumatic pain.
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Contraindications
-
Patients with implanted electronic devices ( for example, a pacemaker ) or
metallic implants should not undergo TENS treatment without first
consulting a physician.
-
-
Any electrode placement that applies current to the carotid (neck) region.
Any electrode placement that causes current to flow transcerebrally
(through the head).
-
The use of TENS whenever pain symptoms are undiagnosed, and the
etiology is unknown.
SAFETY
Always follow basic safety precautions, including the following:
WARNING: Indicates a potential hazard situation or unsafe practice that,
if not avoided, could result in death or serious personal injury.
Caution: Indicates a potential hazard or unsafe practice that, if not
avoided, could result in minor personal injury or product/property damage.
WARNINGS
WARNING: TENS devices must be kept out of reach of children.
WARNING: The safety of TENS devices for use during pregnancy or
delivery has not been established.
WARNING: TENS is not effective for pain of central origin (headaches).
WARNING: If TENS treatment becomes ineffective or unpleasant,
stimulation should be discontinued until evaluated by a physician.
WARNING: Avoid adjusting controls while operating machinery or vehicles.
WARNING: AlwaysturntheTENSdeviceOFFbeforeapplyingorremovingelectrodes.
WARNING: TENS may interfere with electronic monitoring
equipment (ECGmonitors/alarms).
WARNING: Electrodes should not be placed over the eyes, in the mouth,
or internally.
WARNING: TENS devices have no curative value.
WARNING: TENS is a symptomatic treatment and as such suppresses the
sensation if pain which would otherwise serve as a protective mechanism.
02
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PRECAUTIONS/ADVERSE REACTIONS
Caution: Isolated cases of skin irritation may occur at the site of electrode
placement during long term application.
Caution: Effectiveness is highly dependent upon patient selection by a
person qualified in the management of pain patients.
Caution: Skin irritation and electrode burns are potential adverse reactions.
Lead Connector
Intensity Controls
Indicator Light
Pulse Width Control
Mode Selector
MODE
10
180
100
60
230
250
60
115
150
Pulse Rate Control
1
(uS)
PULSE WIDTH
(Hz)
PULSE RATE
Battery Compartment
Battery Strip
03
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ABOUT THIS DEVICE
Your TENS device is a battery operated device that includes two controllable
output channels. This TENS device creates electrical impulses whose ampli-
tude, duration, and modulation can be altered with the controls or switches.
The TENS intensity controls are very easy to use, and the slide cover protects
accidental changes in settings.
UNIT CONTROLS
Panel Cover
A cover which conceals the controls for the Pulse Width, Pulse Rate, and
Mode Selector. Press the top portion of the cover and pull down in order to
open the cover.
Intensity
The intensity knobs located on the top of the unit affect the strength of the
stimulation and also function as ON/OFF controls.
Mode
The Mode switch is used to select the type of treatment utilized. The three
modes are Burst (B), Continuous (C), and Modulation (M).
Pulse Width
The Pulse Width knob regulates the pulse width for both channels.
Pulse Rate
The Pulse Rate knob regulates the number of pulses per second for both chan-
nels.
04
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Mode Functions
Burst (B) releases individual bursts twice per second, pulse width is
adjustable and the pulse rate is set at 100Hz per second.
Continuous (C) stimulation is delivered continuously at the settings deter-
mined by intensity, rate, and width knobs.
Modulation (M) pulse width decreases the pulse width down to 60% of the
original width setting. This decreased pulse width is maintained for 1.5
seconds before returning to the original width setting, which is maintained for
3.5 seconds. The cycle is then repeated. The intensity and pulse rate are
adjustable.
ATTACHING THE LEAD WIRES
The lead wires provided with the TENS device insert into the ports located on
top of the unit. Holding the insulated portion of the connector, push the plug
end of the wire into one of the ports; one or two sets of the wires may be
used. After connecting the wires to the stimulator, attach each wire to an
electrode.
Lead wires provided with the TENS device are compliant with mandatory
compliance standards set forth by FDA.
Caution: Use care when plugging and unplugging the wires. Pulling on the
lead wire may cause wire breakage.
WARNING: Never insert the plug of the lead wire into an AC power supply
socket. Personal injury and/or damage to the TENS unit could occur.
ELECTRODE SELECTION AND CARE
Use the electrodes as prescribed.
Follow application procedures outlined in electrode packaging to maintain
stimulation and prevent skin irritation. The electrode packaging provides
instructions for care, maintenance and proper storage of electrodes.
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TIPS FOR SKIN CARE
Good skin care is important for effective and comfortable use of your TENS
device.
Always clean the electrode site with mild soap and water solution, rinse well
and dry thoroughly prior to any electrode application.
-
-
-
Any excess hair should be clipped, not shaved, to ensure good electrode
contact with the skin.
If a skin treatment is recommended by your physician, apply the skin
treatment as recommended, let dry, and apply electrodes as directed.
Following these recommendations will both reduce the chance of skin
irritation and extend the life of your electrodes.
-
Avoid excessive stretching of the skin when applying electrodes. Proper
application is best accomplished by applying the electrode then smoothly
pressing it in place from the center outward.
-
-
When removing electrodes, always remove by pulling in the direction of
hair growth.
It may be helpful to rub skin lotion on electrode placement area when not
wearing electrodes.
CONNECTING THE TENS DEVICE
1. Prepare the Skin
Prepare the skin as previously discussed and according to instructions
provided with your electrodes. Before attaching the electrodes, identify the
area which your clinician has recommended for electrode placement.
2. Connect lead wires to the electrodes
Connect the lead wires to the electrodes before applying the electrodes to the
skin.
WARNING: Ensure both intensity controls for Channel 1 and 2 are
turned to the “OFF” position.
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3. Place electrodes on the skin
Place the electrodes on the skin as recommended by your clinician.
4. Insert the Lead Wire Connector to the TENS device
Plug the end of the lead wire into the lead connector port to be used,
pushing plug in as far as it will go.
5. Select Treatment Settings
Ensure the unit is set to the proper settings (Pulse Width, Pulse Rate,
and Mode Selector), recommended by your physician.
6. Adjusting Channel Intensity Control
Locate the intensity control knob at the top of the unit. Turn channel 1 or 2
clockwise. The indicator light will light up when unit is in operation. Slowly
turn the channel control in a clockwise direction until you reach the intensity
recommended by your medical professional. Repeat for the other channel if
both channels are to be used.
If the stimulation levels are uncomfortable or become uncomfortable, reduce
the stimulation amplitude to a comfortable level or cease stimulation and
contact your physician.
BATTERY INFORMATION
When the yellow indicator light located on the front of the unit will no longer
light, the battery has become too weak to power the unit and it is time to
replace the battery. At this point the unit will shut off until the battery is
replaced. Dispose of the old battery according to local guidelines and
regulations.
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Changing the battery
When the yellow indicator light on the front of the unit does not light up
when the unit is turned on, the battery should be replaced.
1. Remove the panel cover by pressing on the top and sliding down until it
is completely removed from the unit. This will reveal the battery compartment.
2. Remove the discharged battery from the device.
3. Place a new battery in the battery compartment. Note the proper polarity
alignment indicated on the battery and the compartment.
CARING FOR YOUR TENS DEVICE
Your TENS device may be cleaned by wiping gently with a damp cloth
moistened with mild soap and water. Never immerse the device in water or
other liquids.
Wipe lead wires with a damp cloth moistened with soap and water.
To properly store the TENS device for extended period of time, remove the
battery from the unit. Place the unit and accessories in the carrying case
and store in a cool, dry location.
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TROUBLESHOOTING
If the TENS device does not function properly:
1. Make sure the battery is properly installed or replace the battery. Be sure
to observe proper polarity markings when replacing the battery. If the yellow
light on the front of the unit does not stay lit when the unit is turned on,
replace the battery and check again.
2. If the ON/OFF Indicator Light is flashing and no stimulation is felt, check
to ensure lead wires are properly connected and the electrodes are in place.
If the unit appears to be functioning and no stimulation is felt, the lead wires
or electrodes may need to be replaced.
3. If the battery appears to be charged and the unit is not functioning, turn
both lntensity Control Knobs to the OFF position(counter clockwise). Then
gradually turn the lntensity Control Knob to the on position.
If any other problems occur, contact an authorized GF Health Products, Inc.
distributor. Do not try to repair a defective device.
WARRANTY
This TENS device carries three years warranty from the date of purchase.
The warranty applies to the TENS device and necessary parts and labor
relating thereto. GF Health Products, Inc. reserves the right to replace
or repair the unit at their discretion.
The warranty does not apply to damage resulting from failure to follow the
operating instructions, accidents, abuse, alteration or disassembly by unau-
thorized individuals.
SYSTEM COMPONENTS
Your TENS device may include the following components or accessories:
- TENS unit
- Electrodes
- Hard case
- Lead wires
- Battery
- Operation Manual
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TECHNICAL SPECIFICATIONS
Channel:
Modes of Operations:
Pulse Intensity:
Dual, isolated between channels
Burst, Continuous, Modulation
Adjustable 0-80mA peak into 500 ohm
load each channel, constant current
1Hz-150Hz (adjustable)
Pulse Rate:
Pulse Width:
Burst Mode:
Wave Form:
Voltage:
60uS-250uS (adjustable)
Burst consists 2 burst per sec at 100 Hz
Asymmetrical Bi-Phasic square pulse
0-100 Volt (open current)
Power Source:
Dimensions:
Weight:
9 volt battery
95(H) x 65(W) x 23.5 (T) mm
115 grams (battery included)
OUTPUT SPECIFICATIONS
Adj. 0-80
Adj. 0-80
Adj. 60-250
Adj. 60-250
Adj. 1-150
N/A
N/A
100Hz fixed
2 burst per sec.
Adj. 0-80
Adj. 1-150
Note: All values have ±20% tolerance.
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USA, Corporate Headquarters:
GF Health Products, Inc.
2935 Northeast Parkway
Atlanta, Georgia 30360
telephone: 800-347-5678, 770-447-1609
fax: 800-726-0601, 678-291-3232
SW-1000-INS-LAB-RevB09
GF Health Products, Inc., December 2009
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