LGMedSupply LG-3000 User manual

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INDEX
Chapter Contents Page
Index ..................................................................... 1
1. Introduction.......................................................... 2
2. Cautions ............................................................... 3
3. Warnings .............................................................. 4
4. General Description........................................... 5
5. Construction......................................................... 5
6. Technical Specifications .................................. 6
7. ReplaceableParts ............................................. 7
8. Accessories.......................................................... 7
9. Graphic Symbols ................................................ 8
10. ParameterControls ............................................ 8
11. Attachment of ElectrodesLead Wires............ 10
12. LeadWireMaintenance..................................... 10
13. Electrode Options ............................................... 11
14. ElectrodePlacement ......................................... 11
15. Tips ForSkin Care .............................................. 12
16. Application of Re-usableSelf Adhesive
Electrodes ............................................................ 13
17. Adjusting the Controls ........................................ 14
18. BatteryInformation ............................................ 17
19. Maintenance, Transportation and Storage
of TENS Device .................................................. 19
20. SafetyControl..................................................... 20
21. Malfunctions ........................................................ 20
22. ConformitytoSafetyStandards ...................... 21
23. Warranty............................................................... 21

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patient feels. Pain relief varies by individual patient, mode selected
for therapy, and the type of pain. In many patients, the reduction or
elimination of pain lasts longer than the actual period of stimulation
(sometimes as much as threeto fourtimes longer). In others, painis
onlymodified whilestimulation actuallyoccurs. You may discuss
thiswithyour physician or therapist.
Chapter 2 : CAUTIONS
1. Precautions:
Isolated cases of skin irritation may occurat the site of electrode
placement following logn-term application. Effectiveness is highly
dependent upon patient selection bya person qualified in the
managementofpain patients.
2. Contradictions:
TENS devices can affect the operation of demand type cardiac
pacemakers. TENS is not recommended for patients with known
heartdisease withoutphysicalevaluationofrisk. Donot use TENS
on the carotidsinus(neck) region. Do no apply TENS for
undiagnosed painsyndromes untiletiologyisestablished. Donot
stimulate on thesite that may cause current to flow transcerebrally
(through the head).
3. Adverse Reactions
Possibleallergictogel,skin irritation and electrodeburnarepotential
adverse reactions.
4. Readoperation manual beforeuse of TENS.
5. Weemphasize thatpatient withan implantedelectronic device (for
example,apacemaker)should notundergoTENStreatment without
first consulting adoctor. Thesame applies topatients with any
metallicimplants.
6. If TENS therapy becomes ineffective or unpleasant, stimulation
should be discontinueduntilits useis reevaluatedbythephysician
ortherapist.
7. Avoid adjusting controls whileoperating machinery orvehicles.
8. Turn the T.E.N.S.off before applying or removing electrodes.
Chapter 1 : INTRODUCTION
EXPLANATION OF PAIN
Painis awarning systemand the body smethod oftelling usthat
something iswrong. Painisimportant; withoutit abnormal conditions
may go undetected,causing damage or injury tovitalparts ofour
bodies.
Eventhoughpainisanecessarywarningsignal oftraumaormalfunction
inthe body,nature mayhavegonetoo farinits design.Asidefromits
valueindiagnosis,long-lasting persistentpainservesnousefulpurpose.
Paindoes not begin until acodedmessagetravels tothe brainwhere
itis decoded, analyzed,andthenreacted to.Thepainmessage
travelsfromthe injured area along the smallnerves leading tothe
spinal cord. Here the message is switched to differentnerves that
travel up thespinal cordtothe brain. Thepain message isthen
interpreted, referred back and thepain is felt.
EXPLANATION OF TENS
Transcutaneous ElectricalNerve Stimulationis a non-invasive, drug-
free method of controlling pain. TENS uses tiny electrical impulses
sentthrough theskin to nerves to modify yourpainperception.TENS
doesnotcureanyphysiological problem;itonly helps control thepain.
TENSdoesnotworkfor everyone;however,inmost patients it is
effective inreducing or eliminating the pain, allowing for areturn to
normalactivity.
HOWTENSWORKS
Thereis nothing “magic”aboutTranscutaneousElectricalNerve
Stimulation (TENS).TENSisintended to be used torelievepain.The
TENSunit sendscomfortable impulsesthroughtheskinthatstimulate
thenerve(ornerves)inthetreatmentarea. In manycases, this
stimulation will greatlyreduceor eliminatethe painsensationthe

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Chapter 4 : GENERALDESCRIPTION
TheLG-3000Analog TENSUnit isa battery operatedpulse generator
that sends electrical impulses electrodes to the body and reach the
nervescausing pain.The deviceisprovided withtwo controllable
output channels,each independent of each other.An electrode pair
can be connected toeach output channel.
The electronics of the LG-3000 Analog TENS Unitcreate electrical
impulseswhose Intensity, duration,numberpersecond and
modulationmaybe alteredwith the controls orswitches. Dial controls
arevery easy touse and the slidecoverprevents accidental changes
in the setting.
Chapter 5 : CONSTRUCTION
9. T.E.N.S. devices have no AP/APG protection.
Donotuseit inthepresence ofexplosiveatmosphereandflammable
mixture.
Chapter 3 : WARNINGS
1. Caution shouldbe used inapplying TENS to patients suspected
of having heart disease. Further clinicaldata is needed to show
thereareno adverse results.
2. Thesafety of TENSdevices for useduring pregnancy or birthhas
not been established.
Do not use TENS during pregnancy.
3. TENS is not effectivefor pain of central origin. (This includes
headache.)
4. TENS devices should be used only under the continued
supervision of a physician.
5. TENS devices have no curative value.
6. TENS isasymptomatic treatmentand assuchsuppresses the
sensation of pain which would otherwise serveas a protective
mechanism.
7. Electronicmonitoringequipment(such asECG monitorsand ECG
alarms)may notoperateproperly when TENSstimulation isinuse.
8. There should be a prominentlyplaced statement warning that
stimulus delivered by this device may be sufficient to cause
electrocution. Electricalcurrent of this magnitudemust not flow
through the throaxbecauseit may cause a cardiac arrhythmia.
9. Donot place electrodes on thefront of the throat as spasmof the
Laryngeal and Pharyngeal muscle may occur.
10. Care should be taken sothat when operating potentially dangerous
machinery thestimulator controls are not changedabruptly.
11. Electrodes should not be placed over the eyes, in themouth, or
internally.
12. Keep this device out ofthe reach of children.
13. Caution: Federallaw restricts thisdevice to sale by oronthe order
of aphysician

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Chapter 7 : REPLACEABLE PARTS
The replaceablepartsand accessoriesofT.E.N.S. devices are as
given below-Exceptleads, electrodes andbattery, batterycase cover,
please do not try to replace the other parts of adevice.
NO. PARTS
01 ELECTRODES LEADS
02 ELECTRODES
03 9VBATTERY ,TYPE 6F22
04 BELT CLIP
05 BATTERYCASE COVER
06 LEAD CONNECTOR
07 MAIN PCB
08 INTENSITY KNOB
09 B-N-M SWITCH
10 PULSE WIDTHKNOB
11 PULSE RATE KNOB
Chapter 8 : ACCESSORIES
Eachset LG-3000 Analog TENSUnitare completed withstandard
accessories and standard labelas given below
I. Accessories
REF.NO. DESCRIPTION Q TY
1. KS4040 40 X4 0 mm Adhesive Electrodes 4 pieces
2. KE-24 Electrodes Leads 2 pieces
3. GC-01 9VBattery, type 6F22 1 piece
4. Instruction Manual 1 piece
5. CarryingCase 1 piece
Chapter 6 : TECHNICAL SPECIFICATIONS
Thetechnical specification details of LG-3000 AnalogTENS Unit are
as follows.
MECHANISM TECHNICALDESCRIPTION
1. Channel Dual,isolated between channels
2. PulseAmpulitude Adjustable, 0-80mA
peak into500 ohmload each channel
3. Pulse Rate Adjustable, from2 to 150 Hz
4. Pulse Width Adjustable,from 30 to 260
microseconds
5. Modulation Mode Pulse rate is automaticallyvariedin a
cyclic pattern over an interval of
nominally 10Seconds.(in max150Hz)
Pulserate decreases linearly overa
periodof 4 seconds fromthe control
setting value to a value which is 40%
less. The lower pulseratewill continue
for1 second. Thenincrease linearly
over a 4 seconds period to its original
value. Theoriginal pulserate will
continue for 1 second. The cycle is
then repeated.
6. Burst Mode Bursts occurtwice verysecond.
Pulse width(adjustable), frequency =
100 Hz
7. Wave Form Asymmetrical Bi-Phasic SquarePulse
8. Timer 15, 30 minutes or Continue
9. Voltage 0 to40 V (Load : 500 ohm)
10. Max. Charge per pulse 20 micro-coulombs
11. Power Supply One 9Volt Battery.(alkaline, or nickel-
cadmiumrechargable)
12 BatteryLife Approximately 50 hoursatnominal
settings.
13 Size 95(H)x65(W) x 23.5(T) mm
14 Weight 115 grams(battery included)

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Despite above recommendations, these individualpatientsmay
requireslight variations of theabove settings, according to thenature
oftheircondition.
TREATMENTMODE
NormalorConventional TENSoffersthepractitionerscompletecontrol
over all thevarious treatmentparameters of the instrument.
Burst Modeis analogous to theLow Rate TENStechniqueexcept the
low frequencyindividual pulsesarereplaced byindividual“bursts”of7-
10 individual pulses. It is thus a combination of Conventional TENS
andLow Rate TENS. In Burst Mode, thetreatment frequency is fixed
bythe instrumentandisnotadjustablewiththeFrequencyRate control.
ModulatedModeattemptsto preventnerve accommodationby
continuously cycling thetreatment intensity. When using Modulated
Mode increasethe intensityonlywhen the unitis atthe maximum
intensity of the modulationcycle. If the intensity is increasedduring a
lowintensity period of the cycle, the patient may turn up the control
very slowly, so that they mayfeeltheintensity any higher.
TIME DURATION
The onset ofpain relief should occur shortly after theintensitysetting
has been determined. However, in somecases, pain relief may take
aslong as30 minutestoachieve.TENSunits are typically operated for
longperiods of time,withaminimum of 20–30 minutes and in some
post-operation protocols, as long as 36 hours.
Ingeneral,pain reliefwill diminishwithin30 minutesofthe cessationof
stimulation.
Chapter 9 : GRAPHIC SYMBOLS
1. Note Operating Instructions
2. Degree of Electrical ProtectionBF
3. Do not insert the pluginto AC power supply socket.
4. Direct Current (DC power source)
Chapter 10 : PARAMETER CONTROLS
PULSEDURATION
Widerpulse duration settings will deliver stronger stimulation for any
givenintensitysetting. As mentionedinthe Controlssection,by using
acombination ofintensityand pulseduration,itisfeltthatvariouspulse
widths are capable of stimulating different groups of nerve fibres.
Thechoice of whichpulse duration to useispartiallydependent upon
the Treatment Mode and Protocolselected (refer to the appropriate
section).
PULSERATE
The Pulse Rate (hertz or pulses per second) chosendepends greatly
upon the type of electrode placement given to the patient.
When using contiguous and dermatomeelectrode placements (i.e.
stimulating directlythroughthe areaofpainor localizedenervation),a
quick pulse rate (setting greater than 80Hz onthe Pulse Rate Control)
isdesired.The patientshould notperceive individual pulses but rather
have the sensation of steady continuous stimulation.

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Chapter 13 : ELECTRODE OPTIONS
Theelectrodes aredisposableandshould beroutinely replaced
after 3-4uses. If youare unsureofyour electrodeadhesive
properties,order replacement electrodes.Replacement electrodes
should be re-ordered through LGMedSupply.com(888-633-7360) to
ensure properquality.Followapplication procedures outlinedin
electrodepacking,to maintain optimalstimulation andtopreventskin
irritation.Chapter14 : ELECTRODE PLACEMENT
The placement of electrodes can be one of the most important
parameters in achievingsuccess with TENStherapy.Of utmost
importance isthe willingness ofthecliniciantotry thevariousstylesof
electrode placement to find which method best fitsthe needs of the
individual patient.
Every patientresponds to electrical stimulation differentlyand their
needs mayvaryfromthe conventionalsettingssuggestedhere. If the
initialresults are not positive, feelfreeto experiment. Oncean
acceptable placement has been achieved, markdown the electrodes
sites and thesettings on the patients referencesheet of this manual,
sothepatient caneasily continuetreatment at home.
CONTIGUOUS PLACEMENT
This isthemost common placement technique.It involvesplacing the
electrodes alongsidetheareaof localized pain site, in such awayas
to direct the flowof current through or around the area of pain.
In a single channel application, this would involve placing each pad
on eithersideofthe pain siteifthe pain is localizedon alimb and deep
within the tissue.Padplacementon the posterior andanterioraspects
ofthe affectedlimbwillallowthecurrenttoflowcompletely through the
limb and thus through the endogenous pain site.
Chapter 11 : ATTACHMENT OF ELECTRODE LEAD
WIRES
Thewiresprovided withthe system insertinto the jack sockets located
on top of the device. Holding the insulated portion of the connector,
push theplugend of the wireintoone of thejacks (see drawing); one
ortwosets of wires may beused.
Afterconnecting the wires to the stimulator, attach each wire to an
electrode. Use care when you plug and unplug the wires. Jerking
the wire instead of holding the insulated connector body may cause
wire breakage.
CAUTION
Donotinserttheplugofthepatient lead wireintotheACpower supply
socket.
Chapter12: LEAD WIREMAINTENANCE
Cleanthewires by wipingwith a damp cloth. Coating them lightlywith
talcumpowder will reducetangling and prolong life.

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Chapter 16 APPLICATION OF RE-USABLE SELF
ADHESIVEELECTRODES
Application
1. Clean anddrytheskin atthe prescribed areathoroughlywith soap
and water prior to application of electrodes.
2. Insert the lead wire into the pin connector on the pre-wired
electrodes.
3. Remove the electrodes fromthe protective liner andapplythe
electrodes firmlytothetreatment site.
Removal
1. Lift at theedge ofelectrodesand peel; donot pull on the leadwires
because it maydamage the electrodes.
2. Place the electrodes on the liner andremovethe lead wire by
twisting andpullingat thesame time.
Care and Storage
1. Between uses, store theelectrodes in theresealed bagin a cool
dry place.
2. It maybehelpful toimprove repeatedapplication by spreadinga
few drops of coldwater over theadhesive and turn the surface up
toairdry.Over Saturation withwater will reducethe adhesive
properties.
Withatwochannelsapplication, the clinician may either directthe
currentflow tocross through the painsiteor,inwhatis called the
“bracket”method allowingthe current flow oneither side ofthepainful
area,generally throughthenervebranchesthat feed intothepainsite.
Chapter 15 : TIPS FOR SKIN CARE
Toavoid skinirritation, especiallyif you have sensitive skin, follow
these suggestions:
1. Wash thearea of skin where you will beplacing the electrodes,
using mildsoap and waterbefore applying electrodes, andafter
takingthemoff. Besure to rinse soap off thoroughlyanddry skin
well.
2. Excess hairmaybeclippedwith scissors; donotshave stimulation
area.
3. Wipethe area with the skin preparation your clinicianhas
recommended. Let this dry. Apply electrodes as directed.
4. Many skinproblemsarisefromthe“pullingstress”from adhesive
patches that are excessively stretched across the skin during
application. To preventthis, apply electrodes from centre outward;
avoid stretching over the skin.
5. Tominimize “pulling stress”,tapeextralengthsof lead wires to the
skin in a loop to prevent tugging onelectrodes.
6. Whenremovingelectrodes,always removebypulling in thedirection
of hair growth.
7. It may be helpfulto rub skin lotion onelectrode placement area
when not wearing electrodes.
8.Never applyelectrodes over irritated or broken skin.

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Byturning the controls clockwise, the appropriate channel is
switched on and the impulse display led will illuminate and
begin to pulseaccording to the frequencyset.
The current strength of theimpulses transmitted to the electrodes
increasesfurther whenthe controlis turned clockwise.
Toreduce the current strength or switch the deviceoff , turn the
controls counter clockwiseto the requiredsetting oroff- position.
4. Lead Connector
Connection of the electrodes is made with two-lead connector.
The device must be switched off before connecting the cables.
Both intensity controlsmust be atthe Off position.Electrodesmust
bepressedfirmlyontheskin.
Important
1. Do not apply to broken skin.
2. The electrodes should be discarded when they are no longer
adhering.
3. Theelectrodes areintended for singlepatient use only.
4. If irritation occurs, discontinue useandconsult yourclinician.
5. Read theinstruction foruse of self-adhesive electrodes before
application.
Chapter 17 : ADJUSTING THE CONTROLS
1. Slide Cover:
A slide-on panel cover coversthe
controls for PulseWidth, Pulse Rate,
ModeSelectorand ModulationSelector.
Your medical professional may wish to
set thesecontrols for you and request
that you leave the cover inplace.
2. Display Led
Each of the leds illuminates whenever
the electronics of the device create a current impulse. Due to the
capacity ofthehumaneye,theillumination ofthelamp canonly be
recognized up toafrequency of approximately30 Hz.Athigher
frequencies,the lamp will appear to be constantly illuminated.
3. On/OffSwitchand IntensityControl :
If bothcontrols are inthe off-position (whitemarkings on the
housing),thedeviceis switched off.

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8. TimerControl
Treatment time ofTENS can bepreset with Timer Control.
This switch has 3 positions, 15, 30andC(Continue). .
Push theTimerControl untilengagedin position desired.
9. Check/Replace the Battery:
Over time,in order toensurethefunctional
safety of TENS, changing the battery is
necessary.
1. Makesure that both intensity
controls are switched tooff position.
2. Slide the battery compartment cover
and remove.
3. Removethe battery fromthe
compartment.
4. Insertthebatteryintothecompartment.
Note the polarity indicated on the
battery and in the compartment.
5. Replace the battery compartment
cover and slide to close
Chapter 18 : BATTERY INFORMATION
LG-3000Analog TENS Unit can be used witha rechargeable battery
when necessary.
Ifyou use rechargeable batteries, pleasefollowthe instructions.
5. ModeControl
Exposethe controls by sliding front cover down from top of unit.
Thisswitchhas 3 positions: BforBurst stimulation, N for Constant
stimulation, and M for modulationstimulation. Push theMode
Selector until engagedinpositiondesired.
6. Pulse Rate Control:
Thisdial determines how manyelectricalimpulsesareapplied
throughtheskin eachsecond.Byturningthesecontrols,thenumber
of current impulses per second(Hz)forbothchannels canbe
continually adjusted. Unless otherwise instructed, turn thepulse
rate control to the 70-120 Hz range.
7. Pulse Width Control:
This dial adjusts the length of time each electricalsignalis applied
throughthe skin, which controls the strengthandsensationof the
stimulation.If noinstructionsregardingthe pulse width aregiven in
therapy, set the control tothe suggested 70-120 uS setting.