TENS-2500(WITH ADJUSTABLE TIMER)

DUAL CHANNEL STIMULATOR KITA MAJOR STEP IN PAIN MANAGEMENT

INSTRUCTION MANUAL

PRESCRIBING INFORMATIONCaution: Federal law (USA) restricts this device to sale by or on the order of a physician. Keep outofreach of children.Indications: Transcutaneous Electronic Nerve Stimulation (TENS) devices are used for the symptomaticrelief and management of chronic (long-term) intractable pain and as an adjunctive treatment in themanagement of post surgical and post traumatic acute pain problems.Contraindications: TENS devices can affect the operation of demand type cardiac pacemakers. Inpatients wi th known myocardial disease or arrhythmias, TENS should be used only with consultationand evaluation by a physician. Do not use TENS on the eyelids. Do not place electrodes directly overthe carotid sinus nerves or arteries, and laryngeal or pharyngeal muscles. Do not apply TENS for un-diagnosed pain syndromes until etiology is established. Any electrode placement that causes current toflow transcerebrally (through the head) is not allowed.Warnings: This device should be used only under the continued supervision of a physician. TENS isineffective for pain of central origin. TENS is of no curative value; it is a symptomatic treatment whichsuppresses pain sensation which would otherwise serve as a protective mechanism on the outcome ofthe clinical process. Safety of TENS devices for use during pregnancy or delivery has not been estab-lished. For external use only. Electronic equipment such as EKG monitors and EKG alarms may notoperate properly when TENS is in use.Precautions: Avoid adjusting controls while operating machinery or vehicles. Turn the s t imulator offbefore applying or removing electrodes. Long term st imulat ion at the same electrode site may causeskin irr i tat ion. If TENS therapy becomes ineffective or unpleasant, stimulation should be discontinueduntil its use is revaluated by the physician or therapist. Use only for the specific pain problem prescr-ibed by physician. Effectiveness is dependent upon patient selection.Turn device to OFF position when changing battery.Adverse Reactions: Possible allergic reaction to tape or gel. Possible skin irritation or electrode burnunder electrode. If skin irritation persists, discontinue use and consult a physician.

CONTENTSPage

Prescr ib ing I n f o r m a t i o n 1Contents 2Introduct ion 3Indicators and Controls 4Prepara t ion for Use 5_6I n s t r u c t i o n s for Use 7_11Concluding Treatment 12Care and Maintenance 13-14Troubleshooting 15Technical Specifications 16

11N1KUUUU11U1N:What is Pain: Pain warns our body of in ju ry . This warning system and is intended to prevent addi-t i o n a l damage. The sensation of pain is impor tant , because wi thout i t , v i t a l parts of our bodies mightbe injured wi thout our knowledge. However, long lasting, persistent pain, often called chronic pain,once diagnosed serves no apparent purpose. TENS is developed to help relieve certain types of chronicand acute pain.How Docs TENS Work? TENS or Transcutaneous Electric Nerve S t imula t ion , refers to the transmis-sion of small electrical pulses through the skin to the underlying peripheral nerves. The theory ofTENS suggests two di f ferent modes or operation.Conventional (high frequency) TENS, is based on the theory that continuous mild electrical activitymay block the pain signal traveling to the brain. If the pain signal does not get through to the bra in ,the pa in is not "felt ." The second way TENS is t hough t to work is by s t imu la t ing the body's ownnatural pa in -con t ro l mechanism. "Low frequency" or short burs ts of electrical ac t iv i ty may causethe body to release its own pain relieving substances, called endorphins. Ask your physician or therapistlor more details. No matter what pain theory is used. TENS has been proven useful in pain manage-ment for many pain patients.

INDICATORS AND CONTROLS

Channel 1Output Indicator Light

Channel IOutput Receptacle

Channel 1 On/Off andAmpl i tude Control

Channel 2 On/Off andAmpli tude Control

Channel 2Output Indicator Light

Channel 2Output Receptacle

- Power indicator Light

iPulse WidthControl

Mode Select -Switch• Burst• Normal• Modulation

Time•30•60• co

I l l l i l l li o m i i i i i i f

Pulse !idth((i!)

180

r Cminminnsta

Tine30

D°n

r (n io) Frequency (Hz)C 60 1Q

N M 2^—^150

9V— 6F22 | Y]

+ P

ontrol

nt

Pulse Frequency -Control

lJKtIJAKATIUN KJK1. Check Battery. I n su re that you are us ing a fresh battery.2. Prepare Skin. Before apply ing electrodes, be sure to conf i rm

correct electrode placement as recommended by your physi-cian or therapist . Each location should be washed, rinsed andthorough ly dried.

3. Prepare Electrodes. Apply gel in a t h i n even layer (about thethickness of a match book cover) to the bottom of the elec-trode. Avoid using too much gel.

Note : If you are using reusable electrode,

please disregard the procedure.

4. Attach Electrodes. The electrode should be attached wi thadhesive tape. Be sure that all sides are wel l taped and thatthe electrode is held f i rmly against the skin.

5. Electrode Lead Wires. Output Plug: (plugs into output recep-tacle). Pin Connectors: (plug into electrodes).

INMKUt HUNS HJK6. Insert Pin into Electrode Socket. Insert pin connector into elec-

trode as shown. (When insert ing or removing pin connector,hold connector-not cord-to protect cord.) For some electrodeloations, it may be preferable to insert the pin connector priorto taping the electrode to the skin.

7. The Tinier Selector Set. 30 Min . 60 Min . and Constant l ime. ©3

E

Timer(min)0 C 60

1

13 N M

8. Adjusting the Controls. Ensure lhal amplitude controls for bothChannels I and 2 are t u rned to the "OFF" position.

9. Connect Leads to TENS unit. Insert receptacle end of leadwire set into the channel output receptacle to be used (1 and/or2), Pushing plug all the way in.

10. High or Low Frequency Tens. Set the mode selector swi tchto the "N" posil ion.

1 1 . Adjust Pulse Frequency. Turn the Pulse Frequency controlto the selling recommended by your medical professional .

©3

E

TimeKmin)0 C 60

1

13 N M

Frequency (Hz)

10

12. Adjust Pulse Width. Turn the Pulse Wid th control to the set-t i ng recommened by your medical professional. ©

13. Adjust Output. Turn Ampl i tude control knob for Channel1 or 2 clockwise. The indicator w i l l l ight up while the un i t isin operat ion. Slowly t u r n the channel control in a clockwisedirection u n t i l you reach the setting recommended by yourmedical professional. Repeat for the other channel, if bothchannels are to be used.

Pulse Width (Ms)

180

14. Using Burst Mode. When operating in Burst mode your TENSproduces a series of seven quick pulses followed by a rest.The cycle repeats itself twice every second. Before switchingto Burs t , turn ampl i tude controls for channels 1 and 2 "0"(off). Choose "B" (burst mode) with the mode selector switch.Slowly adjust the a m p l i t u d e and pulse width controls to these t t ing recommended by your medical professional.Note: In burst mode, the pulse f requency is fixed; adjus t ingthe pulse frequency control has no affect.

15. Using Modulation Mode. When operating in Modula t ionMode, your TENS Neurostimulator automatically varies theampl i tude of the pulse every four seconds. To use Modula-t ion, first adjust the amplitude controls for channels 1 and2 to "0" (off). Set the mode selector switch to "M" (modula-t i o n ) posi t ion. Slowly adjust channe l 1 and/or channel 2ampl i tude , pulse frequency and pulse width controls to thesettings recommended by your medical professional.

CONCLUDING TREATMENT16. Turning Unit Off. Turn both channel controls to Of f . Then

u n p l u g the electrode lead wires, grasping them by the plug,not the cord. If t reatment wil l be resumed shortly the elec-trodes may be left on the skin. When the electrodes are remov-ed, clean the sk in and the electrodes thoroughly with mildsoap and water. I f there is sk in i r r i t a t i on from tape or gel,consult your prescriber.

17. Portability. Your TENS is por table and may be clipped toa belt, shirt pocket, bra or other c lothing.

CARE AND MAINTENANCE18. Front Cover. A removable panel covers the controls for pulse

frequency, pulse w i d t h , mode switch and battery compart-ment . Your medical professional may wish to set these con-trols for you and request that you leave the cover in place.

19. Battery. Dimming of the Indicator lights signifies that the bat-tery should be replaced with a new one as soon as possible.However, the stimulator will continue to operate for severalmore hours. To replace battery, remove front cover (seeabove), and extract battery. Replace with 9 Volt a lka l ine orsimilar rechargable battery, t ak ing care that the battery is in-serted correctly. (See diagram inside battery compartment).This TENS uni t is designed to be used with batteries only,and can not be operated from a line-powered battery charger.

13

20. Care of Electrodes. To avoid sk in i r r i t a t i on and ensure goodcontact with your skin, clean silicone rubber electrodes withsoap and water f r equen t ly . Allow to dry completely before

21. Care of Electrode Cords. Clean the electrode cords by wip-ing with a damp cloth. Coating them l ight ly w i t h talcumpowder will reduce tangling and prolong life.

TROUBLESHOOTINGIf your TENS uni t does not seem to be operating correctly, refer to the chart below to determinewhat may be wrong. Should none of these measures correct the problem, the unit will need servicing.

The power indicator lights upbut unit does not functionproperly.

Please turn both amplitudecontrol switches off , then turnon again.Check all control settings. Arethey set to values prescribed byyour medical professional?Are electrodes in properposition?Check lead wires. Be sure allconnectors are f i rmly sealed.

Be sure you are using theproper amount of gel. Toomuch or too l i t t le can causeproblems.Replace cord set w i t h anotherto check for broken wires.

"On" and "Battery Light" are

dim.

Replace battery with a newone.

None of the indicators light up.

Replace battery with a newone.

To obtain service, contact yoursupplier .

15

TECHNICAL SPECIFICATIONSChannels: Dual, isolated between channelsWave Form: Modified square wave with zero net direct current (DC) componentPulse Amplitude: 0 to 80 mA each channel, adjustable (500 ohm load)Pulse Frequency: 2 to 150 Hz. adjustablePulse Width: 60 to 250 microseconds, adjustableModulation Mode: Pulse width is automatically varied in a cyclic pattern over an interval of nominal-

ly 4.0 seconds.Burst Mode: 7 pulses per burst

2 bursts per second100 Hz internal frequency of burst

Maximum Charge: 20 micro coulombs per pulseTimer: 30 Min, 60 Min or constant timePower Source: 9 volt alkaline battery or similar rechargeable cellBattery Life: 70 hours average usage (alkaline)Size: 24 x 64 x 95mmWeight: 130 grams (including battery)

All values have 10% ± tolerance