TENS EV-803P Dual Channel Digital TENS Unit w/ 9 Programs

The EV-803P DIGITAL TENS Unit- is a battery operated pulse generator that sends electrical impulses electrodes to the body and reach the nerves causing pain. The device is provided with two controllable output channels, each independent of each other. An electrode pair can be connected to each output channel.

The electronics of the EV-803P DIGITAL TENS Unit create electrical impulses whose intensity, duration, number per second, timer and modulation may be altered with the controls/buttons. Nine preset programs are available for option as well. Press buttons are very easy to use and the large liquid crystal display showing the exact mode and values of parameters are very convenient for patients.

Each set EV-803P DIGITAL TENS Unit are completed with standard accessories and standard label as given below:

1. KS4040 40 X 40 MM Adhesive Electrodes (4 pieces)
2. KE-26 Electrodes Leads (2 pieces)
3. GC-01 9 V Battery, type 6F22 (1 piece)
4. Instruction Manual (1 piece)
5. Carrying Case for the EV-803Digital TENS unit (1 piece)


TECHNICAL SPECIFICATION details of EV-803P DIGITAL TENS Unit are as follows:

Channel: Dual, isolated between channels

Pulse Amplitude: Adjustable 0-80mA, Max output 80mA peak to peak (15.8mA rms) into 500ohm load each channel, 1mA each step.

Output Voltage: Adjustable 0-40V, Max output 40V peak to peak (8.5V rms) into 500ohm load each channel.

Wave Form: Asymmetrical rectangular biphasic pulse.

Power Supply: One 9 Volt Battery, type 6F22

Size: 10.1cm(L) x 6.8cm(W) x 2.15cm(H)

Weight: 155 grams (battery included)

Pulse Rate: Adjustable, 1~150Hz , 1Hz / step

Pulse Width: Adjustable, 50~300 Microseconds , 10 Microseconds / step

Mode: Four modes available, B(Burst), N(Normal) , M(Pulse Rate Modulation) and P(Program). Parameters are adjustable at B, N or M mode. Nine pre-set programs (fixed) are available of options at P mode. (Pulse Width Modulation and Mixed Frequency are included.)

Burst: Burst rate adjustable, 0.5~5 Hz Pulse width adjustable, 50~300 Microseconds Frequency fixed = 100Hz

Normal: Constant output based on the setting value.

P.R. Modulation(-40%): Pulse rate is automatically varied in acyclic pattern over an interval of nominally 10 seconds. (in max 150Hz) Pulse rate decreases linearly over aperiod of 5 seconds from the control setting value to a value which is 40% less. Then increase linearly over a 5 seconds period to its original value. The cycle is then repeated.

Timer: Selectable, 30 Minutes, 60 Minutes or Continue.

Program: 9 pre-set programs

Program Lock: The intensity and the value of all parameters will be locked when the "Lock" button is pressed.

Operating Condition: Temperature: 0~40 degree Celcius, Relative Humidty: 30%~75%, Atmosphere Pressure : 700Hpa~1060Hpa.

Remark: There may be up to a +/-5% tolerance of all parameters and +/-20% tolerance of amplitude & voltage.

EXPLANATION OF PAIN

Pain is a warning system and the body's method of telling us that something is wrong. Pain is important; without it abnormal conditions may go undetected, causing damage or injury to vital parts of our bodies. Even though pain is a necessary warning signal of trauma or malfunction in the body, nature may have gone too far in its design. Aside from its value in diagnosis, long-lasting persistent pain serves no useful purpose. Pain does not begin until a coded message travels to the brain where it is decoded, analyzed, and then reacted to. The pain message travels from the injured area along the small nerves leading to the spinal cord. Here the message is switched to different nerves that travel up the spinal cord to the brain. The pain message is then interpreted, referred back and the pain is felt.

EXPLANATION OF TENS

Transcutaneous Electrical Nerve Stimulation is a non-invasive, drug free method of controlling pain. TENS uses tiny electrical impulses sent through the skin to nerves to modify your pain perception. TENS does not cure any physiological problem; it only helps control the pain. TENS does not work for everyone; however, in most patients it is effective in reducing or eliminating the pain, allowing for a return to normal activity.

HOW TENS WORK

There is nothing magic about Transcutaneous Electrical Nerve Stimulation (TENS). TENS is intended to be used to relieve pain. The TENS unit sends comfortable 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 the 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 three to four times longer). In others, pain is only modified while stimulation actually occurs. You may discuss this with your physician or therapist.