How to use the pain threshold tester
1. In order to ensure the safety of the experiment, it is recommended that when the instrument uses 220 VAC, lay an insulating rubber pad on the bottom of the tested foot.
2. In order to ensure the reliability of the experiment, before the experiment, apply conductive paste (available for purchase or prepared according to the appendix of this manual) around the pain measurement site of the human body, and rub it to reduce the skin resistance and increase the current on the skin. Permeability.
3. Take the black irrelevant electrode (negative electrode) and insert its plug into the black jack at the output end of the instrument. Cut a piece of gauze with a thickness of 3 to 4 layers according to the size of the electrode, and soak the gauze in a saturated potassium chloride solution, bind the gauze to the upper part of the calf of the subject, and then wrap the extraneous electrode around the calf through the gauze Note that the metal sheet on the unrelated electrode must coincide with the gauze.
4. Take the red effective electrode (positive electrode), take a small amount of medical cotton and fill the hole with a diameter of 3 mm on the electrode, inject a saturated solution of potassium chloride into the hole, soak the cotton, and then insert its plug into the red end of the instrument Jack.
5. Turn the ascent rate adjustment knob on the instrument to the middle position (or select the position according to the previous experience of using the instrument), and turn the work control to the closed position
6. Turn on the power switch, the indicator light on the upper right corner of the instrument panel lights up and the ammeter has no indication.
7. The main test put the end of the effective electrode plugged with cotton on the pain-testing part of the test (point P in the figure, that is, Sanyinjiao acupoint).
8. Move the working control knob to the stop position, the red light on the output of the instrument lights up, and then pull the working control knob to the up position, then the instrument output will have a DC current output, and the current intensity will change from weak to strong , Gradually increased, the ammeter indication also changed from small to large.
9. When the subject feels slight pain, immediately report, the main test records the current milliampere at that time, as the pain threshold.
10. When the subject reports "Can't take it", the main tester moves the work control knob to the stop position, and records the milliampere number at that time as the pain threshold.
11. The main test will pull the work control to the closed position, the output current intensity of the instrument will decrease rapidly. The red light at the output of the instrument goes out, and one experiment ends. Enter the next experiment.
After performing several pain-testing exercises, the subjects experienced the stimulation of direct current potassium ions. After mastering the standards of pain and pain tolerance, they first performed the exercise experiment three times. After a short rest, they began to conduct a formal experiment. , With a one-minute pause each time, take the average.
Precautions
1. When the instrument uses 220V AC power supply, please make sure that the grounding wire on the socket is well grounded.
2. When using this instrument to perform a pain threshold test on the human body, when the subject reports "can't take it", you can't cut off the instrument's output current by turning off the instrument's power, because the sudden cut off of the power will cause the electrolytic capacitor inside the instrument to discharge and occur. The larger current caused the subject to have a sudden pain. The current output should be cut off by turning the work control to the closed position.
3. When the work control button is in a stopped state, the indicated value of the ammeter is in a relatively stable state. When it is in this state for a long time, the indicated value of the ammeter will have a slight deviation. This is a normal phenomenon. The main test passes this relatively stable state. Record the current value of the test.
4. The output terminal of the instrument is strictly forbidden to be short-circuited, and strictly prohibited to be used for other purposes.
5. The instrument should be stored in a dry place to prevent the instrument from getting wet and reduce the safety performance of the instrument.
6. If there is any abnormality in the instrument, please stop using it immediately and contact our factory.
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