KR20170064049A

KR20170064049A - Pain measuring device and method

Info

Publication number: KR20170064049A
Application number: KR1020150168539A
Authority: KR
Inventors: 이효열; 이경실; 김옥균
Original assignee: 주식회사 엠브이알코리아; 김옥균; 이효열; 이경실
Priority date: 2015-11-30
Filing date: 2015-11-30
Publication date: 2017-06-09
Also published as: KR101817202B1

Abstract

The apparatus includes a voltage application unit for applying a voltage through an electrode attached to a body part of a subject, a current measurement unit for measuring a current output from the body part through the electrode corresponding to the voltage, An operation unit for calculating a pain value felt by the examinee based on a first power corresponding to the first current, a second voltage corresponding to the second current, and a second power corresponding to the second current, and a display controller for displaying the pain value on a display screen .

Description

{PAIN MEASURING DEVICE AND METHOD}

The present invention relates to a pain measuring device and a method for measuring pain.

Pain is the most common clinical symptom of the patient, but it is difficult for the patient to accurately describe to the doctor and to express the degree of pain objectively. However, it is important to measure the degree of pain in the patient with objective and quantitative figures in order to evaluate the patient's illnesses and to determine the effectiveness of follow-up care and treatment.

Conventionally, as a pain evaluation method, a stimulus is applied to a patient to stimulate the eyebrow, the movement of the eyebrows, the forehead and the eyelids of the patient are observed to evaluate the degree of pain subjective, or the degree of pain felt by the patient, And the degree of the pain felt by the patient.

However, this method has a problem in that the degree of subjective pain is different depending on the patient, there is a limitation in displaying the degree of feeling of pain as objective data, and the reliability and accuracy are not proved.

The background technology of the present application is disclosed in Korean Patent Registration No. 10-1557786 (Registered on May 20, 2015.30).

It is an object of the present invention to provide a pain measuring device capable of more objectively measuring the pain of a patient and displaying pain information of the patient in objective data.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional art, and it is an object of the present invention to provide a pain measuring device with improved reliability and accuracy.

The purpose of this article is to provide intuitive and easy-to-understand information on patients' pain measurement.

It should be understood, however, that the technical scope of the embodiments of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

As a technical means for accomplishing the above technical object, the pain measuring device according to an embodiment of the present invention includes a voltage applying unit for applying a voltage through an electrode attached to a body part of a subject, Calculating a pain value felt by the examinee on the basis of the first voltage, the first power corresponding to the first current, the second voltage corresponding to the second voltage, and the second current, And a display controller for displaying the pain value on a display screen.

The arithmetic unit may calculate the pain value based on a difference between the first power and the second power.

The pain value may be a ratio between the second power and the first power.

The calculating unit may determine a first energy based on a first measurement time of the first voltage, the first current, and the first current, and the second voltage, the second current, Determining a second energy based on the second measurement time, and determining the pain value based on the first energy and the second energy.

The first power corresponds to a sensory threshold of the subject, and the second power corresponds to a similitude of pain at a lesion site of the subject.

In addition, the voltage applying unit may apply the voltage using a crystal oscillator provided to mitigate the pain felt by the examinee.

In addition, the arithmetic unit can calculate the reliability of the pain value felt by the examinee using a pressure gauge.

According to another aspect of the present invention, there is provided a method for measuring pain comprising the steps of applying a voltage through an electrode attached to a body part of a subject, measuring a current output from the body part through the electrode in response to the voltage, Calculating a pain value felt by the examinee based on the first voltage corresponding to the first voltage and the first current, the second voltage corresponding to the second voltage and the second current, and displaying the pain value on the display screen Step < / RTI >

Further, the calculating step may calculate the pain value based on the difference between the first power and the second power.

The pain value may be a ratio between the second power and the first power.

The calculating further includes determining a first energy based on a first measurement time of the first voltage, the first current, and the first current, and determining the second voltage, the second current, and the second current Determine a second energy based on a second measurement time of the first energy, and determine the pain value based on the first energy and the second energy.

In addition, in the step of applying the voltage, the voltage may be applied using a crystal oscillator provided to mitigate the pain felt by the examinee.

Also, in the calculating step, the reliability of the pain value felt by the examinee can be calculated using a pressure tester.

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments in the drawings and the detailed description of the invention.

According to the above-mentioned task solution of the present application, the present invention provides a method for controlling a first voltage, a first current, and a second voltage, which are determined based on a first measurement time of a first current, There is an effect that the degree of pain of the patient can be more objectively measured and provided by calculating the pain value felt by the examinee using the second energy determined based on the second measurement time and displaying the pain value on the display screen .

In this paper, the use of a crystal oscillator in pain measurement has the effect of enabling the subject to feel a softer stimulus.

In the present invention, by using a pressure tester in the measurement of pain, the reliability of the pain perceived by the examinee can be calculated, and the pain measurement information with improved reliability and accuracy can be provided.

The present invention has the effect of providing the patient's pain measurement information in a more intuitive and easy-to-understand form.

1 is a schematic block diagram of a pain measuring device according to an embodiment of the present invention.
2 is a schematic block diagram of a pain meter according to an embodiment of the present invention;
3 shows an example of the power calculated using the pain measuring device according to an embodiment of the present invention.
4 is a view showing an example of pain measurement measured using a pain measuring device according to an embodiment of the present invention.
FIG. 5 is a graph showing a waveform of a voltage applied to a body of a subject using the pain measuring device according to an embodiment of the present invention. FIG.
6 is a flowchart illustrating an operation of the method for measuring pain according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

It will be appreciated that throughout the specification it will be understood that when a member is located on another member "top", "top", "under", "bottom" But also the case where there is another member between the two members as well as the case where they are in contact with each other.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

The present invention relates to a pain measuring device capable of more objectively measuring a patient's pain and providing the measured patient's pain information in a more intuitive and easy-to-understand form.

1 is a schematic block diagram of a pain measuring device according to an embodiment of the present invention.

Referring to FIG. 1, a pain measuring apparatus 100 according to an embodiment of the present invention includes a display screen 10, a power button 20, an emergency button 30, an adjustment button 40, a hand switch 50, A switch 60, a pressure gauge 70, and an electrode 80.

Briefly, the display screen 10 may display information on a voltage value applied to an electrode 80 attached to a body part of a subject, and a current value output through the electrode 80. The measured current value may be an effective value of the value applied from the pain measuring device 100, which is a value in which the skin resistance value of the subject is considered. In addition, the display screen 10 may display the measured voltage value and the power value corresponding to the measured current value, and the energy value calculated in consideration of the measurement time may also be displayed. In addition, the display screen 10 may be provided with a calculation function that calculates the difference between the first power value calculated corresponding to the threshold value of the sensation felt by the examinee and the second power value calculated corresponding to the pain similar to the pain of the subject's lesion, Pain values may be displayed.

The display screen 10 may also be provided with a menu for setting the value of a signal applied to the electrode 80 (for example, a voltage limit value, a current limit value, a voltage input range, a voltage application time, , So that the signal value applied to the electrode 80 can be set by the user input. The display screen 10 may be a screen (for example, a touch screen) capable of user input.

The power button 20 is a button for turning on / off the power meter 100. The power button 20 is a button for turning on / off the modules of the pain meter 100 (for example, the hand switch 50, The emergency switch 60, the pedometer 70, the electrode 80, etc.) can be controlled.

The urgent button 30 is used when an abnormality occurs in the pain measuring device 100. When the problem of malfunction or the like occurs in the pain measuring device 100, the urgent button 30 may stop the operation.

The adjustment button 40 can finely adjust the value (e.g., voltage value, etc.) applied to the electrode 80. [

The hand switch 50 may be a switch that is pressed in response to the pain sensed by the subject while a voltage is applied to the body part of the subject through the electrode 80. For example, a voltage may be applied stepwise to the electrode 80 attached to the body of the subject, wherein the subject is exposed to an electrical stimulus that meets a threshold value, or if the subject senses an actual lesion site When an electrical stimulation is felt that is similar to pain, the hand switch 50 can be depressed. At this time, the measured value (for example, voltage value, current value, power value, energy value, etc.) at the time when the hand switch 50 is pressed can be displayed on the display screen 10.

The emergency switch 60 is a switch used when an abnormality occurs in the pain measuring device 100, and may be a foot switch operated by stepping on the foot.

The tenderness meter 70 may be a means for measuring the pressure applied to the subject using a pressure sensor. The pain measuring device 100 according to an embodiment of the present invention calculates the reliability of the pain value felt by the examinee by taking the pressure value measured by the pressure measuring device 70 into the pain value of the subject measured through the electric stimulation, can do. Accordingly, the pain measuring device 100 can increase the discriminating power against the pain value measured by the subject by considering the pressure value measured by the pressure measuring device 70 on the pain value of the subject measured through the electric stimulation.

The electrode 80 may be attached to a body part of the subject and may be attached to a body part of the subject by using a signal corresponding to a value set by a user input (e.g., an input voltage value, a voltage input range, a voltage limit value, a current limit value, Can be applied to the body of the examinee through the electrode (80).

The configuration of the pain measuring device 100 according to one embodiment of the present invention described above is merely illustrative of the technical idea of the present embodiment, and any person skilled in the art to which this embodiment belongs, Various modifications and variations may be applied to the components included in the pain measuring device 100 within a range not deviating from essential characteristics.

2 is a schematic block diagram of a pain meter according to an embodiment of the present invention;

Referring to FIG. 2, the pain measuring apparatus 100 according to an embodiment of the present invention may include a voltage applying unit 110, a current measuring unit 120, a calculating unit 130, and a display controlling unit 140.

The voltage applying unit 110 may apply a voltage through the electrode 80 attached to the body part of the subject.

At this time, the voltage application unit 110 may apply a voltage based on a value set by a user input (for example, an input voltage value, a voltage input range, a voltage limit value, a voltage input time, and the like).

The current measuring unit 120 may measure a current output from the body part of the subject through the electrode 80 corresponding to the voltage applied from the voltage applying unit 110. [

At this time, the current value measured through the current measuring unit 120 may be an effective value of the current corresponding to the voltage value applied by the voltage applying unit 110, which is a value in which the skin resistance value of the subject is considered. That is, the current measuring unit 120 can measure the output current value output through the electrode 80 as an effective value for the current applied to the electrode 80 attached to the body part of the subject.

The calculation unit 130 can calculate the pain value felt by the examinee based on the voltage value applied through the voltage application unit 110 and the power value calculated using the current value measured through the current measurement unit 120 have.

The calculating unit 130 can calculate the pain value felt by the examinee based on the first power corresponding to the first voltage and the first current, the second voltage, and the second power corresponding to the second current.

The calculating unit 130 may calculate the pain value based on the difference between the first power and the second power. In addition, the operation unit 130 may calculate the pain value using the ratio between the second power and the first power.

At this time, the first power may correspond to a threshold value of the sensation of the subject, and the second power may be a value corresponding to the similar pain of the lesion of the subject. This can be more easily understood with reference to FIG.

3 shows an example of the power calculated using the pain measuring device according to an embodiment of the present invention.

Referring to FIG. 3, a voltage may be applied stepwise to the electrode 80 attached to a body part of the subject. When the voltage is applied step by step, the examinee can recognize that the first point of time (i.e., the point at which the intensity of the minimum stimulus is felt) at which the electric stimulus that meets the threshold value is applied The hand switch 50 can be pressed at each of the second points of time at which the stimulation is applied (i.e., when the similar pain is felt).

The calculation unit 130 calculates the first power value W1 using the first voltage value V1 and the first current value I1 measured at the first time point, The second power value W2 can be calculated using the voltage value V2 and the second current value I2. Thereafter, the operation unit 130 may calculate the pain value felt by the examinee using the difference or ratio between the first power value W1 and the second power value W2.

The calculation unit 130 calculates the degree of pain felt by the examinee based on the difference between the first power value and the second power value or the pain value measured by the examinee based on the ratio, Pain).

For example, when the difference between the first power value and the second power value is between 1 and 10, the operation unit 130 determines that the difference between the first power value and the second power value is in a range of 11 to 20 It can be determined in step 2, and if the difference between the first power value and the second power value is between 91 and 100, the determination can be made in step 10. According to another embodiment of the present invention, the ratio between the first power value and the second power value is 0% to 10%. However, And the degree of pain can be judged using the ratio between the two values.

Thereafter, the pain value determined in steps 1 to 10 based on the power value may be displayed on the display screen 10 in a visual analogue scale (VAS). VAS means to record no pain at one end and to record the most severe pain imaginable at the end of the other.

In addition, the operation unit 130 can calculate the pain value using the difference or the ratio of the power value, as well as the pain value using the energy value.

The calculation unit 130 determines the first energy based on the first measurement time of the first voltage, the first current, and the first current, and determines the second energy, the second current, and the second current at the second measurement time Based on the first energy and the second energy, and calculate the pain value based on the first energy and the second energy. This can be more easily understood with reference to FIG.

4 is a view showing an example of pain measurement measured using a pain measuring device according to an embodiment of the present invention.

For example, when the voltage applied to the electrode 80 attached to the body part of the subject is incrementally increased by 1 second, the first time point at which the subject feels minimal stimulation (that is, the time point corresponding to the threshold value of the subject's sensation) Let the voltage at 15.5 V be. It is also assumed that the voltage measured at the first time point is 15.5 V and the current value is 39 μA.

At this time, when a voltage of 15.5 V is applied to the electrode 80 for 1 second, for example, 50 electric stimulations can be performed in 1 second for the body part of the subject.

More specifically, as shown in FIG. 4, when 50 stimulations are performed for 1 second, a stimulus (a) of 15.5 V can be generated for 300 μs during one cycle having a period of 20000 μs.

In this case, the stimulus (a) in one cycle has a voltage of 15.5 V for 300 μs, and since the current value is 39 μA, the stimulus (a) in one cycle is 604 μW (ie, 15.5 V × 39 μA = 604 μW) was stimulated for 300 μs. Since the stimulus (a) is repeated 50 times per second, it can be seen that the energy applied to the body part of the subject for 1 second at the first time point is 9.06 μJ (ie, 604 μW × 300 μs × 50 cycles = 9.06 μJ) have.

On the other hand, with the same logic as above, when the voltage is applied to the electrode 80 attached to the body part of the examinee while the voltage is gradually increased by 1 second, an electric stimulus is applied to the subject in which pain similar to the pain felt in the actual lesion area is felt Assume that the voltage at the second time point (i.e., when the similar pain is felt) is 30.5 V. It is also assumed that the voltage measured at the second time point is 30.5 V and the current value is 84 μA.

At this time, when a voltage of 30.5 V is applied to the electrode 80 for 1 second, for example, 50 electric stimulations can be performed in 1 second for the body part of the subject.

Accordingly, at the second time point, the stimulus in one cycle is 30.5 V for 300 μs, and since the current value at this time is 84 μA, the stimulus (a) in one cycle is 2562 μW 84 μA = 2562 μW) for a period of 300 μs. This stimulus is repeated 50 times per second, so that the energy applied to the body part of the subject for 1 second at the second time point is 38.43 μJ (ie, 2562 μW × 300 μs × 50 cycles = 38.43 μJ).

Therefore, the operation unit 130 can calculate the pain value using the difference or the ratio of the energy value as well as the difference or the ratio of the power value, and the degree of the pain felt by the examinee based on the calculated pain value Weak pain) to 10 levels (severe pain).

For example, when the difference between the first energy value and the second energy value is between 1 and 10, the operation unit 130 determines that the difference between the first energy value and the second energy value is in a range of 11 to 20 And if the difference between the first energy value and the second energy value is between 21 and 30, it can be determined as the third step. If the difference between the first energy value and the second energy value is between 91 and 100, it can be determined to be 10 levels.

In the case of the above embodiment, the operation unit 130 calculates the pain value based on the difference or the ratio between the first energy value at the first time point and the second energy value at the second time point, Since the difference between the second energy value (i.e., 9.06 μJ) and the second energy value (38.43 μJ) is 29.37 μJ (ie, 38.43 μJ-9.06 μJ = 29.37 μJ), the calculation unit 130 can determine the pain value have.

If the ratio between the first energy value and the second energy value is between 0% and 10%, the calculating unit 130 may determine the degree of pain using a ratio between the two values, for example, have.

Thereafter, the pain value determined in steps 1 to 10 based on the energy value may be displayed on the display screen 10 in a visual analogue scale (VAS).

In addition, the arithmetic unit 130 can calculate the reliability with respect to the pain value felt by the examinee using the pressure measuring device 70. That is, the calculating unit 130 can calculate the reliability of the pain value felt by the examinee by taking the pressure value measured by the pressure measuring device 70 into the pain value of the subject calculated based on the electric stimulus.

The display controller 140 may display the pain value calculated by the calculator 130 on the display screen 10.

At this time, the display control unit 140 controls the degree of the pain felt by the subject calculated based on the pain value calculated by the operation unit 130 (for example, pain classified into 10 levels indicating weak pain, ) Can be expressed by VAS.

Also, the display control unit 140 may display the result of the pain measurement of the subject by a power value, an energy value, or the like.

FIG. 5 is a graph showing a waveform of a voltage applied to a body of a subject using the pain measuring device according to an embodiment of the present invention. FIG.

5 (a) shows a waveform of a voltage applied to a body based on a conventional pain measuring method, and FIG. 5 (b) shows a waveform of a voltage applied to the body based on the pain measuring method of the present invention Wave form.

Referring to FIG. 5 (a), in the conventional pain measuring method, when a voltage is applied at a constant cycle, a gate is opened and a voltage is instantaneously applied at a high speed to cause a subject to feel a sudden sharp- There was a drawback that it caused bad pain.

5 (a), the pain measuring device 100 according to an embodiment of the present invention uses a crystal oscillator when a voltage is applied by the voltage applying unit 110, thereby allowing the examinee to feel soft type stimulation This makes it possible to concentrate only on the intensity of the pain when measuring the pain and to relieve the pain caused by the instantaneous voltage.

On the other hand, in the case of the method of measuring the pain using the current difference among the methods of measuring the pain, there is a disadvantage in that it is not practical to objectively evaluate the degree of the pain felt by the examinee because the difference of the current is not large. In addition, when a method of indexing the current value according to the passage of time is used, there is a disadvantage that it does not reflect the degree of actual pain felt by the subject.

On the other hand, the pain measuring method according to one embodiment of the present invention is a method of measuring the pain measured in correspondence with the measured value corresponding to the threshold value of the subject's senses and the similar pain of the subject (i.e., the pain similar to the pain felt by the subject in the actual lesion area) The measured value is the voltage value measured at the point in time, the current value measured at the point in time (the current value is the value at which the skin resistance value of the subject is considered, The power value, and the energy value, etc., are used. Thus, the present invention has the effect of more objectively measuring and diagnosing the degree of pain felt by the subject.

Hereinafter, the operation flow of the present invention will be briefly described based on the details described above.

6 is a flowchart illustrating an operation of the method for measuring pain according to an embodiment of the present invention.

Referring to FIG. 6, in the method for measuring pain according to an embodiment of the present invention, a voltage is applied through an electrode attached to a body part of a subject by a voltage applying unit 110 (S610).

In step S610, the voltage applying unit 110 may apply a voltage based on a value set by a user input (for example, an input voltage value, a voltage input range, a voltage limit value, a voltage input time, etc.).

In step S610, the voltage applying unit 110 may apply a voltage using a crystal oscillator to alleviate the pain felt by the examinee.

Next, the current measuring unit 120 may measure the current output through the electrode 80 from the body part of the subject in response to the voltage applied in step S610 (S620).

The current value measured through the current measuring unit 120 in step S620 may be a value that considers the skin resistance of the subject and is an effective value of the current corresponding to the voltage value applied by the voltage applying unit 110. [ That is, the current measuring unit 120 can measure the output current value output through the electrode 80 as an effective value for the current applied to the electrode 80 attached to the body part of the subject.

Next, the calculation unit 130 calculates the pain value of the examinee based on the voltage value applied through the voltage application unit 110 and the power value calculated using the current value measured through the current measurement unit 120 .

That is, the operation unit 130 may calculate the pain value felt by the examinee based on the first power corresponding to the first voltage and the first current, the second voltage corresponding to the second voltage, and the second current (S630) .

In step S630, the arithmetic unit 130 may calculate the pain value based on the difference between the first power and the second power. Also, the calculation unit 130 may calculate the pain value using the ratio between the second power and the first power.

At this time, the first power may correspond to a threshold value of the sensation of the subject, and the second power may be a value corresponding to the similar pain of the lesion of the subject. A more detailed description will be made with reference to the description of FIG.

In step S630, the arithmetic unit 130 determines the degree of pain felt by the examinee based on the difference or the ratio between the first power value and the second power value, ~ 10 steps (severe pain) can be judged.

In addition, in step S630, the operation unit 130 may calculate the pain value using the energy value, as well as calculate the pain value using the difference or the ratio of the power value.

That is, in step S630D, the calculating unit 130 determines the first energy based on the first measurement time of the first voltage, the first current, and the first current, and determines the second voltage, the second current, Determine a second energy based on a second measurement time, and calculate a pain value based on the first energy and the second energy. Thereafter, the operation unit 130 may determine the degree of the pain felt by the subject based on the pain value calculated using the energy value, as one level (weak pain) to ten levels (severe pain). A more detailed description will be made with reference to the description of FIG.

In addition, in step S630, the arithmetic unit 130 may calculate the reliability of the pain value felt by the examinee using the pressure measuring device 70. [ That is, the calculating unit 130 can calculate the reliability of the pain value felt by the examinee by taking the pressure value measured by the pressure measuring device 70 into the pain value of the subject calculated based on the electric stimulus.

Next, the display control unit 140 may display the pain value calculated in step S630 on the display screen 10 (S640).

At this time, in step S640, the display control unit 140 displays the degree of pain felt by the subject calculated based on the pain value calculated in step S630 (for example, 10 levels indicating weak pain, Degree of pain) can be indicated by VAS.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: Pain Meter
110: voltage applying unit 120: current measuring unit
130: Operation unit 140:

Claims

A voltage applying unit for applying a voltage through an electrode attached to a body part of a subject;
A current measuring unit measuring a current output from the body part through the electrode corresponding to the voltage;
An arithmetic unit for calculating a pain value felt by the examinee based on a first power corresponding to a first voltage and a first current, a second voltage corresponding to a second voltage and a second current, And
A display control unit for displaying the pain value on a display screen,
Wherein the pain measuring device comprises:

The method according to claim 1,
The operation unit
And calculates the pain value based on a difference between the first power and the second power.

The method according to claim 1,
Wherein the pain value is a ratio between the second power and the first power.

The method according to claim 1,
The operation unit
Determining a first energy based on a first measurement time of the first voltage, the first current, and the first current, and determining a second energy based on a second measurement time of the second voltage, the second current, To determine a second energy, and to determine the pain value based on the first energy and the second energy.

The method according to claim 1,
Wherein the first power corresponds to a sensory threshold of the subject, and the second power corresponds to similitude of pain at a lesion site of the subject.

The method according to claim 1,
The voltage application unit
Wherein the voltage is applied using a crystal oscillator provided to alleviate pain felt by the examinee.

The method according to claim 1,
The operation unit
Wherein the reliability of the pain value felt by the examinee is calculated using a pressure tester.

Applying a voltage through an electrode attached to a body part of the subject;
Measuring a current output from the body part through the electrode corresponding to the voltage;
Calculating a pain value felt by the examinee based on the first voltage corresponding to the first voltage and the first current, the second voltage corresponding to the second voltage, and the second current; And
Displaying the pain value on a display screen
/ RTI >

9. The method of claim 8,
The calculating step
And calculating the pain value based on a difference between the first power and the second power.

9. The method of claim 8,
Wherein the pain value is a ratio between the second power and the first power.

9. The method of claim 8,
The calculating step
Determining a first energy based on a first measurement time of the first voltage, the first current, and the first current, and determining a second energy based on a second measurement time of the second voltage, the second current, Determining a second energy to determine the pain value based on the first energy and the second energy.

9. The method of claim 8,
Wherein the first power corresponds to a sensory threshold of the subject and the second power corresponds to similitude of pain at a lesion site of the subject.

9. The method of claim 8,
The step of applying the voltage
Wherein the voltage is applied using a crystal oscillator provided to alleviate pain felt by the subject.

9. The method of claim 8,
The calculating step
Wherein the reliability of the pain value felt by the examinee is calculated using a pressure tester.