JPWO2019078327A1 - Inflammation evaluation system, evaluation method, program, and non-temporary recording medium - Google Patents

Abstract

An object of the present disclosure is to suppress a decrease in evaluation accuracy. The evaluation system (6) acquires a measurement value including an erythema value and an intensity value (melanin value) of a color different from the erythema color at the skin measurement point (51) measured by the measuring instrument (7). 60) is provided. The evaluation system (6) according to the first aspect includes an evaluation unit (61) that evaluates inflammation based on the erythema value included in a plurality of measured values acquired by the acquisition unit (60). The evaluation unit (61) selects a measured value in which the intensity value (melanin value) of each of the plurality of measured values is within a predetermined range as the measured value of the evaluation candidate. The evaluation unit (61) evaluates inflammation based on the erythema value included in the measured values of the evaluation candidates.

Description

The present disclosure relates to an inflammation evaluation system, evaluation method, program, and non-temporary recording medium, and more specifically, an evaluation system, evaluation method, program, and non-temporary evaluation system for evaluating the degree of inflammation occurring on human skin. Regarding recording media.

Erythema is one of the inflammations that occur on human skin. Erythema is the name of a rash that refers to the redness (redness) of the epidermis caused by telangiectasia or hyperemia of the dermis. Patent Document 1 describes an example of an evaluation method for evaluating the degree of such inflammation (erythema).

In the evaluation method described in Patent Document 1, the light reflectance of the skin region or mucous membrane region where erythema is generated is measured, and the L * value and a * value of the measurement result are obtained according to the L * a * b * color space. , The acquired value is substituted into the formula (L * max−L *) × a * to calculate the erythema value. Further, in the evaluation method described in Patent Document 1, the presence or absence of inflammation and the degree of inflammation are evaluated based on the calculated erythema value.

By the way, when measuring the erythema value, it is necessary to bring the measuring device into contact with the skin, but the body hair existing in the epidermis intervenes between the measuring device and the epidermis, and the erythema value is measured by the influence of the body hair. The error may increase. As the measurement error of the erythema value increases, the accuracy of inflammation evaluation also decreases.

Special Table 2016-51885

An object of the present disclosure is to provide an inflammation evaluation system, an evaluation method, a program, and a non-temporary recording medium capable of suppressing a decrease in evaluation accuracy.

The inflammation evaluation system according to one aspect of the present disclosure is an evaluation system for evaluating inflammation occurring in the skin. The evaluation system includes an acquisition unit that acquires a measured value including an erythema value and an intensity value of a color different from the color of the erythema at the measurement point of the skin measured by the measuring device, and a plurality of the measurements acquired by the acquisition unit. It is provided with an evaluation unit for evaluating inflammation based on the erythema value included in the value. The evaluation unit compares the erythema value and the intensity value in each of the plurality of measured values, and evaluates the measured value in which the ratio of the compared erythema value and the intensity value is within a predetermined range. Select as a measured value. The evaluation unit evaluates inflammation based on the erythema value included in the measured values of the evaluation candidates.

The evaluation method according to one aspect of the present disclosure is an evaluation method for evaluating inflammation occurring in the skin. In the evaluation method, a measured value including an erythema value at a measurement point of the skin measured by a measuring device and an intensity value of a color different from the color of the erythema is acquired, and the erythema value and the erythema value in each of the plurality of measured values are obtained. Compare strength values. In the evaluation method, a measured value in which the ratio of the compared erythema value and the intensity value is within a predetermined range is selected as the measurement value of the evaluation candidate, and the erythema value included in the measurement value of the evaluation candidate is used. Evaluate inflammation based on.

The program according to one aspect of the present disclosure causes a computer system to execute the evaluation method.

The non-temporary recording medium according to one aspect of the present disclosure is a non-temporary recording medium readable by a computer system in which a program for causing a computer system to execute an evaluation method of a brain activity measuring device is recorded.

FIG. 1 shows the usage state of an electroencephalogram measurement system including a headset worn on the head of a subject to be evaluated by the inflammation evaluation system according to the embodiment of the present disclosure, and a rehabilitation support system provided with the headset. It is a schematic diagram which shows. FIG. 2 is a block diagram showing the configurations of the above-mentioned electroencephalogram measurement system and rehabilitation support system. FIG. 3A is a schematic top view showing a usage state of the headset as described above. FIG. 3B is a schematic front view showing a usage state of the headset as described above. FIG. 4 is a system configuration diagram of the same evaluation system. FIG. 5 is a flowchart for explaining the operation of the evaluation system of the same. FIG. 6 is a flowchart for explaining the operation of the evaluation system of the above. FIG. 7 is an explanatory diagram for explaining the measured values in the same evaluation system. FIG. 8 is a diagram showing a line graph for explaining the operation of the evaluation system of the same.

Each of the figures described in the following embodiments is a schematic diagram, and the size, thickness, and ratio of each component do not necessarily reflect the actual dimensional ratio. The configuration described in the following embodiments is only an example of the present disclosure. The present disclosure is not limited to the following embodiments, and various changes can be made depending on the design and the like as long as the effects of the present disclosure can be achieved.

In explaining the evaluation system according to the present embodiment, the inflammation to be evaluated by the evaluation system will be described. The inflammation to be evaluated is, for example, inflammation caused by wearing a brain activity measuring device (hereinafter, referred to as headset 1) on the head. As shown in FIG. 1, the headset 1 constitutes an electroencephalogram measurement system 10 together with an information processing device 2.

The electroencephalogram measurement system 10 is a system for measuring the electroencephalogram of the subject 5, and is an electroencephalogram from an electrode portion 11 arranged at a position corresponding to a measurement point 51 which is a part of the head 52 of the subject 5. Get information. The "electroencephalogram" (EEG) referred to in the present disclosure means a waveform obtained by deriving an electrical signal (action potential) emitted by a nerve cell (group) of the cerebrum to the outside of the body and recording it. In the present disclosure, unless otherwise specified, scalp electroencephalograms are recorded by using an electrode portion 11 attached to the scalp, targeting the overall action potentials of a large number of neurons (nerve network) in the cerebral cortex. It is called "brain wave".

The electroencephalogram measurement system 10 includes a headset 1 (see FIG. 3B) having an electrode portion 11 and an information processing device 2. The headset 1 is attached to the head 52 of the subject 5 in a state where the electrode portion 11 is in contact with the surface (scalp) of the head 52 of the subject 5. In the present disclosure, the electrode portion 11 comes into contact with the surface of the head 52 by being placed on a paste (electrode glue) applied to the surface of the head 52. At this time, the electrode portion 11 comes into contact with the surface of the head 52 without passing through the hair by scraping the hair. Of course, the electrode portion 11 may come into direct contact with the surface of the head portion 52 without applying the paste. That is, in the present disclosure, "contacting the electrode portion 11 with the surface of the head 52" means that the electrode portion 11 is in direct contact with the surface of the head 52 (including the scalp), and also via an intermediate. It also includes indirectly contacting the electrode portion 11 with the surface of the head 52. The intermediate is not limited to the paste, and may be, for example, a conductive gel.

The headset 1 measures the electroencephalogram of the subject 5 by measuring the action potential of the brain of the subject 5 at the electrode unit 11, and generates electroencephalogram information representing the electroencephalogram. The headset 1 transmits brain wave information to the information processing device 2 by, for example, wireless communication.

The information processing device 2 mainly includes a computer system such as a personal computer. The information processing device 2 receives the electroencephalogram information from the headset 1 by, for example, wireless communication, performs various processes on the electroencephalogram information acquired from the headset 1, and displays the electroencephalogram information. In the present embodiment, detection of brain waves including characteristic changes that occur when the subject 5 performs a voluntary movement (that is, that may occur when the subject 5 intends to perform a voluntary movement), and The calibration process and the like are performed by the information processing apparatus 2. The "calibration process" referred to in the present disclosure is a process for analyzing brain wave information, that is, for determining various parameters used for detecting a brain wave to be detected.

Next, the headset 1 will be described with reference to FIGS. 1, 3A and 3B. It should be noted that the arrows "D1" and "D2" shown in the drawings are shown only for the sake of explanation and are not accompanied by an entity.

The headset 1 includes a frame 17, a mounting portion 19, and a pair of holding portions 18. The frame 17 can be attached to the head 52 of the subject 5, and is attached to the head 52 in a first direction from the median center (vertex) of the subject 5 toward the left tragus and the right tragus. It has a shape extending to D1. The "center of the midline" referred to in the present disclosure is the position represented by the electrode symbol "Cz" in the International 10-20 Law, and in the head 52 of the subject 5, the nose root and the occipital nodule of the subject 5 This is the intersection of the line connecting the two and the line connecting the front point of the tragus of the left ear 521 and the front point of the tragus of the right ear 522. Further, in the "first direction" referred to in the present disclosure, in a state where the frame 17 is attached to the head 52, the midline center, the left tragus, and the right tragus of the subject 5 are connected along the head 52. The direction is parallel to the curve.

The mounting portion 19 is provided on the frame 17 and can accommodate the electrode portion 11 used for collecting the brain waves of the subject 5. The electrode portion 11 comes into contact with the position corresponding to the measurement point 51 on the surface of the head 52 with the frame 17 attached to the head 52. The frame 17 is provided with a pair of mounting portions 19.

The pair of holding portions 18 are connected to both ends of the first direction D1 of the frame 17, and come into contact with the head 52 with the frame 17 attached to the head 52. In other words, holding portions 18 are provided at both ends of the first direction D1 of the frame 17. Then, these holding portions 18 hold the frame 17 with respect to the head 52 by contacting the head 52 with the frame 17 attached to the head 52.

The above-mentioned electroencephalogram measurement system 10 is used, for example, in the rehabilitation support system 100 shown in FIG.

The rehabilitation support system 100 is a system for supporting the rehabilitation of the subject 5 by using the electroencephalogram measurement system 10 including the headset 1. The rehabilitation support system 100 supports rehabilitation by exercise therapy, for example, for a person who has motor paralysis or a decrease in motor function in a part of the body due to a brain disease such as a stroke or an accident. In such a subject 5, the voluntary movement, which is an exercise performed by the subject 5 based on his / her own intention or intention, may not be satisfactory due to inability or deterioration of its function. The "exercise therapy" referred to in the present disclosure refers to a disorder caused by exercising a part of the body of the subject 5 in which such voluntary movement is impossible or a function is deteriorated (hereinafter referred to as "disordered part"). It means a method of recovering the function of voluntary movement for a part.

As shown in FIGS. 1 and 2, the rehabilitation support system 100 includes an electroencephalogram measurement system 10 (including a headset 1), an exercise assist device 3, and a control device 4.

The exercise assist device 3 is a device that assists the exercise of the subject 5 by adding at least one of a mechanical stimulus and an electrical stimulus to the subject 5. Since the rehabilitation support system 100 is used for the rehabilitation of the left finger of the subject 5, the exercise assist device 3 is attached to the left hand of the subject 5 as shown in FIG.

The rehabilitation support system 100 described below is used for rehabilitation of the gripping motion and the extension motion of the subject 5 with the left finger. The "grasping operation" referred to in the present disclosure means an operation of grasping an object. Further, the "extension motion" referred to in the present disclosure is grasped by the motion of opening the hand by extending the four fingers 53 (second to fifth fingers) excluding the first finger (thumb), that is, by the gripping motion. It means the action of releasing the "thing" of the state. That is, in the subject 5, the left finger is the impaired part, and the rehabilitation support system 100 is used for rehabilitation for voluntary movements such as gripping motion and extension motion by the left finger. However, in reality, the rehabilitation support system 100 does not directly assist the gripping motion of the subject 5, but indirectly rehabilitates the gripping motion by assisting the extension motion of the fingers of the subject 5. Do.

Therefore, in the rehabilitation support system 100, when the subject 5 intends to perform an extension movement as a voluntary movement, the exercise assist device 3 attached to the left hand of the subject 5 is mechanically attached to the left finger 53 of the subject 5. Assist voluntary movements by adding at least one of the stimuli and the electrical stimuli. That is, the rehabilitation support system 100 assists the voluntary movement (extension movement) when the subject 5 releases the peg 101 by the extension movement of the fingers 53 from the posture in which the peg 101 (see FIG. 1) is grasped by the left finger. .. However, not limited to this example, the rehabilitation support system 100 may be used for rehabilitation of the right finger of the subject 5, for example.

As shown in FIG. 2, the exercise assisting device 3 includes a finger driving device 31 and an electrical stimulation generator 32.

The finger driving device 31 holds four fingers 53 (second to fifth fingers) excluding the first finger (thumb), and applies mechanical stimulation (external force) to these four fingers 53. It is a device that moves four fingers 53. The finger driving device 31 includes, for example, a power source such as a motor or a solenoid, and moves the four fingers 53 by transmitting the force generated by the power source to the four fingers 53. In the finger driving device 31, the held four fingers 53 are moved in a direction away from the first finger (that is, an extension motion) and a movement (that is, a gripping motion) in a direction approaching the first finger. Two types of operations, "closing operation" and "closing operation", are possible. The opening operation of the finger driving device 31 assists the extension operation of the subject 5, and the closing operation of the finger driving device 31 assists the gripping operation of the subject 5.

The electrical stimulus generator 32 is a device that gives an electrical stimulus to a portion for moving the finger 53 of the subject 5. Here, the part for moving the finger 53 of the subject 5 includes a part corresponding to at least one of the muscle and the nerve of the finger 53 of the subject 5. For example, the part for moving the finger 53 of the subject 5 is a part of the arm of the subject 5. The electrical stimulation generator 32 includes, for example, a pad attached to the body (for example, an arm) of the subject 5. The electrical stimulus generator 32 gives a stimulus to a site for moving the finger 53 by applying an electrical stimulus (electric current) to the body of the subject 5 from the pad.

The control device 4 controls the exercise assist device 3 based on the electroencephalogram information acquired by the electroencephalogram measurement system 10. In other words, the control device 4 controls the exercise assist device 3 according to the brain waves of the subject 5 collected by the electrode portion 11 of the headset 1. The control device 4 is electrically connected to the information processing device 2 and the exercise assist device 3 of the electroencephalogram measurement system 10. A power cable for supplying the operation assisting device 3 and the operating power of the control device 4 is connected to the control device 4. The control device 4 includes a drive circuit for driving the finger drive device 31 of the exercise assist device 3 and an oscillation circuit for driving the electrical stimulation generator 32. The control device 4 receives a control signal from the information processing device 2 by, for example, wired communication.

When the control device 4 receives the first control signal from the information processing device 2, the control device 4 drives the finger drive device 31 of the exercise assist device 3 by the drive circuit, and the finger drive device 31 performs the "open operation". Controls the exercise assist device 3. Further, when the control device 4 receives the second control signal from the information processing device 2, the drive circuit drives the finger drive device 31 of the exercise assist device 3, and the finger drive device 31 performs a "closing operation". The exercise assist device 3 is controlled so as to be processed. Further, when the control device 4 receives the third control signal from the information processing device 2, the control device 4 drives the electrical stimulation generator 32 of the motion assisting device 3 by the oscillation circuit, and the body of the subject 5 is electrically stimulated. The exercise assist device 3 is controlled so as to be given.

In this way, the control device 4 controls the exercise assist device 3 based on the control signal output from the electroencephalogram measurement system 10, and the exercise assist device 4 is based on the electroencephalogram information acquired by the electroencephalogram measurement system 10. It is possible to control 3. Further, the control device 4 controls the exercise assist device 3 so that the finger drive device 31 performs the “open operation” and the “close operation” in response to the operation of the operation switch provided in the control device 4. You can also.

For example, in the same manner as when a medical staff such as a physical therapist or an occupational therapist holds the finger 53 of the subject 5 to assist the voluntary movement of the subject 5, the rehabilitation support system 100 assists the voluntary movement. It will be possible. Therefore, according to the rehabilitation support system 100, it is possible to realize rehabilitation by exercise therapy, which is more effective than the case where the subject 5 performs voluntary exercise alone, as in the case where the medical staff assists.

By the way, in order to support the rehabilitation as described above, the rehabilitation support system 100 may assist the voluntary movement of the subject 5 with the exercise assist device 3 when the subject 5 intends to perform the voluntary movement. desirable. The rehabilitation support system 100 is an exercise assist device 3 that matches the voluntary movement of the subject 5 by interlocking the exercise assist device 3 with the brain waves (electroencephalogram information) of the subject 5 measured by the brain wave measurement system 10. Achieve the assistance of voluntary movements. In other words, the rehabilitation support system 100 uses the brain-machine interface (BMI) technology to operate the machine (exercise assist device 3) using brain activity (brain waves). Achieve therapeutic rehabilitation.

When the subject 5 performs a voluntary movement (that is, in the process of the subject 5 performing a voluntary movement), characteristic changes in brain waves can occur. That is, when the subject 5 intends (remembers) to perform the voluntary movement, activation of the brain region corresponding to the target portion of the voluntary movement may occur. An example of such a brain region is the somatosensory motor cortex. More effective rehabilitation can be expected by assisting the voluntary movement of the subject 5 with the exercise assisting device 3 at the timing when such activation of the brain region occurs. Such activation of brain regions can be detected as characteristic changes in EEG. Therefore, the rehabilitation support system 100 assists the voluntary movement of the subject 5 with the exercise assist device 3 at the timing when this characteristic change occurs. Such a characteristic change can occur when the subject 5 images the voluntary movement (that is, during an exercise attempt) even if the voluntary movement is not actually performed. In other words, such characteristic changes in EEG can be seen if the corresponding brain region is activated by the intention (remembering) of the subject 5 to perform the voluntary movement even if the voluntary movement is not actually performed. Can occur. Therefore, the rehabilitation support system 100 can assist the voluntary movement even for the subject 5 who cannot perform the voluntary movement.

The electroencephalogram measurement system 10 detects an intensity change in a specific frequency band caused by an event-related desynchronization (ERD) as a characteristic change. The "event-related desynchronization" referred to in the present disclosure means a phenomenon in which the power of a specific frequency band decreases in an electroencephalogram measured near the motor cortex during voluntary movement (including recall of voluntary movement). The term "at the time of voluntary movement" as used in the present disclosure means a process from the time when the subject 5 intends (remembers) the voluntary movement to the success or failure of the voluntary movement. "Event-related desynchronization" can occur during this voluntary movement, triggered by the intention (recollection) of the voluntary movement. The frequency bands in which the power is reduced due to event-related desynchronization are mainly α waves (for example, frequency bands of 8 Hz or more and less than 13 Hz) and β waves (for example, frequency bands of 13 Hz or more and less than 30 Hz).

According to the rehabilitation support system 100 having such a configuration, it is possible to realize effective rehabilitation by exercise therapy in the subject 5 while reducing the burden on the medical staff. Further, according to the rehabilitation support system 100, for example, the timing of assisting the voluntary movement does not vary due to human factors such as the skill level of the medical staff who assists the voluntary movement of the subject 5, and the effect of the rehabilitation varies. Is reduced. In particular, in the rehabilitation support system 100, it is possible to assist the voluntary movement of the subject 5 at the timing when the characteristic change in the brain wave occurs (that is, the timing when the brain region is actually activated). As described above, in the rehabilitation support system 100, since training can be performed in accordance with the timing of brain activity, it can be expected to contribute to learning and establishment of correct brain activity. In particular, it is difficult for the subject 5 and the medical staff alone to determine whether or not a characteristic change has occurred in the brain wave. Therefore, by using the rehabilitation support system 100, effective rehabilitation that is difficult to realize only by the subject 5 or the medical staff becomes possible.

As shown in FIGS. 3A and 3B, the headset 1 includes a main body 15, a frame 17, and an electrode portion 11. The main body 15 has a box shape, and has a signal processing unit 12, a communication unit 13, and a battery 14 inside (see FIG. 2). The headset 1 is battery-powered, and operating power for the signal processing unit 12, the communication unit 13, and the like is supplied from the battery 14.

The electrode portion 11 is an electrode for collecting an electroencephalogram (electroencephalogram signal) of the subject 5, and is, for example, a silver-silver chloride electrode. The electrode portion 11 may be silver, gold, platinum or the like. The electrode portion 11 has a first electrode 111 and a second electrode 112. As shown in FIG. 3B, the measurement points 51 set on the surface of the head 52 of the subject 5 include the first measurement point 511 and the second measurement point 512. The first electrode 111 is an electrode corresponding to the first measurement point 511 and is arranged on the first measurement point 511. The second electrode 112 is an electrode corresponding to the second measurement point 512 and is arranged on the second measurement point 512. Specifically, the first measurement point 511 and the second measurement point 512 are first from the midline center side (upper side) on the line connecting the midline center of the head 52 and the tragus front point of the right ear 522. The measurement points 511 and the second measurement points 512 are arranged side by side in this order.

When the subject 5 intends (remembers) to perform a voluntary movement, an electroencephalogram including a characteristic change is usually generated in the motor cortex corresponding to the part of the body in which the voluntary movement is performed. Therefore, the electroencephalogram measurement system 10 measures the electroencephalogram collected from the vicinity of the motor cortex corresponding to the injured site, which is the target of rehabilitation. Here, the motor cortex corresponding to the left finger is in the right brain of the subject 5, and the motor cortex corresponding to the right finger is in the left brain of the subject 5. Therefore, when the left finger 53 of the subject 5 is targeted for rehabilitation, it is acquired by the electrode portion 11 (first electrode 111 and second electrode 112) in contact with the right side of the head 52 of the subject 5. The electroencephalogram to be measured is the object of measurement by the electroencephalogram measuring system 10. That is, as shown in FIG. 3B, the electrode portion 11 (first electrode 111 and second electrode 112) is arranged on the measurement point 51 formed of a part of the right surface of the head 52 of the subject 5. As an example, the electrode portion 11 (first electrode 111 and second electrode 112) is arranged at a position represented by the electrode symbol “C4” in the International 10-20 Law. When the right finger of the subject 5 is to be rehabilitated, the measurement point consisting of a part of the left surface of the head 52 of the subject 5, for example, the electrode symbol "C3" in the International 10-20 Law. The electrode portion 11 (first electrode 111 and second electrode 112) is arranged at the represented position.

Further, the headset 1 further includes a reference electrode 113 and a ground electrode 114. The reference electrode 113 is an electrode for measuring the reference potential of the electroencephalogram signal measured at each of the first electrode 111 and the second electrode 112. The reference electrode 113 is located at the posterior position of either the left ear 521 or the right ear 522 on the head 52. Specifically, the reference electrode 113 is arranged at the rear position of the ear on the side of the head 52 where the first electrode 111 and the second electrode 112 are arranged. In the illustrated example, since the first electrode 111 and the second electrode 112 are arranged on the right surface of the head 52, the reference electrode 113 is arranged at the rear position of the right ear 522. The ground electrode 114 is arranged at the rear position of the left ear 521 or the right ear 522 of the head 52 where the reference electrode 113 is not arranged. Since the reference electrode 113 is located posterior to the right ear 522, the ground electrode 114 is located posterior to the left ear 521. Each of the reference electrode 113 and the ground electrode 114 is electrically connected to the main body 15 of the headset 1 by an electric wire 16 and is attached to the surface (scalp) of the head 52. The position where the reference electrode 113 and the ground electrode 114 are arranged may be the earlobe, not the position behind the ear as described above. The posterior position of the ear and the earlobe are locations on the head that are less susceptible to biopotentials derived from brain activity. That is, it is preferable that the reference electrode 113 and the ground electrode 114 are arranged in a place on the head that is not easily affected by the bioelectric potential derived from brain activity.

The signal processing unit 12 is electrically connected to the electrode unit 11 and executes signal processing on the electroencephalogram signal (electrical signal) input from the electrode unit 11 to generate electroencephalogram information. The brain wave signal includes a voltage signal which is a potential difference between the potential of the first electrode 111 and the potential of the reference electrode 113, and a voltage signal which is a potential difference between the potential of the second electrode 112 and the potential of the reference electrode 113. .. That is, the headset 1 measures the electroencephalogram of the subject 5 by measuring the action potential of the brain of the subject 5 at the electrode unit 11, and generates the electroencephalogram information representing the electroencephalogram at the signal processing unit 12. The signal processing unit 12 includes at least an amplifier that amplifies the brain wave signal and an A / D converter that performs A / D conversion, and outputs the amplified digital brain wave signal as brain wave information.

The communication unit 13 has a communication function with the information processing device 2. The communication unit 13 transmits at least the brain wave information generated by the signal processing unit 12 to the information processing device 2. In the present embodiment, the communication unit 13 can communicate with the information processing device 2 in both directions. The communication method of the communication unit 13 is, for example, wireless communication based on Bluetooth (registered trademark) or the like. From the communication unit 13, brain wave information is transmitted to the information processing device 2 at any time.

The frame 17 has a horseshoe shape (in other words, an Alice band shape). That is, the frame 17 has a shape extending from the center of the midline toward the left tragus and the right tragus in the first direction D1 when attached to the head 52. The frame 17 is composed of a strip-shaped metal plate long in the first direction and a resin cover that covers at least a part of the metal plate. The frame 17 has flexibility. Therefore, by bending the frame 17, it is possible to widen the distance between both ends of the first direction D1 of the frame 17. Therefore, when the frame 17 is attached to the head 52, the head 52 is passed between both ends of the first direction D1 of the frame 17 by appropriately bending the frame 17 according to the size of the head 52. Is possible.

The main body 15 is attached to the central portion of the frame 17 in the first direction D1. Here, as shown in FIG. 3A, the main body 15 has an opening for confirming whether the main body 15 is arranged at an appropriate position with respect to the median center portion when the frame 17 is attached to the head 52. A section 151 is provided. The opening 151 penetrates the main body 15 in a direction intersecting (orthogonal) with both the first direction D1 and the second direction D2. For example, when the headset 1 is attached to the head 52 of the subject 5, the medical staff arranges the main body 15 at a position where the central center of the head 52 can be visually recognized through the opening 151 of the main body 15. , It is possible to adjust the mounting position of the headset 1.

Holding portions 18 are connected to both ends of the first direction D1 of the frame 17. In other words, in a state where the frame 17 is attached to the head 52, the holding portion 18 is connected to one end of the frame 17 on the left tragus side and one end on the right tragus side, respectively. The holding portion 18 is configured to be movable with respect to the frame 17 along the first direction D1. That is, the distance between the holding portion 18 and one end of the frame 17 in the first direction D1 is adjustable.

As shown in FIG. 3B, the holding portion 18 has a base portion 18A and a pad 18B. Both the base portion 18A and the pad 18B are curved so as to be along the head portion 52 when the frame 17 is attached to the head portion 52.

The base portion 18A has a long flat rectangular parallelepiped shape in the second direction D2 and is connected to the frame 17. One end of the base 18A in the second direction D2 (here, one end on the occipital nodule side of the head 52) has a larger size in the first direction D1 than the other parts of the base 18A. A hook-and-loop fastener is provided at a portion of the base portion 18A facing the head portion 52.

The pad 18B has a long flat rectangular parallelepiped shape in the second direction D2 and is attached to the base 18A. The pad 18B is located between the base 18A and the head 52 with the frame 17 attached to the head 52, and comes into contact with the head 52. The pad 18B is made of urethane resin, for example, and has a lower hardness than the base 18A. Therefore, when the pad 18B comes into contact with the head 52 while the frame 17 is attached to the head 52, the pad 18B sandwiched between the headset 1 and the head 52 is deformed, and the head set 1 to the head The force applied to 52 is reduced.

A hook-and-loop fastener is attached to a portion of the pad 18B facing the base portion 18A. Then, the pad 18B is attached to the base 18A by connecting the hook-and-loop fastener of the pad 18B to the hook-and-loop fastener of the base 18A. In this way, the pad 18B is removable from the base 18A.

A pair of hooking portions 184 are provided at both ends of the holding portion 18 in the second direction D2. The hook portion 184 is formed in a hook shape, and is configured so that one end of the band is hooked. The band has a long shape along the circumferential direction (second direction D2) of the head 52 and has elasticity. The band is attached to the head 52 by hooking both ends thereof on the hooking portions 184 on the frontal side and / or the occipital side of the pair of holding portions 18, respectively. By wearing the band, the headset 1 is firmly fixed by the head 52. Therefore, it is possible to prevent the headset 1 from being displaced due to a change in the posture of the subject 5.

The frame 17 is further provided with a pair of mounting portions 19. The pair of mounting portions 19 are provided on both sides of the main body 15 in the first direction D1. At least one of the pair of mounting portions 19 has a first electrode 111 and a second electrode 112. In the present embodiment, of the pair of mounting portions 19, the mounting portion 19 on the right ear 522 side of the subject 5 has the first electrode 111 and the second electrode 112.

The mounting portion 19 has a base 190, a first case 191 and a second case 192, and a handle 193. The base 190 has a shape that sandwiches the frame 17 in the second direction D2. The base 190 is configured to be movable in the first direction D1 along the frame 17. Therefore, by adjusting the position of the base 190 with respect to the frame 17 in the first direction D1, the positions of the electrode portions 11 (first electrode 111 and second electrode 112) can be adjusted as a result.

The handle 193 is provided on the base 190. The handle 193 is used to selectively switch between a state in which the base 190 is fixed to the frame 17 and a state in which the base 190 is movable with respect to the frame 17. Specifically, by tightening the handle 193, the base 190 is fixed to the frame 17, and by loosening the handle 193, the base 190 is movable with respect to the frame 17.

The first case 191 and the second case 192 are both tubular bodies having an elliptical bottom. In the first case 191, the first bottom portion (bottom portion facing the head portion 52) is attached to the base 190, and the first electrode 111 and the second electrode 112 are held inside. The first end (one end facing the head 52) of each of the first electrode 111 and the second electrode 112 protrudes from the first case 191. Both the first electrode 111 and the second electrode 112 are configured to be movable relative to the first case 191 so that the amount of protrusion from the first case 191 can be changed. A coil spring is housed in the first case 191. The coil spring is arranged between the second end of the first electrode 111 and the second electrode 112 and the second bottom portion (bottom portion opposite to the first bottom portion) of the first case 191. One end of the coil spring is fixed to the bottom of the first case 191.

The first end (one end facing the head 52) of the second case 192 is open, and the outer shape of the second case 192 when viewed from the normal direction of the surface (scalp) of the head 52 is larger than that of the first case 191. .. The second case 192 is combined with the first case 191 so as to house a part of the first case 191 inside through the opening. The second case 192 is configured to be movable relative to the first case 191 between the first position and the second position in the direction in which the coil spring expands and contracts. At the first position, the amount of protrusion of the first case 191 from the second case 192 is the minimum, and at the second position, the amount of protrusion of the first case 191 from the second case 192 is the maximum. The first end of the shaft penetrating the second bottom of the first case 191 is fixed to the inner bottom of the second end (one end opposite to the first end) of the second case 192. The second end of the shaft is fixed to the first electrode 111 and the second electrode 112. Therefore, by moving the second case 192 between the first position and the second position with respect to the first case 191, the first electrode 111 and the second electrode 112 are moved along with the movement of the second case 192 and the shaft. Also move. That is, by moving the second case 192 with respect to the first case 191, it is possible to adjust the amount of protrusion of the first electrode 111 and the second electrode 112 from the first case 191.

Further, the second case 192 is configured to be movable in the second direction D2 with respect to the first case 191 at the second position. Then, by moving the second case 192 in the second direction D2 at the second position, the first end of the second case 192 is hooked on the second bottom of the first case 191. Here, when the second case 192 is moved from the first position to the second position by pulling the second case 192, the first electrode 111 and the second electrode 112 move to the inside of the first case 191. The coil spring is compressed. Then, when the pulling force of the second case 192 is released, the first electrode 111 and the second electrode 112 return to their original states due to the elastic force of the coil spring. On the other hand, when the second case 192 is hooked on the first case 191 as described above, the movement of the second case 192 from the second position to the first position is restricted, so that the coil spring is maintained in a compressed state. be able to. That is, in this case, the state in which the first electrode 111 and the second electrode 112 have moved inward of the first case 191 can be maintained.

When the headset 1 is attached to the head 52 of the subject 5, each of the first electrode 111 and the second electrode 112 is maintained in a state of being pushed by the head 52 and moved inward of the first case 191. To. That is, each of the first electrode 111 and the second electrode 112 pushes the measurement point 51 of the head 52 by the elastic force of the compressed coil spring. When measuring the brain waves of the subject 5 with the headset 1, it is desirable that the first electrode 111 and the second electrode 112 are brought into close contact with the measurement point 51 of the head 52. Therefore, in the headset 1, the first electrode 111 and the second electrode 112 are pressed against the measurement point 51 by the elastic force of the coil spring to increase the degree of adhesion between the first electrode 111 and the second electrode 112 and the measurement point 51. ing. Here, the longer the time during which the first electrode 111 and the second electrode 112 are pressed against the measurement point 51, the more likely it is that erythema will occur at the measurement point 51 against which the first electrode 111 and the second electrode 112 are pressed. Become. Then, when erythema occurs at the measurement point 51, it is necessary to determine (evaluate) whether the erythema is a persistent erythema or a temporary erythema. Persistent erythema is thought to be caused by the leakage of red blood cells due to the rupture of blood vessels, which is likely to eventually lead to pressure ulcers. Since pressure ulcers are irreversibly impaired in ischemia, they often appear as erythema in the early stages of development. On the other hand, temporary erythema is reactive hyperemia due to dilation of microvessels in the deep dermis, not pressure ulcers.

In general, there is a finger pressing method as a method for easily distinguishing between persistent erythema and temporary erythema. The finger pressing method is a method in which the inspector presses the erythema portion with a finger for 3 seconds and determines whether or not the erythema portion turns whitish. If the erythema portion becomes white, it can be determined that the skin condition is reversible (reactive hyperemia) and not a pressure ulcer, and if it does not disappear white, it can be determined that the erythema is a persistent erythema.

However, the finger pressing method as described above has a problem that the judgment result varies greatly depending on the individual difference of the inspector. Therefore, it is preferable to measure the erythema value at the measurement point 51 by a method as described in the prior art and determine whether the erythema is a persistent erythema or a temporary erythema based on the erythema value. However, when hair grows at the measurement point 51 where erythema occurs due to the wearing of the headset 1 described above, it is difficult to convince the subject 5 to shave the hair, even for rehabilitation. On the other hand, if an attempt is made to measure the erythema value of the scalp under the hair without shaving the hair, the accuracy of measuring the erythema value may be significantly reduced due to the influence of the hair. Therefore, in evaluating the inflammation (erythema) occurring at the measurement point 51 of the subject 5, it is desired to reduce the influence of the hair on the measured value (erythema value) as much as possible without shaving the hair.

Next, the inflammation evaluation system (hereinafter, abbreviated as the evaluation system) 6 of the present embodiment will be described. As shown in FIG. 4, the evaluation system 6 evaluates the inflammation of the affected area using the measured values (erythema value and melanin value) measured by the measuring device 7.

The measuring instrument 7 used in the evaluation system 6 of the present embodiment includes a probe 70, an LED drive circuit 71, a light receiving circuit 72, a control circuit 73, and a transmission circuit 74.

The probe 70 has a cylindrical probe body 700 having a cavity inside. A circular opening 7000 is provided on the bottom surface of the probe body 700. A plurality of (for example, 16) LEDs 702 and a light receiving unit 703 are housed in the internal space of the probe main body 700.

The plurality of LEDs 702 include a plurality of types of LEDs having different wavelengths of emitted light, for example, an LED emitting green light having a wavelength of 568 nm, an LED emitting red light having a wavelength of 660 nm, and an infrared having a wavelength of 880 nm. Includes LEDs that emit light. A plurality of LEDs 702 including these three types of LEDs are arranged on one surface (lower surface in FIG. 4) of the light-shielding plate 701 provided in the probe main body 700.

The light-shielding plate 701 is formed in a disk shape having a circular through hole 7010 in the center. The light-shielding plate 701 is arranged in the probe main body 700 so that the through hole 7010 faces the opening 7000 of the probe main body 700.

The light receiving unit 703 is, for example, a photoelectric conversion element in which a photodiode chip is housed in a can with a glass lens. However, the light receiving unit 703 is not limited to the photoelectric conversion element having a photodiode chip, and may be a photoelectric conversion element having a photodiode. The light receiving portion 703 is housed in the probe main body 700 so that the optical axis passes through the center of the through hole 7010 of the light shielding plate 701 and intersects the center of the opening 7000 of the probe main body 700.

The LED drive circuit 71 is configured so that a drive current can be supplied to each of a plurality of LEDs 702 of the same type having the same wavelength of synchrotron radiation to emit light. For example, the LED drive circuit 71 has a constant current circuit and an analog switch. The analog switch turns on and off the electrical connection between the same type of LED 702 and the constant current circuit. The constant current circuit supplies a constant current to a plurality of LEDs 702 that are electrically connected via an analog switch. The on / off of the analog switch is controlled by the control circuit 73.

The light receiving circuit 72 applies a constant voltage in the forward direction to the light receiving unit 703, and measures the magnitude of the forward current flowing through the light receiving unit 703. Further, the light receiving circuit 72 outputs a measurement signal having a voltage value corresponding to the magnitude of the forward current (the amount of light received by the light receiving unit 703) to the control circuit 73.

The control circuit 73 is composed of, for example, a microcontroller. The control circuit 73 drives a control signal for turning on / off the analog switch for the LED drive circuit 71, and a plurality of LEDs 702 for emitting light of the same wavelength among the plurality of LEDs 702 for the LED drive circuit 71. The control signal to be instructed is transmitted. Further, the control circuit 73 AD-converts and captures the measurement signal output by the light receiving circuit 72, obtains the light intensity for each wavelength from the digitized measurement signal data (measurement data), and incorporates the obtained light intensity. Store in the memory of. Further, the control circuit 73 measures the red spot value (hemoglobin concentration) using the light intensity of the green light and the light intensity of the red light among the three types of light (green light, red light, and infrared light), and red. The melanin value (melanin pigment concentration) is measured using the light intensity of light and the light intensity of infrared light. However, the control circuit 73 can measure the erythema value and the melanin value at the same time in the measurement process for about 1 second each time. That is, in the present embodiment, the melanin value (melanin pigment concentration) corresponds to the intensity value.

The transmission circuit 74 has a general-purpose serial communication interface such as RS-232C. The transmission circuit 74 transmits the data of the measured values including the red spot value and the melanin value measured by the control circuit 73 to the evaluation system 6 via the transmission line. The transmission circuit 74 can also receive data such as control commands from the evaluation system 6 via the transmission line. However, the transmission circuit 74 may have a serial communication interface other than RS-232C such as RS-485 and USB (Universal Serial Bus), or may have a parallel communication interface.

Specific examples of the measuring instrument 7 as described above include a skin melanin pigment / hemoglobin measuring instrument (Courage + Megameter MX18 manufactured by Khazaka electronic GmbH). If this skin melanin pigment / hemoglobin measuring instrument is used as the measuring instrument 7, the erythema value and the melanin value at the measurement point 51 of the subject 5 can be measured in a short time. However, the measuring instrument 7 is not limited to the skin melanin pigment / hemoglobin measuring instrument.

As shown in FIG. 4, the evaluation system 6 of the present embodiment includes an acquisition unit 60 and an evaluation unit 61. The evaluation system 6 preferably further includes a storage unit 62 and a notification unit 63.

The acquisition unit 60 acquires the measured value from the measuring instrument 7 by transmitting data to and from the transmission circuit 74 of the measuring instrument 7 via the transmission line. That is, the acquisition unit 60 has the same communication interface as the communication interface of the transmission circuit 74 of the measuring instrument 7.

The evaluation unit 61 selects a measurement value satisfying a predetermined condition as a measurement value of an evaluation candidate from a plurality of measurement values acquired by the acquisition unit 60. Further, the evaluation unit 61 evaluates inflammation (erythema) of the affected area (measurement point 51 of the head 52 of the subject 5) based on the measured values of one or more evaluation candidates.

The storage unit 62 is preferably composed of an electrically rewritable non-volatile semiconductor memory such as a flash memory. The notification unit 63 preferably has a liquid crystal display and a drive circuit for driving the liquid crystal display. The notification unit 63 notifies the evaluator by displaying a message or a symbol representing the evaluation result of the evaluation unit 61 on the liquid crystal display. However, the notification unit 63 has an acoustic device such as a buzzer or a speaker, and may notify the evaluation result by sound (buzzer sound, voice message, etc.).

Here, the acquisition unit 60, the evaluation unit 61, and the storage unit 62 may be composed of semiconductor components in which a computer system is integrated on one semiconductor chip, such as a microcontroller. Alternatively, the acquisition unit 60, the evaluation unit 61, and the storage unit 62 may each be composed of independent electronic circuits. In any configuration, the evaluation unit 61 has hardware including a microprocessor and software including a program executed by the microprocessor.

Next, the operation of the evaluation system 6 of the present embodiment (evaluation method of the present embodiment) will be described. The evaluation of inflammation by the evaluation system 6 of the present embodiment is performed on the measurement point 51 of the head 52 of the subject 5 who has undergone rehabilitation by the rehabilitation support system 100 described above.

First, the evaluation unit 61 of the evaluation system 6 initializes the number of measurements (variable) n to 1 (step S1 in the flowchart of FIG. 5). The operator who operates the evaluation system 6 brings the probe 70 of the measuring instrument 7 into contact with the measurement point 51 of the subject 5 to measure the erythema value and the melanin value. However, it is desirable that the operator removes the hair at the measurement point 51 with his / her finger so that the hair at the measurement point 51 is not pinched between the probe 70 and the scalp as much as possible. Further, it is desirable that the operator brings the probe 70 into contact with the measurement point 51 at the measurement point 51 where the operator visually determines that the erythema value is the highest. Here, the operator once separates the probe 70 from the measurement point 51 of the subject 5 after each measurement work, and then contacts the measurement point 51 again to start the next measurement work and start the next measurement work to start the erythema value. And the melanin value is measured a predetermined number of times (7 times in this embodiment).

Here, the melanin value measured by the measuring instrument 7 is a value obtained by combining the melanin pigment concentration deposited on the scalp at the measurement point 51 and the melanin pigment concentration contained in the hair. That is, when the hair color of the subject 5 is black, it is estimated that the higher the melanin value, the larger the amount of hair sandwiched between the probe 70 and the measurement point 51 of the head 52. However, when the hair color of the subject 5 is white (white hair), it is estimated that the lower the melanin value, the larger the amount of hair sandwiched between the probe 70 and the measurement point 51 of the head 52. .. In the following description, the hair color of the subject 5 is black.

The acquisition unit 60 of the evaluation system 6 acquires the measured values (erythema value and melanin value) for seven times measured by the measuring instrument 7 from the measuring instrument 7 (step S2 in the flowchart of FIG. 5). The evaluation unit 61 stores the measured values F ₁ (Xk, Yk) for seven times acquired by the acquisition unit 60 in the storage unit 62. However, Xk is the k-th erythema value measured seven times in one measurement operation, and Yk is the k-th melanin value measured seven times in one measurement operation.

When the evaluation unit 61 receives the measured value F ₁ (Xk, Yk) for 7 times from the acquisition unit 60, the evaluation unit 61 increments the number of measurements n (step S3 in the flowchart of FIG. 5), and whether or not the number of measurements n is 5 or more. (Step S4 of the flowchart of FIG. 5). If the number of measurements n is less than 5, the evaluation unit 61 starts the countdown timer (step S5 in the flowchart of FIG. 5) and waits until the countdown timer counts up a predetermined time (for example, 15 minutes) (for example, 15 minutes). Step S6) of the flowchart of FIG.

When the countdown timer of the evaluation unit 61 counts up the predetermined time, the operator uses the measuring device 7 to measure the erythema value and the melanin value of the measurement point 51 of the subject 5 seven times. The acquisition unit 60 of the evaluation system 6 acquires the measured values for seven times measured by the measuring instrument 7 from the measuring instrument 7 (step S2 in the flowchart of FIG. 5). The evaluation unit 61 stores the measured values F ₂ (Xk, Yk) for seven times acquired by the acquisition unit 60 in the storage unit 62.

When the evaluation unit 61 receives the measured value F ₂ (Xk, Yk) for 7 times from the acquisition unit 60, it increments the number of measurements n (step S3 in the flowchart of FIG. 5), and whether or not the number of measurements n is 5 or more. (Step S4 of the flowchart of FIG. 5). If the number of measurements n is less than 5, the evaluation unit 61 starts the countdown timer (step S5 in the flowchart of FIG. 5) and waits until the countdown timer counts up the predetermined time (step in the flowchart of FIG. 5). S6).

The processing of steps S2 to S6 in the flowchart of FIG. 5 is repeated every 15 minutes from the start of the evaluation until 60 minutes have elapsed. As a result, the storage unit 62 of the evaluation system 6, 7 × 5 times = 35 measurements F _i (Xk, Yk) (however, i = 1 to 5, k = 1 to 7) are stored ..

Subsequently, the evaluation unit 61 voted for the first time (the start of the evaluation immediately after) the fifth each time the (voted start about 60 minutes after) until seven readings F _i (Xk, Yk) of Candidate measured values are selected (step S7 in the flowchart of FIG. 6). That is, since the color of the hair of the subject 5 is a black, as the amount of hair that is sandwiched between the probe 70 of the measuring instrument 7 and scalp measurement point 51 is large, the measured value F _i (Xk, Yk) The melanin level Yk increases. Therefore, evaluation unit 61, by removing melanin value Yk is a predetermined upper limit value (first threshold value) Yth more than a measurement value F _i (Xk, Yk) from the evaluation of the target (Evaluation candidates), the hair impact measurements is estimated to be relatively small F _i (Xk, Yk) can be evaluated inflammation using. However, the upper limit value Yth is preferably set to a higher value as the melanin value of the scalp at the measurement point 51 of the subject 5 is higher.

7, the X axis is the erythema values, the two-dimensional orthogonal coordinate system with melanin value Y-axis, i-th seven measurements F _i (Xk, Yk) is a plot of. Evaluation unit 61, four measurements F _i having an upper limit Yth more melanin value Yk indicated by the dashed line parallel to the X axis in FIG. 7 (X1, Y1), F i (X2, Y2), F i ( _{X4, Y4), F i (} X7, Y7) except three measurements _{F i (X3, Y3),} F i (X5, Y5), selects the F _i (X6, Y6) to the measured value of the evaluation candidates ..

The evaluation unit 61 calculates the average value of the erythema values in the measured values of the evaluation candidates selected each time (step S8 in the flowchart of FIG. 6). The evaluation unit 61 determines whether or not the average value of each erythema value decreases with the lapse of time from the time when the evaluation starts (the time when the headset 1 is removed from the head 52) (in the flowchart of FIG. 6). Step S9). In FIG. 8, the elapsed time (0 minutes, 15 minutes, 30 minutes, 45 minutes, 60 minutes) from the time when the headset 1 is removed from the head 52 is taken on the horizontal axis, and the average value of the erythema value is taken on the vertical axis. A line graph showing the temporal change of the average value (hereinafter, abbreviated as the average value) of the erythema value of each time is shown. In FIG. 8, the average value of the time before the elapsed time of 0 minutes is the average value measured before (preliminary) the subject 5 performs the rehabilitation by the rehabilitation support system 100.

When the evaluation unit 61 determines that the average value of each round decreases with the passage of time from the start of the evaluation, the evaluation unit 61 then determines that the difference between the average value of the final round (after 60 minutes has passed) and the previous average value is absolute. The value is compared with a predetermined threshold (step S10 of the flowchart of FIG. 6). If the absolute value of the difference between the final mean value and the previous mean value is equal to or less than the threshold value, the evaluation unit 61 is particularly problematic because the erythema at the measurement point 51 of the subject 5 is a temporary erythema. It is determined that there is no (evaluation result OK) (step S11 in the flowchart of FIG. 6). On the other hand, in the evaluation unit 61, if the absolute value of the difference between the final mean value and the previous mean value is higher than the threshold value, the erythema at the measurement point 51 of the subject 5 is a persistent erythema, which is a problem. (Evaluation result NG) is determined (step S12 in the flowchart of FIG. 6). Further, the evaluation unit 61 also determines that the evaluation result is NG when it is determined that the average value of each time does not decrease with the lapse of time from the evaluation start time (steps S9 and S12 in the flowchart of FIG. 6). Finally, the evaluation unit 61 notifies the notification unit 63 of the evaluation result (step S13 of the flowchart of FIG. 6).

The evaluation system 6 evaluates whether the inflammation (erythema) generated at the measurement point 51 of the subject 5 is a temporary erythema or a persistent erythema as described above, and notifies the evaluation result. .. When the evaluation result is NG, that is, when the erythema at the measurement point 51 is evaluated as a persistent erythema, it is desirable to stop the rehabilitation for the subject 5 and treat the erythema generated at the measurement point 51 of the subject 5. ..

The operation of the evaluation system described above (process executed by the microprocessor of the evaluation unit 61 according to the program) is only an example. Further, the evaluation unit 61 (microprocessor) makes a final evaluation on the erythema of the measurement point 51, and the operator makes the measurement point 51 based on the change with time of the erythema value notified from the evaluation unit 61. A final evaluation may be made for erythema. Further, the same function as that of the evaluation system 6 may be embodied in a non-temporary recording medium in which a program for causing the computer system to execute the evaluation method is recorded.

Further, when the color of the hair of the subject 5 is white, the evaluation unit 61 removes the measured value whose melanin value is less than a predetermined lower limit value (second threshold value) from the evaluation candidates, thereby causing the hair (white hair). ) Can be evaluated using measurements that are presumed to have a relatively small effect. However, the lower limit is preferably set to a lower value as the melanin value of the scalp at the measurement point 51 of the subject 5 is lower.

In this embodiment, as a brain activity measuring device attached to the head 52 of the subject 5, a headset configured to measure brain waves by an electroencephalogram electrode (electrode portion 11) in contact with the head 52. Although 1 is illustrated, the brain activity measuring device is not limited to the headset 1. Examples of the brain activity measuring device other than the headset 1 include a functional near-infrared spectroscope. The functional near-infrared spectroscope includes a light emitting device that emits near-infrared light and a photoelectric conversion device that receives near-infrared light and converts it into an electric signal. A functional near-infrared spectroscope brings a light emitting device and a photoelectric conversion device into contact with the scalp, irradiates the brain with the near-infrared light of the light emitting device, and reflects the near-infrared light (reflected light) on the brain surface of the cerebral cortex. ) Is photoelectrically converted by a photoelectric conversion device to measure the blood flow state (brain activity) on the brain surface of the cerebral cortex. That is, in the functional near-infrared spectroscope, erythema may occur at the measurement point 51 when the measurement point 51 of the head 52 is pressed by the light emitting device and the photoelectric conversion device.

As described above, the inflammation evaluation system (6) according to the first aspect of the present disclosure evaluates inflammation occurring in the skin. The evaluation system (6) according to the first aspect is a measurement value including an erythema value and an intensity value (melanin value) of a color different from the erythema color at the skin measurement point (51) measured by the measuring instrument (7). The acquisition unit (60) for acquiring the above is provided. The evaluation system (6) according to the first aspect includes an evaluation unit (61) that evaluates inflammation based on the erythema value included in a plurality of measured values acquired by the acquisition unit (60). The evaluation unit (61) selects a measured value in which the intensity value (melanin value) of each of the plurality of measured values is within a predetermined range as the measured value of the evaluation candidate. The evaluation unit (61) evaluates inflammation based on the erythema value included in the measured values of the evaluation candidates.

The inflammation evaluation system (6) according to the first aspect presumes that the influence of hair growing on the skin is small by excluding measured values whose intensity value (melanin value) is not within a predetermined range from the evaluation candidates. Evaluate inflammation based on the erythema value. As a result, the inflammation evaluation system (6) according to the first aspect can suppress a decrease in evaluation accuracy.

The inflammation evaluation system (6) according to the second aspect of the present disclosure can be realized in combination with the first aspect. In the evaluation system (6) according to the second aspect, the evaluation unit (61) sets the intensity value to at least one of the first threshold value and the second threshold value lower than the first threshold value. It is preferable to compare with the value. It is preferable that the evaluation unit (61) selects a measurement value having an intensity value of the first threshold value or less or an intensity value of the second threshold value or more among the plurality of measured values as the measurement value of the evaluation candidate.

The evaluation system (6) according to the second aspect can suppress a decrease in evaluation accuracy in both the case where the body hair color is black and the case where the body hair color is white.

The inflammation evaluation system (6) according to the third aspect of the present disclosure can be realized in combination with the first or second aspect. In the evaluation system (6) according to the third aspect, it is preferable that the acquisition unit (60) acquires a plurality of measured values measured by the measuring instrument (7) at predetermined time intervals. It is preferable that the evaluation unit (61) selects the measurement value of the evaluation candidate from the plurality of measurement values acquired at predetermined time intervals. It is preferable that the evaluation unit (61) evaluates inflammation based on the temporal change of the erythema value in the measured value of the evaluation candidate.

In the evaluation system (6) according to the third aspect, the evaluation unit (61) evaluates inflammation based on the temporal change of the erythema value in the measurement value of the evaluation candidate, so that the erythema due to inflammation is temporary erythema. It is possible to evaluate whether it corresponds to erythema or persistent erythema.

The inflammation evaluation system (6) according to the fourth aspect of the present disclosure can be realized in combination with any one of the first to third aspects. In the evaluation system (6) according to the fourth aspect, it is preferable to include at least a storage unit (62) for storing the erythema value included in the measured value of the evaluation candidate. The evaluation unit (61) preferably evaluates inflammation based on the erythema value stored in the memory unit (62).

Since the evaluation system (6) according to the fourth aspect evaluates inflammation based on the erythema value stored in the storage unit (62) by the evaluation unit (61), it is not limited to immediately after the measurement of the measured value, but at any timing. Inflammation can be evaluated with.

The evaluation method according to the fifth aspect of the present disclosure is an evaluation method for evaluating inflammation occurring in the skin. The evaluation method according to the fifth aspect acquires a measured value including an erythema value at a skin measurement point (51) measured by a measuring instrument (7) and an intensity value of a color different from the color of the erythema. In the evaluation method according to the fifth aspect, the measured value in which the intensity value (melanin value) in each of the plurality of measured values is within a predetermined range is selected as the measured value of the evaluation candidate. The evaluation method according to the fifth aspect evaluates inflammation based on the erythema value included in the measured values of the evaluation candidates.

The evaluation method according to the fifth aspect can suppress a decrease in evaluation accuracy.

The program according to the sixth aspect of the present disclosure causes a computer system (evaluation unit 61) to execute the evaluation method according to the fifth aspect.

The program according to the sixth aspect can suppress a decrease in evaluation accuracy.

The non-temporary recording medium according to the seventh aspect of the present disclosure is a non-temporary recording medium readable by the computer system in which a program for causing the computer system to execute the evaluation method according to the fifth aspect is recorded. is there.

The non-temporary recording medium according to the seventh aspect can suppress a decrease in evaluation accuracy.

6 Inflammation evaluation system 7 Measuring instrument 51 Measuring point 60 Acquisition unit 61 Evaluation unit 62 Memory unit

Claims (7)

An evaluation system for evaluating inflammation occurring on the skin, and an acquisition unit for acquiring a measurement value including an erythema value at a measurement point of the skin measured by a measuring instrument and an intensity value of a color different from the color of the erythema.
It is provided with an evaluation unit for evaluating inflammation based on the erythema value included in the plurality of measured values acquired by the acquisition unit.
The evaluation unit selects a measurement value in which the intensity value of each of the plurality of measurement values is within a predetermined range as the measurement value of the evaluation candidate, and sets the erythema value included in the measurement value of the evaluation candidate. An inflammation evaluation system that evaluates inflammation based on it. The evaluation unit compares the intensity value with at least one of the first threshold value and the second threshold value lower than the first threshold value, and among the plurality of the measured values. The inflammation evaluation system according to claim 1, wherein the measured value whose intensity value is equal to or less than the first threshold value or whose intensity value is equal to or greater than the second threshold value is selected as the measured value of the evaluation candidate. The acquisition unit acquires a plurality of the measured values measured by the measuring instrument at predetermined time intervals, and obtains the plurality of measured values.
The evaluation unit selects the measurement value of the evaluation candidate from the plurality of measurement values acquired at the predetermined time, and evaluates inflammation based on the temporal change of the erythema value in the measurement value of the evaluation candidate. The evaluation system for inflammation according to claim 1 or 2. A storage unit for storing at least the erythema value included in the measured value of the evaluation candidate is provided.
The inflammation evaluation system according to any one of claims 1 to 3, wherein the evaluation unit evaluates inflammation based on the erythema value stored in the storage unit. It is an evaluation method for evaluating inflammation occurring on the skin, and a measured value including a erythema value at a measurement point of the skin measured by a measuring instrument and an intensity value of a color different from the color of the erythema is obtained.
A measurement value in which the intensity value of each of the plurality of measurement values is within a predetermined range is selected as an evaluation candidate measurement value, and inflammation is evaluated based on the erythema value included in the evaluation candidate measurement value. Evaluation method to do. A program for causing a computer system to execute the evaluation method according to claim 5. A non-temporary recording medium readable by a computer system, in which a program for causing the computer system to execute the evaluation method according to claim 5 is recorded.

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