KR100659496B1 - Near-infrared measurement device with auto-calibration function and method of using the same - Google Patents

Abstract

A near-infrared measurement apparatus having an auto-correction function and a method using the same are provided to prevent a standard sample from being polluted or lost by integrating the standard sample with a main body. A standard sample is used for correcting to measure an infrared wavelength of a specific region. A probe(110) has an optical source(112) and a light receiving sensor(114) for measuring the standard sample and body information of a user. A switch operation unit(140) is located on a side of an inner main body, and operates a lead switch of an outer main body. A printed circuit board(230) provides a user through a display unit such as a liquid display apparatus by processing information measured in the light receiving sensor(114). A spring pushes the inner main body by a pressure force. A power supply unit(250) provides a power energy from an external apparatus. A power switch(260) applies a power energy. A lead switch for correction(270) applies a power energy to perform a correction initially. A lead switch for measurement(280) applies a power energy to measure body information of a user.

Description

Near-infrared measurement device with auto-calibration function and method of using the same}

1 is a conceptual diagram illustrating the basic principle of a conventional near infrared measuring apparatus and a conceptual diagram of a conventional near infrared measuring apparatus,

2 is a schematic perspective view of a near infrared measuring apparatus according to the present invention,

Figure 3 is a cross-sectional view of the main part for explaining the structure of the rotation probe type near infrared measurement apparatus according to the present invention, Figure 3A is a calibration step of the rotation probe type near infrared measurement apparatus according to the present invention, Figure 3B is the rotation probe type near infrared measurement 3C is a measuring step of the rotary probe type near infrared measuring device,

Figure 4 is a cross-sectional view of the main portion for explaining the structure of the advanced probe type near infrared measurement apparatus according to another embodiment of the present invention, Figure 4A is a calibration step of the advanced probe type near infrared measurement apparatus according to the present invention, Figure 4B is the forward probe A close step of the type near infrared measuring apparatus, Figure 4C is a measuring step of the forward probe type near infrared measuring apparatus.

♠ Explanation of symbols for the main parts of the drawings.

100: present invention (near infrared ray measuring apparatus), 110: probe,

112: light source, 114: light receiving sensor,

116: rotation axis, 120: the inner body,

122: front part of the inner body, 130: standard sample,

140: switch operating means, 220: outer body,

222: front part of the outer body, 230: printed circuit board,

132: liquid crystal display, 240: spring,

250: power supply means, 260: power switch,

270: correction reed switch, 280: measurement reed switch

The present invention relates to a near-infrared measuring apparatus, and more particularly, to a near-infrared measuring apparatus having an automatic correction function capable of automatically correcting each time a user uses the near-infrared measuring apparatus to obtain his or her body information, and a method of using the same. It is about.

Many people today use various types of measuring devices to check their physical health. The measuring device is characterized in that the operation principle of the measuring device is different depending on the object to obtain the user's body information, the method of use is different.

Nowadays, a method of measuring near-infrared rays is known as a method of obtaining users' physical information. The basic principle of the near-infrared measurement method is as follows.

Near-infrared measurement uses a light source that emits infrared light in the mid-wavelength range between 750 and 2500 nm and emits it to the analyte, and then vibrates and rotates the molecules of the analyte due to the emitted infrared rays. It is an analysis method that can obtain information on vibration and rotational movement of the molecules, and check the structure of the molecules and perform quantitative analysis.

Most molecules are in a stable state, but when they absorb light energy, they are excited and become unstable and excited. At this time, in order to return the excited molecules to the stable state, the energy required for the vibration of the molecules is radiated by light or heat, and the like, and returned to the stable state again. Each molecule has a different energy required to vibrate depending on the wavelength, so the amount of light energy emitted is also different, resulting in a different spectrum. This phenomenon is used to quantitatively and qualitatively It can be analyzed.

The most precise method of measuring near-infrared radiation is to measure the spectrum, which is the response characteristic of each wavelength, by emitting infrared rays having various wavelengths on the analyte. Although this method is capable of precise measurement, it is very expensive, bulky and takes a long time because it needs to emit and measure infrared rays of various wavelengths.

One way to overcome this drawback is the method of measuring near-infrared rays using specific wavelengths. If you want to quantitatively analyze only one specific substance among various components, this method uses a single wavelength infrared ray with a high response characteristic to only one substance to be measured. In addition to being able to measure precisely, and to provide a small volume and low cost, low-cost, small and portable devices using a single wavelength or dual wavelength light source using this principle have been invented in the past.

FIG. 1A shows the response characteristics for this single wavelength and is a graph of energy absorption of hemoglobin, fat, water and protein for each wavelength. Therefore, if you want to use each single wavelength, for example, if you want to measure the subcutaneous fat component of the human body, the fat component responds most closely to the near-infrared rays in the 900 ~ 950nm region, so if you use a light source that emits light in this region, Fat components can be quantified, a light source near 1000 nm can be used to measure water or water, a light source near 1050 nm for proteins, and a light source near 830 nm for oxygen saturation in blood.

1B is a conceptual diagram illustrating the principle of conceptualizing a physical information measuring device using near-infrared rays having a single wavelength or a double wavelength.

As shown in FIG. 1B, the conventional NIR measuring apparatus 10 includes a probe 20 forming an overall body, and a light source that emits NIR, which is appropriately selected according to a substance to be measured therein. 30) and a light receiving sensor 40 for measuring energy emitted from the measurement target material of the endothelial tissue 50 of the user.

The conventional near-infrared measuring apparatus 10 emits near-infrared rays having a wavelength of a specific region from the light source 30 to the endothelial tissue 50 through the skin surface of the user, and the measurement target material of the endothelial tissue is The near-infrared vibrates and rotates, and emits constant energy to stabilize it. The energy is measured and analyzed by the light receiving sensor 40.

However, the light source 30 and the light receiving sensor 40 have different response characteristics for each part, and the characteristics also change according to external environmental factors such as temperature and humidity. In addition, the characteristics of the circuit driving the light source 30 and the circuit driving the light receiving sensor 40 also vary depending on external environmental factors.

Due to these factors, the conventional near-infrared measuring device should be calibrated by first measuring the probe on a separate standard sample provided separately from the measuring device before measuring the user's body information. Only after the sample was separated was there a disadvantage that the measurement object could be measured.

Therefore, in the conventional measuring device, if the process of mounting and calibrating the standard sample is omitted due to the user's mistake before measuring the object, the calibration is not performed before use, and thus a completely different value is measured. As the main body and the standard sample were separated from each other, the measurement was lost when the standard sample was lost.

In addition, the conventional near-infrared measuring device changes the characteristics of the light source 30, the light receiving sensor 40, and the circuits sensitively and frequently, so that after each measurement, the standard sample is mounted and calibrated, and the standard sample is separated again. After that, there was a hassle to measure the measurement device in close contact with the user's skin.

In addition, the conventional measuring device is always exposed because the standard sample is always exposed, foreign matters or damage to the standard sample will not function properly, and because of this correction is not made properly because of the error of the measurement value There were also disadvantages.

As such, the near-infrared measuring apparatus used in the prior art has stored the standard sample separately from the main body, and thus, there is a risk of contamination or loss caused by the standard sample, and the corrective action on the standard sample separated from the main body is used every time. The actual measurement behavior of the probe with respect to the object to be measured is not completely improved as a separate behavior.

Accordingly, an object of the present invention is to provide a near-infrared measuring apparatus that can prevent the problem of contamination of the standard sample and the problem of loss of the standard sample by integrating the standard sample in the main body.

It is also an object of the present invention to provide a near-infrared measuring apparatus capable of performing the above-described calibration of the standard sample and the measurement of the substance to be measured continuously and collinearly.

It is also an object of the present invention to provide a method of using a near-infrared measuring apparatus capable of performing the above-described calibration of a standard sample and the measurement of a substance to be measured continuously and collinearly.

The present invention relates to an improved product of a conventional near infrared measuring apparatus.

The present invention is a near-infrared measuring apparatus comprising: an inner body having a probe for directly measuring body information of a user; and an outer body capable of sliding and sliding the inner body in a portion thereof. Is a standard sample for correcting the measurement of the infrared wavelength of a specific region, a probe equipped with a light source and a light receiving sensor for directly measuring the standard sample and the user's body information, and a probe of the inner body. It is located on one side includes a switch operating means for operating the reed switch of the outer body in that position; The outer body is a conventional printed circuit board designed to process the information measured by the light receiving sensor and to present to the user through a display means such as a liquid crystal display device, a spring for pushing the inner body by a compressive force and Power supply means for supplying power energy from the outside, a power switch for applying the power energy, a reed switch for applying the power energy to perform the correction for the first time in use, and applying power energy to measure the user's body information It includes a reed switch for measurement.

In the present invention, the standard sample is mounted inside the inner body.

Further, in the present invention, the length L ₁ between the front part of the inner body and the front part of the outer body is the same as the length L ₃ between the switch operation means and the measurement reed switch. It is done.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in more detail. However, the accompanying drawings are only intended to describe the technical spirit of the present invention in more detail, and the technical spirit of the present invention is not limited thereto.

2 is a perspective view schematically showing a near infrared ray measuring apparatus according to the present invention,

3 is a cross-sectional view of an essential part for explaining the structure of a near-infrared measuring apparatus according to an embodiment of the present invention. FIG. 3A illustrates a correction step of the rotating probe-type near infrared measuring apparatus according to the present invention. 3B illustrates a close step of the rotary probe type near infrared measuring apparatus, and FIG. 3C illustrates a measuring step of the rotary probe type near infrared measuring apparatus.

In the present invention, when specifically referred to as a "rotational probe type measuring device", the measuring device means a near infrared measuring device of the type that the probe for measuring the near infrared ray of the standard sample and the measurement object rotates by 180 ° in the process. do.

The near-infrared measuring device 100 according to the present invention can insert and slide the inner main body 120 and the inner main body 120 in a part thereof, which includes a probe 110 for directly measuring the user's body information. It consists of an outer body 220 which is.

In the present invention, the inner body 120 must first be calibrated to measure the infrared wavelength of a specific region, and the standard sample 130 necessary for this purpose is mounted directly inside the inner body 120. Doing. This is significantly different from the conventional products are stored separately from the standard sample, or separated from the inner body 120. In addition, the working relationship of the probe 110 with respect to the standard sample 130 is significantly different from the conventional products, which will be found in turn below.

In the present invention, the inner body 120 includes a probe 110 therein, the probe 110 is a light source for directly measuring the body of the standard sample 130 and the user's body information 112 and the light receiving sensor 114 are mounted on one surface thereof. In the present invention, the light source 112 and the light receiving sensor 114 of the probe 110 is usually directed to the standard sample 130 of the above, when the user operates the correction reed switch 270 In this state, the measurement data regarding the standard sample can be measured immediately.

In the present invention, one side of the inner body 120 includes a switch operating means 140 for operating the reed switch 270, 280 of the outer body 220 in that position. This means that when the reed switches 270 and 280 and the switch operating means 140 are in the same position, the reed switches 270 and 280 are operated by interaction between them. The most preferred example is when the switch operating means 140 is installed as a permanent magnet or an electromagnet. In this case, the switch operation means 140 may be a method of applying power energy by pulling or pushing the correction reed switch 270 and the measurement reed switch 280 by magnetic force.

The near-infrared measuring device 100 according to the present invention includes an outer main body 220 capable of inserting the inner main body 120 in a part thereof and sliding at a portion in contact with the inner main body 120.

In the present invention, the outer body 220 is a conventional printed circuit board designed to process the information measured by the light receiving sensor 114 to present to the user through a display means such as a liquid crystal display device 232 And 230. The printed circuit board 230 may use a circuit commonly used in the near-infrared measuring apparatus of the art and its accessories, and is also electrically connected to the probe 110. Since it is equivalent to, the detailed description is omitted.

In the present invention, the outer body 220 is mounted therein, and includes a spring 240 for pushing the inner body 120 by a compressive force. In the present invention, the spring 240 performs at least two functions, the first function of the inner body 120 by pushing the inner body 120, unless a special external pressure is applied from the outside ) So that the front portion 122 is farthest from the front portion 222 of the outer body 220, and the second function thereof is also applied to the switch operating means 140, as long as no external pressure is applied. And the length between the measurement reed switch 280 and the farthest, and to prevent the measurement reed switch 280 is operated.

In the present invention, the outer body 220 includes a power supply means 250 for supplying power energy from the outside. The power supply means 250 may be a battery capable of supplying direct DC power, or an adapter converting an AC current into a DC.

In the present invention, the outer body 220 includes a power switch 260 to which the user applies the power energy, these are the same as a conventional product.

In the present invention, when the user wants to use the product, the outer body 220 must first correct the standard sample 130, for correction for applying power energy to perform such correction. Reed switch 270 is included. The installation position of the correction reed switch 270 is very important. This is because when the light source 112 and the light receiving sensor 114 wish to correct the standard sample 130, the correction reed switch 270 and the switch operation means 140 are operated at the position. It must be installed so that it exists in. In this state, the length (L between the length (L ₁₎ is the correction reed switch 270 and reed switch 280 for the measurement between the inner front panel portion 122 and the outer front panel 222 ₂ ) and the same state as the length ( L ₃ ) between the switch operating means 140 and the measuring reed switch 280, the correction reed switch 270 is the switch operating means 140 Is located just above). If the switch actuating means 140 is a permanent magnet or an electromagnet, the switch actuating means 140 may be located within a range in which tensile force by magnetic force is applied to each other, but preferably within a range coinciding with each other.

In the present invention, when the user wants to measure the body information by closely contacting the probe 110 to the skin surface of the user or another person, the outer body 220 uses the power energy to measure the body information of the user The measurement reed switch 280 is included. In addition, the measurement position of the reed switch 280 is very important, which means that the probe 110 is to be measured in close contact with the surface of the skin to measure body information, the measurement lead The switch 280 and the switch operating means 140 should be installed to be in the operating position. To this end, if the switch operating means 140 is a permanent magnet or an electromagnet, they should be located within the range of the tensile force by the magnetic force to each other.

In the present invention, the relationship between the inner body 120 and the outer body 220, the relationship between the correction reed switch 270 and the measurement reed switch 280, and the correction reed switch 270 ) And the relationship between the switch operating means 140, and the relationship between the measurement reed switch 280 and the switch operating means 140 forms the essential contents of the technical idea of the present invention.

In the present invention, the length L ₁ between the front part 122 of the inner body and the front part 222 of the outer body is the correction reed switch 270 and the measurement reed switch ( 280 is the same as the length ( L ₂ ), but in the measuring step of the body information is different from each other, rather, the length ( L ₁ ) is gradually changed to approach zero (0), and in this case The length L ₃ between the switch actuating means 140 and the measuring reed switch 280 is also gradually changed to approach zero, which eventually forms the same length. When the user grasps the outer body 220 and pushes it toward the measurement site, the front part 222 of the outer body is brought into close contact with the measurement site, and at the same time, the measurement reed switch This is because 280 is moved to the position of the correction reed switch 270, and the measurement reed switch 280 is operated by the switch operation means 140 in the state.

Referring to the operation relationship of the near infrared ray measuring apparatus 100 according to the present invention, as follows. 3A to 3C schematically illustrate the operating relationship of the near-infrared measuring apparatus 100 of the present invention.

When the user is in the initial state of holding the near-infrared measuring device 100 of the present invention by hand, the light source 112 and the light receiving sensor 114 face the standard sample 130, and in that state The correction reed switch 270 is located within the operating range of the switch operating means 140.

When the user turns on the power switch 260, all components are maintained in an initial state by power energy, and the correction reed switch 270 is operated in that state. When the correction reed switch 270 is operated, a correction value is obtained through the light source 112, the light receiving sensor 114, and the standard sample 130. The calculation of this correction value can be performed in a conventional manner. (See Figure 3A).

When the user grabs the outer body 220 and pushes it toward the skin to be measured further, the correction reed switch 270 is moved out of its position, and thus the correction reed switch 270 is automatically turned off. The light source 112 and the light receiving sensor 114 stop operation, and the probe 110 gradually rotates about the rotation shaft 116. The rotational motion of the probe 110 is the same as the operation principle of the rotary stamp (painting) that is conventionally used today, so a detailed description thereof will be omitted. (See attached drawing 3B).

When the user pushes the outer body 220 further to bring it into close contact with the surface of the skin to be measured, the front part 222 of the outer body reaches about the same position as the front part 122 of the inner body. do. At this time, since the probe 110 is rotated by 180 ° compared to the initial start, the light source 112 and the light receiving sensor 114 are directed toward the skin surface to be measured, and at the same time Measuring reed switch 280 is to reach the operating range of the switch operating means 140. Therefore, in the state where the light source 112 and the light receiving sensor 114 are in close contact with the skin surface to be measured, the measurement reed switch 280 turns on the power, and the probe 110 is The body information of the endothelial tissue to be measured is measured and then sent to the printed circuit board 230 to be displayed on the liquid crystal display 232 or the like. (See attached drawing 3C).

When the user checks the measured data and then weakens the pressure applied to the outer body 220, the outer body 220 is gradually reduced to the original position by the spring 240. At this time, the measurement reed switch 280 is out of the operating range of the switch operating means 140, and automatically turns off the measurement reed switch 280, the light source 112 and the light receiving sensor ( 114 is stopped, the probe 110 is rotated back to 180 °.

Therefore, the near-infrared measuring apparatus 100 according to the present invention is to recover the original home position when the user reaches the final state when the user completes one use.

Figure 4 is a cross-sectional view of the main portion for explaining the structure of the advanced probe type near infrared measurement apparatus according to another embodiment of the present invention, Figure 4A is a calibration step of the advanced probe type near infrared measurement apparatus according to the present invention, Figure 4B is the forward probe A close step of the near-infrared measuring device, and FIG. 4C illustrates a measuring step of the near-probe near-infrared measuring device. In the present invention, the forward probe type measurement device refers to a measurement device in which the probe 110 moves forward or backwards as it is without rotating inside the inner body 120.

In the present invention, the advance probe type near infrared measuring apparatus 100 is installed in the standard sample 130 and the light source 112 and the light receiving sensor 114, which are mounted on the inner body 120 are different from each other, The remaining principles of operation and relationships of operation are much the same.

First, in the initial state, the standard sample 130 is hinged to the upper portion of the inner body 120 based on the rotation shaft 132, the standard sample 130 by a deployment means 134, such as a spring ) Is spreading downwards. In this case, the light source 112 and the light receiving sensor 114 are installed toward the standard sample 130.

In this state, when the user turns on the power switch 260, the correction is initially performed in the same manner as described above, and when the user further pushes the outer body 220 toward the skin to be measured, the probe 110 pushes the standard sample 130 upward and folds upwards, and eventually reaches the surface of the skin to be measured without changing its direction. In this process, the correction reed switch 270 is automatically turned off, the measurement reed switch 280 is turned on to measure the body information inside the skin, after the user finishes the measurement It will be restored to its original way.

Referring to the method of using the near-infrared measuring device 100 according to the present invention configured as described above is as follows.

In the method of using the near-infrared measuring apparatus 100 according to the present invention, when the user grabs the outer body 220 by hand and presses the power switch 260 to ON, power is applied to the circuit to undergo a preparation step.

After the preparation step, the calibration should be performed for precise measurement, which checks whether the calibration reed switch 270 is turned on to check whether the probe 110 is in the initial state. If it is not turned ON, it waits until it is turned ON. If the correction reed switch 270 is turned ON, a calibration step of measuring the standard sample 130 by driving the light source 112 and the light receiving sensor 114 is performed. do. When the user confirms the correction of the standard sample 130 and pushes the outer body 220 further, the correction reed switch 270 is turned off, and the process proceeds to the next step. (See attached drawing 3A and attached drawing 4A).

After the correcting step, the user proceeds to the main body contact step of continuously pushing the outer body 220 toward the skin to be measured. In this step, a slightly different process is performed according to the type of the near infrared measuring apparatus according to the present invention. For example, in the case of the rotary probe type, the probe 110 mounted inside the inner body 120 is rotated 180 ° while traveling therein, and in the case of the forward probe type, the standard sample 130 is pushed upward. As you go up, you will proceed. However, they are all the same in that they reach the extent to which they are finally in close contact with the skin to be measured. (See attached drawing 3B and attached drawing 4B).

After completing the main body adhesion step, the process proceeds to the full-scale measurement. In this step, the inner body 120, the outer body 220 and the probe 110 are all in close contact with the skin, and in this state, the measurement reed switch 280 is connected to the switch operating means 140. It is automatically turned on by the body, it automatically measures the body information of the endothelial tissue. When the measurement is completed, the measured value is displayed through the liquid crystal display 232. (See attached drawing 3C and attached drawing 4C).

When the user obtains a predetermined measurement value through the liquid crystal display 232 and then releases the pressure applied to the outer body 220, the user returns to the original recovery step. In this step, when the user releases the pressure applied to the outer body 220, the measurement reed switch 280 is turned off by the action of the spring 240 is turned off, and then The main body portion will proceed in the reverse direction of the adhesion step, and finally return to the initial state.

In this manner, the near-infrared measuring apparatus 100 according to the present invention repeatedly performs the body information of the endothelial tissue every time, and each time, once the measurement is completed, the original state is automatically returned to the original state for the next measurement. It is done.

As described above, the near-infrared measuring device according to the present invention securely mounts the standard sample inside the device, so that there is no fear of contamination from the outside and no fear of loss.

In addition, the near-infrared measuring apparatus according to the present invention can not only automatically perform the first correction step, but also automatically perform the final measurement step on the continuous line thereof, and can be performed by one simple operation. There is an advantage.

In addition, since the near-infrared measuring device according to the present invention can be restored to the initial initial stage after being used by the user once, and the calibration step can be performed again in that state, it is always necessary to undergo the calibration step and then perform the measurement step. Being able to perform, there is an advantage that the metrics and measurement data have a very precise and accurate characteristics.

In addition, the near-infrared measuring apparatus according to the present invention can be used for measuring specific body information by replacing the printed circuit board, the standard sample, the light source, the light receiving sensor, and the like, and thus, the application range is very wide. . For example, by using the near-infrared measuring apparatus according to the present invention, it is possible to measure a user's body fat component, protein, moisture, oxygen saturation, blood sugar, and the like.

Although the near-infrared measuring apparatus according to the present invention has been described in detail above, this is only for describing the most preferred embodiments of the present invention, and the present invention is not limited thereto, and the scope thereof is determined by the appended claims. Are limited.

In addition, anyone of ordinary skill in the art will be able to make various modifications and imitations by the description of the specification of the present invention, but it will be apparent that this is also outside the scope of the present invention.

Claims (5)

Near-infrared ray composed of an inner body 120 having a probe 110 for directly measuring a user's body information, and an outer body 220 that can insert and slide the inner body 120 in a part thereof. In the measuring device, a). The inner body 120 includes a standard sample 130 for correcting the measurement of the infrared wavelength of a specific region; A probe 110 having a light source 112 and a light receiving sensor 114 for directly measuring the standard sample 130 and the user's body information; Located on one side of the inner body 120 includes a switch operating means (140) for operating the reed switch of the outer body (220) in that position; b). The outer body 220 includes a conventional printed circuit board 230 designed to process the information measured by the light receiving sensor 114 and present it to the user through display means such as a liquid crystal display device 232; A spring 240 for pushing the inner body 120 by a compressive force, and a power supply means 250 for supplying power energy from the outside; A power switch 260 for applying the power energy; A correction reed switch 270 for applying power energy to perform correction for the first time in use and a measurement reed switch 280 for applying power energy to measure body information of the user; Near-infrared measuring device comprising a. The method of claim 1, The standard sample 130 is a near-infrared measuring device, characterized in that mounted to the inside of the inner body (210). The method of claim 1, The length L ₁ between the front part 122 of the inner body and the front part 222 of the outer body is the length between the calibration reed switch 270 and the measurement reed switch 280 in the calibration step. The same as ( L ₂ ), but differs from each other in the measurement of the body information, rather the length ( L ₁ ) is gradually changed to approach zero (0), and in this case the switch operating means 140 And a length L ₃ between the measuring reed switch 280 and the measuring reed switch 280 are gradually changed to approach zero, and they eventually form the same length. The method of claim 1, As the user applies pressure to the outer body 220 and pushes it toward the skin to be measured, the front part 222 of the outer body gradually reaches almost the same position as the front part 122 of the inner body. Near-infrared measuring apparatus, characterized in that for measuring the body information of the endothelial tissue to be measured by operating the measurement reed switch 280 in the state.  a). After the user presses the power switch 260 to turn it ON and the power is applied to the circuit and the preparation step is performed, the correction reed switch 270 is turned on to drive the light source 112 and the light receiving sensor 114 to the standard sample 130. A correction step of measuring; b). A main body contact step of the user continuously pushing the outer body 220 toward the skin to be measured; c). In a state where both the inner body 120, the outer body 220, and the probe 110 are in close contact with the skin, the measurement reed switch 280 is automatically turned on by the switch operating means 140, thereby automatically. A measurement step of measuring body information of the endothelial tissue; d). When the pressure applied to the outer body 220 is released, the measurement reed switch 280 is turned off by the action of the spring 240 is turned off, then in the reverse direction of the main body close contact step Proceeding, the original recovery step to finally return to the initial state; How to use the near-infrared measuring device comprising a.

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