WO2018159191A1

WO2018159191A1 - Biological information acquisition device and band for mounting biological sensor

Info

Publication number: WO2018159191A1
Application number: PCT/JP2018/002945
Authority: WO
Inventors: 添田　薫; 勝桜井
Original assignee: アルプス電気株式会社
Priority date: 2017-03-02
Filing date: 2018-01-30
Publication date: 2018-09-07

Abstract

[Problem] To provide a biological information acquisition device which is suitable for continuous long-term mounting, and in which the force of pressing a sensor body against the surface of a living body can be easily adjusted to a proper range, and light contamination during measurement, which causes deterioration of measurement accuracy, is suppressed. [Solution] This biological information acquisition device (1) is provided with: a biological sensor (2) having a measuring part that emits light to the surface of a living body and receives the light that passes through the surface of the living body; and a band (3) for mounting the biological sensor (2) on the living body, wherein the band (3) has a mounting part (9) on which the biological sensor (2) can be mounted and an elastic body (8) covering the biological sensor (2) mounted on the mounting part (9), and the biological sensor (2) is held by the elastic force of the elastic body (8) at a position at which the biological information can be measured.

Description

Biometric information acquisition device and biosensor mounting band

The present invention relates to a biometric information acquisition apparatus including a biosensor having a measurement unit that receives light emitted toward a living body and a biosensor mounting band.

Conventionally, in order to measure biological information that can be acquired from a biological surface, a sensor that is worn on an arm, a finger, or the like has been used. For example, a biological information acquisition device (biological state measurement device) described in Patent Literature 1 is wound around a sensor body having a measurement unit that measures a state of the living body by contacting the living body, and around a living body mounting site. A biological information acquisition device comprising: a band that is rotated and attaches the sensor body to a living body mounting site; and a band fixing portion having a band insertion hole through which the band is passed at a side end portion of the sensor body. Is mainly made of an elastic material that deforms flexibly, and has a configuration in which the band itself is locked by the band insertion hole and the measuring unit is pressed toward the living body side by an elastic force due to the deformation of the band itself. .

JP 2005-324004 A

The biological information acquisition device of Patent Document 1 presses the sensor body toward the living body using the elastic force of the band communicated with the band insertion holes at both ends of the sensor body. However, since an elastic force is applied to both end portions of the sensor body, it is difficult to adjust the force that pushes the sensor body toward the living body within an appropriate range. For this reason, the sensor body is often mounted with an excessive force exceeding the appropriate range, and when it is mounted with an excessive force applied to the sensor body, pain, numbness, There is a problem that blood or the like is generated and the biosensor cannot be worn for a long time. Furthermore, since the surroundings of the sensor main body are not covered, the biometric information acquisition apparatus of Patent Document 1 has a problem that measurement accuracy is likely to decrease due to light contamination.
The present invention makes it easy to adjust the force that pushes the sensor body against the surface of the living body within an appropriate range, is suitable for long-time continuous mounting, and does not contain light during measurement that causes a reduction in measurement accuracy. An object of the present invention is to provide a suppressed biometric information acquisition device and a biosensor mounting band.

As a result of studies by the present inventors in order to solve the above-described problems, it is easy to adjust the force that presses the sensor body against the living body within an appropriate range by covering the biosensor attached to the mounting portion with an elastic body. At the same time, the inventors have found that the elastic body can suppress the mixing of light around the sensor body. This invention is completed based on the said knowledge, and is provided with the following structures.

The biological information acquisition apparatus of the present invention includes a biological sensor having a measurement unit that emits light on the surface of the living body and receives light that has passed through the surface of the living body, and a band that attaches the biological sensor to the living body. The band includes an attachment portion to which the biosensor can be attached and an elastic body that covers the biosensor attached to the attachment portion, and biometric information can be measured by the elastic force of the elastic body. The biological sensor is held at a position.
Here, the “position where biometric information can be measured” refers to a position where the biometric information can be acquired based on light that has passed through the biological surface received by the measurement unit. For example, the biological sensor directly contacts the biological surface. A position or a position where the distance from the surface of the living body is within a range corresponding to the detection capability of the biological sensor. The biosensor and the surface of the living body do not need to be in direct contact with each other, and a film capable of transmitting light, such as a transparent film or a thin gauze, may be interposed therebetween. By pressing the surface of the living body using the elastic force of the elastic body, the living body sensor can be stably held at a position where biological information can be measured.

The measuring unit emits light including near-infrared light toward the surface of the living body and receives light passing through the surface of the living body, and generates a signal corresponding to the near-infrared light included in the received light. You may do.

The elastic body is preferably an elastic cloth having elasticity. By using an elastic cloth, air permeability and hygroscopicity are improved, and a biometric information acquisition apparatus with a good wearing feeling is obtained. The elastic cloth preferably has a spring constant of 15 (gf / mm ² ) or less.

When the elastic body is an elastic cloth having elasticity, the band is formed by superimposing an inner elastic cloth on the living body surface side and an outer elastic cloth on the opposite side of the living body surface, and the outer elastic cloth. The biological sensor attached to the attachment portion may be held at a position where biological information can be measured by the elastic force.
By using the band in which the inner elastic cloth and the outer elastic cloth are overlapped, the force applied to the entire band mounting portion is made uniform, so that the comfort at the time of wearing is improved. In addition, by interposing the biosensor between the inner elastic cloth and the outer elastic cloth, it is possible to more effectively suppress light contamination during measurement.
It is preferable that the band has an edge along the longitudinal direction, and the edge has a larger spring constant than the elastic cloth. The state where the biosensor is attached to the attachment portion can be stably maintained by the edge portion.

The band includes a first engagement portion, a second engagement portion, and a locking hole, and the second engagement portion is in a state where the first engagement portion has passed through the locking hole. It may be possible to change the position of engagement with the joint.
By changing the position of the second engagement portion with which the first engagement portion is engaged, the strength for mounting the band can be adjusted.
The first engagement portion and the second engagement portion may be surface fasteners. By using the hook-and-loop fastener, the engagement position can be finely and easily adjusted.

The band for attaching the biosensor of the present invention includes an attachment portion to which a biosensor can be attached, and an elastic body that covers the biosensor attached to the attachment portion, and biometric information is obtained by the elastic force of the elastic body. The biosensor is held at a position where it can be measured.

According to the present invention, due to the elastic force of the elastic body covering the biosensor, a force that uniformly presses the living body surface is applied to the entire biosensor. Thereby, the state in which the biosensor is pressed against the surface of the living body at the time of mounting becomes stable, and the followability of the biosensor to the surface of the living body becomes good. Therefore, the wearer adjusts the force for pressing the biosensor to the surface of the living body without applying excessive force to the biosensor in order to securely hold the biosensor at a position where the biometric information can be measured. be able to. Furthermore, the elastic body which covers a biosensor blocks the light which mixes from the outside, and it can prevent that the measurement accuracy of a biosensor falls by mixing of light.

The perspective view which shows the outline | summary of the biometric information acquisition apparatus of 1st embodiment. The bottom perspective view showing the outline of the living body sensor in a first embodiment. The principal part bottom view which shows the outline | summary of the band in 1st embodiment In 1st embodiment, the schematic diagram explaining attachment of the biosensor to the attachment part of a band, (a) The state before biosensor attachment, (b) The state after biosensor attachment The perspective view which shows the outline | summary of the biometric information acquisition apparatus of 2nd embodiment. Sectional drawing of the AA line of FIG. 5 which shows the outline | summary of the band in 2nd embodiment. The principal part bottom view which shows the outline | summary of the band in 2nd embodiment (A) Schematic diagram showing a method for measuring the relationship between the amount of extension and elastic force in the examples, (b) Explanatory drawing explaining the shape of the measurement sample piece viewed from the direction of arrow A in (a) The graph which shows the result of having measured the extension amount of the measurement sample piece of an Example, and the elastic force which arises in a measurement sample piece by extension. Schematic diagram showing the vertical load applied to the surface of the living body when the biological information acquisition device is mounted The graph which shows the relationship between the amount of expansion | extension of the measurement sample piece of an Example, and the vertical load added to a wrist via a biosensor. The graph which showed the amount of extension of the measurement sample piece of an example, and the perpendicular load per unit area added to a wrist via a living body sensor Schematic diagram illustrating a method for measuring the relationship between the vertical load applied to the wrist via a biosensor and the feeling of wearing

(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted suitably.

FIG. 1 is a perspective view showing a schematic configuration of a biological information acquisition apparatus according to a first embodiment of the present invention. As shown in the figure, the biological information acquisition apparatus 1 of the present embodiment includes a biological sensor 2 and a band 3 for attaching the biological sensor 2 to the living body. In the following description of each member, for convenience, in a state where the biological information acquisition device 1 is mounted on a living body, the surface near the living body surface is referred to as a bottom surface, and the surface far from the living body surface is referred to as a top surface.

FIG. 2 is a bottom perspective view showing an outline of the biosensor. As shown in the figure, the biosensor 2 has a cubic outer shape having a substantially rectangular thickness, and includes a light emitting unit, a light receiving unit, a control unit, a wireless communication unit, a power supply unit, and the like (not shown). The substrate is inside. A measurement unit 4 is provided on the bottom surface of the biosensor 2, and the measurement unit 4 comes into contact with the surface of the living body and measures biological information related to the living body in a state of being attached to the band 3 and attached to the living body. .

Hereinafter, an embodiment in which the measurement unit 4 of the biological sensor 2 is brought into contact with the biological surface will be described. However, the biological sensor 2 is not limited to the position where the measurement unit 4 is in contact with the surface of the living body, and may be held at a position where biological information can be measured. For this reason, it is not necessary to set it as the aspect which the measurement part 4 contacted the biological body surface directly. For example, the biological sensor 2 may be held so that a film that can transmit light is interposed between the measurement unit 4 and the biological surface. Moreover, although the form provided with one biosensor 2 is demonstrated, this invention can also be implemented as a biometric information acquisition apparatus provided with two or more biosensors.

The measurement unit 4 emits light including near-infrared light toward the surface of the living body, receives light passing through the surface of the living body, and generates a signal corresponding to the near-infrared light included in the received light. The light emitted by the device itself is received after passing through the surface of the living body, and the biological information is measured based on near-infrared light included in the received light. The biological information includes blood hemoglobin amount, blood oxygen ratio, pulse rate, and the like.

FIG. 3 is a bottom view of the main part showing an outline of the band. FIGS. 4A and 4B are schematic diagrams for explaining the attachment of the biosensor to the attachment portion of the band. FIG. 4A shows a state before the biosensor is attached, and FIG. 4B shows the state after the biosensor is attached. .
The band 3 is composed of a flexible resin thin plate having elasticity, and an opening 5 is provided on the bottom surface thereof. A guide 6 made of a plate having a thickness smaller than that of the band 3 is formed along the opening 5 of the band 3. Since the opening 7 of the guide 6 is formed in a shape smaller than the bottom surface of the biosensor 2 shown by using a broken line in FIG. 3, the biosensor 2 can be locked and held. In addition, in a state where the biosensor 2 is held at a predetermined position, the measurement unit 4 of the biosensor 2 is exposed from the opening 7 of the guide 6 so that biometric information can be measured from the surface of the living body. The band 3 and the guide 6 are formed in a shape along the surface of the living body.

As shown in FIG. 4A, an elastic body 8 is provided in the opening 5 of the band 3. As shown in FIG. 4B, the biosensor 2 is attached between the guide 6 and the elastic body 8. The attachment portion 9 of the biosensor 2 is configured by the guide 6 and the elastic body 8 provided along the opening 5 of the band 3.

As shown in FIG. 1 and FIG. 4B, the entire upper surface and side surfaces of the biosensor 2 are covered with the elastic body 8 in a state where the biosensor 2 is attached to the attachment portion 9. Since the biosensor 2 is a cube having a thickness, the elastic body 8 is extended by attaching the biosensor 2, and the elastic body 8 is extended by the elastic force generated in the direction indicated by the double-sided arrow in FIG. The force indicated by the one-sided arrow in the same figure that presses the living body surface over the entire upper surface of the living body sensor 2 is uniformly applied. Thereby, the biosensor 2 can be held at a position where biometric information can be measured while maintaining stable contact between the measurement unit 4 of the biosensor 2 and the surface of the living body.

Examples of the elastic body 8 include an elastic cloth having elasticity and a resin film having elasticity. However, the elastic body 8 is preferably made of an elastic cloth from the viewpoint of air permeability and hygroscopicity. The thickness of the cloth is preferably 0.1 to 2 mm, more preferably 0.2 to 1.5 mm, and more preferably 0.3 to 1.0 mm from the viewpoint of providing usability suitable for continuous wearing. More preferably.

From the viewpoint of stably maintaining contact between the measurement unit 4 of the biosensor 2 and the surface of the living body, the elastic coefficient of the elastic body 8 is preferably 1 to 15 (gf / mm), and preferably 1.5 to 13 (gf / mm). gf / mm), more preferably 2 to 10 (gf / mm). In the case of the elastic body 8 in which a plurality of cloths are stacked, the elastic coefficient of the elastic body 8 is not a value as a single cloth, but a value as a result of stacking a plurality of cloths.

The elastic body 8 has a light shielding property. Here, “light shielding” refers to a function of blocking or reducing light that adversely affects the measurement of the measurement unit 4. Since the measurement unit 4 of the present embodiment uses near infrared light for measurement, the elastic body 8 has a function of blocking or reducing near infrared light. Examples of the material having a light shielding property against near-infrared light include metals such as carbon and aluminum.

As shown in FIG. 1, the band 3 is formed by connecting a locking hole 10 and a locking hole 11 provided at both ends in the longitudinal direction with a connecting member 12, thereby Mounted in a location suitable for measurement. One end of the connecting member 12 is attached to the locking hole 10 of the band 3, and a hook-and-loop fastener (first engaging portion) 13 and a hook-and-loop fastener (second engaging portion) are provided at the tip and outer surface of the other end. ) 14 is provided. By engaging the surface fastener 13 at the tip of the other end that has passed through the locking hole 11 with the surface fastener 14 on the outer surface of the connecting member 12, the band 3 can be mounted at a predetermined position on the living body. . By changing the position at which the surface fastener 13 is engaged in the surface fastener 14, the strength of mounting the band 3 can be adjusted. As the

surface fasteners

13 and 14, a set of surface fasteners configured to be detachable can be used. In FIG. 1, the band 3 including the connecting member 12 as a separate member is shown in a part thereof, but a portion corresponding to the connecting member 12 may be integrated with the band 3.

As shown in FIG. 4 (b), the force for bringing the biosensor 2 into contact with the surface of the living body is mainly given by the elastic force of the elastic body 8, so that even if the force for attaching the band 3 is not increased, The biosensor 2 can be held at a position where the biometric information can be measured while maintaining stable contact between the biosensor 2 and the biosurface. Therefore, the biometric information acquisition apparatus 1 according to the present embodiment prevents pain, numbness, ischemia, and the like from occurring due to excessively strong force for wearing the band 3, and prevents long-time wearing. Can be worn continuously for a long time.

(Second embodiment)
FIG. 5 is a perspective view showing an outline of the biological information acquiring apparatus according to the second embodiment. 6 is a cross-sectional view taken along line AA in FIG. 5 showing an outline of the band, and FIG. 7 is a bottom view of the main part. The biological information acquisition apparatus of this embodiment is different from the biological information acquisition apparatus of the first embodiment in that the band is configured by overlapping two cloths. Below, the structure of the band which concerns on a difference is demonstrated.

As shown in FIGS. 5 and 6, the inner elastic cloth (inner elastic body) 24 and the outer elastic cloth (outer elastic body) 25 are made of a band-shaped elastic cloth wider than the biosensor 2. In the band 23, an inner elastic cloth 24 on the living body side and an outer elastic cloth 25 on the opposite side of the living body are superimposed. By using the band 23 made of an elastic cloth as a whole, the wearing feeling of the biological information acquisition device 21 is improved.

As shown in FIGS. 6 and 7, an attachment portion 26 for attaching the biosensor 2 at a predetermined position is provided between the inner elastic cloth 24 and the outer elastic cloth 25. An opening 27 is formed in the inner elastic cloth 24 of the attachment part 26, and the measurement part 4 of the biosensor 2 attached to the attachment part 26 comes into contact with the living body surface through the opening 27. In the state attached to the attachment part 26, the measurement part 4 of the biosensor 2 contacts the living body surface by the elastic force of the outer elastic cloth 25.

As the inner elastic cloth 24 and the outer elastic cloth 25, the same elastic cloth used as the elastic body 8 in the first embodiment can be suitably used. The inner elastic cloth 24 and the outer elastic cloth 25 may be combined with each other, or may be combined with each other.

7, the band 23 includes an edge portion 28 having a larger spring constant than the inner elastic cloth 24 and the outer elastic cloth 25 along the longitudinal direction thereof. With this configuration, the biosensor 2 can be held at a position where biometric information can be measured by preventing the biosensor 2 from shifting in the bandwidth direction and maintaining a stable contact state.

The edge portion 28 can be formed, for example, by stitching the folded portions in a state in which both sides in the longitudinal direction of the inner elastic cloth 24 and the outer elastic cloth 25 are folded (overlapping four sheets). According to this configuration, the edge portion 28 having a large spring constant can be easily formed without using a separate member. In addition, as a method of forming the edge part 28, the method of using an adhesive agent etc. other than sewing are mentioned.

The biological information acquisition apparatus described in the first and second embodiments has a configuration in which the biological sensor is removable. Therefore, the present invention can be implemented as a biosensor mounting band that is used with a biosensor attached. The present invention can also be implemented as a biological information acquisition apparatus in which a biological sensor is fixed in a state where the biological sensor is attached to a band.

In the first and second embodiments, the embodiment in which the biological information acquisition device is attached to the wrist to hold the biological sensor near the wrist has been described. However, the part to be attached is not limited to the wrist, and the part to which the biological information acquisition device is attached may be a part that can hold the biological sensor at a position where biological information can be measured. The parts for measuring biometric information include the head (frontal head (forehead), temples, top of head, temporal region, back of head), neck, torso, arms (upper arm, forearm), hand (palm, back, finger), Legs (thighs, calves, ankles), feet (insteps, toes) and the like. In these illustrated parts, the forehead (forehead), the upper arm, and the back of the foot are suitable for measuring biometric information as well as the wrist. When worn on the head, the biometric information acquisition apparatus can be implemented as a cap such as a cap or hat, a hair band, or a part thereof. In this case, for example, the present invention may be implemented as a biological information acquisition device that holds a plurality of biological sensors at predetermined positions near the forehead.

The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

Hereinafter, the present invention will be described more specifically with reference to examples and the like, but the scope of the present invention is not limited to these examples and the like.

(Spring coefficient of elastic cloth)
Fig.8 (a) is a schematic diagram which shows the measuring method of the relationship between the expansion | extension amount of an elastic body and elastic force in an Example, FIG.8 (b) is the measurement seen from the direction of arrow A of Fig.8 (a). It is explanatory drawing explaining the shape of a sample piece. The length before the measurement sample piece 30 extends in the length direction is defined as an initial state. The initial length of the measurement sample piece 30 used in this example was 150 mm. As shown in FIG. 8 (a), a strip-shaped measurement sample piece 30 having a width of 40 mm and a length of 150 mm is leveled, one end 30A is fixed to a fixing jig 31, and a locking hole 30B in the vicinity of the other end is formed. Lock to the spring balance 32. Then, the spring balance 32 is moved in the horizontal direction indicated by the arrow H in FIG. 8A, and the extension amount of the measurement sample piece 30, that is, the moving distance from the initial state of the locking hole 30 B is measured using the ruler 33. did. The tension (gf) of the measurement sample piece 30 was measured using a spring balance 32 for each extension 10 mm of the measurement sample piece 30.
In this example, a supporter material (thickness 3 mm) and an elastic thin cloth (elastic cloth, thickness 0.5 mm) were used as the measurement sample piece 30. The elastic thin cloth was measured for one sheet and two stacked sheets.

FIG. 9 is a graph showing the results of measuring the amount of extension of the measurement sample piece of Example and the elastic tension generated in the measurement sample piece by extension. The spring constant of each sample piece obtained from the measurement results shown in FIG. 9 was as follows.
○ Supporter material (1 sheet): 30 (gf / mm)
△ Elastic thin cloth (1 sheet): 3.1 (gf / mm)
▲ Elastic thin fabric (2 layers): 6.2 (gf / mm)

FIG. 10 is a schematic diagram showing the vertical load applied to the living body when the biological information acquiring apparatus is mounted. As shown in the figure, in a state where one end 8A of the elastic body 8 is fixed to a predetermined position 41 of the wrist 40, the elastic force generated in the elastic body 8 by extending the elastic body 8 by pulling the other end 8B is expressed as T. Then, the vertical load f applied to the surface of the wrist 40 via the biosensor 2 can be obtained by Expression (1).
f = T × sin 45 ° (1)

FIG. 11 is a graph showing the relationship between the extension amount of the measurement sample piece of the example and the vertical load applied to the wrist via the biosensor, and FIG. 12 shows the extension amount of the measurement sample piece and the biosensor of the example. It is the graph which showed the vertical load per unit area added to a wrist via. From the results shown in these figures, when the supporter material is used, the vertical load f rapidly increases as the extension amount increases, whereas when the elastic thin cloth is used, the vertical load f increases. It can be seen that the weight f gradually increases.

FIG. 13 is a schematic diagram for explaining a method for measuring the relationship between the magnitude of vertical load applied to the wrist via the biometric sensor and the wearing feeling. The vertical load f applied to the wrist 40 via the biosensor 2 when the biosensor 2 placed on the wrist 40 was pushed into the wrist 40 was measured by the spring balance 32. The output amplitude obtained from the biosensor 2 at each vertical load was measured while changing the vertical load f. As a result, it was found that a stable measurement result can be obtained from the biosensor ^{2 when} the vertical load f per unit area is 0.16 (gf / mm ² ) or more. Moreover, if the vertical load per unit area is 0.70 (gf / mm ² ) or less, ischemia, numbness, pain, etc. are prevented from occurring on the wrist, and the biometric information acquisition device is worn comfortably and continuously. I understood that I could do it. Accordingly, the range of the optimum vertical weight that can stably measure biological information and can be continuously worn comfortably is such that the vertical weight f per unit area is 0.16 (gf / mm ² ) or more and 0.70. (Gf / mm ² ) or less. If the vertical load f per unit area is less than 0.16 (gf / mm ² ), it is difficult to perform stable measurement with the biosensor 2 (measurement unstable region). If the vertical load f per unit area exceeds 0.70 (gf / mm ² ), ischemia, numbness, pain, etc. may occur and it is difficult to always wear the biosensor 2 (always wearing difficult) region).

A to C shown on the vertical axis on the right side of the graph in FIG. 12 indicate A: optimum vertical weighting range, B: measurement unstable region, and C: constantly difficult mounting region. In addition, X1 to X3 shown on the horizontal axis of the graph indicate the range (stable extension range) of the elastic body 8 in which the vertical load f per unit area is A: the optimum vertical load range. When an elastic thin cloth was used as the elastic body 8, the stable extension range (X1, X2) could be widened for both one and two sheets. On the other hand, when a supporter material was used as the elastic body 8, the stable extension range (X3) was narrowed.

As described above, by using an elastic thin cloth having a stable elongation range of 50 mm or more as the elastic body 8, it is easy to mount so that the vertical load f per unit area is within the optimum vertical load range, And the biometric information acquisition apparatus 1 which can measure biometric information stably and continuously for a long time was obtained (refer FIG. 1).

1, 21: Biological information acquisition device 2: Biosensor 3, 23: Band 4:

Measurement unit

5, 7, 27: Opening portion 6: Guide 8: Elastic body 8A: One end 8B: Other end 9, 26: Mounting portion 10 , 11: Locking hole 12: Connecting member 13, 14: Hook fastener 24: Inner elastic cloth (elastic body)
25: Outer elastic cloth (elastic body)
28: Edge portion 30: Measurement sample piece 30A: One end 30B: Locking hole 31: Fixing jig 32: Spring balance 33: Scale 40: Wrist 41: Predetermined position T: Tension f: Vertical load

Claims

A biological sensor having a measurement unit that emits light on the surface of the living body and receives light passing through the surface of the living body, and a band that attaches the biological sensor to the living body.
The band has an attachment portion to which the biosensor can be attached, and an elastic body that covers the biosensor attached to the attachment portion,
The biological information acquisition apparatus characterized in that the biological sensor is held at a position where biological information can be measured by the elastic force of the elastic body.
The measuring unit emits light including near-infrared light toward the surface of the living body and receives light passing through the surface of the living body, and generates a signal corresponding to the near-infrared light included in the received light. The biological information acquiring apparatus according to claim 1,
The biological information acquisition apparatus according to claim 1 or 2, wherein the elastic body is an elastic cloth having elasticity.
The biological information acquisition apparatus according to claim 3, wherein a spring constant of the elastic cloth is 15 (gf / mm 2 ) or less.
The band is formed by superimposing an inner elastic cloth on the living body surface side and an outer elastic cloth on the opposite side of the living body surface,
The biological information acquisition apparatus according to claim 3, wherein the biological sensor attached to the attachment portion is held at a position where biological information can be measured by the elastic force of the outer elastic cloth.
The biological information acquiring apparatus according to claim 5, wherein the band includes an edge portion along a longitudinal direction thereof, and the edge portion has a spring constant larger than that of the elastic cloth.
The band includes a first engagement portion, a second engagement portion, and a locking hole,
The biological information acquisition apparatus according to claim 1, wherein the first engagement portion is capable of changing a position at which the first engagement portion is engaged with the second engagement portion in a state of passing through the locking hole.
The biological information acquiring apparatus according to claim 7, wherein the first engaging portion and the second engaging portion are hook-and-loop fasteners.
An attachment part to which the biosensor can be attached, and an elastic body that covers the biosensor attached to the attachment part,
A biosensor mounting band, wherein the biosensor is held at a position where biometric information can be measured by the elastic force of the elastic body.