WO2015068464A1

WO2015068464A1 - Living body information measurement device

Info

Publication number: WO2015068464A1
Application number: PCT/JP2014/073973
Authority: WO
Inventors: 伸明繁永
Original assignee: コニカミノルタ株式会社
Priority date: 2013-11-08
Filing date: 2014-09-10
Publication date: 2015-05-14

Abstract

This living body information measurement device is provided with a mounting main body forming an insertion/withdrawal opening, which is for the insertion and withdrawal of the finger of a living body, and a housing space, which houses the finger of the living body inserted via the insertion/withdrawal opening, and the mounting main body is provided with a finger withdrawal blocking unit that that blocks the withdrawal from the housing space of the finger of the living body inserted into the housing space.

Description

Biological information measuring device

The present invention relates to a biological information measuring apparatus that measures predetermined physiological information from a living body.

Various types of biological information measuring devices that measure predetermined physiological information (biological information) from a living body in order to know the state of the living body are known. For example, a pulse wave meter measures a pulse wave of a living body, for example, a pulse oximeter measures a blood oxygen saturation level of the living body, and a blood glucose meter measures a blood glucose level of the living body, for example. . One method for measuring biological information is a photoelectric method. A living body information measuring device using this photoelectric method measures predetermined living body information by projecting and receiving light on a finger of the living body, for example. For this reason, this photoelectric biometric information measuring device has a mounting portion for mounting the finger.

By the way, in such a photoelectric biometric information measuring device, while the light is projected and received on the finger and measured, the finger moves to move the finger relative to the light projecting / receiving position (measurement position). If the position shifts, an error occurs in the measured value. For this reason, it is necessary to guarantee the positional relationship between the measurement position and the finger position during measurement. As a technique for guaranteeing such a positional relationship, for example, there is a biological information measuring device disclosed in Patent Document 1.

The biological information measuring device disclosed in Patent Document 1 is a sensor unit for measuring a parameter related to predetermined biological information from a finger of a human body, performs operation control of the sensor unit, and is output from the sensor unit. A biological information measuring device comprising a device main body having control processing means for performing predetermined processing on a measurement signal, the first fixing portion engaging with the finger to be measured, and other than the finger to be measured A second fixing portion that engages with the finger, and the first fixing portion and the second fixing portion are connected to each other, and the sensor portion is assembled to the first fixing portion, The first fixing portion is positioned and mounted on the finger to be measured by engaging the finger to be measured, and the apparatus main body portion is mounted on the second fixing portion and / or the first fixing portion, and Before the two fixing parts and / or the first fixing part By the engagement of the other fingers and / or the measured finger, and is configured to be mounted above the other fingers and / or the measured finger. According to this configuration, not only the finger to be measured but also the fingers other than the finger to be measured are used to attach the sensor unit and the apparatus main body to the finger of the person to be measured. Since two or more fingers are attached in this manner, the finger to be measured is difficult to rotate within the first fixed portion, and the positional relationship between the sensor unit and the finger to be measured is stabilized.

As described above, since the biological information measuring device disclosed in Patent Document 1 is mounted using two or more fingers, the finger to be measured is difficult to rotate within the first fixed portion, and the sensor portion The positional relationship with the finger to be measured is stabilized. However, during measurement, not only the finger to be measured for projecting and receiving the measurement light, but also other fingers are restrained by the fixing portion, and the subject cannot move the other fingers freely. In particular, the pulse wave, blood oxygen concentration, and the like are measured over a relatively long time in order to monitor the state of the subject. For this reason, the biological information measuring device is also worn on the measurement subject for a relatively long time, and the measurement subject can freely move the other fingers during the long-time measurement. There is a risk of stress.

JP 2007-167184 A

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a biological information measuring device that can reduce a positional deviation of a finger with respect to a measurement position even with only a finger that projects and receives light. is there.

The biological information measuring apparatus according to the present invention includes an attachment main body formed with an insertion / extraction opening for inserting / removing a biological finger and an accommodation space for accommodating the biological finger inserted from the insertion / extraction opening, The main body includes a finger omission inhibiting unit that inhibits a finger of the living body inserted into the accommodation space from coming out of the accommodation space. Such a biological information measuring apparatus can reduce the positional deviation of the finger with respect to the measurement position even with only the finger on which light is projected and received.

The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

It is a three-view figure which shows the external appearance of the biological information measuring device in embodiment. It is sectional drawing in the II-II line | wire shown in FIG. 1 in the biological information measuring device of embodiment. It is sectional drawing in the II line | wire shown in FIG. 1 in the biometric information measuring apparatus of embodiment provided with the 1st finger omission inhibition part (1st prevention part) of a 1st aspect. It is a top view of a belly receiving part in a living body information measuring device of an embodiment provided with the 1st finger omission inhibition part of the 1st mode. It is sectional drawing in the II line | wire shown in FIG. 1 in the biometric information measuring apparatus of embodiment provided with the 1st finger omission inhibition part of a 2nd aspect. It is sectional drawing in the II line | wire shown in FIG. 1 in the biometric information measuring apparatus of embodiment provided with the 1st finger omission inhibition part of a 3rd aspect. It is a block diagram which shows the electrical structure of the biological information measuring device in embodiment. It is an external appearance perspective view which shows a mode that the finger | toe of the human body was mounted | worn with the biological information measuring device in embodiment. It is a partial cross section figure which shows a mode that the finger | toe of the human body was mounted | worn with the biological information measuring device in embodiment. It is sectional drawing in the II line | wire shown in FIG. 1 in the biological information measuring device of embodiment further provided with the 2nd finger omission inhibition part (2nd prevention part).

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted suitably. In this specification, when referring generically, it shows with the reference symbol which abbreviate | omitted the suffix, and when referring to an individual structure, it shows with the reference symbol which attached the suffix.

FIG. 1 is a three-sided view illustrating an appearance of a biological information measuring apparatus according to an embodiment. 1A is a top view, FIG. 1B is a side view, and FIG. 1C is a bottom view. FIG. 2 is a cross-sectional view taken along line II-II shown in FIG. 1 in the biological information measuring apparatus of the embodiment. FIG. 3 is a cross-sectional view taken along the line II shown in FIG. 1 in the biological information measuring device according to the embodiment including the first finger omission inhibition unit (first prevention unit) according to the first aspect. FIG. 4 is a plan view of the abdomen receiving portion of the biological information measuring device according to the embodiment including the first finger omission inhibiting portion of the first aspect. FIG. 5 is a cross-sectional view taken along the line II shown in FIG. 1 in the biological information measuring apparatus according to the embodiment including the first finger omission inhibiting unit of the second aspect. FIG. 6 is a cross-sectional view taken along line II shown in FIG. 1 in the biological information measuring apparatus according to the embodiment including the first finger omission inhibition unit of the third aspect. FIG. 7 is a block diagram illustrating an electrical configuration of the biological information measuring apparatus according to the embodiment. The cross-sectional views shown in FIGS. 3, 5 and 6 are partial cross-sectional views of the biological information measuring device.

The biological information measuring device in the embodiment is a device that measures predetermined physiological information (biological information) from the living body by being attached to a part of the living body. More specifically, this biological information measuring device is attached to a biological finger (for example, a finger), irradiates the biological finger with predetermined measurement light, and receives detection light coming from within the finger based on the measurement light. The photoelectric device obtains predetermined biological information based on the light reception result. The predetermined biological information is, for example, a biological pulse wave, pulse rate, pulse cycle, blood oxygen saturation, blood glucose level, and the like.

Such a biological information measuring device D (Da to Dc) includes, for example, a main body portion 1 and a mounting portion 2 for mounting a biological finger, as shown in FIGS. In these FIG. 1 to FIG. 6, an XYZ orthogonal coordinate system having the longitudinal direction of the biological information measuring device D as the X direction is set, and this XYZ orthogonal coordinate system is appropriately used for explanation of the biological information measuring device D.

The main body 1 processes a light reception result obtained by projecting and receiving light on a finger mounted on the mounting unit 2, and has a substantially rectangular parallelepiped box-shaped housing 11 and FIG. 7. Electrical components 4 to 8 are provided. The casing 11 is manufactured by molding using a mold, for example, from a resin material such as plastic, which can protect each of the components 4 to 8 from damage during use, transportation and storage of the biological information measuring device D. The

Here, the electrical configuration of the biological information measuring device D will be described. The biological information measuring device D includes, for example, an irradiation light receiving unit 4, a control processing unit 5, an input unit 6, as shown in FIG. A communication unit 7 and a power supply unit 8 are provided.

The irradiation light receiving unit 4 is connected to the control processing unit 5 and irradiates a biological finger with predetermined measurement light, and uses detection light coming from within the finger based on the measurement light to obtain predetermined biological information. In order to do so, it receives light. More specifically, the irradiation light receiving unit 4 is configured to irradiate the finger with measurement light according to the control of the control processing unit 5, and the control processing unit 5 receives the detection light and receives the light reception result (photoelectric pulse wave signal). And a light receiving unit 42 for outputting to the receiver. The detection light is obtained by allowing the measurement light to pass through the finger or reflecting the measurement light within the finger. For this reason, the irradiation unit 41 and the light receiving unit 42 are appropriately arranged so as to be able to use the transmitted detection light (for example, facing and spaced apart), or appropriately arranged so that the reflected detection light can be used. They are arranged in a relationship (for example, adjacent juxtaposition). In the biological information measuring device D in the present embodiment, as will be described later, the irradiation unit 41 and the light receiving unit 42 are arranged to face each other with a predetermined interval so that transmitted detection light can be used. (Opposed). The measurement light is light having a wavelength appropriately selected according to the type of biological information to be measured by the biological information measuring device D. For example, when a pulse wave, a pulse rate, a pulse cycle, and the like are measured as biological information, the measurement light is, for example, red light. For example, when blood oxygen concentration, blood glucose level, and the like are measured as biological information, the measurement light is a plurality of lights having different wavelengths and different wavelengths, for example, two lights of red light and infrared light. For example, the irradiation unit 41 includes an irradiation optical system, a light source such as a light emitting diode (LED), and a peripheral circuit thereof such as a drive circuit. For example, the light receiving unit 42 includes a light receiving optical system, a photoelectric conversion element such as a silicon photodiode, and a peripheral circuit thereof such as a current-voltage conversion circuit.

The control processing unit 5 is a circuit for controlling each unit of the biological information measuring device D according to the function of each unit and obtaining predetermined biological information based on the light reception result of the light receiving unit 42 in the irradiation light receiving unit 4. For example, it comprises a microcomputer having a CPU (Central Processing Unit), a memory, and peripheral circuits thereof. In the control processing unit 5, a control unit 51 and a biological information processing unit 52 are functionally configured by executing a program. The control part 51 is for controlling each part of the biological information measuring device D according to the function of each part. The biological information processing unit 52 is for obtaining predetermined biological information based on the light reception result (photoelectric pulse wave signal) of the light receiving unit 42 in the irradiation light receiving unit 4. As a method for calculating biological information, for example, Japanese Laid-Open Patent Publication No. 1-153139 (priority claim application based on United Kingdom (GB) 8719333 on August 14, 1987) and the above-mentioned Patent Document 1 are well-known. Conventional means are used.

As an example, in Japanese Patent Application Laid-Open No. 1-153139, the oxygen saturation is approximately the first and second obtained by a photodetector by irradiating a living body with first light having a wavelength of 660 nm and second light having a wavelength of 940 nm, respectively. When the direct current components in the second signal are DC1 and DC2, and the alternating current components are AC1 and AC2, they are calculated from (AC1 / DC1) / (AC2 / DC2). As another example, in Patent Document 1, the oxygen saturation is roughly determined by using the difference in absorbance between oxyhemoglobin and hemoglobin in red light having a wavelength of 660 nm and infrared light having a wavelength of 815 nm. Yes. That is, red light with a wavelength of 660 nm has the largest difference in absorption coefficient between oxyhemoglobin and hemoglobin, while infrared light with a wavelength of 815 nm has the same difference in absorption coefficient between oxyhemoglobin and hemoglobin. For this reason, the amount of transmitted red light increases as the amount of hemoglobin increases. On the other hand, the amount of transmitted infrared light does not change even if the ratio of oxygenated hemoglobin to hemoglobin changes. Thereby, it becomes possible to obtain | require oxygen saturation by calculating | requiring the ratio of the transmitted light quantity of red light and infrared light. In this way, biometric information is obtained by known conventional means.

The input unit 6 is connected to the control processing unit 5 and is a circuit for inputting instructions such as on / off and measurement start, and includes, for example, a button switch. The communication unit 7 is a circuit that is connected to the control processing unit 5 and transmits a communication signal to an external device by, for example, a wireless method. By transmitting the biological information obtained by the control processing unit 5 through the communication unit 7, it is not necessary to install a configuration for analyzing and storing the biological information in the biological information measuring device D. As a result, the display unit is omitted. Thus, downsizing, power saving and cost reduction can be realized. Note that the communication unit 7 may transmit the light reception result (photoelectric pulse wave signal) obtained by the light receiving unit 42 of the irradiation light receiving unit 4 to an external device as it is. Thereby, the biological information processing unit 52 of the control processing unit 5 can be omitted. The power supply unit 8 is a circuit for supplying power to each unit that requires power, such as the irradiation unit 41, the control processing unit 5, and the communication unit 7 in the biological information measuring apparatus D. The power supply unit 8 includes a battery, for example, a secondary battery and its peripheral circuit.

A light receiving element 422 to be described later in the light receiving unit 42 is accommodated in the mounting unit 2, and the irradiation light receiving unit 4, the control processing unit 5, the input unit 6, the communication unit 7, and the power supply unit 8 except for this are accommodated in the housing 11. The

Returning to FIG. 1 to FIG. 6, the mounting unit 2 is a member for mounting a biological finger (for example, a human finger) when measuring predetermined biological information. Installed and connected. More specifically, the mounting portion 2 includes, for example, a mounting main body portion 21, a stopper portion 22, and a first finger omission inhibiting portion 23 (23 a, 23 b, 23 c) in the present embodiment.

The mounting main body 21 is a member in which an insertion / extraction opening OH for inserting / removing a biological finger and an accommodation space SS for accommodating the biological finger inserted from the insertion / extraction opening OH are formed. In the present embodiment, the mounting main body 21 faces the accommodation space SS and receives a belly of the living body finger inserted from the insertion / extraction opening OH (the inner side of the fingertip, the part having the fingerprint, the surface facing the nail). A surface 211S and a back receiving surface 212S that faces the accommodation space SS and receives the back (outside of the fingertip, the surface on the nail side) of the living body finger inserted from the insertion / extraction opening OH are further formed. For example, in the present embodiment, the mounting main body portion 21 of the mounting portion 2 includes an abdomen receiving portion 211, a back receiving portion 212, and a pair of first and second connecting portions 213-1 and 213-2.

The abdomen receiving portion 211 has a substantially rectangular plate shape having an abdominal receiving surface 211S for receiving the abdomen of the living body finger when the living body finger is mounted in the accommodation space SS through the insertion / extraction opening OH. It is a member. The back support part 212 is a substantially rectangular plate having a back support surface 212S on one side for receiving the back of the living body finger when the living body finger is mounted in the accommodation space SS through the insertion / extraction opening OH. It is a member. The pair of connecting portions 213-1 and 213-2 are substantially rectangular plate-like members that connect the belly receiving portion 211 and the back receiving portion 212 to each other.

More specifically, the abdomen receiving portion 211 and the back receiving portion 212 are opposed to each other with the abdominal receiving surface 211S and the back receiving surface 212S spaced apart by a predetermined distance so as to form the accommodation space SS. One end side (+ Z direction end side) in the short direction (Z direction) of the first connecting portion 213-1 is one end side (+ Y direction) in the long direction (Y direction) of the back support portion 212. The other end side in the short direction (Z direction) of the first connecting portion 213-1 (the end side in the −Z direction) is one side in the long direction (Y direction) of the belly receiving portion 211. It is connected to the end side (the end side in the + Y direction). The one end side in the short direction (Z direction) of the second connecting portion 213-2 (the end side in the + Z direction) is the other end side in the long direction (Y direction) of the back support portion 212 (in the −Y direction). The other end side in the short direction (Z direction) (the end side in the −Z direction) of the second connecting portion 213-1 is the other end in the long direction (Y direction) of the belly receiving portion 211. It is connected to the side (the end side in the -Y direction). As a result, the belly receiving portion 211, the first connecting portion 213-1, the back receiving portion 212, the second connecting portion 213-2 and the belly receiving portion 211 are sequentially connected in this order in the circumferential direction (around the X axis). The belly receiving portion 211, the first connecting portion 213-1, the back receiving portion 212, and the second connecting portion 213-2 form a hollow columnar shape (tubular shape). The opening at one end of the hollow columnar body is an insertion / extraction opening OH for inserting / removing a finger of the living body, and the internal space of the hollow columnar body is inserted into the insertion / extraction opening (opening at the one end) OH. It becomes accommodation space SS which accommodates a finger. Accordingly, the belly receiving surface 211S of the belly receiving portion 211 faces the accommodation space SS facing the + Z direction, and the back receiving surface 2121S of the back receiving portion 212 faces the accommodation space SS facing the −Z direction.

In this embodiment, the belly receiving portion 211, the back receiving portion 212, the first and second connecting portions 213-1 and 213-2 include an elastic body that generates an elastic force for holding a finger, for example. A single body is formed by molding using a mold to form a mounting main body 21. As the elastic body, for example, a polymer material such as rubber and a spring are used. For example, substantially all of the mounting main body 21 (the abdomen receiving portion 211, the back receiving portion 212, the first and second connecting portions 213-1 and 213-2) may be formed of a resin such as rubber having elasticity. Further, for example, it may be formed of a resin in which a substantially U-shaped leaf spring is embedded. The space between the belly receiving surface 211S of the belly receiving portion 211 and the back receiving surface 212S of the back receiving portion 212 is narrower than the thickness of the finger accommodated in the accommodating space SS, and the accommodating space is Z The mounting main body 21 is configured so that the elastic force acts in the direction of closing in the direction.

The inner surface of the back support 212 is radially inner (−) as it moves away from the substantially central position in the longitudinal direction (Y direction) in both longitudinal directions (+ Y direction and −Y direction). It is gradually higher toward (Z direction). As a result, the back receiving portion 212 has a curved surface that substantially conforms to the external shape of the back of the living body's finger so that the hollow columnar body is radially outward (+ Z direction) at the approximate center in the longitudinal direction (Y direction). A recess that is curved and recessed is formed. The curved surface in this recess is the back support surface 212S. A through-hole having a predetermined shape and penetrating and opening in the thickness direction (Z direction) of the back support portion 212 is formed at a substantially center of the back support surface 212S of the back support portion 212. An optical window 411 is disposed. The light projection window 411 is a plate-shaped member that can be fitted into the through hole formed of a material that transmits at least the wavelength of the measurement light. One surface of the light projection window 411 faces the accommodation space SS, and the back support surface 212S. The other surface facing the one surface is opposed to the light emitting surface of a light emitting element (not shown) in the irradiation unit 41. Thus, by forming a through hole in the back support surface 212S and arranging the light projection window 411, the back support surface 212S is a measurement region surface for irradiating measurement light to measure predetermined biological information. (In this embodiment, the surface of the light projection window part 411) is included.

In the abdomen receiving portion 211, a concave portion that is curved and recessed toward the radially outer side of the hollow columnar body is formed at the approximate center in the longitudinal direction (Y direction). The recess is formed in a curved surface in both the long direction (Y direction) and the short direction (X direction) perpendicular thereto so as to substantially conform to the external shape of the belly of the living body finger, and this curved surface is the abdomen receiving surface 211S. It becomes. A through-hole having a predetermined shape and penetrating and opening in the thickness direction (Z direction) of the abdomen receiving part 211 is formed at a substantially center of the abdomen receiving part 211S of the abdomen receiving part 211. The window portion 421, the light receiving element 422, the light receiving element substrate 423, and the retaining band portion 27 are sequentially stacked in this order from the radially inner side to the radially outer side of the hollow columnar body. The light receiving window portion 421 is a plate-like member that can be fitted into the through-hole formed of a material that transmits at least the wavelength of the detection light, and one surface thereof faces the housing space and faces the stomach receiving surface 211S. The other surface facing the one surface is opposed to the light receiving surface of the light receiving element 422. By forming a through-hole in the abdomen receiving surface 211S and arranging the light receiving window 421 in this way, the abdomen receiving surface 211S can measure a measurement region surface for receiving detection light (in order to measure predetermined biological information) ( In the present embodiment, the surface of the light receiving window 412 is included. The light receiving element 422 is the above-described photoelectric conversion element of the light receiving unit 42, and the light receiving element substrate 423 is a support member that supports the light receiving element 422. The fastening band portion 27 is a band-shaped member, and as shown in FIG. 1, one portion from the center goes around each outer periphery of a part of the belly receiving portion 211, the first connecting portion 213-1 and the back receiving portion 212. The tip is connected and fixed to one side surface of the housing 11 in the main body 1, and the other part from the center is the outer periphery of a part of the belly receiving part 211, the second connecting part 213-2 and the back receiving part 212. , And the tip is connected and fixed to the other side surface of the housing 11 in the main body 1. As a result, the fastening band portion 27 holds the light receiving window portion 421, the light receiving element 422, and the light receiving element substrate 423 in the through hole, and the light receiving window portion 421, the light receiving element 422, and the light receiving element substrate 423 are dropped from the through hole. prevent.

In this embodiment, the both sides of the abdomen receiving surface 211S in the Y direction extend in the short direction (X direction) of the abdomen receiving portion 211, and the diameter of the hollow columnar body is a predetermined height with respect to the abdominal receiving surface 211S. A pair of high protrusions 24-1 and 24-2 are formed toward the inner side in the direction (+ Z direction). When a biological finger placed on the belly receiving surface 211S and received by the belly receiving surface 211S attempts to rotate around the insertion / extraction direction (X axis) or to be displaced in the orthogonal direction (Y direction), the pair of protrusions Since it hits one of the strips 24-1 and 24-2, the pair of protrusions 24-1 and 24-2 inhibits rotation around the X axis and displacement in the Y direction with respect to the living body finger. it can. The predetermined height (the length in the Z direction) is, for example, sub mm to several mm, and preferably about 0.5 to 1.5 mm from the viewpoint of effectively inhibiting such finger misalignment. is there. The predetermined width (the length in the Y direction) is, for example, several mm, preferably about 2 to 4 mm from the viewpoint of effectively inhibiting such finger misalignment. The length in the substantially X direction of the pair of protrusions 24-1 and 24-2 is the length over the entire side of the belly receiving surface 211S.

The stopper portion 22 is a member that stops the finger of the living body, and is disposed so as to be located in the opening at the other end (opening facing the insertion / extraction opening OH) in the hollow columnar body. More specifically, the stopper portion 22 is located radially inward (+ Z direction) of the hollow columnar body from the other end (−X direction end) of the belly receiving portion 211 on the opening side of the other end of the hollow columnar body. This is a projecting piece that is extended by a predetermined length. This stopper portion 22 prevents the living body finger inserted into the accommodation space SS from the insertion / extraction opening OH of the mounting body portion 21 from coming into contact with the stopper portion 22, thereby preventing the living body finger from deviating from the accommodation space SS. In addition, a living body finger can be quickly and appropriately positioned at a position where light should be projected and received in order to measure predetermined biological information.

The first finger omission inhibiting part (first prevention part) 23 is arranged between the position where the irradiation light receiving part 4 is arranged and the opening position of the insertion / extraction opening OH, and the living finger inserted into the accommodation space SS is accommodated in the accommodation space. It is a member for inhibiting the escape from SS. More specifically, in the present embodiment, the first finger omission inhibiting portion 23 is formed on the measurement region surface (the surface of the light receiving window portion 412 in the present embodiment) for receiving the detection light on the belly receiving surface 211S. It arrange | positions between an arrangement | positioning position and the opening position of the insertion / extraction opening OH.

For example, the configurations of the first to third aspects are preferably used for the first finger omission inhibiting unit 23. The finger drop inhibition unit 23a of the first aspect and the biological information measurement device Da using the same are shown in FIGS. 3 and 4, and the finger drop inhibition part 23b of the second aspect and the biological information measurement device Db using the same are shown. 5 and FIG. 6 shows a finger omission inhibiting portion 23c and a biological information measuring device Dc using the same according to the third embodiment.

As shown in FIGS. 3 and 4, the first finger omission inhibiting portion 23 a of the first aspect protrudes toward the inside of the accommodation space SS at a predetermined height with respect to the abdomen receiving surface 211 </ b> S, and inserts and removes a living body finger. It is a ridge that intersects the insertion / extraction direction. More specifically, the first finger omission inhibiting portion 23a of the first aspect is disposed at one end (end portion on the insertion / extraction opening OH side) of the hollow columnar body and has a predetermined length in the longitudinal direction (Y direction). This is a ridge that extends by a certain length and is higher by a predetermined height than the belly receiving surface 211S by a predetermined height toward the radially inner side (+ Z direction) of the hollow columnar body. For example, in the present embodiment, one end (+ X direction end) of the belly receiving portion 211 is on the radially inner side (+ Z direction) of the hollow columnar body on the opening side (insertion / extraction opening OH side) of the hollow columnar body. ) Is extended by a predetermined length, thereby forming the first finger omission inhibition portion 23a of the first aspect of the protrusion having a predetermined width. Therefore, the 1st finger omission inhibition part 23a of the 1st aspect of a protrusion is arrange | positioned so as to be orthogonal to the said insertion / extraction direction in this example. The predetermined height (the length in the Z direction) is, for example, several mm, preferably about 1 to 2 mm from the viewpoint of effectively inhibiting finger removal. The predetermined width (the length in the X direction) is, for example, from sub mm to several mm, preferably from about 0.5 to 2 mm, from the viewpoint of effectively inhibiting finger removal. The predetermined length (the length in the Y direction) is, for example, about several millimeters to several tens of millimeters, and preferably about 5 to 10 millimeters from the viewpoint of effectively inhibiting finger removal. In the present embodiment, as shown in FIG. 4, the predetermined length is the same as the length in the longitudinal direction (Y direction) of the belly receiving surface 211S.

As shown in FIG. 5, the first finger occlusion inhibiting portion 23b of the second aspect is a dissimilar material body formed of a material different from the anti-abdominal surface forming material forming the anti-abdominal surface 211S. For example, in the present embodiment, the first finger omission inhibiting portion 23b of the second aspect is a layered body having a substantially rectangular shape that is long in the orthogonal direction (Y direction) and is formed of a material different from the abdomen receiving surface forming material. is there. Between the arrangement position of the measurement area surface (in this embodiment, the surface of the light receiving window portion 412) for receiving the detection light and the opening position of the insertion / extraction opening OH, the first of the layered body is formed from the belly receiving surface 211S. A recess having a substantially rectangular shape, which is recessed by a thickness of the first finger occlusion inhibiting portion 23a in two modes, is formed in the belly receiving portion 211, and the first finger omission inhibiting portion 23a in the second mode of the layered body is The recess is fitted into the recess with, for example, an adhesive so as to be flush with the receiving surface 211S, and is fixed by adhesion. From the viewpoint of effectively inhibiting finger removal, for example, the length in the vertical direction (X direction) of the rectangular shape in the first finger removal inhibiting portion 23b is about several mm, preferably about 4 to 8 mm. The length in the horizontal direction (Y direction) is about several mm to several tens of mm, and preferably about 5 to 10 mm.

The first finger omission inhibiting portion 23b of the second aspect is different from a belly receiving surface forming material such as silicone (silicone resin), for example, and a material having a rough surface that is difficult to slip of a finger (for example, foamed rubber), and A material having a surface that can easily adsorb a finger (for example, a low-hardness urethane gel).

The first finger omission inhibition portion 23c of the third aspect is a roughened rough body as shown in FIG. For example, in the present embodiment, the first finger omission inhibiting portion 23c of the third aspect is provided with the arrangement position and the insertion / extraction opening of the measurement region surface (the surface of the light receiving window portion 412 in the present embodiment) for receiving the detection light. This is a rough surface layer which is a rectangular region which is located between the opening position of OH and is long in the orthogonal direction (Y direction), and is roughened by making the surface of the belly receiving portion 211 uneven in the Z direction. The rough surface layer is formed, for example, by transferring a rough surface shape formed on a mold. From the viewpoint of effectively inhibiting finger removal, for example, the length of the rectangular shape in the first finger removal inhibition portion 23c in the vertical direction (X direction) is about several mm, preferably about 4 to 8 mm. The length in the horizontal direction (Y direction) is about several mm to several tens of mm, and preferably about 5 to 10 mm. The roughness of the rough surface is, for example, a ten-point average roughness Rz of about 0.03 mm to 0.3 mm.

The first finger omission inhibition unit 23 may be configured by a plurality of combinations of the first finger omission inhibition units 23a to 23c of the first to third modes. For example, the first finger omission inhibition unit 23 may be a combination of the first finger

omission inhibition units

23a and 23b of the first and second modes. For example, the first finger omission inhibition unit 23 includes the first and second finger omission inhibition units 23. For example, the first finger omission inhibition unit 23a may be a combination of the first finger

occlusion inhibition units

23b and 23c of the second and third aspects. It may be. In this case, the first finger

omission inhibiting portions

23b and 23c of the second and third aspects are juxtaposed along the X direction. Further, for example, the first finger omission inhibition unit 23 may be a combination of the first finger omission inhibition units 23 to 23c of the first to third modes.

And in such a main body part 1 and the mounting part 2, the length of the main body part 1 in the longitudinal direction (X direction) is longer than the length of the mounting part 2 in the X direction. More than twice the length. Then, the mounting portion 2 is integrated with the main body portion 1 by a predetermined connection method such that the center position in the X direction is closer to the other end side in the X direction (−X direction end) than the center position in the X direction of the main body portion 1. Connected. Examples of the connection method include integral molding, fastening of screws and the like, adhesion of an adhesive, and fitting between a fitting recess and a fitting protrusion. By connecting to each other in the above length relationship and arrangement relationship, even when the biological information measuring device D is attached to the finger, it becomes difficult to prevent the operation of bending the joint of the finger. The burden on the person being measured is reduced even when worn on the monitor.

FIG. 8 is an external perspective view showing a state where a human finger is attached to the biological information measuring device according to the embodiment. FIG. 9 is a partial cross-sectional view illustrating a state in which a human finger is attached to the biological information measuring device according to the embodiment.

When biological information is measured by such a biological information measuring device D (Da to Dc), first, in a state where the biological information measuring device D is not worn on the finger of the living body, for example, as shown in FIG. The elastic force for pinching the living body finger inserted into the accommodation space SS through the insertion / extraction opening OH is generated by the elastic body of the mounting main body 21, and the insertion / extraction opening OH and the accommodation space SS are closed in the Z direction. It is elastically deformed. In this case, the distance from the belly receiving surface 211S to the back receiving surface 212S in the elastically deformed accommodation space SS is shorter (narrower) than the thickness of the finger of the living body to be measured.

When the biological information measuring device D is attached to the living body finger HF, the insertion / extraction opening OH and the accommodation space SS are expanded in the −Z direction against the elastic force generated by the elastic body of the attachment main body 21. As shown in FIG. 8, the living body finger HF is inserted into the accommodation space SS through the insertion opening OH in the −X direction as shown in FIG. Thus, in the state where the biological information measuring device D is attached to the finger HF of the living body, the attachment body in the direction of closing the insertion / extraction opening OH and the accommodation space SS in the Z direction by the elastic force generated by the elastic body of the attachment body 21. The living body finger HF is pinched by the mounting main body portion 21 as the portion 21 is about to deform. In this case, for example, the measurement light emitted from the irradiation unit 41 of the irradiation light receiving unit 4 in the region from the tip of the living body finger HF inserted into the accommodation space SS through the insertion / extraction opening OH to the first joint is provided. The living body finger HF may be disposed in the accommodation space SS so that detection light caused by the measurement light is received by the light receiving section 42 of the irradiation light receiving section 4 through the living body finger HF. .

In the biological information measuring apparatus D (Da to Dc) according to the present embodiment, the first finger omission inhibition unit 23 (23a to 23c) is provided between the position where the irradiation light receiving unit 4 is disposed and the opening position of the insertion / extraction opening OH. It is arranged. For this reason, the biological finger HF inserted into the accommodation space SS is not easily removed in the insertion / removal direction by the first finger removal inhibiting unit 23, and the position of the biological finger inserted into the accommodation space SS is more stable. Therefore, the biological information measuring device D in the present embodiment can reduce the positional deviation of the finger with respect to the measurement position even with only the finger HF on which light is projected and received.

In addition, the biological information measuring device D in the present embodiment is relatively simple with at least one of the first aspect protrusion 23a, the second aspect foreign material 23b, and the third aspect rough surface 23c. The one-finger omission inhibitor 23 can be realized. And when the 1st finger omission inhibition part 23 is comprised by the protrusion body 23a of a 1st aspect, the top part of the protrusion body 23a is in the hollow of the 1st joint of the biological finger HF inserted in accommodation space SS. Since the fingers can be engaged, the finger inserted into the accommodation space SS is less likely to be pulled out by the protruding body 23a, and the position of the finger HF inserted into the accommodation space SS is more stable. In the case where the first finger occlusion inhibiting portion 23 is configured by the different material body 23b of the second mode, as the different material body 23b, for example, a material having a rough surface that is difficult to slip of fingers, unlike the abdominal bearing surface forming material, Alternatively, a material having a surface that easily adsorbs a finger or the like can be used, and the biological finger HF inserted into the accommodation space SS is more difficult to be removed by the foreign material body 23b, and the biological finger inserted into the accommodation space SS. The position of HF is more stable. In the case where the first finger omission inhibition portion 23 is configured by the rough surface body 23c of the third aspect, the first finger omission inhibition portion 23 can be formed of the same material as the material for forming the abdomen receiving surface 211S, and the finger is difficult to slip. Therefore, the biological finger inserted into the accommodation space SS is more difficult to be removed by the rough surface body 23c, and the position of the biological finger HF inserted into the accommodation space SS is more stable.

In addition, by providing a plurality of the protrusions 23a of the first aspect, the foreign material body 23b of the second aspect, and the rough surface body 23c of the third aspect, the biological finger HF inserted into the accommodation space SS is It becomes more difficult to remove by the first finger omission inhibiting portion 23, and the position of the living finger HF inserted into the accommodation space SS is further stabilized. Therefore, such a biological information measuring device D can further reduce the positional deviation of the finger with respect to the measurement position even with only the finger that receives and projects light.

In the above-described embodiment (including the first finger omission inhibition unit of the first to third aspects, the same applies hereinafter), the biological information measuring device D (Da to Dc) further includes the second finger omission inhibition unit 25. You may prepare.

FIG. 10 is a cross-sectional view taken along the line II shown in FIG. 1 in the biological information measuring device of the embodiment further including a second finger omission inhibition unit (second prevention unit). The cross-sectional view shown in FIG. 10 is a partial cross-sectional view of the biological information measuring device.

The second finger omission inhibiting portion (second prevention portion) 25 is disposed on the back receiving surface 212S side, between the position where the irradiation light receiving portion 4 is disposed and the opening position of the insertion / extraction opening OH, and is placed in the accommodation space SS. This is a member for inhibiting the inserted biological finger from coming out of the accommodation space SS. More specifically, in the present embodiment, the second finger omission inhibiting portion 25 is the measurement area surface for irradiating the measurement light on the back support surface 212S (the surface of the light projection window portion 411 in the present embodiment). Is disposed between the position of the opening and the opening position of the insertion / extraction opening OH.

As in the first finger omission inhibition unit 23, the configurations of the first to third aspects are preferably used for the second finger omission inhibition unit 25. When the second finger omission inhibition portion 25a configured by the ridge body is representatively described, the second finger omission inhibition portion 25a of this aspect has a predetermined height with respect to the back support surface 212S as shown in FIG. It is a projecting body that protrudes toward the inside of the accommodation space SS and intersects the insertion / extraction direction for inserting / removing a living body finger. For example, in the present embodiment, the second finger omission inhibiting portion 25a of this aspect is disposed at one end (end portion on the insertion / extraction opening OH side) of the hollow columnar body and has a predetermined length in the longitudinal direction (Y direction). This is a ridge that extends by a distance and that is higher than the back support surface 212S by a predetermined height toward the inside in the radial direction (−Z direction) of the hollow columnar body. In the present embodiment, on one opening end side (insertion / extraction opening OH side) of the hollow columnar body, one end (+ X direction end) of the back receiving portion 212 is radially inward (−Z direction) of the hollow columnar body. The second finger omission inhibition portion 25a of the protruding body having a predetermined width is formed by extending a predetermined length toward the front. Therefore, in this example, the second finger omission inhibition portion 25a of the ridge is arranged so as to be orthogonal to the insertion / extraction direction. The predetermined height (the length in the Z direction) is, for example, several mm, preferably about 1 to 2 mm from the viewpoint of effectively inhibiting finger removal. The predetermined width (the length in the X direction) is, for example, from sub mm to several mm, preferably from about 0.5 to 2 mm, from the viewpoint of effectively inhibiting finger removal. The predetermined length (the length in the Y direction) is, for example, about several millimeters to several tens of millimeters, and preferably about 5 to 10 millimeters from the viewpoint of effectively inhibiting finger removal. In the present embodiment, the predetermined length is the same as the length in the longitudinal direction (Y direction) of the abdomen receiving surface 211S so as to correspond to the first finger omission inhibiting portion 23a.

Such a biological information measuring device Dd includes the first finger drop-out inhibiting portion 23 (23a to 23c) on the side of the abdomen receiving surface 211S, and the insertion position of the irradiation light receiving unit 4 on the back receiving surface 212S side. A second finger omission inhibiting portion 25 is further disposed between the opening position of the opening OH. For this reason, the biological finger HF inserted into the accommodation space SS is difficult to be removed in the insertion / removal direction by the first and second finger removal inhibiting portions 23, 25, and the position of the biological finger HF inserted into the accommodation space SS is determined. More stable. Therefore, such a biological information measuring device Dd can further reduce the positional deviation of the finger with respect to the measurement position even with only the finger HF on which light is projected and received.

Further, in the above-described embodiment, the biological information measuring device D (Da to Dd) is configured such that the projection window portion 411 that irradiates the measurement light is configured in the back support portion 22 in order to measure predetermined biological information. Although the light receiving window portion 412 for receiving light is configured in the belly receiving portion 21, it may be reversed. That is, the light projection window 411 that irradiates the measurement light may be configured in the belly receiver 21, and the light receiving window 412 that receives the detection light may be configured in the back receiver 22. Therefore, the belly receiving surface 211S (back receiving surface 212S) is an irradiation surface (in the above example, the surface of the light projection window 411) irradiated with measurement light and a light receiving surface (in the above example, receiving light) that receives detection light. One measurement area surface of the window portion 412).

Further, in the biological information measuring device D (Da to Dd) of the above-described embodiment, the mounting main body 21 includes the abdomen receiving part 211, the back receiving part 212, the pair of first and second connecting parts 213-1, 213-2 and the hollow columnar body having an annular cross section, but is not limited thereto. The mounting main body 21 may be in any form that can be mounted on a biological finger. For example, the mounting main body portion 21 includes an abdomen receiving portion 211, a back receiving portion 212, and a connecting portion 213-1 (or connecting portion 213-2) that connects them at one end, and has a substantially C-shaped cross section. A hollow columnar body in which a part of the circumferential surface is open along the (substantially U-shaped) axial direction may be used. Further, for example, the mounting main body portion 21 may be a band formed of a pair of band-like members that extend from both side surfaces of the housing 11 of the main body portion 1 and are elongated along one direction. In the case where the mounting main body portion 21 is a band, the irradiation portion 41 and the light receiving portion 42 in the irradiation light receiving portion 4 are juxtaposed with the casing 11 of the main body portion 1.

This specification discloses various modes of technology as described above, and the main technologies are summarized below.

A biological information measurement device according to an aspect includes a mounting unit for mounting a finger of a living body, and irradiating the finger mounted on the mounting unit with measurement light, and detecting from within the finger based on the measurement light In order to use light for obtaining predetermined biological information, an irradiation light receiving unit for receiving light is provided, and the mounting unit is inserted through the insertion / extraction opening for inserting / removing the finger of the biological body, and the insertion / extraction opening A mounting body part that forms an accommodation space for accommodating the finger of the living body, and the irradiation light receiving part is disposed so as to receive the detection light by irradiating the accommodation space with measurement light, The mounting main body portion is disposed between the position where the irradiation light receiving portion is disposed and the opening position of the insertion / extraction opening, and prevents the living body finger inserted into the accommodation space from coming out of the accommodation space. A one-finger omission inhibitor is provided.

In such a biological information measuring apparatus, the first finger omission inhibiting portion is disposed between the position where the irradiation light receiving portion is disposed and the opening position of the insertion / extraction opening. For this reason, the finger inserted into the accommodation space is not easily removed by the first finger omission inhibiting portion, and the position of the finger inserted into the accommodation space becomes more stable. Therefore, such a biological information measuring device can reduce the positional deviation of the finger with respect to the measurement position even with only the finger that receives and projects light.

In another aspect, in the above-described biological information measuring device, the mounting main body further includes an abdomen receiving surface that faces the housing space and receives an abdomen of the finger of the living body inserted from the insertion / extraction opening, The one-finger drop-inhibiting part is disposed on the abdomen receiving surface side, and the first finger drop-inhibiting part protrudes toward the inside of the accommodation space at a predetermined height with respect to the abdomen receiving surface and inserts and removes the finger of the living body And at least one of a protrusion material intersecting with the insertion / extraction direction, a dissimilar material body formed of a material different from the abdominal bearing surface forming material forming the abdominal bearing surface, and a roughened rough surface body. .

Such a biological information measuring device can realize the first finger omission inhibition portion relatively easily with at least one of the protrusion, the foreign material, and the rough surface. And when the 1st finger omission inhibition part is constituted by a ridge body, the top part of the ridge body can be engaged with the depression of the first joint (distal interphalangeal joint) of the finger inserted into the accommodation space. Therefore, the finger inserted into the accommodation space is more difficult to be removed by the protrusion, and the position of the finger inserted into the accommodation space is more stable. In the case where the first finger omission inhibition portion is made of a different material body, for example, a material having a rough surface that is difficult to slip on the finger, or a finger is easily adsorbed as the different material body, unlike the abdominal bearing surface forming material. A material having a surface or the like can be used, and a finger inserted into the accommodation space is less likely to come off due to the different material body, and the position of the finger inserted into the accommodation space becomes more stable. In the case where the first finger omission inhibition portion is formed of a rough surface, the first finger omission inhibition portion can be formed of the same material as the material for forming the abdomen receiving surface, and the finger is less likely to slip. The finger is more difficult to remove due to the rough surface, and the position of the finger inserted into the accommodation space is more stable.

In addition, by providing a plurality of the protrusions, the foreign material body, and the rough body, the finger inserted into the accommodation space is more difficult to be removed by the first finger omission inhibiting portion, and the finger inserted into the accommodation space. The position of is more stable. Therefore, such a biological information measuring device can further reduce the positional deviation of the finger with respect to the measurement position even with only the finger that receives and projects light.

In another aspect, in the above-described biological information measuring device, the device main body further includes a back surface that faces the accommodation space and receives a back of the finger of the living body inserted from the insertion / extraction opening, It is arranged on the back receiving surface side between the position where the irradiation light receiving unit is disposed and the opening position of the insertion / extraction opening, and prevents the living body finger inserted into the accommodation space from coming out of the accommodation space. A second finger omission inhibition unit is further provided.

In such a biological information measuring device, in addition to the first finger omission prevention portion on the abdomen receiving surface side, the second information is provided on the back receiving surface side between the position where the irradiation light receiving portion is disposed and the opening position of the insertion / extraction opening. A finger omission inhibiting portion is further provided. For this reason, the finger inserted into the accommodation space is more difficult to be removed by the first and second finger omission inhibiting portions, and the position of the finger inserted into the accommodation space is further stabilized. Therefore, such a biological information measuring device can further reduce the positional deviation of the finger with respect to the measurement position even with only the finger that receives and projects light.

This application is based on Japanese Patent Application No. 2013-231658 filed on November 8, 2013, the contents of which are included in this application.

In order to express the present invention, the present invention has been properly and fully described through the embodiments with reference to the drawings. However, those skilled in the art can easily change and / or improve the above-described embodiments. It should be recognized that this is possible. Therefore, unless the modifications or improvements implemented by those skilled in the art are at a level that departs from the scope of the claims recited in the claims, the modifications or improvements are not covered by the claims. To be construed as inclusive.

ADVANTAGE OF THE INVENTION According to this invention, the biological information measuring device which measures predetermined | prescribed physiological information from a biological body can be provided.

Claims

A mounting part for mounting a biological finger;
Irradiation light reception for receiving measurement light to irradiate measurement light on the finger mounted on the mounting part and to use detection light from the finger based on the measurement light to obtain predetermined biological information With
The mounting portion includes a mounting main body portion that forms an insertion / extraction opening for inserting / removing a finger of the living body, and an accommodation space for storing the finger of the living body inserted from the insertion / extraction opening,
The irradiation light receiving unit is disposed so as to receive the detection light by irradiating the accommodation space with measurement light,
The mounting main body portion is disposed between the position where the irradiation light receiving portion is disposed and the opening position of the insertion / extraction opening, and prevents the living body finger inserted into the accommodation space from coming out of the accommodation space. A biological information measuring device comprising a one-finger omission inhibiting unit.
The mounting main body further includes an abdomen receiving surface that faces the accommodation space and receives an abdomen of the finger of the living body inserted from the insertion / extraction opening,
The first finger omission inhibition portion is disposed on the belly receiving surface side,
The first finger omission inhibiting portion forms a ridge that protrudes toward the inside of the accommodation space at a predetermined height with respect to the abdomen receiving surface and intersects an insertion / extraction direction for inserting / removing a finger of the living body, and forms the abdomen receiving surface. The biological information measuring device according to claim 1, wherein the biological information measuring device is at least one of a different material body made of a material different from the abdomen receiving surface forming material and a roughened rough surface body.
The apparatus main body is
Facing the accommodation space, further forming a back receiving surface for receiving the back of the finger of the living body inserted from the insertion / extraction opening,
It is arranged on the back support surface side between the position where the irradiation light receiving unit is disposed and the opening position of the insertion / extraction opening, and prevents the living body finger inserted into the accommodation space from coming out of the accommodation space The biological information measuring device according to claim 1, further comprising a second finger dropout inhibiting unit.