JP6087114B2 - Non-invasive living body measurement device - Google Patents

Description

  The present invention relates to a non-invasive living body measuring apparatus, and more particularly, to a non-invasive living body measuring apparatus that measures living body information by imaging a finger of a subject.

  Conventionally, a non-invasive living body measuring device that measures living body information by imaging a finger of a subject is known (see, for example, Patent Document 1).

  Patent Document 1 discloses a non-invasive living body measurement apparatus including an imaging unit and a base on which a subject's finger is placed, and a cover that is provided with a light source and covers the finger placed on the base. Is disclosed. The cover is configured to rotate up and down around a rotation axis provided on the distal end side of the finger placed on the base. The subject places the second joint portion of the finger at the measurement position with the cover open, closes the cover, and covers the finger at the measurement position from above. In this state, a finger is imaged at the measurement position, and biological information such as blood hemoglobin concentration is measured based on the captured image.

Japanese Patent Laid-Open No. 2000-262496

  However, since the length of the finger of the subject varies from person to person, in the apparatus of Patent Document 1 in which the second joint portion of the finger is placed at the measurement position of the base, it is possible to measure even a subject with a long finger. For this, it is necessary to lengthen the device in the length direction of the fingers. On the other hand, there is also a demand for downsizing of the device, and it is desired that measurement can be performed even for subjects with long fingers without lengthening the device.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a non-invasive living body measurement apparatus that can measure even a subject with a long finger without enlarging the apparatus. Is to provide.

In order to achieve the above object, a noninvasive living body measurement apparatus according to a first aspect of the present invention is a noninvasive living body measurement apparatus that measures living body information based on an image of a subject's finger, and measures the subject's finger. A base to be placed at the position, an open state that is attached to the base and exposes the measurement position of the base to place the finger at the measurement position, and a finger at the measurement position to image the finger A closed state that covers, a cover portion that is movable, a light source portion that irradiates light on a finger placed at a measurement position, and a cover portion and a base. An imaging unit that obtains an image of a finger placed at the measurement position using light emitted from the light source unit, and is provided on the base, on the cover, or on the base and the cover It spans both and is in the measurement position when the cover is open. Acceptable through hole the leading edge of the location has been finger is formed, not have been made to discard With time, a noninvasive living body measuring device of non-disposable.

In the noninvasive living body measurement apparatus according to the first aspect of the present invention, as described above, the measurement is performed when the cover portion is in the open state across the base, the cover portion, or both the base and the cover portion. If the subject's finger is long by providing a through-hole part that can receive the tip of the finger placed at the position, the finger is inserted into the through-hole part when placing the subject's finger at the measurement position. The tip of the can be escaped. Thereby, without extending the device in the direction in which the fingers extend, the subject with a long finger and the subject with a standard finger length can perform measurement by placing the finger at the same measurement position. A subject with a long finger can also perform measurement without lengthening the apparatus.

In the noninvasive living body measurement device according to the first aspect, preferably, the through hole portion extends in the distal direction of the finger at the measurement position and extends over both the base and the cover portion. If comprised in this way, the attachment position of the cover part with respect to a base will be arrange | positioned in the height position substantially the same as the measurement position of a finger, and a through-hole part will be provided so that the attachment position of the cover part with respect to a base may be penetrated be able to. Thereby, for example, when providing a through-hole part only in the base, it is necessary to arrange the attachment position of the cover part with respect to the base at a position higher than the measurement position of the finger. Since the attachment position can be arranged at the same height position as the finger measurement position, an increase in the height of the apparatus can be suppressed. As a result, it is possible not only to suppress an increase in the lateral direction of the apparatus but also to reduce the size of the apparatus by suppressing the height dimension of the apparatus.

A noninvasive living body measurement apparatus according to a second aspect of the present invention is a noninvasive living body measurement apparatus that measures living body information based on an image of a subject's finger, and is a base for placing the subject's finger at a measurement position. It can be moved between the base and the open state that exposes the measurement position of the base to place the finger on the measurement position and the closed state that covers the finger at the measurement position to image the finger A cover unit, a light source unit that irradiates light on a finger arranged at the measurement position, and an imaging unit that obtains an image of the finger arranged at the measurement position using light emitted from the light source unit, A through hole that can receive the tip of a finger placed at the measurement position when the cover is open is formed on the base, the cover, or both the base and the cover. The through-hole is in the direction of the tip of the finger at the measurement position. The cover part is formed over both the base and the cover part, and the cover part is located on the tip side of the finger placed on the base, and is centered on a horizontal axis orthogonal to the finger. In the closed state of the cover portion, the cover portion side of the through hole portion is configured so that the inner diameter of the through hole portion increases toward the outer side of the cover portion in the distal direction of the finger at the measurement position. An inclined portion inclined upward is formed . According to this configuration, when the cover portion is in the closed state, the vertical length of the through hole portion is enlarged toward the cover portion side toward the tip of the finger by the inclined portion, so that the cover portion is closed. The inner diameter of the through-hole portion can be ensured even when it is rotated from the state around the axis to be in the open state. Thereby, even if a test subject has inserted the front-end | tip of a finger into a through-hole part, a cover part can be moved, without a cover part interfering with a finger.

In the noninvasive living body measurement apparatus according to the first or second aspect, preferably, the base includes a pair of side walls for placing the fingers at the measurement position with the fingers sandwiched therebetween, and the pair of side walls is In addition to extending along the fingers, the end of the fingers on the base side is formed such that the height decreases toward the base of the fingers. If comprised in this way, a finger | toe can be easily positioned to a measurement position by a pair of side wall part. Here, when a specific part of the finger (for example, the position of the second joint) is positioned at the measurement position, a subject with a long finger can have a margin in the length direction on both the tip side and the base side of the finger. When a short subject tries to position the same specific part at the measurement position, there is a possibility that the base of the finger interferes with the side wall and the specific part does not reach the measurement position. Therefore, in the present invention, the base side of the finger is formed at the end of the base of the finger so that the height decreases in the direction of the base of the finger. Even if the subject has a short finger, the finger can be placed at a deeper position. Thereby, even a test subject with a short finger can place an appropriate part at the measurement position and perform measurement. That is, the lower limit of the length of fingers that can be measured can be expanded, and a wider range of subjects can be handled with a single device.

The third non-invasive living body measuring device definitive with aspects of the invention is a noninvasive living body measuring device for measuring the biological information on the basis of the image of the finger of the subject, for placing a finger of the subject in the measurement position Moves between the base and an open state that is attached to the base and exposes the measurement position of the base to place the finger at the measurement position, and a closed state that covers the finger at the measurement position to image the finger A possible cover unit, a light source unit that irradiates light on a finger arranged at a measurement position, and an imaging unit that obtains an image of the finger arranged at the measurement position using light emitted from the light source unit. A through hole is formed on the base, on the cover, or across both the base and the cover, and can receive the tip of a finger placed at the measurement position when the cover is open. The base is placed in the measurement position with the fingers in between. Including a pair of non-light-transmitting side walls to be disposed on the base, and the pair of side walls is configured such that the distance between the pair of side walls decreases from the cover side to the base side. Yes . If comprised in this way, even in a subject with different thicknesses of fingers, the position of the fingers in the width direction can be ensured by simply moving the fingers to the base side until they contact the pair of side walls between the pair of side walls. Can be positioned. In addition, even when the thickness of the finger varies depending on the subject, the finger can be brought into contact with the side wall portions on both sides, so that light leakage can be prevented by eliminating a gap between the finger and the side wall portion.

In the noninvasive living body measurement apparatus according to the third aspect , preferably, the cover unit includes a light source unit, and the imaging unit is provided on the base so as to face the light source unit across the measurement position. The finger is configured to image the finger using the transmitted light, and the pair of side wall portions is configured such that the distance between the pair of side wall portions decreases from the light source unit side toward the imaging unit side. Yes. If comprised in this way, the permeation | transmission image of a finger can be obtained by the imaging part by the base side using the light irradiated from the light source part by the side of a cover part. At this time, since the gap between the finger and the pair of side wall portions can be eliminated between the finger and the imaging unit, external light (so-called stray light) other than light transmitted through the finger can be prevented from entering the imaging unit. Imaging.

  In the configuration in which the base includes a pair of side wall portions, preferably, the pair of side wall portions are formed on a placement portion for placing fingers placed on the base, and the base is a pair of The mounting part comprised so that the some mounting part from which the space | interval between side wall parts mutually differs can be selectively attached is included. With this configuration, it is not necessary to prepare a plurality of types of non-invasive living body measurement devices corresponding to the thickness of the finger of the subject, and only by exchanging the placement part formed with the pair of side wall parts, Measurements can be made corresponding to a wide range of subjects with different thicknesses.

  In this case, preferably, the mounting portion on which the pair of side wall portions is formed is formed of a non-translucent elastic member. If comprised in this way, since the whole mounting part containing a pair of side wall part can be formed with a non-translucent single material, the mounting part in which a pair of side wall part was formed is easily provided. Can do. In addition, by forming the mounting portion on which the pair of side wall portions are formed by an elastic member, the side wall portion can be brought into close contact with the finger when placing the finger, so that the finger and the side wall portion are more effectively used. The gap between the two can be eliminated.

In the noninvasive living body measurement device according to any one of the first to third aspects, preferably, a portion of the cover portion that comes into contact with the finger is provided with a light shielding portion made of a non-transparent elastic member. If comprised in this way, the clearance gap between a finger and a cover part can be eliminated by the light-shielding part, and the light leak from between a finger and a cover part can be prevented.

In this case, preferably, the cover portion has a light source portion, the light shielding portion has an inner surface disposed so as to sandwich the finger, and the light shielding portion in the width direction of the finger disposed at the measurement position. The interval between the inner side surfaces is formed so as to be smaller on the tip side than on the base side of the finger placed at the measurement position. If comprised in this way, the light leakage of the light source part in the side part of a finger | toe can be prevented with the inner surface of a light-shielding part. In addition, the distance between the inner side surfaces of the light-shielding part is made smaller on the tip side than the base side of the finger in accordance with the shape of the finger that tends to decrease in width toward the tip, so that the tip side to the tip side of the finger Can effectively prevent light leakage.
A noninvasive living body measurement apparatus according to a fourth aspect of the present invention is a noninvasive living body measurement apparatus that measures living body information based on an image of a subject's finger, and is a base for placing the subject's finger at a measurement position. It can be moved between the base and the open state that exposes the measurement position of the base to place the finger on the measurement position and the closed state that covers the finger at the measurement position to image the finger A cover unit, a light source unit that irradiates light on a finger arranged at the measurement position, and an imaging unit that obtains an image of the finger arranged at the measurement position using light emitted from the light source unit, A through hole that can receive the tip of a finger placed at the measurement position when the cover is open is formed on the base, the cover, or both the base and the cover. The through-hole is in the direction of the tip of the finger at the measurement position. In the closed state of the cover portion, the through-hole portion extends toward the outside of the cover portion in the distal direction of the finger at the measurement position. The inner diameter of the part is formed to be large .
A noninvasive living body measurement apparatus according to a fifth aspect of the present invention is a noninvasive living body measurement apparatus that measures living body information based on an image of a subject's finger, and is a base for placing the subject's finger at a measurement position. It can be moved between the base and the open state that exposes the measurement position of the base to place the finger on the measurement position and the closed state that covers the finger at the measurement position to image the finger A cover unit, a light source unit that irradiates light on a finger arranged at the measurement position, and an imaging unit that obtains an image of the finger arranged at the measurement position using light emitted from the light source unit, A through hole that can receive the tip of a finger placed at the measurement position when the cover is open is formed on the base, the cover, or both the base and the cover. The through-hole is in the direction of the tip of the finger at the measurement position. The cover part is formed over both the base and the cover part, and the cover part is located on the tip side of the finger placed on the base, and is centered on a horizontal axis orthogonal to the finger. The base is configured to be rotatable, and the base includes a top surface portion that supports the hand of the subject and is curved along the distal direction of the finger of the subject .

  According to the present invention, it is possible to measure even a subject with a long finger without lengthening the apparatus.

It is the front perspective view showing the appearance of the noninvasive living body measuring device by one embodiment of the present invention. It is the back perspective view showing the appearance of the noninvasive living body measuring device by one embodiment of the present invention. It is the longitudinal cross-sectional view which showed typically the internal structure of the noninvasive living body measuring device shown in FIG. It is a longitudinal cross-sectional view in the open state which opened the cover part of the noninvasive living body measuring device shown in FIG. It is the disassembled perspective view which expanded and showed the attachment structure of the mounting adapter of the noninvasive living body measuring device shown in FIG. It is a front perspective view of the noninvasive living body measuring device in the open state shown in FIG. It is a rear view of the noninvasive living body measuring device shown in FIG. It is a front view of the noninvasive living body measuring device in the open state shown in FIG. It is the figure which showed the light-shielding part of the noninvasive living body measuring device by one Embodiment of this invention from the lower surface side. It is the top view which showed the mounting adapter of the noninvasive living body measuring device by one Embodiment of this invention. It is a bottom view of the mounting adapter shown in FIG. It is sectional drawing of the mounting adapter along the 500-500 line | wire of FIG. It is a side view of the mounting adapter shown in FIG. It is the side view which showed the 1st modification of the mounting adapter. It is the side view which showed the 2nd modification of the mounting adapter.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

  First, with reference to FIGS. 1-13, the whole structure of the noninvasive living body measuring device by one Embodiment of this invention is demonstrated.

  As shown in FIGS. 1 and 2, a noninvasive living body measurement apparatus 100 (hereinafter referred to as “biological measurement apparatus 100”) according to an embodiment of the present invention includes a base 1 and a cover portion 2. As shown in FIGS. 3 and 4, the base 1 is provided with an imaging unit 3, and the cover unit 2 is provided with a light source unit 4, a display unit 5, and an operation unit 6.

  The biological measurement apparatus 100 irradiates light from the light source unit 4 of the cover unit 2 to the finger of the subject placed on the base 1, and transmits the transmitted light transmitted through the finger to the imaging unit 3 on the base 1 side. By receiving the light, a transmission image of the finger of the subject is taken. The biological measurement apparatus 100 is an apparatus that non-invasively measures biological information based on the obtained captured image of a finger. Specifically, the blood hemoglobin concentration of the subject is measured based on the width of the blood vessel (blood vessel diameter) determined from the image and the absorbance due to hemoglobin in the blood. In addition to the hemoglobin concentration, a venous oxygenation index (VOI) is calculated by analyzing the image data. This venous oxygenation index is a value related to the ratio of oxyhemoglobin and deoxyhemoglobin, which is calculated based on the fact that the light absorption characteristics of oxyhemoglobin and deoxyhemoglobin are different from each other.

  As shown in FIGS. 1 to 4, the base 1 includes an upper surface portion 11 that is gently curved so as to support the hand of the subject, and a placement adapter 40 for placing the subject's fingers at the measurement position P. It has the attaching part 12 (refer FIG. 5) attached so that attachment or detachment is possible, and the support part 13 which supports the cover part 2 so that rotation is possible. Moreover, the cover part 2 has the connection part 21 connected to the support part 13 of the base 1, and the upper surface 22 in which the display part 5 and the operation part 6 were provided. As shown in FIG. 1, in this embodiment, the finger is pointed in the Y1 direction on the support portion 13 side of the base 1 and the palm (base of the finger) is on the Y2 direction side opposite to the support portion 13. Placed in. Therefore, in the following, the Y1 direction is referred to as the tip side (or the back side) of the finger, and the Y2 direction is referred to as the base side (or the front side) of the finger. Further, the lateral direction (X direction) orthogonal to the Y direction (Y1 and Y2 directions) in which the fingers extend is referred to as the finger or device width direction.

  As shown in FIGS. 5 to 7, the support portion 13 and the connection portion 21 are located on the distal end side of the finger placed on the base 1 and are orthogonal to the direction in which the finger extends (Y direction) ( The hinge structure is configured to be rotatable around the rotation axis 14 in the X direction. A pair of connection portions 21 are disposed on both outer sides of the support portion 13, and engage with the support portion 13 via the rotation shaft 14. Thereby, as shown in FIGS. 3 and 4, the cover portion 2 is configured to be rotatable in the vertical direction (R direction) about the rotation shaft 14 with respect to the base 1. The cover unit 2 has an open state A (see FIGS. 4 and 6) in which the measurement position P of the base 1 is exposed to place the finger at the measurement position P, and a finger at the measurement position P to image the finger. It is configured to be movable in a closed state B (see FIGS. 1 to 3). Further, the hinge structure including the support portion 13 and the connection portion 21 is configured such that the rotation angle is limited by a predetermined upper limit angle. The open state A shown in FIGS. 4 and 6 is a state in which the cover portion 2 is opened to the maximum, and shows a positional relationship between the cover portion 2 and the base 1 at the upper limit angle.

  As shown in FIGS. 2 to 4, in the present embodiment, the base 1 is placed at the measurement position P of the base 1 at the center of the connection portion between the support portion 13 of the base 1 and the connection portion 21 of the cover portion 2. A through-hole portion 7 that can receive a finger is formed. As shown in FIG. 3 and FIG. 7, the through-hole portion 7 is provided across both the base 1 and the cover portion 2, and structurally, the lower concave portion 15 on the base 1 side, A through-hole portion 7 extending toward the distal end side (Y1 direction side) of the finger is constituted by the upper concave portion 23 on the cover portion 2 side.

  The through-hole part 7 is formed on the basis of the open state A where the cover part 2 is opened to the maximum. Specifically, the through-hole portion 7 has the base 1 in the open state A shown in FIG. 4 toward the extending direction (C direction) of fingers arranged at a measurement position P (described later) on the base 1 and It is formed so as to penetrate the cover part 2. Therefore, on the inner surface of the through hole portion 7 on the cover portion 2 side, the distance between the inner surfaces (inner dimensions in the vertical direction) increases toward the distal end side (Y1 direction) in the closed state B of FIG. An inclined portion 24 inclined upward (Z1 direction side) is formed. Since the upper surface portion 11 of the base 1 is gently curved, the tip of the finger placed on the upper surface portion 11 is arranged along the curvature of the upper surface portion 11. For this reason, the tangential direction along this curve is shown as the direction in which the fingers extend (C direction), distinguishing it from the Y1 direction on the tip side (back side).

  As shown in FIG. 3, the through hole 7 is formed between the inner surface at the end of the inclined portion 24 in the Y1 direction (front end side) from the distance D1 between the inner surfaces at the end of the inclined portion 24 in the Y2 direction (base side). The inner dimension in the vertical direction is enlarged upward by the inclined portion 24 toward the distal end side (Y1 direction) so as to be the distance D2. The inclined portion 24 is formed at an inclination angle such that the through hole portion 7 becomes a straight through hole in the C direction in the open state A shown in FIG. For this reason, the through hole portion 7 becomes a linear through hole in which the inclined portion 24 and the bottom surface 15a of the lower concave portion 15 are substantially parallel in the open state A. With such a configuration, the through-hole portion 7 prevents the fingers inserted into the through-hole portion 7 from coming into contact with the cover portion 2 regardless of whether the cover portion 2 is in the open state A or the closed state B. Is formed.

  Next, as shown in FIG. 3, the base 1 includes an imaging unit 3, a pair of detection switches 31 for detecting the finger of the subject, and a temperature sensor 32 that measures the temperature of the subject's hand in a non-contact manner. The control board 8 is included. The control board 8 includes a CPU, a memory, and the like, which are connected to each other by a bus. The CPU controls the entire apparatus by executing a program. The memory stores and holds the program and various data. The control board 8 is connected to each of the imaging unit 3, the detection switch 31, and the temperature sensor 32 by electric wires.

  The imaging unit 3 is configured by an imaging element such as a CMOS, for example, and is accommodated in the base 1. The imaging unit 3 is arranged with the imaging direction facing upward. Therefore, on the upper surface portion 11 of the base 1, the position directly above the imaging unit 3 is set as the measurement position P (imaging center). In order to secure the optical path of the imaging unit 3, the base 1 is provided with an opening at a position above (imaging direction) the imaging unit 3 and a transparent window member 16 (see FIG. 5). . Thereby, the imaging part 3 is comprised so that the belly side of the finger placed in the measurement position P on the base 1 may be imaged from below.

  As shown in FIG. 5, the attachment portion 12 is composed of a recess formed in a region corresponding to the measurement position P on the upper surface portion 11 of the base 1, and is configured so that the placement adapter 40 can be attached and detached. . The attachment portion 12 is formed in a substantially rectangular shape extending in the Y direction, and a window member 16, a rod 31 a described later of the detection switch 31, and a temperature sensor 32 are disposed on the bottom surface of the attachment portion 12. The measurement position P, the pair of detection switches 31, and the temperature sensor 32 are arranged in the attachment portion 12 so as to be linearly arranged in the Y direction at the center in the width direction (X direction).

  The mounting adapter 40 has an outer shape corresponding to the attachment portion 12 having a substantially rectangular shape, and is configured to be detachably attached to the base 1 by being fitted into the attachment portion 12. The mounting adapter 40 integrally includes an opening 43 provided corresponding to the measurement position P and a pair of side walls 42 provided to face each other with the measurement position P interposed therebetween. The pair of side wall portions 42 support the lower periphery of the side surface of the finger from both sides of the subject's finger, position the finger at the measurement position P, and prevent light leakage from the side of the finger. . The detailed structure of the mounting adapter 40 will be described later.

  The detection switch 31 is provided with respect to the measurement position P (a pair) on the tip side (Y1 direction) and the base side (Y2 direction) of the finger. The detection switch 31 can detect that the rod 31a has been pushed down by a finger, and can detect that the finger has been placed across the measurement position P in the Y direction by both detection switches 31. . The temperature sensor 32 is disposed at the Y2 direction side end of the mounting portion 12. The temperature sensor 32 is configured to measure the temperature of the finger of the subject placed above. The measured finger temperature is used for correcting measurement results (such as hemoglobin concentration) based on the captured image.

  Next, as shown in FIG. 3, the cover unit 2 includes a movable unit 51 provided with the light source unit 4, a display unit 5 (see FIG. 1), and an operation unit 6 (see FIG. 1). .

  The movable portion 51 is provided above the measurement position P on the lower surface side of the cover portion 2. As shown in FIGS. 6 and 8, a light source unit 4 and a light shielding unit 52 surrounding the light source unit 4 are provided on the lower surface side of the movable unit 51 facing the base 1. Moreover, the movable part 51 is held by the cover part 2 in a state of being movable relative to the cover part 2, and is urged toward the base 1 side by a spring member 53 as shown in FIG. For this reason, when the cover part 2 is in the closed state B with the finger placed at the measurement position P, the light shielding part 52 is in contact with the finger, and the movable part 51 compresses the spring member 53 while remaining in contact with the finger. While moving relative to the cover portion 2. Thereby, it is possible to reliably bring the light-shielding part 52 into contact with the upper surface side of the finger with respect to various subjects having different finger thicknesses (thicknesses in the height direction).

  As shown in FIGS. 3 and 8, the light source unit 4 is provided on the lower surface side of the movable unit 51 so as to face the imaging unit 3 on the base 1 side in the vertical direction. The light source unit 4 includes a plurality of LEDs, and is linearly arranged along the Y direction in which the fingers extend. The light source unit 4 irradiates illumination light from the cover unit 2 side toward the imaging unit 3 on the base 1 side, and the imaging unit 3 receives illumination light transmitted through a finger placed at the measurement position P.

  As shown in FIGS. 8 and 9, the light shielding portion 52 is provided so as to protrude from the movable portion 51 to the base 1 side, and has a circumferential inner side surface 52 a surrounding the light source portion 4 extending along the Y direction. A non-translucent elastic member. As the material of the light shielding part 52, for example, polyurethane rubber colored in opaque black, silicon rubber, thermoplastic elastomer or the like can be used. The light shielding unit 52 has a function of preventing the illumination light from the light source unit 4 from leaking to the outside by coming into contact with the finger of the subject. For this reason, the light-shielding part 52 is formed in the external shape corresponding to the shape of a finger, in order to improve adhesiveness with a finger.

  Specifically, the light-shielding part 52 is formed such that a circumferential inner side surface 52a sandwiches a finger between the inner side surfaces 52a in the width direction (X direction) while being in contact with the fingers. Further, it is formed to be smaller on the tip side (Y1 direction side) than the base side (Y2 direction side) of the finger arranged at the measurement position P. That is, the distance D4 on the other end side in contact with the tip side of the finger is smaller than the distance D3 on the one end side in contact with the base side of the finger. The light shielding portion 52 is formed so that the interval between the inner side surfaces 52a in the width direction (X direction) gradually decreases as it goes toward the tip side of the finger. The outer dimension of the light shielding part 52 in the width direction is substantially constant, and the thickness of the light shielding part 52 in the width direction increases toward the tip (Y1 direction) side. As shown in FIGS. 6 and 8, in the light-shielding part 52, the lower surface 52 b in contact with the finger is curved in an arc shape so that the center part in the width direction (X direction) is depressed. Thereby, it is possible to make the lower surface 52b of the light-shielding part 52 adhere along the shape of a finger.

  Further, as shown in FIGS. 3 and 6, the light shielding portion 52 is smoothly bent so that the contact surface (lower surface 52b) with the finger is depressed in the center in the Y direction when viewed from the side (X direction). It is formed to have a shape. This is because a human finger is gently bent when in a natural extended state, and in this natural extended state, deformation of the blood vessels of the finger is reduced, which is preferable for imaging. For this reason, the living body measuring apparatus 100 is formed so that the upper surface portion 11 of the base 1 and the placement adapter 40 are gently curved when viewed from the side so that the fingers are brought close to a natural extension state. Correspondingly, the light shielding part 52 is also formed to be curved.

  As shown in FIG. 1, the display unit 5 provided on the upper surface 22 of the cover unit 2 includes a liquid crystal display, for example, and displays measurement results (hemoglobin concentration, blood vessel diameter, venous oxygenation index (VOI), etc.). In addition, it is configured to be able to display guidance indicating the procedure for using the apparatus and an image captured by the imaging unit 3 (a blood vessel image of a finger). The operation unit 6 provided on the upper surface 22 is composed of a large operation button 6a and four small operation buttons 6b, and the operation button 6a instructing the start of measurement is closest to the front (Y1 direction side). It is formed in a large size. The other operation buttons 6b are used for various settings and display switching. As shown in FIG. 3, in the closed state B, the cover portion 2 is formed such that the upper surface 22 is inclined in a direction that becomes lower toward the front side (Y1 direction side). Thereby, the visibility of the display unit 5 and the operability of the operation unit 6 can be improved by the display unit 5 and the operation unit 6 being directed toward the head of the subject during use.

  In addition, each of the light source part 4, the display part 5, and the operation part 6 and the control board 8 are connected with the electric wire. These electric wires are arranged so as to pass through the connection portion of the support portion 13 of the base 1 and the connection portion 21 of the cover portion 2.

  Next, a detailed configuration of the mounting adapter 40 will be described.

  As shown in FIGS. 5 and 10, the mounting adapter 40 integrally includes a base portion 41 and a pair of side wall portions 42. The mounting adapter 40 is entirely made of a non-translucent elastic material. For this reason, a pair of side wall part 42 is also formed from the non-light-transmissive material. As a material of the mounting adapter 40, for example, opaque black colored polyurethane rubber, silicon rubber, thermoplastic elastomer, or the like can be used.

  The base portion 41 is formed in a substantially rectangular shape (rounded rectangle) corresponding to the mounting portion 12 of the base 1 described above, and is configured to be attached by being fitted into the mounting portion 12. The base portion 41 has an opening 43 for securing an imaging region at the measurement position P, a pair of through holes 44 for allowing the rod 31a of the detection switch 31 to escape, and a notch 45 for allowing the temperature sensor 32 to escape. Is formed. These through holes 44 and the notches 45 also function as positioning portions for the attachment portion 12 when the placement adapter 40 is attached. As shown in FIG. 11, a pair of groove portions 46 for suppressing deformation are formed along the outer periphery of the base portion 41 on the bottom surface side of the base portion 41.

  As shown in FIG. 10, the opening 43 has a rectangular shape along the extending direction of the fingers, and is formed so as to penetrate the base portion 41 vertically. As shown in FIGS. 11 and 12, the opening 43 is formed such that the opening width W <b> 2 on the bottom surface side of the base portion 41 is larger than the opening width W <b> 1 on the top surface side of the base portion 41. Thereby, as shown in FIG. 12, it is possible to suppress unnecessary light UL from being received by the imaging unit 3 due to reflection on the inner surface of the opening 43 during imaging.

  As shown in FIGS. 5 and 10, the pair of side wall portions 42 are formed so as to protrude upward (from the cover portion 2 side) from the upper surface side of the base portion 41. The pair of side wall portions 42 extends in the Y direction along the fingers and is formed so as to sandwich the opening 43 (that is, the measurement position P). Thereby, a pair of side wall part 42 has a function which arrange | positions a finger in the measurement position P so that a finger may be pinched | interposed.

  The pair of side wall portions 42 is formed so that the height thereof decreases toward the base side (Y2 direction) of the finger at the end portion on the base side (Y2 direction side) of the finger. That is, as shown in FIG. 13, at the ends of the pair of side wall portions 42, the height decreases from the protruding height H1 on the tip side to the protruding height H2 (<H1) on the base side of the finger. An inclined end inclined portion 42a is formed. The end inclined portion 42a is inclined in a smooth curved shape. Thereby, when positioning a specific part of the finger (for example, the position of the second joint) at the measurement position P, if the subject's finger is short, the base side of the finger is run on the end inclined portion 42a, The fingers can be placed at a deeper position. Thereby, even a test subject with a short finger can place an appropriate part at the measurement position P and perform measurement.

  Further, the pair of side wall portions 42 is configured such that the distance between the pair of side wall portions 42 becomes smaller from the cover portion 2 side (light source unit 4 side) toward the base 1 side (imaging unit 3 side). ing. Specifically, as shown in FIG. 12, the pair of side wall portions 42 has a minimum interval (opening) on the base 1 (imaging unit 3) side from a maximum interval D5 on the end portion on the cover unit 2 (light source unit 4) side. The inner inclined portion 42b is inclined so that the inner side surfaces approach each other until it reaches W1 (which matches the opening width of the upper end of the portion 43). Thereby, even when the thickness of the finger of the subject is different, the finger is in contact with the inner inclined portion 42b at the contact position corresponding to the thickness of each finger. It is also possible to place fingers without gaps. At this time, since the inner inclined portion 42b contacts both sides of the finger, it is possible to prevent the blood vessel image at the time of imaging from being affected by deforming the blood vessel on the ventral side of the finger.

  Note that the inner sloped portions 42b of the pair of side wall portions 42 can also be used, for example, for subjects whose fingers are narrower than the opening width W1 of the opening 43 or subjects whose fingers are thicker than the maximum distance D5 between the pair of side wall portions 42. I can't respond. Therefore, in the present embodiment, as shown in FIG. 5, a plurality of types of mounting adapters 40 are prepared in which the distance between the pair of side wall portions 42 is different from each other. It can be selectively attached to the attachment portion 12 of the table 1. The difference between the mounting adapters 40 is that the minimum distance (opening width of the opening 43) W1 between the pair of side walls 42, and the difference (inward inclination) between the maximum distance D5 and the minimum distance W1 between the pair of side walls 42. The inclination angle of the portion 42b). Further, the length and the inclination angle of the end inclined portion 42a at the Y2 direction side end portion of the pair of side wall portions 42 may be changed according to the difference in finger length.

  As shown in FIG. 10, a linear rib portion 47 extending in the width direction (X direction) is formed at a predetermined position (measurement position P) in the Y direction of the mounting adapter 40. The rib portion 47 is formed in a straight line so as to cross the base portion 41 and the pair of side wall portions 42 in the width direction (X direction). The rib portion 47 indicates the Y direction position of the measurement position P (imaging center), and serves as a mark for positioning in the Y direction when the subject places his / her finger. Therefore, by placing the finger on the placement adapter 40 so that the second joint of the finger is aligned with the rib portion 47, the position of the finger in the Y direction is positioned.

  Next, with reference to FIG. 1, FIG. 3, FIG. 4, FIG. 6, FIG. 12, and FIG. 13, the operation at the time of measurement of the biological measurement apparatus 100 according to the present embodiment will be described.

  First, as shown in FIGS. 4 and 6, the subject rotates the cover part 2 to bring the cover part 2 into an open state A in which the placement adapter 40 is exposed. Next, the subject places the finger (usually the middle finger (third finger) or the index finger (second finger)) to be measured on the placement adapter 40. At this time, the finger is disposed between the pair of side wall portions 42 so that the Y-direction position of the second joint of the finger matches the position of the rib portion 47 of the pair of side wall portions 42. This determines the position of the finger in the Y direction. In addition, as shown in FIG. 4, the subject with a long finger can insert the tip of the finger into the through-hole portion 7 with the position of the second joint aligned, thereby allowing the tip of the finger to escape. On the other hand, as shown in FIG. 13, the subject with short fingers puts the fingers so that the base of the fingers rides on the end inclined portions 42 a at the Y2 direction side end portions of the pair of side wall portions 42. The two joints can be aligned with the rib portion 47. Also, as shown in FIG. 12, when both side surfaces of the fingers come into contact with the inner inclined portions 42 b of the pair of side wall portions 42, the fingers are held and the position of the fingers in the width direction (X direction) is determined. At this time, as shown in FIG. 4, it is detected that the rods 31 a of the pair of detection switches 31 are pressed by the fingers, and the fingers are placed.

  When the finger is placed on the placement adapter 40, the subject closes the cover part 2 and changes the cover part 2 from the open state A to the closed state B (see FIGS. 1 and 3). Covered by the cover 2. At this time, the light-shielding part 52 (lower surface 52b) of the movable part 51 is in contact with the upper surface side of the finger, and the movable part 51 moves so as to enter the inside of the cover part 2. The light shielding unit 52 shields light without a gap.

  Thereafter, as shown in FIG. 1, the subject presses the operation button 6 a for starting measurement on the upper surface 22 of the cover portion 2. When the operation button 6a is pressed, illumination light is emitted from the light source unit 4, and light transmitted through the finger within the imaging region centering on the second joint of the finger at the measurement position P is received by the imaging unit 3. Thus, a captured image of the finger is acquired. Further, the temperature of the finger of the subject is acquired by the temperature sensor 32, and correction when calculating the measurement result is performed. When the measurement is completed, a measurement result, a captured blood vessel image, and the like are displayed on the display unit 5.

  As described above, the living body measurement apparatus 100 according to the present embodiment can noninvasively measure the blood hemoglobin concentration of the subject with a simple operation of placing a finger on the placement adapter 40 and starting the measurement. Therefore, as an application example of the living body measurement apparatus 100 according to the present embodiment, for example, it can be suitably used for monitoring the hemoglobin concentration for an athlete (subject) in the sports field. That is, the hemoglobin concentration serves as an index of oxygen carrying capacity, and is strongly related to the endurance and performance of the athlete. Therefore, the measurement result of the biological measuring device 100 can be used for the condition management and condition maintenance of the athlete.

  In this case, since measurement is performed on the subject after training, sweat and dirt are likely to adhere to portions such as the placement adapter 40 and the light shielding portion 52 that come into contact with fingers. In the present embodiment, since the biological measurement apparatus 100 is configured by the base 1 and the cover portion 2 that can be opened and closed, the maintenance performance of the biological measurement apparatus 100 can be improved. In other words, by opening the cover portion 2 to the open state A, it is possible to easily clean the placement adapter 40, the light shielding portion 52, etc., and replace the placement adapter 40.

  In the present embodiment, as described above, by providing the through-hole portion 7 that can receive the tip of the finger arranged at the measurement position P across both the base 1 and the cover portion 2, When a finger is long, when the finger is placed at the measurement position P, the finger can be inserted into the through-hole portion 7 to escape the tip of the finger. Thereby, even if it does not lengthen an apparatus in the direction where a finger extends, a test subject with a long finger and a test subject with a standard finger length can perform measurement by placing the finger at the same measurement position P. Measurement can be performed even for a subject with a long finger without enlarging the biological measurement apparatus 100.

  In the present embodiment, as described above, the through-hole portion 7 is formed so as to extend in the distal direction (Y1 direction) of the finger at the measurement position P and straddle both the base 1 and the cover portion 2. To do. Thereby, the attachment position (support part 13 and connection part 21) of the cover part 2 with respect to the base 1 is arrange | positioned in the height position substantially the same as the measurement position P of a finger, and the attachment position of the base 1 and the cover part 2 The through-hole part 7 can be provided so that it may penetrate. Thus, for example, when the through hole 7 is provided only in the base 1, the cover 2 needs to be attached to the base 1 at a position higher than the measurement position P of the finger. Since the attachment position of the cover part 2 with respect to the base 1 can be arranged at a height position substantially the same as the measurement position P of the finger, an increase in the height dimension of the biological measurement apparatus 100 can be suppressed. As a result, not only the lateral lengthening of the biological measurement apparatus 100 can be suppressed, but also the height dimension of the biological measurement apparatus 100 can be suppressed and the biological measurement apparatus 100 can be downsized.

  In the present embodiment, as described above, the cover portion 2 is configured to be rotatable around the rotation shaft 14, and the inner surface on the cover portion 2 side of the through hole portion 7 is connected to the inner surface on the cover portion 2 side. An inclined portion 24 that is inclined upward is formed so that the distance from the inner surface on the base 1 side increases toward the tip of the finger at the measurement position P. Thereby, when the cover part 2 is in the closed state B, the length in the vertical direction of the through hole part 7 is enlarged toward the cover part 2 side by the inclined part 24 toward the tip of the finger. Also, the inner diameter of the through-hole portion 7 can be secured even when the closed state B is rotated around the axis to be in the open state A. Thereby, even if a test subject has inserted the front-end | tip of a finger into the through-hole part 7, the cover part 2 can be moved without the cover part 2 interfering with a finger.

  Further, in the present embodiment, as described above, the pair of side wall portions 42 of the placement adapter 40 are formed so as to extend along the fingers, and at the end of the side walls of the fingers on the base side of the fingers, An end inclined portion 42a having a height that decreases toward the base side is formed. Thereby, the finger can be easily positioned to the measurement position P by the pair of side wall portions 42. Further, even if the subject has a short finger, the finger can be placed at a deeper side (Y1 direction side) so that the base side of the finger rides on the end inclined portion 42a at the end of the side wall portion 42. Thereby, even a test subject with a short finger can place the second joint at the measurement position P and perform measurement. That is, the lower limit of the length of fingers that can be measured can be expanded, and a single living body measuring apparatus 100 can handle a wider range of subjects.

  In the present embodiment, as described above, the inner inclined portions that are inclined to the pair of side wall portions 42 so that the distance between the pair of side wall portions 42 decreases from the cover portion 2 side toward the base 1 side. 42b is formed. As a result, even in a test subject having different finger thicknesses, the finger width direction is simply moved to the base 1 side until the pair of side wall portions 42 comes into contact with the pair of side wall portions 42 (inner inclined portions 42b). The position in the (X direction) can be reliably positioned. Further, even when the thickness of the finger varies depending on the subject, the finger can be brought into contact with the side wall portions 42 (inner inclined portions 42b) on both sides, so that light leakage can be prevented by eliminating the gap between the finger and the side wall portion 42. it can.

  Moreover, in this embodiment, while providing the light source part 4 in the cover part 2 as mentioned above, the imaging part 3 is provided in the base 1 so as to oppose the light source part 4 on both sides of the measurement position P, and a finger is provided. The finger is imaged using the transmitted light. The pair of side wall portions 42 are formed with inner inclined portions 42b that are inclined so that the distance between the pair of side wall portions 42 decreases from the light source unit 4 side toward the imaging unit 3 side. Thereby, the transmission image of a finger can be obtained by the imaging unit 3 on the base 1 side using the light emitted from the light source unit 4 on the cover unit 2 side. At this time, since the gap between the finger and the pair of side wall portions 42 (inner inclined portion 42b) can be eliminated between the finger and the imaging unit 3, external light (so-called stray light) other than light transmitted through the finger can be removed. Imaging can be performed while suppressing incidence on the imaging unit 3.

  Moreover, in this embodiment, a pair of side wall part 42 is formed in the mounting adapter 40 as mentioned above. The minimum distance (opening width of the opening 43) W1 between the pair of side walls 42, the difference between the maximum distance D5 and the minimum distance W1 of the pair of side walls 42 (inclination angle of the inner inclined portion 42b), and the like. A mounting portion 12 configured to selectively mount a plurality of different mounting adapters 40 is provided on the base 1. Thereby, it can be made measurable corresponding to a wide range of subjects having different finger thicknesses by only replacing the mounting adapter 40 having the pair of side wall portions 42 formed thereon.

  In the present embodiment, as described above, the mounting adapter 40 in which the pair of side wall portions 42 is formed is formed of a non-light-transmitting elastic member. Thereby, since the whole mounting adapter 40 including the pair of side wall portions 42 can be formed of a non-translucent single material, the mounting adapter 40 formed with the pair of side wall portions 42 can be easily provided. Can do. Moreover, since the placement adapter 40 in which the pair of side wall portions 42 is formed is formed of an elastic member, the side wall portions 42 can be brought into close contact with each other when the fingers are placed. A gap between the portion 42 can be eliminated.

  In the present embodiment, as described above, the light shielding portion 52 made of a non-translucent elastic member is provided in the portion of the cover portion 2 that contacts the finger. Thereby, the light shielding part 52 eliminates the gap between the finger and the cover part 2, and can prevent light leakage from between the finger and the cover part 2.

  Further, in the present embodiment, the interval between the inner side surfaces 52a of the light shielding portion 52 in the finger width direction (X direction) is more distal than the base side (Y2 direction side) of the finger arranged at the measurement position P (Y1). (Direction side) is formed so as to be small. If comprised in this way, the light leakage of the light source part 4 in the side part of a finger | toe can be prevented with the inner surface 52a of the light-shielding part 52. FIG. Further, in accordance with the shape of a finger whose width tends to decrease toward the tip (Y1 direction), the distance between the inner side surfaces 52a of the light shielding portion 52 is made smaller on the tip side than the base side of the finger, thereby Light leakage can be effectively prevented from the base side to the tip side.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, an example in which the cover portion is configured to be pivotable up and down by the hinge structure is shown, but the present invention is not limited to this. For example, the cover portion may be configured to be movable up and down, and may be movable between an open state at the raised position and a closed state at the lowered position. Moreover, you may comprise a cover part so that a cover part may slide to the front-back direction (Y direction) to the imaging position of a near side, and the mounting position of a back side.

  Moreover, although the example which formed the through-hole part so that it might straddle a base and a cover part was shown in the said embodiment, this invention is not limited to this. In the present invention, the through hole portion may be formed only on the base side. In this case, it is not necessary to form an inclined part in the through hole. Moreover, you may form a through-hole part only in the cover part side.

  In the above embodiment, an example in which the imaging unit is provided on the base and the light source unit is provided on the cover has been described, but the present invention is not limited thereto. In the present invention, a light source may be provided on the base, and an imaging unit may be provided on the cover part.

  Moreover, in the said embodiment, although the imaging part showed the example which images a finger using the transmitted light which was irradiated from the light source part and permeate | transmitted the finger, this invention is not limited to this. In the present invention, the imaging unit may image the finger using the reflected light that is emitted from the light source unit and reflected by the finger. In this case, both the light source unit and the imaging unit may be provided on either the base or the cover unit.

  Moreover, in the said embodiment, although the example which comprised the biometric device so that the mounting adapter in which a pair of side wall part was formed could be attached to the attaching part of a base was shown, this invention is not limited to this. . In this invention, you may provide a pair of side wall part directly in a base, without providing a mounting adapter.

  Moreover, in the said embodiment, although the example which provided the edge part inclination part 42a inclined in the shape of a smooth curve in the Y2 direction side (finger base side) edge part of a pair of side wall part 42 was shown, this invention is shown. It is not limited to this. For example, as in the first modification of the mounting adapter shown in FIG. 14, the end inclined portions 142a of the pair of side wall portions 142 of the mounting adapter 140 may be inclined linearly. Moreover, you may change the length of the Y direction of the edge part inclination part 142a like the edge part inclination part 142a of this 1st modification. Moreover, it is good also considering the edge part inclination part 242a of a pair of side wall part 242 of the mounting adapter 240 as an arcuate curved surface like the 2nd modification of the mounting adapter shown in FIG. In addition, for example, the end inclined portion may be formed in a step shape so that the height decreases stepwise toward the base side of the finger.

  Moreover, although the example which provided the non-light-transmissive light-shielding part in the part which contacts the finger of a cover part was shown in the said embodiment, this invention is not limited to this. In the present invention, the cover portion may be formed so as to shield light by completely covering the finger at the measurement position without providing the light shield portion in the cover portion.

  Moreover, in the said embodiment, although the whole mounting adapter containing a pair of side wall part and the light-shielding part were formed with the non-light-transmissive elastic member, this invention is not limited to this. In this invention, you may form a side wall part, a mounting adapter, and a light-shielding part with materials other than an elastic member. Moreover, it is not necessary to form the whole mounting adapter with a non-light-transmitting material.

  Moreover, although the example which provided the imaging part which consists of imaging devices, such as CMOS, and the light source part which consists of LED was shown in the said embodiment, this invention is not limited to this. The imaging unit may use imaging means other than the CMOS imaging device, and the light source unit may use a light source other than the LED.

DESCRIPTION OF SYMBOLS 1 Base 2 Cover part 3 Imaging part 4 Light source part 7 Through-hole part 12 Attachment part 14 Rotating shaft 24 Inclination part 40,140,240 Placement adapter 42,142,242 Side wall part 52 Light-shielding part 52a Inner side surface 100 Biometric measurement Device A Open state B Closed state P Measurement position

Claims (12)

A non-invasive living body measurement device that measures living body information based on an image of a subject's finger,
A base for placing the subject's fingers at the measurement position;
An open state attached to the base and exposing the measurement position of the base to place the finger at the measurement position, and a closed state covering the finger at the measurement position to image the finger A movable cover,
A light source unit that is integrally provided on one of the cover unit and the base and that irradiates light on the finger disposed at the measurement position;
An imaging unit which is provided integrally with the other of the cover unit and the base and obtains an image of a finger placed at the measurement position using light emitted from the light source unit;
A penetrating hole that can receive the tip of a finger placed in the measurement position when the cover is in the open state, straddling the base, the cover, or both the base and the cover A non-disposable, non-invasive living body measuring device that has a hole and is not designed to be discarded once used .   The non-invasive living body measurement device according to claim 1, wherein the through hole portion extends in a distal direction of a finger at the measurement position and extends over both the base and the cover portion. A non-invasive living body measurement device that measures living body information based on an image of a subject's finger,
A base for placing the subject's fingers at the measurement position;
An open state attached to the base and exposing the measurement position of the base to place the finger at the measurement position, and a closed state covering the finger at the measurement position to image the finger A movable cover,
A light source unit for irradiating light to fingers placed at the measurement position;
An imaging unit that obtains an image of a finger placed at the measurement position using light emitted from the light source unit; and
A penetrating hole that can receive the tip of a finger placed in the measurement position when the cover is in the open state, straddling the base, the cover, or both the base and the cover A hole is formed,
The through-hole portion extends in the distal direction of the finger at the measurement position and is formed across both the base and the cover portion,
The cover portion is configured to be rotatable about a horizontal axis orthogonal to the finger, which is positioned on a distal end side of the finger placed on the base,
In the closed state of the cover portion, the through-hole portion faces upward toward the cover portion side so that the inner diameter of the through-hole portion increases toward the outside of the cover portion in the distal direction of the finger at the measurement position. A non-invasive living body measuring device in which an inclined portion inclined to the surface is formed. The base includes a pair of side walls for placing the fingers at the measurement position with the fingers sandwiched therebetween,
The pair of side wall portions extend along the fingers, and are formed so that the height of the pair of side wall portions decreases toward the base side direction of the fingers at an end portion on the base side of the fingers. The noninvasive living body measuring apparatus according to any one of the above. A non-invasive living body measurement device that measures living body information based on an image of a subject's finger,
A base for placing the subject's fingers at the measurement position;
An open state attached to the base and exposing the measurement position of the base to place the finger at the measurement position, and a closed state covering the finger at the measurement position to image the finger A movable cover,
A light source unit for irradiating light to fingers placed at the measurement position;
An imaging unit that obtains an image of a finger placed at the measurement position using light emitted from the light source unit; and
A penetrating hole that can receive the tip of a finger placed in the measurement position when the cover is in the open state, straddling the base, the cover, or both the base and the cover A hole is formed,
The base includes a pair of non-translucent side walls for placing the fingers at the measurement position with the fingers sandwiched therebetween,
The pair of side wall portions is a noninvasive living body measurement device configured such that a distance between the pair of side wall portions decreases from the cover portion side toward the base side. The cover part has the light source part,
The imaging unit is provided on the base so as to face the light source unit across the measurement position, and is configured to image a finger using light transmitted through the finger,
The non-invasive living body measuring apparatus according to claim 5, wherein the pair of side wall portions is configured such that a distance between the pair of side wall portions decreases from the light source unit side toward the imaging unit side. . The pair of side wall portions are formed on a placement portion for placing fingers placed on the base,
The non-invasive living body measurement according to claim 5 or 6, wherein the base includes an attachment portion configured to be capable of selectively attaching a plurality of the above-described placement portions having different intervals between the pair of side wall portions. apparatus.   The noninvasive living body measurement device according to claim 7, wherein the placement portion on which the pair of side wall portions is formed is formed of a non-translucent elastic member.   The noninvasive living body measuring device according to any one of claims 1 to 8, wherein a light shielding portion made of a non-translucent elastic member is provided at a portion of the cover portion that comes into contact with a finger. The cover part has the light source part,
The light-shielding part has an inner surface disposed so as to sandwich a finger therebetween, and an interval between the inner surfaces of the light-shielding part in the width direction of the finger disposed at the measurement position is disposed at the measurement position. The noninvasive living body measurement device according to claim 9, wherein the noninvasive living body measurement device is formed so as to be smaller on a distal end side than on a base side of a finger. A non-invasive living body measurement device that measures living body information based on an image of a subject's finger,
A base for placing the subject's fingers at the measurement position;
An open state attached to the base and exposing the measurement position of the base to place the finger at the measurement position, and a closed state covering the finger at the measurement position to image the finger A movable cover,
A light source unit for irradiating light to fingers placed at the measurement position;
An imaging unit that obtains an image of a finger placed at the measurement position using light emitted from the light source unit; and
A penetrating hole that can receive the tip of a finger placed in the measurement position when the cover is in the open state, straddling the base, the cover, or both the base and the cover A hole is formed,
The through-hole portion extends in the distal direction of the finger at the measurement position and is formed across both the base and the cover portion,
In the closed state of the cover portion, the through-hole portion is formed so that the inner diameter of the through-hole portion increases toward the outside of the cover portion in the distal direction of the finger at the measurement position. Measuring device. A non-invasive living body measurement device that measures living body information based on an image of a subject's finger,
A base for placing the subject's fingers at the measurement position;
An open state attached to the base and exposing the measurement position of the base to place the finger at the measurement position, and a closed state covering the finger at the measurement position to image the finger A movable cover,
A light source unit for irradiating light to fingers placed at the measurement position;
An imaging unit that obtains an image of a finger placed at the measurement position using light emitted from the light source unit; and
A penetrating hole that can receive the tip of a finger placed in the measurement position when the cover is in the open state, straddling the base, the cover, or both the base and the cover A hole is formed,
The through-hole portion extends in the distal direction of the finger at the measurement position and is formed across both the base and the cover portion,
The cover portion is configured to be rotatable about a horizontal axis orthogonal to the finger, which is positioned on a distal end side of the finger placed on the base,
The said base is a noninvasive living body measuring device which supports a test subject's hand and includes the upper surface part curved along the front-end | tip direction of a test subject's finger.

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