Support instrument and sensor kit

Abstract

To perform quantitative measurement with reproducibility by a capillary blood vessel re-filling time in a mounted state that enables appropriate compression using a support instrument for a finger with a variety of thicknesses and in a constant compressed state for a living body tissue.SOLUTION: A support instrument attached to a finger of a subject for supporting acquisition of biological information on the subject, includes: a support body disposed on a first side of the finger; a bag body disposed on a second side of the finger which is a side opposite to the first side; a fluid channel communicated with the inside of the bag body; and a size adjusting plate capable of being installed on a side where the finger is placed of the support body. The first side is one of a cushion side of the finger and a nail side of the finger, and the second side is the other of the cushion side of the finger and the nail side of the finger. A sensor for acquiring the biological information can be disposed between the finger and the support body, and between the finger and the bag body. When the size adjusting plate is stored in the support body, a finger storage space on the finger side of the bag body is made thin.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to an assistive tool that is worn on a finger of a subject to assist in acquisition of biological information of the subject by a sensor. The present invention also relates to a sensor kit that acquires biological information of the subject by using the assistive tool. [Background technology]

[0002] An example of acquiring biological information is the measurement of capillary refill time. Capillary refill time is considered a simple index for evaluating the presence or absence of shock, and is a method that is widely used in the field of emergency medicine, such as determining the need for infusion and triage (priority assessment when multiple injuries occur). Specifically, a medical professional applies pressure to the subject's biological tissue, such as the fingertip, and visually checks the change in color of the nails and skin after the pressure is released. If the original color returns within about two seconds, it is determined to be in a normal state. However, since this method involves applying pressure to biological tissue with the hand and visually checking the change in skin color, it lacks quantitativeness and is prone to errors caused by the person measuring.

[0003] Therefore, in Patent Document 1, a bioinformation acquisition system using a sensor is used to identify the capillary refill time of a subject. In the bioinformation acquisition system of Patent Document 1, a sensor is attached to the subject's finger by an assisting tool, and the pressure on the finger is changed by the bag of the assisting tool to acquire bioinformation from the sensor. In addition, the assisting tool of Patent Document 2 has a support and a bag, and the hinge part is bent with the first side of the subject's finger placed on the support, and the bag is placed on the second side of the finger. At this time, a light emitting device is placed on one of the pad side and the nail side of the finger, and a light receiving device is placed on the other. Then, the capillary refill time is identified from the change in the light receiving intensity of the light receiving device when the pressure by the bag is released. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6554459 [Patent Document 2] Patent No. 7066485 Summary of the Invention [Problem to be solved by the invention]

[0005] In order to perform reproducible quantitative measurements using the capillary refill time, it is necessary to keep the pressure on the biological tissue constant. However, if the height or width of the subject's finger is significantly different from the size of the assistive tool, the assistive tool cannot be worn in a state that allows appropriate pressure for measuring the capillary refill time. For example, if the subject's finger is too thin, a large gap will be created between the bag and the finger, resulting in insufficient pressure for measuring the capillary refill time. [Means for solving the problem]

[0006] One aspect for achieving the above-mentioned object is an assistive tool that is worn on a finger of a subject to assist in obtaining biometric information of the subject, the assistive tool comprising: a support body that is arranged on a first side of the finger; a bag body that is arranged on a second side of the finger opposite the first side; a fluid passage that communicates with the inside of the bag body; and a size adjustment plate that can be installed on the side of the support body on which the finger is worn, the first side being one of the pad side of the finger and the nail side of the finger, and the second side being the other of the pad side of the finger and the nail side of the finger, sensors for obtaining the biometric information can be arranged between the finger and the support body, and between the finger and the bag body, and when the size adjustment plate is accommodated in the support body, the finger accommodation space on the finger side of the bag body is thinned. Effect of the Invention

[0007] With this configuration, the assist tool can be used on fingers of various thicknesses to measure the capillary refill time. [Brief description of the drawings]

[0008] [Figure 1] FIG. 13 is a perspective view showing a state immediately before a finger is inserted into the support tool of the comparative example. [Diagram 2]FIG. 13 is a cross-sectional view showing a state in which a finger is inserted into the support tool of the comparative example and compressed air is supplied thereto. [Diagram 3] FIG. 13 is a cross-sectional view showing the state in which a slender finger is inserted into the support tool of the comparative example to close the lid. [Figure 4] FIG. 1 is a perspective view of an assistive device according to an embodiment of the present invention. [Diagram 5] FIG. 2 is a cross-sectional view of the support tool of Example 1 in an open state. [Figure 6] FIG. 2 is a cross-sectional view of the support tool of Example 1 in which a size adjustment plate is housed in a support body. [Figure 7] FIG. 2 is a perspective view of the support tool of Example 1 in which a size adjustment plate is housed in a support body. [Figure 8] FIG. 2 is a cross-sectional view showing the assistive tool of Example 1 with a slender finger inserted to close the lid. [Figure 9] FIG. 2 is a diagram showing a situation in which bioinformation is acquired using the support tool of the first embodiment. [Figure 10] FIG. 2 is a cross-sectional view showing the support tool of Example 1 with a finger inserted to close the lid. [Figure 11] FIG. 11 is a cross-sectional view showing the assistive device of Example 2 with a small finger inserted to close the lid. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Support tools for comparison> FIG. 1 shows a perspective view of a state immediately before inserting a finger F into a support tool 5 of a comparative example. A bioinformation detector for acquiring bioinformation of a subject is attached to the finger F. The bioinformation detector of this example is a so-called pulse photometer probe, and is formed by a light emitting device 21 and a light receiving device 23. In FIG. 1, the light emitting device 21 is attached to the nail N, and the light receiving device 23 is hidden under the finger F. The sensor device 2 has the light emitting device 21, a wiring 22 connected to the light emitting device 21, a light receiving device 23, and a wiring 24 connected to the light receiving device 23. The light emitting device 21 is an LED attached to the nail N. The light receiving device 23, which is hidden by the finger F, is attached to the side of the pad B of the finger. The light emitting device 21 emits light toward the light receiving device 23, and the transmitted light is received by the light receiving device 23, and a light receiving signal is sent to the wiring 24. The sensor device 2 is attached by taping around the finger F with tape (not shown).

[0010] The support tool 5 is attached to the subject's finger F and applies pressure to the finger F to support acquisition of the subject's biological information from the sensor device 2. The support tool 5 includes a support 51, a cover 52, and a hinge portion 53 that connects the support 51 and the cover 52. The support tool 5 in FIG. 1 is in a state in which the cover 52 is open, and is in a state before the finger F is placed in a pressure-applicable state inside the support 51. The support 51 has side walls 512 rising from both sides of a bottom wall 511, and a rising portion 513 rising from the tip side of the finger F. The upper end of the rising portion 513 is connected to the hinge portion 53.

[0011] In addition, two spacers 54 are provided on the rising portion 513. The spacer 54 is plate-shaped, with an upper side being an inclined upper surface 541 and a stopper surface 542 on the side of the finger F. The inclined upper surface 541 gradually descends from the hinge portion 53 toward the nail N, and a sufficient gap G is provided between the inclined upper surface 541 and the bag membrane 522 of the bag body 52a. Therefore, when the bag membrane 522 of the bag body 52a greatly expands downward, it can sufficiently press the nail N and the light-emitting device 21 without interfering with the spacer 54. In addition, because there is the gap G due to the inclined upper surface 541, the finger F can be placed at an appropriate position on the support tool 5 even for a subject whose nail N is growing.

[0012] The lid 52 is provided with a lid base 521, a bag membrane 522, and a band 523. Two bands 523 extend laterally from each side of the lid base 521. A part of the lid base 521 and the bag membrane 522 form a bag 52a. The inside of the bag 52a is connected to the inside of the tube 3. By bending the hinge portion 53 and placing the lid 52 over the support 51, the support tool 5 can place a biological information detector, which is a sensor for acquiring biological information, between the finger F and the support 51 and between the finger F and the bag 52a.

[0013] In Fig. 1, finger F is accommodated between side walls 512 with the pad B of the finger in contact with bottom wall 511 via tape. At this time, the tip of finger F abuts against stopper surface 542. When lid body 52 is rotated as shown by dotted arrow R1, hinge portion 53 bends and lid body 52 covers finger F. A hook-and-loop fastener (not shown) is provided on the upper surface of belt portion 523 and the outer surface of support body 51 in Fig. 1, and lid body 52 can be fixed to support body 51 by wrapping belt portion 523 around the outer surface of support body 51 with lid body 52 placed over finger F.

[0014] Fig. 2 shows a cross-sectional view of a conventional support tool 5 with a finger F inserted and the lid 52 closed. The support tool 5 is shown in cross section, with the finger F and the sensor tool 2, such as the light-emitting device 21, shown from the side. The light-emitting device 21 is attached to the nail N of the finger F, and the light-receiving device 23 is attached to the pad B side of the finger. In Fig. 2 as well, the tape taped around the finger F and the sensor tool 2 is omitted. Although not shown, in the state of Fig. 2, the band 523 is wrapped around the outer surface of the support 51, and the lid 52 is fixed to the support 51 by a hook-and-loop fastener (not shown).

[0015] In FIG. 2, the hinge portion 53 is bent and the lid 52 covers the top of the finger F. In the lid 52, a bag membrane 522 is attached around the bottom surface of the lid base 521 to form a bag 52a as shown by a dotted ellipse. A fluid passage 521a formed in the upper part of the lid base 521 communicates with the inside of the bag 52a, and the opposite side is connected to the tube 3. The finger F located under the bag 52a has the pad B of the finger in contact with the bottom wall 511 of the support 51. The light receiving device 23 is adapted to fit into a recess 511a provided in the bottom wall 511. In addition, due to the presence of the recess 511a, the finger F is pressed from above and the pad B of the finger fits into the recess 511a, making it difficult for the finger F to come off the support tool 5.

[0016] 2, a spacer 54 is provided on the support 51 of the support tool 5 to prevent the finger F from entering the side of the hinge part 53 on the fingertip side of the bag body 52a, and the tip of the finger F reaches the stopper surface 542 of the spacer 54. The light-emitting device 21 and the light-receiving device 23 are provided at a position substantially on the center line of the nail N, and in FIG. 2, the bag body center line C passes through the light-emitting device 21 and the light-receiving device 23. The tip of the finger F is pressed by the stopper surface 542 of the spacer 54, so that the center of the nail N passes substantially on the bag body center line C.

[0017] As described above, the presence of the spacer 54 makes it easier to align the center positions of the nail N and the bag body 52a. This allows for efficient compression and therefore stable measurement of capillary refill time. Although one spacer 54 may be used, if there are two spacers as in the embodiment, the spacer 54 comes into contact with two points on the tip of the finger F when the finger F is attached, providing high stability and a comfortable fit.

[0018] 2, compressed air is supplied from the tube 3 to the bag 52a as indicated by the arrow A, causing the bag membrane 522 to bulge downward. The bag center line C, which is the center line of the bag 52a, passes through the nail N. In this state, the pressure applied by the bag 52a is sufficient to act on the nail N, discharging blood from the capillaries. Therefore, the capillary refill time can be measured satisfactorily.

[0019] However, as shown in Fig. 2, a finger F is not necessarily of a thickness suitable for the support tool 5. Fig. 3 shows a cross-sectional view of a case where the support tool 5 is used on a thin finger Ft. As in Fig. 2, the support tool 5 is shown as a cross section, and the thin finger Ft and the sensor device 2 such as the light-emitting device 21 are shown from the side.

[0020] 3, compressed air is supplied to the bag body 52a from the tube 3 as indicated by the arrow A, causing the bag membrane 522 to bulge downward. However, because the finger Ft is thin, a gap Ga is generated between the bag membrane 522 of the bag body 52a and the light-emitting device 21. Therefore, pressure is not transmitted to the thin finger Ft or nail N, and appropriate pressure is not applied, making it impossible to measure the capillary refill time. EXAMPLES

[0021] FIG. 4 shows a perspective view of the support tool 1 according to the first embodiment of the present invention. The support tool 1 is attached to the subject's finger F to which the sensor device 2 is attached, as in the support tool 5 in the conventional example shown in FIGS. 1 and 2, and supports the acquisition of the subject's biological information from the sensor device 2. The support tool 1 includes a support 11, a cover 12, and a hinge portion 13 connecting the support 11 and the cover 12. The support tool 1 in FIG. 4 is in a state in which the cover 12 is open and before the finger F is placed in the support 11. The support 11 has side walls 112 rising from both sides of the bottom wall 111, and a rising portion 113 rising from the tip side of the position where the finger F is inserted so as to face the fingertip. Two spacers 14 are provided on the rising portion 113. The spacer 14 is plate-shaped, with an inclined upper surface 141 on the upper side and a stopper surface 142 on the side of the finger F. The sensor device 2 and the assistive tool 1 are combined and sold and distributed as a sensor kit.

[0022] The lid 12 in Fig. 4 is provided with a lid base 121, a bag membrane 122, and a strap 123. Two straps 123 extend laterally from each side of the lid base 121. A part of the lid base 121 and the bag membrane 122 form a bag 12a. The inside of the bag 12a is connected to the inside of the tube 3. In the support tool 1, a sensor bioinformation detector for acquiring bioinformation can be disposed between the finger F and the support 11, and between the finger F and the bag 12a.

[0023] In the support tool 1 in Fig. 4, the finger F is also accommodated between the side walls 112 with the pad B of the finger in contact with the bottom wall 111 via the tape. When the lid 12 is rotated as shown by the dotted arrow R1, the hinge portion 13 is bent and the lid 12 covers the finger F. A hook-and-loop fastener (not shown) is provided on the upper surface of the belt portion 123 and the outer surface of the support 11 in Fig. 4, and the lid 12 can be fixed to the support 51 by wrapping the belt portion 123 around the outer surface of the support 11 with the lid 12 covering the finger F. As a result, the light receiving device 23 is disposed between the finger F and the support 11, and the light emitting device 21 is disposed between the finger F and the bag body 12a, as a biological information detector for acquiring biological information.

[0024] The above points are the same as those of the support tool 5 of the comparative example, but the support tool 1 of Example 1 further includes a size adjustment plate 15 as shown in FIG. 4. The size adjustment plate 15 is connected to the support 11 at a position opposite to the hinge portion 13 via a connection portion 16. The connection portion 16 is narrow and thinner than the support 11 and the size adjustment plate 15, and is flexible and therefore bendable. FIGS. 5 and 6 show cross-sectional views of the support tool 1 of Example 1. FIG. 5 shows a cross-sectional view of the support tool 5 before the connection portion 16 is bent, and FIG. 6 shows a cross-sectional view of the support tool 5 after the connection portion 16 is bent.

[0025] In FIG. 5, the connection part 16 of the support tool 1 is not bent as in FIG. 4, and the connection part 16 extends linearly from the size adjustment plate 15 and is connected to the support 11. The hinge part 13 is also not bent, and the bag membrane 122 of the bag body 12a faces upward. In this state, the size adjustment plate 15 has a convex part 15a formed on the upper surface and a concave part 15b formed on the lower surface. In addition, a concave part 111a is provided on the bottom wall 111 of the support 11. When the support tool 1 is used for a thin finger Ft, the size adjustment plate 15 is rotated in the direction of the dotted arrow R2 to bend the connection part 16, and the convex part 15a of the size adjustment plate 15 is fitted into the concave part 111a of the bottom wall 111.

[0026] FIG. 6 shows the state where the convex portion 15a of the size adjustment plate 15 is fitted into the concave portion 111a. FIG. 6 shows a cross section of the support tool 1 with the size adjustment plate 15 superimposed on the support 11, and a side view of the thin finger Ft to which the light emitting device 21 and the like are attached. The size adjustment plate 15 is housed in the support 11 and the concave and convex portions of the support 11 are engaged. FIG. 6 shows the state immediately before the thin finger Ft is placed in the support 11. In this figure, the tape wrapped around the thin finger Ft is also omitted. Although it is hidden in FIG. 6), the size adjustment plate 15 avoids the lower part of the spacer 14 due to the spacer avoidance 151 shown in FIG. 4.

[0027] Fig. 7 is a view of the support tool 1 in the state of Fig. 6, seen from diagonally above. The connecting portion 16 is bent and the size adjustment plate 15 enters the inside of the support 11. The inside of the support 11 is raised by the size adjustment plate 15. The size adjustment plate 15 avoids the lower part of the spacer 14 by the spacer avoidance 151.

[0028] 6 and 7, after placing the thin finger Ft on the size adjustment plate 15, the lid 12 is rotated in the direction of the dotted arrow R1 to cover the thin finger Ft. Then, with the lid 12 covering the thin finger Ft, the band portion 123 is wrapped around the outer surface of the support 11 to fix the lid 12 to the support 11. In FIG. 6 and FIG. 7, the size adjustment plate 15 is in contact with the bottom of the support 11. However, even in a state where the lid 12 is not in contact, the thin finger Ft rests on the size adjustment plate 15 and presses it from above, so that the connection portion 16 is sufficiently bent, and the size adjustment plate 15 is folded and stored below the support 11.

[0029] FIG. 8 shows a cross-sectional view of the support tool 1 with the size adjustment plate 15 folded when used on a thin finger Ft. As in FIGS. 2 and 3, the support tool 1 is shown in cross section, and the thin finger Ft and the sensor device 2 such as the light-emitting device 21 are shown from the side. The bioinformation detector, which is a sensor, is formed by the light-emitting device 21 and the light-receiving device 23. In FIG. 8, compressed air is also supplied to the bag body 12a from the tube 3 as shown by the arrow A, and the bag membrane 122 bulges downward. The light-receiving device 23 is accommodated in the recess 15b of the size adjustment plate 15. When the size adjustment plate 15 is accommodated in the support body 11, the finger accommodation space formed on the support body 11 side of the bag membrane 122 in the bag body 12a becomes thinner in the support tool 1 with the lid body 12 closed.

[0030] As shown in FIG. 8, with the sensor instrument 2 and the support tool 1 attached to a thin finger Ft, bioinformation is acquired by the bioinformation acquisition device 6. FIG. 9 shows a situation in which bioinformation is acquired using the support tool 1 of the embodiment. The support tool 1, the sensor instrument 2 consisting of the light-emitting device 21, the wiring 22, the light-receiving device 23 and the wiring 24, and the tube 3 are as shown in FIG. 6. The tube 3 and the wirings 22 and 24 are connected to the bioinformation acquisition device 6. The bioinformation acquisition device 6 includes an information acquisition unit 61, a pressure adjustment unit 62, a switch 63, and an information output unit 64. The information acquisition unit 61, the pressure adjustment unit 62, the switch 63, and the information output unit 64 are connected to each other inside the bioinformation acquisition device 6.

[0031] The information acquisition unit 61 is connected to the wiring 22 and 24, and the light emitting device 21 emits light to obtain the amount of light received by the light receiving device 23. This makes it possible to calculate the capillary refill time. In addition, since the sensor instrument 2 functions as a pulse oximeter probe, the information acquisition unit 61 can also measure non-invasive arterial blood oxygen saturation (SpO 2 ) and other biometric information can be obtained.

[0032] The tube 3 is connected to the pressure adjustment unit 62, which supplies compressed air to the inside of the tube 3 and releases the supplied compressed air by opening an air valve (not shown). In addition, the switch 63 is used to start acquiring bioinformation, and the information output unit 64 outputs the bioinformation acquired by the bioinformation acquisition device 6 to the outside as information data, display information, or audio information.

[0033] 9, when the switch 63 is pressed to turn ON, compressed air is supplied from the pressure adjustment unit 62 to the tube 3. The supplied compressed air inflates the bag body 12a of the support tool 1 and compresses the nail N of the thin finger Ft. This causes blood to be pushed out of the capillaries near the nail N. Then, the light emitted from the light-emitting device 21 is received by the light-receiving device 23 without being absorbed much by the blood.

[0034] After a predetermined time has elapsed, the pressure adjustment unit 62 stops the supply of compressed air and releases the compressed air to reduce the pressure. This releases the pressure on the nail N from the bag body 12a of the support tool 1. Depending on the condition of the subject, blood may or may not return quickly to the capillaries near the nail N. The light emitted from the light emitting device 21 is absorbed differently depending on the state of blood return and is received by the light receiving device 23. The information acquiring unit 61 measures the capillary refill time based on the change in the amount of light received after the pressure adjustment unit 62 reduces the pressure. The information acquiring unit 61 also measures non-invasive arterial oxygen saturation (SpO 2 ) and other biometric information can be obtained.

[0035] The capillary refill time and other biological information measured by the information acquisition unit 61 are output from the information output unit 64. This output can be in the form of information data, display information, audio information, or the like.

[0036] As shown in Fig. 8, in the case of a thin finger Ft, the size adjustment plate 15 is folded to raise the bottom, and the assist tool 1 with a thinner finger accommodation space can be used. Therefore, no gap Ga is generated between the bag membrane 122 of the bag body 12a and the light emitting device 21, as indicated by the arrow W. Pressure is transmitted from the bag body 12a to the thin finger Ft or its nail N, and appropriate compression is performed, allowing the measurement of the capillary refill time.

[0037] On the other hand, the support tool 1 can also be used for fingers F of normal thickness. Fig. 10 shows a cross-sectional view of the support tool 1 of Example 1 with a finger F inserted and the lid 12 closed. When the support tool 1 is used for a finger F of normal thickness, the connection part 16 is not bent and the size adjustment plate 15 is not housed in the support 11. As a result, the bottom is not raised by the size adjustment plate 15, and an appropriate space for the finger F is secured inside the support tool 1 with the lid 12 closed.

[0038] When used for a finger F of normal thickness, the connecting portion 16 may be stretched as shown in FIG. 10, but the size adjustment plate 15 may be connected to the support 11 by a cuttable connecting portion 16, and the size adjustment plate 15 may be torn off at the connecting portion 16 and removed from the support 11. When used for a thin finger Ft, the size adjustment plate 15 may be torn off at the connecting portion 16 and separated from the support 11, and then housed within the support 11. The size adjustment plate 15 can be installed on the side of the support 11 where the finger is worn, whether or not it is connected by the connecting portion 16, and by installing it, the finger housing space can be made thinner. EXAMPLES

[0039] Fig. 11 shows a cross-sectional view of an assistive tool 4 according to a second embodiment of the present invention. The assistive tool 4 is worn on a small finger Fs of a subject to which a sensor device 2 is attached, and assists in acquiring biological information of the subject from the sensor device 2. The assistive tool 4 includes a support 41, a cover 42, and a hinge part 43 that connects the support 41 and the cover 42. The assistive tool 4 in Fig. 11 is in a state in which the cover 42 is closed and the small finger Fs is placed inside the support 41.

[0040] FIG. 11 shows a cross-sectional view of the support tool 4 with the size adjustment plate 45 folded when used on a small finger Fs. As in FIGS. 2, 3, 8, 10, etc., the support tool 1 is shown in cross section, and the small finger Fs and the sensor device 2 such as the light-emitting device 21 are shown in side view. The bioinformation detector, which is a sensor, is formed by the light-emitting device 21 and the light-receiving device 23. In FIG. 11, the support 41 of the support tool 4 is provided with a spacer 44 on the side of the hinge part 43 on the fingertip side of the bag body 42a. The spacer 44 has an inclined upper surface 441 and a stopper surface 442 as in the first embodiment. In FIG. 11, compressed air is supplied to the bag body 42a from the tube 3 as shown by the arrow A, and the bag membrane 422 is bulging downward. The light-receiving device 23 is accommodated in a recess 45b formed in the finger thickness adjustment part 451 of the size adjustment plate 45.

[0041] Unlike the support tool 1 of Example 1 shown in Figs. 4 to 10, the support tool 4 of Example 2 shown in Fig. 11 includes a fingertip adjustment part 452. In the size adjustment plate 45 of the support tool 4, a finger thickness adjustment part 451 is connected to the support body 41 at a connection part 46. In the size adjustment plate 45, the side opposite to the connection part 46 of the finger thickness adjustment part 451 is bent to form the fingertip adjustment part 452. The rest of the configuration is the same as that of the support tool 1 of Example 1.

[0042] As shown in FIG. 11, in the case of a small finger Fs, the finger thickness is raised by the finger thickness adjusting part 451 by folding the size adjusting plate 45 of the support tool 4, and further the fingertip adjusting part 452 comes into contact with the stopper surface 442 of the spacer 44. Then, the position of the fingertip can be shifted backward from the stopper surface 442 by the fingertip adjusting part 452. In addition, since the finger accommodation space becomes thinner by the bottom raising by the finger thickness adjusting part 451, no gap Ga is generated between the bag membrane 422 of the bag body 42a and the light emitting device 21 as indicated by the arrow W. Pressure is transmitted from the bag body 42a to the small finger Fs or its small nail Ns, and appropriate compression is performed, so that the capillary refill time can be measured.

[0043] In the size adjustment plate 45 of the second embodiment, the plate of the finger thickness adjustment portion 451 and the plate of the fingertip adjustment portion 452 are formed at a substantially right angle. However, the size adjustment plate 45 may be formed of a flexible material such as silicone rubber so that it bends when a small finger Fs is pressed against the size adjustment plate 45 to fulfill the roles of the finger thickness adjustment portion 451 and the fingertip adjustment portion 452.

[0044] In Example 1, the support tool 1 corresponding to the normal finger F and the thin finger Ft is shown, and in Example 2, the support tool 4 corresponding to the normal finger F and the small finger Fs is shown. However, if the subject's finger is thick, the fixed finger is pressed by the corner, and blood re-flow is hindered in the measurement of the capillary refill time. In addition, in a large finger, the bag body center line C may be shifted from the center of the nail. If the support tools 1 and 4 shown in Examples 1 and 2 are formed large, they can be made into support tools corresponding to subjects with thick or large fingers and subjects with normal fingers F. In addition, if the support tools 1 and 4 are formed slightly large, they can be made into support tools corresponding to normal fingers F to slightly thick fingers and slightly thin fingers.

[0045] Although the embodiments of the present invention have been described above in detail, the specific configuration is not limited to these embodiments, and the present invention includes design changes within the scope of the present invention. The above-mentioned embodiments can be combined by utilizing each other's technologies as long as there are no particular contradictions or problems in the purpose and configuration.

[0046] In the support tools 1 and 4 of the first and second embodiments, the support 11 and 41 are arranged on the pad side of the finger F, the thin finger Ft, and the small finger Fs, and the bag body 12a and 42a are arranged on the nail side. However, the reverse is also possible. In summary, the first side is one of the pad side of the finger and the nail side of the finger, and the second side is the other of the pad side of the finger and the nail side of the finger, and the support is arranged on the first side of the finger, and the bag body is arranged on the second side of the finger, which is opposite to the first side. [Explanation of symbols]

[0047] F finger Ft Thin Fingers Fs Small finger N Claw Ns Small nails B Finger pad C Bag center line G gap Ga Gap W Arrow R1 dotted arrow R2 dotted arrow A Arrow 1 Support equipment 11 Support 111 Bottom wall 111a Recess 112 Side wall 113 Start-up Department 12 Lid 12a Bag body 121 Lid base 121a Fluid passage 122 Pouch membrane 123 Belt 13 Hinge part 14 Spacer 141 Slanted top surface 142 Stopper surface 15 Size adjustment plate 15a Convex part 15b Recess 151 Spacer avoidance 16 Connection 2 Sensor equipment 21 Light emitting device 22 Wiring 23 Photodetector 24 Wiring 3 Tubes 4 Support equipment 41 Support 42 Lid 42a Bag body 421 Lid base 421a Fluid passage 422 Pouch membrane 43 Hinge part 44 Spacer 441 Slanted top surface 442 Stopper surface 45 Size adjustment plate 45b Recess 451 Finger thickness adjustment section 452 Fingertip adjustment section 46 Connection 5 Support equipment 51 Support 511 Bottom wall 511a Recess 512 Side wall 513 Start-up Department 52 Lid 52a Bag body 521 Lid base 521a Fluid passage 522 Pouch membrane 523 Belt 53 Hinge part 54 Spacer 541 Slanted top surface 542 Stopper surface 6 Biometric information acquisition device 61 Information Acquisition Department 62 Pressure adjustment section 63 Switch 64 Information Output Section

Claims

1. An assistive device that is worn on a finger of a subject and assists in obtaining biological information of the subject, a support disposed on a first side of the finger; a pouch disposed on a second side of the finger opposite the first side; a fluid passageway communicating with the interior of the bag; A size adjustment plate that can be installed on the side of the support where the finger is attached; Equipped with the first side is one of a pad side of the finger and a nail side of the finger; the second side being the other of the pad side of the finger and the nail side of the finger; a sensor for acquiring the biometric information can be disposed between the finger and the support body, and between the finger and the bag body; When the size adjustment plate is accommodated in the support, the finger accommodation space on the finger side of the bag body is made thinner. Support equipment.

2. The size adjustment plate is connected to the support by a severable connection. The support tool according to claim 1 .

3. the size adjustment plate is connected to the support by a flexible connection portion; The size adjustment plate is accommodated in the support by bending the connection portion. The support tool according to claim 1 .

4. When the size adjustment plate is accommodated in the support, the projections and recesses of the size adjustment plate engage with the support. The support tool according to any one of claims 1 to 3.

5. A sensor device for acquiring biological information of a subject; an assistive device that is attached to a finger of the subject so as to accommodate a sensor of the sensor device and assists in acquisition of biological information of the subject by the sensor device; A sensor kit comprising: The support tool is a support disposed on a first side of the finger; a pouch disposed on a second side of the finger opposite the first side; a fluid passageway communicating with the interior of the bag; A size adjustment plate that can be installed on the side of the support where the finger is attached; Equipped with the first side is one of a pad side of the finger and a nail side of the finger; the second side being the other of the pad side of the finger and the nail side of the finger; a sensor for acquiring the biometric information can be disposed between the finger and the support body, and between the finger and the bag body; When the size adjustment plate is accommodated in the support, the finger accommodation space on the finger side of the bag body is made thinner. Sensor kit.

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