Measurement device

Abstract

To provide a measurement device capable of preventing intrusion of foreign matter into the device through an insertion port.SOLUTION: A measurement device for measuring a sample using a sheet-like sensor is provided, the measurement device comprising a housing, a guide surface, corresponding to one end face of the housing, surrounded by a peripheral edge, and an insertion port formed on the guide surface at a position away from the peripheral edge in any direction and designed to allow the sensor to be inserted, where the guide surface is continuously recessed from the peripheral edge toward the insertion port.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present case relates to a measuring device having an insertion port in a housing into which a measurement sensor is inserted. [Background technology]

[0002] Patent Document 1 discloses a square-shaped specimen measuring device with a sensor insertion port on the side. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2014-526705 Summary of the Invention [Problem to be solved by the invention]

[0004] If the periphery of the insertion opening is flat, when a foreign object adheres to the edge of the insertion opening, the foreign object may get into the inside of the measuring device when the sensor is inserted. [Means for solving the problem]

[0005] One aspect of the present disclosure is a measuring device that measures a sample using a sheet-like sensor, comprising a housing, a guide surface which is one end face of the housing and is surrounded by a periphery, and an insertion port formed on the guide surface at a position away from either periphery and through which the sensor is inserted, the guide surface being continuously recessed from the periphery towards the insertion port. Effect of the Invention

[0006] According to the embodiment of the present disclosure, since the insertion port is located at the back of the recessed guide surface, even if a foreign object adheres to the periphery of the guide surface, the foreign object is unlikely to adhere to the edge of the insertion port. In addition, since the guide surface is continuously recessed from the periphery, it serves as a guide when inserting the sensor into the insertion port. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a perspective view of the measuring device according to the first embodiment. [Diagram 2] FIG. 2 is a front view of the measuring device of FIG. 1. [Diagram 3] 2 is a cross-sectional view showing a schematic internal view of the measuring device of FIG. 1 placed on a flat surface. [Figure 4] FIG. 2 is a plan view of a sensor inserted into a meter of the present disclosure. [Diagram 5] 5 is a perspective view showing a state in which the sensor of FIG. 4 is inserted into the measuring device of FIG. 1. [Figure 6] FIG. 13 is a perspective view of a measuring device according to a second embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing a schematic view of the inside of the measuring device shown in FIG. [Figure 8] FIG. 13 is a perspective view of a measuring device according to a third embodiment. [Figure 9] FIG. 9 is a front view of the measuring device of FIG. 8. [Figure 10] FIG. 9 is a right side view of the measuring device of FIG. 8. [Figure 11] FIG. 9 is a rear view of the measuring device of FIG. 8. [Figure 12] FIG. 9 is a bottom view of the measuring device of FIG. 8. [Figure 13] 9 is a perspective view showing a state in which the sensor of FIG. 4 is inserted into the measuring device of FIG. 8. [Figure 14] FIG. 9 is a bottom view illustrating a schematic diagram of the function of an ejector in the measuring device of FIG. 8. [Figure 15] 9 is a cross-sectional view showing a schematic diagram of a function of an ejector in the measuring device of FIG. 8. [Figure 16] FIG. 13 is a perspective view of a measuring device according to a fourth embodiment. [Figure 17] FIG. 17 is a plan view of the measuring device of FIG. 16. [Figure 18] FIG. 17 is a side view of the measuring device of FIG. 16. [Figure 19] FIG. 13 is a perspective view of a measuring device according to a fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The measuring device of this embodiment is a measuring device that measures a sample using a sheet-like sensor, and is equipped with a housing and an insertion port formed at one end of the housing and having a width sufficient to insert the sensor, and the guide surface, which is the surface on which the insertion port is formed, is continuously recessed from the periphery towards the insertion port.

[0009] The specimen here is, for example, a body fluid collected from a living body, and specific examples include blood and urine. The measurement is, for example, the measurement of components contained in the specimen, and when the specimen is blood, examples include the measurement of blood glucose, hemoglobin, or hemoglobin A1c, and when the specimen is urine, examples include urinary sugar, bilirubin, or urinary protein.

[0010] The housing of the measuring device is formed with an insertion opening into which the sensor is inserted. The insertion opening is formed on a guide surface, which is one end face of the housing. The guide surface is surrounded by a periphery. The insertion opening is formed at a position away from any of the periphery. Because the insertion opening is formed in this manner, even if foreign matter such as dust adheres to the periphery, the foreign matter is less likely to adhere to the insertion opening, which is away from the periphery. The guide surface is continuously recessed from the periphery toward the insertion opening. Because the guide surface is recessed in this manner, even if the tip of the sensor hits the vicinity of the insertion opening when inserting the sensor into the insertion opening, the sensor is guided to the insertion opening by the continuously recessed guide surface. This makes it easy to insert the sensor into the measuring device.

[0011] The insertion opening is desirably formed at a position including the center of the guide surface. By forming the sensor in this manner, when the sensor is inserted into the insertion opening, no matter where the tip of the sensor hits the guide surface, the sensor is guided into the insertion opening by the continuously concave guide surface.

[0012] It is preferable that the sensor is elongated, the width direction of the insertion opening corresponds to the width direction of the sensor, and the height direction of the insertion opening corresponds to the thickness of the sensor. If the sensor is formed in this way, it is easy to align the insertion direction of the sensor with the width direction of the insertion opening. Also, it is easy to hold one end of the sensor with the fingers and insert the other end into the insertion opening.

[0013] The guide surface is preferably a convex curved surface, so that the slope becomes steeper from the edge toward the insertion opening, allowing the sensor to be inserted quickly into the insertion opening.

[0014] The housing is preferably formed to be freestanding, and the guide surface is a surface that faces the placement surface when the housing is freestanding. When the housing is freestanding, it is expected that foreign matter such as dirt or dust on the placement surface will come into contact with the surface where the housing comes into contact with the placement surface, i.e., the periphery. In this case, since the guide surface, which is the surface that faces the placement surface, is continuously recessed from the periphery toward the insertion port, even if the foreign matter comes into contact with the periphery, it will not come into contact with the insertion port inside the periphery.

[0015] In the measuring device of this embodiment, it is desirable that the housing has recesses recessed inward on both ends along the width direction of the insertion opening on the opposite side of the insertion opening. By forming such recesses, when the housing is held with the hand opposite the hand holding the sensor, the fingers of the hand can be hooked on both recesses, thereby preventing the housing from being accidentally dropped when inserting the sensor.

[0016] It is desirable that the housing has a rectangular parallelepiped shape, and that the recesses are formed on a pair of faces at both ends of the width direction of the insertion opening relative to the face where the insertion opening is located. In other words, by aligning the direction in which the recesses are provided with the width direction, the housing can be stably gripped when inserting the sensor.

[0017] It is preferable that the pair of surfaces are entirely recessed, so that the housing can be stably supported by the fingers no matter where on the two surfaces located in the width direction of the sensor is grasped.

[0018] It is preferable that the entire periphery of the side surface of the housing is recessed, so that it is possible to hold not only both sides of the sensor in the width direction but also both sides of the sensor in the length direction.

[0019] Here, the recess is preferably a concave curved surface formed such that the center along the longitudinal direction is recessed in a valley shape and the top and bottom surfaces are raised from the center. By forming it in this way, it becomes easier to insert the tip of a finger into the recessed valley. Furthermore, since the recess is a concave curved surface, the tip of a finger easily fits the curved surface.

[0020] The shape and function of the sensor are as described above.

[0021] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. Common reference numerals in each drawing indicate the same parts without any special explanation. In addition, each member and each part shown in each drawing is merely a schematic drawing, and the size and positional relationship of the actual product are not necessarily accurately shown.

[0022] (1) First embodiment 1 and 2 are a perspective view and a front view of the measuring device 10 of the first embodiment, and Fig. 3 is a view showing the internal structure of the measuring device 10 placed on a placement surface S.

[0023] (1-1) Configuration The measuring device 10 of the first embodiment measures a sample using a sheet-like sensor 50 (see FIG. 4), which will be described later. The measuring device 10 of the first embodiment includes a housing 20 and a guide surface 40, which is one end surface of the housing 20 and is surrounded by a periphery 41. An insertion port 30 is formed in the guide surface 40 at a position away from both peripheries 41. The sensor 50 is inserted into the insertion port 30. The guide surface 40, which is the surface on which the insertion port 30 is formed, is continuously recessed from the periphery 41 toward the insertion port 30, as shown in FIGS. 1 and 3. In other words, the guide surface 40 expands continuously from the insertion port 30 to the periphery 41. The insertion port 30 is formed at a position including the center of the guide surface 40. The guide surface 40 is formed as a convex curved surface, as shown in FIG. 3. Hereinafter, in the measuring device 10, the side on which the guide surface 40 is formed is referred to as the "front side", and the opposite side is referred to as the "rear side".

[0024] Specifically, the housing 20 has a substantially rectangular parallelepiped shape with rounded edges and corners. One end face of the rectangular parallelepiped shape of the housing 20 is formed as a guide surface 40. An insertion opening 30 is formed at the center of the guide surface 40. In other words, the insertion opening 30 is formed at a position away from all of the periphery 41 of the guide surface 40. The insertion opening 30 is formed such that the width direction length along the long side of the guide surface 40 is greater than the height direction length along the short side. A switch 23 is provided near the guide surface 40 on the top surface of the housing 20.

[0025] A part of the sensor support section 31 inside the housing 20 can be seen from the insertion port 30. As shown in Fig. 3, the sensor support section 31 is connected to a substrate 11 built into the housing 20 and is a section with which the sensor 50 inserted from the insertion port 30 comes into contact. Although not shown, the substrate 11 is provided with an electric circuit that amplifies an electric signal, an analysis section that analyzes the specimen concentration, a transmitter that transmits the analyzed specimen concentration to the outside as data, and a power supply installation section for energizing a power source that drives the electric circuit, the analysis section, and the transmitter, and operation begins when power is supplied to the power supply installation section from a power source such as a battery.

[0026] As shown in Fig. 2, the side surface of the housing 20 is formed to be slightly wider at the front side. Furthermore, as shown in Fig. 1, the periphery 41 of the guide surface 40 is formed on the same plane. With the configuration shown in Fig. 2, the measuring device 10 of this embodiment can be made to stand on its own on a flat mounting surface S such as a desk or table, with the guide surface 40 facing downward, as shown in Fig. 3. That is, the housing 20 of the measuring device 10 of this embodiment is formed to be freestanding. That is, the guide surface 40 is the surface that faces the mounting surface S when the measuring device 10 is freestanding.

[0027] 4 is a plan view of the sensor 50 used in the measuring device 10 of this embodiment. The sensor 50 is formed in a sheet shape that is approximately rectangular in plan view. One end of the sensor 50 has rounded corners, giving it a shouldered shape. This shouldered portion is referred to as the tip 51. Hereinafter, the side of the sensor 50 where the tip 51 is formed is referred to as the "tip side," and the opposite side is referred to as the "rear side."

[0028] In the sensor 50, an electrode layer 53 is formed on a base layer 52 made of, for example, a synthetic resin (plastic), and the electrode layer 53 is formed of, for example, a metal material such as gold (Au) or a carbon material such as carbon. A part of the electrode layer 53 is covered with a transparent spacer 54, and the electrode layer 53 is further covered with a covering layer 55 made of the same material as the base layer 52 except for a part of the spacer 54. The rear end portion of the electrode layer 53 is not covered with the spacer 54 and the covering layer 55 and is kept exposed. Furthermore, a drop port 56 is formed at the very end of the tip portion 51 as a gap between the electrode layer 53 and the spacer 54. An air hole 57 is provided slightly rearward from the drop port 56, penetrating the covering layer 55 and the spacer 54. A reaction reagent corresponding to the target substance in the specimen (i.e., the substance intended to be measured by the measuring device 10) is applied to the tip side of the electrode layer 53.

[0029] In other words, the sensor 50 has an elongated shape in which the horizontal length in the drawing is greater than the vertical length in the drawing. The width direction length of the insertion opening 30 shown in Fig. 1 corresponds to the short direction length W of the sensor 50. The height direction length of the insertion opening 30 corresponds to the thickness T of the sensor 50 shown in Fig. 5 described later.

[0030] (1-2) Effect As shown in Figures 1 and 3, the guide surface 40 is a convex curved surface that is continuously concave from the peripheral edge 41 toward the insertion opening 30. Therefore, when the measuring device 10 is placed upright on the mounting surface S as shown in Figure 3, even if a foreign object on the surface of the mounting surface S adheres to the peripheral edge 41, it will not adhere to the edge of the insertion opening 30.

[0031] When attaching sensor 50 to measuring device 10, first, hold the portion of sensor 50 where electrode layer 53 is not exposed with the fingers of one hand, while holding measuring device 10 shown in Figure 1 with the other hand, and insert the rear end side of sensor 50 into insertion port 30 shown in Figure 1.

[0032] In addition, since the guide surface 40 is a convex curved surface and is continuously concave from the periphery 41 toward the insertion opening 30, no matter where the electrode layer 53 side of the sensor 50 is abutted on the guide surface 40, it can be guided along the curved surface and smoothly inserted into the insertion opening 30.

[0033] Fig. 5 is a perspective view showing the state in which sensor 50 is completely attached to measuring device 10. In the state shown in Fig. 5, the rear end portion of sensor 50 is inserted inside housing 20, and the front end portion is exposed. When sensor 50 is inserted into housing 20, electrode layer 53 on the rear end side of sensor 50 contacts a terminal (not shown) provided on sensor support portion 31 (see Fig. 3) inside housing 20, and forms one electric circuit together with the electric circuit formed on substrate 11.

[0034] As shown in Fig. 5, when the sensor 50 is inserted into the housing 20, the switch 23 is turned on (some products turn on the power while the sensor 50 is inserted into the housing 20), and an appropriate amount (e.g., one drop) of a specimen (e.g., blood) is applied to the application port 56, whereupon the target substance in the specimen chemically reacts with the reaction reagent applied to the electrode on the tip side, and the electrical signal generated by the chemical reaction is amplified through an electrical circuit. The amplified electrical signal is then transmitted to the aforementioned analysis unit (not shown). The analysis unit analyzes the concentration of the target substance in the specimen based on the received electrical signal.

[0035] (2) Second embodiment Fig. 6 is a perspective view of the measuring device 10 of the second embodiment, and Fig. 7 shows the state in which the measuring device 10 of the second embodiment is placed on a placement surface S, with the internal structure shown in a schematic cross section.

[0036] (2-1) Configuration The measuring device of the second embodiment differs from the measuring device 10 of the first embodiment in that the guide surface 40 is made of a flexible material such as rubber and has a suction cup shape, and has a valve body 42 with a notch formed in the center of the guide surface 40. Other than that, the external shape and internal structure are similar to the measuring device 10 of the first embodiment.

[0037] (2-2) Effect As shown in Figures 6 and 7, the guide surface 40 is a convex curved surface that is continuously concave from the peripheral edge 41 toward the insertion opening 30. Therefore, when the measuring device 10 is placed upright on the mounting surface S as shown in Figure 3, even if foreign matter on the surface of the mounting surface S adheres to the peripheral edge 41, it will not adhere to the edge of the insertion opening 30.

[0038] 7, when the housing is pressed toward the placement surface S, the front side of the housing 20 elastically deforms and bends slightly outward, causing the guide surface 40, which acts as a suction cup, to adhere to the placement surface S. When the guide surface 40 adheres to the placement surface S, the air that was between the guide surface 40 and the placement surface S is discharged into the inside of the housing through the valve body 42, which is opened at the moment of adhesion.

[0039] The attachment of the sensor 50 to the measuring device 10 and the subsequent measurement of the sample are similar to those in the first embodiment.

[0040] (3) Third embodiment 8 to 12 show a measuring device 10 of the third embodiment in a perspective view (FIG. 8), a front view (FIG. 9), a right side view (FIG. 10), a rear view (FIG. 11) and a bottom view (FIG. 12), respectively.

[0041] (3-1) Configuration The meter 10 of the third embodiment measures a sample using the sheet-like sensor 50 described above (see FIG. 4). The meter 10 of the third embodiment comprises a housing 20 and an insertion opening 30 formed at one end of the housing 20 and having a width that allows the sensor 50 to be inserted. The entire periphery of the side of the housing 20 forms a recess 25. Hereinafter, the side of the meter 10 where the insertion opening 30 is formed will be referred to as the "front side" and the opposite side will be referred to as the "rear side".

[0042] Incidentally, the recess 25 does not need to be provided around the entire circumference of the housing 20 as in this embodiment, but may be provided only on the right side surface and the symmetrical left side surface shown in Fig. 10, and the front and back surfaces may be formed flat. That is, the entire pair of surfaces (i.e., the right side surface and the left side surface) at both ends in the width direction of the insertion opening 30 relative to the surface where the insertion opening 30 is located (i.e., the front surface) are recessed. The recess 25 is a concave curved surface formed such that the center along the longitudinal direction is recessed in a valley shape and the top and bottom surfaces rise from the center, as shown in Figs. 9 to 11.

[0043] The recesses 25 may be formed as a pair of recesses provided on the rear side of the right and left side faces formed in a flat shape, as shown by the dashed lines in Fig. 10. That is, the recesses 25 are formed on a pair of faces (i.e., the right and left sides) at both ends in the width direction of the insertion opening 30 relative to the face where the insertion opening 30 is located (i.e., the front face).

[0044] Furthermore, even if the housing 20 is not rectangular (for example, approximately cylindrical with one side cut into a flat shape to prevent rolling), a recess 25 recessed inward may be formed on both ends along the width direction of the insertion opening 30 on the opposite side of the housing 20 from the insertion opening 30 (i.e., the rear side).

[0045] Specifically, the housing 20 has an approximately rectangular parallelepiped shape consisting of six faces: a top face (FIG. 8) and a bottom face (FIG. 12) that are approximately rectangular with rounded corners, and a front face (FIGS. 8 and 9), a back face (FIGS. 11), and both side faces (FIGS. 8 and 10; the left side face is omitted) on which a recess 25 is formed.

[0046] In the third embodiment, as in the first embodiment, a guide surface 40 is provided on one end surface (i.e., the front surface) of the housing 20 and surrounded by a periphery 41. The insertion opening 30 is formed at a position on the guide surface 40 away from any of the periphery 41. A sensor 50 is inserted into the insertion opening 30. The guide surface 40 on which the insertion opening 30 is formed is continuously recessed from the periphery 41 toward the insertion opening 30, as shown in Figs. 8 and 9. The insertion opening 30 is formed at a position including the center of the guide surface 40. The guide surface 40 is formed as a convex curved surface, as shown in Figs. 8 and 9.

[0047] The insertion port 30 is formed so that the widthwise length along the longitudinal direction of the guide surface 40 is greater than the heightwise length along the lateral direction. A switch 23 (FIG. 8) is provided at the center of the top surface 21 of the housing 20. Meanwhile, a substantially rectangular ejector 24 is provided at a position slightly forward from the center of the bottom surface of the housing 20. A pressing portion 24A (see FIG. 15), which is contacted by the rear end of the inserted sensor 50, protrudes into the housing 20 from the inner surface near the rear end of the ejector 24.

[0048] As in the first embodiment, a part of a sensor support section 31 (see FIG. 3), not shown, built into the housing 20 can be seen inside the insertion port 30. As shown in FIG. 3, the sensor support section 31 is connected to a substrate 11 (see FIG. 3), not shown, built into the housing 20, and is a section with which the sensor 50 inserted through the insertion port 30 comes into contact. Although not shown, the substrate 11 is provided with an electric circuit that amplifies an electric signal, an analysis section that analyzes the specimen concentration, a transmitter that transmits the analyzed specimen concentration to the outside as data, and a power supply installation section for energizing a power source that drives the electric circuit, the analysis section, the transmitter, and the like, and operation begins when power is supplied to the power supply installation section from a power source such as a battery.

[0049] The measuring device 10 of the third embodiment also uses the sensor 50 shown in Fig. 4. The structure and method of use of the sensor 50 are similar to those of the first embodiment.

[0050] (3-2) Effect As shown in FIGS. 8 and 9, the guide surface 40 is continuously recessed from the periphery 41 toward the insertion opening 30. Therefore, even if foreign matter adheres to the periphery 41, it is unlikely to adhere to the edge of the insertion opening 30.

[0051] When attaching sensor 50 to measuring device 10, first, a portion of sensor 50 where electrode layer 53 is not exposed is grasped with the fingers of one hand, while the other hand grasps recess 25 of measuring device 10 shown in Fig. 1, and the rear end side of sensor 50 is inserted into insertion opening 30 shown in Figs. 8 and 9. Gripping recess 25 with the fingers prevents measuring device 10 from being accidentally dropped during insertion. In addition, the width direction of both insertion opening 30 and sensor 50 is clearly larger than the height direction (or thickness direction), so that it can be inserted in the correct direction.

[0052] In the third embodiment, the guide surface 40 is continuously concave from the periphery 41 toward the insertion port 30, so that no matter where the electrode layer 53 side of the sensor 50 is abutted against the guide surface 40, it can be guided along the curved surface and successfully inserted into the insertion port 30.

[0053] Fig. 13 is a perspective view showing the state in which sensor 50 is completely attached to measuring device 10. In the state shown in Fig. 13, the rear end portion of sensor 50 is inserted inside housing 20, and the front end portion is exposed. When sensor 50 is inserted into housing 20, electrode layer 53 on the rear end side of sensor 50 contacts a terminal (not shown) provided on sensor support portion 31 (see Fig. 3) inside housing 20, and forms one electric circuit together with the electric circuit formed on substrate 11.

[0054] As shown in Fig. 13, with the sensor 50 inserted in the housing 20, switch 23 is turned on (some products may be powered on with the sensor 50 inserted in the housing 20), and an appropriate amount (e.g., one drop) of a specimen (e.g., blood) is applied to the application port 56, whereupon the target substance in the specimen chemically reacts with the reaction reagent applied to the electrode on the tip side, and an electrical signal generated by the chemical reaction is amplified through an electrical circuit. The amplified electrical signal is then transmitted to an analysis unit (not shown) inside the housing 20. The analysis unit analyzes the concentration of the target substance in the specimen based on the received electrical signal.

[0055] When the sample measurement is completed, when the ejector 24 is moved forward from the initial state shown in the left drawings of FIGS. 14 and 15, the pressing portion 24A presses the rear end of the sensor 50 forward, and the sensor 50 can be removed.

[0056] (4) Fourth embodiment 16 to 18 show a measuring device 10 of the fourth embodiment in a perspective view (FIG. 16), a plan view (FIG. 17), and a side view (FIG. 18), respectively.

[0057] In this embodiment, the bottom surface 22 protrudes forward from the top surface 21, so that when viewed from a slightly upward position, which is the normal viewpoint, the insertion port 30 is easily visible, making it easy to insert the sensor 50.

[0058] The remaining external shape, internal structure, and operation of this embodiment are similar to those of the measuring device 10 of the third embodiment.

[0059] (5) Fifth embodiment 19 is a perspective view of a measuring device 10 according to a fifth embodiment. In this embodiment, a transparent portion 21A made of a transparent or semi-transparent material is formed in an area near the front side of the top surface 21. The sensor support portion 31 inside the housing 20 can be seen through the transparent portion 21A. Because the transparent portion 21A is formed, the sensor support portion 31 at the back of the insertion port 30 is easily visible when viewed from slightly above, which is a normal viewpoint, and therefore the sensor 50 can be easily inserted.

[0060] The remaining external shape, internal structure, and operation of this embodiment are similar to those of the measuring device 10 of the third embodiment.

[0061] Furthermore, preferred embodiments of the present disclosure will be described below.

[0062] (Appendix 1) A measuring device that measures a sample using a sheet-like sensor, A housing and a guide surface that is an end surface of the housing and is surrounded by a periphery; an insertion opening formed in the guide surface at a position away from any of the periphery; Equipped with The guide surface is continuously recessed from the peripheral edge toward the insertion opening.

[0063] (Appendix 2) The measuring device according to claim 1, wherein the insertion port is formed at a position including the center of the guide surface.

[0064] (Appendix 3) The sensor has an elongated shape, a width direction length of the insertion opening corresponds to a short length direction length of the sensor, 3. The measuring device according to claim 1, wherein a height direction length of the insertion opening corresponds to a thickness of the sensor.

[0065] (Appendix 4) 4. The measuring device according to claim 1, wherein the guiding surface is a convex curved surface.

[0066] (Appendix 5) 5. The measuring device according to claim 1, wherein the housing is free-standing and the guide surface is a surface that faces a placement surface when the housing is free-standing.

[0067] (Appendix 6) The measuring device described in Appendix 1, wherein the housing has an inwardly recessed portion formed on both ends along the width direction of the insertion opening on the opposite side of the insertion opening.

[0068] (Appendix 7) The measuring device described in Appendix 6, wherein the housing is rectangular and the recess is formed in a pair of faces at both ends of the width of the insertion opening relative to the face on which the insertion opening is located.

[0069] (Appendix 8) The measuring device according to claim 6 or 7, wherein the entire pair of surfaces are the recessed portion.

[0070] (Appendix 9) 9. The measuring device according to claim 6, wherein the recess is formed around the entire periphery of the side surface.

[0071] (Appendix 10) The measuring device according to any one of Supplementary Note 6 to Supplementary Note 9, wherein the recess is a concave curved surface formed such that the center along the longitudinal direction is recessed in a valley shape and the top and bottom surfaces rise from the center. [Industrial Applicability]

[0072] The present disclosure is applicable to a measuring device, such as a blood glucose measuring device, that has an insertion port in a housing into which a measurement sensor is inserted. [Explanation of symbols]

[0073] 10 Measuring instruments 20. Cabinet 25 Recess 30 Insertion port 40 Guidance surface 41 Periphery 50 Sensors S Placement surface

Claims

1. A measuring device that measures a sample using a sheet-like sensor, A housing and a guide surface that is an end surface of the housing and is surrounded by a periphery; an insertion opening formed in the guide surface at a position away from any of the periphery and into which the sensor is inserted; Equipped with The guide surface is continuously recessed from the peripheral edge toward the insertion opening.

2. The measuring device according to claim 1 , wherein the insertion opening is formed at a position including a center of the guide surface.

3. The sensor has an elongated shape, a width direction length of the insertion opening corresponds to a short length direction length of the sensor, The measuring device according to claim 2 , wherein a height direction length of the insertion opening corresponds to a thickness of the sensor.

4. The measuring device according to claim 1 , wherein the guide surface is a convex curved surface.

5. 5. The measuring device according to claim 1, wherein the housing is formed to be free-standing, and the guide surface is a surface that faces a placement surface when the housing is free-standing.

6. The measuring device according to claim 1 , wherein the housing has inwardly recessed portions formed on both ends along a width direction of the insertion opening on the opposite side to the insertion opening.

7. The measuring device according to claim 6 , wherein the housing is shaped like a rectangular parallelepiped, and the recess is formed in a pair of faces at both ends in a width direction of the insertion opening with respect to a face on which the insertion opening is located.

8. The measuring device according to claim 7 , wherein the recessed portion is formed entirely on the pair of faces.

9. The measuring device according to claim 8 , wherein the recess is formed around an entire periphery of a side surface of the housing.

10. 10. The measuring instrument according to claim 6, wherein the recess is a concave curved surface formed such that a center along the longitudinal direction is recessed in a valley shape and a top surface and a bottom surface rise from the center.

Images