WO2014041679A1

WO2014041679A1 - Component measurement device

Info

Publication number: WO2014041679A1
Application number: PCT/JP2012/073595
Authority: WO
Inventors: 桃木秀幸
Original assignee: テルモ株式会社
Priority date: 2012-09-14
Filing date: 2012-09-14
Publication date: 2014-03-20
Also published as: JPWO2014041679A1; JP5974103B2

Abstract

A blood glucose meter (10) as a component measurement device includes a housing (12), a measuring part (26) protruding from a lateral face of the housing (12) and capable of detecting a component in a bodily fluid, and a weight part (75) configured so as to be relatively heavy among members integrally accommodated in the housing (12). The blood glucose meter (10) is further provided with a case support member (76) or a cushioning member (70) for elastically deforming when dropped, and thereby displacing the measuring part (26) and the weight part (75, 102) relative to each other.

Description

Component measuring device

The present invention relates to a component measuring apparatus for measuring a component in a liquid, for example.

When detecting biological components in body fluids such as blood and urine and measuring the amount and properties of the components, optically measurable component measuring devices are used. In particular, a handy type component measuring apparatus that can be carried around has been developed in recent years because of the desire to easily perform measurement regardless of location (see, for example, Registered Utility Model No. 3155842).

A blood glucose meter (component measurement device) disclosed in the registered utility model No. 3155842 has a housing in which various members for measuring blood glucose levels are housed, and a chip that protrudes from the tip of the housing and takes in blood. And a measurement unit that can be mounted. As described above, the measurement unit protrudes from the housing, so that the user can easily visually recognize the contact between the chip and the blood and easily take blood into the apparatus.

By the way, the handy type component measuring device always has a risk of dropping the device during carrying or measurement. And if a big impact (load) is applied to the measurement part which protruded from the housing | casing by the fall of an apparatus, this measurement part will be damaged and a malfunction will generate | occur | produce in mounting | wearing of a chip | tip with respect to a measurement part, or light-shielding property. In particular, in recent years, from the viewpoint of cost reduction and the like, there is a tendency to mold the housing and the measurement unit with a resin material, and it is required to improve the impact resistance of the apparatus when dropped.

The present invention has been made in view of the above circumstances, and it is possible to improve the impact resistance of the apparatus by absorbing the impact at the time of dropping with a simple configuration, thereby improving the handleability of the apparatus. An object of the present invention is to provide a component measuring apparatus that can be enhanced.

In order to achieve the above-described object, the present invention is configured to be relatively heavy among a casing, a measurement unit that protrudes from the casing and can detect a component in a liquid, and a member accommodated in the casing. A component measuring device having a weight part, the shock absorber being provided in the housing and absorbing an impact acting on the measuring unit, wherein the shock absorber is elastic when the component measuring device is dropped. By deforming, the measurement part and the weight part are relatively displaced.

According to the above, the component measuring device can absorb the shock applied to the measuring unit well by the relative displacement of the measuring unit and the weight unit when the component measuring device is dropped by the impact absorbing unit provided in the housing. Can do. Therefore, the component measuring device greatly improves the impact resistance of the measuring unit even when, for example, a configuration in which heavy members such as a plurality of batteries are accommodated in the housing or a configuration in which the measuring unit is made of a resin material is adopted. Thus, the breakage of the measurement unit can be suppressed. As a result, even if the component measuring device is dropped, the occurrence of failure can be reduced and the handling of the device can be improved.

In this case, the shock absorbing portion may include an elastic member that elastically connects the housing and the weight portion.

As described above, the shock absorbing portion includes the elastic member that elastically connects the housing and the weight portion, so that the shock transmitted from the housing to the weight portion can be easily absorbed by the elastic member. The measurement part and the weight part can be smoothly displaced relative to each other.

The elastic member is disposed on at least one side of the weight portion corresponding to the protruding direction of the measurement unit protruding from the casing, extends inclining with respect to the protruding direction, and is connected to the casing. It is preferable to have an extended portion.

As described above, since the elastic member has the extending portion inclined with respect to the protruding direction of the measuring unit, the weight unit can be elastically displaced in the protruding direction of the measuring unit when the component measuring device is dropped. Therefore, the impact transmitted from the measurement unit or the housing is more reliably absorbed in the protruding direction of the measurement unit, and the impact resistance of the measurement unit can be further improved.

Here, the weight part may include a battery part that houses a battery capable of supplying power to the component measuring apparatus.

Thereby, the shock absorbing part can absorb the shock transmitted to the battery part containing the battery, and can suppress the dropping of the battery or the damage of other members due to the battery part.

Alternatively, the shock absorbing part may include a buffer member provided between a surface opposite to the protruding direction of the measuring part and a continuous part connected to the housing.

As described above, the shock absorbing portion is provided between the surface opposite to the protruding direction of the measuring portion and the continuous portion connected to the housing, so that the component measuring device is transmitted between the measuring portion and the continuous portion when the component measuring device is dropped. The shock can be absorbed well. Therefore, damage to the measurement unit can be more reliably reduced.

Further, the buffer member may be provided so as to surround the detection circuit disposed on the opposite surface.

This makes it possible to easily dissipate heat even if the detection circuit generates heat during measurement by the component measuring device.

1 is a perspective view showing an overall configuration of a blood glucose meter according to an embodiment of the present invention. FIG. 2 is a partial side cross-sectional view showing a state in which the blood glucose meter of FIG. 1 is viewed from the Y2 direction. It is a disassembled perspective view which shows the internal structure of the housing | casing of FIG. It is a fragmentary perspective view which shows the state which looked at the measurement part and buffer member of FIG. 2 from the base end direction. It is a principal part perspective view which shows the relationship between the housing | casing of the blood glucose meter of FIG. 1, and a battery part. FIG. 6A is a first explanatory diagram schematically showing the state of impact when dropped from the measuring unit of the blood glucose meter, and FIG. 6B is a diagram schematically showing the state of impact when falling from the housing of the blood glucose meter. It is the 2nd explanatory view shown. It is a perspective view which shows the whole structure of the blood glucose meter which concerns on a 1st modification. It is a perspective view which shows the whole structure of the blood glucose meter which concerns on a 2nd modification.

Hereinafter, preferred embodiments of the component measuring apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In the description of the embodiment, a blood glucose meter that mainly measures a blood glucose level among components in blood (liquid) will be described in detail as a component measuring device. This blood glucose meter is a device in which a doctor, a nurse, a diabetic patient or the like (hereinafter referred to as a user) collects blood, measures a blood glucose level, and manages measurement data of the blood glucose level.

FIG. 1 is a perspective view showing the overall configuration of a blood glucose meter 10 (component measurement device) according to an embodiment of the present invention. In the following description, based on the arrows shown in FIG. 1, the extending direction (longitudinal direction) of the distal end and the proximal end of the apparatus is the X direction, the lateral width direction of the apparatus is the Y direction, and the vertical direction (short side) of the apparatus. Direction) is also referred to as the Z direction. Further, the blood glucose meter 10 has a distal direction X1 direction, a proximal direction X2 direction, a left direction viewed from the distal end Y1 direction, a right direction Y2 direction, an upward direction of the blood glucose meter 10 Z1 direction, and a downward direction Z2 direction. Also called. These directions are for convenience of explanation, and it is needless to say that the blood glucose meter 10 may be used in any direction.

The blood glucose meter 10 has a box-shaped housing 12 that constitutes an appearance, and various members for measuring blood glucose levels are accommodated in the housing 12. A display unit 14 and an operation unit 16 are provided on a plane on the Y2 direction side of the housing 12, and a battery 18 (see FIG. 2) is provided on a plane (opposite surface) on the Y1 direction side of the housing 12. A battery insertion surface (not shown) that can be inserted is provided. The casing 12 is configured in a substantially rectangular shape that surrounds both planes (side surfaces in the X direction and the Z direction) so as to have a predetermined thickness, and has corners formed in an R shape. The housing 12 is integrated by connecting two cases (a first case 12a and a second case 12b) that are divided with a middle portion in the width direction (Y direction) as a base point.

A panel 20 having transparency is covered on the entire surface of the housing 12 on the Y2 direction side, and the display unit 14 and the operation unit 16 are protected by the panel 20. For example, a liquid crystal panel 22 having a display surface 14a for displaying information necessary for blood glucose level measurement is applied to the display unit 14. Examples of the display information on the display unit 14 include blood glucose level data, guidance information at the time of measurement, apparatus and measurement error information, and the like. The operation unit 16 is constituted by three push buttons 16a provided on the base end side of the display unit 14, and has a function of performing power on / off, switching display information on the display unit 14, and confirming blood glucose level. Have.

A protuberance 24 that protrudes from the side surface on the tip side is formed near the top of the side surface on the front end side of the housing 12, and the measurement unit 26 is arranged so as to penetrate from the inside to the outside of the protuberance 24. It is installed. The measurement unit 26 includes a tip case 28 made of a member different from the housing 12, and the tip case 28 has a cylindrical portion 30 that protrudes in the tip direction. The cylindrical portion 30 is exposed to the outside of the housing 12 through the insertion hole 24a formed in the raised portion 24, and an opening 30a to which the measurement chip 32 is detachably attached is formed at the tip. Yes.

The measurement chip 32 includes a base portion 34 formed in a disk shape, a nozzle 36 that is continuous to the distal end surface side of the base portion 34, and an engagement portion 38 that is continuous to the proximal end surface side of the base portion 34. The base portion 34 is formed so as to substantially match the outer diameter of the cylindrical portion 30, and a nozzle 36 is erected at the center portion thereof. The nozzle 36 has a collection hole 36a penetrating the shaft center, and a concave groove 36b for facilitating blood absorption is formed on the tip surface of the nozzle 36.

The engaging portion 38 has a plurality of locking claws 38 a having elastic force and can be locked to a locked portion (not shown) formed in the opening 30 a of the cylindrical portion 30. In addition, a test paper (not shown) into which blood collected through the collection hole 36a of the nozzle 36 penetrates is accommodated on the base end surface of the base portion 34 and inside the locking claw 38a. The blood glucose meter 10 measures the blood component by irradiating the colored blood soaked into the test paper with irradiation light and receiving the reflected light from the test paper.

Further, an eject operation element 40 that is slidable with respect to the housing 12 is attached to the tip of the upper side surface of the housing 12. The eject operator 40 is connected to an eject mechanism 42 (see FIG. 3) inside the housing 12, and the eject mechanism 42 pushes out the measurement chip 32 attached to the cylindrical portion 30 as the eject operator 40 slides. It has a function to remove.

FIG. 2 is a partial side sectional view showing the blood glucose meter 10 of FIG. 1 as viewed from the Y2 direction, and FIG. 3 is an exploded perspective view showing the internal structure of the housing 12 of FIG. Inside the housing 12 of the blood glucose meter 10, in addition to the display unit 14, the operation unit 16, the measurement unit 26, and the ejection mechanism 42 described above, a control system substrate 44 and a battery unit 46 that control the measurement of blood glucose level are provided. Be contained. Inside the housing 12, a measurement unit arrangement unit 48 for arranging the measurement unit 26 is located near the tip, and a main arrangement unit in which the display unit 14, the operation unit 16, the control system board 44, the battery unit 46, and the like are arranged. 50 are formed on the base end side of the measurement unit arrangement unit 48, respectively. The measurement unit arrangement unit 48 and the main arrangement unit 50 are separated by a partition plate 52 (continuous connection unit), and the partition plate 52 is connected to the inner surface of the housing 12.

The measurement unit 26 is mounted on the distal end case 28, the photometric block 54 accommodated in the distal end case 28, and the base end face of the photometric block 54, and a light emitting element and a light receiving element (both not shown) are mounted. And an optical system substrate 56 (see FIG. 4).

The tip case 28 is a member in which the cylindrical portion 30 and the block accommodating portion 58 connected to the cylindrical portion 30 are integrally formed of a resin material. The block accommodating part 58 is accommodated in the housing 12, and includes a diameter-enlarged part 58a that is expanded radially outward at the base end side position of the cylindrical part 30, and a rectangular part 58b that continues to the lower side of the enlarged-diameter part 58a. Have. The block accommodating portion 58 (the enlarged diameter portion 58a and the rectangular portion 58b) has a shape capable of accommodating the photometric block 54 from the proximal end side.

The photometric block 54 has a base end-side base 60 formed in a flat plate shape, and a protrusion 62 that protrudes from the center of the base 60 in the X1 direction. An optical path (through hole) (not shown) is provided inside the protruding portion 62, and irradiates light from the light emitting element provided on the optical system substrate 56 toward the test paper and reflected light from the test paper toward the light receiving element. Information is available. Further, a lens 62 a for condensing the irradiation light and the reflected light is attached to the tip end side of the protrusion 62.

The ejection mechanism 42 includes an ejecting member 64 that has an arc-shaped pushing portion 64 a that surrounds the periphery of the protruding portion 62 and is connected to the ejecting manipulator 40. The pushing portion 64a is sandwiched and accommodated between the tip case 28 and the photometry block 54, and moves forward relative to the tip case 28, thereby removing the measuring chip 32 attached to the cylindrical portion 30. In addition, the eject member 64 that has advanced to the distal end side is configured to return to its original position by an eject spring 66.

The optical system board 56 attached to the photometry block 54 has a detection circuit 68 for optically detecting the blood sugar level of blood soaked in the test paper. The optical system substrate 56 is formed in a shape that closes the base end face of the photometric block 54 without a gap, and is firmly connected to the photometric block 54 by screwing. A light emitting element and a light receiving element are mounted on the surface facing the photometry block 54 of the optical system substrate 56, and an amplifier and other elements are mounted on the opposite surface (see FIG. 4).

As the material constituting the housing 12, the tip case 28 of the measurement unit 26, and the photometry block 54, it is preferable to apply a resin material for the purpose of reducing the cost of the blood glucose meter 10. Examples of such resin materials include acrylic resins, polystyrene, polyethylene, polypropylene, hard polyvinyl chloride, polycarbonate, polymethyl methacrylate, ABS resin, polyester, polyphenylene sulfide (PPS), polyamide, polyimide, polyacetal, and the like. Among them, polymer alloys, polymer blends and the like containing one or more of them are listed.

The photometry block 54 having the optical system substrate 56 and the pushing portion 64 a of the eject member 64 are accommodated in the measurement portion arrangement portion 48 of the housing 12 in a state of being accommodated in the block accommodation portion 58 of the tip case 28. At the time of accommodation, the buffer member 70 is attached to the proximal end side of the distal end case 28, and the buffer member 70 is disposed between the measurement unit 26 and the partition plate 52.

FIG. 4 is a partial perspective view showing the measurement unit 26 and the buffer member 70 of FIG. 2 as viewed from the proximal direction. The buffer member 70 disposed between the partition plate 52 and the measurement unit 26 is configured as an impact absorption unit that absorbs an impact transmitted between the measurement unit 26 and the partition plate 52. That is, the buffer member 70 has a function of reducing breakage of each member (the tip case 28, the photometric block 54, and the optical system substrate 56) of the measurement unit 26 by reducing the impact applied to the measurement unit 26. .

The buffer member 70 is formed in a shape (ring) along the peripheral edge on the proximal end side of the distal end case 28, and a large hole portion 70a penetrating in the distal end and proximal end directions is provided in the buffer member 70. The ring constituting the buffer member 70 is formed to be thicker than the widths of the proximal end peripheral surfaces of the enlarged diameter portion 58a and the rectangular portion 58b, and can cover the inner side of the proximal end side edge portion of the distal end case 28. It has become. Thereby, the buffer member 70 can protect well the edge part of the front-end | tip case 28 which is easy to be damaged by an impact.

In addition to improving the cushioning property for the measurement unit 26, the buffer member 70 eliminates the gap between the measurement unit 26 and the partition plate 52, so that dust, liquid, or the like that circulates from the housing 12 side can enter the optical system substrate 56. It also has a function to prevent adhesion.

The hole 70a of the buffer member 70 can release heat during operation of the optical system substrate 56 by opening the detection circuit 68 (including elements and the like) of the optical system substrate 56. As a result, deformation of the buffer member 70 due to heat is suppressed. The buffer member 70 may be configured to close the optical system substrate 56 without having the hole 70a. Thereby, the light-shielding property with respect to the measurement part 26 can be improved more.

The buffer member 70 is preferably made of a material that can sufficiently absorb the impact of the measurement unit 26. The material constituting the buffer member 70 is not particularly limited. For example, a gel-like material such as silicone gel, a low-resilience foam material such as an open-cell foam having a polyurethane resin composition, ultra-low hardness A rubber material or the like can be suitably applied.

2 and 3, the main placement portion 50 placed on the base end side of the measurement portion placement portion 48 is placed so that the plane of the control system substrate 44 faces the side surface direction (Y direction). A wiring circuit is formed on the control system substrate 44 by printing, and a microcomputer, a memory, and other electronic components for executing predetermined processing are mounted on the wiring circuit. The control system board 44 is connected to the optical system board 56 by a flexible cable (not shown) and has a function of operating the optical system board 56 (that is, detecting a blood sugar level).

The control system board 44 is configured to process the detection value detected by the optical system board 56 and measure and manage the blood glucose level. In addition, a sensitive portion 44a corresponding to the push button 16a is provided near the base end (close to X2) of the Y2 side surface of the control system board 44, and the user's operation can be reflected by a signal from the sensitive portion 44a. It is possible.

A rectangular holder 72 is stacked on the Y2 direction side of the control system substrate 44, and the liquid crystal panel 22 is fitted and held in the holder 72. The holder 72 positions the liquid crystal panel 22 with respect to the housing 12 so that the display surface 14a faces the outside of the housing 12 from the window. Further, on the base end side of the holder 72, a button support portion 72a for supporting the push button 16a is provided. The push button 16a is elastically supported by the button support portion 72a, so that the user can perform a pressing operation.

On the other hand, a battery unit 46 is provided on the Y1 direction side of the control system substrate 44. The battery unit 46 is disposed near the lower portion in the housing 12, the two batteries 18, the battery storage case 74 that can store and hold the two batteries 18, and the space between the battery storage case 74 and the housing 12. And a case support member 76 (elastic member).

As the battery 18, a known primary battery (round dry battery) formed in a cylindrical shape can be applied, and the blood glucose meter 10 can be electrically driven by being housed in a pair in the battery housing case 74. Supply power. The power source used for the blood glucose meter 10 is not limited to a round battery, and a square battery, a button battery, a secondary battery, or the like may be applied.

The battery storage case 74 is formed in a box shape that opens to the Y1 direction side, and is attached so that its longitudinal direction extends along the X direction of the housing 12. Metal pieces 74 a that elastically and electrically contact and hold the battery 18 are provided inside both ends in the longitudinal direction of the battery storage case 74. The battery storage case 74 constitutes a weight part 75 that is heavier than other members housed in the housing 12 such as the measurement unit 26 and the control system board 44 by storing the battery 18.

Further, case support members 76 are continuously provided on the outer sides of both ends in the X direction of the battery storage case 74. The battery storage case 74 is disposed in a non-contact manner with respect to the control system substrate 44 by being fixed to the housing 12 via the case support member 76.

FIG. 5 is a perspective view showing a main part of the relationship between the casing 12 and the battery unit 46 of the blood glucose meter 10 of FIG. The case support member 76 of the battery unit 46 is configured as an impact absorbing unit that absorbs an impact. The case support member 76 includes a distal end spring portion 78 connected to the end portion on the distal end side of the battery storage case 74, and a proximal end spring portion 80 provided to the end portion on the proximal end side of the battery storage case 74. Have.

As shown in FIGS. 2 and 5, the tip spring portion 78 is connected to two root portions 82 (an upper root portion 82a and a lower root portion 82b) that are connected to the battery storage case 74, and an upper root portion 82a. An upper inclined portion 84a (extending portion), a lower inclined portion 84b (extending portion) continuous with the lower root portion 82b, and a connecting portion 86 that connects the other end portions of the upper and lower

inclined portions

84a and 84b. Have The upper root portion 82 a is continuous with the end surface near the upper portion of the battery storage case 74, and the lower root portion 82 b is continuous with the end surface near the lower portion of the battery storage case 74. The upper inclined portion 84a extends obliquely downward from the upper root portion 82a, and the lower inclined portion 84b extends obliquely upward from the lower root portion 82b. The upper inclined portion 84a and the lower inclined portion 84b intersect each other at the intermediate portion in the extending direction.

The connecting portion 86 is supported by the upper and lower

inclined portions

84a and 84b so as to extend in parallel with the end surface at a position spaced apart from the end surface of the battery storage case 74 by a predetermined distance. A first screw portion 86 a to which a mounting screw 88 is screwed is provided at a predetermined position of the connecting portion 86. The tip spring portion 78 elastically supports the tip end side of the battery storage case 74 by the first screw portion 86 a and the housing 12 being screwed together by a mounting screw 88.

On the other hand, the base end spring portion 80 includes an upper spring portion 90 extending from the battery storage case 74 to the inside of the upper corner of the base end side of the housing 12, and a base end side lower portion of the housing 12 from the battery storage case 74. The lower spring portion 92 extends to the inside of the corner portion. The upper and

lower spring portions

90 and 92 are formed in a zigzag shape as a whole, and elastically support the base end side of the battery storage case 74.

The shape of the base end spring portion 80 will be described in detail. The

base portions

90a and 92b of the upper and

lower spring portions

90 and 92 are connected to the battery storage case 74 at positions close to each other. These

root portions

90a and 92b are connected to the upper portion of the end surface of the battery storage case 74 in the X2 direction.

The upper spring portion 90 has a first inclined portion 90b extending from the root portion 90a in the proximal direction and downward, and one end portion (extending end portion) of the first inclined portion 90b bent to a distal direction and upward. A second inclined portion 90c that extends and a third inclined portion 90d that bends the other end of the second inclined portion 90c and extends in the proximal direction and downward are provided. The second inclined portion 90c extends longer than the first and third

inclined portions

90b and 90d. A second screw portion 90 e is provided at the extending end portion of the third inclined portion 90 d, and the second screw portion 90 e is screwed to the housing 12 by a mounting screw 88.

On the other hand, the lower spring portion 92 bends one end portion (extending end portion) of the first inclined portion 92b and the first inclined portion 92b extending from the root portion 92a in the proximal direction and downward, and in the distal direction. A second inclined portion 92c extending downward, and a third inclined portion 92d bending the other end of the second inclined portion 92c and extending in the proximal direction and downward. In other words, the upper and

lower spring portions

90, 92 have the first

inclined portions

90b, 92b extending in the same direction (parallel) from the

root portions

90a, 92a adjacent to each other, and the second

inclined portions

90c, 92c They extend in different directions. Further, the second inclined portion 92 c of the lower spring portion 92 is formed shorter than the second inclined portion 90 c of the upper spring portion 90. A third screw portion 92e is provided at the extended end portion of the third inclined portion 92d, and the third screw portion 92e is screwed to the housing 12 by a mounting screw 88 in the same manner as the upper spring portion 90. Is done.

The distal end spring portion 78 and the proximal end spring portion 80 (the upper spring portion 90 and the lower spring portion 92) support the battery storage case 74 on the XZ plane, thereby storing the battery in the internal space of the housing 12. The case 74 is floated. Therefore, the battery storage case 74 is prevented from contacting the control system board 44 disposed on the Y direction side. Further, since the battery storage case 74 is supported from three different directions by the tip spring portion 78 and the upper and

lower spring portions

90 and 92, vibration on the XZ plane can be satisfactorily suppressed.

Further, the upper and lower

inclined portions

84a and 84b of the tip spring portion 78, the first to third inclined portions 90b to 90d and 92b to 92d of the upper and lower spring portions 90 and 92 (hereinafter collectively referred to as the inclined portion 94). ) Is obliquely extended with respect to the housing 12 and the battery storage case 74, so that the impact transmitted from the housing 12 can be guided along the longitudinal direction of the battery storage case 74. Yes. That is, the impact when the blood glucose meter 10 is dropped is transmitted from the housing 12 to the battery storage case 74 based on the shape of the tip spring portion 78, the upper and

lower spring portions

90, 92, and the battery storage case 74 is smoothly moved. Displace in the longitudinal direction.

The blood glucose meter 10 according to the present embodiment is basically configured as described above, and the effects of the blood glucose meter 10 will be described next.

In using the blood glucose meter 10, the measurement chip 32 is attached to the measurement unit 26, and the user grips the housing 12 and collects blood into the measurement chip 32. After that, under the control of the control system substrate 44, the irradiation light is emitted from the light emitting element mounted on the optical system substrate 56, and the reflected light reflected from the test paper of the measurement chip 32 is received by the light receiving element. And in the control system board | substrate 44, the blood glucose level contained in the blood is calculated based on the light quantity which the light receiving element detected.

By the way, when the blood glucose meter 10 is used or carried, there is a possibility that the user may carelessly drop the blood glucose meter 10. The blood glucose meter 10 according to the present embodiment can greatly reduce the impact in the blood glucose meter 10 even when the blood glucose meter 10 is dropped.

FIG. 6A is a first explanatory diagram schematically showing the state of impact when dropped from the measurement unit 26 of the blood glucose meter 10, and FIG. 6B is the state of impact when dropped from the housing 12 of the blood glucose meter 10. It is the 2nd explanatory view showing roughly.

As shown in FIG. 6A, when the blood glucose meter 10 falls from the measurement unit 26 to the floor surface, an impact (load, energy) is transmitted from the measurement unit 26 on the distal end side toward the proximal end of the housing 12. . At this time, the shock at the time of dropping can be easily absorbed by the buffer member 70 and the case support member 76 attached to the proximal end side of the distal end case 28. That is, since the base end side of the buffer member 70 is supported by the partition plate 52, the measurement unit 26 is elastically displaced to the inside (base end side) of the housing 12 in response to an impact from the measurement unit 26. . That is, at the timing when the blood glucose meter 10 falls on the floor surface, the impact load is suppressed by the measurement unit 26 being displaced once with respect to the housing 12.

Further, when dropped, an impact is also transmitted from the measurement unit 26 to the battery unit 46 through the housing 12, but the case support member 76 that elastically connects the housing 12 and the weight unit 75 is elastically deformed. The shock is absorbed by. That is, the weight part 75 is displaced relative to the housing 12 (measurement part 26), and the load transmitted from the weight part 75 to the measurement part 26 is dispersed in time.

In particular, the weight portion 75 is guided so as to be elastically displaced in the longitudinal direction of the battery storage case 74 by the inclined portion 94 of the case support member 76 inclined with respect to the protruding direction of the measuring portion 26. Therefore, the relative displacement of the weight part 75 with respect to the measurement part 26 is smoothly performed, and the weight of the weight part 75 can be suppressed from being applied to the measurement part 26 at the timing when the blood glucose meter 10 falls on the floor surface. As described above, the measurement unit 26 greatly reduces the impact when the blood glucose meter 10 is dropped, so that damage to the tip case 28 and the photometric block 54 is reduced.

As shown in FIG. 6B, when the blood glucose meter 10 falls from the side surface of the housing 12 near the battery unit 46 to the floor surface, the impact is in the direction opposite to the falling of the housing 12 (hereinafter referred to as the initial transmission direction). It is transmitted to the battery unit 46 in the opposite housing 12. Even at the time of dropping, the case support member 76 can easily absorb the impact transmitted to the weight portion 75. That is, when the blood glucose meter 10 is dropped, it is possible to suppress the weight 75 from being applied to the housing 12, and damage to the housing 12 can be reduced.

In addition, since the tip spring portion 78 and the inclined portions 94 of the upper and

lower spring portions

90 and 92 are inclined with respect to the battery storage case 74, the tip spring portion 78 and the upper spring portion In the

lower spring portions

90 and 92, the impact is dispersed in a direction different from the initial transmission direction. Therefore, since the impact absorbed by the case support member 76 is transmitted to the weight portion 75, the vibration of the weight portion 75 can be suppressed.

Further, the impact applied to the housing 12 when it is dropped in FIG. 6B is transmitted from the housing 12 to the measuring unit 26 via the partition plate 52. However, since the buffer member 70 is interposed between the partition plate 52 and the measurement unit 26, the shock is easily absorbed by the buffer member 70. For this reason, the impact applied to the measurement unit 26 from the partition plate 52 is also alleviated, and breakage of the measurement unit 26 can be reduced.

It should be noted that the shock absorber that absorbs the shock is not limited to the blood glucose meter 10 described above, and can be applied to various devices. Hereinafter, some other modified examples of the blood glucose meter 10 (component measurement device) will be described as examples. In addition, in the following description, about the structure which has the same structure as the blood glucose meter 10 which concerns on this embodiment, or the same function, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

The blood glucose meter 10A according to the first modification shown in FIG. 7 has a housing 100 that is tapered toward the distal end. The measurement unit 26 to which the measurement chip 32 is attached is provided at the distal end portion of the housing 100, and the eject operator 40, the display unit 14, and the operation unit 16 are disposed on the upper surface of the housing 100 from the distal end side. ing. Inside the housing 100, a control system board 44 is arranged so as to face up and down, the display unit 14 is mounted on the upper surface side of the control system board 44, and a battery containing the battery 18 on the lower surface side thereof. A storage case 74 is attached. That is, the control system board 44 is configured as an integral member (weight part 102) to which the display unit 14 and the battery storage case 74 (including the battery 18) are attached.

The blood glucose meter 10 </ b> A according to the first modification is provided with an impact absorbing portion that absorbs an impact with respect to the weight portion 102. Specifically, the elastic members 104 are connected to both ends of the control system substrate 44 in the longitudinal direction. The elastic member 104 on the distal end side has a pair of rod portions 106 extending from the corner portion of the control system substrate 44 to the oblique distal end, and the pair of rod portions 106 intersect each other in the intermediate portion in the extending direction. Yes. The extending end portions of the pair of rod portions 106 are fixed to the inner surface of the housing 100 by screws or the like. Similarly, the elastic member 104 on the base end side has a pair of rod portions 106 that extend to the oblique base end, intersect, and are fixed to the inner surface of the housing 100.

The blood glucose meter 10A according to the first modification includes the elastic member 104, so that the impact transmitted from the housing 100 to the weight part 102 (the control system board 44, the display part 14, the battery storage case 74, and the battery 18). Can be absorbed well. That is, the shock absorbing part may be configured only by the elastic member 104 that elastically supports the weight part 102. The elastic member 104 can effectively suppress the weight applied from the weight part 102 to the measurement part 26 at the fall timing of the blood glucose meter 10A, and can reduce the damage of the measurement part 26.

A blood glucose meter 10B according to the second modification shown in FIG. 8 is provided with a measuring unit 26 at the center of the distal end of the housing 12, and a buffer member 70 (shock absorbing unit) on the proximal end side of the measuring unit 26. ing. That is, the shock absorbing unit may be configured only by the buffer member 70 that absorbs the shock applied to the measuring unit 26, contrary to the shock absorbing unit according to the first modification.

As described above, according to the

blood glucose meter

10, 10 </ b> A, 10 </ b> B according to the present embodiment, the blood glucose meter 10 is dropped by the buffer member 70, the case support member 76, or the elastic member 104 provided in the

housings

12, 100. Sometimes, the measurement unit 26 and the

weight units

75 and 102 are relatively displaced, so that the shock applied to the measurement unit 26 can be satisfactorily absorbed. Therefore, for example, even when the plurality of batteries 18 are accommodated in the

casings

12 and 100 and the weight is increased, or the measurement unit 26 is made of a resin material, the impact resistance of the measurement unit 26 is greatly increased. Can be improved.

That is, damage to the members accommodated in the

casings

12 and 100, the measurement unit 26, and the like can be suppressed. Even if the

blood glucose meters

10, 10A and 10B are inadvertently dropped, a failure (for example, the measurement unit 26) can be prevented. Therefore, it is possible to improve the handleability of the apparatus.

In addition, since the case support member 76 and the elastic member 104 have the inclined portion 94 and the rod portion 106 that are inclined with respect to the longitudinal direction of the

weight portions

75 and 102, it is possible to receive an impact in an oblique direction. , 102 can be elastically displaced in the longitudinal direction (projection direction of the measurement unit 26). Therefore, the impact transmitted from the measurement unit 26 or the

casings

12 and 100 is more reliably absorbed in the protruding direction of the measurement unit 26, and the impact resistance of the measurement unit 26 can be further enhanced. Furthermore, the battery part 46 can suppress that the battery 18 is dropped or the battery housing case 74 is brought into contact with surrounding members and damages other members.

Of course, the present invention is not limited to the above-described embodiment, and various configurations can be adopted without departing from the gist of the present invention. For example, the component measuring apparatus according to the present invention may be applied to an apparatus for measuring a urine component which is a body fluid, or may be applied as an apparatus for measuring a component such as waste water or industrial water in addition to the body fluid. Good.

Claims

A housing (12, 100);
A measuring part (26) protruding from the housing (12, 100) and capable of detecting a component in the liquid;
A component measuring device (10, 10A, 10B) having a weight part (75, 102) configured relatively heavy among members housed in the housing (12, 100),
Provided in the housing (12, 100), and provided with an impact absorbing portion (70, 76, 104) for absorbing an impact acting on the measuring portion (26),
The impact absorbing portion (70, 76, 104) is elastically deformed when the component measuring device (10, 10A, 10B) is dropped, so that the measuring portion (26) and the weight portion (75, 102) are relative to each other. A component measuring device (10, 10A, 10B) characterized by being displaced.
In the component measuring apparatus (10, 10A) according to claim 1,
The shock absorbing portion (70, 76, 104) includes an elastic member (76, 104) that elastically connects the housing (12, 100) and the weight portion (75, 102). A component measuring apparatus (10, 10A).
In the component measuring apparatus (10, 10A) according to claim 2,
The elastic member (76, 104) is disposed on at least one side of the weight part (75, 102) corresponding to the protruding direction of the measuring part (26) protruding from the housing (12, 100), The component measuring device (10, 10A), characterized in that the component measuring device (10, 10A) has an extending portion (94, 106) extending inclining with respect to the protruding direction and connected to the housing (12, 100).
In the component measuring device (10) according to claim 1,
The said weight part (75) contains the battery part (46) which accommodated the battery (18) which can supply electric power to the said component measurement apparatus (10). The component measurement apparatus (10) characterized by the above-mentioned.
In the component measuring apparatus (10, 10B) according to any one of claims 1 to 4,
The shock absorbing part (70, 76, 104) is a buffer member (52) provided between the opposite surface of the measuring part (26) in the protruding direction and the continuous part (52) connected to the housing (12, 100). 70). The component measuring apparatus (10, 10B) characterized by including.
In the component measuring device (10, 10B) according to claim 5,
The said buffer member (70) is provided so that the circumference | surroundings of the detection circuit (68) arrange | positioned at the said opposite surface may be enclosed. The component measuring device (10, 10B) characterized by the above-mentioned.