JP2012095949A - Body fluid component measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that since a mechanism for ejecting a test piece is provided in a usual body fluid component measuring device, an eject lever or a coil spring is necessary, which uneconomically increases the number of part items or assembling manhours.SOLUTION: A body fluid component measuring device 1 is provided with a test piece attaching part 17 to which the test piece 30 for measuring a body fluid component is attached. The device 1 includes a grip piece 22 which is provided as a part of a casing 2 and can grip the test piece 30 forming a part of the test piece attaching part 17 and a supporting point part 45 which is provided in a part of the casing opposed to the grip piece 22 and abuts on the grip piece 22. The grip piece 22 has an input part 23 which is provided nearer to a base end side than to the supporting point part 45 and has flexibility. The input part 23 is pressed to rotate the grip piece 22 with the supporting point part 45 as a center to release the grip of the test piece 30.

Description

  The present invention relates to a bodily fluid component measuring device that measures the amount and property of a predetermined component in a body fluid such as blood sugar level in blood, and in particular, a part of a housing is made flexible so that the flexibility It is related with the humor component measuring device comprised so that a test piece could be discharged without touching by deforming the case part which has this.

In order to detect a predetermined component in a body fluid and measure the amount and property of the predetermined component, various body fluid component measuring devices are used. As an example of such a body fluid component measuring device, for example, a blood glucose meter that measures glucose concentration in blood can be cited.
In recent years, there has been an increasing demand for a blood glucose meter capable of discarding a used test piece without coming into contact with blood due to an increase in safety awareness.

  In the conventional blood glucose meter, the tester himself / herself directly grips the used test piece by hand, and the test piece is pulled out from the test piece mounting portion and discarded. Therefore, the hand touches the blood adhering to the used test piece, which is not preferable from the viewpoint of hygiene. A measuring device having a discharging mechanism that discharges a test piece without touching it is also provided. However, the discharging mechanism used in this measuring device uses components such as a spring, a pushing member, and a knob. For this reason, there are problems such as an increase in the number of parts, which is uneconomical.

  As an example of a conventional body fluid component measuring device, there is a measuring device for measuring a sample such as a body fluid as described in Patent Document 1, for example. This measuring apparatus is a measuring apparatus that is equipped with a sensor on which a sample is spotted and measures the sample, and is characterized by including a discharge mechanism that discharges the sensor from the measuring apparatus.

JP 2003-114213 A

  However, in the case of the above-described conventional example, a slide knob, a resin spring, or the like is used, and the number of parts is also increased, which is disadvantageous in terms of cost.

  The object of the present invention is to reduce the manufacturing cost by reducing the number of parts such as eject levers and coil springs constituting the mechanism for discharging the test piece and reducing the number of assembly steps in the conventional body fluid component measuring apparatus as described above. The purpose is to reduce this.

  The present invention relates to a body fluid component measuring apparatus including a test piece mounting portion on which a test piece for measuring a body fluid component is mounted. Provided as a part of the body of the body fluid component measuring device and constituting a part of the test piece mounting portion, the gripping piece capable of gripping the test piece, and the part of the housing facing the gripping piece And a fulcrum portion that contacts the gripping piece. The gripping piece is equipped with a flexible input part provided on the base end side from the fulcrum part. By pressing the input part, the gripping piece is rotated around the fulcrum part to release the test piece. It is characterized by doing so.

  According to the present invention, in a body fluid component measuring apparatus such as a blood glucose meter, a part of the casing is made flexible so that the test piece can be discharged by bending and deforming the flexible casing. By comprising, the test piece after use can be discharged | emitted hygienically and processed, without increasing a number of parts.

It is a perspective view which shows the 1st Example of the bodily fluid component measuring apparatus of this invention. FIG. 2 is a perspective view in which a central portion of the body fluid component measuring device shown in FIG. 1 is longitudinally cut along a longitudinal direction. It is explanatory drawing which expanded the cross section of the principal part of the bodily fluid component measuring apparatus shown in FIG. It is a perspective view which shows the 2nd Example of the bodily fluid component measuring apparatus of this invention. FIG. 5 is a perspective view in which a central portion of the body fluid component measuring device shown in FIG. 4 is longitudinally cut along the longitudinal direction. It is explanatory drawing which expanded the cross section of the principal part of the bodily fluid component measuring apparatus shown in FIG. It is explanatory drawing which shows the state before discharge | emission of the test piece by the bodily fluid component measuring apparatus shown in FIG. It is explanatory drawing which shows the state at the time of discharge | emission of the test piece by the bodily fluid component measuring apparatus shown in FIG. The 3rd Example of the bodily fluid component measuring apparatus of this invention is shown, and it is the perspective view which cut the center part in the vertical direction along the longitudinal direction. It is explanatory drawing which expanded the cross section of the principal part of the bodily fluid component measuring apparatus shown in FIG. It is explanatory drawing which shows the state before discharge | emission of the test piece by the bodily fluid component measuring apparatus shown in FIG. It is explanatory drawing which shows the state at the time of discharge | emission of the test piece by the bodily fluid component measuring apparatus shown in FIG.

  Hereinafter, an example of an embodiment for carrying out the body fluid component measurement device of the present invention will be described with reference to the drawings. FIGS. 1-3 is a figure which shows the blood glucose meter 1 which concerns on the 1st Example of the bodily fluid component measuring apparatus of this invention. 4 to 8 are views showing a blood glucose meter 100 according to a second embodiment of the body fluid component measuring apparatus of the present invention. Furthermore, FIGS. 9-12 is a figure which shows the blood glucose meter 200 which concerns on 3rd Example of the bodily fluid component measuring apparatus of this invention. The present invention is not limited to the blood glucose meter 1, 100, 200 shown in the first to third embodiments.

  The blood glucose meter 1 shown in FIGS. 1 to 3 is an in-hospital product suitable for use by medical personnel such as doctors and nurses mainly for patients hospitalized in medical facilities. However, it goes without saying that the blood glucose meter 1 may be used by a patient at home or the like. The blood glucose meter 1 can be used by a doctor, a nurse or the like by holding it like a mobile phone or by placing it on a desk or a medical table. The main function of the blood glucose meter 1 is to measure the blood glucose level in the blood and manage the measurement data. In addition, the blood glucose meter 1 has functions such as confirmation of the patient's name and medicine to be administered, and accuracy management of the device. It may be added.

  As shown in FIGS. 1 and 2, the blood glucose meter 1 displays a housing 2 formed of a hollow container, a measurement unit 3 built in the housing 2, input items, confirmation items, measurement results, and the like. The display unit 4 includes a control unit 5 that controls the operation of the measurement unit 3 and the display unit 4, a power supply unit that supplies power to the display unit 4, the control unit 5, and the like.

  The housing 2 is formed as a rectangular parallelepiped container having an elongated trunk so that a person can easily hold and operate the operation button of the operation unit with one hand. The housing 2 includes a container body 7 having an opening at the back, which is one end face in the longitudinal direction of the rectangular parallelepiped, and a lid 8 that closes the back opening of the container body 7. Thus, the lid body 8 is fixed to the container body 7. As a material of the housing 2, for example, ABS resin (acrylonitrile / butadiene / styrene resin) or polycarbonate (PC) can be used. However, the present invention is not limited to this, and various engineering plastics having a certain degree of strength and capable of exhibiting appropriate flexibility (bending deformation) can be used.

  On the back side of the upper surface of the housing 2, a display unit 4 that displays the blood sugar level calculated by the control unit 5 based on information measured by the measurement unit 3 is provided. The display unit 4 has an opening window 11 having a rectangular shape penetrating the upper surface of the container body 7 and extending in the longitudinal direction. The opening window 11 has a transparent panel cover having a shape corresponding to the opening window 11. 12 is mounted. A display panel 13 capable of displaying characters, graphics and the like is disposed on the inner surface of the panel cover 12. The display panel 13 is configured by, for example, a liquid crystal display or an organic EL display.

  The control unit 5 includes a storage device such as a microcomputer, ROM, and RAM, and a wiring board 15 on which a predetermined wiring pattern is formed. And the control part 5 is comprised by mounting a microcomputer and other electronic components in the predetermined position of the wiring board 15. FIG. The control unit 5 executes predetermined arithmetic processing based on a measurement signal supplied from the measurement unit 3 described later and outputs a control signal.

  The power supply unit (not shown) includes a battery as a portable power supply, and the operation of the measurement unit 3, the control unit 5 and the like is executed by the power of the battery, and the display of the display unit 4 is controlled. Yes. An operation unit (not shown) includes a power switch for turning on / off the power, an operation button for inputting an information signal, a command signal, and the like. Note that a barcode reader unit may be provided in the housing 2 so that patient ID information and the like can be read.

  In addition, a test piece mounting portion 17 for mounting a test piece 20 for collecting blood is provided at the distal end of the casing 2 in the longitudinal direction. The test piece mounting portion 17 includes a ring-shaped cylindrical portion 18 having a circular cross-sectional shape protruding forward from the front surface of the housing 2, and the test piece 30 is detachably mounted on the cylindrical portion 18. Is done. The cylindrical portion 18 is divided into two in the diameter direction by a cutting portion 21 extending in the axial direction. The cutting portion 21 extends from the base end of the cylindrical portion 18 in the longitudinal direction of the container main body 7, and is a slit that is notched linearly to the middle portion of the container main body 7. By providing this cutting part 21, a grip piece 22 is formed on a part of the container body 7.

  A portion of the gripping piece 22 close to the base end of the cutting portion 21 is an input unit 23 that is pressed and elastically deformed to displace the gripping piece 22. The input unit 23 constitutes a part of the housing 2 and is formed so as to be thin and flexible compared to the portion of the housing 2 other than the input unit 23. The input portion 23 may be formed so as to slightly bulge to the outer surface side, and may be provided so as to be deformed to the inner surface side by being pressed and buckled or reversed. Moreover, the input part 23 may be formed with the flexible material different from the other part of the housing | casing 2, for example, polyethylene (PE), polypropylene (PP), ethylene-vinyl acetate copolymer (EVA) ), A styrene-based or olefin-based thermoplastic elastomer, or a composite material thereof. In this case, the input unit 23 and the other part of the housing 2 can be integrally formed by two-color molding.

  At the tip of the gripping piece 22, a claw part 24 for gripping the test piece 30 is provided, and the claw part 24 is formed as a semi-cylindrical part forming the upper half of the cylindrical part 18. The test piece 30 detachably attached to the cylindrical portion 18 including the claw portion 24 has a configuration as shown in FIGS. That is, the test piece 30 includes a base portion 31 formed in a disk shape, a nozzle portion 32 formed on one surface of the base portion 31, and a cylindrical shaft portion formed on the other surface of the base portion 31. 33. The outer diameter of the base portion 31 is formed to be approximately the same as the outer diameter of the cylindrical portion 18. The nozzle portion 32 is erected at the center of the base portion 31, and a sampling hole 34 that penetrates in the axial direction and opens on the surface on the cylinder shaft portion 33 side is provided at the center portion. The tip of the nozzle portion 32 is formed in a tapered shape, and a concave groove is provided at the tip for facilitating aspiration of blood, which is a specific example of the body fluid that is a specimen.

  The cylindrical shaft portion 33 of the test piece 30 is formed in a size that fits into the hole of the cylindrical portion 18, and is configured such that the cylindrical portion 18 is closed by the base portion 31. Furthermore, a plurality of engaging claws (four in this embodiment) 35 made of an elastic piece are provided at the tip of the cylindrical shaft portion 33 by providing a notch. By fitting the tube shaft portion 33 into the hole of the cylindrical portion 18, the test piece 30 is elastically held by the test piece mounting portion 17 by the engagement claw 35. The engaging claw 35 is formed as an arc-shaped convex portion that is continuous in the circumferential direction, and a convex portion having a mountain shape for increasing frictional resistance is provided on the outer peripheral surface thereof.

  The test piece 30 is a disposable product and is packaged in a package (not shown). The sampling hole 34 of the test piece 30 is formed to have a sufficiently small diameter so that blood can be sucked up by capillary action so that the blood in contact with the tip of the nozzle portion 32 can move to the opening on the tube shaft portion 33 side. It has become. A test paper 36 into which blood that has moved through the collection hole 34 is stored is stored in a test paper storage portion formed inside the tube shaft portion 33 of the test piece 30. By irradiating the test paper 36 with predetermined light emitted from the optical measurement unit 40, components in the blood can be measured.

  Examples of the material of the test paper 36 include polyethersulfone. Examples of the reagent pre-impregnated in the test paper 36 include glucose oxidase (GOD), peroxidase (POD), 4-aminoantipyrine, N-ethyl N- (2-hydroxy-3-sulfopropyl), and the like. Mention may be made of color formers. The reagent may contain a predetermined buffer.

  The optical measurement unit 40 (measurement unit) is a device that irradiates light to the test paper 36 infiltrated with blood and receives the reflected light. The optical measuring unit 40 includes a holder 41 attached to the bottom side of the housing 2, and a light emitting element and a light receiving element held by the holder 41. The light emitting element is made of, for example, a light emitting diode, and the light receiving element is made of, for example, a photodiode.

  The light emitting element and the light receiving element of the optical measuring unit 40 are held inside a holder 41 having a passage extending to the end face on the test paper 36 side. The light emitted from the light emitting element is applied to the test paper 36 through the passage, and the light reflected by the test paper 36 is guided to the light receiving element, and is photoelectrically converted by the light receiving element. Then, an analog signal corresponding to the amount of received light is output from the light receiving element to the control unit 5. The holder 41 has a block-like base portion 41a and a cylindrical shaft portion 41b formed continuously on the front side of the base portion 41a. An irradiation port 37 for irradiating one test paper 36 with light of two types of wavelengths is opened in the shaft portion 41b.

  The optical measurement unit 40 is disposed inside the cylindrical portion 18 and the gripping piece 22. A ring-shaped space portion is formed between the shaft portion 41 b of the holder 41 and the cylindrical portion 18. The cylindrical shaft part 33 of the test piece 30 is detachably inserted into a ring-shaped space formed in the cylindrical part 18. This space portion constitutes a test piece mounting portion that can removably support the test piece (chip) 30.

  The control unit 5 is provided on the wiring board 15 on the proximal end side of the holder 41 that holds the optical measurement unit 40. The control unit 5 is electrically connected to the optical measurement unit 40 via a wiring pattern provided on the wiring board 15, and causes the light emitting element of the optical measurement unit 40 to emit light at an appropriate timing and is supplied from the light receiving element. The analog signal is converted into a digital signal by an A / D converter (not shown). Further, the control unit 5 performs a predetermined calculation process based on the digital signal of the amount of received light, and calculates the blood sugar level in the blood. Then, the calculated blood glucose level is displayed on the display panel 13 to inform the measurer.

  The holder 40 is provided with a fulcrum portion 45 for rotating the grip piece 22 in accordance with the pressing operation of the input portion 23. The fulcrum part 45 is disposed on the upper surface of the holder 40 at an intermediate position between the claw part 24 of the gripping piece 22 and the input part 23. The fulcrum portion 45 is preferably formed as a convex portion that contacts the inner surface of the gripping piece 22 in a state where the test piece 30 is gripped by the gripping piece 22, and the convex portion is a direction orthogonal to the direction in which the gripping piece 22 extends. It may be formed as a ridge extending in the right direction, or may be a plurality of protrusions formed with appropriate gaps in the orthogonal direction. Furthermore, the fulcrum portion 45 is preferably a dome shape having a semicircular cross section with the upper surface curved in an arc shape in consideration of the rotation of the gripping piece 22 during elastic deformation. It is good also as a shape.

  Although not shown in the figure, a packing is attached to the outer peripheral portion of the holder 41 in the housing 2 and the space between the holder 41 and the control unit 5 is sealed in a liquid-tight manner, so that the specimen, water, etc. Intrusion can be prevented. Moreover, the blood glucose meter 1 can be wiped clean or washed with water by interposing a packing at the fitting portion between the container body 7 and the lid body 8 and sealing it in a liquid-tight manner.

  The blood glucose meter 1 having such a configuration can be assembled as follows, for example. Since one end of the container body 7 in the longitudinal direction is opened and the lid 8 is fitted to the opening, the optical measurement unit 40 and the control unit 5 are inserted through the opening. Thereafter, the lid 8 closes the opening and tightens it with a fixing screw, so that it can be easily assembled.

  Moreover, the blood glucose meter 1 can be used as follows. FIG. 1 shows a normal use state of the blood glucose meter 1, which is used by grasping the housing 2 so as to be grasped lightly with one hand.

  In the measurement, first, a fingertip is punctured with a dedicated puncture device, and a small amount of blood (for example, about 0.3 to 1.5 μL) is allowed to flow out from the puncture portion onto the skin. The tip of the nozzle portion 32 of the test piece 30 attached to the tip of the blood glucose meter 1 is brought into contact with a small amount of blood on the fingertip. As a result, blood enters the collection hole 34 of the nozzle portion 32, is sucked by capillary action, flows inward, and reaches the central portion of the test paper 36 accommodated in the tube shaft portion 33. The blood that has reached the test paper 36 soaks into the test paper 36 from its surface and spreads radially outward. Simultaneously with the development of the blood, the glucose in the blood and the reagent carried on the test paper 36 start to react and color according to the amount of glucose. The blood glucose level can be determined by measuring the color of the colored test paper and measuring the color intensity.

  When the test piece 30 is ejected from the test piece mounting portion 17 after the measurement is completed, for example, the casing 2 is gripped by four fingers and palms except for the thumb, and the thumb is aligned with the input portion 23 and input. The part 23 is pressed. At this time, the test piece mounting part 17 has a gripping piece 22 which is made flexible by providing a cutting part 21 in the container body 7, and an input part 23 is provided at the base of the gripping piece 22. Since the root portion is configured to be pressed, and the fulcrum portion 45 is provided between the claw portion 24 at the tip and the input portion 23, the input portion 23 is set to a predetermined external force as shown in FIG. When pressed with F, the gripping piece 22 is elastically deformed in a V shape around the input portion 23.

  As a result, the distal end side of the grip piece 22 is rotated clockwise in FIG. 3 about the fulcrum portion 45. As a result, the claw portion 24 holding the upper half of the cylindrical shaft portion 33 of the test piece 30 mounted on the test piece mounting portion 17 is separated from the cylindrical shaft portion 33, and the test piece 30 is locked by the holding piece 22. Canceled. Therefore, the test piece 30 is easily detached from the test piece mounting portion 17. Therefore, the test piece 30 can be easily detached from the test piece mounting portion 17 by directing the blood glucose meter 1 downward with the test piece 30 facing downward, by the weight of the test piece 30 or by shaking lightly in the vertical direction. Can be disposed of in a waste container.

  In this case, the operator who operates the blood glucose meter 1 can separate the test piece 30 from the blood glucose meter 1 and discard it by one-hand operation while holding the blood glucose meter 1 with one hand. Accordingly, the disposal of the test piece 30 can be performed hygienically and easily without touching the test piece 30.

  4 to 8 are views showing a blood glucose meter 100 according to a second embodiment of the present invention. This blood glucose meter 100 is provided with a test strip discharge mechanism 120 that automatically releases the test strip 130 simultaneously with releasing the grip of the test strip 130 by bending and deforming a part of the housing 102.

  The blood glucose meter 100 shown in this embodiment is different from the blood glucose meter 1 shown in the first embodiment, and measures the blood glucose level by electrochemical means. That is, the blood glucose meter 100 is equipped with an electrochemical sensor for measuring components in the blood, and can measure the blood glucose level based on the current value obtained from the reaction between the collected blood component and the reagent. It is a component measuring device.

  As shown in FIGS. 4 and 5, the blood glucose meter 100 includes a housing 102 having a lower case 107 and an upper case 108. The lower case 107 is a shallow container having a substantially rectangular shape opened on the upper surface, and a hook-like portion 109 protruding in the longitudinal direction is provided at the center of the front surface, which is one surface of the lower case 107 in the longitudinal direction. It has been. An upper case 108 having a flat plate shape is superimposed on the lower case 107. The upper case 108 is fixed to the lower case 107 by a fixing screw (not shown).

  The hook-shaped portion 109 of the lower case 107 is a convex portion having a U-shaped cross-section and opened upward, and the upper surface opening portion projects into a tongue-like shape provided in the upper case 108 and has flexibility. It is closed by the gripping piece 122. The gripping piece 122 is given flexibility by making a part of the base part thinner than the other part to weaken the strength. A claw portion 124 that presses and fixes a portion close to the base end of the test piece 130 is provided at the distal end of the grip piece 122. In addition, a thin portion provided at the base portion of the grip piece 122 serves as an input unit 123 for bending and deforming the grip piece 122. Note that the input unit 123 may be formed by integral molding using a member having flexibility different from that of the other parts of the gripping unit 122.

  As shown in FIG. 6, in order to cause the gripping piece 122 to bend and deform, fulcrum portions 145 and 145 including two protrusions are provided on the inner surface of the hook-shaped portion 109. The two fulcrum portions 145 and 145 are arranged at a substantially intermediate portion in the longitudinal direction of the bowl-shaped portion 109 with a predetermined gap in the width direction intersecting with the longitudinal direction. And the upper end part of each fulcrum part 145 is formed as a circular-arc-shaped curved-surface part in order to make the bending deformation of the holding piece 122 easy. In addition, a front surface portion 109a having a rectangular entrance / exit 146 through which the test piece 130 is detachably inserted is provided at the center of the front end portion of the hook-shaped portion 109 in the longitudinal direction.

  The height of the front surface portion 109 a of the bowl-shaped portion 109 is set to the same height as the height of the fulcrum portion 145. As a result, in the natural state before the gripping piece 122 is bent and deformed, the lower surface of the gripping piece 122 abuts only the upper end surfaces on both sides of the front surface portion 109a and the two fulcrum portions 145 and 145, thereby opening the upper surface of the hook-shaped portion 109. It is comprised so that a part may be closed. At this time, the claw portion 124 provided at the tip of the grip piece 122 is engaged with the entrance / exit 146 provided in the front surface portion 109 a of the hook-shaped portion 109, and the claw portion 124 places the test piece 130 on the bottom surface of the hook-shaped portion 109. Grab as if pressing. A guide groove 147 for guiding the test piece 130 is provided on the bottom surface of the bowl-shaped portion 109 continuously to the entrance / exit 146.

  The guide groove 147 has the same width as that of the test piece 130. The measuring portion 103 is disposed inside the guide groove 147 inside the hook-shaped portion 109. The measurement unit 103 includes a terminal block 150 having a plurality of conductive terminals 151 at the tip. The terminal block 150 has a T-shaped planar shape, and is fixed to the hook-shaped portion 109 in a state where the protruding portion from which the conductive terminal 151 protrudes extends in the longitudinal direction of the hook-shaped portion 109. . Two fulcrum portions 145 and 145 are arranged on both sides of the tip of the terminal block 150 with a predetermined gap.

  The tips of the plurality of conductive terminals 151 are formed to be bent 180 degrees downward, and are configured so that the tips of the test piece 130 inserted from the entrance / exit 146 can be easily inserted. The plurality of conductive terminals 151 can be elastically contacted with the base end portion of the test piece 130, and the distal end portion of the test piece 130 is inserted under the plurality of conductive terminals 151, whereby the electrode terminals of the test piece 130 are provided. In contrast, each conductive terminal 151 is electrically connected. One end of the cable line 152 is connected to the terminal block 150, and the other end of the cable line 152 is connected to the connector 154 of the control unit 105. Each conductive terminal 151 is biased toward the hook-shaped portion 109 and has a function of sandwiching and holding the test piece 130 with the hook-shaped portion 109.

  As shown in FIG. 5, the connector 154 is mounted on the control unit wiring board 155 housed in the housing 102 and is electrically connected to a predetermined wiring pattern provided on the wiring board 155. ing. A display panel 113 forming a display unit is disposed above the wiring substrate 155. The display panel 113 is integrally formed by being joined to the inner surface of the panel cover 112 attached to the opening window 111 provided in the upper case 108.

  The control unit 105 includes a storage device such as a microcomputer, ROM, and RAM, and a predetermined wiring pattern, and is provided on the wiring board 155. The control unit 105 is configured by mounting a microcomputer and other electronic components at predetermined positions on the wiring board 155. The control unit 105 and the measurement unit 103 are electrically connected, and based on the measurement signal supplied from the measurement unit 103, the control unit 105 executes a predetermined calculation process and outputs a predetermined control signal. The upper case 108 is provided with a power switch 114a and an operation button 114b of the operation unit 114.

  Further, a leaf spring 160 showing a specific example of a test piece pushing mechanism for pushing the test piece 130 outward from the entrance / exit 146 is provided inside the hook-shaped portion 109. The plate spring 160 is formed as a rectangular frame-shaped plate material. On one side in the longitudinal direction of the leaf spring 160, a pressing portion 160a that contacts the test piece 130 and presses the test piece 130 is provided. The pressing portion 160 a is provided with a notch portion 161 for avoiding contact with the conductive terminal 151. This notch portion 161 prevents the pressing portion 160 a from coming into contact with the plurality of conductive terminals 151 even when the test piece 130 is pushed out by the leaf spring 160.

  Also, as shown in FIGS. 6 to 8, the leaf spring 160 is formed in a crank shape as a whole by curving two portions in the longitudinal direction in the plate thickness direction to provide a mountain fold 160b and a valley fold 160c. Has been. That is, the leaf spring 160 has a mountain fold 160b provided on the side opposite to the pressing portion 160a and a valley fold 160c provided on the pressing portion 160a side. The leaf spring 160 is attached to the terminal block 150 so that the end on the valley fold 160 c side faces the guide groove 147 and the end on the mountain fold 160 b is placed on the upper surface of the terminal block 150. ing. At this time, the convex portion side of the terminal block 150 is fitted into a central square hole provided in the leaf spring 160, thereby restricting the movement of the leaf spring 160 in the width direction and allowing forward and backward movement only in the longitudinal direction. I have to.

  The blood glucose meter 100 having such a configuration can be assembled as follows, for example. First, the control unit 105 is assembled by attaching the wiring board 155 and the like to the lower case 107. Next, the terminal block 150 is attached to a predetermined position of the hook-shaped portion 109, and then the leaf spring 160 is attached to the terminal block 150. Then, the wiring board 155 and the terminal block 150 are electrically connected by the cable line 152.

  Next, the display panel 113 and the like are attached to the upper case 108. Then, the display panel 113 and the wiring board 155 are electrically connected. Thereafter, the upper case 108 is overlaid on the lower case 107 and fixed with a fixing screw (not shown). Thereby, the assembly work of the blood glucose meter 100 is completed.

  The blood glucose meter 100 having such a configuration can be used as follows, for example. First, the test piece 130 is attached to the test piece mounting portion 117 of the blood glucose meter 100. That is, one end of the test piece 130 is inserted into the entrance / exit 146 of the blood glucose meter 100, and the base end portion of the test piece 130 is inserted under the conductive terminal 151 as shown in FIGS. 4 to 7. Thereby, the blood glucose level can be measured.

  Therefore, blood to be measured is supplied to a blood collection unit 131 provided at the tip of the test piece 130. The blood travels through the capillary passage of the test piece 130 and moves to the reagent installation section where the reagent is provided, and a signal corresponding to the amount of glucose is output by the enzyme reaction, and the blood glucose level is calculated by the control unit 105 based on the signal. The blood glucose level is displayed on the display panel 113.

  When the test piece 130 is ejected from the test piece mounting portion 117 after the measurement is completed, for example, the casing 102 is gripped by four fingers and the palm excluding the thumb, and the thumb is aligned with the input unit 123 and the input is performed. The part 23 is pressed. As a result, the grip piece 122 of the housing 102 changes from the state shown in FIG. 7 to the state shown in FIG. 8, so that the test paper 130 can be automatically discharged from the test piece mounting portion 117 to the outside.

  FIG. 7 shows a state in which the test piece 130 is inserted from the entrance / exit 146 and mounted on the test piece mounting portion 117. At this time, when the test piece 130 is inserted to a predetermined position in the guide groove 147, the plurality of conductive terminals 151 are pressed against the electrode terminals on the upper surface of the base end portion of the test piece 130. At this time, the claw portion 124 of the grip piece 122 is in a state of pressing the test piece 130. The test piece 130 is fixed by pressure contact with the conductive terminal 151 and pressing by the claw portion 124. At this time, the mountain fold 160 b of the leaf spring 160 is in contact with the inner surface of the gripping piece 122. In addition, when the leaf | plate spring 160 can move smoothly back and forth even if there is no valley | folding part 160c, it can be set as the leaf | plate spring without the valley | folding part 160c. Further, the mountain-folded portion 160 b of the leaf spring 160 may be curved toward the gripping piece 122, and may be in light contact with the inner surface of the gripping piece 122.

  From the state shown in FIG. 7, an external force is applied to the input unit 123 to cause the gripping piece 122 to bend and deform inward. Then, since the input portion 123 of the grip piece 122 has a lower strength than other portions, that is, is configured to be thin, only the input portion 123 is greatly bent and deformed as shown in FIG. At this time, the distal end side of the gripping piece 122 from the input portion 123 is supported from below by a fulcrum portion 145 provided in the bowl-shaped portion 109, and therefore the distal end side of the gripping piece 122 is centered on the fulcrum portion 145 as shown in FIG. In the clockwise direction.

  As a result, the claw portion 124 provided at the tip of the gripping piece 122 is rotated outward so as to open the entrance / exit 146, and the force pressing the test piece 130 against the guide groove 147 is released. In conjunction with this, the leaf spring 160 is elastically deformed so that the mountain fold 160b is straight. As a result, the pressing portion 160a slides toward the entrance / exit 146 as much as the leaf spring 160 becomes longer in the longitudinal direction, and the test piece 130 is pushed out. Thereby, the base end part of the test piece 130 is detached from the conductive terminal 151, and the holding force by the conductive terminal 151 is also released. As a result, since all the forces for holding the test piece 130 are released, the test piece 130 is brought into a free state and is automatically discharged by being pushed out by the leaf spring 160.

  After the test piece 130 is discharged, the external force applied to the input unit 123 is released, so that the housing 102 is returned to the original state by the restoring force of the gripping piece 122 and the spring force of the leaf spring 160.

  In the second embodiment, the test piece 130 is pushed out using the leaf spring 160. However, even if the leaf spring 160 is not provided, if the pressing force of the conductive terminal 150 to the test piece 130 is set to be sufficiently weak, when the holding of the gripping piece 122 by the claw portion 124 is released, the holding weight 122 is turned downward to reduce its own weight. Thus, the test piece 130 can be detached.

  9 to 12 are views showing a blood glucose meter 200 according to a third embodiment of the present invention. In the blood glucose meter 200 shown as the third embodiment, a partial structure of the blood glucose meter 100 according to the second embodiment is changed, the conductive terminal 251 is elastically deformed by the grip piece 122, and the test piece 130 is held. In this configuration, the holding force of the terminal 251 is released. The blood glucose meter 200 according to the third embodiment is different from the blood glucose meter 100 in that the leaf spring 160 is not used and the tip end side of the conductive terminal 251 is locked to the claw portion 124. Therefore, in the blood glucose meter 200, the same parts as those in the second embodiment are denoted by the same reference numerals, and the duplicate description is omitted.

  As shown in FIG. 10, the conductive terminal 251 includes a contact part 251 a that is in contact with the test piece 130, a fixed part 251 b that is continuous on one side of the contact part 251 a, and the other side of the contact part 251 a. And a continuous fixing portion 251c. The contact portion 251a is formed in a U-shape that protrudes downward. The fixing portion 251b extends in the horizontal direction and is fixed to the terminal block 150. The fixing portion 251c is formed in an L shape, is fixed to the back side of the claw portion 124 with a vertical portion raised upward, and follows the rotation of the claw portion 124. Other configurations are the same as those in the above embodiment.

  The blood glucose meter 200 shown in this embodiment can be used as follows, for example. In addition, since the operation | work process which measures a blood glucose level is the same as that of the said Example, the description is abbreviate | omitted and the case where the test paper 130 is discharged | emitted is demonstrated.

  When the test piece 130 is ejected from the test piece mounting portion 117 after the measurement is completed, for example, the casing 102 is gripped by four fingers and the palm excluding the thumb, and the thumb is aligned with the input unit 123 and the input is performed. The part 23 is pressed. As a result, the grip piece 122 of the housing 102 changes from the state shown in FIG. 11 to the state shown in FIG. 12, so that the test paper 130 can be discharged from the test piece mounting portion 117 to the outside.

  FIG. 11 shows a state in which the test piece 130 is inserted from the entrance / exit 146 and attached to the test piece attaching portion 117. At this time, when the test piece 130 is inserted to a predetermined position in the guide groove 147, the contact portions 251 a of the plurality of conductive terminals 251 are pressed against the upper surface of the base end portion of the test piece 130. At this time, the test piece 130 is pressed by the claw portion 124 of the gripping piece 122.

  From the state shown in FIG. 11, an external force is applied to the input unit 123 to bend and deform the gripping piece 122 inward. Then, since the input portion 123 of the grip piece 122 is set to be weaker than the other portions, only the input portion 123 is greatly bent and deformed as shown in FIG. At this time, the distal end side of the gripping piece 122 from the input portion 123 is supported from below by a fulcrum portion 145 provided in the bowl-shaped portion 109, and therefore the distal end side of the gripping piece 122 is centered on the fulcrum portion 145 as shown in FIG. In the clockwise direction.

  As a result, the claw portion 124 provided at the tip of the gripping piece 122 is rotated outward so as to open the entrance / exit 146, and the force pressing the test piece 130 against the guide groove 147 is released. At the same time, the engaging portion 251c of the conductive terminal 251 fixed to the back surface of the claw portion 124 is pulled upward. As a result, the entire conductive terminal 251 is lifted, and the measurement unit 251 a is pulled away from the test piece 130. As a result, since the holding force for holding the test piece 130 is released, the test piece 130 becomes free. Therefore, by changing the posture of the blood glucose meter 100 so that the entrance / exit 146 faces downward, the test piece 130 can be dropped and discharged by its own weight.

  After the test piece 130 is discharged, the external force applied to the input unit 123 is released, so that the casing 102 returns to the original state by the restoring force of the gripping piece 122 and the spring force of the conductive terminal 251.

  According to the present invention, a part of the casing is made flexible, and the test piece can be discharged by bending and deforming the flexible part. Therefore, in the conventional apparatus, although the number of parts of discharge members, such as a knob, was many, the number of parts can be reduced and the test piece after a measurement can be discharged | emitted hygienically.

  As described above, the body fluid component measuring device of the present invention is not limited to the above-described embodiment, and various modifications and changes can be made in the configuration, shape, material, and the like without departing from the configuration of the present invention. It goes without saying that it is possible.

  In the above embodiment, blood has been described as a body fluid. However, the present invention is not limited to this, and may be lymph fluid, spinal fluid, saliva, or the like. Furthermore, glucose (blood glucose level) has been described as a component to be measured in body fluid (blood), but is not limited thereto, and examples thereof include cholesterol, uric acid, creatinine, lactic acid, hemoglobin (occult blood). These may be various alcohols, various sugars, various proteins, various vitamins, various inorganic ions such as sodium, and environmental hormones such as PCB and dioxin. Furthermore, in the above-described embodiments, the amount of the predetermined component has been described. However, the property of the predetermined component may be measured, and both the amount and the property of the predetermined component may be measured. There may be.

1,100,200 ·· Blood glucose meter (body fluid component measuring device) 2,102 ·· Case 4,104 ·· Display unit 5,105 ·· Control unit 7 ·· Body body 8 ·· Lid Body 13,113 ... Display panel 15, 115 ... Wiring board 17, 117 ... Test piece mounting part 18 ... Cylindrical part 21 ... Cutting part 22, 122 ... Holding piece 23 123 .. Input part 24, 124 .. Claw part 30, 130 .. Test piece 40 .. Optical measuring part (measuring part) 45, 145 .. Support point part 103 .. Measuring part 107. Lower case, 108 ... Upper case, 109 ... Ridge part, 120 ... Test piece discharge mechanism, 146 ... Entrance / exit, 147 ... Guide groove, 150 ... Terminal block, 151, 251 ... Conductive terminal, 160 ..Plate springs, 251a

Claims (6)

In a bodily fluid component measuring device comprising a test strip mounting portion to which a test strip for measuring a bodily fluid component is mounted,
A gripping piece that is provided as a part of the housing of the body fluid component measurement device and that constitutes a part of the test piece mounting portion and that can grip the test piece;
Provided in a portion of the housing facing the gripping piece, and having a fulcrum part contacting the gripping piece,
The gripping piece includes a flexible input portion provided on the base end side with respect to the fulcrum portion, and by pressing the input portion, the gripping piece is rotated around the fulcrum portion to perform the test. The bodily fluid component measuring apparatus characterized by releasing the gripping of the piece. The gripping piece is formed so as to be displaceable with respect to other parts by providing a cutting portion in the housing.
The bodily fluid component measuring apparatus according to claim 1, wherein a claw portion for holding the test piece is provided at a tip of the holding piece. The humor component measuring device according to claim 1 or 2, wherein the input portion of the grip piece is formed so as to be easily bent and deformed by making it thinner than other portions of the housing. The bodily fluid according to claim 1 or 2, wherein the input portion of the grip piece is formed of a flexible material different from other portions of the housing and is integrally formed with the other portions of the housing. Component measuring device. 5. A test piece push-out mechanism that is provided inside a housing of the body fluid component measurement device and is operated by a pressing operation of the input unit to push out the test piece. 5. Body fluid component measuring device. Provided inside the housing of the body fluid component measuring device, and having a conductive terminal that presses the test piece when the test piece is attached to the test piece attachment part,
2. The structure is such that pressing the input unit releases the test piece by the grip piece and releases the pressure contact of the test piece by the conductive terminal. To 4. The body fluid component measuring device according to any one of 1 to 4.