JP5157567B2 - Blood analyzer - Google Patents

Description

  The present invention relates to a blood analyzer that measures blood components using blood collected from a human body, and is a small and portable device suitable for POCT (Point of Care Testing), for example, simple The present invention relates to a blood glucose level measuring device.

  Blood analyzers that collect blood from the skin and measure blood glucose levels for diabetic patients to manage self-blood glucose are widely used. In such a blood analyzer, a disposable measurement sensor is detachably attached, and after blood from the skin is spotted on the attached measurement sensor, a reaction occurring in the sensor is transferred into the analyzer. The analysis is performed by the provided measurement circuit, and the blood glucose level and the like are displayed on the display unit.

  Such a blood analyzer generally includes a connector on which a measurement sensor is attached to and detached from a housing, a liquid crystal panel for displaying measurement results, and the like, which is disposed so as to be exposed from an opening provided in the housing. And a display panel made of a transparent member attached to the upper surface of the display unit so as to protect the display unit. In addition, an electrical circuit board that is electrically connected to the connector and the display unit to which the measurement sensor is connected is disposed inside the housing (see, for example, Patent Document 1).

  Here, a conventional display panel mounting structure will be described. The purpose of providing the display panel is to protect a display unit such as a liquid crystal displaying a measurement result from dust, foreign matter, scratches, impacts, and the like from the outside.

FIG. 7A is a front view showing a conventional blood analyzer 101, and FIG. 7B is a sectional view taken along a section FF ′ in FIG. 7A. The display unit 108 is disposed inside the housing 102 so as to be exposed from an opening provided in the housing 102. The display panel 104 is joined to the upper surface of the peripheral edge portion 203 of the opening also received by the housing 102 so that the bottom surface of the display panel 104 is supported.
JP 2006-522923 A

  In such a blood analyzer, a measurement operation such as spotting on a measurement sensor is carried out with the skin punctured with a puncture device such as a lancet and blood is exuded. Blood tends to adhere to the panel surface, the vicinity of connectors, and the like. In particular, when blood adheres between the display panel and the housing, blood may flow into the housing from the gap between the display panel and the housing.

  By the way, the display panel is attached by fixing the bottom surface of the display panel 104 to the peripheral edge portion 203 of the opening of the housing. However, there are variations in the dimensions of the display panel and the housing, and a plurality of parts are assembled in the manufacturing process. In addition, there is always a gap between the display panel and the casing.

  For this reason, when blood enters from the gap 202 existing in the display panel 104 and the housing 102, the liquid flows in the direction of the arrow as shown in FIG. It will reach the circuit board 107. As a result, problems such as display defects of the display unit 108, destruction due to a short circuit of wiring, and problems such as measurement inability have occurred.

  The connector 105 to which the measurement sensor is attached also has gaps due to variations in the mounting accuracy of the connector, the connector dimensions, the housing dimensions, or the assembly of a plurality of components in the manufacturing process. For this reason, similarly to the above, when blood adheres to the periphery of the connector, it may enter through a gap between the housing and reach an electric circuit board or the like. In such a case, there is also a problem that it is easy to cause problems such as destruction due to a short circuit of the wiring and inability to measure.

  An object of the present invention is to provide a structure that does not reach an electric circuit board or the like even if blood that has entered through the gap between the display panel and the casing or between the connector and the casing enters the inside of the housing. And

  In addition, the blood analyzer of the present invention is disposed in the housing, on the electrical circuit board for measuring the collected blood component, and on the electrical circuit board, and exposed from the opening formed in the housing. And a display unit for displaying a result measured by the electric circuit board, and further, a peripheral portion of the opening is configured to cover the display unit exposed from the opening and protect the display unit A blood analyzer comprising a display panel bonded on a housing that has a through-hole formed in a peripheral portion of an opening that supports the display panel, and is connected to the through-hole. The space is characterized in that the electric circuit board and the space provided with the display portion are separated from each other.

  According to the blood analyzer of the above configuration, blood that has entered from the gap between the display panel and the casing or the gap between the connector and the casing does not reach the display section or the electric circuit board, resulting in malfunction. There is no such thing as to wake you up.

(Embodiment 1)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a perspective view showing blood analyzer 101 according to the present embodiment, and FIG. 1B is an exploded view of upper housing 102 and lower housing 103 from blood analyzer 101 to show the inside of blood analyzer 101. It is the disassembled perspective view shown. A display unit 108 and an electric circuit board 107 exist in the blood analyzer, and an electric circuit that forms the basis of the blood analyzer including the control unit exists on the substrate. Reference numeral 104 denotes a display panel, 105 denotes a connector to which a measurement sensor is attached, and 106 denotes an operation button.

  2A is a view showing the upper body of the blood analyzer 101 of FIG. 1 with the display panel 104 removed, and FIG. 2B is a perspective view cut along AA ′ of FIG. 2A. 2C shows a main part of the AA ′ cross section of FIG. 2A (the display panel 104 is shown in order to clearly show the gap 202).

  Here, the display panel 104 and the upper casing 102 have molding variations, and a plurality of parts are assembled in the manufacturing process. The gap 202 as shown in c) always occurs.

  Here, when blood adheres to the upper part between the display panel 104 and the upper casing 102, the liquid that has entered from the gap 202 flows along the arrow shown in FIG. 108 or the substrate 107 may be reached.

  Therefore, in the present embodiment, a first recess is formed in a portion that becomes a joint between the upper housing 102 and the display panel 104. Specifically, an opening is formed in the upper casing 102 so as to expose the display unit 108, and the bottom surface of the display panel 104 is supported by the peripheral portion 203 of the opening. A recess 201 is provided on the upper surface of 203.

  As shown by the arrow in FIG. 2C, the liquid that has entered from the gap 202 between the display panel 104 and the upper housing 102 reaches the peripheral portion 203, but the blood is introduced into the concave portion 201, and the blood analyzer interior The display unit 108 or the electric circuit board 107 is not reached. Therefore, the display unit 108 and the electric circuit board 107 can be prevented from malfunctioning due to blood adhesion.

(Embodiment 2)
FIG. 3 shows a second embodiment of the present invention. 3A is a view in which the display panel 104 is removed from the blood analyzer main body 101 of FIG. 1, and FIG. 3B is a perspective view of FIG. 3A cut along BB ′. FIG. 3C is a sectional view taken along the line BB ′ in FIG. 3A (the display panel 104 is shown in order to clearly show the gap 202).

  Here, since the display panel 104 and the upper casing 102 have molding variations and a plurality of parts are assembled in the manufacturing process, the display panel 104 and the upper casing 102 are illustrated in FIG. Thus, the gap 202 is always generated. The blood that has entered from the gap 202 flows along the arrow shown in FIG. 3C and may eventually reach the internal display unit 108 or the electric circuit board 107.

  Therefore, in the second embodiment, the peripheral portion 203 of the upper casing 102 that supports the display panel 104 is provided with the inclined portion 302 that is gradually inclined toward the outer peripheral direction, and the lower end of the inclined portion 302, that is, the outermost portion of the peripheral portion 203. A recess 301 is provided on the outer periphery.

  As shown by the arrow in FIG. 3C, the liquid that has entered from the gap 202 between the display panel 104 and the upper housing 102 reaches the inclined portion 302. However, since the inclined portion 302 is inclined, the liquid is on the outer periphery. Is not introduced into the concave portion 301 of the blood analyzer and does not reach the display unit 108 or the electric circuit board 107 in the blood analyzer. Therefore, the display unit 108 and the electric circuit board 107 can be prevented from malfunctioning due to blood adhesion.

(Embodiment 3)
FIG. 4 shows a third embodiment of the present invention. 4A is a view in which the display panel 104 is removed from the blood analyzer 101 of FIG. 1, and FIG. 4B is a perspective view of FIG. 4A cut along CC ′. FIG. 4C is a sectional view taken along the line CC ′ of FIG. 4A (the display panel 104 is shown in order to clearly show the gap 202).

  Here, the display panel 104 and the upper casing 102 have molding variations, and in order to assemble a plurality of parts in the manufacturing process, the display panel 104 and the upper casing 102 are shown in FIG. As shown, the gap 202 is always generated. For this reason, blood that has entered from the gap 202 along the arrow shown in FIG. 4C flows and may eventually reach the display unit 108 and the electric circuit board 107 inside the blood analyzer.

  Therefore, in the present embodiment, the peripheral portion 203 that supports the display panel 104 in the upper housing 102 is provided with an inclined portion 302 that is gradually inclined toward the outer periphery, and the lower end of the inclined portion 302, that is, the peripheral portion 203. A through hole 401 is provided on the outermost periphery. The through-hole 401 has a structure separated from the electric circuit board 107 and the display unit 108 by a partition inside the housing. The blood that has reached the through-hole 401 finally remains in the space of the lower housing 103 as shown by the arrow in FIG. Therefore, the liquid that has entered from the gap 202 does not reach the internal display unit 108 or the substrate 107 of the electric circuit. Therefore, the display unit 108 and the electric circuit board 107 can be prevented from malfunctioning due to blood adhesion.

(Embodiment 4)
5 and 6 show a fourth embodiment of the present invention. 5A is a diagram in which the display panel 104 is removed from the blood analyzer 101 of FIG. 1, and FIG. 5B is a perspective view of the state cut along DD ′ of FIG. 5 (c) shows a cross-sectional view along DD 'in FIG. 5 (a).

  6A is a diagram in which the display panel 104 is removed from the blood analyzer 101 in FIG. 1, and FIG. 6B is a perspective view in a state cut by EE ′ in FIG. FIG. 6C shows a cross-sectional view taken along the line EE ′ of FIG.

  Here, the connector 105 to which the measurement sensor is mounted and the upper housing 102 have molding variations, and the connector 105 and the upper housing are used for mounting misalignment in the mounting process and for assembling a plurality of parts in the manufacturing process. As shown in FIG. 5C and FIG. 6C, a gap 501 is formed between the terminal 102 and the terminal 102. The gap 501 exists not only on the front surface of the connector 105 as shown in FIG. 5, but also on both sides of the connector 105 as shown in FIG.

  Therefore, blood that has entered from the gap 501 in the sensor insertion port flows into the lower housing 103 as indicated by the arrow in FIG. 5C, or flows into the lower housing 103 as indicated by the arrow in FIG. I will.

  Therefore, in the present embodiment, the partition wall 502 is provided so that the blood flowing in the lower casing does not reach the display unit 108 or the electric circuit board 107, and the storage unit 503 serving as the second recess having the gap 501 as an opening. Is forming. The flowed blood is configured to accumulate in the storage portion 503. Therefore, the liquid that has entered from the gap 501 does not reach the display unit 108 or the electric circuit board 107 inside the blood analyzer and does not cause malfunction.

  The medical blood analyzer according to the present invention is not limited to blood glucose level, lactic acid level, hemoglobin, and the like, but can be widely applied to a small and portable blood analyzer that collects blood and performs an analysis operation.

The perspective view of the blood analyzer which concerns on this Embodiment Exploded perspective view of the blood analyzer The front view which shows the blood analyzer which concerns on this Embodiment 1, the perspective view which cuts and shows the principal part, and principal part sectional drawing The front view which shows the blood analyzer which concerns on this Embodiment 2, the perspective view which cuts and shows the principal part, and principal part sectional drawing The front view which shows the blood analyzer which concerns on this Embodiment 3, the perspective view which cuts and shows the principal part, and principal part sectional drawing The front view which shows the blood analyzer which concerns on this Embodiment 4, the perspective view which cuts and shows the principal part, and principal part sectional drawing The front view in the structural example of the other blood analyzer in the same embodiment, the perspective view which cuts and shows the principal part, and principal part sectional drawing Front view and main part sectional view of a conventional blood analyzer

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Blood analyzer 102 Upper housing | casing 103 Lower housing | casing 104 Display panel 105 Connector 106 Operation button 107 Electric circuit board 108 Display part 201,301 Recessed part 202,501 Gap 203 Peripheral part 302,402 Inclined part 401 Through hole 502 Bulkhead 503 Storing Part

Claims (3)

An electrical circuit board for measuring the collected blood component in the casing, and the electrical circuit board disposed on the electrical circuit board, exposed from the opening formed in the casing, and measured by the electrical circuit board A display panel for displaying a result, and further, a display panel that is joined to a casing that forms a peripheral portion of the opening so as to cover the display part exposed from the opening and protect the display part A blood analyzer comprising:
  A through hole is provided in a peripheral portion of the opening that supports the display panel, and a space inside the housing that communicates with the through hole is separated from a space in which the electric circuit board and the display unit are provided. A blood analyzer characterized by being. The blood analyzer according to claim 1, wherein the peripheral portion is provided with an inclined surface following the through hole in a part or all of the peripheral portion. The blood analyzer according to claim 2, wherein the inclined surface is formed on the inner peripheral side of the casing with respect to the through hole, deepens in the outer peripheral direction of the casing, and continues to the through hole .

Images