KR20200014980A - Blood glucose test meter and Blood glucose test method using the same - Google Patents

Abstract

According to one embodiment of the present invention, a blood glucose monitoring meter, which is installed on the skin and which monitors a blood glucose, having a small sense of irritation comprises: an electrode unit disposed at a predetermined position on the skin and applying an electric current to the body; and a sensor unit penetrating under the skin and monitoring glucose. The electrode unit includes a positive electrode unit and a negative electrode unit. A separation distance between the end of the sensor unit and the negative electrode unit is different from a separation distance between the end of the sensor unit and the positive electrode unit.

Description

Blood glucose meter and blood glucose measurement method {Blood glucose test meter and Blood glucose test method using the same}

The present invention relates to a blood glucose meter and a method for measuring blood glucose using the same, and more particularly, to a blood glucose meter and a blood sugar measuring method using the same, which are installed on the skin to measure blood glucose.

Many diagnostic tests are routinely performed in humans to assess the amount or presence of substances in blood or other body fluids.

Diabetes is a major health concern, and treatment of type I (insulin dependent) diabetes, which is a more severe form of condition, requires one or more injections of insulin daily. Insulin controls the use of glucose or sugar in the blood and prevents hyperglycemia, which can lead to ketosis if left unfixed.

It is essential to monitor blood glucose levels frequently as a means of avoiding or at least minimizing the complications of type I diabetes. In addition, it is essential for patients with type II (non-insulin dependent) diabetes to monitor blood glucose levels periodically while controlling their status by diet and exercise.

In the conventional blood glucose monitoring method, an invasive glucose monitoring system using a glucose sensor in the form of a needle is generally used, but there are problems such as insertion pain, foreign body feeling, and infection possibility by using the needle sensor. In addition, since only a small amount of glucose which is accidentally in contact with the needle sensor is measured, there is a problem that the accuracy is lowered.

In order to compensate for the disadvantages caused by the insertion of the needle sensor described above, non-invasive blood glucose measurement methods using reverse iontophoresis have been developed. However, since the glucose measurement method using the reverse mobility electrophoresis method extracts the intercellular fluid over the skin to measure glucose, it measures a smaller amount of glucose than the invasive blood glucose measurement method using a needle sensor, and thus the accuracy is lowered. There was a problem that is much affected by the skin type and conditions (sweat, hair, etc.).

On the other hand, there is a Republic of Korea Patent No. 10-1512566 as a conventional technology related to the blood glucose meter.

The present invention is to solve the above problems, to provide a blood glucose meter and a method for measuring blood glucose using the same, which can measure blood sugar with little foreign body feeling.

The problem to be solved by the present invention is not limited to the above-described problem, the objects that are not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings. .

Blood glucose meter according to an embodiment of the present invention is installed on the skin to measure blood glucose, disposed in a predetermined position of the skin to apply an electric current in the body; And a sensor unit penetrating subcutaneously to measure glucose, wherein the electrode unit includes a (+) electrode unit and a (−) electrode unit, and a separation distance between an end portion of the sensor unit and the (−) electrode unit is measured. It is different from the separation distance between the end and the (+) electrode.

According to the blood glucose meter according to an embodiment of the present invention, there is less foreign matter and there is an advantage in that accurate blood sugar can be measured.

The effects of the present invention are not limited to the above-described effects, and effects that are not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a schematic diagram showing that the blood glucose meter is installed in the human body according to an embodiment of the present invention.
2 and 3 are schematic cross-sectional views of a blood glucose meter according to an embodiment of the present invention.
Figure 4 is a schematic cross-sectional view showing another embodiment of the blood glucose meter of the present invention.
5 is a schematic block diagram of a blood glucose meter of the present invention.
6 is a schematic flowchart of a blood glucose measurement method according to another embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may further degenerate other inventions or the present invention by adding, changing, or deleting other elements within the scope of the same idea. Other embodiments that fall within the scope of the inventive concept may be easily proposed, but they will also be included within the scope of the inventive concept.

Blood glucose meter according to an embodiment of the present invention is installed on the skin to measure blood glucose, disposed in a predetermined position of the skin to apply an electric current in the body; And a sensor unit penetrating subcutaneously to measure glucose, wherein the electrode unit includes a (+) electrode unit and a (−) electrode unit, and a separation distance between an end portion of the sensor unit and the (−) electrode unit is measured. It may be different from the separation distance between the end and the (+) electrode.

The apparatus may further include a position defining unit defining a positional relationship between the electrode unit and the sensor unit.

The electrode portion may be fixed at a predetermined position on the position defining portion, and the sensor portion may penetrate subcutaneously at a predetermined position on the position defining portion.

The position defining part may include a penetration inducing part defining a position at which the sensor part penetrates subcutaneously, and the sensor part may penetrate subcutaneously through the penetration inducing part.

In addition, the penetration guide portion may be formed as a through space.

The apparatus may further include a guide part disposed on the through space to allow the sensor part and the position defining part to be spaced apart from each other, and to guide the sensor part to penetrate subcutaneously.

In addition, the separation distance between the end of the sensor portion and the (-) electrode portion may be smaller than the separation distance between the end of the sensor portion and the (+) electrode portion.

In addition, an end portion of the sensor part may be disposed in a footprint occupied by the negative electrode part.

Blood glucose measurement method according to another embodiment of the present invention may be a method for measuring blood glucose using the blood glucose meter.

Components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

1 is a schematic diagram showing that the blood glucose meter is installed in the human body according to an embodiment of the present invention.

2 and 3 are schematic cross-sectional views of a blood glucose meter according to an embodiment of the present invention.

Figure 4 is a schematic cross-sectional view showing another embodiment of the blood glucose meter of the present invention.

Figure 5 is a schematic block diagram of a blood glucose meter of the present invention, Figure 6 is a schematic flowchart of a blood glucose measurement method according to another embodiment of the present invention.

In the accompanying drawings, in order to more clearly express the technical idea of the present invention, parts that are not related to the technical idea of the present invention or can be easily derived from those skilled in the art will be simplified or omitted.

As shown in FIG. 1, the blood glucose meter 100 according to the embodiment of the present invention may be configured to apply reverse iontophoresis.

For example, the blood glucose meter 100 may be configured to apply reverse iontophoresis but applied invasive / semi-invasive blood glucose measurement principle.

For example, the blood glucose meter 100 may include a transmitter 10, an electrode unit 20, and a glucose sensor 30.

For example, the transmitter 10 transmits data related to the glucose concentration value or the blood glucose value measured by the glucose sensor 30 to an output device (not shown) including a receiver.

As the output device, it is possible to use a variety of known output devices (PC, smartphone, watch-type output device, etc.).

The electrode part 20 is formed to include the negative electrode 21 and the positive electrode 22, and the skin is allowed to collect a sufficient amount of glucose toward the negative electrode 21 by reverse iontophoresis. It acts to apply an electric current through the body.

In this case, the material of the electrode unit 20 may be an electrode including platinum (Pt), gold (Au), silver (Ag) and carbon (C), or silver / silver chloride (Ag / AgCl) electrode. It is not limited, it is possible to form the electrode unit 20 from a variety of materials.

The electrode portion 20 may be manufactured by any known method, for example, a screen printing method and sputtering.

At this time, it is also possible to form the electrode portion 20 in the form of a semi-invasive or fully invasive needle shape and inserted into the skin layer (semi-invasive) or subcutaneous layer (completely invasive).

The glucose sensor 30 may be formed in the form of a fine needle or a needle-like structure, and forms an enzyme electrode (not shown) therein to be implanted subcutaneously by a surgical method to directly measure the concentration of glucose in the cell liver fluid. Can play a role.

Since the glucose concentration in the intracellular fluid and the glucose concentration in the blood vessels change in conjunction with each other, the concentration of glucose in the intracellular fluid and the concentration of glucose in the blood vessel have almost a proportional value.

The glucose sensor 30 used in the present invention can use various known types of sensors.

In one example, the glucose sensor 30 may be implanted subcutaneously by the procedure.

In other words, the glucose sensor 30 may be completely implanted and inserted subcutaneously by the procedure.

The glucose concentration measurement method using the glucose sensor 30 used in the present invention may use an electrochemical analysis method known in the art, and the electrochemical analysis method consumes oxygen from glucose extracted by an enzyme electrode (not shown). By means of generating hydrogen peroxide, and by applying a proper potential to the generated hydrogen peroxide to oxidize, by measuring the amount of electrons generated, it may mean a method of measuring the concentration of glucose.

However, the method for measuring glucose concentration through the glucose sensor 30 is not limited to the above-described method, and any method capable of measuring glucose on a concentrated region by placing glucose in a concentrated region by reverse iontophoresis may be used by those skilled in the art. Various variations are possible.

Hereinafter, a blood glucose measurement method according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 6.

In the blood glucose measurement method according to the embodiment of the present invention, while injecting the electrode unit 20 into the skin and / or subcutaneously and inserting the glucose sensor 30 (S10), the current through the electrode unit 20 Applying step (S20), it can be divided into the step (S30) of measuring the concentration of glucose through the glucose sensor 30.

Hereinafter, each step will be described in more detail.

First, the glucose sensor 30 may be inserted in the negative electrode 21 direction while simultaneously injecting the electrode portion 20 into the skin and / or subcutaneously. At this time, it is also possible to form the electrode portion 20 in the form of a semi-invasive or fully invasive needle shape and inserted into the skin layer (semi-invasive) or subcutaneous layer (completely invasive).

The glucose sensor 30 has an enzyme electrode (not shown) formed therein in the form of a fine needle. The glucose sensor 30 is inserted subcutaneously in the direction of the negative electrode 21 of the electrode part 20 to directly adjust the glucose concentration in the intercellular fluid. It can be measured.

Thereafter, a current is applied through the electrode unit 20.

When a current is applied through the electrode unit 20, a current is applied to the intracellular transdermal fluid so that cations such as Na + in the intracellular fluid are directed toward the (−) pole 21, and anions such as Cl − are connected to the (+) pole ( The ion flow toward 22) is formed, and the concentration of glucose in the intercellular fluid is concentrated while moving toward the negative electrode 21 as shown by the arrow in FIG. 1 through the ion flow.

At this time, although glucose is not ionic in itself, cations such as Na + are piggybacked along the ion flow moving in the (-) pole 21 direction and move together in the (-) pole 21 direction.

After glucose is concentrated in the negative electrode 21 direction, the glucose concentration is measured through the glucose sensor 30.

Measurement of the concentration of glucose through the glucose sensor 30 may use an electrochemical analysis method known in the art. In the electrochemical analysis method, glucose is generated by glucose oxidase immobilized in the glucose sensor 30, and a concentration of glucose is measured by measuring a current generated by oxidizing by applying a predetermined voltage to the generated hydrogen peroxide, that is, an electric quantity. Can be measured.

The conventional invasive method is to measure only the glucose naturally introduced into the predetermined region of the electrode failure, so that the amount of glucose introduced around the electrode is difficult to ensure the accuracy of the measurement, but the present invention uses reverse iontophoresis to Since the method of forcibly collecting and concentrating glucose has a large amount of glucose flowing into the electrode periphery, the accuracy of the measurement is remarkably improved.

The measured glucose concentration is transmitted through the transmitter 10 to an output device (not shown) including a receiver outside the body, whereby it is possible to confirm the measured glucose concentration through the output device (not shown).

The glucose concentration continuously measured in a predetermined time unit can be stored in an output device (not shown) to record and manage the glucose concentration for several days.

As described above, in the glucose measuring method according to the embodiment of the present invention, after glucose is concentrated in the (-) pole 21 due to the current applied through the electrode unit 20, in the (-) pole 21 direction. Since the glucose concentration is measured through the inserted glucose sensor 30, the measurement accuracy can be remarkably improved compared to the conventional blood glucose measurement method.

As a result, the invasive continuous blood glucose meter 100 and the blood glucose measurement method using the same according to the present invention apply glucose to the negative electrode 21 by applying current through the electrode unit 20. After concentration, the glucose concentration is measured through the glucose sensor 30 inserted in the (-) pole 21 direction, so that the measurement accuracy is remarkably improved as compared to the conventional blood glucose meter 100. .

Further, even if the depth at which the glucose sensor 30 penetrates subcutaneously is small, accurate measurement of glucose concentration can be performed, so that the foreign body feeling can be significantly lowered.

Hereinafter, the blood glucose meter 100 described above will be described in more detail with reference to FIGS. 2 and 3.

For example, the electrode unit 20 may be disposed at a predetermined position of the skin to apply a current to the body.

For example, the electrode unit 20 may be disposed on the epidermis of the skin, or may be inserted into the dermis, subcutaneous fat layer, or the like.

Here, the glucose sensor 30 (hereinafter referred to as a sensor unit) may be configured to penetrate subcutaneously and measure glucose.

The sensor unit 30 may directly measure the amount of glucose, but may also indirectly measure the amount of glucose by acquiring data and / or chemical changes that may occur in contact with the glucose.

For example, the electrode part 20 may include a positive electrode 22 (hereinafter, referred to as a (+) electrode part) and a negative electrode 21 (hereinafter, referred to as a (−) electrode part). The positive electrode portion 22 and the negative electrode portion 21 may be spaced apart from each other by a predetermined distance and disposed at a predetermined position of the skin.

Here, for example, the separation distance between the end of the sensor unit 30 penetrated subcutaneously and the (-) electrode unit 21 installed in the skin is the end of the sensor unit 30 penetrated subcutaneously and the skin It may be different from the separation distance between the (+) electrode 22.

To describe this in more detail, as shown in FIG. 3, the separation distance between the end (lower end) of the sensor unit 30 and the (-) electrode unit 21 penetrated subcutaneously and disposed at a predetermined position is defined as the above. The distance between the end (lower end) of the sensor unit 30 and the (+) electrode unit 22 may be different.

For example, a distance between the end of the sensor unit 30 and the (-) electrode unit 21 may be smaller than a distance between the end of the sensor unit 30 and the (+) electrode unit 22.

That is, the end of the sensor unit 30 may be disposed to be biased toward the (-) electrode unit 21 rather than the (+) electrode unit 22.

In addition, as an example, an end portion of the sensor unit 30 may be disposed in a footprint A occupied by the negative electrode unit 21.

In more detail, when the (-) electrode part 21 is disposed at a predetermined position on the skin, the lower side of the (-) electrode part 21 is the footprint of the (-) electrode part 21. A predetermined area occupied by (A) is defined, and the end of the sensor unit 30 may be disposed in the footprint A defined by the negative electrode unit 21.

As a result, the sensor part 30 can be easily in contact with the glucose induced by the (-) electrode part 21.

An end of the sensor unit 30 described above may mean a lower end when viewed in the shape of the sensor unit 30, but may react with glucose in the sensor unit 30 when viewed in response to glucose. It can also mean the end of a part.

Hereinafter, the positional relationship between the electrode unit 20 and the sensor unit 30 will be described in more detail with reference to FIGS. 2 and 3.

For example, the blood glucose meter 100 may further include a position defining unit 40 defining a positional relationship between the electrode unit 20 and the sensor unit 30.

In one example, the position defining portion 40 is a positional relationship between the (-) electrode portion 21 and the (+) electrode portion 22, the sensor portion 30 and the (+) electrode portion 22 The positional relationship between and / or the positional relationship between the sensor unit 30 and the (-) electrode unit 21 may be defined.

The positional relationship refers to the position, distance and / or angle between the electrode unit 20 and the diffuser sensor unit 30 when the electrode unit 20 and the sensor unit 30 are installed in the human body. And the like.

That is, the electrode part 20 is installed on the skin and is directly or indirectly fixed on the skin, and the sensor part 30 penetrates subcutaneously but does not penetrate deeply even when an external force is applied. In a state in which the installation on the human body is completed), a positional relationship between the electrode unit 20 and the sensor unit 30 may be defined.

For example, the electrode unit 20 may be fixed at a predetermined position on the position defining unit 40.

For example, the (+) electrode part 22 and / or the (−) electrode part 21 may be fixed at a predetermined position on the position defining part 40.

For example, the electrode unit 20 may be formed on the bottom surface of the position defining unit 40 by screen printing, sputtering, or the like, and may be adhesively fixed by mechanical bonding, adhesive, or the like.

As a result, the electrode portion 20 may be fixed to a predetermined position on the lower side of the position defining portion 40.

In addition, the sensor unit 30 may penetrate subcutaneously at a predetermined position on the position defining unit 40.

That is, the position defining unit 40 may predefine the position where the sensor unit 30 penetrates subcutaneously.

For example, the position defining unit 40 may include a penetration induction unit defining a position where the sensor unit 30 penetrates subcutaneously, and the sensor unit 30 may penetrate subcutaneously through the penetration induction unit. Can be.

That is, the position defining part 40 may include the penetration inducing part that predefines a position at which the sensor part 30 penetrates subcutaneously.

As a result, the position defining portion 40 not only defines the position of the electrode portion 20 but also defines the position of the sensor portion 30 that penetrates subcutaneously, and consequently, Positional relationship between the sensor unit 30 may be defined.

Here, as an example, the penetration inducing part may be formed as a through space (S).

That is, the penetration induction part may be a space in which a part of the position defining part 40 penetrates.

For example, the penetration induction part may be formed between the (+) electrode part 22 and the (−) electrode part 21, and further, the inclined toward the (−) electrode part 21 toward the lower side. It may be formed as a through space (S).

The user may insert the sensor unit 30 subcutaneously through the penetration induction unit.

The penetration guide part may be the through space S, but is not limited thereto, and may be an identification mark that is distinguished from other parts of the position defining part 40.

Here, in one example, the blood glucose meter 100 is disposed on the through space (S) so that the sensor unit 30 and the position defining unit 40 is spaced apart from each other on the through space (S), the sensor It may further include a guide portion 50 for guiding the portion 30 to penetrate subcutaneously.

For example, the guide part 50 may be configured such that the sensor part 30 disposed on the through space S and the position defining part 40 defining the through space S are spaced apart from each other. Can be.

Furthermore, the guide part 50 is disposed on the through space S so that the sensor part 30 inserted into the through space S may penetrate subcutaneously without facing the position defining part 40. can do.

In one example, the guide portion 50 may be a pipe shape having a hollow.

The sensor unit 30 may penetrate subcutaneously through the hollow formed by the guide unit 50.

For example, the guide part 50 may be attached to the position defining part 40 and may have a material different from that of the position defining part 40.

In addition, the guide unit 50 may be connected to the sensor unit 30 and moved in conjunction with the sensor unit 30.

Hereinafter, the blood glucose meter 100 and the blood sugar measuring method will be described in more detail with reference to FIGS. 2 and 3.

First, the user may install the position defining unit 40 on which the electrode unit 20 is mounted.

For example, an adhesive layer may be formed on the lower surface of the position defining part 40 opposite to the skin so as not to be separated from a predetermined position of the skin, or may be fixed to a predetermined position of the human body by having a heat connecting member such as a band. .

For example, the position defining portion 40 may have a pad shape having an adhesive layer formed on a lower surface thereof, or may be a case.

The user may fix the position defining portion 40 to a predetermined position of the skin.

As a result, the (+) electrode portion 22 and the (-) electrode portion 21 can be fixed to a predetermined position of the skin by the position defining portion 40.

After arranging the position defining portion 40 and the electrode portion 20 at a predetermined position of the skin, the user can penetrate the sensor portion 30 subcutaneously.

At this time, the user may penetrate the sensor unit 30 subcutaneously through the penetration induction unit provided in the position defining unit 40.

The degree of penetration of the sensor unit 30 subcutaneously may be predetermined.

For example, the sensor unit 30 may be predetermined to penetrate subcutaneously due to direct / indirect contact with the position defining unit 40 and / or the guide unit 50.

To describe this in more detail, when the user applies the external force to penetrate the sensor unit 30 subcutaneously, the user can infiltrate the sensor unit 30 only to a predetermined degree, and to infiltrate the above further When an external force is applied to the sensor unit 30, the sensor unit 30 and the position defining unit 40 and / or the guide unit 50 are in direct or indirect contact with each other, so that the sensor unit 30 is no longer avoided. It may not penetrate into.

As a result, the position defining portion 40 and / or the guide portion 50 not only defines the positional relationship between the sensor portion 30 and the electrode portion 20, but also the sensor portion 30 You can also specify the degree of depth that penetrates subcutaneously.

After the sensor unit 30 is inserted at a predetermined subcutaneous position, the electrode unit 20 may apply a current to concentrate the glucose toward the negative electrode unit 21.

Thereafter, the sensor unit 30 may measure blood glucose by reacting with glucose induced toward the (-) electrode unit 21.

4 is a diagram illustrating another embodiment of the blood glucose meter 100.

As shown in FIG. 4, the penetration induction part may be formed on the footprint A defined by the negative electrode part A21.

That is, the penetration induction part may be formed at a position surrounded by the (-) electrode part A21 in at least one direction, and the sensor part 30 penetrated subcutaneously through the penetration induction part may be formed in the (-) direction. The electrode portion A21 may be disposed on the footprint A defined.

5 is a schematic block diagram of a configuration of the blood glucose meter 100, wherein the blood glucose meter 100 may include the transmitter 10, the electrode unit 20, the sensor unit 30, and the controller 60. Can be.

The controller 60 may be configured to implement control of current application of the electrode unit 20, calculation / calculation of data sensed from the sensor unit 30, and / or control of operation of the transmitter 10. Can be.

For example, the transmitter 10, the electrode unit 20, the sensor unit 30, the control unit 60, the position defining unit 40, and the guide unit 50 constituted by the blood glucose meter 100. ) May be configured such that at least one is detached from one another.

That is, for example, the electrode unit 20 may be replaced with the new electrode unit 20 by being detached from the position defining unit 40, and the guide unit 50 may be replaced with the position defining unit 40. It may be removable.

Also, as an example, the position defining unit 40 may be detachable from the transmitter 10.

In addition, as an example, the electrode unit 20 is moved by the external force of the user has been described as being penetrated subcutaneously through the penetration induction unit, but is not limited thereto, the electrode unit 20 is already the penetration induction unit It may be used by the user in a state arranged at a predetermined position on the position defining portion 40 through the.

That is, when the user installs the position defining portion 40 on the skin, the electrode portion 20 fixed to the position defining portion 40 is installed on the skin and fixed to the position defining portion 40. The sensor unit 30 may penetrate subcutaneously.

Although the above-described blood glucose meter 10 is used for measuring blood glucose, the technical idea of the present invention is not limited to the use of blood sugar measurement, and is installed in a human body, an animal, and the like to obtain data related to human health and animal health. It can also be used for other purposes.

That is, it will be apparent to those skilled in the art that the technical spirit of the present invention may be modified for other uses.

In the above description of the configuration and features of the present invention based on the embodiment according to the present invention, the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. As will be apparent to those skilled in the art, such changes or modifications are intended to fall within the scope of the appended claims.

10: transmitter
20: electrode part
30: sensor unit
40: position regulation

Claims (9)

In the blood glucose meter installed on the skin to measure blood glucose,
An electrode unit disposed at a predetermined position on the skin to apply an electric current to the body; And
And a sensor unit penetrating subcutaneously to measure glucose.
The electrode unit,
(+) Electrode portion and (-) electrode portion,
The separation distance between the end of the sensor portion and the (-) electrode portion,
Different from the separation distance between the end of the sensor and the positive electrode,
Blood glucose meter.
The method of claim 1,
Further comprising: a position defining portion for defining a positional relationship between the electrode portion and the sensor portion,
Blood glucose meter.
The method of claim 2,
The electrode unit,
Fixed to a predetermined position on the position defining portion,
The sensor unit,
Penetrated subcutaneously at a predetermined position on the position defining portion,
Blood glucose meter.
The method of claim 3,
The location defining unit,
A penetration induction portion defining a position at which the sensor portion penetrates subcutaneously,
The sensor unit,
Penetrated subcutaneously through the penetration induction part,
Blood glucose meter.
The method of claim 4, wherein
The penetration induction part,
Formed as a through space,
Blood glucose meter.
The method of claim 5,
And a guide part disposed on the through space so that the sensor part and the position defining part are spaced apart from each other on the through space, and guide the sensor part to penetrate subcutaneously.
Blood glucose meter.
The method of claim 1,
The separation distance between the end of the sensor portion and the (-) electrode portion,
Less than the separation distance between the end of the sensor and the (+) electrode,
Blood glucose meter.
The method of claim 7, wherein
An end of the sensor unit,
Disposed in a footprint occupied by the negative electrode portion,
Blood glucose meter.
A blood glucose measurement method for measuring blood sugar using a blood glucose meter according to any one of claims 1 to 8.

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