Glucose concentration micro-current testing device

Abstract

The utility model relates to a glucose concentration micro-current testing device, which belongs to the technical field of electrode detection and comprises a detection seat, a detection water tank and a detection component. The detection water tank is arranged at the top of the detection seat; the detection assembly and the detection water tank are matched with the detection electrode; the detection assembly comprises a first needle holding piece, a second needle holding piece, a detection plate and a conduction piece, the first needle holding piece and the second needle holding piece are hinged from the top, the detection plate is arranged on the first needle holding piece and provided with a detection module, the detection module is used for placing an electrode, and the conduction piece is arranged on the second needle holding piece; according to the utility model, through the hinged double needle holding members, the electrode contact action is simplified into single pressing operation, the operation convenience and the electrode contact stability are improved, meanwhile, the detection error caused by poor contact or improper operation is effectively avoided, and the detection accuracy is improved. And the accuracy and repeatability of a detection result are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrode detection, and in particular relates to a glucose concentration microcurrent testing device. Background Art

[0002] Rapid and accurate blood glucose measurement is crucial for the daily management and medical diagnosis of diabetic patients. Electrochemical methods typically utilize biosensors such as glucose oxidase (GOD) to catalyze the oxidation of glucose, generating a microcurrent signal proportional to the glucose concentration.

[0003] However, existing glucose microcurrent detection devices still face several technical challenges in practical applications: the reliability of the physical connection between the detection instrument probe and the test strip electrode is key. Traditional insertion or press-type contact methods are prone to unstable contact resistance, uneven contact pressure, or even poor contact due to differences in operating techniques, probe wear, or slight deformation of the test strip. This will introduce significant measurement noise and errors, reducing the repeatability and accuracy of the test results. During operation, the test strip needs to be accurately inserted into the narrow slot or aligned with the contact point. The steps are relatively cumbersome and prone to errors. The complex operation not only affects the user experience, but may also directly affect the contact quality due to improper operation.

[0004] Enzymatic reaction rates are highly temperature-dependent. Changes in ambient temperature can cause current signals generated at the same blood glucose concentration to drift. Most existing portable blood glucose meters lack effective active temperature control mechanisms, relying solely on ambient temperature or limited body temperature compensation algorithms. This makes it difficult to completely eliminate measurement deviations caused by temperature fluctuations, especially in extreme temperature environments, where accuracy decreases significantly.

[0005] Therefore, it is urgent to develop a new type of glucose concentration microcurrent testing device that can effectively solve the problem of electrode contact stability. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a glucose concentration microcurrent testing device to solve the problem that the existing electrode detection steps are frequent and prone to errors, which easily affect the detection.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A glucose concentration microcurrent testing device comprises a detection seat, a detection water tank and a detection component; the detection water tank is arranged on the top of the detection seat, and the detection component cooperates with the detection water tank to form a detection electrode;

[0009] The detection component includes a first needle holder, a second needle holder, a detection plate and a conductive member. The first needle holder and the second needle holder are hinged from the top. The detection plate is arranged on the first needle holder. The detection plate is provided with a detection module. The detection module is used to place the electrode. The conductive member is arranged on the second needle holder. The conductive member contacts the electrode and forms a closed path with the detection plate for detecting the electrode current.

[0010] Preferably, a PCB module is further included, and the detection water tank and the detection component are both provided with a heating module, the heating module is electrically connected to the PCB module, and the heating module is used to heat the detected water tank and the electrode clamped in the detection component.

[0011] Preferably, the detection water tank is also provided with a drain pipe for draining the solution in the water tank.

[0012] Preferably, the detection seat is equipped with a pressure pipe assembly, which is used to realize the opening and closing of the drain pipe; the pressure pipe assembly includes a bracket, a clamping plate, a transmission member, a spring and a cam member, the bracket is arranged on one side of the detection seat, the clamping plate and the transmission member are both slidably arranged on the bracket, the spring is arranged between the clamping plate and the transmission member, and the cam member abuts against the transmission member.

[0013] Preferably, positioning components are further provided on the left and right sides of the first needle holder, and the positioning components cooperate with the positioning holes provided on the detection seat to place the electrode in the detection water tank; the positioning component includes a guide seat fixedly connected to the first needle holder, and the bottom of the guide seat cooperates with the top of the detection seat to support the first needle holder; at least two positioning strips are provided at the bottom of the guide seat, and the positioning strips cooperate with the positioning holes.

[0014] Preferably, it also includes a locking assembly, which is engaged with the anchor hook portion provided on the second needle holding member to maintain the fit between the first needle holding member and the second needle holding member; the locking assembly includes a locking block and a clamping portion, the clamping portion is provided on the locking block and protrudes toward the first needle holding block, and the clamping portion is engaged with the anchor hook portion.

[0015] The beneficial effects of the utility model are:

[0016] The utility model simplifies the electrode contact action into a single pressing operation through the articulated double-needle holding parts, thereby improving the convenience of operation and the stability of electrode contact. At the same time, it effectively avoids detection errors caused by poor contact or improper operation, and improves the accuracy and repeatability of detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a testing device provided in one embodiment of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of a testing device provided in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of a detection base provided in one embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a detection component provided in one embodiment of the present invention;

[0022] Figure 5 for Figure 4 A in the middle is an enlarged structural diagram;

[0023] Legend: 1. Detection seat; 11. Positioning hole; 2. Detection water tank; 3. Detection assembly; 31. First needle holder; 32. Second needle holder; 321. Anchor hook; 33. Detection plate; 34. Conducting part; 4. Electrode; 5. Heating module; 6. Drain pipe; 7. Pipe pressing assembly; 71. Bracket; 72. Pressing plate; 73. Transmission part; 74. Spring; 75. Cam part; 8. Positioning assembly; 81. Guide seat; 82. Positioning strip; 9. Locking assembly; 91. Locking block; 92. Clamping part. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-Figure 5 As shown; a glucose concentration microcurrent testing device includes a detection seat 1, a detection water tank 2 and a detection component 3; the detection water tank 2 is arranged on the top of the detection seat 1, and the detection component 3 and the detection water tank 2 cooperate with the detection electrode 4; the detection component 3 is mainly used to achieve stable contact between the electrode 4 and the detection circuit, so as to accurately measure the microcurrent generated by the enzyme-catalyzed oxidation reaction of glucose.

[0026] The detection assembly 3 includes a first needle holder 31, a second needle holder 32, a detection plate 33, and a conductive member 34. The first needle holder 31 and the second needle holder 32 are hinged from the top. The detection plate 33 is arranged on the first needle holder 31. The detection plate 33 is provided with a detection module. The hinged first needle holder 31 and the second needle holder 32 are opened upward, and the test strip is placed on the detection module of the detection plate 33. The conductive member 34 is arranged on the second needle holder 32. The first needle holder 31 and the second needle holder 32 are closed and clamped. The conductive member 34 automatically presses the contact of the electrode 4 of the test strip. The conductive member 34 contacts the electrode 4 and forms a closed path for the current of the electrode 4 with the detection plate 33.

[0027] Furthermore, after the test strip is immersed in the test sample solution in the detection tank 2, the glucose molecules undergo an oxidation reaction under the catalysis of the immobilized enzyme (such as glucose oxidase) on the test strip, generating hydrogen peroxide and releasing electrons, thereby generating a microcurrent. The microcurrent is collected through the closed circuit composed of the conductive component 34 and the detection module, and the detection module performs signal processing and analysis, and finally converts it into the corresponding glucose concentration value.

[0028] In summary, the utility model simplifies the contact action of the electrode 4 into a single pressing operation through the articulated double-needle holding part, thereby improving the convenience of operation and the stability of the contact of the electrode 4. At the same time, it effectively avoids the detection errors caused by poor contact or improper operation, and improves the accuracy and repeatability of the detection results.

[0029] In one embodiment, a PCB module is also included. Both the detection tank 2 and the detection assembly 3 are equipped with a heating module 5, which is electrically connected to the PCB module. The PCB module serves as a central control unit, monitoring the temperature of the detection tank 2 and the electrode 4 in real time via a built-in temperature sensor. After algorithmic processing, it sends instructions to the heating module 5. The heating film at the bottom of the detection tank 2 and the heating wire built into the detection assembly 3 are activated, employing PID temperature control technology to achieve precise temperature control within ±0.1°C. The heating module 5 preheats the water tank solution by heat conduction to ensure that the electrochemical reaction proceeds at the set temperature. The detection water tank 2 is also wrapped with thermal insulation cotton to prevent the temperature of the detection water tank 2 from losing temperature quickly. The heating module 5 located in the detection component 3 is embedded in the detection component 3 to heat the electrode 4 in the clamped state. When the electrode 4 is clamped, the heating module 5 is used to heat the electrode 4, so that the solution is immersed in the carbon layer of the electrode 4 during the detection process, affecting the detection result. Heating helps to reduce the viscosity of the solution and promote its uniform diffusion. At the same time, it can also accelerate the evaporation of water to avoid excessive immersion of the solution in the carbon layer of the electrode 4 during the detection process, causing the performance of the electrode 4 to deteriorate or the signal drift.

[0030] In one embodiment, the detection water tank 2 is also provided with a drain pipe 6. When the detection is completed, the drain pipe 6 is opened, and the solution flows into the waste liquid collection bin through the drain pipe 6 under the action of gravity, thereby realizing automatic replacement of the detection liquid, shortening the single detection waste liquid processing time, and avoiding the risk of splashing when manually pouring the solution.

[0031] In one embodiment, the detection seat 1 is equipped with a pressure pipe assembly 7, which is used to open and close the drain pipe 6. The pressure pipe assembly 7 includes a bracket 71, a clamping plate 72, a transmission member 73, a spring 74, and a cam member 75. The bracket 71 is arranged on one side of the detection seat 1. The clamping plate 72 and the transmission member 73 are both slidably arranged on the bracket 71. The spring 74 is arranged between the clamping plate 72 and the transmission member 73. The cam member 75 abuts against the transmission member 73. The cam member 75 is driven to rotate by a motor, and its eccentric structure pushes the transmission member 73 to slide along the guide rail of the bracket 71, compressing the spring 74 to store energy. When the long axis end of the cam contacts the transmission member 73, the clamping plate 72 completely compresses the drain pipe 6 to achieve a seal. When the short axis end of the cam is released, the spring 74 resets and drives the clamping plate 72 to loosen the drain pipe 6. A rolling friction design is adopted between the transmission member 73 and the cam to reduce mechanical wear.

[0032] In one embodiment, positioning components 8 are further provided on the left and right sides of the first needle holder 31, and the positioning components 8 cooperate with the positioning holes 11 provided on the detection seat 1 to place the electrode 4 in the detection tank 2; the positioning component 8 includes a guide seat 81 fixedly connected to the first needle holder 31, and the bottom of the guide seat 81 cooperates with the top of the detection seat 1 to support the first needle holder 31; at least two positioning bars 82 are provided at the bottom of the guide seat 81, and the positioning bars 82 cooperate with the positioning holes 11. When the user presses down the first needle holder 31, the bottom of the guide seat 81 first contacts the top of the detection seat 1 to provide vertical support, and continues to press down, and the positioning bars 82 are inserted into the positioning holes 11 of the detection seat 1, forcing the horizontal position of the needle holder to be corrected, the vertical support and the horizontal jack constraint to ensure that the detection plate 33 is aligned with the center of the detection tank 2, thereby achieving a quick installation effect.

[0033] In one embodiment, it includes a locking assembly 9, which is engaged with the anchor hook portion 321 provided on the second needle holding member 32 to maintain the fit between the first needle holding member 31 and the second needle holding member 32; the locking assembly 9 includes a locking block 91 and a clamping portion 92, and the clamping portion 92 is provided on the locking block 91 and protrudes toward the first needle holding member 31, and the clamping portion 92 is engaged with the anchor hook portion 321; the clamping portion 92 adopts a trapezoidal design, which forms a complementary fit with the hook-shaped clamping groove of the anchor hook portion 321 of the second needle holding member 32, so that when the first needle holding member 31 and the second needle holding member 32 are hingedly clamped, the electrode 4 is ensured to be stably clamped between the two. When the electrode 4 needs to be replaced or removed, the first needle holding member 31 and the second needle holding member 32 are rotated and separated, and then the clamping portion 92 and the anchor hook portion 321 are separated during the rotation process, and the clamping fit relationship between the clamping portion 92 and the anchor hook portion 321 is cancelled.

[0034] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A glucose concentration microcurrent testing device, comprising a detection seat, a detection water tank and a detection component; the detection water tank is arranged on the top of the detection seat, characterized in that: The detection component and the detection water tank cooperate with the detection electrode; The detection component includes a first needle holder, a second needle holder, a detection plate and a conductive member. The first needle holder and the second needle holder are hinged from the top. The detection plate is arranged on the first needle holder. The detection plate is provided with a detection module. The detection module is used to place the electrode. The conductive member is arranged on the second needle holder. The conductive member contacts the electrode and forms a closed path with the detection plate for detecting the electrode current.

2. A glucose concentration microcurrent testing device according to claim 1, characterized in that: It also includes a PCB module. The detection water tank and the detection component are both provided with a heating module. The heating module is electrically connected to the PCB module. The heating modules are both used to heat the detected water tank and the electrodes clamped in the detection component.

3. A glucose concentration microcurrent testing device according to claim 1, characterized in that: The detection water tank is also provided with a drain pipe for draining the solution in the water tank.

4. A glucose concentration microcurrent testing device according to claim 3, characterized in that: The detection seat is equipped with a pressure pipe assembly, which is used to open and close the drain pipe; the pressure pipe assembly includes a bracket, a clamping plate, a transmission member, a spring and a cam member, the bracket is arranged on one side of the detection seat, the clamping plate and the transmission member are both slidably arranged on the bracket, the spring is arranged between the clamping plate and the transmission member, and the cam member abuts against the transmission member.

5. A glucose concentration microcurrent testing device according to claim 1, characterized in that: Positioning components are also provided on the left and right sides of the first needle holder, and the positioning components cooperate with the positioning holes provided on the detection seat to place the electrode in the detection water tank; the positioning component includes a guide seat fixedly connected to the first needle holder, and the bottom of the guide seat cooperates with the top of the detection seat to support the first needle holder; at least two positioning strips are provided at the bottom of the guide seat, and the positioning strips cooperate with the positioning holes.

6. A glucose concentration microcurrent testing device according to claim 1, characterized in that: It also includes a locking assembly, which is engaged with the anchor hook portion provided on the second needle holding member to maintain the fit between the first needle holding member and the second needle holding member; the locking assembly includes a locking block and a clamping portion, the clamping portion is provided on the locking block and protrudes toward the first needle holding block, and the clamping portion is engaged with the anchor hook portion.

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