A test strip for detecting the content of an analyte

Abstract

The utility model provides a kind of test strip for detecting analyte content, including substrate, electrode system and protective layer, reagent is equipped on electrode system and includes information giving electrode and signal input electrode with analyte can occur reaction, information giving electrode includes electrode contact and at least four profiled electrode head and tail connection formed rim electrode, at least two profiled electrode are connected by electrode node, further including one end connection electrode node, the wing electrode of other end connection electrode contact.The utility model can be in the limited space of test strip, realize the purpose of enlarging the operable space of free code on-off signal, reducing the scrap rate of test strip and increasing the number of on-off signal combination.

Description

Technical Field

[0001] This utility model relates to a test strip for detecting the content of an analyte, and particularly to a test strip for detecting the content of an analyte in the field of in vitro diagnostic testing. Background Technology

[0002] The accuracy and precision of in vitro diagnostic (IVD) products are of paramount importance because they directly impact doctors' diagnoses. Regular calibration is typically used to ensure the accuracy of IVD products, calibrating both the reagents and the instrument. Dry-reagent IVD products, such as portable blood glucose meters, are used not only by doctors and hospitalized patients but also by individual patients and their families. However, for individual patients or family users, regular instrument or reagent calibration is impractical. Therefore, to ensure the accuracy of dry-reagent tests at the end-user's hands, manufacturers often calibrate the reagents before they leave the factory, using product codes to distinguish different batches for customer calibration. However, due to unavoidable process and material variations, the codes for dry diagnostic reagents differ between batches. Furthermore, different manufacturers and markets have varying requirements for product quality. Therefore, dry-reagent reagents generally have a unique code for each batch. End-users must promptly change the code when using different batches of dry-reagent reagents; otherwise, test failures or significant errors may occur. To avoid such situations, manufacturers are improving the consistency of processes and materials to reduce batch discrepancies. They are also trying to integrate the corresponding batch information with reagents to enable instruments to automatically identify reagent batch numbers and coding information during use, thereby avoiding coding errors. These designs are currently widely used in commercial electrochemical sensors, such as those for blood glucose.

[0003] In existing technologies, CN101802598B and US9261479B2 distinguish different modulation signals by setting multiple information areas, but their disadvantages are high raw material costs and a small number of modulation signals. CN101156066B completes the design of different circuits and different information by setting multiple contact points and electrodes extending from the contact points, but its disadvantage is that there are few modulation signals under the premise of limited contact points. CN102967636B and CN104034767B use the on / off state of different paths to assign modulation values, and have more modulation signals under the premise of limited contact points, but require the original connection to be orderly cut off in the later stage by means of drilling, laser cutting, etc., so as to achieve signal recognition, which has limitations in terms of process. First, because the connection between different electrodes is spatially limited, it is difficult to realize more signal combinations in a limited space. Especially when there are four or more contact points, it is difficult to expand the multiple combinations of on / off signals beyond simple electrode on / off signals, thus limiting the diversity of the test strip signal library. Summary of the Invention

[0004] connect

[0005] The connection mentioned in the text refers to the mutual contact between two electrode structures. Even if the state of the electrodes causes the two electrodes to be in an open state, resulting in the signal not being transmitted between the two electrodes, it cannot be denied that the two electrode structures are in a connected state.

[0006] To address the aforementioned technical problems, this utility model provides a test strip for detecting the content of an analyte, comprising a substrate, an electrode system, and a protective layer. The electrode system is provided with a reagent that can react with the analyte. The electrode system includes an information-assigning electrode and a signal-inputting electrode. The information-assigning electrode includes an electrode contact and a rim electrode formed by connecting at least four profile electrodes end to end. At least two profile electrodes are connected by an electrode node. The information-assigning electrode also includes a wing electrode with one end connected to the electrode node and the other end connected to the electrode contact. The profile electrodes and wing electrodes are configured in a closed first state or an open second state.

[0007] Furthermore, the number of wing electrodes is the same as the number of profile electrodes and they are arranged around the forming path of the rim electrode.

[0008] In particular, the rim electrode between the intersection of two non-adjacent profile electrodes is divided into two equal parts and connected in parallel.

[0009] Furthermore, an axial electrode is formed between the intersection points of any two non-adjacent profile electrodes, and the axial electrode is configured in a closed first state or an open second state.

[0010] Specifically, the axial electrode is connected to the intersection of the remaining at least two adjacent sets of profile electrodes to form an N-sided polygon, wherein the number of intersections of each set of profile electrodes is not less than two, and N≥4. As the number of profile electrodes increases, this special axial electrode can further increase the number of on / off signal combinations.

[0011] Specifically, any two axis electrodes intersect at a unique axis node to form a split axis electrode, which is configured in a closed first state or an open second state.

[0012] Furthermore, the intersection of the profile electrodes and the axis node are connected in parallel by profile electrodes and axis electrodes of the same length.

[0013] Furthermore, the substrate includes a first surface and a second surface, with an information-assigning electrode disposed between the first surface and the first protective layer, and a signal input electrode disposed between the second surface and the second protective layer.

[0014] Specifically, the information-assigning electrode is disposed on the first surface of the substrate by any one of printing, printing, spraying, coating, sputtering, or any two or more methods combined.

[0015] Furthermore, the test strip also includes a septum and a cover layer. The septum is located between the cover layer and the first protective layer. The base, septum, and cover layer together form the sample injection channel.

[0016] This invention can expand the operable space of the on / off signal without code adjustment, reduce the scrap rate of the test strip, and increase the number of on / off signal combinations within the limited space of the test strip. Attached Figure Description

[0017] Figure 1-1 An exploded view of one embodiment of the first test strip of this utility model.

[0018] Figure 1-2 An exploded view of the second embodiment of the first test strip of this utility model.

[0019] Figure 2-1 An exploded view of one embodiment of the second type of test strip of this utility model.

[0020] Figure 2-2 An exploded view of the second embodiment of the test strip of this utility model.

[0021] Figure 3-1 The first information imparting electrode in the test strip of this utility model.

[0022] Figure 3-2 The second type of information imparting electrode in the test strip of this utility model.

[0023] Figure 4(a), (b), (c) The third type of information imparted to the electrode in the test strip of this utility model.

[0024] Figure 5 One of the embodiments of the fourth information imparting electrode in the test strip of this utility model.

[0025] Figure 6 This is the second embodiment of the fourth information imparting electrode in the test strip of this utility model.

[0026] Figure 7 The third embodiment of the fourth information imparting electrode in the test strip of this utility model.

[0027] Figure 8 This is the fourth embodiment of the fourth type of information imparting electrode in the test strip of this utility model.

[0028] Figure 9 The fifth type of information imparting electrode in the test strip of this utility model.

[0029] Figure 10-1 The sixth type of information imparting electrode in the test strip of this utility model.

[0030] Figure 10-2 The seventh type of information imparting electrode in the test strip of this utility model.

[0031] Figure 11-1 The eighth type of information imparting electrode in the test strip of this utility model.

[0032] Figure 11-2 The ninth information imparting electrode in the test strip of this utility model.

[0033] Figure 11-3 The tenth information imparting electrode in the test strip of this utility model. Detailed Implementation

[0034] Example 1

[0035] like Figure 1-1As shown, a test strip for detecting analyte content includes a substrate 1, an electrode system 2, a reagent layer 3, and a protective layer 4. A channel for biological sample flow is formed between the substrate and the protective layer. The reagent layer is located on a portion of the electrode system within this channel. The electrode system includes an information-assigning electrode and a signal-inputting electrode. The signal-inputting electrode is partially covered by the reagent layer. When the reagent reacts with the analyte, the resulting electrical signal is received and conducted through the signal-inputting electrode. The information-assigning electrode and the signal-inputting electrode are mounted on the substrate 1 together using any one of the following methods: printing, spraying, coating, sputtering, etc. The information-assigning electrode and the signal-inputting electrode can also be mounted separately, sequentially using any one of the following methods: printing, spraying, coating, sputtering, etc. That is, the same method can be used, or different methods can be used. The information-assigning electrode or the signal-inputting electrode can also be mounted on the substrate 1 using any two, three, four, or five of the following methods: printing, spraying, coating, sputtering, etc.

[0036] like Figure 3-1 As shown, the information-assigning electrode includes a rim electrode, an electrode node, a wing electrode, and an electrode contact. The first profile electrode 111, the second profile electrode 112, the third profile electrode 113, and the fourth profile electrode 114 are connected end to end to form the rim electrode. The first profile electrode 111 and the second profile electrode 112 are connected through an electrode node 122. The second profile electrode 112 and the third profile electrode 113 are connected through a third electrode contact 143. The third profile electrode 113 and the fourth profile electrode 114 are connected through a fourth electrode contact 144. The first profile electrode 111 and the fourth profile electrode 114 are connected through a first electrode contact 141. The first end of the second wing electrode 132 is connected to the electrode node 122, and the second end of the second wing electrode 132 is connected to the second electrode contact 142. The first profile electrode 111, the second profile electrode 112, the third profile electrode 113, the fourth profile electrode 114, and the second wing electrode 132 can all be configured to be either a closed first state or an open second state. The states of the aforementioned electrodes on the same information-assigning electrode are not exactly the same. That is, when any one of the electrodes is in the closed first state or the open second state, any other electrode can be in the closed first state or the open second state.

[0037] like Figure 1-2As shown, the test strip also includes a partition layer 5 and a cover layer 6. The partition layer is disposed between the protective layer and the cover layer. The substrate, the partition layer, and the cover layer together form a fluid channel for the fluid containing the analyte to enter. The signal input electrode is disposed between the partition layer and the first protective layer 401, that is, the partition layer is disposed between the cover layer and the first protective layer. The information imparting electrode is disposed between the substrate and the second protective layer 402. When... Figure 1-2 In the absence of a partition layer and a capping layer, the protective layer serves as both a partition layer and a capping layer, protecting the electrode system and forming a fluid channel with the substrate for the analyte to enter.

[0038] Example 2

[0039] like Figure 2-1 As shown, a test strip for detecting analyte content includes a substrate 1, an electrode system, a reagent layer 3, and a protective layer 4. The substrate includes a first surface 101 and a second surface 102. The electrode system includes an information-assigning electrode 201 and a signal-input electrode 202. The information-assigning electrode is disposed on the first surface of the substrate, and the signal-input electrode is disposed on the second surface. A channel for the flow of biological samples is formed between the second surface of the substrate and the protective layer. The reagent layer is located on a portion of the electrode system within this channel, covering a portion of the signal-input electrode. When the reagent reacts with the analyte, the resulting electrical signal is received and conducted through the signal-input electrode. Figure 3-1 As shown, the information assignment electrode is exactly the same as in Example 1. The information assignment electrode and the signal input electrode are respectively disposed on the first surface and the second surface of the substrate by any one of the following methods: printing, spraying, coating, sputtering, etc. The information assignment electrode and the signal input electrode may also not be disposed simultaneously; they may be disposed sequentially on the first surface and the second surface of the substrate by any one of the following methods: printing, spraying, coating, sputtering, etc. That is, the same method can be used, or different methods can be used. The information assignment electrode or the signal input electrode may also be disposed on the first surface and the second surface of the substrate by any two, three, four, or five of the following methods: printing, spraying, coating, sputtering, etc.

[0040] like Figure 2-2 As shown, the test strip also includes a partition layer 5 and a cover layer 6. The partition layer is disposed between the protective layer and the cover layer. The substrate, the partition layer, and the cover layer together form a fluid channel for the fluid containing the analyte to enter. The signal input electrode is disposed between the partition layer and the first protective layer 401, that is, the partition layer is disposed between the cover layer and the first protective layer. The information imparting electrode is disposed between the substrate and the second protective layer 402. When... Figure 1-2In the absence of a partition layer and a capping layer, the protective layer serves as both a partition layer and a capping layer, protecting the electrode system and forming a fluid channel with the substrate for the analyte to enter.

[0041] Example 3

[0042] like Figure 4 As shown, and as Figure 3-1 The difference is that the third profile electrode 113 and the fourth profile electrode 114 are connected via the fourth electrode node 124, the first end of the fourth wing electrode 134 is connected to the fourth electrode node 124, and the second end of the fourth wing electrode 134 is connected to the fourth electrode contact 144. The first profile electrode 111, the second profile electrode 112, the third profile electrode 113, the fourth profile electrode 114, the second wing electrode 132, and the fourth wing electrode 134 can all be configured to be in a closed first state or an open second state. The states of the aforementioned electrodes on the same information-assigning electrode are not entirely the same; that is, when any one electrode is in a closed first state or an open second state, any other electrode can be in either a closed first state or an open second state. For example, as... Figure 4 All electrodes in (a) are in the closed first state, such as Figure 4 In (b), the first and third profile electrodes are both in the open second state, while the remaining electrodes are all in the closed first state, such as... Figure 4 In (c), the second and fourth wing electrodes are both in the open second state, while the remaining electrodes are in the closed first state.

[0043] Example 4

[0044] like Figure 5As shown, the first profile electrode 111, the second profile electrode 112, the third profile electrode 113, and the fourth profile electrode 114 are connected end to end to form a rim electrode. The forming path of the rim electrode is a convex quadrilateral. The first profile electrode 111 and the second profile electrode 112 are connected through the second electrode node 122, the second profile electrode 112 and the third profile electrode 113 are connected through the third electrode node 123, the third profile electrode 113 and the fourth profile electrode 114 are connected through the fourth electrode node 124, and the first profile electrode 111 and the fourth profile electrode 114 are connected through the first electrode node 121. The first wing electrode 131, the second wing electrode 132, the third wing electrode 133, and the fourth wing electrode 134 are arranged around the forming path of the rim electrode, that is, around the edge of the convex quadrilateral. The number of wing electrodes is the same as the number of profile electrodes. Specifically, the first end of the first wing electrode 131 is connected to the first electrode node 121, the second end of the first wing electrode is connected to the first electrode contact 141, the first end of the second wing electrode 132 is connected to the second electrode node 122, the second end of the second wing electrode is connected to the second electrode contact 142, the first end of the third wing electrode 133 is connected to the third electrode node 123, the second end of the third wing electrode is connected to the third electrode contact 143, the first end of the fourth wing electrode 134 is connected to the fourth electrode node 124, and the second end of the fourth wing electrode is connected to the fourth electrode contact 144.

[0045] Figure 5 In the first closed state, both the profile electrode and the wing electrode are in a closed state. In this case, information can be provided, represented as 141-142-143-144, where "-" indicates a signal connection state (the same applies below). For example... Figure 6 As shown, all profile electrodes are in the open second state, and all wing electrodes are in the closed first state. This provides one piece of information. Alternatively, all wing electrodes could be in the open second state. Regardless of the profile electrode's state, the information provided is the same, represented as 141 / 142 / 143 / 144, where " / " indicates a signal interruption state (the same applies below). For example... Figure 7 As shown, the first and third profile electrodes are in the open second state, while the second, fourth, and all wing electrodes are in the closed first state. In this case, information can be provided, represented as 141-144 / 142-143. (As shown...) Figure 8 As shown, the second and fourth wing electrodes are in the open second state, while the first and third wing electrodes, as well as all the profile electrodes, are in the closed first state. In this case, information can be provided, represented as 142 / 144 / 141-143. Table 1 shows the combinations of signal connectivity and disconnection states that can be formed by adjusting the electrodes to the first and second states of the test strip with four profile electrodes.

[0046] Table 1

[0047]

[0048] The above describes the case where the resistance of all electrodes is negligible. However, if the resistance of the electrodes is not negligible, such as... Figure 8 As shown, assuming the profile electrodes are of equal length and each has a resistance of 1Ω, two non-adjacent electrode nodes, namely the first electrode node 121 (the intersection of the first and fourth profile electrodes) and the third electrode node 123 (the intersection of the second and third profile electrodes), have their rim electrodes divided into two equal parts. The left side of each node consists of half the length of the first and second profile electrodes, while the right side consists of the other half of the same length of the third and fourth profile electrodes. These two halves of the same length form a parallel circuit, and the resistance is detected as 1Ω through the first and third electrode contacts. If the second wing electrode, the third profile electrode, and the fourth profile electrode are set to the open second state, while the other electrodes are set to the closed first state, the signal on / off state of the test strip still appears as 142 / 144 / 141-143, but the resistance detected through the first and third electrode contacts becomes 2Ω. It should be noted that the previous analysis for cases where the resistance is not negligible also applies to cases where the number of wing electrodes is less than the number of profile electrodes, or even when there are no wing electrodes.

[0049] Example 5

[0050] like Figure 3-2 As shown, in Figure 3-1 Based on this, the information-assigning electrode also includes a first axial electrode composed of a first sub-axial electrode 151 and a third sub-axial electrode 153, and a second axial electrode composed of a second sub-axial electrode 152 and a fourth sub-axial electrode 154. The two ends of the first axial electrode are located at the second electrode node and the fourth electrode contact, respectively, that is, at the intersection of the first and second profile electrodes and the intersection of the third and fourth profile electrodes. The intersection points of the two profile electrodes are not adjacent. The two ends of the second axial electrode are located at the first electrode contact and the third electrode contact, respectively, that is, at the intersection of the first and fourth profile electrodes and the intersection of the second and third profile electrodes. The intersection points of the two profile electrodes are not adjacent. The first and second axial electrodes intersect at axial node 161. In other cases, only the first axial electrode or only the second axial electrode may exist. When the forming path of the rim electrode is a polygon, an axis electrode can be formed between the intersection points of any two non-adjacent contour electrodes. When axis electrodes intersect, they can intersect at axis nodes and form sub-axis electrodes. The more axis electrodes there are, the more axis nodes there are, and an axis electrode can be divided into more sub-axis electrodes. Sub-axis electrodes can be configured as a closed first state or an open second state.

[0051] like Figure 9 As shown, in Figure 5 Based on this, the information-assigning electrode also includes a first axial electrode composed of a first sub-axial electrode 151 and a third sub-axial electrode 153, and a second axial electrode composed of a second sub-axial electrode 152 and a fourth sub-axial electrode 154. The sub-axial electrodes can be configured in a closed first state or an open second state. The two ends of the first axial electrode are located at the second electrode node (the intersection of the first profile electrode and the second profile electrode) and the fourth electrode node (the intersection of the third profile electrode and the fourth profile electrode), respectively, and the second electrode node and the fourth electrode node are not adjacent. The two ends of the second axial electrode are located at the first electrode node (the intersection of the first profile electrode and the fourth profile electrode) and the third electrode node (the intersection of the second profile electrode and the third profile electrode), respectively, and the first electrode node and the third electrode node are not adjacent. The first axial electrode and the second axial electrode intersect at axis node 161. In other cases, only the first axial electrode or only the second axial electrode may exist.

[0052] Example 6

[0053] like Figure 10-1As shown, the forming path of the rim electrode in the information imparting electrode is a convex hexagon. The first profile electrode 111, the second profile electrode 112, the third profile electrode 113, the fourth profile electrode 114, the fifth profile electrode 115, and the sixth profile electrode 116 form the rim electrode. The first profile electrode 111 and the second profile electrode 112 are connected through the second electrode node 122, the second profile electrode 112 and the third profile electrode 113 are connected through the third electrode node 123, and the third profile electrode 113 and the fourth profile electrode 114 are connected through the fourth electrode node 124. 114 and the fifth profile electrode 115 are connected through the fifth electrode node 125. The fifth profile electrode 115 and the sixth profile electrode 116 are connected through the sixth electrode node 126. The first profile electrode 111 and the sixth profile electrode 116 are connected through the first electrode node 121. The first wing electrode 131, the second wing electrode 132, the third wing electrode 133, the fourth wing electrode 134, the fifth wing electrode 135 and the sixth wing electrode 136 are arranged around the forming path of the rim electrode, that is, around the edge of the convex hexagon. The number of wing electrodes is the same as the number of profile electrodes. Specifically, the first end of the first wing electrode 131 is connected to the first electrode node 121, and the second end of the first wing electrode is connected to the first electrode contact 141; the first end of the second wing electrode 132 is connected to the second electrode node 122, and the second end of the second wing electrode is connected to the second electrode contact 142; the first end of the third wing electrode 133 is connected to the third electrode node 123, and the second end of the third wing electrode is connected to the third electrode contact 143; the first end of the fourth wing electrode 134 is connected to the fourth electrode node 124, and the second end of the fourth wing electrode is connected to the fourth electrode contact 144; the first end of the fifth wing electrode 135 is connected to the fifth electrode node 125, and the second end of the fifth wing electrode is connected to the fifth electrode contact 145; and the first end of the sixth wing electrode 136 is connected to the sixth electrode node 126, and the second end of the sixth wing electrode is connected to the sixth electrode contact 146.

[0054] like Figure 10-2As shown, the information-assigning electrodes also include a first axial electrode 15, a second axial electrode 15', and a third axial electrode 15''. The two ends of the first axial electrode 15 are located on the third electrode node 123 and the sixth electrode node 126, respectively. The third and sixth electrode nodes are not adjacent. The first axial electrode 15 can form a quadrilateral by first connecting to the remaining adjacent first electrode nodes 121 and second electrode nodes 122, and then by connecting to the remaining adjacent fourth electrode nodes 124 and fifth electrode nodes 125, respectively. Similarly, the two ends of the second axial electrode 15' are located on the first electrode nodes 121 and fourth electrode nodes 124, respectively. The first and fourth electrode nodes are not adjacent. The second axial electrode 15' can form a quadrilateral by first connecting to the remaining adjacent second electrode nodes 122 and third electrode nodes 123, and then by connecting to the remaining adjacent fifth electrode nodes 125 and sixth electrode nodes 126, respectively. The two ends of the third axial electrode 15'' are located on the second electrode node 122 and the fifth electrode node 125, respectively. The second electrode node and the fifth electrode node are not adjacent. The third axial electrode 15'' can form a quadrilateral by first connecting end to end with the remaining adjacent second electrode node 122 and fourth electrode node 124. The third axial electrode 15'' can also form another quadrilateral by connecting end to end with the remaining adjacent first electrode node 121 and sixth electrode node 126. Of course, in addition to these three axial electrodes, more axial electrodes can be set for this information-assigning electrode. These axial electrodes are formed between the intersections of any two non-adjacent profile electrodes, but unlike the first axial electrode 15, the second axial electrode 15', and the third axial electrode 15'', they cannot be connected to the intersections of at least two remaining adjacent profile electrodes to form a quadrilateral.

[0055] exist Figure 10-1 Both the center electrode and the wing electrode are in a closed first state. In this case, information can be provided, represented as 141-142-143-144-145-146, through the... Figure 10-1 The profile electrode and wing electrode in the middle are adjusted to a closed first state or an open second state, or the... Figure 10-1 Based on the information contained in the axial electrode, the profile electrode, wing electrode, and axial electrode are adjusted to either a closed first state or an open second state. Table 2 shows the signal connection or disconnection combinations that can be formed by adjusting the electrodes to the first and second states of the test strip with four profile electrodes. The presence of the first axial electrode 15, the second axial electrode 15', and the third axial electrode 15'' increases the number of on / off state combinations by three (highlighted in gray).

[0056] Table 2

[0057]

[0058] Example 7

[0059] like Figure 11-1 As shown, the forming path of the rim electrode of the information-assigning electrode is a convex octagon. The first profile electrode 111, the second profile electrode 112, the third profile electrode 113, the fourth profile electrode 114, the fifth profile electrode 115, the sixth profile electrode 116, the seventh profile electrode 117, and the eighth profile electrode 118 form the rim electrode. The first profile electrode 111 and the second profile electrode 112 are connected through the second electrode node 122, the second profile electrode 112 and the third profile electrode 113 are connected through the third electrode node 123, the third profile electrode 113 and the fourth profile electrode 114 are connected through the fourth electrode node 124, and the fourth profile electrode 114 and the fifth profile electrode 115 are connected through the fifth electrode node 125. The fifth profile electrode... Electrode 115 and the sixth profile electrode 116 are connected through the sixth electrode node 126. Electrode 116 and the seventh profile electrode 117 are connected through the seventh electrode node 127. Electrode 117 and the eighth profile electrode 118 are connected through the eighth electrode node 128. Electrode 111 and the eighth profile electrode 118 are connected through the first electrode node 121. The first wing electrode 131, the second wing electrode 132, the third wing electrode 133, the fourth wing electrode 134, the fifth wing electrode 135, the sixth wing electrode 136, the seventh wing electrode 137 and the eighth wing electrode 138 are arranged around the forming path of the rim electrode, that is, around the edge of the convex octagon. The number of wing electrodes is the same as the number of profile electrodes. Wherein, the first end of the first wing electrode 131 is connected to the first electrode node 121, and the second end of the first wing electrode is connected to the first electrode contact 141; the first end of the second wing electrode 132 is connected to the second electrode node 122, and the second end of the second wing electrode is connected to the second electrode contact 142; the first end of the third wing electrode 133 is connected to the third electrode node 123, and the second end of the third wing electrode is connected to the third electrode contact 143; the first end of the fourth wing electrode 134 is connected to the fourth electrode node 124, and the second end of the fourth wing electrode is connected to the fourth electrode contact 144; the first end of the fifth wing electrode 135 is connected to the fifth electrode node 125, and the second end of the fifth wing electrode is connected to the fifth electrode contact 145; the first end of the sixth wing electrode 136 is connected to the sixth electrode node 126, and the second end of the sixth wing electrode is connected to the sixth electrode contact 146; the first end of the seventh wing electrode 137 is connected to the seventh electrode node 127, and the second end of the seventh wing electrode is connected to the seventh electrode contact 147; the first end of the eighth wing electrode 138 is connected to the eighth electrode node 128, and the second end of the eighth wing electrode is connected to the eighth electrode contact 148. Figure 11-2As shown, the information-assigning electrode also includes a first axial electrode 15 and a second axial electrode 15'. The two ends of the first axial electrode 15 are located at the first electrode node 121 (the intersection of the first profile electrode and the eighth profile electrode) and the fourth electrode node 124 (the intersection of the third profile electrode and the fourth profile electrode), respectively. The first electrode node and the fourth electrode node are not adjacent. Furthermore, the first axial electrode 15 is first connected end-to-end with the remaining adjacent second electrode node 122 (the intersection of the first profile electrode and the second profile electrode) and third electrode node 123 (the intersection of the second profile electrode and the third profile electrode) to form a quadrilateral. The first axial electrode 15 is then connected end-to-end with the remaining adjacent fifth electrode node 125 (the intersection of the fourth profile electrode and the fifth profile electrode). The first axial electrode 15 can form a quadrilateral by connecting the first axial electrode 15 with the remaining adjacent second electrode nodes 122 and third electrode nodes 123. The first axial electrode 15 can then form another quadrilateral by connecting the first axial electrode 15 with the remaining adjacent fifth electrode nodes 125 and eighth electrode nodes 128. The two ends of the second axial electrode 15' are located on the fifth electrode node 125 and the eighth electrode node 128, respectively. The fifth electrode node and the eighth electrode node are not adjacent. The second axial electrode 15' can form a quadrilateral by first connecting with the remaining adjacent sixth electrode node 126 and seventh electrode node 127. The second axial electrode 15' can also form another quadrilateral by connecting with the remaining adjacent first electrode node 121 and fourth electrode node 124. Alternatively, the second axial electrode 15' can form a quadrilateral by first connecting with the remaining adjacent second electrode node 122 and fourth electrode node 124. The second axial electrode 15' can also form another quadrilateral by connecting with the remaining adjacent first electrode node 121 and second electrode node 122. Based on the aforementioned logical analysis, the axial electrode in this device, which is similar to the aforementioned axial electrode, can be connected with at least two remaining adjacent sets of electrode nodes to form an N-sided shape, wherein the number of electrode nodes in each set is not less than two, and N≥4. Thus, the number of such axial electrodes is 2+2+2+1+1=8. Similar to the information-assigning electrode with a convex hexagonal forming path that has already been described, the existence of the aforementioned eight axial electrodes supplements the number of on / off state combinations that the information-assigning electrode can provide. When the resistance is negligible, in the information-assigning electrode with a convex octagonal forming path, more on / off state combinations can be obtained by configuring the contour electrode, wing electrode, and axial electrode (or sub-axial electrode) in a closed first state and an open second state.Similarly, in the case where the number of wing electrodes is less than the number of profile electrodes or there are no wing electrodes, according to the aforementioned logical analysis, the shaft electrode in the device, which is the same as the aforementioned shaft electrode, can be connected with at least one remaining adjacent set of electrode nodes to form an N-sided polygon, and N≥3. When the resistance is negligible, more combinations of on / off states can be obtained by configuring the profile electrode, wing electrodes (the number of which is less than the number of profile electrodes or there are no wing electrodes) and shaft electrodes (or sub-axis electrodes) in a closed first state and an open second state.

[0060] Example 8

[0061] like Figure 11-3 As shown, the forming path of the rim electrode of the information-assigned electrode is a convex octagon. Between two non-adjacent electrode nodes, i.e., between the intersection points of non-adjacent profile electrodes, a first axial electrode 15, a second axial electrode 15', a third axial electrode 15'', and a fourth axial electrode 15''' are formed, intersecting at the same axial node 161. The lengths of the sub-axial electrodes of the third axial electrode 15'' and the fourth axial electrode 15''' above the first axial electrode 15 are equal, and the lengths of the first profile electrode 111 and the eighth profile electrode 118 are equal. If the aforementioned sub-axial electrodes and the profile electrodes... The first electrode and the second axial electrode 15' below the first axial electrode 15 are in a closed first state, while the other profile electrodes and the second axial electrodes are in an open second state. The intersection of the first profile electrode 111 and the eighth profile electrode 118 and the axial node are connected in parallel through the first profile electrode plus the second axial electrode 15'' above the first axial electrode 15, and the eighth profile electrode plus the second axial electrode 15''' above the first axial electrode 15. Assuming that the resistance of the profile electrode and the second axial electrode are both 1Ω, information that the resistance is 2Ω is detected between the first electrode contact and the fifth electrode contact from left to right.

[0062] Although the above embodiments all use convex polygons to list the forming paths of the rim electrode, it does not mean that the forming path of the rim electrode can only be a convex polygon. The forming path of the rim electrode can also be a concave polygon, or even be formed by a wavy outline electrode. In other words, the rim electrode is formed by connecting the outline electrodes end to end, without limiting the trajectory and shape of the outline electrode.

[0063] The above embodiments are only used to illustrate the technical solution of this utility model more clearly, and are therefore only examples, and cannot be used to limit the protection scope of this utility model.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms “comprising” and “having”, and any variations thereof, in the specification and claims of this invention are intended to cover non-exclusive inclusion.

[0065] In the description of this utility model, technical terms such as "first," "second," "third," and "fourth" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.

[0066] In this document, the terms "embodiment" and "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments.

[0067] The above embodiments are merely illustrative of the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A test strip for detecting the content of an analyte, comprising a substrate, an electrode system, and a protective layer, wherein the electrode system is provided with a reagent capable of reacting with the analyte, characterized in that, The electrode system includes an information-assigning electrode and a signal input electrode. The information-assigning electrode includes an electrode contact and a rim electrode formed by connecting at least four profile electrodes end to end. At least two of the profile electrodes are connected by an electrode node. The information-assigning electrode also includes a wing electrode with one end connected to the electrode node and the other end connected to the electrode contact. The profile electrode and the wing electrode are configured in a closed first state or an open second state.

2. The test strip for detecting the content of an analyte according to claim 1, characterized in that, The number of wing electrodes is the same as the number of profile electrodes and they are arranged around the forming path of the rim electrode.

3. A test strip for detecting the content of an analyte according to claim 2, characterized in that, An axial electrode is formed between the intersection of any two non-adjacent profile electrodes, and the axial electrode is configured in a closed first state or an open second state.

4. A test strip for detecting the content of an analyte according to claim 3, characterized in that, The axial electrode is connected to the intersection of the remaining at least two adjacent sets of profile electrodes to form an N-sided polygon, wherein the number of intersections of each set of profile electrodes is not less than two, and N≥4.

5. A test strip for detecting the content of an analyte according to claim 3, characterized in that, Any two of the said axial electrodes intersect at a unique axial node and form a split axial electrode, which is configured in a closed first state or an open second state.

6. A test strip for detecting the content of an analyte according to claim 1, characterized in that, The rim electrode between the intersection points of two non-adjacent profile electrodes is divided into two equal parts and connected in parallel.

7. A test strip for detecting the content of an analyte according to claim 5, characterized in that, The intersection of the profile electrodes and the axis node are connected in parallel by profile electrodes and axis electrodes of the same length.

8. A test strip for detecting the content of an analyte according to any one of claims 1-7, characterized in that, The substrate includes a first surface and a second surface, the information imparting electrode is disposed between the first surface and the first protective layer, and the signal input electrode is disposed between the second surface and the second protective layer.

9. A test strip for detecting the content of an analyte according to claim 8, characterized in that, The information-assigned electrode is disposed on the first surface of the substrate by any one of printing, printing, spraying, coating, sputtering, or any combination of two or more methods.

10. A test strip for detecting the content of an analyte according to claim 9, characterized in that, It also includes a partition layer and a cover layer. The partition layer is disposed between the cover layer and the first protective layer. The substrate, the partition layer, and the cover layer together form a sample inlet channel.

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