Connector, microneedle assembly, and monitoring device

Abstract

The present application belongs to the technical field of electronics. Provided in the embodiments of the present application are a connector, a microneedle assembly and a monitoring device. The connector comprises a first fixing member and a second fixing member. A first fitting surface of the first fixing member is parallel to a second fitting surface of the second fixing member, and the second fitting surface is perpendicular to a third fitting surface of the second fixing member. The first fixing member and the second fixing member are respectively mounted on two sides of a microneedle electrode, and the first fitting surface and the second fitting surface respectively face a first surface and a second surface of the microneedle electrode. The second fixing member is mounted to a circuit board, with the third fitting surface facing one surface of the circuit board, so that the first surface and the second surface of the microneedle electrode are perpendicular to the surface of the circuit board, which enables the microneedle electrode to be mounted perpendicular to and electrically connected to the circuit board, thereby ensuring high perpendicularity of the microneedle electrode. A plurality of microneedle electrodes can be connected perpendicularly to the circuit board by means of connectors, respectively, thereby ensuring the perpendicularity consistency and height consistency of different microneedle electrodes. The connector can serve as a clamping portion to avoid damage to the microneedle electrode.

Description

Connector, microneedle assembly and monitoring device

[0001] The present application claims priority to the Chinese patent application No. 202410866581.0, filed on June 28, 2024, and entitled "Connector, microneedle assembly and monitoring device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of electronic technology, in particular to a connector, a microneedle assembly and a monitoring device. BACKGROUND

[0003] In recent years, microneedle arrays have been rapidly developed in the fields of transdermal drug delivery systems, in-vivo physiological index monitoring, vaccine injection, wound repair, etc., and have broad application prospects. Among them, in-vivo physiological index monitoring is an important application of microneedle arrays, and monitoring patches and wearable monitoring devices based on microneedle arrays have also been widely researched.

[0004] Taking a microneedle array patch as an example, the patch can include a substrate, a circuit board and a plurality of microneedle electrodes. The plurality of microneedle electrodes can form a microneedle array on the substrate. In actual use, the substrate of the patch can be attached to the skin, and the microneedle array can penetrate the skin to detect parameters related to physiological indicators, such as subcutaneous molecules, to monitor human physiological indicators. The microneedle electrodes are electrically connected to the circuit board, and the microneedle electrodes can transmit the generated electrical signals to the circuit board. The substrate of the patch is usually attached to the skin, and the circuit board is attached inside the substrate. The microneedle electrodes in the microneedle array need to be connected vertically to the circuit board so that the microneedle electrodes can penetrate into the subcutis and ensure the detection performance of the microneedle electrodes. Therefore, a connector capable of achieving vertical electrical connection of the microneedle electrodes and the circuit board is needed. SUMMARY

[0005] The embodiments of the present application provide a connector, a microneedle assembly and a monitoring device. The connector can achieve vertical assembly and electrical connection of microneedle electrodes and a circuit board, and ensure the verticality consistency and height consistency of different microneedle electrodes, which is beneficial to improve the detection accuracy and reliability.

[0006] A first aspect of the embodiments of the present application provides a connector for achieving electrical connection of microneedle electrodes and a circuit board, comprising a first fixing member and a second fixing member. The first fixing member comprises a first mating surface. The second fixing member comprises a second mating surface and a third mating surface. The second mating surface is parallel to the first mating surface, and the second mating surface is perpendicular to the third mating surface.

[0007] The first fixing member and the second fixing member are respectively arranged on the two sides of the microneedle electrode, which reduces or avoids the bending of the microneedle electrode, avoids the risk of friction damage of the electrode layer caused by the bending of the microneedle electrode, and ensures the integrity of the electrode layer.

[0008] The first matching surface is used to be opposite and parallel to the first surface of the microneedle electrode, and the second matching surface is used to be opposite and parallel to the second surface of the microneedle electrode. That is, the first matching surface and the second matching surface are opposite and parallel to the two surfaces of the microneedle electrode, respectively, which can ensure the flatness of the microneedle electrode as a whole, and is beneficial to improve the perpendicularity of the microneedle electrode and the circuit board.

[0009] The second fixing member is also used to be assembled with the circuit board, and the third matching surface is used to be opposite and parallel to one surface of the circuit board. The first matching surface and the second matching surface are parallel to the first surface and the second surface of the microneedle electrode, respectively, and perpendicular to the third matching surface, and the third matching surface is parallel to one surface of the circuit board, so that the first surface and the second surface of the microneedle electrode can be perpendicular to one surface of the circuit board, realizing the perpendicular assembly of the microneedle electrode and the circuit board, and the height direction of the microneedle electrode can be perpendicular to the circuit board. The high perpendicularity of the microneedle electrode and the circuit board is ensured, which is beneficial to improve the accuracy and reliability of detection.

[0010] When the second fixing member is assembled with the microneedle electrode, the second fixing member can realize electrical connection with the first electrode layer on the second surface of the microneedle electrode, and when the second fixing member is assembled with the circuit board, the second fixing member realizes electrical connection with the circuit board, so that the vertical electrical connection of the microneedle electrode and the circuit board is realized through the second fixing member, and the microneedle electrode can realize the vertical assembly and electrical connection with the circuit board through the connector with a right angle, and has high perpendicularity.

[0011] The structure design of the connector is relatively simple. In actual use, the first fixing member and the second fixing member of the connector are assembled with the microneedle electrode, and then the second fixing member is assembled with the circuit board, so that the vertical connection of the microneedle electrode and the circuit board can be completed, and the processing and assembly process is simple and convenient for production. The connector also has a more extensive application range, and has less restrictions on the forming material, forming process and structure size of the microneedle structure in the microneedle electrode, and has high applicability. Moreover, multiple microneedle electrodes can realize the vertical assembly and electrical connection with the circuit board through the connector, which can ensure the consistency of the perpendicularity of different microneedle electrodes assembled on the circuit board. By controlling the relative position between the connector and the microneedle electrode during assembly, the height of the microneedle electrode exposed to the outside of the connector can be controlled, and the consistency of the height of different microneedle electrodes exposed to the outside of the connector can be ensured.

[0012] The first fixing member and the second fixing member of the connector are assembled on the two opposite sides of the microneedle electrode, respectively. The first fixing member and the second fixing member can be used as holders to provide forceable clamping parts. In the subsequent assembly or assembly process of the microneedle assembly, the problem of damage to the modification film layer, electrode layer and the like on the microneedle electrode caused by directly clamping or contacting the microneedle electrode can be avoided, and the performance of the microneedle electrode can be ensured.

[0013] In a possible implementation, the first fitting surface has a first insertion part, which is used for plug-in cooperation with a first insertion site on the microneedle electrode. The first insertion part can be inserted into the first insertion site and achieve interference fit with the first insertion site, so that the first fixing member can be stably assembled and fixed with the microneedle electrode.

[0014] The second fitting surface has a second insertion part, which is used for plug-in cooperation with a second insertion site on the microneedle electrode. The second insertion part can be inserted into the second insertion site and achieve interference fit with the second insertion site, so that the second fixing member can be stably assembled and fixed with the microneedle electrode.

[0015] The first insertion part and the second insertion part can play the role of alignment and limiting for the microneedle electrode. By adjusting the height positions of the first insertion part and the second insertion part on the first fixing member and the second fixing member, the relative positions of the microneedle electrode and the first fixing member and the second fixing member in assembly can be adjusted, so as to control the height of the microneedle electrode exposed outside the connector. Under the condition of ensuring high perpendicularity connection between the microneedle electrode and the circuit board, the perpendicularity consistency and the height consistency of different microneedle electrodes are ensured.

[0016] In a possible implementation, the third fitting surface has a third insertion site, which is used for plug-in cooperation with a third insertion part on one surface of the circuit board. The third insertion part can be inserted into the third insertion site and achieve interference fit with the third insertion site, so that the second fixing member can be stably assembled and fixed with the microneedle electrode, and then the microneedle electrode is stably assembled on the circuit board, so as to ensure high perpendicularity between the microneedle electrode and the circuit board.

[0017] In a possible implementation, the second fitting surface is provided with a plurality of first electric connection parts, which are used for electrically connecting a plurality of first electrode layers on the second surface of the microneedle electrode when the second fixing member is assembled with the microneedle electrode. Each microneedle structure of the microneedle electrode has a first electrode layer, and the plurality of first electric connection parts can be in contact with and electrically connected to the first electrode layers of the plurality of microneedle structures, that is, the first electric connection parts are one-to-one electrically connected to the microneedle structures and the first electrode layers on the microneedle structures.

[0018] The third fitting surface is provided with a plurality of second electric connection parts corresponding to the plurality of first electric connection parts, that is, the first electric connection parts and the second electric connection parts are one-to-one electrically connected. When the second fixing member is assembled with the circuit board, the plurality of second electric connection parts are used for electrically connecting a plurality of first conductive structures on one surface of the circuit board, that is, the second electric connection parts are one-to-one electrically connected to the first conductive structures on the circuit board.

[0019] In this way, through the plurality of first electrical connection parts and the plurality of second electrical connection parts, the plurality of microneedle structures and the first electrode layer on the microneedle structure are respectively connected to the plurality of first conductive structures on the circuit board, that is, the first electrode layer of the microneedle structure is one-to-one electrically connected to the first conductive structure, realizing independent corresponding electrical connection of each microneedle structure and the circuit board, so that the electrical signal on each microneedle structure can be individually led out to the circuit board, which is beneficial to effective identification of potential influence scene signals, abnormal state signals and the like, realizes early warning of error values, values beyond the normal range and the like, and further improves the accuracy and reliability of detection.

[0020] In a possible implementation, the second cooperation face is provided with a plurality of third electrical connection parts, each of which extends to the third cooperation face side, and when the second fixing member is assembled with the microneedle electrode, the plurality of third electrical connection parts are used to electrically connect to the plurality of first electrode layers on the second surface of the microneedle electrode.

[0021] When the second fixing member is assembled with the circuit board, one end of the plurality of third electrical connection parts extending to the third cooperation face side is used to electrically connect to the plurality of first conductive structures on the circuit board. Through the third electrical connection part, electrical connection between the first electrode layer on the microneedle electrode and the circuit board can be realized, and independent corresponding electrical connection of each microneedle structure and the circuit board is realized, which simplifies the structural design of the electrical connection part on the second fixing member, is beneficial to reducing assembly process steps, and improves production and assembly efficiency.

[0022] In a possible implementation, the first fixing member further includes a fourth cooperation face perpendicular to the first cooperation face. The first fixing member is further used to assemble with the circuit board, and the fourth cooperation face is used to be opposite and parallel to one face of the circuit board. That is, the first cooperation face of the first fixing member is opposite and parallel to the first surface of the microneedle electrode, the fourth cooperation face of the first fixing member is opposite and parallel to one face of the circuit board, and the first cooperation face is perpendicular to the fourth cooperation face, which is beneficial to enhancing the perpendicularity of the perpendicular assembly between the microneedle electrode and the circuit board.

[0023] In a possible implementation, the fourth cooperation face has a fourth plug-in position, and the fourth plug-in position is used to be plugged and matched with a fourth plug-in part on the circuit board. When the microneedle electrode is assembled on the circuit board through the connector, the fourth plug-in position of the first fixing member can be plugged and assembled with the fourth plug-in part on the circuit board, realizing stable assembly of the first fixing member and the circuit board, and further improving the firmness of assembly of the connector, the microneedle electrode and the circuit board.

[0024] In a possible implementation, the first fitting surface is provided with a plurality of fourth electric connection parts, which are used to electrically connect the second electrode layers on the plurality of microneedle structures of the microneedle electrode when the first fixing member is assembled with the microneedle electrode. The fourth fitting surface is provided with a plurality of fifth electric connection parts corresponding to the plurality of fourth electric connection parts, which are electrically connected with the plurality of second conductive structures on one surface of the circuit board when the first fixing member is assembled with the circuit board.

[0025] The fourth electric connection parts and the fifth electric connection parts can electrically connect the second electrode layers on the first surface of the microneedle electrode with the second conductive structures on the circuit board, realize the vertical electrical connection between the microneedle electrode with the electrode layers on both surfaces and the circuit board, and electrically connect the second electrode layers on the plurality of microneedle structures with the second conductive structures on the circuit board one by one, realizing the independent corresponding electrical connection between each microneedle structure and the circuit board.

[0026] In a possible implementation, the first fitting surface is provided with a plurality of sixth electric connection parts, each of which extends to the fourth fitting surface side, which are used to electrically connect the second electrode layers on the plurality of microneedle structures of the microneedle electrode when the first fixing member is assembled with the microneedle electrode. When the first fixing member is assembled with the circuit board, the plurality of sixth electric connection parts extend to one end of the fourth fitting surface side, which are used to electrically connect the plurality of second conductive structures on the circuit board. The sixth electric connection parts can electrically connect the second electrode layers on the microneedle electrode with the circuit board, and realize the independent corresponding electrical connection between each microneedle structure and the circuit board, which can be applied to the assembly of the microneedle electrode with the electrode layers on both surfaces, and simplify the structural design of the electric connection parts on the first fixing member.

[0027] In a possible implementation, the first fixing member includes an insulating first body part, and a part of the outer surface of the first body part forms the first fitting surface. The second fixing member includes an insulating second body part, and a part of the outer surface of the second body part forms the second fitting surface and the third fitting surface. The first insertion part is arranged on the first body part, and the second insertion part, the third insertion part, the first electric connection part, the second electric connection part, etc. are arranged on the second body part, which are simple in structure design and easy to realize.

[0028] In a possible implementation, the second body part includes a block structure, and a part of the outer surface of the block structure forms the second fitting surface and the third fitting surface. This further simplifies the structural design of the second fixing member, ensures that the connector can realize the high-precision connection between the microneedle electrode and the circuit board, simplifies the structure of the connector, and reduces the difficulty of structural design and production cost.

[0029] Alternatively, the second main body part comprises a first fixing part and a second fixing part, the first fixing part and the second fixing part are perpendicular, so that the second main body part can have an L-shaped structure. An outer surface of the first fixing part forms a second matching surface, and an outer surface of the second fixing part forms a third matching surface. The mutual perpendicularity of the second matching surface and the third matching surface is ensured, the perpendicularity between the microneedle electrode and the circuit board is ensured, and the structure design is simple and easy to implement.

[0030] In a possible implementation, the first main body part comprises a plate-shaped structure, and a part of an outer surface of the plate-shaped structure forms the first matching surface. The structure design of the first fixing part is simplified, and the difficulty of structure design and the production cost are reduced.

[0031] Alternatively, the first main body part comprises a third fixing part and a fourth fixing part, the third fixing part and the fourth fixing part are perpendicular, so that the first main body part can have an L-shaped structure. An outer surface of the third fixing part forms the first matching surface, and an outer surface of the fourth fixing part forms a fourth matching surface perpendicular to the first matching surface, and the fourth matching surface is used to be opposite and parallel to one side of the circuit board. The mutual perpendicularity of the first matching surface and the fourth matching surface is ensured, the assembly perpendicularity of the microneedle electrode and the circuit board is enhanced, the structure design is simple, and the implementation is easy.

[0032] In a possible implementation, the first main body part further comprises a first assembly surface, the first assembly surface and the first matching surface are located on opposite sides of the first main body part respectively, and the first assembly surface has a first limiting structure. The second main body part further comprises a second assembly surface, the second assembly surface and the second matching surface are located on opposite sides of the second main body part respectively, and the second assembly surface has a second limiting structure.

[0033] The microneedle electrode and the connector are assembled to form a microneedle assembly, and the microneedle assembly is assembled on the circuit board through the connector to realize the assembly of the microneedle electrode and the circuit board. A plurality of microneedle assemblies can be arranged in sequence, so that a plurality of connectors are arranged in sequence on the circuit board, and the first limiting structure in one of the connectors is used to be inserted and matched with the second limiting structure of an adjacent connector. In this way, the connectors of adjacent two microneedle assemblies in the plurality of microneedle assemblies are inserted and matched through the first limiting structure and the second limiting structure, the plurality of microneedle assemblies are inserted together, the alignment accuracy between the microneedle assemblies is improved, the alignment effect between the microneedle assemblies is enhanced, and the detection accuracy is improved. And it is easy to assemble and implement, and it is also beneficial to improve the assembly stability of the plurality of microneedle assemblies and the circuit board.

[0034] The second limiting structure of the connector at the head end is used for plug-in cooperation with the third limiting structure on the circuit board, and the first limiting structure of the connector at the tail end is used for plug-in cooperation with the fourth limiting structure on the circuit board. The positioning of the microneedle assembly when assembled with the circuit board through the connector is facilitated, the third limiting structure and the fourth limiting structure limit the multiple connectors (microneedle assemblies) plugged together, further enhancing the assembly stability of the multiple microneedle assemblies and the circuit board, and ensuring high perpendicularity assembly and electrical connection of the microneedle electrodes and the circuit board.

[0035] In a possible implementation, the first insertion part and the second insertion part include protruding structures, and the third insertion part and the fourth insertion part include slot structures, which are simple in structure design, easy to implement, and conducive to reducing production and assembly difficulty.

[0036] A second aspect of the embodiments of the present application provides a microneedle assembly, which includes a microneedle electrode and any of the above connectors. The microneedle electrode includes a first surface and a second surface opposite to each other. The first fixing member and the second fixing member of the connector are assembled with the microneedle electrode respectively. The first mating surface of the first fixing member is opposite to and parallel to the first surface, and the second mating surface of the second fixing member is opposite to and parallel to the second surface. The second fixing member is electrically connected with the microneedle electrode. The perpendicular assembly and electrical connection of the microneedle electrode and the circuit board can be realized through the connector, and the perpendicularity consistency of multiple microneedle electrodes and the height consistency of multiple microneedle electrodes exposed to the connector can be ensured. In addition, the connector can also provide a clamping site for the assembly of the microneedle assembly, avoiding damage caused by directly clamping or contacting the microneedle electrode.

[0037] In a possible implementation, the first surface and the second surface are respectively located on two sides of the microneedle electrode opposite to each other along the thickness direction. The microneedle electrode includes a base, multiple spaced microneedle structures, and multiple spaced first electrode layers. The multiple microneedle structures are located on one side of the base along the height direction.

[0038] The first electrode layer is located on the second surface, and each microneedle structure has one first electrode layer. The first electrode layer on each microneedle structure extends to the base. The first fixing member and the second fixing member are assembled with the base respectively, and the second fixing member is in contact with the first electrode layer on the base to realize electrical connection. The first fixing member and the second fixing member of the connector are assembled with the base of the microneedle electrode respectively, which reduces or avoids the influence of the arrangement of the connector on the microneedle structure of the microneedle electrode, and reduces the design difficulty of realizing perpendicular assembly and electrical connection. In addition, the alignment assembly in the horizontal plane can be realized by using the base with a larger size and the first fixing member and the second fixing member of the connector, which improves the assembly stability of the microneedle electrode and the connector, and is conducive to ensuring the flatness of the microneedle electrode, and further ensuring the high perpendicularity of the microneedle electrode and the circuit board.

[0039] In a possible implementation, the microneedle electrode further comprises a plurality of spaced second electrode layers, the second electrode layers are located on the first surface, each microneedle structure has one second electrode layer, and the second electrode layer on each microneedle structure extends to the base, and the first fixing member is in contact with the second electrode layer on the base to realize electrical connection.

[0040] A third aspect of the embodiment of the application provides a monitoring device, comprising a circuit board, a microneedle electrode and the connector of any one of the above.

[0041] The first fixing member and the second fixing member of the connector are assembled with the microneedle electrode, the first fitting surface of the first fixing member is opposite and parallel to the first surface, the second fitting surface of the second fixing member is opposite and parallel to the second surface, and the second fixing member is electrically connected with the microneedle electrode. The second fixing member is assembled with the circuit board and realizes electrical connection, and the third fitting surface of the second fixing member is opposite and parallel to one surface of the circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0042] FIG. 1 is a structural schematic diagram of a monitoring device provided by the embodiment of the application;

[0043] FIG. 2 is a front structural schematic diagram of a connector provided by the embodiment of the application;

[0044] FIG. 3 is a top view schematic diagram of the connector in FIG. 2;

[0045] FIG. 4 is a right side view schematic diagram of the connector in FIG. 2;

[0046] FIG. 5 is a partial structural right side view schematic diagram of the assembly of the connector and the microneedle electrode in FIG. 2 to form a microneedle assembly;

[0047] FIG. 6 is a partial structural schematic diagram of the assembly of the microneedle assembly and the circuit board in the monitoring device in FIG. 5;

[0048] FIG. 7 is a front structural schematic diagram of the first fixing member in FIG. 4;

[0049] FIG. 8 is a front structural schematic diagram of the assembly of the first fixing member and the microneedle electrode in FIG. 7;

[0050] FIG. 9 is a front structural schematic diagram of the assembly of the first fixing member, the microneedle electrode and the second fixing member in FIG. 7;

[0051] FIG. 10 is a front structural schematic diagram of the microneedle assembly formed after the assembly of the first fixing member, the microneedle electrode and the second fixing member in FIG. 9;

[0052] FIG. 11 is a three-dimensional structural schematic diagram of the microneedle assembly in FIG. 10;

[0053] FIG. 12 is a front structural schematic diagram of the assembly of the microneedle assembly and the circuit board in FIG. 11;

[0054] Fig. 13 is a front view structural schematic diagram of the microneedle assembly and the circuit board in Fig. 11 after assembly;

[0055] Fig. 14 is a right side view schematic diagram of the connector and the plurality of microneedle electrodes in Fig. 2 after assembly;

[0056] Fig. 15 is a front view structural schematic diagram of another connector provided by the embodiment of the present application;

[0057] Fig. 16 is a right side view schematic diagram of the connector in Fig. 15;

[0058] Fig. 17 is a top view schematic diagram of the connector in Fig. 16;

[0059] Fig. 18 is a right side view schematic diagram of still another connector provided by the embodiment of the present application and the plurality of microneedle electrodes after assembly;

[0060] Fig. 19 is a right side view schematic diagram of still another connector provided by the embodiment of the present application and the microneedle electrode after assembly;

[0061] Fig. 20 is a top view schematic diagram of still another connector provided by the embodiment of the present application;

[0062] Fig. 21 is a top view schematic diagram of a circuit board provided by the embodiment of the present application;

[0063] Fig. 22 is a top view schematic diagram of the connector and the plurality of microneedle electrodes in Fig. 20 after assembly;

[0064] Fig. 23 is a front view schematic diagram of the circuit board in Fig. 21;

[0065] Fig. 24 is a right side view schematic diagram of the circuit board in Fig. 21;

[0066] Fig. 25 is a top view schematic diagram of still another connector provided by the embodiment of the present application;

[0067] Fig. 26 is a top view schematic diagram of still another connector provided by the embodiment of the present application and the plurality of microneedle electrodes after assembly.

[0068] Label explanation: 100-monitoring device; 101-substrate; 102-microneedle assembly; 10-microneedle electrode; 10a-first electrode; 10b-second electrode; 10c-third electrode; 11-microneedle structure; 12-base; 121-first insertion site; 122-second insertion site; 13-first surface; 14-second surface; 15-first electrode layer; 16-second electrode layer; 17-sensing layer; 18-reference layer; 20-connector; 21-first fixing piece; 21a-first main body part; 21b-third fixed part; 21c-fourth fixed part; 211-first matching surface; 212-first insertion part; 213-fourth matching surface; 214-fourth electrical connection part; 215-fifth electrical connection part; 216-fourth insertion site; 217-first assembly surface; 218-first limiting structure; 22-second fixing piece; 22a-second main body part; 22b-first fixed part; 22c-second fixed part; 221-second matching surface; 222-third matching surface; 223-second insertion part; 224-third insertion site; 225-first electrical connection part; 226-second electrical connection part; 228-third electrical connection part; 229-second assembly surface; 230-second limiting structure; 103-circuit board; 113-third insertion part; 133-first conductive structure; 143-third limiting structure. DETAILED DESCRIPTION

[0069] The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0070] The embodiments of the present application provide a monitoring device, which can be a physiological index monitoring device, for in-vivo physiological index monitoring, such as in-vivo monitoring of physiological index parameters such as blood glucose, lactic acid, ketone body, etc. For example, the monitoring device can include but is not limited to a patch, a monitoring system coupled with an electronic device, etc. For example, the electronic device can be a reader / writer, a display device, etc., or the electronic device can be a smart watch, a smart bracelet, a smart wristband, a smart decoration device, etc.

[0071] In the embodiments of the present application, the monitoring device is taken as an example to illustrate the monitoring device.

[0072] FIG. 1 is a structural schematic diagram of a monitoring device according to an embodiment of the present application.

[0073] Referring to FIG. 1, the monitoring device 100 can include a substrate 101 and a microneedle assembly 102, the microneedle assembly 102 is arranged on the substrate 101, and the substrate 101 can be used to adhere to the skin, etc. The microneedle assembly 102 can include a plurality of microneedle electrodes 10, and the plurality of microneedle electrodes 10 can form a microneedle array in an array arrangement manner.

[0074] In actual use, the substrate 101 can be attached to the skin, the microneedle electrodes 10 of the microneedle assembly 102 can penetrate the skin and contact the subcutaneous body fluid, tissue and the like, and the physiological parameters of the subcutaneous molecules and the like can be detected to realize the monitoring of physiological indicators and the like.

[0075] The monitoring device 100 can further include a circuit board (not shown in the figure), which can be assembled on the substrate 101. For example, the circuit board can be attached and packaged inside the substrate 101, and the microneedle electrodes 10 can be electrically connected to the circuit board.

[0076] For example, the microneedle electrodes 10 can electrochemically react with the subcutaneous molecules and the like to form an electrical signal, and the microneedle electrodes 10 can transmit the electrical signal to the circuit board. The circuit board can be externally connected to electronic devices such as a display, a smart watch and the like to realize data processing and display of the electrical signal.

[0077] The plurality of microneedle electrodes 10 can include a first electrode 10a, a second electrode 10b and a third electrode 10c. For example, taking the example of using the enzyme electrode method to realize in vivo monitoring of physiological indicators by the microneedle electrodes 10, the first electrode 10a can be a working electrode, which can be used to electrochemically react with the subcutaneous molecules and the like to form an electrical signal. The second electrode 10b can be a counter electrode, which can form a loop with the working electrode. The third electrode 10c can be a reference electrode, which can provide a potential reference for the externally connected circuit board. The externally connected circuit board and electronic devices can apply a potential to the working electrode according to the potential reference of the reference electrode, and the purpose of monitoring can be achieved by detecting the current / electron changes generated by the electrochemical reaction on the working electrode.

[0078] Of course, in some examples, the plurality of microneedle electrodes 10 can also only include the first electrode 10a and the third electrode 10c, the first electrode 10a as a working electrode and the third electrode 10c as a reference electrode, and the purpose of monitoring can also be achieved by detecting the current / electron changes generated by the electrochemical reaction on the working electrode.

[0079] For example, taking the example of the microneedle electrodes 10 including the first electrode 10a, the second electrode 10b and the third electrode 10c, it should be noted that only part of the microneedle electrodes 10 are shown in FIG. 1, such as only one first electrode 10a, one second electrode 10b and one third electrode 10c. The first electrode 10a in the monitoring device 100 can also be multiple, and correspondingly, the second electrode 10b and the third electrode 10c can also be multiple respectively.

[0080] Each microneedle electrode 10 can include a plurality of microneedle structures 11, for example, the third electrode 10c in FIG. 1 can include a plurality of microneedle structures 11, for example, 6 microneedle structures 11. Each microneedle structure 11 can be a microneedle-shaped structure, the width of the microneedle structure 11 can be less than 2 mm, and the plurality of microneedle structures 11 can be arranged in sequence to form a microneedle row (see FIG. 8 for a microneedle electrode 10), so that the entire microneedle electrode 10 can be a flat sheet-like structure. It can be understood that the overall thickness of the microneedle electrode 10 is small, and the microneedle electrode 10 forming the microneedle row can also be regarded as a flat sheet-like structure.

[0081] Each microneedle structure 11 has a first electrode layer (not shown in the figure) on one side surface, the first electrode layer can be a flat layer-like structure, and the first electrode layer is electrically connected to the circuit board. According to different types of microneedle electrodes 10, the first electrode layer of the microneedle structure 11 can also have other functional film layers, for example, when the microneedle electrode 10 is a working electrode, the first electrode layer of the microneedle structure 11 can also have a sensing layer, which can react with molecules under the skin to form an electrical signal, and the electrical signal can be transmitted to the circuit board through the first electrode layer. When the microneedle electrode 10 is a reference electrode, the first electrode layer of the microneedle structure 11 can also have a silver, silver chloride layer, etc. Reference layer. The microneedle structure 11 can also have an insulating layer (not shown in the figure), a modification film layer (such as a biocompatible film) (not shown in the figure).

[0082] In order to ensure the accuracy of the detection of the microneedle electrode 10, the flat microneedle electrode 10 needs to be vertically assembled with the circuit board and the substrate 101 and electrically connected, that is, the microneedle electrode 10 is arranged in a vertically protruding manner on the substrate 101 and the circuit board, so that the microneedle electrode 10 can smoothly penetrate to the detection position under the skin. In addition, each microneedle structure 11 (first electrode layer) in the microneedle electrode 10 can correspond to a respective electrical connection path to achieve electrical connection with the circuit board. Compared with connecting the plurality of microneedle structures 11 of the entire microneedle row in series and then connecting them with the circuit board, it can effectively identify potential scene signals or abnormal state signals, realize early warning of error values, exceed normal range, etc., and can significantly improve the accuracy and reliability of detection.

[0083] At present, the forming process of the microneedle structure is adjusted and improved to realize the electrical signal extraction of a single microneedle structure and the vertical connection of the microneedle electrode and the circuit board. The process steps are numerous and complex, which is not conducive to production.

[0084] Based on this, the embodiment of the present application provides a connector and a microneedle assembly comprising the same, which is used to realize the vertical assembly and electrical connection of the microneedle electrode in the microneedle assembly and the circuit board in the monitoring device. The connector comprises a first fixing member and a second fixing member, the first mating surface of the first fixing member is parallel to the second mating surface of the second fixing member, and the second mating surface of the second fixing member is perpendicular to the third mating surface. The first fixing member and the second fixing member can be assembled on the two sides of the microneedle electrode respectively, the first mating surface is opposite and parallel to the first surface of the microneedle electrode, and the second mating surface is opposite and parallel to the second surface of the microneedle electrode, which can ensure the flatness of the microneedle electrode as a whole, and is beneficial to improving the verticality of the microneedle electrode and the circuit board. The second fixing member can also be assembled with the circuit board, the third mating surface can be opposite and parallel to one side of the circuit board, the first mating surface and the second mating surface are parallel to the first surface and the second surface of the microneedle electrode respectively, and perpendicular to the third mating surface, so that the first surface and the second surface of the microneedle electrode are perpendicular to one side of the circuit board, thereby realizing the vertical assembly of the microneedle electrode and the circuit board. The high verticality of the microneedle electrode and the circuit board is ensured, which is beneficial to improving the accuracy and reliability of detection. Moreover, the vertical electrical connection of the microneedle electrode and the circuit board can be realized through the second fixing member, so that the microneedle electrode can realize the vertical assembly and electrical connection with the circuit board through the connector, and has high verticality.

[0085] The structural design of the connector is relatively simple, and the processing and assembly process is simple and convenient for production. The connector also has a wider application range, and has less restrictions on the forming material, forming process and structural size of the microneedle structure in the microneedle electrode. Moreover, multiple microneedle electrodes can realize the vertical assembly and electrical connection with the circuit board through the connector, which can ensure the consistency of the verticality of different microneedle electrodes assembled on the circuit board and the consistency of the height of different microneedle electrodes exposed outside the connector. The first fixing member and the second fixing member of the connector can also serve as retainers to provide force-applicable clamping parts. In the assembly process of the microneedle assembly and the circuit board, the problem of damage to the modification film layer on the microneedle electrode caused by direct clamping or contact with the microneedle electrode can be avoided, and the performance of the microneedle electrode is ensured.

[0086] It should be noted that the connector can be used in the physiological index monitoring device described above to realize the vertical assembly and electrical connection of the flat (planar) microneedle electrode and the circuit board. The connector can also be used for the vertical assembly and electrical connection of other planar (or flat) microneedle structures (or planar needle arrays) and circuit boards, or can also be applied to other scenarios where the electrical connection points in the planar (or flat) form need to be vertically connected and the planar surface where the electrical connection points are located needs to be kept straight.

[0087] Fig. 2 is a front view structural schematic diagram of the connector provided by the embodiment of the present application. It should be noted that the dashed line structure shown in the figure is the structure edge that cannot be observed under the current viewing angle.

[0088] Referring to FIG. 2, the connector 20 comprises a first fixing member 21 and a second fixing member 22, the first fixing member 21 and the second fixing member 22 can be assembled with the microneedle electrode respectively, and the second fixing member 22 can also be assembled with the circuit board, so as to assemble the microneedle electrode on the circuit board and realize the connection between the microneedle electrode and the circuit board.

[0089] It should be noted that the relative positions of the first fixing member 21 and the second fixing member 22 shown in FIGS. 2 to 4 are when the first fixing member 21 and the second fixing member 22 are assembled with the microneedle electrode. When not assembled with the microneedle electrode, the circuit board and the like, the first fixing member 21 and the second fixing member 22 can be two relatively independent structural members and can not have a specific positional relationship.

[0090] When the connector 20 is assembled with the microneedle electrode 10 (referring to FIG. 5), the first fixing member 21 and the second fixing member 22 can be located on the opposite sides of the microneedle electrode 10 respectively. In the embodiment of the application, the thickness direction of the microneedle electrode 10 is taken as the y direction, and the first fixing member 21 and the second fixing member 22 can be located on the two sides of the microneedle electrode 10 along the thickness direction. As shown in FIG. 2, the first fixing member 21 and the second fixing member 22 are distributed along the z direction.

[0091] The first fixing member 21 comprises a first matching surface 211, the first matching surface 211 can be a side surface of the first fixing member 21, and the first matching surface 211 can be a flat plane. Taking the height direction of the microneedle electrode as the y direction and the width direction as the x direction, the first matching surface 211 can be parallel to the height direction and the width direction of the microneedle electrode 10 (referring to FIG. 5), and as shown in FIG. 2, the first matching surface 211 can be a plane parallel to the x-y plane.

[0092] FIG. 3 is a top view of the connector in FIG. 2, and FIG. 4 is a right side view of the connector in FIG. 2.

[0093] Referring to FIG. 3, the second fixing member 22 comprises a second matching surface 221 and a third matching surface 222. As shown in FIG. 4, the second matching surface 221 and the third matching surface 222 can also be flat planes respectively, for example, the second matching surface 221 can be a plane parallel to the x-y plane, and the third matching surface 222 can be a plane parallel to the x-z plane.

[0094] The second matching surface 221 and the first matching surface 211 are parallel to each other, and the second matching surface 221 and the third matching surface 222 are perpendicular to each other, that is, the first matching surface 211 and the second matching surface 221 are both perpendicular to the third matching surface 222.

[0095] It should be noted that, considering the machining and assembly errors, the parallel in the embodiments of the present application can include approximate parallel. For example, the first fitting surface 211 and the second fitting surface 221 are parallel, and the first fitting surface 211 and the second fitting surface 221 do not intersect, and do not have an inclined angle or the inclined angle is 0 (completely parallel). Alternatively, in some examples, the first fitting surface 211 and the second fitting surface 221 can have a small angle of inclined angle, such as an inclined angle of less than 2°.

[0096] The vertical in the embodiments of the present application can also include approximate vertical. For example, the second fitting surface 221 is perpendicular to the third fitting surface 222, the second fitting surface 221 and the third fitting surface 222 intersect, and form an angle of 90°. Alternatively, in some examples, the angle between the second fitting surface 221 and the third fitting surface 222 can be approximately 90°, such as 87°, 89°, 91°, 92°, etc.

[0097] FIG. 5 is a partial structure right side view schematic diagram of the connector and the microneedle electrode assembled to form a microneedle assembly in FIG. 2. It should be noted that only the assembly side view of the connector and one microneedle electrode (i.e. one piece of microneedle row) is shown in FIG. 5.

[0098] Referring to FIG. 5, when the connector 20 and the microneedle electrode 10 are assembled to form the microneedle assembly 102, the first fixing part 21 and the second fixing part 22 are respectively located on the opposite sides of the microneedle electrode 10. For example, the first fixing part 21 and the second fixing part 22 can be respectively located on the opposite sides of the microneedle electrode 10 in the thickness direction (z direction), so as to reduce or avoid the bending of the microneedle electrode 10, to avoid the risk of damage to the electrode layer and other film layers caused by the bending of the microneedle electrode 10, and to ensure the integrity of the electrode layer and other film layers. The height direction (y direction) of the microneedle electrode 10 can be parallel to the first fitting surface 211 and the second fitting surface 221, and perpendicular to the third fitting surface 222.

[0099] The microneedle electrode 10 can include a first surface 13 and a second surface 14 opposite in the thickness direction (z direction), and the first surface 13 and the second surface 14 can be parallel to the x-y plane. The first electrode layer 15 can be arranged on the second surface 14 of the microneedle electrode 10 in a planar layer structure.

[0100] The first fixing part 21 can be located on the first surface 13 side of the microneedle electrode 10, and the second fixing part 22 can be located on the second surface 14 side of the microneedle electrode 10. Part of the microneedle electrode 10 (the needle tip side of the microneedle structure 11) protrudes from the connector 20, so as to ensure that the microneedle electrode 10 can penetrate into the skin below.

[0101] The first matching surface 211 of the first fixing member 21 can be opposite to and parallel to the first surface 13 of the microneedle electrode 10, and the second matching surface 221 of the second fixing member 22 can be opposite to and parallel to the second surface 14 of the microneedle electrode 10, that is, the first matching surface 211 and the second matching surface 221 are opposite to and parallel to the two surfaces of the microneedle electrode 10, respectively, which can ensure the flatness of the microneedle electrode 10 and improve the perpendicularity of the microneedle electrode 10 and the circuit board.

[0102] FIG. 6 is a schematic diagram of a partial structure of the assembly of the microneedle assembly and the circuit board in the monitoring device in FIG. 5.

[0103] Referring to FIG. 6, the second fixing member 22 can be assembled with the circuit board 103, and the third matching surface 222 of the second fixing member 22 can be opposite to and parallel to one surface of the circuit board 103. The first matching surface 211 and the second matching surface 221 are parallel to the first surface 13 and the second surface 14 of the microneedle electrode 10, respectively, and perpendicular to the third matching surface 222. The third matching surface 222 is parallel to one surface of the circuit board 103, so that the first surface 13 and the second surface 14 of the microneedle electrode 10 can be perpendicular to one surface of the circuit board 103, and the vertical assembly of the microneedle electrode 10 and the circuit board 103 is achieved. The height direction (y direction) of the microneedle electrode 10 can be perpendicular to the circuit board 103, which ensures the high perpendicularity of the microneedle electrode 10 and the circuit board 103 and improves the accuracy and reliability of detection.

[0104] When the second fixing member 22 is assembled with the microneedle electrode 10, the second fixing member 22 can be electrically connected with the first electrode layer 15 on the second surface 14 of the microneedle electrode 10. When the second fixing member 22 is assembled with the circuit board 103, the second fixing member 22 can be electrically connected with the circuit board 103, so that the vertical electrical connection of the microneedle electrode 10 and the circuit board 103 is achieved through the second fixing member 22. The microneedle electrode 10 is vertically assembled with and electrically connected to the circuit board 103 through the connector 20, and has high perpendicularity.

[0105] The structure design of the connector 20 is relatively simple. In actual use, the first fixing member 21 and the second fixing member 22 of the connector 20 are assembled with the microneedle electrode 10, and then the second fixing member 22 is assembled with the circuit board 103, so that the vertical connection of the microneedle electrode 10 and the circuit board 103 is completed. The processing and assembly process is simple and convenient for production. The connector 20 also has a wider application range and has less restrictions on the forming material, forming process, and structure size of the microneedle structure 11 in the microneedle electrode 10. For example, the forming material of the microneedle structure 11 can include but is not limited to silicon-based material, polymer, and stainless steel, and the like, and has high applicability.

[0106] Moreover, the plurality of microneedle electrodes 10 can be vertically assembled and electrically connected to the circuit board 103 through the connectors 20 respectively, so as to ensure the verticality consistency of the assembly of different microneedle electrodes 10 on the circuit board 103. By controlling the relative position of the assembly between the connector 20 and the microneedle electrode 10, the height (height in the y direction) of the microneedle electrode 10 exposed to the outside of the connector 20 can be controlled, and the height consistency of the microneedle electrode 10 exposed to the outside of the connector 20 can be ensured, which further helps to improve the accuracy and reliability of detection.

[0107] The first fixing member 21 and the second fixing member 22 of the connector 20 are assembled on the two sides opposite to each other of the microneedle electrode 10, and the first fixing member 21 and the second fixing member 22 can serve as holders to provide forceable clamping positions to replace part of the microneedle structure 11 with the connector 20. During the assembly of the microneedle electrode 10 on the circuit board 103 or other steps requiring clamping and transferring the microneedle electrode 10, the microneedle electrode 10 can be transferred by clamping the first fixing member 21 and the second fixing member 22 for assembly and other operations. This avoids the problem of damaging the modification film layer, electrode layer and other layers on the microneedle electrode 10 caused by directly clamping or contacting the microneedle electrode 10, and ensures the performance of the microneedle electrode 10.

[0108] To realize the assembly of the first fixing member 21 and the second fixing member 22 with the microneedle electrode 10, for example, the first fitting surface 211 of the first fixing member 21 can have a first plug-in part 212 (refer to FIGS. 3 and 4), and the microneedle electrode 10 can have a first plug-in position 121 (refer to FIG. 8). As shown in FIG. 6, the first plug-in part 212 is inserted and fitted with the first plug-in position 121 to realize the plug-in fixing of the first fixing member 21 with the microneedle electrode 10.

[0109] Among them, the first plug-in part 212 is inserted and fitted with the first plug-in position 121, for example, the first plug-in part 212 can be inserted into the first plug-in position 121 and realize interference fit with the first plug-in position 121, so that the first fixing member 21 can be stably assembled and fixed with the microneedle electrode 10.

[0110] For example, the first plug-in part 212 can be a protruding structure, for example, the first plug-in part 212 can be a protruding structure formed on the first fitting surface 211. The shape of the protruding structure can be a regular shape such as a spherical shape, an oval spherical shape, a cube, a columnar body, or the shape of the protruding structure can also be other irregular shapes.

[0111] The first insertion site 121 can be a groove structure with a receiving cavity. For example, the first insertion site 121 can be a groove or a through groove structure formed on the first surface of the microneedle electrode 10. The shape of the first insertion site 121 can match the shape of the first insertion part 212, so that the first insertion part 212 can be inserted into the receiving cavity of the first insertion site 121 and achieve interference fit.

[0112] Alternatively, in some examples, the first insertion part 212 can be a groove or a through groove structure with a receiving cavity, and the first insertion site 121 can be a protruding structure matching the shape of the first insertion part 212, so that the first insertion site 121 can be inserted into the first insertion part 212 and achieve interference fit. Alternatively, in some examples, the first insertion part 212 and the first insertion site 121 can also be other types of structural members. In the embodiments of the present application, the insertion part is a protruding structure, and the insertion site is a groove or a structure that is generally described.

[0113] In the embodiments of the present application, the specific number and arrangement position of the first insertion part 212 are not limited. The number of the first insertion part 212 can be one or more. The number of the first insertion site 121 can correspond to the number of the first insertion part 212 one by one. The design of multiple first insertion parts 212 and first insertion sites 121 can improve the assembly firmness between the first fixing member 21 and the microneedle electrode 10.

[0114] The first insertion part 212 can be regularly or irregularly distributed on the first mating surface 211. For example, the first insertion part 212 can be sequentially and spacedly distributed along the width direction (x direction) (as shown in FIG. 3).

[0115] For example, the second mating surface 221 of the second fixing member 22 can have a second insertion part 223 (as shown in FIGS. 3 and 4), and the microneedle electrode 10 can have a second insertion site 122 (as shown in FIG. 8). As shown in FIG. 6, the second insertion part 223 and the second insertion site 122 are inserted and matched, so as to achieve the insertion and fixation of the second fixing member 22 and the microneedle electrode 10. For example, the second insertion part 223 can be inserted into the second insertion site 122 and achieve interference fit with the second insertion site 122, so that the second fixing member 22 can be stably assembled and fixed with the microneedle electrode 10.

[0116] The structure of the second insertion part 223 can be the same as that of the first insertion part 212, for example, the second insertion part 223 can be a protruding structure formed on the second matching surface 221. The structure of the second insertion site 122 can be the same as that of the first insertion site 121, for example, the second insertion site 122 can be a groove or a through groove or the like structure formed on the microneedle electrode 10. The structure, shape, etc. of the second insertion part 223 and the second insertion site 122 can refer to the first insertion part 212 and the first insertion site 121, which will not be repeated here.

[0117] Of course, in some examples, the structure, shape, etc. of the second insertion part 223 and the second insertion site 122 can also be different from those of the first insertion part 212 and the first insertion site 121.

[0118] In the embodiments of the present application, the specific number and arrangement position of the second insertion part 223 are not limited, and the number of the second insertion part 223 can be one or more. The number of the second insertion site 122 can correspond to the number of the second insertion part 223 one by one. The design of multiple second insertion parts 223 and second insertion sites 122 can improve the assembly firmness between the second fixing part 22 and the microneedle electrode 10.

[0119] The second insertion part 223 can also be regularly or irregularly distributed on the first matching surface 211, for example, the second insertion part 223 can be sequentially and spacedly arranged along the width direction (x direction) (as shown in FIG. 3). The plurality of first insertion parts 212 can form a row, and the plurality of second insertion parts 223 can form a row.

[0120] Correspondingly, the plurality of first insertion sites 121 on the microneedle electrode 10 can form a row (as shown in FIG. 8), and the plurality of second insertion sites 122 can form a row. The row of first insertion sites 121 and the row of second insertion sites 122 can be arranged up and down along the height direction (y direction) of the microneedle electrode 10, for example, the plurality of first insertion sites 121 can be arranged far away from the needle tip end of the microneedle structure 11 of the microneedle electrode 10, and the plurality of second insertion sites 122 can be arranged close to the needle tip end.

[0121] Of course, in some other examples, the plurality of second insertion sites 122 can be arranged far away from the needle tip end, and the plurality of first insertion sites 121 can be arranged close to the needle tip end.

[0122] Continuing to refer to FIG. 6, the first fixing member 21 and the second fixing member 22 are assembled with the microneedle electrode 10 through the first inserting part 212 and the second inserting part 223, respectively. The first inserting part 212 and the second inserting part 223 can play a role of alignment and limiting for the microneedle electrode 10. Adjusting the height position of the first inserting part 212 and the second inserting part 223 on the first fixing member 21 and the second fixing member 22 (such as the height position relative to the circuit board 103 in the y direction) can realize the adjustment of the relative position of the assembly between the microneedle electrode 10 and the first fixing member 21 and the second fixing member 22, so as to control the height of the microneedle electrode 10 exposed outside the connector 20. Under the condition of ensuring the high verticality connection between the microneedle electrode 10 and the circuit board 103, the verticality consistency and the height consistency of different microneedle electrodes 10 are ensured.

[0123] To realize the assembly of the second fixing member 22 and the circuit board 103, the third matching surface 222 of the second fixing member 22 can have a third inserting position 224 (refer to FIG. 3 and FIG. 4) for example. Continuing to refer to FIG. 6, one side of the circuit board 103 can have a third inserting part 113. The third inserting position 224 can be inserted and matched with the third inserting part 113 to realize the plug-in fixing of the second fixing member 22 and the circuit board 103. For example, the third inserting part 113 can be inserted into the third inserting position 224 and realize the interference fit with the third inserting position 224, so that the second fixing member 22 can be stably assembled and fixed with the circuit board 103, and then the microneedle electrode 10 is stably assembled on the circuit board 103, and the high verticality is ensured.

[0124] The structure of the third inserting position 224 can be the same as that of the first inserting position 121. For example, the third inserting position 224 can be a groove or a through groove formed on the third matching surface 222. The structure of the third inserting part 113 can be the same as that of the first inserting part 212. For example, the third inserting part 113 can be a protruding structure formed on one side of the circuit board 103. The structure and shape of the third inserting position 224 and the third inserting part 113 can be referred to the first inserting part 212 and the first inserting position 121, which will not be described here.

[0125] Of course, in some examples, the structure and shape of the third inserting part 113 and the third inserting position 224 can be different from those of the first inserting part 212 and the first inserting position 121.

[0126] To realize the vertical electrical connection between the microneedle electrode 10 and the circuit board 103, the second fixed part 22 is provided with a first electrical connection part 225 on the second matching surface 221 (see FIGS. 3 and 4), and the microneedle electrode 10 is provided with a first electrode layer 15 on the second surface 14 (see FIG. 6). When the second fixed part 22 is assembled with the microneedle electrode 10, the second matching surface 221 is opposite to the second surface 14 of the microneedle electrode 10, and the first electrical connection part 225 on the second matching surface 221 can be in contact with the first electrode layer 15 on the second surface 14 to realize the electrical conduction connection, thereby realizing the electrical connection between the first electrode layer 15 of the microneedle electrode 10 and the first electrical connection part 225 of the second fixed part 22.

[0127] The second fixed part 22 is provided with a second electrical connection part 226 on the third matching surface 222 (see FIG. 4), and the second electrical connection part 226 is electrically connected with the first electrical connection part 225. For example, the first electrical connection part 225 and the second electrical connection part 226 can be electrically connected through a through structure 23a provided on the second fixed part 22.

[0128] The through structure 23a can be partially fixed on the second matching surface 221 and partially fixed on the third matching surface 222, so that the through structure 23a can be in a right angle (approximately 90°) structure or a structure with a certain pre-bending angle. Alternatively, the through structure 23a can be located inside the second fixed part 22 and not exposed on the second matching surface 221 and the third matching surface 222. The specific structure and shape of the through structure 23a are not limited, for example, the through structure 23a can be an electrical connection line, a conductive via hole, etc.

[0129] The circuit board 103 is provided with a first conductive structure 133 on one side (see FIG. 6), and when the second fixed part 22 is assembled with the circuit board 103, the third matching surface 222 of the second fixed part 22 is opposite to one side of the circuit board 103, and the second electrical connection part 226 on the third matching surface 222 can be in contact with the first conductive structure 133 on one side of the circuit board 103 to realize the electrical conduction connection, thereby realizing the electrical connection between the second electrical connection part 226 of the second fixed part 22 and the first conductive structure 133 of the circuit board 103. Thus, the first electrode layer 15 on the microneedle electrode 10 and the first conductive structure 133 on the circuit board 103 are electrically connected through the first electrical connection part 225 and the second electrical connection part 226, thereby realizing the vertical electrical connection between the microneedle electrode 10 and the circuit board 103.

[0130] The above-mentioned electrical connection implementation can realize the electrical connection conduction of each microneedle structure 11 with the circuit board 103, and realize the electrical signal extraction of a single microneedle structure 11. For example, the first electrical connection part 225 and the second electrical connection part 226 on the second fixing part 22 can be multiple, the multiple first electrical connection parts 225 can be distributed on the second matching surface 221 (as shown in FIG. 3), and the multiple second electrical connection parts 226 can be distributed on the third matching surface 222 (as shown in FIG. 2). The multiple first electrical connection parts 225 are respectively electrically connected with the multiple second electrical connection parts 226, that is, the first electrical connection part 225 and the second electrical connection part 226 are one-to-one electrically connected.

[0131] The distribution mode of the multiple first electrical connection parts 225 is not limited, and the multiple first electrical connection parts 225 can be distributed on the second matching surface 221 in a regular or irregular manner. For example, the multiple first electrical connection parts 225 can be arranged in a row along the width direction (x direction) in sequence and at intervals.

[0132] The distribution mode of the multiple second electrical connection parts 226 is not limited, and the multiple second electrical connection parts 226 can be distributed on the third matching surface 222 in a regular or irregular manner. For example, the multiple second electrical connection parts 226 can be arranged in a row along the width direction (x direction) in sequence and at intervals.

[0133] The microneedle electrode 10 has the first electrode layer 15 on each microneedle structure 11, and the first electrode layers 15 on the multiple microneedle structures 11 are spaced apart, so that the second surface 14 of the microneedle electrode 10 has multiple spaced-apart first electrode layers 15. When the second fixing part 22 is assembled with the microneedle electrode 10, the multiple first electrical connection parts 225 can be in contact with and electrically connected with the first electrode layers 15 of the multiple microneedle structures 11 (as shown in FIG. 9), that is, the first electrical connection part 225 is one-to-one electrically connected with the microneedle structure 11 and the first electrode layer 15 on the microneedle structure 11. The number and arrangement position of the first electrical connection part 225 can correspond to the number of the microneedle structure 11 and the position of the first electrode layer 15.

[0134] The first conductive structure 133 on one surface of the circuit board 103 can also be multiple (as shown in FIG. 12), and the multiple first conductive structures 133 can be distributed at intervals. When the second fixing part 22 is assembled with the circuit board 103, the multiple second electrical connection parts 226 are respectively in contact with and electrically connected with the multiple first conductive structures 133, that is, the second electrical connection part 226 is one-to-one electrically connected with the first conductive structure 133 on the circuit board 103.

[0135] Through the plurality of first electrical connection portions 225 and the plurality of second electrical connection portions 226, the plurality of microneedle structures 11 and the first electrode layer 15 on the microneedle structure 11 are respectively connected to the plurality of first conductive structures 133 on the circuit board 103, that is, the first electrode layer 15 of the microneedle structure 11 is electrically connected to the first conductive structure 133 one by one, realizing independent corresponding electrical connection of each microneedle structure 11 and the circuit board 103, so that the electrical signal on each microneedle structure 11 can be individually led out to the circuit board 103, which is beneficial to the effective identification of potential influence scene signals, abnormal state signals and the like, realizes the early warning of error values, values beyond the normal range and the like, and further improves the accuracy and reliability of detection.

[0136] Fig. 7 is a front view structural schematic diagram of the first fixing member in Fig. 4, and Fig. 8 is a front view structural schematic diagram of the assembly of the first fixing member and the microneedle electrode in Fig. 7.

[0137] In actual assembly of the connector and the microneedle electrode, and through the connector to connect the microneedle electrode and the circuit board, referring to Fig. 7, taking the first plug-in portion 212 as a protruding structure as an example, the first fixing member 21 has a plurality of first plug-in portions 212.

[0138] Referring to Fig. 8, the microneedle electrode 10 can include a base 12 and a plurality of microneedle structures 11, and the plurality of microneedle structures 11 can be sequentially and spacedly distributed along the width direction (x direction) to form a row. The plurality of microneedle structures 11 can be distributed on one side of the base 12 along the height direction. One microneedle electrode 10 can be a sheet-shaped needle array structure formed by the microneedle structures 11 and the base 12 in parallel in a row.

[0139] The second surface 14 of the microneedle electrode 10 is provided with a plurality of spaced first electrode layers 15, and the plurality of first electrode layers 15 correspond one by one to the plurality of microneedle structures 11. Each microneedle structure 11 has one first electrode layer 15, and the first electrode layer 15 on each microneedle structure 11 extends to the base 12, such as the first electrode layer 15 extending to the base 12 along the height direction. Taking the microneedle electrode 10 shown in Fig. 8 as a first electrode 10a, that is, a working electrode as an example, the first electrode layer 15 can have a sensing layer 17, and the sensing layer 17 can be arranged adjacent to the needle tip end of the microneedle structure 11.

[0140] For example, a containing groove can be formed on the second surface 14 of the microneedle electrode 10, which can be partially distributed on the microneedle structure 11 and partially distributed on the base 12, and a conductive material can be filled in the containing groove to form the first electrode layer 15.

[0141] The first insertion position 121 and the second insertion position 122 can be provided on the base 12. For example, the first insertion position 121 can be provided far from the needle tip of the microneedle structure 11, and the second insertion position 122 can be provided close to the needle tip. The first insertion position 121 and the second insertion position 122 can be through slots. For example, in the thickness direction (z direction) of the microneedle electrode 10, the first insertion position 121 and the second insertion position 122 can penetrate the base 12.

[0142] The first fixing member and the second fixing member of the connector can be assembled with the base 12 of the microneedle electrode 10, reducing or avoiding the influence of the arrangement of the connector on the microneedle structure 11 of the microneedle electrode 10, and reducing the design difficulty of achieving vertical assembly and electrical connection. Moreover, the first fixing member and the second fixing member of the connector can be used to achieve alignment assembly in the horizontal plane (such as the placement plane) by using a larger size base 12, thereby improving the assembly stability of the microneedle electrode 10 and the connector, and facilitating the guarantee of the flatness of the microneedle electrode 10, and further guaranteeing the high verticality of the microneedle electrode 10 and the circuit board.

[0143] For example, the first fixing member 21 can be placed horizontally, such as being placed on a placement plane 200 (as shown in FIG. 7), and the first matching surface 211 of the first fixing member 21 faces away from the placement plane. As shown in FIG. 8, the first surface of the microneedle electrode 10 is opposite to the first matching surface 211 of the first fixing member 21, the first insertion position 121 on the base 12 of the microneedle electrode 10 is aligned with the first insertion part 212 protruding on the first matching surface 211, the microneedle electrode 10 is placed on the first fixing member 21, the first insertion position 121 is inserted and connected with the first insertion part 212, the first matching surface 211 is opposite to the first surface, and the second surface 14 is opposite to the first matching surface 211.

[0144] FIG. 9 is a front view structural schematic diagram of the assembly of the first fixing member, the microneedle electrode, and the second fixing member in FIG. 7.

[0145] As shown in FIG. 9, the second fixing member 22 is placed on the side of the microneedle electrode 10 away from the first fixing member 21, the second matching surface of the second fixing member 22 is opposite to the second surface 14 of the microneedle electrode 10, the third matching surface 222 of the second fixing member 22 is perpendicular to the second surface 14 of the microneedle electrode 10. The second insertion part 223 on the second matching surface 221 is aligned with the second insertion position 122 on the base 12, the plurality of first electrical connection parts 225 on the second matching surface can correspond to and be aligned with the plurality of first electrode layers 15 on the base 12 of the microneedle electrode 10 one by one, and the plurality of first electrical connection parts 225 on the second matching surface 221 correspond to the plurality of first electrode layers 15 on the plurality of microneedle structures 11 one by one. The second fixing member 22 is placed on the microneedle electrode 10, the first insertion part 212 is inserted and connected with the first insertion position 121, and the first electrical connection part 225 is in contact with the first electrode layer 15.

[0146] The second fixing member 22, the microneedle electrode 10 and the first fixing member 21 are compressed, for example, by applying pressure to the side of the second fixing member 22 away from the microneedle electrode 10, or by simultaneously applying pressure to the side of the second fixing member 22 away from the microneedle electrode 10 and the side of the first fixing member 21 away from the microneedle electrode 10, to compress the second fixing member 22, the microneedle electrode 10 and the first fixing member 21. The first insertion portion 212 and the first insertion site 121 are stably inserted together (e.g., an interference fit is achieved), the second insertion portion 223 and the second insertion site 122 are stably inserted together (e.g., an interference fit is achieved), and the plurality of first electrical connection portions 225 are ensured to be in electrical contact with the plurality of first electrode layers 15.

[0147] To ensure the stability of the connection between the first electrical connection portions 225 and the first electrode layers 15, a conductive adhesive layer (not shown in the figure) such as a silver adhesive layer can be provided on the first electrical connection portions 225. When the second fixing member 22, the microneedle electrode 10 and the first fixing member 21 are compressed, the first electrical connection portions 225 can be stably bonded to the first electrode layers 15 through the conductive adhesive layer and achieve electrical connection.

[0148] Figure 10 is a front view structural schematic diagram of the microneedle assembly formed after the assembly of the first fixing member, the microneedle electrode and the second fixing member in Figure 9.

[0149] Referring to Figure 10, the first fixing member (not shown in the figure), the microneedle electrode 10 and the second fixing member 22 are assembled together to form a microneedle assembly 102 after compression, achieving the alignment and assembly of the first fixing member, the microneedle electrode 10 and the second fixing member 22 on the placement plane, and the assembly of the first fixing member and the second fixing member 22 with the larger base on the microneedle electrode 10.

[0150] Figure 11 is a perspective structural schematic diagram of the microneedle assembly in Figure 10.

[0151] In combination with Figure 11, at least part of the microneedle structure 11 protrudes from the connector 20 in the height direction (y direction), for example, the tip of the microneedle structure 11 protrudes from the connector 20. At least part of the first electrode layer 15 and the sensing layer 17 on the microneedle structure 11 also protrude from the connector 20.

[0152] The microneedle assembly 102 formed after the stable assembly of the connector 20 and the microneedle electrode 10 is still on the placement plane 200, for example, the first mating surface of the first fixing member 21, the second mating surface of the second fixing member 22 and the height direction of the microneedle electrode 10 are parallel to the placement plane, and the third mating surface 222 of the second fixing member 22 is perpendicular to the placement plane.

[0153] The first fixing member 21 and the second fixing member 22 respectively assembled on the opposite sides of the base of the microneedle electrode 10 can be used as the holder of the microneedle electrode 10. As shown in FIGS. 10 and 11, the connector 20 can be clamped (e.g., the clamping position can be the position shown by the dashed arrow in the figure) by the first fixing member 21 on the side away from the microneedle electrode 10 and by the second fixing member 22 on the side away from the microneedle electrode 10, respectively. The entire microneedle assembly 102 is turned 90°, and the height direction of the microneedle electrode 10 is turned from parallel to the placement plane 200 to perpendicular to the placement plane 200, i.e., the first mating surface of the first fixing member 21, the second mating surface of the second fixing member 22, and the height direction of the microneedle electrode 10 are perpendicular to the placement plane 200 (see FIG. 12), and the third mating surface 222 of the second fixing member 22 is parallel to the placement plane 200.

[0154] FIG. 12 is a front view structural schematic diagram of the assembly of the microneedle assembly and the circuit board in FIG. 11, and FIG. 13 is a front view structural schematic diagram of the assembly of the microneedle assembly and the circuit board in FIG. 11.

[0155] Referring to FIG. 12, the circuit board 103 can also be placed on the placement plane 200, and one side of the circuit board 103 having the third insertion part 113 and the first conductive structure 133 faces away from the placement plane. The connector is clamped to hold the entire microneedle assembly, the third mating surface 222 of the second fixing member 22 faces one side of the circuit board 103, the third insertion site 224 on the third mating surface 222 is aligned with the third insertion part 113 on one side of the circuit board 103, and the plurality of second electrical connection parts 226 on the third mating surface 222 correspond to and are aligned with the plurality of first conductive structures 133 on the circuit board 103.

[0156] The entire microneedle assembly is placed on the circuit board 103, the third insertion part 113 and the third insertion site 224 are aligned and inserted together, and the second electrical connection parts 226 correspondingly contact the first conductive structures 133. Referring to FIG. 13, the microneedle assembly and the circuit board 103 are pressed tightly, the third insertion part 113 and the third insertion site 224 are stably inserted together (e.g., an interference fit is achieved), and the plurality of second electrical connection parts 226 are ensured to correspondingly contact and abut the plurality of first conductive structures 133, thereby achieving stable assembly of the microneedle assembly and the circuit board 103. In this way, the vertical assembly and electrical connection of the microneedle electrode 10 and the circuit board 103 are achieved through the connector, and the electrical signals of the plurality of microneedle structures 11 are separately led out to the circuit board 103.

[0157] To ensure the stability of the connection between the second electrical connection parts 226 and the first conductive structures 133, a conductive adhesive layer (not shown in the figure) such as a silver adhesive layer can be provided on the second electrical connection parts 226. When the microneedle assembly and the circuit board 103 are pressed tightly, the second electrical connection parts 226 can be stably bonded to and electrically connected to the first conductive structures 133 through the conductive adhesive layer.

[0158] The first fixing member 21, the base 12 and the second fixing member 22 can be provided with coordination structures on the side facing away from the circuit board 103 (the side adjacent to the tip of the microneedle electrode 10), such as the coordination structure 219 on the first fixing member 21 (see FIG. 7), the coordination structure 123 on the base 12 (see FIG. 8), and the coordination structure 227 on the second fixing member 22 (see FIG. 9). The coordination structures can correspond in the thickness direction, such as being projected to coincide in the thickness direction.

[0159] The coordination structures described above can be used for coordination and fixation with the packaging shell of the monitoring device. For example, the packaging shell of the monitoring device can be provided with a matching site capable of being plugged with the coordination structure, such as the packaging shell being plugged with the coordination structures on the base 12, the first fixing member 21 and the second fixing member 22 through the microneedle structure 11, so as to realize stable assembly of the packaging shell and the microneedle assembly. The packaging shell can play a role of limiting and fixing the microneedle assembly.

[0160] For example, the coordination structure can include a plurality of spaced grooves, so that the side of the first fixing member 21, the base 12 and the second fixing member 22 facing away from the circuit board can be jagged. The matching on the packaging shell can include a plurality of spaced protrusions, so that the side of the packaging shell can be jagged to be engaged and plugged with the coordination structure.

[0161] For example, the first fixing member 21 can further include a first body part 21a (see FIG. 4), which can be an electrically insulating structural member, such as the forming material of the first body part 21a including an insulating material, such as a high molecular insulating material. Part of the outer surface of the first body part 21a can form a first matching surface 211, and a first plug-in part 212 can be provided on the first body part 21a.

[0162] The first plug-in part 212 can be integrally formed with the first body part 21a, that is, the first plug-in part 212 is formed on part of the outer surface of the first body part 21a when the first body part 21a is formed. Alternatively, the first plug-in part 212 and the first body part 21a can be separately formed, and then the first plug-in part 212 is fixed on the first body part 21a by adhesion or the like, or the first plug-in part 212 (such as a groove, a through groove, etc.) is formed on the first body part 21a by stamping, cutting or the like.

[0163] The second fixing member 22 can further include a second body part 22a, which can be an electrically insulating structural member. The second body part 22a can be formed of an insulating material, such as a polymer insulating material. A part of an outer surface of the second body part 22a forms a second mating surface 221 and a third mating surface 222, respectively. A second insertion part 223, a third insertion part 224, a first electric connection part 225, and a second electric connection part 226 can be provided on the second body part.

[0164] The second insertion part 223 and the third insertion part 224 can be integrally formed with the second body part 22a, or the second insertion part 223 and the third insertion part 224 can be separately formed with the second body part 22a, and then assembled on the second body part 22a or formed on the second body part 22a.

[0165] The first electric connection part 225 and the second electric connection part 226 can be a contact structure provided on an outer surface of the second body part 22a. The first conductive structure can be a contact structure provided on one side of the circuit board.

[0166] In the embodiments of the present application, the first body part 21a and the second body part 22a can have various shapes and structures. The first body part 21a can have the first mating surface 211, and the second body part 22a can have the second mating surface 221 and the third mating surface 222 perpendicular to each other.

[0167] In some examples, the second body part 22a can include a first fixing part 22b and a second fixing part 22c (as shown in FIG. 4). The first fixing part 22b and the second fixing part 22c are perpendicular to each other, so that the second body part 22a can have an L-shaped structure. For example, the first fixing part 22b and the second fixing part 22c can be rectangular insulating plates. The two rectangular insulating plates are orthogonal to form the second body part 22a.

[0168] The first fixing part 22b and the second fixing part 22c form a right-angle space. An outer surface of the first fixing part 22b (a side facing away from the right-angle space) forms the second mating surface 221, and an outer surface of the second fixing part 22c forms the third mating surface 222. The second mating surface 221 and the third mating surface 222 are perpendicular to each other, ensuring a high perpendicularity between the microneedle electrode and the circuit board, and the structure is simple and easy to implement.

[0169] It can be understood that, when the first fixing member 21 and the second fixing member 22 are assembled with the microneedle electrode 10 (as shown in FIG. 5), the second body part 22a of the second fixing member 22 can be located on a side of the first body part 21a facing away from the first fixing member 21, so as to avoid affecting the subsequent perpendicular assembly of the microneedle assembly 102 and the circuit board.

[0170] The plurality of microneedle assemblies are assembled on the circuit board through the connectors. The second fixing part can also be used to control the spacing between the microneedle assemblies.

[0171] FIG. 14 is a right side view of the connectors assembled with the plurality of microneedle electrodes in FIG. 2.

[0172] For example, referring to FIG. 14, the microneedle electrodes 10 include the first electrode 10a, the second electrode 10b, and the third electrode 10c. Each microneedle electrode 10 is a sheet-shaped array needle structure formed by a plurality of microneedle structures 11 and a base 12 (see the above).

[0173] The first electrode 10a, the second electrode 10b, and the third electrode 10c are assembled with the connectors, respectively. For example, the first electrode 10a is assembled with the connector 20a to form a microneedle assembly 102a. The first electrode layer 15 of the microneedle structure 11 in the first electrode 10a can have a sensing layer 17. Part of the microneedle structure 11, the sensing layer 17, and part of the first electrode layer 15 protrude from the connector 20a.

[0174] The second electrode 10b is assembled with the connector 20b to form a microneedle assembly 102b. Part of the microneedle structure 11 and part of the first electrode layer 15 protrude from the connector 20b.

[0175] The third electrode 10c is assembled with the connector 20c to form a microneedle assembly 102c. The first electrode layer 15 of the microneedle structure 11 in the third electrode 10c can have a reference layer 18, such as a silver or silver chloride layer. Part of the microneedle structure 11, the reference layer 18, and part of the first electrode layer 15 protrude from the connector 20c.

[0176] When the microneedle assemblies 102a, 102b, and 102c are assembled on the circuit board, the three microneedle assemblies can be distributed in sequence, such as along the thickness direction.

[0177] The second fixing part of the connector in one of the two adjacent microneedle assemblies can abut against the other microneedle assembly to control the spacing between the two microneedle assemblies. For example, the second fixing part 22c of the connector 20b in the microneedle assembly 102b can abut against the first fixing part 21 of the connector 20a in the microneedle assembly 102a to control the spacing between the microneedle assembly 102a and the microneedle assembly 102b. By adjusting the extension length of the second fixing part 22c in the thickness direction (z direction), the spacing between the two microneedle assemblies can be adjusted, the spacing between the different microneedle electrodes 10 can be adjusted, the spacing between the microneedle electrodes 10 can be controlled, and the detection accuracy can be improved.

[0178] FIG. 15 is a front structural schematic view of another connector provided by an embodiment of the present application, FIG. 16 is a right side view schematic view of the connector in FIG. 15, and FIG. 17 is a top side view schematic view of the connector in FIG. 16.

[0179] Alternatively, in some examples, as shown in FIGS. 15 and 16, the second body part 22a can be a block structure, for example, the second body part 22a can be a block structure in the shape of a cube, as shown in FIG. 16, part of the outer surface of the block structure forms the second mating surface 221 and the third mating surface 222, respectively, such as in a block structure in the shape of a cube, two adjacent outer surfaces are perpendicular to each other, and can form the second mating surface 221 and the third mating surface 222, respectively. Further simplifying the structural design of the second fixing member 22, under the condition that the connector 20 can realize high perpendicularity connection of the microneedle electrode and the circuit board, the structure of the connector 20 is simplified, and the difficulty of structural design and production cost are reduced.

[0180] As shown in FIGS. 16 and 17, the second mating surface 221 can have a second insertion part 223, such as a protruding structure on the second mating surface 221, so that the second insertion part 223 can be inserted and assembled with the second insertion site on the microneedle electrode. The third mating surface 222 can have a third insertion site 224, such as a groove formed on the third mating surface 222, and the third insertion site 224 can be inserted and assembled with the third insertion part on the circuit board.

[0181] As shown in FIG. 16, the third mating surface 222 can be perpendicular to the height direction (y direction), and the third mating surface 222 can be parallel to the thickness direction of the microneedle electrode 10. The extension length of the third mating surface 222 along the thickness direction (z direction) can be consistent with the thickness of the second body part 22a of the block structure, and when multiple microneedle assemblies are assembled on the circuit board through the connector, the thickness of the second fixing part 22c can realize the regulation of the spacing between the microneedle assemblies.

[0182] For example, a first electrical connection part and a second electrical connection part can be respectively provided on the second mating surface 221 and the third mating surface 222 to respectively realize electrical connection with the first electrode layer of the microneedle electrode and the first conductive structure of the circuit board. Alternatively, in some examples, as shown in FIG. 16, a third electrical connection part 228 can be provided on the second mating surface 221, and the third electrical connection part 228 can extend to the third mating surface 222 side of the second fixing member 22.

[0183] When the second fixing member 22 is assembled with the microneedle electrode, the second matching surface 221 is opposite to the second surface, and the third electrical connection part 228 on the second matching surface 221 can be electrically connected with the first electrode layer on the second surface. When the second fixing member 22 is assembled with the circuit board, the third matching surface 222 is opposite to one side of the circuit board, and one end of the third electrical connection part 228 extending to the third matching surface 222 side can be electrically connected with the first conductive structure 133 on the circuit board. The third electrical connection part 228 can also achieve the electrical connection between the first electrode layer on the microneedle electrode and the circuit board, simplify the structure design of the electrical connection part on the second fixing member 22, and facilitate the reduction of assembly process steps and the improvement of production and assembly efficiency.

[0184] As shown in FIG. 17, the third electrical connection part 228 on the second matching surface 221 can also be multiple, and the multiple third electrical connection parts 228 are arranged at intervals, and each third electrical connection part 228 extends to the third matching surface 222 side.

[0185] When the second fixing member 22 is assembled with the microneedle electrode, the multiple third electrical connection parts 228 can be respectively electrically connected with the first electrode layer on the multiple microneedle structures, and when the second fixing member 22 is assembled with the circuit board, the multiple third electrical connection parts 228 can be respectively electrically connected with the multiple first conductive structures on the circuit board, so as to achieve the independent corresponding electrical connection between each microneedle structure and the circuit board, and the electrical signal on each microneedle structure can be individually led out to the circuit board.

[0186] It should be noted that in the above example in which the second main body part 22a is in the L-shaped structure, the third electrical connection part 228 can also be arranged on the second matching surface 221, and the third electrical connection part 228 extends to the third matching surface 222 side, and the third electrical connection part 228 respectively achieves the electrical connection with the first electrode layer on the microneedle electrode and the first conductive structure on the circuit board.

[0187] As shown in FIGS. 16 and 17, the first main body part 21a of the first fixing member 21 can be a plate-shaped structure with a relatively small thickness, for example, a square thin plate structure, and part of the outer surface of the first main body part 21a can form the first matching surface 211. For example, one of the outer surfaces of the plate-shaped structure can be used as the first matching surface 211, and the first matching surface 211 has a protruding structure forming the first plug-in part 212.

[0188] The first fixing member 21 is a thin plate-shaped structure with a small size in the thickness direction, and when the microneedle electrode is assembled with the circuit board through the connector, the first fixing member 21 and the circuit board can not be directly plug-in assembled.

[0189] FIG. 18 is a right side view schematic diagram of another connector provided by the embodiment of the application and assembled with multiple microneedle electrodes.

[0190] Alternatively, in some examples, the first fixing member 21 can be assembled with the circuit board, for example, as shown in FIG. 18, the first fixing member 21 can include a fourth matching surface 213, which can be perpendicular to the first matching surface 211, and the fourth matching surface 213 is parallel to the third matching surface 222 of the second fixing member 22.

[0191] When the first fixing member 21 is assembled with the circuit board (not shown in the figure), the fourth matching surface 213 can be opposite and parallel to one side of the circuit board, that is, the first matching surface 211 of the first fixing member 21 is opposite and parallel to the first surface 13 of the microneedle electrode 10, and the fourth matching surface 213 is opposite and parallel to one side of the circuit board, and the first matching surface 211 is perpendicular to the fourth matching surface 213, which is beneficial to enhance the verticality of the vertical assembly between the microneedle electrode 10 and the circuit board.

[0192] For example, the fourth matching surface 213 can have a fourth insertion position 216, and the structure, shape, etc. of the fourth insertion position 216 can refer to the third insertion position, which will not be repeated here. For example, the fourth insertion position 216 can be a through slot structure on the fourth matching surface 213.

[0193] The circuit board (not shown in the figure) can have a fourth insertion portion, and the structure, shape, etc. of the fourth insertion portion can refer to the third insertion portion, which will not be repeated here. For example, the fourth insertion portion is a protruding structure on one side of the circuit board. When the microneedle electrode 10 is assembled on the circuit board through the connector 20, the fourth insertion position 216 of the first fixing member 21 can be inserted and assembled with the fourth insertion portion on the circuit board, realizing stable assembly of the first fixing member 21 and the circuit board, and further improving the firmness of the assembly of the connector 20, the microneedle electrode 10 and the circuit board 103.

[0194] For example, the first main body 21a can include a third fixing portion 21b and a fourth fixing portion 21c, and the third fixing portion 21b and the fourth fixing portion 21c are perpendicular to each other, so that the first main body 21a can have a L-shaped structure. For example, as shown in FIG. 18, the third fixing portion 21b and the fourth fixing portion 21c form a right angle space, the outer surface of the third fixing portion 21b (the side away from the right angle space) can form the first matching surface 211, and the outer surface of the fourth fixing portion 21c can form the fourth matching surface 213, which ensures the perpendicularity of the first matching surface 211 and the fourth matching surface 213, and the structure design is simple and convenient to realize.

[0195] The plurality of microneedle assemblies are assembled on the circuit board through the connectors, and the fourth fixing part of the first fixing part can also be used to control the spacing between the microneedle assemblies. For example, the second main part 22a of the second fixing part 22 includes the first fixing part 22b and the second fixing part 22c. Either one or both of the fourth fixing part 21c of the first fixing part 21 and the second fixing part 22c of the second fixing part 22 can be used to control the spacing between the microneedle assemblies.

[0196] Referring to FIG. 18, for example, the microneedle electrode 10 includes the first electrode 10a, the second electrode 10b, and the third electrode 10c. The first electrode 10a and the connector 20a form the microneedle assembly 102a, the second electrode 10b and the connector 20b form the microneedle assembly 102b, and the third electrode 10c and the connector 20c form the microneedle assembly 102c. When the microneedle assembly 102a, the microneedle assembly 102b, and the microneedle assembly 102c are assembled on the circuit board, the three microneedle assemblies are sequentially distributed, such as the microneedle assembly 102a, the microneedle assembly 102b, and the microneedle assembly 102c sequentially distributed along the thickness direction (z direction).

[0197] In the two adjacent microneedle assemblies, the second fixing part of the connector in one microneedle assembly can abut against the fourth fixing part of the connector in the other microneedle assembly to control the spacing between the two microneedle assemblies. For example, the second fixing part 22c of the connector 20b in the microneedle assembly 102b can abut against the fourth fixing part 21c of the first fixing part 21 of the connector 20a in the microneedle assembly 102a to control the spacing between the microneedle assembly 102a and the microneedle assembly 102b. By adjusting the extension length of the second fixing part 22c and / or the fourth fixing part 21c in the thickness direction (z direction), the spacing between the microneedle assemblies can be adjusted, and the spacing between the microneedle electrodes 10 can be controlled.

[0198] Alternatively, in some examples, the first main part 21a can be a block structure, for example, the first main part 21a can be a block structure in the shape of a cube. Part of the outer surface of the block structure forms the first fitting surface 211 and the fourth fitting surface 213, respectively. In the block structure in the shape of a cube, the two adjacent outer surfaces form the first fitting surface 211 and the fourth fitting surface 213, respectively, further simplifying the structure design of the first fixing part 21. The first fitting surface 211 can have a protruding structure to form the first plug-in part 212, and a groove can be formed on the fourth fitting surface 213 to form the fourth plug-in part 216.

[0199] In some examples, the first fixing member 21 can not be electrically connected with the circuit board, i.e., the first main body part 21a of the first fixing member 21 is an electrically insulating structural member, and the first fixing member 21 is provided with the first plug-in part 212 on the first main body part 21a to realize plug-in assembly with the microneedle electrode 10, and the first main body part 21a is not provided with a conductive area.

[0200] FIG. 19 is a right side view of another connector and microneedle electrode assembly according to an embodiment of the present application.

[0201] Alternatively, in some examples, the first fixing member 21 can be electrically connected with the circuit board to realize vertical assembly and electrical connection between the microneedle electrode 10 with the electrode layer on both sides and the circuit board.

[0202] For example, as shown in FIG. 19, the first surface 13 of the microneedle electrode 10 is provided with a second electrode layer 16, and the second surface 14 is provided with a first electrode layer 15, and the distribution of the second electrode layer 16 on the first surface 13 can refer to the distribution of the first electrode layer 15 on the second surface 14. For example, the first surface 13 is provided with a plurality of spaced second electrode layers 16, and the plurality of second electrode layers 16 correspond to the plurality of microneedle structures 11 one by one, each microneedle structure 11 is provided with a second electrode layer 16, and the second electrode layer 16 extends to the base 12.

[0203] For example, as shown in FIG. 19, the first surface 13 of the microneedle electrode 10 is provided with a second electrode layer 16, and the second surface 14 is provided with a first electrode layer 15, and the distribution of the second electrode layer 16 on the first surface 13 can refer to the distribution of the first electrode layer 15 on the second surface 14. For example, the first surface 13 is provided with a plurality of spaced second electrode layers 16, and the plurality of second electrode layers 16 correspond to the plurality of microneedle structures 11 one by one, each microneedle structure 11 is provided with a second electrode layer 16, and the second electrode layer 16 extends to the base 12.

[0204] The fourth matching surface 213 of the first fixing member 21 can be provided with a fifth electrical connection part 215, and the fifth electrical connection part 215 is electrically connected with the fourth electrical connection part 214, for example, the fifth electrical connection part 215 and the fourth electrical connection part 214 can be electrically connected through the through structure 23b provided on the first fixing member 21.

[0205] For example, the through structure 23b can be partially located on the first matching surface 211 and partially located on the fourth matching surface 213, or the through structure 23b can be located inside the first fixing member 21 and not exposed on the first matching surface 211 and the fourth matching surface 213. The specific structure and shape of the through structure 23b are not limited, for example, the through structure 23b can be an electrical connection line, a conductive via hole, etc.

[0206] The second conductive structure (not shown in the figure) can be the same as the first conductive structure, and the second conductive structure can also be multiple, and the multiple second conductive structures are spaced apart.

[0207] When the first fixing part 21 is assembled with the circuit board, the fourth matching surface 213 is opposite to one side of the circuit board, and the fifth electric connection part 215 on the fourth matching surface 213 is in contact with the second conductive structure on one side of the circuit board to realize electrical connection, so as to realize the electrical connection between the second electrode layer 16 on the microneedle electrode 10 and the second conductive structure on the circuit board through the fourth electric connection part 214 and the fifth electric connection part 215, and realize the vertical electrical connection between the microneedle electrode 10 and the circuit board.

[0208] The fourth electric connection part 214 and the fifth electric connection part 215 can also be multiple (refer to Figure 25), and the multiple fourth electric connection parts 214 are spaced apart on the first matching surface 211, and the multiple fifth electric connection parts 215 are spaced apart on the fourth matching surface 213. Continue to refer to Figure 19, the fourth electric connection part 214 and the fifth electric connection part 215 are electrically connected in a one-to-one correspondence manner.

[0209] The multiple fourth electric connection parts 214 can be in contact with and electrically connected to the multiple second electrode layers 16 on the multiple microneedle structures 11, so that the fourth electric connection part 214 is electrically connected to the microneedle structure 11 and the second electrode layer 16 on the microneedle structure 11 in a one-to-one correspondence manner. The multiple fifth electric connection parts 215 can be in contact with and electrically connected to the multiple second conductive structures, so that the fifth electric connection part 215 is electrically connected to the second conductive structure in a one-to-one correspondence manner, so that the multiple second electrode layers 16 on the multiple microneedle structures 11 are electrically connected to the multiple second conductive structures on the circuit board in a one-to-one correspondence manner, ensuring the independent electrical connection between each microneedle structure 11 and the circuit board, so that the electrical signal on each microneedle structure 11 can be independently led out to the circuit board.

[0210] Alternatively, in some examples, a sixth electric connection part can be provided on the first matching surface 211 of the first fixing part 21, and the sixth electric connection part can extend to the fourth matching surface 213 side. When the first fixing part 21 is assembled with the microneedle electrode 10, the sixth electric connection part on the first matching surface 211 is in electrical contact with the second electrode layer 16 on the first surface 13. When the first fixing part 21 is assembled with the circuit board, one end of the sixth electric connection part extending to the fourth matching surface 213 side can be in electrical contact with the second conductive structure on one side of the circuit board, and the electrical connection between the second electrode layer 16 on the microneedle electrode 10 and the circuit board is realized through the sixth electric connection part, which simplifies the structural design of the electric connection part on the first fixing part 21.

[0211] The sixth electric connection part can also be multiple, and the multiple sixth electric connection parts are arranged on the first fitting surface 211 at intervals, and each sixth electric connection part extends to the fourth fitting surface 213 side. When the first fixing part 21 is assembled with the microneedle electrode 10, the multiple sixth electric connection parts can be electrically connected with the second electrode layer 16 on the multiple microneedle structures 11 respectively, and when the first fixing part 21 is assembled with the circuit board, the multiple sixth electric connection parts can be electrically connected with the multiple second conductive structures on the circuit board, so as to realize the independent corresponding electric connection of each microneedle structure 11 and the circuit board.

[0212] In order to enhance the assembly firmness of the connector, the microneedle assembly and the circuit board, a limiting structure can be arranged on the circuit board and the connector. Hereinafter, the first fixing part and the second fixing part of the connector are taken as examples of L-shaped structures to illustrate the limiting structure on the connector and the circuit board.

[0213] FIG. 20 is a top view of another connector provided by an embodiment of the present application.

[0214] For example, referring to FIG. 20, the first main body part 21a of the first fixing part 21 can further include a first assembly surface 217, and the first fitting surface 211 and the first assembly surface 217 can be located on opposite sides of the first main body part 21a respectively, such as on opposite sides of the first main body part 21a in the thickness direction (z direction). For example, the first main body part 21a includes a third fixing part 21b and a fourth fixing part 21c perpendicular to each other, the outer side surface of the third fixing part 21b forms the first fitting surface 211, and the side of the fourth fixing part 21c facing away from the third fixing part 21b can form the first assembly surface 217. The first limiting structure 218 can be arranged on the first assembly surface 217.

[0215] The second main body part 22a of the second fixing part 22 can further include a second assembly surface 229, and the second fitting surface 221 and the second assembly surface 229 can be located on opposite sides of the second main body part 22a respectively, such as on opposite sides of the second main body part 22a in the thickness direction (z direction). For example, the second main body part 22a includes a first fixing part 22b and a second fixing part 22c perpendicular to each other, the outer side surface of the first fixing part 22b forms the second fitting surface 221, and the side of the second fixing part 22c facing away from the first fixing part 22b can form the second assembly surface 229. The second limiting structure 230 can be arranged on the second assembly surface 229.

[0216] The second limiting structure 230 can be inserted and fitted with the first limiting structure 218. In actual use of the connector to assemble the microneedle electrode on the circuit board, the first limiting structure 218 of one connector can be inserted and fitted with the second limiting structure 230 of an adjacent connector.

[0217] For example, the first limiting structure 218 can be a protruding structure, and the second limiting structure 230 can be a groove structure, so that the first limiting structure 218 can be inserted into the second limiting structure 230 to realize the insertion fit of the first limiting structure 218 and the second limiting structure 230. The groove structure can be a blind groove on the second body part 22a, or the groove structure can also be a through groove (e.g., in the height direction) through the second body part 22a. For example, taking the second body part 22a as an L-shaped structure, the groove structure can pass through the second fixed part 22c of the second body part 22a in the height direction.

[0218] Of course, in some other examples, the first limiting structure 218 can be a groove structure, and the second limiting structure 230 can be a protruding structure. Alternatively, the first limiting structure 218 and the second limiting structure 230 can be other structures capable of realizing insertion fit.

[0219] FIG. 21 is a top view of a circuit board according to an embodiment of the present application.

[0220] Referring to FIG. 21, the circuit board 103 can further be provided with a third limiting structure 143, and the circuit board 103 can further be provided with a fourth limiting structure (not shown). The third limiting structure 143 can be inserted into the second limiting structure on the second body part of the second fixing part, and the fourth limiting structure can be inserted into the first limiting structure on the first body part of the first fixing part.

[0221] FIG. 22 is a top view of the connector of FIG. 20 assembled with a plurality of microneedle electrodes.

[0222] Referring to FIG. 22, taking the microneedle electrode 10 including the first electrode 10a, the second electrode 10b, and the third electrode 10c as an example, the first electrode 10a is assembled with the connector 20a to form a microneedle assembly 102a, the second electrode 10b is assembled with the connector 20b to form a microneedle assembly 102b, and the third electrode 10c is assembled with the connector 20c to form a microneedle assembly 102c. The microneedle assembly 102a, the microneedle assembly 102b, and the microneedle assembly 102c are sequentially assembled on the circuit board 103 in the thickness direction.

[0223] The first limiting structure on the first body part of one of the connectors can be inserted into the second limiting structure on the second body part of the adjacent connector, for example, the first limiting structure 218 on the first body part 21a of the connector 20a is inserted into the second limiting structure 230 on the second body part 22a of the connector 20b, and the same applies to the other connectors, so that the plurality of microneedle assemblies arranged in sequence can be inserted into each other through the first limiting structure 218 and the second limiting structure 230.

[0224] When assembling the plurality of microneedle assemblies with the circuit board 103, the plurality of microneedle assemblies are inserted together through the first limiting structure 218 and the second limiting structure 230, which facilitates improving the alignment accuracy between the microneedle assemblies, enhances the alignment effect between the microneedle assemblies, and facilitates improving the detection accuracy. Moreover, it is convenient for assembly and also facilitates improving the assembly stability of the plurality of microneedle assemblies with the circuit board 103.

[0225] The plurality of microneedle assemblies are sequentially distributed on the circuit board, i.e., the plurality of connectors are sequentially assembled on the circuit board. The second limiting structure 230 on the second body portion of the connector at the leading end can be inserted and matched with the third limiting structure 143 on the circuit board 103. The first limiting structure 218 on the first body portion of the connector at the trailing end is inserted and matched with the fourth limiting structure 144 on the circuit board 103.

[0226] For example, referring to FIG. 22, the microneedle assembly 102a, the microneedle assembly 102b, and the microneedle assembly 102c are sequentially assembled on the circuit board 103 in the thickness direction, i.e., the connector 20a, the connector 20b, and the connector 20c are sequentially assembled on the circuit board 103. In the row of the connector 20a, the connector 20b, and the connector 20c, the end where the connector 20a is located can be the leading end, and the end where the connector 20c is located can be the trailing end. The second limiting structure 230 of the second body portion 22a of the connector 20a is inserted and matched with the third limiting structure 143 on the circuit board 103, and the first limiting structure 218 of the first body portion 21a of the connector 20c is inserted and matched with the fourth limiting structure 144 on the circuit board 103. This facilitates positioning when the microneedle assembly is assembled with the circuit board 103, and the third limiting structure 143 and the fourth limiting structure 144 limit the plurality of connectors (microneedle assemblies) that are inserted together, which further enhances the assembly stability of the plurality of microneedle assemblies with the circuit board 103 and ensures high vertical assembly and electrical connection of the microneedle electrode 10 with the circuit board 103.

[0227] For example, the second limiting structure 230 can be a groove structure, and the third limiting structure 143 on the circuit board 103 can be a protrusion structure. Of course, in some other examples, the second limiting structure 230 can be a protrusion structure, and the third limiting structure 143 can be a groove structure. Alternatively, the second limiting structure 230 and the third limiting structure 143 can also be other structures that can achieve insertion and matching.

[0228] The first limiting structure 218 can be a protruding structure, and the fourth limiting structure 144 on the circuit board 103 can be a groove structure. For example, the fourth limiting structure 144 can be formed by a protruding block 144a and a protruding block 144b on the circuit board 103, and the protruding block 144a and the protruding block 144b can have a gap therebetween.

[0229] Of course, in some other examples, the fourth limiting structure can be a protruding structure, and the first limiting structure 218 can be a groove structure. Alternatively, the first limiting structure 218 and the fourth limiting structure can also be other structures capable of achieving plug-in cooperation.

[0230] The shapes of the third limiting structure 143 and the fourth limiting structure on the circuit board 103 are not limited, and can only achieve cooperation with the second limiting structure 230 and the first limiting structure 218 to achieve the limiting and positioning effect on the microneedle assembly.

[0231] FIG. 23 is a front view of the circuit board in FIG. 21, and FIG. 24 is a right side view of the circuit board in FIG. 21.

[0232] For example, as shown in FIGS. 23 and 24, the third limiting structure 143 can be a protruding structure, and the second limiting structure can be a groove structure. The third limiting structure 143 can include a plug-in portion 1431 and a buckle portion 1432. The plug-in portion 1431 is protrudingly arranged on one side of the circuit board 103. One end of the buckle portion 1432 can be fixed to the plug-in portion 1431, and the other end of the buckle portion 1432 can extend outwardly and obliquely away from the plug-in portion 1431, so that an oblique included angle between the buckle portion 1432 and the plug-in portion 1431 is less than 90°.

[0233] The buckle portion 1432 can be a sheet-like structure fixed to the plug-in portion 1431 at one end. Under the action of an external force, the buckle portion 1432 can be elastically deformed. For example, under the action of an external force, the other end of the buckle portion 1432 can move toward the plug-in portion 1431 and be elastically compressed. When the external force is removed, the other end of the buckle portion 1432 can move away from the plug-in portion 1431 and be reset under the action of elastic recovery of the buckle portion 1432. The size of the third limiting structure 143 after the buckle portion 1432 is not elastically compressed or reset can be greater than the size of the second limiting structure. For example, the total size of the buckle portion 1432 and the plug-in portion 1431 in the thickness direction (z direction) can be greater than the size of the second limiting structure in the thickness direction.

[0234] As shown in FIG. 22, when the microneedle assembly 102a at the first end is assembled with the circuit board 103, the third fitting surface of the second body part 22a in the connector 20a is opposite to one side of the circuit board 103, the second limiting structure 230 of the second body part 22a in the connector 20a is aligned with the third limiting structure 143, the microneedle assembly 102a and the circuit board 103 are pressed, the buckle part 1432 is compressed (the buckle part 1432 moves towards the insertion part 1431), and the buckle part 1432 and at least part of the insertion part 1431 of the third limiting structure 143 can pass through the second limiting structure 230. After passing through the second limiting structure 230, the buckle part 1432 is elastically reset, part of the buckle part 1432 can be above one side (length direction side) of the second body part 22a, and the buckle part 1432 can play a clamping limiting role on the second fixing part 22, so that the second fixing part 22 and the entire microneedle assembly are tightly assembled on the circuit board 103 and are not easy to be taken off from the circuit board 103.

[0235] The shape of the buckle part 1432 can be an arrow-like shape, a triangular shape, or other regular or irregular shape.

[0236] The shape of the first limiting structure 218 on the first fixing part 21 can correspond to the shape of the second limiting structure 230 on the second fixing part 22. The shapes of the first limiting structure 218 and the second limiting structure 230 are not limited as long as they can be correspondingly matched and inserted.

[0237] As in some examples, the first limiting structure 218 can be a rectangular protruding structure (as shown in FIG. 20), and the second limiting structure 230 can be a rectangular recess structure.

[0238] FIG. 25 is a top view of another connector provided in an embodiment of the application.

[0239] Alternatively, as shown in FIG. 25, the first limiting structure 218 can be a semicircular protruding structure, and the second limiting structure 230 can be a semicircular recess structure.

[0240] Of course, in some other examples, the profiles of the first limiting structure 218 and the second limiting structure 230 can also be other regular or irregular shapes.

[0241] The first limiting structure 218 on the first assembly surface 217 can be one or can be spaced apart and provided with multiple. The second limiting structure 230 on the second assembly surface 229 can be one or can be spaced apart and provided with multiple.

[0242] It should be noted that the plurality of microneedle electrodes are assembled on the circuit board through the plurality of connectors respectively, the first limiting structure 218 on the plurality of connectors can be the same, and the second limiting structure 230 on the plurality of connectors can also be the same. For example, the first limiting structure 218 can be a rectangular protruding structure, and the second limiting structure 230 can be a rectangular groove structure (see FIG. 23). Alternatively, the first limiting structure 218 can be a semicircular protruding structure, and the second limiting structure 230 can be a semicircular groove structure.

[0243] Alternatively, the first limiting structure 218 on part of the connectors can be the same, and the first limiting structure 218 on part of the connectors can be different. The second limiting structure 230 on part of the connectors can also be the same, and the second limiting structure 230 on part of the connectors can also be different.

[0244] FIG. 26 is a top view of another connector assembled with a plurality of microneedle electrodes according to an embodiment of the present application.

[0245] For example, referring to FIG. 26, taking the microneedle electrodes including the first electrode 10a, the second electrode 10b and the third electrode 10c as an example, the microneedle assembly 102a, the microneedle assembly 102b and the microneedle assembly 102c are sequentially assembled on the circuit board 103 along the thickness direction. In FIG. 26, it is shown that the first electrode 10a and the third electrode 10c can be single-sided electrode layer microneedle electrodes, i.e., only the second surface of the first electrode 10a and the third electrode 10c has the first electrode layer 15. In the connector 20a and the connector 20c assembled with the first electrode 10a and the third electrode 10c, the first fixing member 21 has the first electrical connection part (not shown in the figure) and the second electrical connection part 226 (or has the third electrical connection part) respectively, so as to be electrically connected with the first electrode layer 15 of the microneedle electrode 10 and the first conductive structure (not shown in the figure) of the circuit board 103 respectively.

[0246] The second electrode 10b can be a double-sided electrode, i.e., the first surface of the second electrode 10b has the second electrode layer 16, and the second surface of the second electrode 10b has the first electrode layer 15. In the connector 20b assembled with the second electrode 10b, the second fixing member 22 can have the first electrical connection part (not shown in the figure) and the second electrical connection part 226 (or has the third electrical connection part) respectively, so as to be electrically connected with the first electrode layer 15 of the microneedle electrode 10 and the first conductive structure (not shown in the figure) of the circuit board 103 respectively. The first fixing member 21 can have the fourth electrical connection part (not shown in the figure) and the fifth electrical connection part 215 (or has the sixth electrical connection part) respectively, so as to be electrically connected with the second electrode layer 16 of the microneedle electrode 10 and the second conductive structure (not shown in the figure) of the circuit board 103 respectively.

[0247] The second limiting structure 230 on the second fixing member 22 of the connector 20a at the head end can be a rectangular groove structure to realize the plug-in assembly of the second limiting structure 230 and the third limiting structure 143 on the circuit board 103. The first limiting structure 218 on the first fixing member 21 of the connector 20c at the tail end can be a rectangular protruding structure to realize the plug-in assembly of the first limiting structure 218 and the fourth limiting structure 144 on the circuit board 103.

[0248] The first limiting structure on the first fixing member 21 of the connector 20a and the connector 20b can be a semicircular protruding structure respectively, and the second limiting structure on the second fixing member 22 of the connector 20b and the connector 20c can be a semicircular groove structure respectively.

[0249] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances. The terms "first", "second", "third", "fourth" and the like (if any) are used to distinguish similar objects, and do not necessarily be used to describe a specific order or sequence.

[0250] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A connector for realizing electrical connection between a microneedle electrode and a circuit board, characterized in that, include: A first fastener, the first fastener including a first mating surface; The second fastener includes a second mating surface and a third mating surface, wherein the second mating surface is parallel to the first mating surface and perpendicular to the third mating surface; The first fixing member and the second fixing member are respectively used to assemble on opposite sides of the microneedle electrode. The first mating surface is opposite to and parallel to the first surface of the microneedle electrode, and the second mating surface is opposite to and parallel to the second surface of the microneedle electrode. The second fixing member is electrically connected to the microneedle electrode. The second fastener is also used to assemble with the circuit board and achieve electrical connection, and the third mating surface is used to be opposite to and parallel to one side of the circuit board.

2. The connector according to claim 1, characterized in that, The first mating surface has a first insertion portion, which is used to insert and mate with a first insertion position on the microneedle electrode; The second mating surface has a second insertion portion, which is used to insert and mate with the second insertion position on the microneedle electrode.

3. The connector according to claim 2, characterized in that, The third mating surface has a third insertion position, which is used to insert and mate with a third insertion part on one side of the circuit board.

4. The connector according to any one of claims 1-3, characterized in that, The second mating surface is provided with a plurality of first electrical connection portions. When the second fixing member is assembled with the microneedle electrode, the plurality of first electrical connection portions are used to electrically connect with a plurality of first electrode layers on the second surface of the microneedle electrode. The third mating surface is provided with a plurality of second electrical connection portions that are electrically connected to a plurality of first electrical connection portions. When the second fixing member is assembled with the circuit board, the plurality of second electrical connection portions are used to electrically connect to a plurality of first conductive structures on one side of the circuit board.

5. The connector according to any one of claims 1-3, characterized in that, The second mating surface is provided with a plurality of third electrical connection portions, each of the third electrical connection portions extending to the third mating surface side. When the second fixing member is assembled with the microneedle electrode, the plurality of third electrical connection portions are used to electrically connect with a plurality of first electrode layers on the second surface of the microneedle electrode. When the second fastener is assembled with the circuit board, one end of the plurality of third electrical connection portions extends to the third mating surface side for corresponding electrical connection with the plurality of first conductive structures on the circuit board.

6. The connector according to any one of claims 1-5, characterized in that, The first fastener also includes a fourth mating surface, which is perpendicular to the first mating surface; The first fastener is also used for assembly with the circuit board, and the fourth mating surface is used to be opposite to and parallel to one side of the circuit board.

7. The connector according to claim 6, characterized in that, The fourth mating surface has a fourth insertion position, which is used to insert and mate with a fourth insertion part on one side of the circuit board.

8. The connector according to claim 6, characterized in that, The first mating surface is provided with a plurality of fourth electrical connection parts. When the first fixing member is assembled with the microneedle electrode, the plurality of fourth electrical connection parts are used to electrically connect with a plurality of second electrode layers on the second surface of the microneedle electrode. The fourth mating surface is provided with a plurality of fifth electrical connection portions that are electrically connected to the plurality of fourth electrical connection portions. When the first fixing member is assembled with the circuit board, the plurality of fifth electrical connection portions are electrically connected to a plurality of second conductive structures on one side of the circuit board.

9. The connector according to any one of claims 1-5, characterized in that, The first fastener includes an insulating first main body portion, and a portion of the outer surface of the first main body portion forms the first mating surface; The second fastener includes an insulating second body portion, and a portion of the outer surface of the second body portion forms the second mating surface and the third mating surface.

10. The connector according to claim 9, characterized in that, The second main body includes a block structure, and a portion of the outer surface of the block structure forms the second mating surface and the third mating surface; Alternatively, the second main body includes a first fixing part and a second fixing part, the first fixing part and the second fixing part are perpendicular to each other, the outer surface of the first fixing part forms the second mating surface, and the outer surface of the second fixing part forms the third mating surface.

11. The connector according to claim 9 or 10, characterized in that, The first main body includes a plate-like structure, and a portion of the outer surface of the plate-like structure forms the first mating surface; Alternatively, the first main body includes a third fixing part and a fourth fixing part, the third fixing part and the fourth fixing part being perpendicular to each other, the outer surface of the third fixing part forming the first mating surface, and the outer surface of the fourth fixing part forming a fourth mating surface perpendicular to the first mating surface, the fourth mating surface being used to be opposite to and parallel to one side of the circuit board.

12. The connector according to claim 9, characterized in that, The first main body also includes a first mounting surface, the first mounting surface and the first mating surface are respectively located on opposite sides of the first main body, and the first mounting surface has a first limiting structure; The second main body also includes a second mounting surface, the second mounting surface and the second mating surface are respectively located on opposite sides of the second main body, and the second mounting surface has a second limiting structure; When multiple connectors are arranged in sequence, the first limiting structure in one of the connectors is used to engage with the second limiting structure of the adjacent connector. The second limiting structure of the connector at the first end is used to engage with the third limiting structure on the circuit board, and the first limiting structure of the connector at the tail end is used to engage with the fourth limiting structure on the circuit board.

13. A microneedle assembly, characterized in that, The device includes a microneedle electrode and a connector as described in any one of claims 1-12, wherein the microneedle electrode includes a first surface and a second surface that are opposite to each other. The first fixing member and the second fixing member of the connector are respectively assembled with the microneedle electrode. The first mating surface of the first fixing member is opposite to and parallel to the first surface, the second mating surface of the second fixing member is opposite to and parallel to the second surface, and the second fixing member is electrically connected to the microneedle electrode.

14. The microneedle assembly according to claim 13, characterized in that, The first surface and the second surface are located on opposite sides of the microneedle electrode along the thickness direction; The microneedle electrode includes a base, multiple spaced microneedle structures, and multiple spaced first electrode layers, with the multiple microneedle structures located on one side of the base along the height direction; The first electrode layer is located on the second surface, and each of the microneedle structures has a first electrode layer, with the first electrode layer on each microneedle structure extending to the base; The first fixing member and the second fixing member are respectively assembled with the base, and the second fixing member is electrically connected to the first electrode layer.

15. A monitoring device, characterized in that, The device includes a circuit board, microneedle electrodes, and a connector as described in any one of claims 1-12, wherein the microneedle electrodes include a first surface and a second surface that are opposite to each other. The first fixing member and the second fixing member of the connector are respectively assembled with the microneedle electrode. The first mating surface of the first fixing member is opposite to and parallel to the first surface, the second mating surface of the second fixing member is opposite to and parallel to the second surface, and the second fixing member is electrically connected to the microneedle electrode. The second fastener is assembled with the circuit board and electrically connected thereto, and the third mating surface of the second fastener is opposite to and parallel to one side of the circuit board.

Images