Surface-mounted hollow ion selective electrode

Abstract

The utility model provides a patch type hollow ion selective electrode, which comprises a substrate electrode and an electrode patch (42), the front of the substrate electrode is provided with a front conductive circuit (2) and an electrode loading area (1), the front conductive circuit (2) is provided with one or more than one via hole (24), and the electrode loading area (1) is provided with one or more than one electrode loading area (2). The electrode loading area (1) comprises an electrode detection layer and a first hollow hole (13), the first hollow hole (13) penetrates through the front surface and the back surface of the substrate electrode, and an anti-overflow structure is arranged on the outer side of the electrode loading area (1); and the electrode patch (42) is fixedly arranged on the back surface of the substrate electrode and completely covers the position of the first hollow hole (13).

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electrochemical sensor relates to a patch type openwork ion selective electrode. BACKGROUND

[0002] The electrode is the most important sensitive component of the electrochemical sensor. Generally, the sensor must have two or more electrodes, and the three-electrode system is widely used at present. The three-electrode system includes a working electrode, a reference electrode and a counter electrode. The three electrodes of the traditional three-electrode system are not integrated on the same plane, and the distance between the electrodes is far. During the electrochemical test, the concentration difference polarization is easy to occur between the working electrode and the counter electrode, which affects the test accuracy. In addition, the traditional three-electrode system is large in size, which is not convenient for the design and processing of micro-sensors, and limits the application of the three-electrode system.

[0003] The existing portable three-electrode structure specifically integrates the working electrode, the counter electrode and the reference electrode on the same plane, greatly reduces the size of the three-electrode system, and is convenient for the design and processing of micro-sensors.

[0004] However, the working electrode modification layer of the above electrode is fixed and cannot be replaced according to the detection target, which may cause waste during use and some inconvenience during the use of the electrode. At the same time, on the basis of the three-electrode coplanar surface, different modification layers are modified on the surfaces of the three electrodes, which also brings difficulty to the electrode processing and processing, and the electrode processing cost is large, which is also inconvenient to use.

[0005] The existing electrode all technical solutions propose to separate the key working electrode modification layer, and install and fix it according to the detection molecular demand in the later period, but the structure installed in the later period still has a small gap. When the detection liquid drops are added at the electrode modification hole position and react with the electrode modification layer, the small gap between the electrode modification layer and the back of the substrate causes the area of the electrode detection area to change and cannot be fixed, thereby greatly affecting the stability and accuracy of the detection data. In order to transmit the electric signal generated by the electrode patch, a ring-shaped conductive structure is arranged in the contact area between the electrode patch and the electrode substrate, and the electric signal is transmitted to the electrode pin by the ring-shaped structure. The effect of the ring-shaped structure for conducting and transmitting signals is not good, which affects the sensitivity of the electrode.

[0006] In order to further overcome the above problems, the patent aims to provide a patch type openwork electrode, which can freely assemble the selective electrode patch according to the detection object demand, fix the electrode detection area, prevent the detection liquid from overflowing or leaking, and achieve the performance level of the normal three-electrode coplanar electrode in terms of detection accuracy and stability. While ensuring the performance of the electrode detection, it is more flexible, reduces the processing and use cost, and opens up a broader application prospect for micro-electrodes. UTILITY MODEL CONTENTS

[0007] The utility model provides a kind of patch type hollow ion selective electrode.

[0008] The utility model discloses a kind of patch type hollow ion selective electrode, including substrate electrode and electrode patch (42), positive conductive circuit (2) and electrode loading area (1) are provided on substrate electrode front, one or more than one through hole (24) is equipped on positive conductive circuit (2), electrode loading area (1) includes electrode detection layer and first hollow hole (13), first hollow hole (13) penetrates substrate electrode front and back, electrode loading area (1) outside is provided with anti-overflow structure;Electrode patch (42) is fixedly installed on substrate electrode back, and completely covers first hollow hole (13) position.

[0009] Electrode detection layer includes the first electrode layer (11) and the second electrode layer (12) that are coplanarly arranged and not interconnected, first electrode layer (11) and second electrode layer (12) are adjacently provided with first hollow hole (13) between, first electrode layer (11) and second electrode layer (12) are connected with positive conductive circuit (2) respectively.

[0010] Further, positive conductive circuit (2) includes first line (21), second line (22) and third line (23) not connected with each other, first line (21) is connected with first electrode layer (11), second line (22) is connected with second electrode layer (12), third line (23) is not directly connected with hollow hole (13), one or more than one through hole (24) is provided on third line (23).

[0011] Further, substrate front is also provided with electrode pin, including coplanar equidistant first pin (31), second pin (32) and third pin (33), and are respectively connected with first line (21), second line (22) and third line (23) corresponding.

[0012] Above three electrode pins and according to conventional three-electrode coplanar electrode, parallel equidistant arrangement, and the entire electrode size is set to comply with USB size, three pin metal area size and distance can also be adjusted according to demand, facilitate transmission electric signal.

[0013] As shown in the accompanying Figure 1 It is the front view of patch type hollow ion selective electrode.

[0014] The positions of the first electrode layer (11), the second electrode layer (12), and the first hollow hole (13) can be referenced to the arrangement of the three electrodes on the surface of a conventional three-electrode coplanar electrode. The distance between the three electrodes should be minimized to eliminate concentration polarization and improve electrode sensitivity. In this embodiment, the first electrode layer (11) is partially annular, enclosing the first hollow hole (13) inside the annulus. The second electrode layer (12) is located on the other side of the missing annulus shape. The first electrode layer (11) corresponds to the counter electrode, the second electrode layer (12) corresponds to the reference electrode, and the position of the first hollow hole (13) corresponds to the working electrode. This arrangement greatly reduces the distance between the working electrode and the counter electrode, promoting miniaturization of the coplanar electrode and improving sensitivity. The electrode arrangement in this embodiment can also be such that the first electrode layer (11) and the second electrode layer (12) are symmetrically arranged on both sides of the first hollow hole (13). The arrangement of the three electrodes can be adjusted according to actual needs.

[0015] A back conductive line (4) is provided on the back side of the substrate electrode, and a through hole (24) is provided in the area where the back conductive line (4) is located. The front conductive line (2) and the back conductive line (4) are interconnected through the through hole (24).

[0016] As attached Figure 2 The image shown is a schematic diagram of the back side of a patch-type hollow ion-selective electrode. Figure 1 .

[0017] The third electrode line (23) is not connected to the first hollow hole (13). That is, the third line (23) on the front of the electrode is not connected to the first hollow hole, i.e. the working electrode position. Instead, it is connected to the back conductive line (4) on the back of the base electrode through the through hole (24) in the third line (23). Then, it is connected to the electrode patch subsequently mounted in the first hollow hole (13) and transmits electrical signals. This not only reduces the electrode volume and makes the electrode surface line arrangement simpler, but also makes the electrical signal transmission smoother. This fits the design concept of this utility model of loading the working electrode as an electrode sheet separately, avoiding the disadvantage of the loaded electrode sheet affecting the transmission of electrical signals due to poor contact.

[0018] The vias are typically filled with a metal layer that allows the conductive lines to pass through the metal layers of the conductive lines on the front and back sides of the substrate. The number of vias can be set to one or more, usually three, to ensure that the front and back sides of the substrate are connected and that electrical signals are transmitted normally.

[0019] A patch electrode fixing area (41) is also provided on the back of the base electrode. The patch electrode fixing area (41) is located outside the first hollow hole (13). Insulating double-sided tape (43) can be installed in the patch electrode fixing area (41). The electrode patch (42) is tightly attached to the back of the base electrode through the insulating double-sided tape (43).

[0020] The insulating double-sided adhesive tape is provided with a second hollow hole at a position corresponding to the first hollow hole (13), and the second hollow hole is completely consistent with the first hollow hole (13) in shape and size.

[0021] The patch type hollow ion selective electrode further comprises a conductive adhesive tape (44) for fixing the electrode patch (42) to the back of the substrate, one end of which is pasted on the back of the selective electrode patch (42), and the other end is pasted on the back of the substrate electrode and in contact with the back conductive circuit (4) and covers the through hole (24).

[0022] As shown in Figs. 1 to 3, they are respectively schematic diagrams of the back of the patch type hollow ion selective electrode, Figure 3 Figure 4 and the side structure of the patch type hollow ion selective electrode. Figure 5 Figures 2-4 Figure 6

[0023] The conventional three-electrode coplanar electrode needs to be modified with different metals or modified layers in the working electrode, counter electrode and reference electrode regions, but it is difficult to achieve in actual processing. Different sequences and processes of three-electrode processing may affect the processing of other electrodes. Especially for the working electrode modified with a core detection layer, the process effect may be affected by the other two electrodes or more complicated processes need to be taken to avoid the influencing factors. The working electrode is separated as a component in the patent, and the electrode patch can be processed or selected separately. The process is more simple and convenient, more types of modification processing can be carried out, more target objects can be detected, and more targeted selection can be made for different target objects, so that the electrode detection range and detection method are greatly expanded.

[0024] In order to tightly fix the electrode patch on the back of the substrate, the utility model designs a multilayer structure, which is insulating double-sided adhesive tape, electrode patch and conductive adhesive tape. The insulating double-sided adhesive tape is pasted on the back of the substrate electrode, and has a hole at the same position as the first hollow hole on the substrate. After tearing off the upper liner paper on the other side, the electrode patch can be pasted and fixed. Because the double-sided adhesive tape is insulating, it does not affect the reaction and signal transmission on the electrode patch. Then the electrode patch is covered with conductive adhesive tape to fix it on the back of the substrate again and connect it with the back conductive circuit, so as to realize the electrical signal transmission from the electrode patch to the conductive adhesive tape, the back conductive circuit and the through hole to the third circuit and the third pin on the front.

[0025] ​​​​The electrode patch is fixed on the back of the base, and when the hollow electrode is used, the to-be-measured liquid is added at the first hollow hole position on the front surface, that is, only the part of the electrode patch corresponding to the first hollow hole position is the electrode detection area, and the electrochemical reaction area is also calculated based on the electrode detection area, but when the electrode patch directly contacts the back of the base, it is impossible to completely and closely adhere, and there will be small gaps between the materials, and the to-be-measured liquid may overflow the small gaps, and thus the electrode detection area changes, affecting the electrode detection result.

[0026] The contact area between the back conductive circuit and the conductive adhesive tape can be appropriately increased, that is, the metal area of the back conductive circuit is increased, so that the contact area of the conductive circuit and the conductive adhesive tape is as large as possible, thereby increasing the conductive area, so that the conductive effect is better and the electrical signal transmission effect is better.

[0027] The utility model discloses a double -sided adhesive tape is used for fixing electrode patch to the greatest extent, fills interval gap and reduces the small gap of electrode patch and back base surface as far as possible, and then avoids the area of electrode detection area change, cannot be fixed, thereby greatly influences the stability and accuracy of detection data, and the subsequent secondary fixing with conductive adhesive tape further prevents electrode patch from moving under external force, covers and protects electrode patch, simultaneously expands the contact area of conductive adhesive tape and electrode patch as far as possible, the contact area of conductive adhesive tape and back conductive circuit, thereby connects electrode patch and back conductive circuit, facilitates signal transmission, and excellent effect is obtained, and the electrode performance is more sensitive and stable.

[0028] The front conductive circuit (2), the electrode pin, the electrode detection layer and the back conductive circuit (4) surface modification metal layer are used as the base metal, and the metal types include copper and silver.

[0029] The first electrode layer (11) surface of the electrode detection layer is further provided with a modification layer, the modification layer material includes carbon and platinum, the second electrode layer (12) surface of the electrode detection layer is provided with a modification layer, and the modification layer material includes a silver-silver chloride layer.

[0030] The electrode patch (42) base material includes metal, and the metal material includes copper and silver.

[0031] The side of the electrode patch (42) in contact with the back of the base electrode can be modified with an ion-selective modification layer, and the specific material of the ion-selective modification layer can be arbitrarily replaced according to detection requirements, including metal, enzyme and porous metal, and the metal types include gold, silver, platinum, bismuth, chromium and copper.

[0032] The electrode patch material can be selected according to actual needs, such as carbon, gold, silver, platinum, bismuth, chromium and copper, and different types of metal ions can be detected according to the electrode patch material.

[0033] The metal sheet can also be directly used as the electrode patch substrate, and a metal or active enzyme, a nanoporous metal layer or other ion-selective materials are modified on the surface of the metal sheet as a modification layer. For example, a gold, silver, platinum, bismuth, chromium, copper, nickel or other metal film is modified on the copper sheet, and a specific biochemical molecule is selectively detected according to the type of the metal film, and is applied to the detection of specific substances such as biochemical molecules and heavy metals, that is, a specific electrode patch can be selected according to the target detection object, and the ion-selective electrode for detecting the target detection object is assembled.

[0034] The anti-overflow structure can be a dam (14) with a height of 0.2-0.8 mm, preferably 0.5 mm.

[0035] A protruding dam (14) structure is arranged outside the electrode loading area (1), that is, outside the first electrode layer (11), the second electrode layer (12) and the hollow hole (13) area. The dam (14) structure can be coated with ink or other process means, so as to prevent the measured liquid from overflowing outside the electrode or outside the electrode loading area (1) when being added to the hollow hole (13) position, thereby polluting the front conductive circuit (2) structure and affecting the detection result.

[0036] The first hollow hole (13) can have a circular or rectangular shape.

[0037] The hollow hole (13) can have a regular shape including a circle and a rectangle, and the hole area can be adjusted according to the required electrode detection area.

[0038] The utility model discloses the beneficial effects are:

[0039] (1) the utility model discloses three electrode coplanar structures are arranged in the same plane, and the first hollow hole is formed by digging a hole in the detection core area, and the working electrode is split into an assembly, which is used as an independent electrode patch for later installation. In order to avoid the electrode patch from directly contacting the back substrate and causing a small gap, which in turn causes the detection liquid to overflow and the electrode reaction area to change, affecting the detection accuracy, the utility model uses insulating double-sided adhesive tape to fix the electrode patch on the inside and fill the gap, and then uses conductive adhesive tape to fix the electrode patch on the outside and realize the transmission of electrical signals. The utility model ensures the sensitivity and accuracy of the electrode, solves the stability problem of the patch electrode, and further ensures the accuracy of the electrode.

[0040] (2) This utility model connects the back conductor line and the front conductive line through the conductive hole of the conductive substrate. The electrochemical reaction signal generated by the electrode patch in the first hollow hole area is transmitted to the electrode pin through this path and then transmitted out. While ensuring the electrode sensitivity and accuracy, it greatly reduces the coplanar electrode area of ​​the three electrodes, provides more conductive line layout schemes, greatly reduces the difficulty and cost of electrode electroplating, avoids secondary processing, optimizes the function and structural design of the standard electrode, and expands the application field of the electrode.

[0041] (3) By setting the core detection area of ​​the working electrode as an independent electrode patch that can be freely replaced, this utility model achieves the purpose of selecting different electrode modification layers according to the characteristics of the target analyte. At the same time, the material and modification layer of the independent electrode patch, which is the core detection layer, can be freely replaced and used immediately, making the selection of electrode patches more diversified and achieving the purpose of detecting a variety of different biochemical molecules by changing the electrode patch. Attached Figure Description

[0042] The utility model will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0043] Figure 1 This is a front view of a patch-type hollow ion-selective electrode. Figure Two

[0044] Figure 2 This is a schematic diagram of the back of a patch-type hollow ion-selective electrode. Figure 1 ;

[0045] Figure 3 This is a schematic diagram of the back of a patch-type hollow ion-selective electrode. Figure 2 ;

[0046] Figure 4 This is a schematic diagram of the back of a patch-type hollow ion-selective electrode. Figure 3 ;

[0047] Figure 5 This is a schematic diagram of the back of a patch-type hollow ion-selective electrode. Figure 4 ;

[0048] Figure 6 This is a schematic diagram of the side structure of a patch-type hollow ion-selective electrode.

[0049] Legend:

[0050] 1. Electrode loading area; 11. First electrode layer; 12. Second electrode layer; 13. First perforated hole; 2. Front conductive line; 21. First line; 22. Second line; 23. Third line; 24. Through hole; 31. First pin; 32. Second pin; 33. Third pin; 4. Back conductive line; 41. Patch electrode fixing area; 42. Electrode patch; 43. Insulating double-sided adhesive tape; 44. Conductive adhesive tape. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail with reference to the following specific embodiments and the accompanying drawings.

[0052] Example 1

[0053] As attached Figure 1 As shown, this utility model provides a patch-type hollow ion-selective electrode, including a PET plate electrode substrate. The electrode size is 12x35mm, and the thickness is 0.35mm. The substrate can be made of flexible polymer material, or conventional electrode materials such as epoxy resin, ceramic, silicon, and glass.

[0054] A front conductive line 2 and an electrode loading area 1 are provided on the front side of the substrate. The electrode loading area 1 includes an electrode detection layer and a first hollow hole 13 penetrating the substrate. The radius of the first hollow hole 13 is set to 1 mm. The electrode detection layer includes a first electrode layer 11 and a second electrode layer 12 that are coplanar and not interconnected. The first hollow hole 13 is provided adjacent to the first electrode layer 11 and the second electrode layer 12. The first electrode layer 11 and the second electrode layer 12 are respectively connected to the front conductive line 2.

[0055] The front conductive line 2 includes a first line 21, a second line 22 and a third line 23 that are not connected to each other. The first line 21 is connected to the first electrode layer 11, the second line 22 is connected to the second electrode layer 12, and the third line 23 is disposed outside the first hollow hole 13 and is not in contact with it.

[0056] The third line 23 is provided with three through holes 24. The through holes 24 are also located on the back conductive line 4 on the back side of the substrate and are interconnected with the third line 23 through the through holes 24.

[0057] The front side of the substrate is also provided with electrode pins, including a first pin 31, a second pin 32 and a third pin 33 that are coplanar and equidistant, and are respectively connected to the first line 21, the second line 22 and the third line 23.

[0058] like Figure 2As shown, the first hollow hole 13 and the back conductive circuit 4 are arranged on the back surface of the substrate, the back conductive circuit 4 is provided with a through hole 24, and the front conductive circuit 2 and the back conductive circuit 4 are interconnected through the through hole 24.

[0059] As shown in the drawings, Figures 3-6 As shown, the back surface of the substrate is further provided with an insulating double-sided adhesive tape 43, an electrode patch 42 and a conductive adhesive tape 44, the electrode patch 42 is tightly attached to the substrate through the insulating double-sided adhesive tape 43, completely covers the position of the first hollow hole 13, is provided with a second hollow hole at the position corresponding to the first hollow hole 13, and has a concentric shape with the first hollow hole 13 and a size corresponding to the size of the first hollow hole 13. The conductive adhesive tape 44 is arranged above the electrode patch 42, fixes the electrode patch 42 to the back surface of the substrate, completely covers the area where the electrode patch 42 and the through hole 24 are located, and is in contact with the back conductive circuit 4.

[0060] The insulating double-sided adhesive tape 43 is attached to the area where the patch electrode fixing area 41 is located, and the patch electrode fixing area 41 is not connected with the back conductive circuit 4.

[0061] The front conductive circuit 2, the electrode pin and the surface of the first electrode layer 11 of the electrode detection layer are coated with silver paste, the first electrode layer 11 is modified with carbon paste on the silver paste substrate, and the second electrode layer 12 is modified with silver-silver chloride paste with a thickness greater than 5 mu m.

[0062] The electrode patch 42 selects a copper sheet as a substrate, and a pure gold modification layer is modified on the surface of the copper sheet, and the overall thickness is 0.01-0.02 mm, the overall radius is 2 mm, and the shape can be circular or rectangular, and can also be freely set, and the area is greater than the area of the first hollow hole 13 and can completely cover the first hollow hole 13. The electrode patch adopts a copper bottom, is polished to be bright, is plated with silver, is finally plated with gold, and can only be single-sided processed on the side in contact with the substrate layer.

[0063] In order to be used in subsequent aspects, the front conductive circuit 2 on the front surface of the substrate can be coated with ink, and the periphery of the electrode loading area 1 is coated with a second layer of ink, only the areas where the electrode detection layer, the first hollow hole 13 and the electrode pin are located are exposed, and the thickness of each layer of ink is 10-20 mu m.

[0064] In order to prevent the measured liquid added in the electrode loading area 1 from overflowing, a protruding dam structure can also be arranged outside the electrode loading area 1, and an ink coating process is adopted, and the height of the dam is 0.5 mm.

[0065] Embodiment 2

[0066] The utility model provides a patch type hollow ion selective electrode, including PI board electrode substrate, electrode size is 12x35mm, thickness is 0.35mm.

[0067] The front surface of the substrate is provided with a front conductive circuit 2 and an electrode loading area 1, the electrode loading area 1 comprises an electrode detection layer and a first hollow hole 13 penetrating through the substrate, the first hollow hole 13 has a radius of 1 mm, the electrode detection layer comprises a first electrode layer 11 and a second electrode layer 12 which are coplanar and not interconnected, the first hollow hole 13 is arranged adjacent to the first electrode layer 11 and the second electrode layer 12, and the first electrode layer 11 and the second electrode layer 12 are respectively connected with the front conductive circuit 2.

[0068] The front conductive circuit 2 comprises a first circuit 21, a second circuit 22 and a third circuit 23 which are not connected with each other, the first circuit 21 is connected with the first electrode layer 11, the second circuit 22 is connected with the second electrode layer 12, and the third circuit 23 is arranged outside the first hollow hole 13 and is not connected with the first hollow hole 13.

[0069] The third circuit 23 is provided with three through holes 24, the through holes 24 are located on the back conductive circuit 4 of the back surface of the substrate, and the third circuit 23 is interconnected with the through holes 24.

[0070] The front surface of the substrate is further provided with electrode pins, including a first pin 31, a second pin 32 and a third pin 33 which are coplanar and equidistant, and are respectively connected with the first circuit 21, the second circuit 22 and the third circuit 23.

[0071] The back surface of the substrate is coplanarly provided with the first hollow hole 13 and the back conductive circuit 4, the back conductive circuit 4 is provided with the through hole 24, and the front conductive circuit 2 is interconnected with the back conductive circuit 4 through the through hole 24.

[0072] The back surface of the substrate is further provided with an insulating double-sided adhesive tape 43, an electrode patch 42 and a conductive adhesive tape 44, the electrode patch 42 is tightly attached to the substrate through the insulating double-sided adhesive tape 43, completely covers the position of the first hollow hole 13, and is provided with a second hollow hole at the position corresponding to the first hollow hole 13, the shape of the second hollow hole is concentric with that of the first hollow hole 13, and the size of the second hollow hole is consistent with that of the first hollow hole 13. The conductive adhesive tape 44 is arranged above the electrode patch 42 to fix the electrode patch 42 to the back surface of the substrate, completely covers the electrode patch 42 and the area where the through hole 24 is located, and is in contact with the back conductive circuit 4.

[0073] The surfaces of the front conductive circuit 2, the electrode pins and the first electrode layer 11 of the electrode detection layer are coated with silver paste, the first electrode layer 11 is decorated with carbon paste on the silver paste substrate, and the second electrode layer 12 is decorated with silver-silver chloride paste with a thickness greater than 5 μm.

[0074] The electrode patch 42 selects silver sheet as the substrate, a pure gold modification layer is modified on the surface of the silver sheet, the overall thickness is 0.01-0.02 mm, the overall radius is 2 mm, the shape can be circular or rectangular, and can be freely set, and the area is greater than the area of the first hollow hole 13 and can completely cover the first hollow hole 13. Only the side in contact with the substrate layer can be processed.

[0075] In order to be used in subsequent aspects, the front surface of the substrate can be coated with ink on the front surface of the substrate, and the electrode loading area 1 can be coated with a second layer of ink on the periphery, and only the electrode detection layer and the area where the electrode pins are located are exposed. The thickness of each layer of ink is 10-20 μm.

[0076] In order to prevent the liquid to be measured added in the electrode loading area 1 from overflowing, a protruding dam structure can also be arranged outside the electrode loading area 1, and an ink coating process is adopted, and the height of the dam is 0.2 mm.

[0077] Embodiment 3

[0078] The utility model provides a patch type hollow ion selective electrode, including ceramic electrode substrate, electrode size is 12x35mm, thickness is 0.35mm.

[0079] The front surface of the substrate is provided with a front surface conductive circuit 2 and an electrode loading area 1, the electrode loading area 1 includes an electrode detection layer and a first hollow hole 13 penetrating through the substrate, the first hollow hole 13 is arranged with a radius of 1 mm, the electrode detection layer includes a first electrode layer 11 and a second electrode layer 12 arranged in the same plane and not interconnected, and the first hollow hole 13 is arranged adjacent to the first electrode layer 11 and the second electrode layer 12, and the first electrode layer 11 and the second electrode layer 12 are connected with the front surface conductive circuit 2 respectively.

[0080] The front surface conductive circuit 2 includes a first circuit 21, a second circuit 22 and a third circuit 23 which are not connected with each other, the first circuit 21 is connected with the first electrode layer 11, the second circuit 22 is connected with the second electrode layer 12, and the third circuit 23 is arranged outside the first hollow hole 13 and is not connected with the first hollow hole 13.

[0081] Three through holes 24 are arranged on the third circuit 23, the through holes 24 are located on the back surface conductive circuit 4 of the back surface of the substrate, and the third circuit 23 is interconnected through the through holes 24.

[0082] The front surface of the substrate is also provided with electrode pins, including a first pin 31, a second pin 32 and a third pin 33 arranged in the same plane and equidistantly, and connected with the first circuit 21, the second circuit 22 and the third circuit 23 respectively.

[0083] The first hollow hole 13 and the back conductive circuit 4 are arranged on the back of the substrate, the back conductive circuit 4 is provided with a through hole 24, and the front conductive circuit 2 and the back conductive circuit 4 are interconnected through the through hole 24.

[0084] The back of the substrate is further provided with an insulating double-sided adhesive tape 43, an electrode patch 42 and a conductive adhesive tape 44, the electrode patch 42 is tightly attached to the substrate through the insulating double-sided adhesive tape 43, completely covers the position of the first hollow hole 13, is provided with a second hollow hole at the position corresponding to the first hollow hole 13, has a concentric shape with the first hollow hole 13 and has a size corresponding to the size of the first hollow hole 13.

[0085] The front conductive circuit 2, the electrode pin and the first electrode layer 11 of the electrode detection layer are coated with silver paste, the first electrode layer 11 is modified with carbon paste on the silver paste substrate, and the second electrode layer 12 is modified with silver-silver chloride paste with a thickness greater than 5 mu m.

[0086] The electrode patch 42 selects a copper sheet as a substrate, and a platinum modification layer is modified on the surface of the copper sheet, the overall thickness is 0.01-0.02 mm, the overall radius is 2 mm, the shape can be circular or rectangular, and can be freely set, the area is greater than the area of the first hollow hole 13, and the first hollow hole 13 can be completely covered.

[0087] In order to be used in subsequent aspects, the front conductive circuit 2 on the front of the substrate can be coated with ink, and the periphery of the electrode loading area 1 can be coated with a second layer of ink, only the electrode detection layer and the area where the first hollow hole 13 and the electrode pin are located are exposed, and the thickness of each layer of ink is 10-20 mu m.

[0088] In order to prevent the measured liquid dropped in the electrode loading area 1 from overflowing, a convex dam structure can be further arranged outside the electrode loading area 1, and an ink coating process is adopted, and the height of the dam is 0.8 mm.

[0089] Example 4

[0090] The utility model provides a kind of patch type hollow ion selective electrode, including silicon electrode substrate, electrode size is 12x35mm, and thickness is 0.35mm.

[0091] The front surface of the substrate is provided with a front conductive circuit 2 and an electrode loading area 1, the electrode loading area 1 comprises an electrode detection layer and a first hollow hole 13 penetrating through the substrate, the first hollow hole 13 has a radius of 1 mm, the electrode detection layer comprises a first electrode layer 11 and a second electrode layer 12 which are coplanar and not interconnected, the first hollow hole 13 is arranged adjacent to the first electrode layer 11 and the second electrode layer 12, and the first electrode layer 11 and the second electrode layer 12 are respectively connected with the front conductive circuit 2.

[0092] The front conductive circuit 2 comprises a first circuit 21, a second circuit 22 and a third circuit 23 which are not connected with each other, the first circuit 21 is connected with the first electrode layer 11, the second circuit 22 is connected with the second electrode layer 12, and the third circuit 23 is arranged outside the first hollow hole 13 and is not connected with the first hollow hole 13.

[0093] The third circuit 23 is provided with three through holes 24, the through holes 24 are located on the back conductive circuit 4 of the back surface of the substrate, and the third circuit 23 is interconnected with the through holes 24.

[0094] The front surface of the substrate is also provided with electrode pins, including a first pin 31, a second pin 32 and a third pin 33 which are coplanar and equidistant, and are respectively connected with the first circuit 21, the second circuit 22 and the third circuit 23.

[0095] The back surface of the substrate is provided with the first hollow hole 13 and the back conductive circuit 4 which are coplanar, the back conductive circuit 4 is provided with the through hole 24, and the front conductive circuit 2 is interconnected with the back conductive circuit 4 through the through hole 24.

[0096] The back surface of the substrate is also provided with an insulating double-sided adhesive tape 43, an electrode patch 42 and a conductive adhesive tape 44, the electrode patch 42 is tightly attached to the substrate through the insulating double-sided adhesive tape 43, completely covers the position of the first hollow hole 13, and is provided with a second hollow hole at the position corresponding to the first hollow hole 13, the shape of the second hollow hole is concentric with that of the first hollow hole 13, and the size of the second hollow hole is consistent with that of the first hollow hole 13. The conductive adhesive tape 44 is arranged above the electrode patch 42 to fix the electrode patch 42 to the back surface of the substrate, completely covers the electrode patch 42 and the area where the through hole 24 is located, and is in contact with the back conductive circuit 4.

[0097] The surfaces of the front conductive circuit 2, the electrode pins and the first electrode layer 11 of the electrode detection layer are coated with silver paste, the first electrode layer 11 is decorated with carbon paste on the silver paste substrate, and the second electrode layer 12 is decorated with silver-silver chloride paste with a thickness greater than 5 μm.

[0098] The electrode patch 42 selects a copper sheet as a substrate, and a bismuth film modification layer is modified on the surface of the copper sheet, the overall thickness is 0.01-0.02 mm, the overall radius is 2 mm, the shape can be circular or rectangular, and can also be freely set, and the area is greater than the area of the first hollow hole 13 and can completely cover the first hollow hole 13. The electrode patch adopts a copper bottom, is plated with bright copper after polishing, and then is modified with a bismuth film, and only the side in contact with the substrate layer is processed.

[0099] In order to be used in subsequent aspects, the front surface of the substrate can be coated with ink on the front surface of the front surface conductive circuit 2, and a second layer of ink can be coated on the periphery of the electrode loading area 1, so that only the electrode detection layer and the area where the electrode pins are located are exposed, and the thickness of each layer of ink is 10-20 μm.

[0100] In order to prevent the measured liquid added in the electrode loading area 1 from overflowing, a protruding dam structure can also be arranged outside the electrode loading area 1, and an ink coating process is adopted, and the height of the dam is 0.5 mm.

[0101] Embodiment 5

[0102] The utility model provides a kind of patch type hollow ion selective electrode, including epoxy resin plate electrode substrate, electrode size is 12x35mm, and thickness is 0.35mm.

[0103] Front surface conductive circuit 2 and electrode loading area 1 are arranged on the front surface of the substrate, the electrode loading area 1 includes electrode detection layer and first hollow hole 13 penetrating the substrate, the radius of the first hollow hole 13 is 1 mm, the electrode detection layer includes first electrode layer 11 and second electrode layer 12 arranged in the same plane and not interconnected, and the first hollow hole 13 is arranged adjacent to the first electrode layer 11 and the second electrode layer 12, and the first electrode layer 11 and the second electrode layer 12 are connected with the front surface conductive circuit 2 respectively.

[0104] The front surface conductive circuit 2 includes first circuit 21, second circuit 22 and third circuit 23 which are not connected with each other, the first circuit 21 is connected with the first electrode layer 11, the second circuit 22 is connected with the second electrode layer 12, and the third circuit 23 is arranged outside the first hollow hole 13 and is not connected with the first hollow hole 13.

[0105] Three through holes 24 are arranged on the third circuit 23, the through holes 24 are located on the back surface conductive circuit 4 of the back surface of the substrate, and the third circuit 23 is interconnected with the through holes 24.

[0106] The front surface of the substrate is also provided with electrode pins, including first pin 31, second pin 32 and third pin 33 arranged in the same plane and equidistantly, and connected with the first circuit 21, the second circuit 22 and the third circuit 23 respectively.

[0107] The first hollow hole 13 and the back conductive circuit 4 are arranged on the back surface of the substrate, the back conductive circuit 4 is provided with a through hole 24, and the front conductive circuit 2 and the back conductive circuit 4 are interconnected through the through hole 24.

[0108] The back surface of the substrate is further provided with an insulating double-sided adhesive tape 43, an electrode patch 42 and a conductive adhesive tape 44, the electrode patch 42 is tightly attached to the substrate through the insulating double-sided adhesive tape 43, completely covers the position of the first hollow hole 13, is provided with a second hollow hole at the position corresponding to the first hollow hole 13, and has a concentric shape with the first hollow hole 13 and a size corresponding to that of the first hollow hole 13. The conductive adhesive tape 44 is arranged above the electrode patch 42, fixes the electrode patch 42 to the back surface of the substrate, completely covers the electrode patch 42 and the area where the through hole 24 is located, and is in contact with the back conductive circuit 4.

[0109] The front conductive circuit 2, the electrode pin and the surface of the first electrode layer 11 of the electrode detection layer are coated with silver paste, the first electrode layer 11 is decorated with carbon paste on the silver paste substrate, and the position of the second electrode layer 12 is decorated with silver-silver chloride paste with a thickness greater than 5 mu m.

[0110] The electrode patch 42 is selected from carbon electrode patches, the material can be selected from carbon element related materials including graphene, the shape can be circular or rectangular, and the area of the electrode patch 42 is greater than that of the first hollow hole 13, so that the electrode patch 42 can completely cover the first hollow hole 13.

[0111] In order to facilitate subsequent use, the front conductive circuit 2 on the front surface of the substrate can be coated with ink, and the periphery of the electrode loading area 1 can be coated with a second layer of ink, so that only the area where the electrode detection layer, the first hollow hole 13 and the electrode pin are located is exposed, and the thickness of each layer of ink is 10-20 mu m.

[0112] In order to prevent the measured liquid added in the electrode loading area 1 from overflowing, a protruding dam structure can be arranged outside the electrode loading area 1, and an ink coating process is adopted, and the height of the dam is 0.5 mm.

[0113] Embodiment 6

[0114] The utility model provides a kind of patch type hollow ion selective electrode, including glass plate electrode substrate, electrode size is 12x35mm, and thickness is 0.35mm.

[0115] The front surface of the substrate is provided with a front conductive circuit 2 and an electrode loading area 1, the electrode loading area 1 includes an electrode detection layer and a first hollow hole 13 penetrating through the substrate, the first hollow hole 13 is arranged with a radius of 1 mm, the electrode detection layer includes a first electrode layer 11 and a second electrode layer 12 arranged coplanarly and not interconnected, the first hollow hole 13 is arranged adjacent to the first electrode layer 11 and the second electrode layer 12, and the first electrode layer 11 and the second electrode layer 12 are connected with the front conductive circuit 2 respectively.

[0116] The front conductive circuit 2 includes a first circuit 21, a second circuit 22 and a third circuit 23 which are not connected to each other, the first circuit 21 is connected to the first electrode layer 11, the second circuit 22 is connected to the second electrode layer 12, and the third circuit 23 is arranged outside the first hollow hole 13 and is not in contact with the first hollow hole 13.

[0117] The third circuit 23 is provided with three through holes 24, the through holes 24 are located on the back surface of the substrate and the back conductive circuit 4 at the same time, and the third circuit 23 is interconnected with the back conductive circuit 4 through the through holes 24.

[0118] The front surface of the substrate is also provided with electrode pins, including coplanar equidistant first pin 31, second pin 32 and third pin 33, which are respectively connected to the first circuit 21, the second circuit 22 and the third circuit 23.

[0119] The back surface of the substrate is provided with the first hollow hole 13 and the back conductive circuit 4, the back conductive circuit 4 is provided with the through hole 24, and the front conductive circuit 2 and the back conductive circuit 4 are interconnected through the through hole 24.

[0120] The back surface of the substrate is also provided with insulating double-sided adhesive tape 43, electrode patch 42 and conductive adhesive tape 44, the electrode patch 42 is tightly attached to the substrate through the insulating double-sided adhesive tape 43, completely covers the position of the first hollow hole 13, and is provided with a second hollow hole at the position corresponding to the first hollow hole 13, the shape of the second hollow hole is concentric with the first hollow hole 13, and the size of the second hollow hole is consistent with the size of the first hollow hole 13. The conductive adhesive tape 44 is arranged above the electrode patch 42 to fix the electrode patch 42 on the back surface of the substrate, completely covers the area where the electrode patch 42 and the through hole 24 are located, and is in contact with the back conductive circuit 4.

[0121] The front conductive circuit 2, the electrode pins and the first electrode layer 11 surface of the electrode detection layer are coated with silver paste, the first electrode layer 11 is decorated with carbon paste on the silver paste substrate, and the second electrode layer 12 is decorated with silver-silver chloride paste with a thickness greater than 5 μm.

[0122] The electrode patch 42 selects copper sheet as the substrate, and the surface of the copper sheet is decorated with a chromium film modification layer, the overall thickness is 0.01-0.02 mm, the overall radius is 2 mm, and the shape can be circular or rectangular, which can be freely set, and the area is greater than the area of the first hollow hole 13, which can completely cover it. The electrode patch adopts copper bottom, is plated with bright copper after polishing, and is decorated with chromium film, which can only be single-sided processed on the side in contact with the substrate electrode.

[0123] In order to facilitate subsequent use, the front surface of the substrate can be coated with ink on the front conductive circuit 2, and the periphery of the electrode loading area 1 can be coated with a second layer of ink, only exposing the area where the electrode detection layer, the first hollow hole 13 and the electrode pins are located, and the thickness of each layer of ink is 10-20 μm.

[0124] To prevent the liquid to be measured dropped in the electrode loading area 1 from overflowing, a protruding dam structure can also be arranged outside the electrode loading area 1, and an ink coating process is adopted, and the height of the dam is 0.5 mm.

[0125] Example 7

[0126] The utility model provides a kind of patch type hollow ion selective electrode, including PET plate electrode base, electrode size is 12x35mm, and thickness is 0.35mm.

[0127] Front surface is provided with front surface conductive circuit 2 and electrode loading area 1 in base, and electrode loading area 1 includes electrode detection layer and first hollow hole 13 through base, and the radius of first hollow hole 13 is set as 1mm, and electrode detection layer includes first electrode layer 11 and second electrode layer 12 that are coplanarly arranged and not interconnected, and first electrode layer 11 and second electrode layer 12 are adjacent to each other and are provided with first hollow hole 13, and first electrode layer 11 and second electrode layer 12 are connected with front surface conductive circuit 2 respectively.

[0128] Front surface conductive circuit 2 includes first circuit 21, second circuit 22 and third circuit 23 that are not connected with each other, first circuit 21 is connected with first electrode layer 11, second circuit 22 is connected with second electrode layer 12, and third circuit 23 is arranged outside first hollow hole 13 and is not connected with it.

[0129] Three through holes 24 are arranged on third circuit 23, and through hole 24 is located on back surface conductive circuit 4 of the back surface of base simultaneously, and is interconnected with third circuit 23 by through hole 24.

[0130] Front surface of base is also provided with electrode pin, including first pin 31, second pin 32 and third pin 33 that are coplanar and equidistant, and are connected with first circuit 21, second circuit 22 and third circuit 23 respectively.

[0131] Back surface of base is provided with first hollow hole 13 and back surface conductive circuit 4, and back surface conductive circuit 4 is provided with through hole 24, and front surface conductive circuit 2 and back surface conductive circuit 4 are interconnected by through hole 24.

[0132] The back surface of the substrate is further provided with an insulating double-sided adhesive tape 43, an electrode patch 42 and a conductive adhesive tape 44, the electrode patch 42 is tightly attached to the substrate through the insulating double-sided adhesive tape 43, and completely covers the position of the first hollow hole 13, and a second hollow hole is arranged at the position corresponding to the first hollow hole 13, the shape of the second hollow hole is concentric with the first hollow hole 13, and the size of the second hollow hole is consistent with the size of the first hollow hole 13. The conductive adhesive tape 44 is arranged above the electrode patch 42, and the electrode patch 42 is fixed to the back surface of the substrate, completely covers the area where the electrode patch 42 and the through hole 24 are located, and is in contact with the back surface conductive circuit 4.

[0133] The front surface conductive circuit 2, the electrode pin and the first electrode layer 11 surface of the electrode detection layer are coated with silver paste, the first electrode layer 11 is decorated with carbon paste on the silver paste substrate, and the second electrode layer 12 is decorated with silver-silver chloride paste, and the thickness is greater than 5 μm.

[0134] The electrode patch 42 selects a copper sheet as a substrate, decorates a pure gold layer on the surface of the copper sheet, and further decorates an active enzyme material on the surface of the gold layer, and the overall thickness is 0.01-0.03 mm, the overall radius is 2 mm, the shape can be circular or rectangular, and can be freely set, the area is greater than the area of the first hollow hole 13, and the first hollow hole 13 can be completely covered. It can only be single-sided processed with the side in contact with the electrode.

[0135] In order to be used in subsequent aspects, the front surface conductive circuit 2 part of the substrate can be coated with ink, and the periphery of the electrode loading area 1 can be coated with a second layer of ink, only the area where the electrode detection layer, the first hollow hole 13 and the electrode pin are located are exposed, and the thickness of each layer of ink is 10-20 μm.

[0136] In order to prevent the measured liquid added in the electrode loading area 1 from overflowing, a convex dam structure can also be arranged outside the electrode loading area 1, and an ink coating process is adopted, and the height of the dam is 0.5 mm.

[0137] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0138] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand. The technical details not described in detail in the utility model can be realized by any existing technology in the art. In particular, all technical features not described in detail in the utility model can be realized by any existing technology.

Claims

1. A patch-type hollowed ion-selective electrode, characterized by, The electrode patch (42) is fixedly installed on the back surface of the base electrode and completely covers the position of the first hollow hole (13).

2. The patch-type hollowed ion-selective electrode according to claim 1, wherein The electrode detection layer comprises a first electrode layer (11) and a second electrode layer (12) which are coplanarly arranged and not interconnected, the first electrode layer (11) and the second electrode layer (12) are adjacent to the first hollow hole (13), and the first electrode layer (11) and the second electrode layer (12) are connected with the front surface conductive circuit (2) respectively.

3. The patch-type hollowed ion-selective electrode according to claim 2, wherein The front surface conductive circuit (2) comprises a first circuit (21), a second circuit (22) and a third circuit (23) which are not connected with each other, the first circuit (21) is connected with the first electrode layer (11), the second circuit (22) is connected with the second electrode layer (12), and the third circuit (23) is not directly connected with the hollow hole (13), and one or more through holes (24) are arranged on the third circuit (23).

4. The patch-type hollowed ion-selective electrode according to claim 3, wherein The base front surface is further provided with electrode pins, including a first pin (31), a second pin (32) and a third pin (33), and is connected with the first circuit (21), the second circuit (22) and the third circuit (23) respectively.

5. The patch-type hollowed ion-selective electrode according to claim 1, wherein The back surface of the base electrode is provided with a back surface conductive circuit (4), the area where the back surface conductive circuit (4) is located is provided with the through hole (24), and the front surface conductive circuit (2) and the back surface conductive circuit (4) are interconnected through the through hole (24).

6. The patch-type hollowed ion-selective electrode according to claim 1, wherein The back surface of the base electrode is further provided with a patch electrode fixing area (41), the patch electrode fixing area (41) is arranged outside the position of the first hollow hole (13), the patch electrode fixing area (41) can be installed with insulating double-sided adhesive tape (43), and the electrode patch (42) is tightly attached to the back surface of the base electrode through the insulating double-sided adhesive tape (43).

7. The patch-type hollowed ion-selective electrode according to claim 6, wherein The insulating double-sided adhesive tape is provided with a second hollow hole at the position corresponding to the first hollow hole (13), and the second hollow hole is completely consistent with the first hollow hole (13) in shape and size.

8. The patch-type hollowed ion-selective electrode according to claim 5, wherein The patch type hollow ion selective electrode further comprises a conductive adhesive tape (44), the conductive adhesive tape (44) fixes the electrode patch (42) on the back surface of the base, one end is pasted on the back surface of the electrode patch (42), the other end is pasted on the back surface of the base electrode, and is in contact with the back surface conductive circuit (4) and is in contact with the through hole (24).

9. The patch-type hollowed ion-selective electrode according to claim 1, wherein The front conductive circuit (2), the electrode pin, the electrode detection layer and the back conductive circuit (4) surface modification metal layer as the base metal.

10. The patch-type hollowed ion-selective electrode according to claim 1, wherein The first electrode layer (11) surface of the electrode detection layer is further provided with a modification layer; and the second electrode layer (12) surface of the electrode detection layer is provided with a modification layer.

11. The patch-type hollowed ion-selective electrode according to claim 1, wherein The electrode patch (42) base material includes metal.

12. The patch-type hollowed ion-selective electrode according to claim 11, wherein The electrode patch (42) and the base electrode back surface contact side can be modified with an ion selective modification layer.

13. The patch-type hollowed ion-selective electrode according to claim 1, wherein The dam (14) height is 0.2-0.8mm.

14. The patch-type hollowed ion-selective electrode according to claim 1, wherein The first hollow hole (13) shape category includes a circle and a rectangle.

Images