Stereo Sensor Analyte Detection Device

Abstract

The present invention discloses a three-dimensional sensor analyte detection device. At least two groups of electrodes are arranged at the detection end of the sensor. The electrodes are connected to pins through wires. Each group of pins, wires, and electrodes are respectively arranged on two sides of an insulating substrate. The pins located on the first side of the substrate are electrically connected to an elastic conductor through an external circuit, and the pins located on the second side of the substrate are directly electrically connected to the elastic conductor. At the same time, the elastic conductor is electrically connected to the electrical connection area of the transmitter, so as to realize the electrical connection between the double-sided pins of the sensor and the transmitter. The circuit structure is simple. By arranging multiple groups of electrodes on both sides of the sensor substrate, the service life of the sensor can be extended and the detection reliability of the sensor can be improved through the way of electrode relay or redundant use.

Description

[0001] Cross - reference to related applications

[0002] This application claims the benefit of and priority to the following patent applications: PCT patent application filed on May 31, 2021, with application number PCT / CN2021 / 097173; and PCT patent application filed on July 8, 2021, with application number PCT / CN2021 / 105108. Technical field

[0003] The present invention mainly relates to the field of medical devices, and particularly to a three - dimensional sensor analyte detection device. Background art

[0004] The pancreas in a normal person's body can automatically monitor the glucose content in human blood and secrete the required insulin / glucagon automatically. However, the function of the pancreas in diabetic patients is abnormal and cannot secrete the insulin required by the human body normally. Therefore, diabetes is a metabolic disease caused by abnormal pancreatic function in the human body, and diabetes is a lifelong disease. At present, medical technology has not been able to cure diabetes completely, and can only control the occurrence and development of diabetes and its complications by stabilizing blood sugar.

[0005] Before injecting insulin into the body, diabetic patients need to measure their blood sugar. At present, most detection methods can continuously detect blood sugar and send the blood sugar data to a remote device in real time for the user to view. This detection method is called Continuous Glucose Monitoring (CGM). This method requires the detection device to be attached to the skin surface, and the probe it carries is inserted into the interstitial fluid under the skin to complete the detection.

[0006] The sensor of the existing analyte detection device is a single - sided electrode, and the activity of the enzyme on the sensor has a time limit. Therefore, the service life of the CGM device is often limited by the service life of the sensor. Generally speaking, the service life of the sensor is 1 - 14 days. After exceeding the service life, the activity of the enzyme decreases, and the reliability of the measured analyte parameter data will also decrease accordingly. Therefore, after using for a certain period of time, the user needs to replace the new sensor, which causes inconvenience in use and also increases the user's usage cost.

[0007] Therefore, there is an urgent need in the prior art for an analyte detection device with a longer service life and higher reliability. Summary of the invention

[0008] An embodiment of the present invention discloses a three-dimensional sensor analyte detection device. At least two groups of electrodes are arranged at the detection end of the sensor. The electrodes are connected to pins through wires. Each group of pins, wires, and electrodes are respectively arranged on two sides of an insulating substrate. The pins located on the first side of the substrate are electrically connected to an elastic conductor through an external circuit, and the pins located on the second side of the substrate are directly electrically connected to the elastic conductor. At the same time, the elastic conductor is electrically connected to the electrical connection area of the transmitter, thereby realizing the electrical connection between the double-sided pins of the sensor and the transmitter. The circuit structure is simple. By arranging multiple groups of electrodes on both sides of the sensor substrate, the service life of the sensor can be extended and the detection reliability of the sensor can be improved through the electrode relay or redundant use method.

[0009] The present invention discloses an analyte detection device, including: a transmitter, with an electrical connection area arranged on the transmitter; a bottom case, with a sensor base arranged on the bottom case; a sensor, the sensor includes a signal output end and a detection end, the signal output end is provided with pins, the detection end is provided with at least two groups of electrodes, the pins and the electrodes are connected through wires, and each group of pins, wires, and electrodes are arranged on two sides of an insulating substrate; an elastic conductor, the elastic conductor includes spaced conductive areas and insulating areas, and the conductive areas are electrically connected to the electrical connection area; and an external circuit, the pins located on the first side of the substrate and the elastic conductor are electrically connected through the external circuit, and the pins located on the second side of the substrate are directly electrically connected to the elastic conductor.

[0010] According to one aspect of the present invention, the pins located on the first side of the substrate and the pins located on the second side of the substrate are arranged staggered.

[0011] According to one aspect of the present invention, the elastic conductor is in a cuboid structure.

[0012] According to one aspect of the present invention, the first side of the elastic conductor contacts the pins located on the second side of the substrate, the first end of the external circuit contacts the pins located on the first side of the substrate, the second side of the elastic conductor contacts the second end of the external circuit, and the third side of the elastic conductor contacts the electrical connection area.

[0013] According to one aspect of the present invention, the first end of the external circuit contacts the pins located on the first side of the substrate, the first side of the elastic conductor contacts the pins located on the second side of the substrate and the second end of the external circuit, and the third side of the elastic conductor contacts the electrical connection area.

[0014] According to one aspect of the present invention, the external circuit is a three-dimensional circuit laid on the sensor base.

[0015] According to one aspect of the present invention, the external circuit is one of conductive gel, conductive paste, conductive paint, conductive tape, or conductive glue applied on the sensor base.

[0016] According to one aspect of the present invention, the first side and the third side of the elastic conductor are opposite to each other.

[0017] According to one aspect of the present invention, the conductive regions and the insulating regions respectively penetrate the elastic conductor in the longitudinal direction.

[0018] According to one aspect of the present invention, the conductive regions and the insulating regions surround the surface of the elastic conductor.

[0019] According to one aspect of the present invention, the conductive regions are spaced-apart elastic conductors, and the insulating regions are spaced air regions of the conductive regions.

[0020] According to one aspect of the present invention, the elastic conductor is one of a conductive rubber strip, a conductive foam, or a conductive foam.

[0021] According to one aspect of the present invention, the signal output end is bent relative to the detection end, and the signal output end is laid flat on the sensor base.

[0022] According to one aspect of the present invention, the electrical connection region is a metal conductive contact.

[0023] According to one aspect of the present invention, the number of metal conductive contacts is the same as the number of pins.

[0024] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0025] In the three-dimensional sensor analyte detection device disclosed by the present invention, at least two groups of electrodes are arranged at the detection end of the sensor. The electrodes are connected to the pins through wires. Each group of pins, wires, and electrodes are respectively arranged on two sides of the insulating substrate. The pins located on the first side of the substrate are electrically connected to the elastic conductor through an external circuit, and the pins located on the second side of the substrate are directly electrically connected to the elastic conductor. At the same time, the elastic conductor is electrically connected to the electrical connection region of the transmitter, so as to realize the electrical connection between the double-sided pins of the sensor and the transmitter, and the circuit structure is simple.

[0026] Further, multiple groups of electrodes are arranged on both sides of the sensor. The service life of the sensor can be extended and the detection reliability of the sensor can be improved by means of electrode relay or redundant use.

[0027] Further, the elastic conductor has a cuboid structure, which is convenient for stable placement and fixation on the sensor base, avoiding loosening and improving the reliability of the analyte detection device.

[0028] Further, the first surface of the elastic conductor contacts the pins located on the second side of the substrate, that is, the elastic conductor is placed on the signal output end, saving the installation space of the elastic conductor and facilitating the integrated design of the analyte detection device.

[0029] Furthermore, the second surface of the elastic conductor contacts the second end of the external circuit, and the third surface contacts the electrical connection area of the emitter, making full use of the structural characteristics of the cuboid elastic conductor, with a simple circuit structure and improved reliability of the analyte detection device.

[0030] Furthermore, the external circuit is a three-dimensional circuit laid on the sensor base, and the three-dimensional circuit can be laid along the frame structure of the base without occupying additional space, with a simple circuit structure, which is conducive to the integrated design of the analyte detection device.

[0031] Furthermore, the signal output end is bent relative to the detection end, and the signal output end is laid flat on the sensor base, which can reduce the installation height of the sensor, thereby reducing the overall thickness of the analyte detection device and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. is a schematic three-dimensional structure diagram of the bottom shell according to an embodiment of the present invention;

[0033] Figure 2a FIG. is an assembly schematic diagram of the sensor properly installed on the base according to an embodiment of the present invention;

[0034] Figure 2b FIG. is a schematic structure diagram of a single-sided electrode sensor according to an embodiment of the present invention;

[0035] Figure 3 FIG. is a schematic three-dimensional structure diagram of an emitter according to an embodiment of the present invention;

[0036] Figures 4a - 4b FIG. is a schematic structure diagram of an elastic conductor, pins, and electrical connection area according to an embodiment of the present invention, Figure 4a is a top view, Figure 4b is Figure 4a a side view of the structure;

[0037] Figure 4c FIG. is a top view schematic structure diagram of an elastic conductor, pins according to another embodiment of the present invention;

[0038] Figures 4d - 4e FIG. is a top view schematic structure diagram of an elastic conductor, pins, and electrical connection area according to different embodiments of the present invention;

[0039] Figure 5 FIG. is a schematic structure diagram of an elastic conductor, pins, and electrical connection area according to another embodiment of the present invention;

[0040] Figures 6a - 6b FIG. is a schematic structure diagram of the electrical connection position between the electrical connection area and the elastic conductor according to different embodiments of the present invention;

[0041] Figures 7a - 7bSchematic diagram of the structure in which the elastic conductor is electrically connected to the pin and the electrical connection region respectively according to another embodiment of the present invention. Figure 7b Along Figure 7a The cross-sectional view obtained by the sectional line A-A' in

[0042] Figures 8a - 8b Schematic diagram of the structure in which the elastic conductor is electrically connected to the pin and the electrical connection region respectively according to another embodiment of the present invention. Figure 8b Along Figure 8a The cross-sectional view obtained by the sectional line B-B' in

[0043] Figure 9a Schematic diagram of the three-dimensional structure of the electrical connection region according to another embodiment of the present invention.

[0044] Figure 9b And Figure 9a Schematic diagram of the three-dimensional structure of the elastic conductor and the signal output end that cooperate with the electrical connection region in

[0045] Figure 10 Schematic diagram of the structure in which the signal output end is arranged on the top of the elastic conductor according to another embodiment of the present invention.

[0046] Figure 11 Schematic diagram of the structure in which the signal output ends of different parts are arranged at different positions of the elastic conductor according to another embodiment of the present invention.

[0047] Figure 12a Schematic diagram of the detection end bending when the sensor is mounted upright on the base according to the embodiment of the present invention.

[0048] Figure 12b Schematic diagram of the detection end when the sensor is mounted upside down on the base according to the embodiment of the present invention.

[0049] Figure 13 Assembly schematic diagram of the sensor mounted upside down on the base according to the embodiment of the present invention.

[0050] Figure 14 Schematic diagram of the three-dimensional sensor structure according to the embodiment of the present invention.

[0051] Figure 15 Schematic diagram of the three-dimensional sensor mounted on the base according to the embodiment of the present invention. Detailed implementation manners

[0052] As described above, the service life of the analyte detection device in the prior art is limited by the sensor life. After exceeding the service life of the sensor, the reliability of the analyte detection device decreases. Therefore, after using for a certain period of time, the user needs to replace a new sensor, which causes inconvenience in use and also increases the user's usage cost.

[0053] To solve this problem, the present invention provides a three-dimensional sensor analyte detection device. At least two groups of electrodes are arranged at the detection end of the sensor. Each electrode is connected to a pin through a wire. Each group of pins, wires, and electrodes are respectively arranged on two sides of an insulating substrate. The pins located on the first side of the substrate are electrically connected to an elastic conductor through an external circuit, and the pins located on the second side of the substrate are directly electrically connected to the elastic conductor. At the same time, the elastic conductor is electrically connected to the electrical connection area of the transmitter, thereby realizing the electrical connection between the double-sided pins of the sensor and the transmitter. The circuit structure is simple. By arranging multiple groups of electrodes on both sides of the sensor substrate, the service life of the sensor can be extended and the detection reliability of the sensor can be improved through the electrode relay or redundant use method.

[0054] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments should not be construed as limiting the scope of the present invention.

[0055] In addition, it should be understood that for the sake of convenience of description, the sizes of the various components shown in the drawings are not necessarily drawn in actual proportional relationships. For example, the thickness, width, length, or distance of certain units may be enlarged relative to other structures.

[0056] The following description of the exemplary embodiments is merely illustrative and in no sense limits the present invention and its application or use. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail herein, but when applicable, these technologies, methods, and devices should be regarded as part of this specification.

[0057] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined or illustrated in one drawing, it will not require further discussion in the subsequent drawing descriptions.

[0058] Figure 1 It is a three-dimensional structure schematic diagram of the bottom shell 10 of the embodiment of the present invention. Figure 2a It is an assembly schematic diagram of the sensor 113 of the embodiment of the present invention being mounted upright on the base 111. Referring jointly to Figure 1 and Figure 2a , a detailed description will be given.

[0059] The bottom shell 10 is used to assemble the sensor 113 and the transmitter 12. In the embodiment of the present invention, an assembly hole 101 for assisting in the installation of the sensor 113 is provided on the bottom surface of the bottom shell 10, and a first engaging structure 102 is provided around the assembly hole 101 to assist in installing the sensor 113 on the bottom shell 10. Referring jointly to Figure 2a and Figure 3, a second engaging portion 104 for fixing the transmitter 12 is further provided on the side wall of the bottom case 10. Correspondingly, the transmitter 12 is provided with a first engaging portion 123 that can be engaged with the second engaging portion 104.

[0060] In the embodiment of the present invention, the number of the second engaging portions 104 is two, and the two second engaging portions 104 are correspondingly arranged on the side wall of the bottom case 10.

[0061] In other embodiments of the present invention, the number of the second engaging portions 104 is four, and the four second engaging portions 104 are correspondingly arranged on the opposite side walls of the bottom case 10, with two on each side.

[0062] In other embodiments of the present invention, the number of the second engaging portions 104 is six, and the six second engaging portions 104 are correspondingly arranged on the side wall of the bottom case 10, with two on each side.

[0063] In the embodiment of the present invention, bending the force-applying portion can render the bottom case ineffective. The ways in which the bottom case becomes ineffective include one or a combination of multiple ones among the fracture of the bottom plate of the bottom case 10, the damage of the bottom case, the fracture of the second engaging portion, and the deformation of the bottom case. In short, after the bottom case fails, the first engaging portion 123 is disengaged from the second engaging portion 104, and the transmitter 12 can be detached from the bottom case 10. Due to the electrical connection components, the electrical connection area 122 of the transmitter 12 is not located at the force-applying portion, so that the user will not damage the electrical connection components when detaching the transmitter 12. After replacing the bottom case 10, the transmitter 12 is reinstalled on the new bottom case, which does not affect the electrical connection between the electrical connection area 122 and the pins 116 of the new bottom case, ensuring the stability of the electrical connection.

[0064] In the embodiment of the present invention, the fixing portion and the force-applying portion are relative concepts. According to the structural design of the bottom case 10 and the transmitter 12, different choices can be made for the positions of the fixing portion and the force-applying portion.

[0065] In other embodiments of the present invention, the connection line l of the two second engaging portions 104 divides the bottom case 10 into an X side and a Y side. The force-applying portion is provided on the Y side, and the fixing portion is provided on the X side.

[0066] Therefore, in the embodiment of the present invention, the process of separating the bottom case 10 and the transmitter 12 is as follows: Fix the fixing portion on the X side with a finger, and apply a force F to the force-applying portion on the Y side in one direction with another finger to render the second engaging portion 104 ineffective, and then disengage the second engaging portion 104 from the first engaging portion 123 to separate the transmitter 12 from the bottom case 10.

[0067] In the embodiment of the present invention, the force-applying portion is a protrusion 103 protruding outward from the side of the bottom case. The shape, size, and number of the protrusion 103 are not limited. Preferably, the protrusion 103 is in a semi-circular arc shape, which is convenient for the user to press with a finger and saves space, ensuring a smaller and more compact bottom case structure.

[0068] In other embodiments of the present invention, the bottom case 10 can also be of other shapes, as long as the conditions for mounting the transmitter 12 and the sensor 113 on the bottom case 10 can be met, and no specific limitations are imposed here.

[0069] There are various ways to assemble the sensor 113 on the bottom case 10, and no specific limitations are imposed here. Specifically, in the embodiment of the present invention, the bottom case 10 includes a sensor base 111. The sensor 113 is mounted on the bottom case 10 through the sensor base 111. The second engaging structure 112 is provided around the sensor base 111, and the second engaging structure 112 will engage with the first engaging structure 102 to mount the sensor base 111 in the assembly hole 101, and further assemble the sensor 113 on the bottom case 10.

[0070] In another embodiment of the present invention, after the sensor 113 is mounted on the bottom case 10, the auxiliary mounting structure of the sensor 113 is removed, and the sensor 113 is not carried by the sensor base 111 or other components, but is separately mounted on the bottom case 10.

[0071] In other embodiments of the present invention, the sensor 113 can also be assembled on the bottom case 10 in other assembly manners, and no specific limitations are imposed here.

[0072] It should be noted that in the embodiment of the present invention, a sealing ring 130 and a groove 131 for placing the sealing ring 130 are also provided on the sensor base 111.

[0073] Figure 2b Schematic diagram of a single-sided electrode sensor structure. Please refer to Figure 2a 、 Figure 2b , the sensor 113 includes a signal output end 113a and a detection end 113b. The signal output end 113a needs to be electrically connected to the electrical connection area 122 of the transmitter 12 to transmit the detection signal to the transmitter 12. The detection end 113b is used to pierce into the subcutaneous tissue of the human body to detect the parameter information of the body fluid analyte.

[0074] The signal output end 113a is provided with mutually insulated pins 116. Conventionally, electrodes and / or electrode wires for detecting analyte parameter information are also provided on the sensor 113. The detection signal of the electrodes needs to be led out through the pins 116.

[0075] It should be noted that the embodiment of the present invention does not limit the setting manner of the pins 116 on the signal output end 113a. For example, the pins 116 can be provided on the surface of the signal output end 113a or embedded in the signal output end 113a.

[0076] Generally, at least two detection electrodes are provided on the sensor 113, that is, at least including a working electrode and a counter electrode. Therefore, in the implementation of the present invention, at least two pins 116 are provided on the surface of the signal output terminal 113a to be electrically connected to different electrodes. Specifically, in the embodiment of the present invention, the sensor 113 is a three-electrode system, that is, a working electrode, a counter electrode, and a reference electrode. Therefore, the number of pins 116 is three.

[0077] As Figure 2a shown, in the embodiment of the present invention, the signal output terminal 113a bends or folds towards the bottom surface of the bottom case 10. The signal output terminal 113a fits on the surface of the sensor base 111 or is embedded in the sensor base 111. Such a design reduces the height of the sensor 113 protruding from the bottom case 10 and reduces the thickness dimension of the detection device.

[0078] In other embodiments of the present invention, the sensor 113 may also be of other shapes or forms (such as non-folded), which are not specifically limited here.

[0079] Figure 3 It is a schematic three-dimensional structure diagram of the transmitter 12 in the embodiment of the present invention.

[0080] The transmitter 12 is provided with electrically insulated electrical connection areas 122. The electrical connection areas 122 are used to be electrically connected to the pins 116, and thus receive electrical signals from the sensor 113. Therefore, the electrical connection areas 122 correspond to the pins 116.

[0081] Here, corresponding means that the number of the two is equal and the positions of the two basically correspond. Obviously, in the embodiment of the present invention, the number of the electrical connection areas 122 is three to adapt to the three-electrode system of the sensor 113.

[0082] In the embodiment of the present invention, the electrical connection areas 122 are exposed and protrude from the transmitter housing 121. Specifically, in the embodiment of the present invention, the electrical connection areas 122 are metal conductive contacts. Preferably, the metal conductive contacts with a smaller volume can make the internal structure of the detection device more compact, and the volume of the detection device will be further reduced.

[0083] In the embodiment of the present invention, a battery (not shown in the figure) is provided in the transmitter housing 121. In other embodiments, the battery may also be provided in the bottom case 10 to supply electrical energy to the transmitter 12.

[0084] It should be noted that the embodiments of the present invention do not limit the shape and position of the electrical connection area 122. For example, in one embodiment of the present invention, the electrical connection area 122 does not protrude from the surface of the emitter housing 121, but is flush with the surface of the emitter housing 121. In another embodiment of the present invention, the electrical connection area 122 is located inside the emitter housing 121, which will be described in detail below. For example, in yet another embodiment of the present invention, the cross-section of the electrical connection area is rectangular or circular. In still another embodiment of the present invention, the conductive part of the electrical connection area is disposed on the surface of the plug-in member, or the electrical connection area 122 itself is the plug-in member. The plug-in member can be inserted into the same elastic conductor, which will be described in detail below.

[0085] Figure 4a It is a top view structural schematic diagram of an elastic conductor, a pin, and an electrical connection area according to an embodiment of the present invention. Figure 4b is Figure 4a a side view of the elastic conductor in Figure 4c It is a top view structural schematic diagram of an elastic conductor and a pin according to another embodiment of the present invention. Figures 4d - 4e It is a top view structural schematic diagram of an elastic conductor, a pin, and an electrical connection area according to different embodiments of the present invention.

[0086] First of all, it should be pointed out that Figure 4a In, the thin dashed line represents the contour of the part of the pin covered by the elastic conductor, and the thick dashed line represents the contour of the part of the signal output end covered by the elastic conductor. The thin dashed line and the thick dashed line in the subsequent drawings have the same meaning as here, and will not be repeated below.

[0087] The detection device according to the embodiment of the present invention includes an elastic conductor 114. The elastic conductor 114 is in contact with the signal output end 113a. Only providing one elastic conductor 114 reduces the number of internal structures of the detection device. In addition, the elastic material deforms after being squeezed, thereby playing a locking role. Therefore, the elastic conductor 114 can be more tightly connected to each other whether it is used as a conductive structure or as an auxiliary structure for the electrical connection position, thereby improving the reliability of the electrical connection.

[0088] In one embodiment of the present invention, the signal output end 113a is disposed at the bottom (the first surface) of the elastic conductor 114, and the pin 116 is indirectly electrically connected to the corresponding electrical connection area 122. Here, the bottom of the elastic conductor 114 refers to the part of the elastic conductor 114 close to the skin.

[0089] At this time, the elastic conductor 114 includes at least two conductive areas 114a and at least one insulating area 114b. The conductive area 114a and the insulating area 114b respectively play the roles of electrical conduction and electrical insulation. The conductive area 114a and the insulating area 114b cannot be separated from each other, that is, the conductive area 114a and the insulating area 114b respectively belong to an integral part of the elastic conductor 114.

[0090] An insulating region 114b is provided between adjacent conductive regions 114a. Different pins 116 or different electrical connection regions 122 are electrically connected to different conductive regions 114a respectively, so that any two pins 116 or any two electrical connection regions 122 are electrically insulated from each other.

[0091] Inside the elastic conductor 114, the conductive regions 114a and the insulating region 114b penetrate the elastic conductor 114 in the longitudinal direction, as Figure 4b shown. Here, the longitudinal direction refers to the direction from the pin 116 to the corresponding electrical connection region 122, or the direction of the current between the pin 116 and the electrical connection region 122. After the pin 116 is electrically connected to the electrical connection region 122, such a design ensures that the elastic conductor 114 can only conduct electricity longitudinally and cannot conduct electricity laterally. While the elastic conductor 114 electrically connects the pin 116 and the corresponding electrical connection region 122, it also electrically insulates different pins 116 or different electrical connection regions 122 from each other. An elastic conductor 114 simultaneously functions as electrical conduction and electrical insulation, reducing the complexity of the internal structure of the detection device, making the internal structure more compact, and improving the electrical connection reliability of the detection device.

[0092] It should be noted that in other embodiments of the present invention, the conductive region 114a or the insulating region 114b may also have a certain inclination, or be arranged in the elastic conductor 114 in other directions or manners, which are not specifically limited here as long as the above conditions of electrical conduction and electrical insulation can be satisfied.

[0093] Please refer to Figure 2a 、 Figure 4a and Figure 4b specifically, in the embodiment of the present invention, the elastic conductor 114 has a cuboid structure. The conductive regions 114a and the insulating region 114b are arranged at intervals and penetrate the elastic conductor 114 respectively. In another embodiment of the present invention, different conductive regions 114a are arranged in the same insulating region 114b, that is, surrounded by the same insulating region 114b, as Figure 4d shown. In still another embodiment of the present invention, the top view of the elastic conductor 114 can be an annular shape, as Figure 4e shown. In yet another embodiment of the present invention, the top view of the elastic conductor 114 can also be a circular shape.

[0094] In other embodiments of the present invention, the elastic conductor 114 may also have other shapes, which are not specifically limited here as long as the conditions for realizing the above functions of the elastic conductor 114 can be satisfied.

[0095] Please continue to refer to Figure 4a and Figure 4b, after the elastic conductor 114 is electrically connected to the pin 116 and the electrical connection area 122 respectively, an insulating area 114b is spaced between any two pins 116 connected to the elastic conductor 114. Specifically, in the embodiment of the present invention, the insulating area 114b spaced between any two pins 116 includes a part of an insulating area 114b (such as Figure 4a and Figure 4b between 116a and 116b), or an insulating area 114b, or more than one insulating area 114b (such as Figure 4a and Figure 4b between 116c and 116b). Similarly, the insulating area 114b spaced between any two electrical connection areas 122 connected to the elastic conductor 114 includes a part of an insulating area 114b, or an insulating area 114b, or more than one insulating area 114b. However, obviously, the common part of the conductive area 114a is shared between the pin and the corresponding electrical connection area (such as between 116a and 122a, between 116b and 122b, or between 116c and 122c) to achieve electrical conduction between the two. The conductive area of the common part includes a part of a conductive area 114a (such as Figure 4a and Figure 4b between 116c and 122c in

[0096] Combined with Figure 4a and Figure 4b , it is easy for those skilled in the art to understand that the part of an insulating area or conductive area, an insulating area or conductive area, and more than one insulating area or conductive area mentioned above are only the span ranges of the pins or electrical connection areas in one-dimensional direction (such as the arrangement direction of the conductive area).

[0097] In other embodiments of the present invention, the part of an insulating area or conductive area, an insulating area or conductive area, and more than one insulating area or conductive area can also represent the coverage range of the pins or electrical connection areas on the insulating area or conductive area in two-dimensional direction (in terms of area), as shown in Figure 4c . Taking the pin as an example, Figure 4c the dotted line in

[0098] represents a partial contour of the pin. Obviously, the pin 116 can cover a part of an insulating area or conductive area, or an insulating area or conductive area, or more than one insulating area or conductive area. Obviously, when the number of conductive areas or insulating areas between the above structures is large or the range is wide, the reliability of electrical connection or electrical insulation between the structures will be significantly improved.

[0099] In the embodiments of the present invention, the material of the elastic conductor 114 includes elastic plastics, elastic rubbers, etc. Using the elastic conductor 114 can obtain better electrical contact and at the same time play a buffering role. When the material of the elastic conductor 114 is elastic rubber, the elastic conductor 114 is an elastic conductor. An elastic conductor simultaneously plays the roles of conducting electricity and insulating, and also plays a buffering role.

[0100] Obviously, when the sensor 113 is a two-electrode system, the number of pins and electrical connection areas is 2 each. At this time, the elastic conductor 114 only needs to include two conductive areas 114a and an insulating area 114b arranged between the two conductive areas 114a. That is, two pairs of different pins and electrical connection areas are electrically connected through different conductive areas 114a respectively to achieve electrical conduction. At the same time, the two pins or two electrical connection areas are separated by the insulating area to achieve electrical insulation.

[0101] The sensors in other embodiments of the present invention may also include more electrodes. Therefore, the elastic conductor 114 includes more conductive areas and insulating areas arranged at intervals, and the electrical connection method will be more flexible, as Figure 5 shown.

[0102] It should be noted that in other embodiments of the present invention, the sensor includes at least 3 electrodes, that is, the signal output terminal 113a is provided with at least 3 pins, and at least two of the pins are electrically connected to the corresponding electrical connection areas through different conductive areas 114a. The connection method and principle are the same as those above. For other pins and electrical connection areas not connected to the elastic conductor 114, the embodiments of the present invention do not limit their connection methods or connection principles. For example, in an embodiment of the present invention, the sensor is a three-electrode system, in which only the working electrode and the counter electrode are electrically connected to the electrical connection areas through the above-mentioned elastic conductor by the corresponding pins, and the reference electrode is electrically connected to the transmitter in other ways.

[0103] Figures 6a - 6b It is a schematic structural diagram of the electrical connection positions of the electrical connection area 122 and the elastic conductor 114 in different embodiments of the present invention.

[0104] For the convenience of marking and description, Figure 6a and Figure 6b the electrical connection area 122 and the elastic conductor 114 in

[0105] will be separately shown. Figure 6aAs shown, in the embodiment of the present invention, the electrical connection region 122 is a convex spherical crown-shaped metal conductive contact. Correspondingly, the elastic conductive body 114 is provided with a recess (not shown) at the position where it is connected to the convex metal conductive contact, making the connection tighter. At the same time, the connection between the convex part and the concave part also serves to fix the position of the elastic conductive body 114, that is, regardless of the external force applied to the detection device, the position of the elastic conductive body 114 remains fixed and does not shift, ensuring that the elastic conductive body 114 performs normal conductive and insulating functions.

[0106] It should be noted that the elastic conductive body 114 may not be designed with a recess. When pressed by the convex metal conductive contact, a recess that matches the metal conductive contact will automatically appear on the elastic conductive body 114 to ensure the realization of the electrical connection or electrical insulation function.

[0107] As Figure 6b shown, in another embodiment of the present invention, the electrical connection region 122 is disposed inside the transmitter 12. At this time, the elastic conductive body 114 is correspondingly provided with a convex part (not shown), and the convex part can enter the inside of the transmitter 12 and be electrically connected to the corresponding electrical connection region 122.

[0108] Figures 7a - 7b Schematic diagram of the structure in which the elastic conductive body 214 of another embodiment of the present invention is electrically connected to the pin and the electrical connection region respectively. Figure 7a It is a top view. Figure 7b It is along Figure 7a The cross-sectional view obtained by the section line A-A' in

[0109] In the embodiment of the present invention, the three electrical connection regions 222a, 222b, and 222c are indirectly electrically connected to the three pins 216a, 216b, and 216c respectively. For the arrangement of the conductive region 214a and the insulating region 214b in the elastic conductive body 214, please refer to the foregoing description.

[0110] Specifically, please refer to Figure 7b , in the embodiment of the present invention, the signal output terminal 213a is embedded inside the elastic conductive body 214. Therefore, the three pins 216a, 216b, and 216c are all embedded inside the elastic conductive body 214. To fix the position of the sensor, the signal output terminal 213a and the detection terminal 231b are carried by the sensor base 211.

[0111] The principle and method of the electrical connection between the elastic conductive body 214 of the embodiment of the present invention and the pin and the electrical connection region respectively are the same as those described above.

[0112] Figures 8a - 8b Schematic diagram of the structure in which the elastic conductive body of still another embodiment of the present invention is electrically connected to the pin and the electrical connection region respectively. Figure 8a It is a top view. Figure 8b It is alongFigure 8a Cross-sectional view obtained from the middle section line B-B'.

[0113] In the embodiment of the present invention, different pins are arranged on different parts of the signal output terminal 313a. Different parts of the signal output terminal 313a are independent of each other and do not interfere with each other. Specifically, the 3 pins are all embedded in the conductive region 314a and / or the insulating region 314b of the elastic conductor. As Figure 8b shown, in the embodiment of the present invention, the heights of the embedding positions of the 3 pins in the elastic conductor are not exactly equal.

[0114] In the actual manufacturing process, there will be differences in the thickness of each pin. When the transmitter is connected to the sensor, these independent and non-interfering pins can weaken or eliminate the influence of poor contact caused by the above-mentioned thickness differences, improving the reliability of the electrical connection among the three.

[0115] Obviously, in other embodiments of the present invention, only two of the 3 pins can be embedded in the elastic conductor, and the other pin is arranged at the bottom of the elastic conductor, or the heights of the 3 pins embedded in the elastic conductor are equal, which is not specifically limited here.

[0116] Figure 9a Schematic three-dimensional structure diagram of the electrical connection area 422 in another embodiment of the present invention. Figure 9b For Figure 9a Schematic three-dimensional structure diagram of the elastic conductor and the signal output terminal 413a that cooperate with the electrical connection area 422 in

[0117] The 3 electrical connection areas 422a, 422b, and 422c are plug-in parts and protrude from the transmitter housing 412. The types of the plug-in parts are as described above. 3 jacks 401 are provided in the elastic conductor to cooperate with the 3 electrical connection areas. The 3 electrical connection areas can be respectively inserted into the corresponding jacks 401.

[0118] In the embodiment of the present invention, the length direction of the jack 401 is perpendicular to the arrangement direction of the conductive region 414a or the insulating region 414b. In other embodiments of the present invention, the two directions can be designed arbitrarily according to requirements. For example, in an embodiment of the present invention, the length direction of the jack is parallel to the arrangement direction of the conductive region. The principle and method of its electrical connection can be referred to the foregoing description.

[0119] Figure 10 Schematic structure diagram of the signal output terminal arranged on the top of the elastic conductor 514 in another embodiment of the present invention.

[0120] In yet another embodiment of the present invention, the signal output end is disposed at the top of the elastic conductor 514, that is, the signal output end is disposed between the elastic conductor 514 and the electrical connection region 522. At this time, the electrical connection region 522 is directly electrically connected to the corresponding pin 516. Therefore, the elastic conductor 514 can be a common elastic conductor or the elastic conductor provided with the conductive region as described above. Preferably, the electrical connection region 522 is a protruding metal conductive contact. Since the elastic conductor 514 is carried under the pin 516, the reliability of the electrical connection between the electrical connection region 522 and the pin 516 is relatively high. Similarly, the shape selection of the elastic conductor 514 can be the same as that described above and will not be elaborated here.

[0121] As described above, different parts of the signal output end can be independent of each other and do not interfere with each other. Preferably, in yet another embodiment of the present invention, the three pins 516 are respectively disposed in different parts of the signal output end. Therefore, the three different parts of the signal output end are respectively disposed at different positions of the elastic conductor. For example, the pin 516b is disposed at the top of the elastic conductor, the pin 516a is embedded inside the elastic conductor 514, and the pin 516c is disposed at the bottom of the elastic conductor, as Figure 11 shown. When there are more independent pins 516, the positions where different pins are disposed can be arbitrarily selected according to needs.

[0122] Figure 12a Schematic diagram of the detection end bending when the sensor of the embodiment of the present invention is mounted upright on the base 111, Figure 12b Schematic diagram of the detection end when the sensor of the embodiment of the present invention is mounted upside down on the base 111.

[0123] When the sensor 113 is mounted upright on the base 111, the pins 116 on the signal output end 113a face the elastic conductor 114, so the electrodes on the detection end 113b face the auxiliary needle 140. Before installing the analyte detection device, the substrate 113c of the detection end 113b will bend toward the side without electrodes, forming a bent shape as Figure 12a shown, and the end of the detection end 113b is far from the auxiliary needle 140. When installing the analyte detection device, the end of the bent detection end cannot closely fit the auxiliary needle 140, and the auxiliary needle 140 cannot normally pierce the detection end 113b into the user's skin, affecting the detection reliability of the sensor 113.

[0124] Figure 13 Assembly schematic diagram of the sensor of the embodiment of the present invention mounted upside down on the base 111.

[0125] In order to prevent the detection end 113b from bending before installing the analyte detection device, in the embodiment of the present invention, the sensor 113 is mounted upside down on the base 111, that is, the pin 116 faces the base 111, and the side of the detection end 113b without the electrode faces the auxiliary needle 140. At this time, the base 113c of the detection end 113b will bend toward the auxiliary needle 140, but due to the obstruction of the auxiliary needle 140, the base 113c of the detection end 113b will no longer bend, so as to achieve the following effect: Figure 12b The effect shown.

[0126] In the embodiment of the present invention, after the sensor 113 is flipped, the pins 116 are no longer in direct contact with the first surface of the elastic conductor 114 , so an external circuit 115 is required to realize the electrical connection between the pins 116 and the elastic conductor 114 .

[0127] In one embodiment of the present invention, the external circuit 115 is a three-dimensional circuit laid on the sensor base 111, one end of the three-dimensional circuit contacts the pin 116, and the other end contacts the second surface of the elastic conductor 114. The two ends of the three-dimensional circuit are bent to adapt to the three-dimensional structure of the first surface and the second surface of the elastic conductor 114, that is, the three-dimensional circuit realizes the electrical connection between the pin 116 and the second surface of the elastic conductor 114, and at the same time, the third surface of the elastic conductor 114 is electrically connected to the electrical connection area 122 of the transmitter, and the third surface is the surface opposite to the first surface. Since the conductive area surrounds the elastic conductor 114, when the sensor 113 is flipped, the electrical connection between the pin 116 and the electrical connection area 122 is indirectly realized through the three-dimensional circuit and the first surface, the second surface and the third surface of the elastic conductor 114.

[0128] In the embodiment of the present invention, the three-dimensional circuit can be manufactured by LDS process, so as to realize a conductive circuit that fits the base frame on the sensor base 111 made of plastic material.

[0129] In another embodiment of the present invention, the external circuit 115 is a conductive gel applied to the sensor base 111. The conductive gel is suitable for being applied on a flat surface, and the second surface of the elastic conductor 114 cannot be used. Therefore, in the embodiment of the present invention, the elastic conductor 114 can be widened, or the signal output end 113a of the sensor 113 can be narrowed, so that the first surface of the elastic conductor 114 can contact one end of the conductive gel, and the other end of the conductive gel is connected to the pin 116, and at the same time, the third surface of the elastic conductor 114 is in contact with the electrical connection area 122 of the transmitter, and the electrical connection between the pin 116 and the electrical connection area 122 can also be indirectly realized.

[0130] In the embodiment of the present invention, the number of the metal conductive contacts of the electrical connection area 122 is 3, which is consistent with the number of the pins 116 of the sensor 113, and each pin 116 corresponds to one metal conductive contact.

[0131] Figure 14 It is a schematic diagram of the three-dimensional sensor structure.

[0132] Reference Figure 14 . In an embodiment of the present invention, the three-dimensional sensor includes at least two groups of electrodes, which are respectively arranged on two planes (plane A and plane B) of the substrate 113c. The at least two groups of electrodes can realize functions such as electrode relay and redundant detection, thereby prolonging the service life of the sensor and improving the detection reliability of the sensor.

[0133] In some embodiments of the present invention, each group of electrodes can be a two-electrode system, which is composed of a working electrode and a counter electrode. The working electrode and the counter electrode can be arranged on the same side of the substrate, or on both sides of the substrate, and are respectively connected to the pin 116 (or pin 116') on the same side of the electrode through wires. In other embodiments of the present invention, each group of electrodes can be a three-electrode system, which is composed of a working electrode, a counter electrode and a reference electrode. The working electrode, the counter electrode and the reference electrode can be arranged on the same side of the substrate, or on both sides of the substrate, and are respectively connected to the pin 116 (or pin 116') on the same side of the electrode through wires.

[0134] In an embodiment of the present invention, whether it is a two-electrode system or a three-electrode system, the pins 116 are distributed on both sides of the sensor substrate 113c. When the elastic conductor 114 contacts the sensor signal output end 113a, it can only contact the pin 116' on plane A, but cannot contact the pin 116 on plane B. Therefore, an external circuit 115 is also required to realize the electrical connection between the pin 116 on plane B and the elastic conductor 114.

[0135] Figure 15 It is a schematic diagram of the three-dimensional sensor installed on the base 111.

[0136] Combined with reference Figure 13 and Figure 15. In some embodiments of the present invention, the external circuit 115 is a three-dimensional circuit laid on the sensor base 111. One end of the three-dimensional circuit contacts the pin 116 on the B surface of the sensor substrate, and the other end contacts the second surface of the elastic conductor 114. At the same time, the pin 116' on the A surface of the sensor substrate contacts the first surface of the elastic conductor 114, and the third surface of the elastic conductor 114 contacts the electrical connection area of the transmitter. The third surface is the surface opposite to the first surface. The two ends of the three-dimensional circuit are bent to adapt to the three-dimensional structure of the first and second surfaces of the elastic conductor 114. The conductive area and the insulating area of the elastic conductor 114 pass through the elastic conductor in the longitudinal direction, or surround the peripheral surface of the elastic conductor, or the conductive area is an elastic conductor with spaced distribution, and the insulating area is the space area in the middle of the conductive area, such as air or vacuum. That is, the three-dimensional circuit indirectly realizes the electrical connection between the pins 116(116') on both sides of the sensor and the electrical connection area 122 of the transmitter through the elastic conductor 114.

[0137] Continue to refer to Figure 15 , in some other embodiments of the present invention, the external circuit 115 is one of conductive gels, conductive pastes, conductive coatings, conductive tapes, or conductive glues, etc., such as conductive gel, smeared on the sensor base 111. In a preferred embodiment of the present invention, the external circuit 115 is a conductive gel smeared on the sensor base 111. As described above, the elastic conductor 114 is widened, or the signal output end 113a of the sensor 113 is narrowed, so that the n side of the first surface of the elastic conductor 114 contacts the n' end of the conductive gel, and the m' end of the conductive gel contacts the pin 116 on the B surface of the sensor. At the same time, the m side of the first surface of the elastic conductor 114 contacts the pin 116' on the A surface of the sensor, and the third surface contacts the electrical connection area 122. Thus, the electrical connection between the pins 116(116') on both sides of the sensor and the elastic conductor 114 is realized through the conductive gel, and further the electrical connection with the electrical connection area 122 of the transmitter is realized.

[0138] In the embodiments of the present invention, the number of metal conductive contacts in the electrical connection area 122 is the same as the total number of pins 116(116'). For example, in a double-sided three-electrode system, the number of pins 116(116') is 6, then the number of metal conductive contacts in the electrical connection area 122 is also 6.

[0139] It should be noted that the individual metal conductive contacts need to be insulated from each other, and the connection circuits between the pins 116(116') and the metal conductive contacts also need to be insulated from each other. Therefore, the pins 116(116') on the A surface and the B surface need to be staggered, as shown by the solid lines and dashed lines in Figure 15 , so that different pins 116(116') can be connected to different conductive areas of the elastic conductor 114, thereby realizing the insulation of the connection circuits from each other.

[0140] In an embodiment of the present invention, the elastic conductor 114 can be one of materials such as conductive rubber strips, conductive foam, or conductive foam. Since materials such as rubber strips, foam, and foam are electrically insulating themselves, good insulation effects between different circuits can be ensured. By arranging spaced conductive regions on the surface of the rubber strip, foam, or foam, or by allowing the conductive regions to pass through the insulating material in the longitudinal direction of the spacing, circuit conduction can be achieved on each surface of the elastic conductor 114.

[0141] In summary, the present invention discloses a three-dimensional sensor analyte detection device. At least two groups of electrodes are provided at the detection end of the sensor. The electrodes are connected to the pins through wires. Each group of pins, wires, and electrodes are respectively arranged on two sides of an insulating substrate. The pins located on the first side of the substrate are electrically connected to the elastic conductor through an external circuit, and the pins located on the second side of the substrate are directly electrically connected to the elastic conductor. At the same time, the elastic conductor is electrically connected to the electrical connection region of the transmitter, thereby realizing the electrical connection between the double-sided pins of the sensor and the transmitter. The circuit structure is simple. By arranging multiple groups of electrodes on both sides of the sensor substrate, the service life of the sensor can be extended and the detection reliability of the sensor can be improved through the electrode relay or redundant use method.

[0142] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A three-dimensional sensor analyte detection device, characterized in that, Comprising: A transmitter, the transmitter being provided with an electrical connection area; A bottom case, the bottom case being provided with a sensor base; A sensor, the sensor including a signal output end and a detection end, the signal output end being provided with pins, the detection end being provided with at least two groups of electrodes, the pins being connected to the electrodes through wires, and each group of the pins, the wires, and the electrodes being arranged on two sides of an insulating substrate; An elastic conductor, the elastic conductor including spaced conductive areas and insulating areas, the conductive areas being electrically connected to the electrical connection area; And An external circuit, the pins located on the first side of the substrate and the elastic conductor being electrically connected through the external circuit, and the pins located on the second side of the substrate being directly electrically connected to the elastic conductor.

2. The three-dimensional sensor analyte detection device according to claim 1, wherein The pins located on the first side of the substrate and the pins located on the second side of the substrate are arranged in an alternating manner.

3. The three-dimensional sensor analyte detection device according to claim 2, wherein The elastic conductor has a cuboid structure.

4. The three-dimensional sensor analyte detection device according to claim 3, wherein The first surface of the elastic conductor contacts the pins located on the second side of the substrate, the first end of the external circuit contacts the pins located on the first side of the substrate, the second surface of the elastic conductor contacts the second end of the external circuit, and the third surface of the elastic conductor contacts the electrical connection area.

5. The three-dimensional sensor analyte detection device according to claim 3, wherein The first end of the external circuit contacts the pins located on the first side of the substrate, the first surface of the elastic conductor contacts the pins located on the second side of the substrate and the second end of the external circuit, and the third surface of the elastic conductor contacts the electrical connection area.

6. The three-dimensional sensor analyte detection device according to claim 4, wherein The external circuit is a three-dimensional circuit laid on the sensor base.

7. The three-dimensional sensor analyte detection device according to claim 5, wherein, The external circuit is one of conductive gel, conductive paste, conductive paint, conductive tape, or conductive glue applied on the sensor base.

8. The three-dimensional sensor analyte detection device according to any one of claims 4 to 7, characterized in that, The first surface and the third surface of the elastic conductor are opposite to each other.

9. The three-dimensional sensor analyte detection device according to claim 1, wherein The conductive areas and the insulating areas respectively pass through the elastic conductor in the longitudinal direction.

10. The three-dimensional sensor analyte detection device according to claim 1, characterized in that, The conductive areas and the insulating areas surround the surface of the elastic conductor.

11. The three-dimensional sensor analyte detection device according to claim 1, wherein The conductive areas are spaced elastic conductors, and the insulating areas are spaced air areas of the conductive areas.

12. The three-dimensional sensor analyte detection device according to any one of claims 9 to 11, characterized in that, The elastic conductor is one of a conductive rubber strip, a conductive foam, or a conductive foam.

13. The three-dimensional sensor analyte detection device according to claim 1, wherein The signal output end is bent relative to the detection end, and the signal output end is laid flat on the sensor base.

14. The three-dimensional sensor analyte detection device according to claim 1, wherein, The electrical connection area is a metal conductive contact.

15. The three-dimensional sensor analyte detection device according to claim 14, wherein The number of the metal conductive contacts is the same as the number of the pins.

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