Sensor and blood glucose detector

Abstract

The invention discloses a sensor and a blood glucose detector, and relates to the technical field of blood glucose detection, the sensor is used for blood glucose detection, the sensor comprises a mounting plate and a flexible circuit board, the mounting plate is provided with a guide surface and two mounting surfaces, the two mounting surfaces are arranged on the two opposite sides of the mounting plate, the guide surface is located between the two mounting surfaces, and the flexible circuit board is arranged on the guide surface. The flexible circuit board is arranged on the two mounting surfaces and connected to the two mounting surfaces, the flexible circuit board comprises a detection section, a conduction section and a connection section, the detection section and the conduction section are arranged on the two mounting surfaces respectively, and the connection section is connected to the detection section and the conduction section; at least part of the connecting section is arranged on the guide surface and extends along the guide surface. The invention aims to reduce the fracture probability of the FPC through the sensor, reduce the failure risk of the sensor and the blood glucose detector, and prolong the service life of the sensor and the blood glucose detector.

Description

Technical Field

[0001] The present invention relates to the technical field of blood glucose detection, and particularly to a sensor and a blood glucose meter. Background Art

[0002] A blood glucose meter is a blood glucose monitoring system composed of a microelectrode biosensor and a transmitter, which can continuously monitor blood glucose through electrochemical reactions for a long time (such as 7 days, 14 days or up to 21 days) to judge the health status.

[0003] In existing blood glucose meters, a flexible printed circuit board (FPC) is used, so that on the basis of electrochemical reactions and circuit conduction of the blood glucose meter, it can better fit the human skin, reduce the volume and improve the comfort. However, due to the activities of human muscles and skin, the FPC flexible printed circuit board is prone to breakage after being worn for a period of time, resulting in the failure of the blood glucose meter and reducing the service life of the blood glucose meter. Summary of the Invention

[0004] The main object of the present invention is to propose a sensor and a blood glucose meter, aiming to reduce the breakage probability of the FPC flexible printed circuit board through the sensor, reduce the failure risk of the sensor and the blood glucose meter, and improve the service life of the sensor and the blood glucose meter.

[0005] To achieve the above object, the present invention proposes a sensor for blood glucose detection, the sensor comprising: A mounting plate provided with a guiding surface and two mounting surfaces, the two mounting surfaces being disposed on two opposite sides of the mounting plate, the guiding surface being located between the two mounting surfaces and connected to the two mounting surfaces; and A flexible printed circuit board, the flexible printed circuit board including a detection section, a conduction section and a connection section, the detection section and the conduction section being respectively disposed on the two mounting surfaces, and the connection section connecting the detection section and the conduction section; At least a part of the connection section is disposed on the guiding surface and extends along the guiding surface.

[0006] In one embodiment, the mounting plate includes a main body portion and an edge portion, the mounting surfaces being disposed on two opposite side surfaces of the main body portion, and the edge portion being disposed on the periphery of the main body portion; The guiding surface is disposed on the edge portion.

[0007] In one embodiment, an arc-shaped curved surface is provided on a side of the edge portion away from the main body portion, and the arc-shaped curved surface protrudes outward in a direction away from the main body portion; The arc-shaped curved surface forms the guiding surface.

[0008] In one embodiment, along a direction perpendicular to the mounting surface, the thickness of at least a part of the edge portion is greater than the thickness of the main body portion; and / or, the edge portion is elastically connected to the main body portion.

[0009] In one embodiment, the edge portion is provided with a first limiting groove, the groove wall of at least a part of the first limiting groove forms the guiding surface, and the connecting section is arranged in the first limiting groove.

[0010] In one embodiment, the mounting plate is provided with a conduction groove, and the conduction groove penetrates through the mounting plate, so that the groove wall of the conduction groove connects two of the mounting surfaces; The groove wall of the conduction groove is provided with the guiding surface, and the connecting section penetrates through the conduction groove.

[0011] In one embodiment, the groove wall of the conduction groove is smoothly and transitionally connected to the mounting surface; and / or, the edge of the connecting section abuts against the side wall of the conduction groove; and / or, the extending direction of the groove body of the conduction groove is arranged at an angle with the mounting surface.

[0012] In one embodiment, the sensor further includes a substrate, the mounting plate is connected to the substrate, a second limiting groove is provided on one side of the substrate facing the mounting plate, and at least a part of the conduction section is arranged in the second limiting groove; and / or, a third limiting groove is provided on one side of the mounting plate facing the substrate, and at least a part of the conduction section is arranged in the third limiting groove.

[0013] In one embodiment, the mounting plate includes a main body portion and a support platform, the support platform is arranged on one side of the main body portion facing the substrate, and at least a part of the conduction section is arranged on the support platform; and / or, the mounting plate is adhered to the substrate.

[0014] In one embodiment, the mounting plate includes a main body portion and an elastic portion, the mounting surface is provided on the main body portion, and the guiding surface is provided on one side of the elastic portion facing away from the main body portion; and / or, the thickness of the flexible circuit board is 0.08 mm to 0.15 mm.

[0015] In one embodiment, the flexible circuit board further includes a notch portion, and the notch portion is arranged at the connection portion between the detection section and the connection section; and / or, the flexible circuit board further includes a notch portion, and the notch portion is arranged at the connection portion between the conduction section and the connection section.

[0016] The present invention also provides a blood glucose detector, and the blood glucose detector includes: The sensor as described above; and a transmitter, the transmitter being communicatively connected to the sensor.

[0017] The sensor of the technical solution of the present invention is used for blood glucose detection. The sensor includes a mounting plate and a flexible circuit board. The mounting plate is provided with a guiding surface and two mounting surfaces. The two mounting surfaces are arranged on two opposite sides of the mounting plate. The guiding surface is located between the two mounting surfaces and is connected to the two mounting surfaces. The flexible circuit board includes a detection section, a conduction section and a connection section. The detection section is used to react with glucose in blood or tissue fluid to detect blood glucose indexes. The conduction section is used for electrically connecting with an external circuit to transmit the blood glucose data detected by the detection section to an external device. The detection section and the conduction section are respectively arranged on the two mounting surfaces, and the mounting surface provided with the detection section is attached to the human skin. The connection section is connected to the detection section and the conduction section, and at least part of the connection section is arranged on the guiding surface. By providing the guiding surface, the connection section can be guided to extend along the guiding surface, so that the connection section extends from one mounting surface to the other mounting surface. Thus, on the basis of realizing the connection and conduction between the detection section and the conduction section, a natural transition extension can be achieved, reducing the risk of breakage of the connection section and the entire flexible circuit board, reducing the failure risk of the sensor and the blood glucose detector, and improving the service life of the sensor and the blood glucose detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of the sensor in an embodiment of the present invention; Figure 2 is an exploded schematic diagram of the sensor in an embodiment of the present invention; Figure 3 is a schematic cross-sectional diagram of the sensor in an embodiment of the present invention; Figure 4 is Figure 3 a partial enlarged view of part A in Figure 5 is a schematic cross-sectional diagram of the sensor from another perspective in an embodiment of the present invention; Figure 6 is a schematic structural diagram of the mounting plate in an embodiment of the present invention; Figure 7 is a schematic structural diagram of the flexible circuit board in an embodiment of the present invention.

[0020] Explanation of the reference numerals in the drawings: 100. Sensor; 1. Mounting plate; 11. Main body; 111. Mounting surface; 12. Edge part; 121. Guiding surface; 13. Support platform; 2. Flexible circuit board; 21. Detection section; 22. Conductive section; 23. Connection section; 24. Notch; 3. Substrate; 31. Mounting seat; 32. Conductive terminal; 4. Adhesive tape.

[0021] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0025] Please refer to Figures 1 to 7As shown in the figure, the present invention provides a sensor 100 for blood glucose detection. The sensor 100 includes a mounting plate 1 and a flexible circuit board 2. The mounting plate 1 is provided with a guiding surface 121 and two mounting surfaces 111. The two mounting surfaces 111 are arranged on two opposite sides of the mounting plate 1. The guiding surface 121 is located between the two mounting surfaces 111 and is connected to the two mounting surfaces 111. The flexible circuit board 2 includes a detection section 21, a conduction section 22 and a connection section 23. The detection section 21 and the conduction section 22 are respectively arranged on the two mounting surfaces 111. The connection section 23 is connected to the detection section 21 and the conduction section 22; at least a part of the connection section 23 is arranged on the guiding surface 121 and extends along the guiding surface 121.

[0026] In this embodiment, the sensor 100 is applied to a blood glucose meter, which is a medical device capable of monitoring blood glucose levels. The blood glucose meter can continuously and real-time detect the changes in the daily blood glucose of diabetic patients and record the blood glucose data in real time, and is widely used in the daily blood glucose management of diabetic patients. Different from the traditional finger prick test, the blood glucose meter in this application realizes continuous blood glucose detection by adhering to the skin.

[0027] Specifically, the blood glucose meter includes a sensor 100 and a transmitter. The sensor 100 is usually adhered to the human skin, such as the upper arm or abdomen, and glucose oxidase is provided inside the sensor 100. The glucose oxidase can react with glucose in the tissue fluid to measure the glucose concentration in the tissue fluid and convert the detected glucose concentration into an electrical signal. The transmitter is electrically connected to the sensor 100 to obtain the electrical signal about the glucose concentration in the sensor 100, and at the same time wirelessly transmits the obtained electrical signal about the glucose concentration to an external signal receiving device, such as a smart phone, a smart watch, a special monitor, etc., to facilitate the user to view data, analyze data, recall data, etc.

[0028] In this embodiment, the sensor 100 includes a mounting plate 1 and a flexible circuit board 2. The mounting plate 1 is used to mount and place the flexible circuit board 2. The mounting plate 1 has a plate-like or sheet-like structure. Mounting surfaces 111 are provided on two sides of the mounting plate 1 with the largest plate surface area. The two mounting surfaces 111 are arranged opposite to each other. At the same time, a guiding surface 121 is also provided on the mounting plate 1. The guiding surface 121 is located between the two mounting surfaces 111, and the guiding surface 121 is connected to the two mounting surfaces 111.

[0029] Further, as Figures 2 to 5 and Figure 7As shown, the flexible circuit board 2 includes a detection section 21, a conduction section 22, and a connection section 23. The connection section 23 is located between the detection section 21 and the conduction section 22, and the connection section 23 is connected to and electrically conductive with the detection section 21 and the conduction section 22. Among them, the detection section 21 is disposed on one mounting surface 111 of the mounting plate 1 for contacting the user's skin and performing blood glucose detection. The conduction section 22 is disposed on the other mounting surface 111 of the mounting plate 1. The connection section 23 is disposed on the guiding surface 121. The conduction section 22 is used for electrically connecting with the transmitter. The connection section 23 transmits the blood glucose data detected by the detection section 21 to the transmitter through the conduction section 22, and then transmits it to an external signal receiving device through the transmitter, so that the user can understand the current blood glucose data in real time.

[0030] It can be understood that the guiding surface 121 is preferably an arc-shaped surface, and the guiding surface 121 can be disposed on the periphery of the mounting plate 1 or in the internal structure of the mounting plate 1. For example, a groove is formed inside the mounting plate 1, and the guiding surface 121 is provided to guide the extension of the connection section 23, so that the connection section 23 extends naturally and continuously from one mounting surface 111 to the other mounting surface 111, reducing the bending degree of the connection section 23 during the turning process, thereby reducing the risk of breakage of the connection section 23 and the flexible circuit board 2 as a whole, and extending the service life of the flexible circuit board 2, the sensor 100, and the blood glucose detector. At the same time, the guiding surface 121 can reduce the friction and damage suffered by the flexible circuit board 2 during the installation process and extend its service life.

[0031] The sensor 100 of this technical solution is used for blood glucose detection. The sensor 100 includes a mounting plate 1 and a flexible circuit board 2. The mounting plate 1 is provided with a guiding surface 121 and two mounting surfaces 111. The two mounting surfaces 111 are arranged on two opposite sides of the mounting plate 1. The guiding surface 121 is located between the two mounting surfaces 111 and is connected to the two mounting surfaces 111. The flexible circuit board 2 includes a detection section 21, a conduction section 22 and a connection section 23. The detection section 21 is used to react with glucose in blood or tissue fluid to detect blood glucose indexes. The conduction section 22 is used for electrical connection with an external circuit (such as a transmitter) to transmit the blood glucose data detected by the detection section 21 to an external device (such as a transmitter). The detection section 21 and the conduction section 22 are respectively arranged on the two mounting surfaces 111, and the mounting surface 111 provided with the detection section 21 is attached to the human skin. The connection section 23 is connected to the detection section 21 and the conduction section 22, and at least part of the connection section 23 is arranged on the guiding surface 121. By setting the guiding surface 121, the connection section 23 can be guided to extend along the guiding surface 121, so that the connection section 23 extends from one mounting surface 111 to the other mounting surface 111. Thus, on the basis of realizing the connection and conduction between the detection section 21 and the conduction section 22, natural transition extension can be achieved, the risk of breakage of the connection section 23 and the entire flexible circuit board 2 can be reduced, the failure risk of the sensor 100 and the blood glucose detector can be reduced, and the service life of the sensor 100 and the blood glucose detector can be improved.

[0032] In an embodiment, as Figures 2 to 6 shown, the mounting plate 1 includes a main body portion 11 and an edge portion 12. The mounting surfaces 111 are arranged on two opposite side surfaces of the main body portion 11, and the edge portion 12 is arranged on the periphery of the main body portion 11; the guiding surface 121 is arranged on the edge portion 12.

[0033] In this embodiment, the main body portion 11 is the main structure of the mounting plate 1 for carrying the flexible circuit board 2. The main body portion 11 can be a plate-like structure, a table-like structure, a seat body structure, etc. Two mounting surfaces 111 are formed on two opposite side surfaces of the main body portion 11. One of the mounting surfaces 111 is attached to the user's skin, and the detection section 21 of the flexible circuit board 2 is arranged on the mounting surface 111 attached to the user's skin. The edge portion 12 is arranged at the periphery of the main body portion 11. For example, the edge portion 12 surrounds the periphery of the main body portion 11, or at a partial area of the main body portion 11, at least part of the edge portion 12 is provided with the guiding surface 121, so that the connection section 23 extends along the guiding surface 121 of the edge portion 12.

[0034] At the same time, the edge portion 12 and the main body portion 11 can be integrally formed, or can be separately manufactured and connected to each other. Among them, the edge portion 12 can be detachably connected to the main body portion 11, such as snap connection, insertion connection, etc., or can be elastically connected, slidably connected, rotatably connected and other movable connection methods with the main body portion 11, which are not limited here.

[0035] It can be understood that the edge portion 12 is arranged on the periphery of the main body 11 so that the connecting section 23 can extend from one mounting surface 111 along the edge portion 12 from the periphery of the main body 11 to another mounting surface 111, so that on the basis of realizing the connection and conduction between the detection section 21 and the conduction section 22, the connecting section 23 is naturally extended through the guidance of the edge portion 12 and the guide surface 121 arranged on the edge portion 12, and the connecting section 23 is guided to extend along a specific direction of the periphery of the main body 11, so as to avoid the connecting section 23 from being broken due to large stress in the corner area, and the space occupied by the flexible circuit board 2 can be reduced, and it is only necessary to ensure that the flexible circuit board 2 is extended in contact with the edge portion 12 without setting other structures; at the same time, when the edge portion 12 and the main body 11 are detachably connected, the edge portions 12 of different sizes and shapes can also be replaced to adapt to flexible circuit boards 2 of different sizes and types.

[0036] In one embodiment, if Figures 2 to 6 As shown, a curved surface is provided on a side of the edge portion 12 away from the main body portion 11 , and the curved surface is convex in a direction away from the main body portion 11 ; the curved surface forms a guide surface 121 .

[0037] In this embodiment, the shape of the curved surface can be a semicircular surface, a hemispherical surface, a parabola or other curved surface, and the curved surface is convex in the direction away from the main body 11, so that the extension direction of the curved surface starts from one mounting surface 111, first gradually bends and extends in the direction away from the main body 11, and then gradually bends and extends in the direction close to the main body 11, and is connected to another mounting surface 111. It can also be understood that the center of curvature of the curved surface is located at the periphery of the side adjacent to the main body 11, and the curved surface forms the above-mentioned guide surface 121, so that the connecting section 23 of the flexible circuit board 2 bends and extends along the curved surface.

[0038] It can be understood that the curved surface of the edge portion 12 can provide a smoother and gentler path for the connecting section 23, so that when the flexible circuit board 2 is extended along the guiding surface 121 of the curved surface, the contact length and contact area between the connecting section 23 and the edge portion 12 can be extended as much as possible, thereby reducing the bending degree of the connecting section 23 at the corner between one mounting surface 111 and another mounting surface 111, and slowing down the bending of the connecting section 23 as much as possible to prevent the connecting section 23 and the entire flexible circuit board 2 from breaking or being damaged, thereby extending the service life of the flexible circuit board 2, and more stably supporting the flexible circuit board 2, reducing friction and damage, and ensuring the accuracy and reliability of the connection.

[0039] In one embodiment, along a direction perpendicular to the mounting surface 111 , the thickness of at least a portion of the edge portion 12 is greater than the thickness of the main body portion 11 .

[0040] In this embodiment, in the direction perpendicular to the mounting surface 111, that is, in the thickness direction of the main body 11 which is a plate structure, the thickness of at least a part of the edge portion 12 is greater than the thickness of the main body 11, so that the arc-shaped curved surface formed by the edge portion 12 has a larger radius of curvature, and the edge portion 12 exceeds the mounting surface 111 in the direction perpendicular to the mounting surface 111.

[0041] It can be understood that by increasing the thickness of the edge portion 12 in the direction perpendicular to the mounting surface 111, without increasing the thickness of the main body 11 in the direction perpendicular to the mounting surface 111, the length of the guiding surface 121 between the two mounting surfaces 111 is increased, so as to increase the contact length and area between the connecting section 23 and the edge portion 12, and further increase the guiding of the connecting section 23 by the edge portion 12. On the basis of ensuring the stable support of the connecting section 23 by the edge portion 12, the bending degree of the connecting section 23 from one mounting surface 111 to the other mounting surface 111 is reduced, and the connecting section 23 and the entire flexible circuit board 2 are effectively prevented from being broken or damaged, and the service life of the flexible circuit board 2 is extended.

[0042] Optionally, the edge portion 12 is elastically connected to the main body 11; it can be understood that the edge portion 12 is elastically connected to the main body 11, such as setting an elastic member between the edge portion 12 and the main body 11, or setting an elastic glue layer or an elastic buffer layer between the edge portion 12 and the main body 11, so that the edge portion 12 can approach or move away from the main body 11. And when the connecting section 23 is attached to the guiding surface 121 of the edge portion 12, the connecting section 23 will generate a force to squeeze the edge portion 12 towards the main body 11. By setting the connection between the edge portion 12 and the main body 11 to be elastically connected, when the edge portion 12 is squeezed by the connecting section 23 of the flexible circuit board 2, the distance between the edge portion 12 and the main body 11 can be shortened, and the edge portion 12 can move closer to the main body 11 to provide buffering for the connecting section 23.

[0043] Especially when the user wears the blood glucose meter with the sensor 100, due to the softness of the skin surface and the unevenness of the subcutaneous muscles, during the daily activities of the user, it is inevitable that the sensor 100 attached to the skin will be bent and deformed, and the internal flexible circuit board 2 will also be bent and deformed accordingly. By setting the connection between the edge portion 12 and the main body 11 to be elastically connected, the bending and deformation of the connecting section 23 and the flexible circuit board 2 can be buffered by the elastic connection between the edge portion 12 and the main body 11, reducing the bending and deformation of the connecting section 23 and the flexible circuit board 2 itself, and reducing the possible breakage of the flexible circuit board 2 due to long-term bending and deformation, and extending the service life of the flexible circuit board 2.

[0044] In one embodiment, a first limiting groove is provided on the edge portion 12, and the groove walls of at least a part of the first limiting groove form a guiding surface 121, and the connecting section 23 is arranged in the first limiting groove.

[0045] In this embodiment, the first limiting groove can be provided at a position on the edge portion 12 adjacent to one of the mounting surfaces 111, or can be provided on the entire edge portion 12 and connect the two mounting surfaces 111, and the extending direction of the groove body of the first limiting groove is the same as the extending direction of the connecting section 23 from one mounting surface 111 to the other mounting surface 111, so that the connecting section 23 is limited and arranged in the first limiting groove and extends along the first limiting groove. Among them, the groove walls of the first limiting groove form a guiding surface 121, such as the side wall or the bottom wall of the first limiting groove, and the connecting section 23 can be attached to the guiding surface 121 and extend along the extending direction of the groove body of the first limiting groove.

[0046] It can be understood that by providing the first limiting groove, the connecting section 23 arranged on the edge portion 12 can be limited and guided. That is, on the one hand, the side wall of the first limiting groove abuts against the edge of the connecting section 23, and the connecting section 23 is attached to other groove walls of the first limiting groove to limit the connecting section 23, keep the position of the connecting section 23 in the first limiting groove and keep the position of the connecting section 23 relative to the edge portion 12 fixed. On the other hand, it can also guide the connecting section 23 to extend along the edge portion 12. Especially on the basis of setting an arc-shaped curved surface on the edge portion 12, the bending and deformation of the connecting section 23 and the flexible circuit board 2 itself can be effectively reduced.

[0047] In one embodiment, the mounting plate 1 is provided with a conduction groove, and the conduction groove penetrates through the mounting plate 1, so that the groove walls of the conduction groove connect the two mounting surfaces 111; the groove walls of the conduction groove are provided with a guiding surface 121, and the connecting section 23 passes through the conduction groove and is attached to the groove walls of the conduction groove.

[0048] In this embodiment, the main body portion 11 of the mounting plate 1 is provided with a conduction groove, and the conduction groove penetrates through the mounting plate 1, so that the notch at one end of the conduction groove is arranged on one mounting surface 111, and the notch at the other end of the conduction groove is arranged on the other mounting surface 111, so that the groove walls of the conduction groove are connected to the two mounting surfaces 111, and the connecting section 23 can pass through the conduction groove from one mounting surface 111 to the other mounting surface 111. At the same time, the bottom wall of the conduction groove forms the above-mentioned guiding surface 121, and the connecting section 23 is attached to the guiding surface 121.

[0049] It can be understood that on the basis of limiting and guiding the connecting section 23 through the conduction groove, without the need for large-scale bending and deformation, the connecting section 23 can be connected to the detection section 21 and the conduction section 22 provided on the two mounting surfaces 111 through the conduction groove, thereby avoiding bending and deformation of the connecting section 23 when avoiding the mounting plate 1, reducing the bending and deformation of the connecting section 23 and the flexible circuit board 2 itself, reducing the possible breakage of the flexible circuit board 2 due to long-term bending deformation, and extending the service life of the flexible circuit board 2.

[0050] In one embodiment, the groove wall of the conduction groove is smoothly connected to the mounting surface 111; it can be understood that the groove wall of the conduction groove is smoothly connected to the mounting surface 111, so that an arc transition is formed at the connection between the groove wall of the conduction groove and the mounting surface 111, so as to reduce the influence on the connecting section 23 and the flexible circuit board 2 at the connection when the connecting section 23 extends and transitions from the groove wall of the conduction groove to the mounting surface 111, such as the extrusion and cutting of the connecting section 23 by the sharp corners, etc., so that the connecting section 23 is smoother during the process of extending from the mounting surface 111 to the conduction groove and from the conduction groove to the mounting surface 111, and reduces the influence of other structures such as the mounting plate 1 on it.

[0051] Optionally, the edge of the connecting section 23 abuts against the side wall of the conduction groove; it can be understood that the edge of the connecting section 23 abuts against the groove wall of the conduction groove to limit the displacement of the connecting section 23 in its plane direction through the side wall of the conduction groove, reduce the stress increase at the connection between the connecting section 23 and the conduction section 22 and the stress increase at the connection between the connecting section 23 and the detection section 21 due to the displacement of the connecting section 23 itself, reduce the risk of breakage at the connections between the connecting section 23 and the conduction section 22 and the detection section 21, and improve the service life of the flexible circuit board 2 and the sensor 100.

[0052] Optionally, the extending direction of the groove body of the conduction groove is arranged at an angle with the mounting surface 111; it can be understood that the extending direction of the groove body of the conduction groove is arranged at an angle with the mounting surface 111, thereby extending the length of the conduction groove on the mounting plate 1 to extend the length of the connecting section 23 between the two mounting surfaces 111. Compared with the shorter connecting section 23, the longer connecting section 23 has better anti-deformation ability and deformation recovery ability. At the same time, the inclined conduction groove can also slow down the inclination angle of the connecting section 23 from one mounting surface 111 to the other mounting surface 111, reduce the bending degree at the connections between the connecting section 23 and the conduction section 22 and the detection section 21, and reduce the breakage risk at this place, and improve the service life of the flexible circuit board 2.

[0053] In one embodiment, the sensor 100 further includes a substrate 3. The mounting plate 1 is connected to the substrate 3. A second limiting groove is provided on the side of the substrate 3 facing the mounting plate 1, and at least a part of the conduction section 22 is arranged in the second limiting groove. Optionally, a third limiting groove is provided on the side of the mounting plate 1 facing the substrate 3, and at least a part of the conduction section 22 is arranged in the third limiting groove.

[0054] It can be understood that the sensor 100 further includes a substrate 3. The substrate 3 is the main body support structure of the sensor 100 for mounting and arranging the mounting plate 1. The substrate 3 and the mounting plate 1 can be connected by pasting. The extending direction of the plate surface of the substrate 3 is the same as that of the plate surface of the mounting plate 1. The conduction section 22 and a part of the connection section 23 are located between the substrate 3 and the mounting plate 1. At the same time, a second limiting groove is provided on the side of the substrate 3 facing the mounting plate 1 and / or a third limiting groove is provided on the side of the mounting plate 1 facing the substrate 3, so that at least a part of the conduction section 22 is separately arranged in the second limiting groove, or at least a part of the conduction section 22 is separately arranged in the third limiting groove, or a part of the conduction section 22 is arranged in the second limiting groove and the other part is arranged in the third limiting groove, so as to limit the conduction section 22 through the third limiting groove and / or the third limiting groove, keep the position of the conduction section 22 fixed, and further keep the position of the connection section 23 connected to the conduction section 22 fixed, reduce the risk of breakage at the connection between the connection section 23 and the conduction section 22, and improve the service life of the flexible circuit board 2.

[0055] In one embodiment, as Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, the mounting plate 1 includes a main body portion 11 and a support platform 13. The support platform 13 is arranged on the side of the main body portion 11 facing the substrate 3, and at least a part of the conduction section 22 is arranged on the support platform 13. It can be understood that a mounting seat 31 is provided on the substrate 3, and a conductive terminal 32 is arranged in the mounting seat 31. The conductive terminal 32 can be a conductive spring pin or a conductive capsule. One end of the conductive terminal 32 is electrically connected to an external device, such as a transmitter, and the other end of the conductive terminal 32 is electrically connected to the conduction section 22 of the flexible circuit board 2. The mounting plate 1 is provided with a support platform 13 corresponding to the mounting seat 31. The support platform 13 is arranged on the main body portion 11, and at least a part of the conduction section 22 is arranged on the support platform 13, so as to reasonably adjust the distance between the conduction section 22 and the conductive terminal 32, reduce the large deformation and bending of the conduction section 22 caused by the distance gap between the conduction section 22 and the conductive terminal 32, and improve the service life of the conduction section 22 and the overall flexible circuit board 2.

[0056] In one embodiment, the mounting plate 1 includes a main body portion 11 and an elastic portion. The main body portion 11 is provided with a mounting surface 111 and a guiding surface 121. The side of the elastic portion facing away from the main body portion 11 is provided with a guiding surface 121. It can be understood that on the basis of providing the main body portion 11, the mounting plate 1 is further provided with an elastic portion. The elastic portion can be structures such as springs and elastic sheets that can generate elastic deformation, or elastic materials such as silica gel and rubber with elastic capabilities. The elastic portion can be provided on the mounting surface 111 of the main body portion 11, or can be separately provided at the periphery of the main body portion 11, or provided at the edge portion 12 connected to the main body portion 11, so that a guiding surface 121 is formed on the side of the elastic portion facing away from the main body portion 11 to guide and arrange the connecting section 23. By providing the elastic portion, the elastic buffering ability of the connecting section 23 and the flexible circuit board 2 relative to the mounting plate 1 can be increased, the influence on the flexible circuit board 2 caused by the change of the overall position of the sensor 100 can be reduced, and the excessive force and breakage failure caused by the direct connection of each part of the flexible circuit board 2 to the mounting plate 1 can be reduced, thereby improving the service life of the flexible circuit board 2. Optionally, the thickness of the flexible circuit board 2 is 0.08 mm to 0.15 mm to ensure that the thickness of the flexible circuit board 2 is maintained within a reasonable range. If it is too thin, its strength is low and it is easy to break. If it is too thick, its bending stress is large and it is also easy to break.

[0057] In one embodiment, as Figure 7 shown, the flexible circuit board 2 further includes a notch portion 24. The notch portion 24 is provided at the connection between the detection section 21 and the connecting section 23. Optionally, the flexible circuit board 2 further includes a notch portion 24. The notch portion 24 is provided at the connection between the conduction section 22 and the connecting section 23.

[0058] It can be understood that at the connection between the connecting section 23 and the detection section 21 and at the connection between the connecting section 23 and the conduction section 22, a notch portion 24 is provided. The notch portion 24 is an opening or slot with a curvature, so that a space with an arc angle is formed at the connection between the detection section 21 and the connecting section 23, and at the connection between the conduction section 22 and the connecting section 23, and the connecting edges between the connecting section 23 and the detection section 21 are smooth and continuous, and the connecting edges between the connecting section 23 and the conduction section 22 are smooth and continuous.

[0059] At the same time, by providing the notch portion 24, the stress concentration at the connection between the connecting section 23 and the detection section 21 and at the connection between the connecting section 23 and the conduction section 22 during bending or stretching can be reduced, and the stress is evenly dispersed through the notch portion 24 with a curvature to reduce the fatigue damage at the connection, reduce problems such as poor contact or open circuit caused by bending, improve the bendability and mechanical connection stability, provide a margin for deformation such as bending and stretching of the flexible circuit board 2, and improve the service life of the flexible circuit board 2 and the sensor 100 with the flexible circuit board 2.

[0060] In another embodiment of the present invention, asFigures 1 to 3 and Figure 5 As shown, the sensor 100 further includes an adhesive tape 4. The adhesive tape 4 is disposed on the substrate 3 and surrounds the mounting plate 1. The extending plane of the adhesive tape 4 is parallel or coplanar with the detection section 21. By providing the adhesive tape 4, the sensor 100 can be fixed to the skin surface of the user, and the extending plane of the adhesive tape 4 is parallel or coplanar with the detection section 21 of the flexible circuit board 2, so as to enable the detection section 21 to contact the skin of the user as much as possible for blood glucose detection. At the same time, it can also reduce the deformation of the detection section 21 caused by the changes of the user's skin and muscles, reduce the risk of breakage of the detection section 21, and improve the service life of the flexible circuit board 2 and the sensor 100.

[0061] The present invention also provides a blood glucose detector, which includes a sensor 100 and a transmitter. The transmitter is communicatively connected to the sensor 100. The specific structure of the sensor 100 refers to the foregoing embodiments. Since this blood glucose detector adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be elaborated herein one by one.

[0062] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the technical concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A sensor for blood sugar detection, characterized in that: The sensor comprises: A mounting plate, wherein the mounting plate is provided with a guide surface and two mounting surfaces, the two mounting surfaces are provided on two sides of the mounting plate that are away from each other, the guide surface is located between the two mounting surfaces and is connected to the two mounting surfaces; and A flexible circuit board, the flexible circuit board comprising a detection section, a conduction section and a connection section, the detection section and the conduction section are respectively arranged on the two mounting surfaces, and the connection section is connected to the detection section and the conduction section; At least part of the connecting section is disposed on the guiding surface and extends along the guiding surface.

2. The sensor according to claim 1, characterized in that The mounting plate comprises a main body and an edge portion, the mounting surface is arranged on two side surfaces of the main body that are away from each other, and the edge portion is arranged on the periphery of the main body; The guide surface is arranged on the edge portion.

3. The sensor according to claim 2, characterized in that A curved surface is provided on a side of the edge portion away from the main body portion, and the curved surface is convex in a direction away from the main body portion; The arcuate surface forms the guiding surface.

4. The sensor according to claim 2, characterized in that Along a direction perpendicular to the mounting surface, at least a portion of the edge portion has a thickness greater than a thickness of the main body portion; And / or, the edge portion is elastically connected to the main body portion.

5. The sensor according to claim 2, characterized in that The edge portion is provided with a first limiting groove, at least a portion of the groove wall of the first limiting groove forms the guiding surface, and the connecting section is provided in the first limiting groove.

6. The sensor according to claim 1, characterized in that The mounting plate is provided with a conducting groove, and the conducting groove is arranged through the mounting plate so that the groove wall of the conducting groove connects the two mounting surfaces; The groove wall of the conducting groove is provided with the guiding surface, and the connecting section is penetrated through the conducting groove.

7. The sensor according to claim 6, characterized in that The groove wall of the conducting groove is smoothly transitionally connected to the mounting surface; And / or, the edge of the connecting section abuts against the side wall of the conducting groove; And / or, the extending direction of the groove body of the conducting groove is arranged at an angle with the mounting surface.

8. The sensor according to any one of claims 1 to 7, characterized in that The sensor further comprises a substrate, the mounting plate is connected to the substrate, a second limiting groove is provided on a side of the substrate facing the mounting plate, and at least part of the conducting section is provided in the second limiting groove; And / or, a third limiting groove is provided on a side of the mounting plate facing the base plate, and at least a portion of the conducting section is provided in the third limiting groove.

9. The sensor according to claim 8, characterized in that The mounting plate comprises a main body and a support platform, wherein the support platform is arranged on a side of the main body facing the substrate, and at least part of the conductive section is arranged on the support platform; And / or, the mounting plate is adhered to the substrate.

10. The sensor according to any one of claims 1 to 7, characterized in that The mounting plate comprises a main body and an elastic part, the main body is provided with the mounting surface, and the elastic part is provided with the guide surface on a side facing away from the main body; And / or, the thickness of the flexible circuit board is 0.08 mm to 0.15 mm.

11. The sensor according to any one of claims 1 to 7, characterized in that The flexible circuit board further comprises a notch portion, and the notch portion is provided at the connection between the detection section and the connection section; And / or, the flexible circuit board further includes a notch portion, and the notch portion is provided at a connection between the conducting section and the connecting section.

12. A blood glucose detector, characterized in that: The blood glucose detector comprises: A sensor as claimed in claims 1 to 11; and A transmitter is communicatively connected to the sensor.

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