Analyte detection device

Abstract

The utility model relates to the technical field of medical instruments, and discloses an analyte detection device which comprises an upper cover and a lower shell which are connected with each other to form a shell, and further comprises a sensor and a circuit board, the sensor comprises an implanting part and a connecting part, the connecting part penetrates through the lower shell and extends into the shell, and a fixing assembly is arranged on the lower shell to fix the connecting part; a fixing groove used for clamping the connecting part is formed in the circuit board in a penetrating mode, a plurality of independent clamping structures are symmetrically arranged on the circuit board on the two sides of the fixing groove, and the surfaces of at least two clamping structures are covered with conductive materials to form a signal transmission channel so that signal connection between the sensor connecting part and the circuit board can be achieved. According to the technical scheme, a plurality of fixing grooves used for clamping and fixing the sensor are directly formed in the circuit board, the sensor is fixed, and meanwhile, according to the arrangement of contacts on the sensor, a signal transmission channel is directly formed on the circuit board clamping structure and the sensor in a mode of coating a conductive material, so that signal conduction between the sensor and the circuit board is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an analyte detection device. Background Art

[0002] Implantable sensors are used to obtain target analyte data in the human body by implanting them on the surface of the skin. The dynamic blood glucose monitor is a new type of analyte detection device that indirectly reflects the measurement of blood glucose by recording the electrical signal generated by the glucose reaction in the interstitial fluid through the sensor implanted in the subcutaneous tissue. It can continuously monitor the changes in blood glucose in the human body. One end of the sensor of the dynamic blood glucose monitor is implanted in the subcutaneous tissue of the human body to react with glucose and collect electrical signals, and the other end is connected to the transmitter to transmit the electrical signal to the signal processing module. The connection between the sensor and the transmitter needs to be installed and fixed, and the electrical signal is connected at the same time.

[0003] The dynamic blood glucose monitor can be worn on the human body for 7-14 consecutive days and continuously monitor the changes in blood sugar in the human body. In order to ensure that the user does not affect work, life and exercise during wearing, the sensor needs to be effectively fixed to ensure that the sensor can stably collect biological signals and transmit them to the transmitter.

[0004] The prior art uses a clamping spring to fix the sensor and connect the electrical signal. When installing the clamping spring, the circuit board needs to be grooved first, and then the clamping spring is fixed to the circuit board by welding or plugging. The clamping spring not only needs to ensure contact and connection with the sensor contact, but also needs to ensure contact and connection with the signal receiving end of the circuit board. This design method is complicated and cumbersome to operate. It is very likely that the signal contact is poor due to the improper installation of the clamping spring. In the process of fixing the clamping spring by welding, since the distance between two adjacent clamping springs is close, the welding materials on the two adjacent clamping springs may flow and connect together, which will cause a signal short circuit.

[0005] Moreover, the existing technology only fixes the sensor by clamping the spring clip. This fixing method is likely to cause loosening and poor contact after the sensor is used for a long time. Especially when wearing an implantable analyte monitoring device for sports, since the sensor is partially located in the subcutaneous tissue of the human body, the muscles will cause the sensor to shake during exercise, and poor contact is most likely to occur at this time.

[0006] Therefore, there is an urgent need to provide an analyte detection device to solve the above problems. Utility Model Content

[0007] One purpose of the utility model is to provide an analyte detection device, which forms a signal transmission path by coating a conductive material between a clamping structure and a connecting part. The device is simple and efficient, and can ensure signal stability. At the same time, the sensor is further fixed to ensure that the sensor can be firmly fixed.

[0008] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0009] An analyte detection device includes an upper cover and a lower shell connected to each other to form a housing, and also includes a sensor and a circuit board;

[0010] The sensor includes an implantation portion and a connection portion, and the connection portion is fixed inside the housing through a fixing assembly;

[0011] A fixing groove for engaging the connecting part is provided through the circuit board, and a plurality of clamping structures are provided on the circuit board on both sides of the fixing groove. Conductive material is covered between the surface of the clamping structure and the connecting part to form a signal transmission path to realize signal connection between the connecting part and the circuit board.

[0012] A plurality of clamping structures are symmetrically arranged along two sides of the fixing groove, and surfaces of no less than two clamping structures are covered with conductive material.

[0013] A plurality of contacts corresponding to the electrodes on the implanted part are arranged on one side or both sides of the connecting part, and the surface of the clamping structure corresponding to the contact position is in contact with the contact to form signal conduction by coating conductive material.

[0014] The fixing assembly comprises a plurality of fixing seats arranged along the extending direction of the connecting part, and a clamping groove for clamping the connecting part is concavely arranged on the fixing seats.

[0015] The fixing seat passes through the circuit board from bottom to top through the gap between two adjacent clamping structures.

[0016] A through hole for passing the sensor is formed on the lower shell, a sealing seat is arranged around the through hole on the upper end surface of the lower shell, a sealing groove is concavely arranged on the upper end surface of the sealing seat, and the sensor extends out of the lower shell from the side wall of the sealing seat through the sealing groove.

[0017] A mounting seat is also provided in the shell, and a protrusion corresponding to the sealing groove is convexly provided on the lower end surface of the mounting seat. The bottom of the mounting seat is connected to the sealing seat by the protrusion engaging the sealing groove, and the top is sealed and connected to the lower end surface of the implant needle seat.

[0018] The upper end surface of the lower shell is provided with a plurality of first buckles, the bottom of the circuit board contacts the upper end surface of the lower shell, and the top is limited and fixed by the first buckles.

[0019] One of the lower shell or the upper cover is provided with a second buckle, and the other is provided with a connecting groove corresponding to the second buckle. The lower shell and the upper cover are connected to form a shell by engaging the connecting groove with the second buckle.

[0020] The circuit board is provided with a plurality of slots for passing the second buckle. The implantable analyte monitoring device comprises any one of the above analyte detection devices.

[0021] The beneficial effects of the utility model are:

[0022] The analyte detection device provided by the utility model directly opens a plurality of fixing grooves for clamping and fixing sensors on the circuit board, thereby fixing the sensors. At the same time, according to the contact arrangement on the sensor, a signal transmission path is formed by coating a conductive material directly on the clamping structure to realize signal conduction between the sensor and the circuit board. The structure is simple and the production and processing is more efficient.

[0023] At the same time, by arranging a fixing component on the lower shell, the fixing component cooperates with the clamping structure to realize cross-fixation of the sensor, so that the sensor can be fixed more stably and firmly, thereby extending the service life of the sensor.

[0024] Furthermore, two adjacent clamping structures can be separated by the fixing seat on the fixing assembly, which can effectively prevent the conductive materials on adjacent clamping structures from contacting each other when coating the conductive material, thereby ensuring the safety of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to explain the embodiments of the utility model or the technical solutions in the prior art more clearly and easily, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. The drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the analyte detection device provided in the first embodiment of the utility model;

[0027] Figure 2 This is a disassembled diagram of the analyte detection device provided in the first embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of a sensor installation structure provided by an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the lower shell structure provided by the first embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the sensor structure provided by the first embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the circuit board structure provided in Embodiment 1 of the present utility model.

[0032] Reference numerals,

[0033] 11. Upper cover;

[0034] 12, lower shell; 121, first buckle; 122, second buckle; 123, sealing seat; 124, fixing seat; 125, slot; 126, sealing slot;

[0035] 13. sensor; 131. implantation part; 132. connection part; 133. contact point;

[0036] 14. Circuit board; 141. Clamping structure; 142. Notch; 143. Battery;

[0037] 15. Mounting seat. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] like Figure 1 As shown, this embodiment provides a fixed structure of an implantable sensor 13. The implantable sensor 13 can be implanted under the skin of a human body with the help of a needle aid. The electrodes on the sensor 13 react with the analyte to be measured to generate an electrical signal. The electrical signal is processed to obtain data related to the analyte to be measured. The implantable sensor 13 can be used to monitor the dynamic changes of blood sugar. However, it is not limited to this. The implantable sensor 13 can also be used to monitor other related targets such as lactate, acetylcholine, amylase, bilirubin, cholesterol, and chorionic gonadotropin.

[0043] Specifically, Figure 1 As shown, the fixed structure of the implantable sensor 13 includes a shell and the sensor 13 partially extending out of the shell. The shell is formed by an upper cover 11 and a lower shell 12 that are snap-fitted together, and its function is to protect the internal electronic components and the sensor 13.

[0044] The implantable sensor 13 is configured to be located under the skin of the human body for multiple consecutive days to continuously collect analyte signals, so high requirements are imposed on the installation and fixation of the sensor 13 and the signal connection of the sensor 13.

[0045] Further references Figure 2 A circuit board 14, a mounting seat 15, and a part of the sensor 13 are arranged inside the shell. The circuit board 14 is installed between the upper cover 11 and the lower shell 12 and is close to the lower shell 12; one end of the sensor 13 extends out of the shell and is implanted into the subcutaneous tissue of the human body to collect the target analyte signal of the human body, and the other end extends between the shell and the circuit board 14 to form a signal conduction, so that the collected target analyte signal can be transmitted to the processing module on the circuit board 14, and the processing module processes the target analyte signal.

[0046] like Figure 3 As shown, the sensor 13 includes an implantation part 131 and a connection part 132. The implantation part 131 extends out of the housing and is implanted into the subcutaneous tissue of the human body. A plurality of bioelectrodes are arranged on the implantation part 131. The enzymes on the bioelectrodes react with the target analyte according to the electrochemical principle to generate electrical signals. The connection part 132 is located in the housing, and is connected to the signal input terminal on the circuit board 14 and transmits the electrical signals collected on the implantation part 131 to the circuit board 14.

[0047] Continue to refer Figure 3 At least two contacts 133 are provided on one side of the connection portion 132, and the specific number of contacts 133 is related to the number of bioelectrodes on the implant portion 131. Of course, contacts 133 can also be provided on both sides of the connection portion 132 to transmit the electrical signal of the implant portion 131 to the circuit board 14.

[0048] In order to fix the sensor 13 and ensure that the sensor 13 will not become loose during use, refer to Figure 4 and Figure 5 A fixing assembly is arranged on the upper end surface of the lower shell 12, and the fixing assembly includes a plurality of fixing seats 124 arranged along the extending direction of the connecting portion 132. The fixing seats 124 are arranged vertically to the lower shell 12. A card slot 125 is recessed downwardly at the middle position of the top of the fixing seat 124. The width of the card slot 125 is equal to or less than the width of the connecting portion 132. The connecting portion 132 of the sensor 13 can be fixed by the card slot 125 to fix the sensor 13.

[0049] Continue to refer Figure 4 and Figure 5 A through hole is formed on the lower shell 12 for passing the sensor 13 and the implant needle. A sealing seat 123 is arranged around the through hole on the upper end surface of the lower shell 12. A sealing groove 126 is recessed on the upper end surface of the sealing seat 123. The sensor 13 extends out of the lower shell 12 from the side wall of the sealing seat 123 through the sealing groove 126. The slot hole on the side wall of the sealing seat 123 can be engaged with the end position of the fixed connecting portion 132. After the sensor 13 passes through the sealing groove 126, glue can be poured into the sealing groove 126, and the protrusion at the bottom of the mounting seat 15 is aligned and engaged with the sealing groove 126, thereby forming isolation between the connecting portion 132 of the sensor 13 and the implanting portion 131.

[0050] In order to achieve stable signal transmission between the sensor 13 and the circuit board 14, refer to Figure 4 and Figure 6 A fixing groove for engaging the connecting portion 132 is formed through the circuit board 14 . The width and length of the fixing groove match the specifications of the connecting portion 132 . The sensor 13 can be further connected and fixed through the fixing groove.

[0051] Continue to refer Figure 4 and Figure 6A plurality of independent clamping structures 141 are symmetrically provided on the circuit board 14 on both sides of the fixing groove, and a gap having the same thickness as the fixing seat 124 is provided between two adjacent clamping structures 141 on the same side. When the circuit board 14 is installed and fixed to the lower shell 12, the fixing seat 124 passes through the gap from bottom to top, thereby separating and making each clamping structure 141 independent, and at the same time, the circuit board 14 can be further fixed to ensure that the circuit board 14 can be fixed and stably in the shell.

[0052] Further references Figure 4 and Figure 6 In order to achieve signal connection between the connection portion 132 and the circuit board 14, after the circuit board 14 is installed on the lower shell 12, a conductive material is coated or welded on the clamping structure 141 corresponding to the contact 133 to form a transmission channel, one end of the transmission channel is connected to the contact 133 for receiving the electrical signal generated by the sensor 13, and the other end is connected to the circuit board 14 for transmitting the electrical signal to the signal processing module on the circuit board 14. Since the fixing seat 124 separates the clamping structures 141 from each other, it can be ensured that when the conductive material is coated or welded, the conductive materials on adjacent clamping structures 141 will not contact to form a short circuit.

[0053] This embodiment uses a method of coating conductive material to achieve signal connection between the contact 133 and the circuit board 14. The conductive material can be silver paste, copper paste or other materials. This method can not only ensure the stability of the signal connection between the sensor 13 and the circuit board 14, but also can further fix the sensor 13 after the conductive material cools down. After the user uses it for a long time or exercises, it can also ensure that the sensor 13 can be firmly fixed, thereby improving the stability of the signal.

[0054] In order to install and fix the circuit board 14 in the housing, refer to Figure 4 A plurality of first buckles 121 are protruding along the edge of the upper end surface of the lower shell 12. When the circuit board 14 is installed, the bottom of the circuit board 14 contacts the upper end surface of the lower shell 12, and the top is limited by the first buckles 121, thereby ensuring that the circuit board 14 can be fixed between the lower shell 12 and the first buckles 121. In addition, a battery 143 is installed on the upper end surface of the circuit board 14 through a fixing sheet, and the battery 143 provides power for the electronic components on the circuit board 14.

[0055] The housing has the function of protecting the internal circuit board 14 and the sensor 13. Figure 2 and Figure 4, a plurality of second buckles 122 are arranged along the outer edge of the upper end surface of the lower shell 12, and the upper cover 11 is provided with connecting grooves with the same number and corresponding positions as the second buckles 122, and the lower shell 12 and the upper cover 11 are connected to form a shell by engaging the connecting grooves with the second buckles 122. In order to ensure that the shell is more compact, a notch 142 for making way for the second buckle 122 can be opened on the circuit board 14, so that the second buckle 122 can pass through the circuit board 14. Obviously, the above embodiments of the utility model are only examples made to clearly illustrate the utility model, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An analyte detection device, comprising an upper cover and a lower shell connected to each other to form a housing, characterized in that: Also includes sensors and circuit boards; The sensor comprises an implantation portion and a connection portion, wherein the connection portion is fixed inside the housing by a fixing assembly; The circuit board is provided with a fixing groove for engaging the connecting part, and a plurality of clamping structures are provided on the circuit board on both sides of the fixing groove. The surface of the clamping structure and the connecting part are covered with conductive material to form a signal transmission path to achieve signal connection between the connecting part and the circuit board.

2. The analyte detection device according to claim 1, characterized in that The plurality of clamping structures are symmetrically arranged along two sides of the fixing groove, and surfaces of no less than two of the clamping structures are covered with conductive material.

3. The analyte detection device according to claim 2, characterized in that: A plurality of contacts corresponding to the electrodes on the implant part are arranged on one side or both sides of the connecting part, and the surface of the clamping structure corresponding to the position of the contacts is covered with conductive material to achieve contact with the contacts to form signal conduction.

4. The analyte detection device according to claim 1, characterized in that: The fixing assembly comprises a plurality of fixing seats arranged along the extending direction of the connecting portion, and the fixing seats are concavely provided with a clamping groove for clamping the connecting portion.

5. The analyte detection device according to claim 4, characterized in that: The fixing seat passes through the circuit board from bottom to top through the gap between two adjacent clamping structures.

6. The analyte detection device according to claim 1, characterized in that: The lower shell is provided with a through hole for passing the sensor, the upper end surface of the lower shell is provided with a sealing seat around the through hole, the upper end surface of the sealing seat is provided with a sealing groove, and the sensor extends out of the lower shell from the side wall of the sealing seat through the sealing groove.

7. The analyte detection device according to claim 6, characterized in that: A mounting seat is also provided in the shell, and a protrusion corresponding to the sealing groove is convexly provided on the lower end surface of the mounting seat. The bottom of the mounting seat is connected to the sealing seat by the protrusion engaging the sealing groove, and the top is sealed and connected to the lower end surface of the implant needle seat.

8. The analyte detection device according to claim 1, characterized in that: The upper end surface of the lower shell is provided with a plurality of first buckles, the bottom of the circuit board contacts the upper end surface of the lower shell, and the top is limited and fixed by the first buckles.

9. The analyte detection device according to claim 1, characterized in that: One of the lower shell or the upper cover is provided with a second buckle, and the other is provided with a connecting groove corresponding to the second buckle. The lower shell and the upper cover are connected to form a shell by engaging the connecting groove with the second buckle.

10. The analyte detection device according to claim 9, characterized in that: The circuit board is provided with a plurality of slots for passing the second buckles.

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