Analyte detection sensor system

Abstract

The utility model relates to an analyte detection sensor system, and belongs to the technical field of medical instruments. The sensor unit comprises a sensor probe, a conductive electrode, a battery, a bottom plate and a guide needle, the sensor probe is vertically connected with the conductive electrode, the sensor probe penetrates through the bottom plate, the conductive electrode and the battery to be arranged on the bottom plate, and a glue groove is formed in the periphery of the conductive electrode; the guide needle is coupled with the sensor probe and guides the sensor probe to be implanted into the skin; a connector unit for connecting the sensor unit and the transmitter unit; and the transmitter unit comprises a first conductive part and a second conductive part, the first conductive part is connected with the rigid part, and the second conductive part is connected with the battery. The excitation interval between the inner needle and the outer needle can be adjusted by controlling the pressing block, so that the excitation efficiency and stability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and in particular to an analyte detection sensor system. BACKGROUND

[0002] With the continuous development of medical technology, continuous health monitoring systems play an increasingly important role in disease management and health maintenance. For example, diabetic patients can take appropriate action by continuously monitoring glucose levels, such as administering insulin or ingesting specific food or beverages at appropriate times based on analyte levels or trends. Similarly, other analytes can be used to monitor different physiological conditions, or in some cases, multiple analytes can be used simultaneously to monitor multiple physiological conditions.

[0003] To achieve continuous monitoring, one or more sensors are typically implanted at least partially into the individual's tissue, such as the dermis, subcutaneously, or intravenously, to collect analyte data in the body. These implanted sensors can collect analyte data on demand, on a set schedule, or continuously, depending on the individual's specific health needs and / or previously measured analyte levels. However, traditional analyte detection sensor systems have some significant technical problems in design and function, affecting their reliability and accuracy.

[0004] Inadequate guidance accuracy: In the traditional structure, the movement of the sensor probe and the conductive electrode affects the guidance accuracy between the puncture needle and the sensor probe, causing the sensor probe to deviate from the puncture needle, thereby affecting the correct implantation of the sensor and the accuracy of the data.

[0005] Unreliable contact method: The contact method between the connector spring sheet and the electrode is unreliable, which can cause unstable signal transmission, thereby affecting the stability and accuracy of the detection results.

[0006] Poor waterproof performance: The waterproof performance of the traditional analyte detection sensor system is unreliable, and the poor sealing can cause liquid to seep in, affecting the accuracy of the detection data and even damaging the internal electronic components.

[0007] The above problems limit the performance and reliability of the traditional analyte detection sensor system. SUMMARY

[0008] Therefore, the present application provides an analyte detection sensor system to improve the guidance accuracy, contact reliability, and waterproof performance of the sensor, thereby ensuring the stability and accuracy of the continuous health monitoring system.

[0009] To solve the above problems, the present application provides an analyte detection sensor system, comprising:

[0010] A sensor unit, comprising a sensor probe, a conductive electrode, a battery, a bottom plate and a guide needle, the sensor probe is connected perpendicularly to the conductive electrode, the sensor probe penetrates through the bottom plate, the conductive electrode and the battery are placed on the bottom plate, and a glue groove is arranged around the conductive electrode; the guide needle is coupled with the sensor probe to guide the implantation of the sensor probe into the skin;

[0011] A connector unit for connecting the sensor unit and a transmitter unit; the connector unit comprises a base and at least one metal spring, the metal spring comprises a flexible part and a rigid part, the flexible part is connected with the conductive electrode; the metal spring is placed on the base, the base comprises a proximal end surface and a distal end surface, the proximal end surface is in contact with the transmitter unit, and the distal end surface is located in the glue groove and is fixed with the bottom plate after glue dispensing, thereby sealing the flexible part and the conductive electrode;

[0012] The transmitter unit comprises a first conductive part and a second conductive part, the first conductive part is connected with the rigid part, and the second conductive part is connected with the battery; a flexible first sealing part is arranged around the first conductive part, and a flexible second sealing part is arranged around the second conductive part.

[0013] Further, after the transmitter unit is buckled with the sensor unit, the flexible first sealing part is in contact with the proximal end surface and is compressed, thereby achieving the sealing of the sensor probe; the flexible second sealing part is in contact with the bottom plate and is compressed, thereby achieving the sealing of the battery.

[0014] Further, it further comprises an applicator assembly for guiding the sensor unit to the skin.

[0015] Further, the transmitter unit further comprises a signal processing unit for receiving the biological information sent by the sensor unit, processing the biological information and sending it to the outside world.

[0016] Further, the conductive electrode is perpendicular to the bottom plate and is clamped between the key groove and the bottom plate, the electrode contact is located on the side surface of the conductive electrode, the flexible part is arranged on both sides of the conductive electrode and is in contact with the electrode contact.

[0017] Further, the base is made of plastic material, the metal spring is pre-embedded in the base, and the flexible part and the rigid part are sealed by the glue groove and the flexible first sealing part, respectively.

[0018] Further, the sensor unit further comprises a first lock and a second lock, and the transmitter unit further comprises a first lock groove and a second lock groove;

[0019] The transmitter unit is buckled with the sensor unit, the first lock catch is buckled with the first lock slot, and the second lock catch is buckled with the second lock slot.

[0020] A wrench is arranged on the first lock catch and / or the second lock catch, and the wrench is pulled to realize the disassembly of the transmitter unit and the sensor unit.

[0021] Further, the sensor unit further comprises adhesive tape, which comprises a first adhesive surface connected with the bottom plate and a second adhesive surface connected with the skin.

[0022] Further, the applicator assembly comprises:

[0023] The driving unit is initially in a preloaded state;

[0024] The pressing unit is pressed to release the potential energy of the driving unit;

[0025] The sensor unit comprises a sensor probe and a guide needle, the guide needle is coupled with the sensor probe to guide the sensor probe to be implanted into the skin;

[0026] The motion unit moves the sensor unit to the skin under the pushing of the driving unit;

[0027] The needle withdrawal unit is initially in an unloaded state, at least a part of which is coupled with the motion unit and at least a part of which is coupled with the guide needle;

[0028] During the movement of the motion unit to the skin, the needle withdrawal unit is continuously loaded until the sensor unit reaches the implantation position of the skin, the coupling states of the needle withdrawal unit with the motion unit and the sensor unit are broken; the sensor unit stays on the skin, the guide needle guides the sensor probe to be implanted into the skin, the potential energy of the loaded needle withdrawal unit is released, and then the needle withdrawal unit moves the guide needle away from the skin.

[0029] Further, an inner shell is further included, the inner shell comprises an inner shell sleeve and an inner shell claw; the pressing unit is arranged outside the inner shell sleeve and abuts against the inner shell claw;

[0030] The needle withdrawal unit comprises a needle withdrawal spring and a needle withdrawal seat, the initial state of the needle withdrawal spring is a free state, one end of the needle withdrawal spring is in contact with the inner wall of the inner shell sleeve, and the other end is in contact with the needle withdrawal seat;

[0031] The bottom of the needle withdrawal seat is connected with the sensor unit.

[0032] Further, the motion unit comprises a motion seat claw hook and a motion seat clamping arm; one end of the inner shell claw is provided with an inner shell claw hook.

[0033] Initial state, the motion seat clamping arm is clamped on the needle withdrawing seat and is placed in the inner shell sleeve as a whole; the motion unit is abutted at the bottom of the needle withdrawing seat, the motion seat clamping hook is clamped with the inner shell clamping hook, and the guide needle passes through the needle withdrawing seat; one end of the driving unit is in contact with the outer wall of the inner shell sleeve, and the other end is in contact with the motion unit;

[0034] When the pressing unit acts, the inner shell clamping claw is pressed, and then the motion seat clamping hook and the inner shell clamping hook are uncoupled; the driving unit drives the motion unit to drive the needle withdrawing seat to move synchronously in the direction of the skin, and the needle withdrawing spring continuously stores elastic potential energy; when the motion unit drives the sensor unit to reach the skin position, the sensor unit leaves the bottom of the needle withdrawing seat and stays on the skin, and the guide needle guides the sensor probe to be implanted into the skin.

[0035] The motion seat clamping arm is separated from the inner shell sleeve, and then the motion seat clamping arm and the needle withdrawing seat are uncoupled; the elastic potential energy of the needle withdrawing spring drives the needle withdrawing seat to move away from the skin, and then the needle withdrawing seat drives the guide needle to move away from the skin.

[0036] Further, the upper shell, the lower shell, the first sealing element and the second sealing element are further included.

[0037] The pressing unit and the inner shell are placed in the upper shell, and the first sealing element is arranged between one end of the pressing unit and the upper shell; the support rib is arranged in the lower shell.

[0038] In the initial state, the upper shell and the lower shell are sealed by the second sealing element, so that a sealed cavity is formed between the upper shell and the lower shell; the support rib in the lower shell is coupled with the other end of the pressing unit, and the pressing unit is limited; after the lower shell is removed, the support rib in the lower shell is decoupled from the other end of the pressing unit, the pressing unit is triggered, and the sensor unit can be fired.

[0039] Compared with the prior art, the utility model has the following beneficial effects:

[0040] The utility model discloses conductive electrode is perpendicular to bottom plate, and with the key groove type joint between bottom plate, electrode contact point is located conductive electrode side, and the elastic part is distributed in the both sides of conductive electrode, and with electrode contact point contact. One, improve the guide accuracy: the utility model discloses through the guide structure of puncture needle and sensor probe optimization, the risk of deviation of sensor probe in the implantation process is reduced significantly, ensure that sensor can accurately, stably implant target tissue (such as dermis, subcutaneous or intravenous), thereby improved the reliability of monitoring data. Two, enhance the contact reliability: the utility model discloses the contact mode between connector spring piece and electrode, adopt more stable connection design, ensure the continuity and stability of signal transmission, avoid the data fluctuation or error caused by the poor contact in traditional structure, significantly improve the accuracy of detection result. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is sensor unit structure schematic diagram in the utility model embodiment;

[0042] Figure 2 It is sensor unit and guide needle cooperation relation schematic diagram in the utility model embodiment;

[0043] Figure 3 It is connector unit structure schematic diagram in the utility model embodiment;

[0044] Figure 4 It is transmitter unit structure schematic diagram in the utility model embodiment;

[0045] Figure 5 It is sensor unit and transmitter unit cooperation relation schematic diagram in the utility model embodiment;

[0046] Figure 6 It is sensor unit and transmitter unit assembly schematic diagram in the utility model embodiment;

[0047] Figure 7 It is sensor unit and connector unit and transmitter unit assembly schematic diagram in the utility model embodiment;

[0048] Fig. 8 (a) is the structure schematic diagram of the applicator assembly state 1 of an embodiment of the utility model;

[0049] Fig. 8 (b) is the structure schematic diagram of the applicator assembly state 2 of an embodiment of the utility model;

[0050] Fig. 8 (c) is the structure schematic diagram of the applicator assembly state 3 of an embodiment of the utility model;

[0051] Fig. 8 (d) is the structure schematic diagram of the applicator assembly state 4 of an embodiment of the utility model;

[0052] Figure 9An embodiment of the utility model discloses a plasterer assembly external shape structure explosion map;

[0053] Fig. 10 (a) is another embodiment of the utility model plasterer assembly state 1 structure schematic diagram;

[0054] Fig. 10 (b) is another embodiment of the utility model plasterer assembly state 2 structure schematic diagram;

[0055] Fig. 10 (c) is another embodiment of the utility model plasterer assembly state 3 structure schematic diagram;

[0056] Among them: drive unit 1, pressing unit 2, sensor unit 3, sensor probe 31, guide needle 32, first lock 33 and second lock 34, wrench 35, movement unit 4, movement seat clamping hook 41, movement seat clamping arm 42, inner shell 5, inner shell sleeve 51, inner shell clamping jaw 52, inner shell clamping hook 521, needle withdrawal spring 61, needle withdrawal seat 62, upper outer shell 71, first sealing member 711, lower outer shell 72, second sealing member 712, conductive electrode 311, battery 312, bottom plate 313, glue groove 314, adhesive tape 315, first adhesive surface 3151, second adhesive surface 3152, connector unit 21, base 211, proximal end surface 2111, distal end surface 2112, metal spring 212, elastic part 2121, rigid part 2122, transmitter unit 11, first conductive part 111, elastic first sealing part 1111, second conductive part 112, elastic second sealing part 1121, first lock slot 113, second lock slot 114. DETAILED DESCRIPTION

[0057] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application.

[0058] The analyte detection sensor system provided by the embodiments of the application comprises:

[0059] The sensor unit 3, as shown in Figure 5 、 Figure 1 and Figure 2 , comprises a sensor probe 31, a conductive electrode 311, a battery 312, a bottom plate 313 and a guide needle 32, the sensor probe 31 is connected perpendicularly to the conductive electrode 311, the sensor probe 31 passes through the bottom plate 313, the conductive electrode 311 and the battery 312 are arranged on the bottom plate 313, and a glue groove 314 is arranged around the conductive electrode 311; the guide needle 32 is coupled to the sensor probe 31 and guides the sensor probe 31 to be implanted into the skin;

[0060] Explained, the sensor probe 31 passes through the base plate 313 to ensure accurate implantation under the skin and collection of target physiological data such as blood glucose. The sensor probe 31 is made of biocompatible materials, such as polymers, to ensure its safety to the human body and stability during long-term use. Exemplarily, micropores or microgrooves are designed on the surface of the sensor probe 31 to improve the sensitivity and accuracy of signal acquisition.

[0061] Explained, the conductive electrode 311 is perpendicularly connected to the sensor probe 31 to ensure the shortest signal transmission path and reduce signal attenuation and interference. The electrode contacts are located on both sides of the conductive electrode 311, which can better shield external electromagnetic interference, improve the signal-to-noise ratio, and reduce direct contact with the skin.

[0062] Explained, the adhesive groove 314 is located around the conductive electrode 311 and is used to fill the sealant to ensure a firm and sealed connection between the conductive electrode 311 and the base plate 313, thereby improving waterproof performance.

[0063] Connector unit 21, such as Figure 2 As shown in Figure 3, the connector unit 21 is used to connect the sensor unit 3 and the transmitter unit 11. The connector unit 21 includes a base 211 and at least one metal spring 212. The metal spring 212 includes an elastic part 2121 and a rigid part 2122. The elastic part 2121 is connected to the conductive electrode 311. The metal spring 212 is placed on the base 211. The base 211 includes a proximal end face 2111 and a distal end face 2112. The proximal end face 2111 contacts the transmitter unit 11, and the distal end face 2111 is located in the glue groove 314. After glue is applied, it is fixed to the base plate 313 to seal the elastic part 2121 and the conductive electrode 311.

[0064] For example, the distal end face 2112 is located within the adhesive groove 314 and is fixed to the base plate 313 by dispensing adhesive, ensuring a firm and sealed connection between the connector unit 21 and the sensor unit 3. For example, a guide groove or recess can be designed on the distal end face 2112 to facilitate uniform distribution of adhesive and improve the sealing effect.

[0065] For example, the elastic part 2121 is made of a highly elastic material, such as phosphor bronze or beryllium copper, to ensure that it can maintain good elasticity after multiple connection and disconnection.

[0066] Explained, the rigid part 2122 supports the elastic part 2121, ensuring that the metal spring 212 does not undergo permanent deformation when subjected to force. The rigid part 2122 is fixed to the base 211, ensuring the stability of the position of the metal spring 212.

[0067] Preferably, the contact surface of the metal spring 212 is plated, such as with gold or silver, to improve its conductivity and corrosion resistance.

[0068] Explained, the physiological data collected by the sensor probe 31 is transmitted to the metal spring 212 via the conductive electrode 311, and then to the transmitter unit 11 via the connector unit 21.

[0069] Transmitter unit 11, such as Figure 4 As shown, the device includes a first conductive part 111 and a second conductive part 112. The first conductive part 111 is connected to the rigid part 2122, and the second conductive part 112 is connected to the battery 312. An elastic first sealing part 1111 is provided around the first conductive part 111, and an elastic second sealing part 1121 is provided around the second conductive part 112. After the transmitter unit 11 and the sensor unit 3 are fastened together, the elastic first sealing part 1111 contacts the proximal end face 2111 and is compressed to seal the sensor probe 31. The elastic second sealing part 1121 contacts the base plate 313 and is compressed to seal the battery 312.

[0070] For example, the first conductive part 111 is designed as a flat or needle-like structure to facilitate close contact with the rigid part 2122 and reduce contact resistance. The elastic first sealing part 1111 is located around the first conductive part 111 and is made of a material with elastic properties such as silicone or rubber. After the transmitter unit 11 and the sensor unit 3 are engaged, the elastic first sealing part 1111 contacts the proximal end face 2111 and is compressed to seal the sensor probe 31 and prevent moisture, dust, etc. from entering.

[0071] For example, the second conductive part 112 is designed as a spring pin or elastic contact structure to facilitate close contact with the battery 312 and reduce contact resistance. The elastic second sealing part 1121 is located around the second conductive part 112 and is made of a material with elastic properties such as silicone or rubber. After the transmitter unit 11 and the sensor unit 3 are engaged, the elastic second sealing part 1121 contacts the base plate 313 and is compressed to seal the battery 312 and prevent moisture, dust, etc. from entering.

[0072] By employing the above embodiments, on the one hand, the risk of sensor probe deviation during implantation is reduced, ensuring that the sensor can be accurately and stably implanted into the target tissue, such as the dermis, subcutaneous tissue, or vein, thereby improving the reliability of monitoring data. On the other hand, the improved contact method between the connector spring and the electrode ensures the continuity and stability of signal transmission, avoiding data fluctuations or errors caused by poor contact in traditional structures, and significantly improving the accuracy of detection results.

[0073] As one embodiment, it also includes an applicator assembly that directs the sensor unit 3 toward the skin.

[0074] As one embodiment, the transmitter unit 11 further includes a signal processing unit, which receives the biological information sent by the sensor unit 3, processes the biological information, and sends it to the outside world.

[0075] As an embodiment, the conductive electrode 311 is perpendicular to the bottom plate 313 and is clamped by a key groove with the bottom plate 313, the electrode contact is located on the side of the conductive electrode 311, and the elastic part 2121 is distributed on both sides of the conductive electrode 311 and is in contact with the electrode contact. Exemplarily, the proximal end face 2111 is designed with a positioning structure such as a protrusion or a groove to ensure accurate and stable connection with the transmitter unit 11 and prevent relative sliding.

[0076] As an embodiment, the base 211 is made of plastic, and the metal spring 212 is embedded in the base 211, and the elastic part 2121 and the rigid part 2122 are respectively sealed by the glue groove 314 and the elastic first sealing part 1111.

[0077] As an explanation, the base 211 is made of high-strength and corrosion-resistant engineering plastic, such as POM, PC or ABS, to ensure its mechanical strength and durability. In addition, the plastic material has good insulation performance, which can effectively isolate the metal spring 212 from the external environment and prevent short circuit.

[0078] As an embodiment, the sensor unit 3 further comprises a first lock 33 and a second lock 34, and the transmitter unit 11 further comprises a first lock groove 113 and a second lock groove 114; after the transmitter unit 11 is buckled with the sensor unit 3, the first lock 33 is buckled with the first lock groove 113, and the second lock 34 is buckled with the second lock groove 114; a wrench 35 is arranged on the first lock and / or the second lock, and the wrench 35 is pulled to realize the disassembly between the transmitter unit 11 and the sensor unit 3.

[0079] As an embodiment, the sensor unit further comprises a plaster 315, which comprises a first adhesive surface 3151 connected with the bottom plate 313 and a second adhesive surface 3152 adhered to the skin.

[0080] As an embodiment, the applicator assembly comprises:

[0081] Specifically, as shown in FIG. 8(a), it comprises:

[0082] The driving unit 1 is initially in a preloaded state and can provide elastic potential energy;

[0083] The pressing unit 2 is pressed to release the elastic potential energy of the driving unit 1;

[0084] The sensor unit 3 comprises a sensor probe 31 and a guide needle 32, the guide needle 32 is coupled with the sensor probe 31 to guide the sensor probe 31 to be implanted into the skin;

[0085] The motion unit 4 moves towards the skin with the sensor unit 3 under the pushing of the driving unit 1;

[0086] The needle withdrawing unit is initially in an unloaded state, at least a part of which is coupled with the moving unit 4, and at least a part of which is coupled with the guide needle 32.

[0087] During the movement of the moving unit 4 to the skin, the needle withdrawing unit is continuously loaded, until the sensor unit 3 reaches the implantation position of the skin, the coupling state of the needle withdrawing unit with the moving unit 4 and the sensor unit 3 is broken, as shown in Fig. 8(c), the sensor unit 3 stays on the skin, the guide needle 32 guides the sensor probe 31 to be implanted into the skin, the potential energy of the loaded needle withdrawing unit is released, and then the needle withdrawing unit moves with the guide needle 32 away from the skin, as shown in Fig. 8(d).

[0088] As an embodiment of the present application, the driving unit 1 is provided with a spring, and the spring is in a preloaded state. Figure 9 Further comprising an upper shell 71, a lower shell 72, a first sealing member 711 and a second sealing member 712;

[0089] The pressing unit 2 and the inner shell 5 are placed in the upper shell 71, and the first sealing member 711 is arranged between one end of the pressing unit 2 and the upper shell 71; the support rib is arranged in the lower shell 72;

[0090] In the initial state, the upper shell 71 and the lower shell 72 are sealed by the second sealing member 712, so that a sealed cavity is formed between the upper shell 71 and the lower shell 72, and the cavity is sterilized by irradiation or other means to provide a sterile environment and block the spread of microorganisms; the support rib in the lower shell 72 is coupled with the other end of the pressing unit 2, and the pressing unit 2 is limited in position; after the lower shell 72 is removed, the support rib in the lower shell 72 is decoupled with the other end of the pressing unit 2, the pressing unit 2 is excited, and the sensor unit 3 can be attached to the human skin.

[0091] The traditional spring is prone to performance degradation in a long-term compressed state, resulting in untimely or unstable needle withdrawal. The applicator assembly provided by the embodiment of the present application releases potential energy only after the sensor probe is implanted into the skin through the dynamic loading mechanism of the needle withdrawing unit, so as to ensure that the guide needle can be timely and stably withdrawn from the skin. This design significantly improves the reliability and service life of the device.

[0092] As an embodiment of the present application, the driving unit 1 adopts a high-precision spring or elastic material to ensure that sufficient elastic potential energy can be stably stored in a preloaded state. By optimizing the material and structural design of the spring, fatigue and performance degradation caused by long-term compression are avoided.

[0093] As an embodiment of the present application, as shown in Figure 8(b), the preloading force of the driving unit 1 can be adjusted to adapt to the needs of different skin thicknesses or implantation depths. Illustratively, a mechanism with adjustable spring pre-tightening force is used in the driving unit 1, and the preloading force is adjusted by rotating or sliding the adjustment component to change the compression amount of the spring.

[0094] As an embodiment of the present application, the pressing unit 2 is equipped with a safety locking device to prevent accidental or accidental pressing from causing the potential energy of the driving unit 1 to be released prematurely, ensuring the safety of the device in the unused state. The safety locking device is preferably a lower housing provided at the bottom of the pressing unit 2, which can block the trigger process of the pressing unit 2 before work.

[0095] As an embodiment of the present application, the movement unit 4 is driven by the driving unit 1, using a linear guide rail or low-friction sliding mechanism to ensure smooth and stable movement towards the skin, avoiding additional damage to the skin. The movement speed of the movement unit 4 is optimized to avoid impact caused by excessive speed and to avoid affecting the implantation efficiency caused by slow speed.

[0096] Illustratively, a mechanical limiting structure is designed on the movement unit 4 to ensure that it can automatically stop when it reaches the implantation position of the skin, avoiding damage to the skin caused by excessive movement, and preferably cooperating with the inner shell sleeve to achieve limiting.

[0097] As an embodiment of the present application, it also includes an inner shell 5, which includes an inner shell sleeve 51 and an inner shell claw 52; the pressing unit 2 is placed outside the inner shell sleeve 51 and abuts on the inner shell claw 52.

[0098] Illustratively, the inner shell sleeve 51 is made of high-strength, lightweight materials such as aluminum alloy or engineering plastics to ensure its mechanical strength while reducing overall weight. A guide groove or guide rail is designed inside the sleeve inner shell sleeve 51 to guide the movement of the pressing unit 2 and the driving unit 1, ensuring the stability and accuracy of the operation process.

[0099] Illustratively, the inner shell claw 52 is designed as a flexible structure that can deform within a certain range to ensure that the pressing unit 2 can smoothly trigger the potential energy release of the driving unit 1 when pressed. The elastic material of the inner shell claw 52 is preferably high-performance plastic to ensure its reliability.

[0100] Illustratively, the contact surface of the pressing unit 2 and the inner shell claw 52 is designed as an arc or an inclined surface to ensure that the pressing force can be evenly transmitted, avoiding wear or damage caused by local stress concentration.

[0101] As an embodiment of the present application, the needle withdrawal unit comprises a needle withdrawal spring 61 and a needle withdrawal seat 62. The needle withdrawal spring 61 is in a free state in the initial state, and one end of the needle withdrawal spring 61 is in contact with the inner wall of the inner shell sleeve 51, and the other end is in contact with the needle withdrawal seat 62.

[0102] As a preferred embodiment, the needle withdrawal spring 61 is designed as a tension spring, as shown in the figure. The needle withdrawal spring 61 is in a free state in the initial state, and one end is fixed to the inner wall of the inner shell sleeve 51, and the other end is connected to the needle withdrawal seat 62. During the movement of the movement unit 4 to the skin, the needle withdrawal seat 62 is pulled, and the tension spring is gradually stretched and stores potential energy; when the sensor unit 3 reaches the implantation position, the potential energy of the tension spring is released, driving the needle withdrawal seat 62 and the guide needle 32 to quickly withdraw. Figures 8(a)-8(d)

[0103] As another preferred embodiment, the needle withdrawal spring 61 is designed as a compression spring, as shown in the figure. The needle withdrawal spring 61 is in a free state in the initial state, and one end is fixed to the inner wall of the inner shell sleeve 51, and the other end is connected to the needle withdrawal seat 62. During the movement of the movement unit 4 to the skin, the needle withdrawal spring 61 is gradually compressed and stores potential energy; when the sensor unit 3 reaches the implantation position, the potential energy of the needle withdrawal spring 61 is released, driving the needle withdrawal seat 62 and the guide needle 32 to quickly withdraw. Figures 10(a)-10(c)

[0104] With the above preferred embodiments, on the one hand, the performance degradation problem caused by the long-term compression of the traditional spring is avoided, and on the other hand, the problem of premature needle withdrawal caused by the potential energy of the spring is effectively avoided, thereby reducing the potential medical risks caused by needle withdrawal failure or premature needle withdrawal.

[0105] As an embodiment of the present application, the movement unit 4 comprises a movement seat clamping hook 41 and a movement seat clamping arm 42; one end of the inner shell clamping jaw 52 is provided with an inner shell clamping hook 521.

[0106] In the initial state, the movement seat clamping arm 42 is clamped on the needle withdrawal seat 62, and is placed in the inner shell sleeve 51 as a whole; the movement unit 4 is abutted at the bottom of the needle withdrawal seat 62, the movement seat clamping hook 41 is clamped with the inner shell clamping hook 521, and the guide needle 32 passes through the needle withdrawal seat 62; one end of the drive unit 1 is in contact with the outer wall of the inner shell sleeve 51, and the other end is in contact with the movement unit 4. Through the precise cooperation of the movement seat clamping hook 41 and the inner shell clamping hook 521, the movement of the movement unit 4 is stable.

[0107] ​​When the pressing unit 2 is pressed, the inner shell clamping hook 52 is pressed, and the movement seat clamping hook 41 and the inner shell clamping hook 521 are disengaged; the driving unit 1 drives the movement unit 4 to drive the needle withdrawal seat 62 to move synchronously towards the skin, and the needle withdrawal spring 61 continuously stores elastic potential energy; when the movement unit 4 drives the sensor unit 3 to reach the skin position, the sensor unit 3 is away from the bottom of the needle withdrawal seat 62 and stays on the skin, the guide needle 32 guides the sensor probe 31 to be implanted into the skin, the movement seat clamping arm 42 is out of the inner shell sleeve 51, and then the movement seat clamping arm 42 and the needle withdrawal seat 62 are disengaged; the elastic potential energy of the needle withdrawal spring 61 drives the needle withdrawal seat 62 to move away from the skin, and then the needle withdrawal seat 62 drives the guide needle 32 to withdraw from the skin. The user only needs to press the pressing unit 2, and a series of operations of driving, moving and withdrawing the needle can be automatically completed, which simplifies the operation process and improves the user experience.

[0108] Exemplarily, in use, the action process of the applicator assembly is as follows:

[0109] Remove the lower shell 72, and stick the bottom of the remaining applicator assembly to the skin;

[0110] Press the pressing unit 2, and the inner shell clamping hook 521 is expanded outwardly;

[0111] The driving unit 1 pushes the movement unit 4 with the sensor unit 3 to move towards the skin;

[0112] The needle withdrawal seat 62 is held by the movement seat clamping arm 42 and moves together with the movement unit 4;

[0113] The needle withdrawal spring 61 is initially in a free state, and as the needle withdrawal seat 62 moves towards the skin, the needle withdrawal spring 61 is stretched to have potential energy;

[0114] In the first half of the movement, the movement seat clamping arm 42 is held by the inner shell sleeve 51 and cannot be deformed, the needle withdrawal seat 62 is held by the movement seat clamping arm 42, and the needle withdrawal spring 61 is continuously stretched;

[0115] When the movement unit 4 drives the sensor unit 3 to reach the skin position, the movement seat clamping arm 42 is out of the inner shell sleeve 51;

[0116] The potential energy of the needle withdrawal spring 61 pulls the needle withdrawal seat 62 to move away from the skin, the movement seat clamping arm 42 is deformed to make the needle withdrawal seat 62 out of the movement unit 4, and then the needle withdrawal is continuously completed.

[0117] It should be noted that in this application, the term "comprising" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a method, article or apparatus that comprises a list of elements does not only include those elements but can also include other elements not expressly listed or inherent to such method, article or apparatus. Without more limitations, the element defined by the statement "comprising" does not exclude the presence of additional identical elements in the method, article or apparatus comprising the element.

[0118] In the description of the present application, the words such as setting, installing, connecting and the like should be understood in a broad sense unless otherwise explicitly limited, and the specific meaning of the above words in the present application can be reasonably determined by those skilled in the art in combination with the specific content of the technical solutions.

[0119] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0120] In the present application, specific examples are applied to describe the principles and implementation modes of the present application, and the above embodiment description is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary skilled in the art, various modifications, combinations, sub-combinations and substitutions can be made without departing from the principles of the present application. Any modification, equivalent substitution and improvement within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An analyte detection sensor system, characterized in that, include: The sensor unit (3) includes a sensor probe (31), a conductive electrode (311), a battery (312), a base plate (313), and a guide pin (32). The sensor probe (31) is perpendicularly connected to the conductive electrode (311). The sensor probe (31) passes through the base plate (313). The conductive electrode (311) and the battery (312) are placed on the base plate (313), and a glue groove (314) is provided around the conductive electrode (311). The guide pin (32) is coupled to the sensor probe (31) to guide the sensor probe (31) to be implanted into the skin. A connector unit (21) is used to connect the sensor unit (3) and the transmitter unit (11); the connector unit (21) includes a base (211) and at least one metal spring (212), the metal spring (212) includes an elastic part (2121) and a rigid part (2122), the elastic part (2121) is connected to the conductive electrode (311); the metal spring (212) is placed on the base (211), the base (211) includes a proximal end face (2111) and a distal end face (2112), the proximal end face (2111) is in contact with the transmitter unit (11), the distal end face (2111) is located in the glue groove (314), and after glue is applied, it is fixed to the base plate (313) to seal the elastic part (2121) and the conductive electrode (311); The transmitter unit (11) includes a first conductive part (111) and a second conductive part (112). The first conductive part (111) is connected to the rigid part (2122), and the second conductive part (112) is connected to the battery (312). An elastic first sealing part (1111) is provided around the first conductive part (111), and an elastic second sealing part (1121) is provided around the second conductive part (112).

2. The analyte detection sensor system as described in claim 1, characterized in that, After the transmitter unit (11) and the sensor unit (3) are engaged, the elastic first sealing part (1111) contacts the proximal end face (2111) and is compressed to seal the sensor probe (31); the elastic second sealing part (1121) contacts the base plate (313) and is compressed to seal the battery (312).

3. The analyte detection sensor system as described in claim 1, characterized in that, It also includes an applicator assembly that directs the sensor unit (3) toward the skin.

4. The analyte detection sensor system as described in claim 1, characterized in that, The transmitter unit (11) also includes a signal processing unit, which receives the biological information sent by the receiving sensor unit (3), processes the biological information, and sends it to the outside world.

5. The analyte detection sensor system as described in claim 2, characterized in that, The conductive electrode (311) is perpendicular to the base plate (313) and is keyed to the base plate (313). The electrode contact is located on the side of the conductive electrode (311). The elastic part (2121) is distributed on both sides of the conductive electrode (311) and contacts the electrode contact.

6. The analyte detection sensor system as described in claim 2, characterized in that, The base (211) is made of plastic, and the metal spring (212) is embedded in the base (211). The elastic part (2121) and the rigid part (2122) are sealed by the glue groove (314) and the elastic first sealing part (1111), respectively.

7. The analyte detection sensor system as described in claim 1, characterized in that, The sensor unit (3) further includes a first latch (33) and a second latch (34), and the transmitter unit (11) further includes a first locking groove (113) and a second locking groove (114); After the transmitter unit (11) and the sensor unit (3) are engaged, the first latch (33) engages with the first locking groove (113), and the second latch (34) engages with the second locking groove (114); A wrench (35) is provided on the first latch and / or the second latch. By pulling the wrench (35), the transmitter unit (11) and the sensor unit (3) can be disassembled.

8. The analyte detection sensor system as described in claim 1, characterized in that, The sensor unit also includes adhesive tape (315), which includes a first adhesive surface (3151) connected to the base plate (313) and a second adhesive surface (3152) for bonding to the skin.

9. The analyte detection sensor system as described in claim 3, characterized in that, The applicator assembly includes: The drive unit (1) is initially in a preloaded state; Pressing the pressing unit (2) releases the potential energy of the driving unit (1). The sensor unit (3) includes a sensor probe (31) and a guide pin (32), wherein the guide pin (32) is coupled to the sensor probe (31) to guide the sensor probe (31) to be implanted into the skin; The motion unit (4), driven by the drive unit (1), moves the sensor unit (3) toward the skin; The needle withdrawal unit is initially in an unloaded state, at least a portion of which is coupled to the motion unit (4) and at least a portion of which is coupled to the guide needle (32); During the movement of the motion unit (4) toward the skin, the needle withdrawal unit is continuously loaded until the sensor unit (3) reaches the implantation position on the skin. At this point, the coupling state between the needle withdrawal unit, the motion unit (4), and the sensor unit (3) is broken. The sensor unit (3) remains on the skin, and the guide needle (32) guides the sensor probe (31) to be implanted into the skin. The potential energy loaded on the needle withdrawal unit is released, and the needle withdrawal unit moves away from the skin along with the guide needle (32).

10. The analyte detection sensor system as described in claim 9, characterized in that, It also includes an inner shell (5), which includes an inner shell sleeve (51) and an inner shell claw (52); the pressing unit (2) is placed outside the inner shell sleeve (51) and abuts against the inner shell claw (52); The needle removal unit includes a needle removal spring (61) and a needle removal seat (62). The needle removal spring (61) is initially in a free state. One end of the needle removal spring (61) is in contact with the inner wall of the inner shell sleeve (51), and the other end is in contact with the needle removal seat (62). The bottom of the needle removal seat (62) is connected to the sensor unit (3).

11. The analyte detection sensor system as described in claim 9, characterized in that, The motion unit (4) includes a motion seat hook (41) and a motion seat arm (42); one end of the inner shell claw (52) is provided with an inner shell hook (521); In the initial state, the motion seat arm (42) is engaged with the needle removal seat (62) and is placed entirely in the inner shell sleeve (51); the motion unit (4) abuts against the bottom of the needle removal seat (62), the motion seat hook (41) engages with the inner shell hook (521), and the guide needle (32) passes through the needle removal seat (62); one end of the drive unit (1) contacts the outer wall of the inner shell sleeve (51), and the other end contacts the motion unit (4); When the pressing unit (2) is activated, the inner shell claw (52) is pressed, thereby disengaging the motion seat hook (41) from the inner shell hook (521); the driving unit (1) drives the motion unit (4) to move the needle withdrawal seat (62) synchronously toward the skin, and the needle withdrawal spring (61) continuously stores elastic potential energy; when the motion unit (4) drives the sensor unit (3) to the skin position, the sensor unit (3) leaves the bottom of the needle withdrawal seat (62) and stays on the skin, and the guide needle (32) guides the sensor probe (31) to be implanted into the skin; The motion seat arm (42) disengages from the inner shell sleeve (51), thereby releasing the engagement between the motion seat arm (42) and the needle withdrawal seat (62); the elastic potential energy of the needle withdrawal spring (61) drives the needle withdrawal seat (62) to move away from the skin, thereby causing the needle withdrawal seat (62) to withdraw the guide needle (32) from the skin.

12. The analyte detection sensor system according to any one of claims 1-11, characterized in that, It also includes an upper outer shell (71), a lower outer shell (72), a first seal (711), and a second seal (712); The pressing unit (2) and the inner shell (5) are placed in the upper outer shell (71), and the first sealing element (711) is provided between one end of the pressing unit (2) and the upper outer shell (71); the lower outer shell (72) is provided with supporting ribs; In the initial state, the upper outer shell (71) and the lower outer shell (72) are sealed by the second sealing member (712), forming a sealed cavity between the upper outer shell (71) and the lower outer shell (72); the support rib in the lower outer shell (72) is coupled to the other end of the pressing unit (2), and the pressing unit (2) is limited; after the lower outer shell (72) is removed, the support rib in the lower outer shell (72) is decoupled from the other end of the pressing unit (2), the pressing unit (2) is activated, and the sensor unit (3) can be fired.

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