Applicator assembly and analyte detection sensor system

Abstract

The invention relates to an applicator assembly, and belongs to the technical field of medical instruments. Comprising a driving unit which is initially in a preloading state; the potential energy of the driving unit can be released by pressing the pressing unit; the sensor unit comprises a sensor probe and a guide needle, and the guide needle is coupled with the sensor probe and guides the sensor probe to be implanted into the skin; the motion unit is pushed by the driving unit to drive the sensor unit to move towards the skin; and the needle withdrawing unit is initially in an unloaded state, at least one part of the needle withdrawing unit is coupled with the movement unit, and at least one part of the needle withdrawing unit is coupled with the guide needle. According to the application, the risk problems of performance attenuation, advanced needle withdrawal and the like of a traditional needle withdrawal spring are solved, so that the reliability and the safety of the applicator are improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to an applicator assembly and an analyte detection sensor system. Background Art

[0002] An applicator is a device used to implant a sensor probe or other medical device under the skin, and is widely used in medical fields such as blood glucose monitoring and drug delivery. Traditional applicators usually adopt a spring-driven needle withdrawal mechanism. Its working principle is to store potential energy by compressing a spring, and when released, the restoring force of the spring is used to withdraw the guide needle from the skin.

[0003] However, this traditional needle withdrawal mechanism has the following problems:

[0004] Spring performance degradation: The traditional needle withdrawal spring is initially in a compressed state. Storing potential energy for a long time may cause the restoring force of the spring to weaken or be limited, affecting the timely withdrawal of the guide needle from the skin, thereby reducing the reliability and service life of the device.

[0005] Risk of premature needle withdrawal: Due to the action of the spring potential energy, the guide needle may be prematurely withdrawn before the sensor probe is fully implanted into the skin, resulting in the failure of the sensor probe implantation and affecting the accuracy and continuity of the monitoring data. Summary of the Invention

[0006] Based on this, this application provides an applicator assembly and an analyte detection sensor system to solve the problems of performance degradation of the traditional needle withdrawal spring and risks such as premature needle withdrawal, thereby improving the reliability and safety of the applicator.

[0007] To solve the above problems,

[0008] On the one hand, the present invention provides an applicator assembly, including:

[0009] A driving unit, initially in a pre-loaded state;

[0010] A pressing unit, pressing the pressing unit can release the potential energy of the driving unit;

[0011] A sensor unit, including 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;

[0012] A motion unit, which drives the sensor unit to move towards the skin under the push of the driving unit;

[0013] A needle withdrawal unit, 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;

[0014] During the process of the movement unit moving towards the skin, the needle withdrawal unit is continuously loaded. When the sensor unit reaches the implantation position on the skin, the coupling states of the needle withdrawal unit with the movement unit and the sensor unit are all broken; the sensor unit stays on the skin, the guiding needle guides the sensor probe to be implanted into the skin, and the potential energy stored in the needle withdrawal unit is released. Then, the needle withdrawal unit drives the guiding needle to move away from the skin.

[0015] Further, it further includes an inner shell, and the inner shell includes an inner shell sleeve and an inner shell claw; the pressing unit is disposed outside the inner shell sleeve and abuts against the inner shell claw.

[0016] Further, the needle withdrawal unit includes a needle withdrawal spring and a needle withdrawal seat. The needle withdrawal spring is in a free state in its initial state. One end of the needle withdrawal spring contacts the inner wall of the inner shell sleeve, and the other end contacts the needle withdrawal seat;

[0017] The bottom of the needle withdrawal seat is connected to the sensor unit.

[0018] Further, the movement unit includes a movement seat hook and a movement seat arm; one end of the inner shell claw is provided with an inner shell hook;

[0019] In the initial state, the movement seat arm is clamped on the needle withdrawal seat and is integrally disposed in the inner shell sleeve; the movement unit abuts against the bottom of the needle withdrawal seat, the movement seat hook is clamped with the inner shell hook, and the guiding needle passes through the needle withdrawal seat; one end of the driving unit contacts the outer wall of the inner shell sleeve, and the other end contacts the movement unit.

[0020] Further, when the pressing unit is actuated, the inner shell claw is pressed, and then the clamping connection between the movement seat hook and the inner shell hook is released; the driving unit drives the movement unit to drive the needle withdrawal seat to move synchronously towards the skin direction, and the needle withdrawal spring continuously stores elastic potential energy; when the movement unit drives the sensor unit to reach the skin position, the sensor unit leaves the bottom of the needle withdrawal seat and stays on the skin, and the guiding needle guides the sensor probe to be implanted into the skin.

[0021] Further, after the guiding needle guides the sensor probe to be implanted into the skin, the movement seat arm disengages from the inner shell sleeve, and then the clamping connection between the movement seat arm and the needle withdrawal seat is released; the elastic potential energy of the needle withdrawal spring drives the needle withdrawal seat to move away from the skin direction, and then the needle withdrawal seat drives the guiding needle to withdraw from the skin.

[0022] Further, the sensor unit further includes a conductive electrode, a battery, and a bottom plate. The sensor probe is perpendicularly connected to the conductive electrode, passes through the bottom plate, and the conductive electrode and the battery are placed on the bottom plate, and a glue groove is provided around the conductive electrode; the conductive electrode is perpendicular to the bottom plate, and electrode contacts are located on both side surfaces of the conductive electrode.

[0023] On the other hand, an analyte detection sensor system includes the aforementioned sensor unit and a transmitter unit connected to the sensor unit. The sensor probe on the sensor unit collects biological information and transmits the collected biological information to the transmitter unit, and the transmitter unit sends the biological information to the outside.

[0024] Further, a connector unit is further included for connecting the sensor unit and the transmitter unit; the connector unit includes a base and at least one metal elastic sheet. The metal elastic sheet includes an elastic part and a rigid part. The elastic parts are distributed on both sides of the conductive electrode and are in contact with the electrode contacts; the metal elastic sheet is placed on the base. The base includes 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 to the bottom plate after dispensing glue, so as to seal the elastic part and the conductive electrode.

[0025] Further, the transmitter unit includes a first conductive part and a second conductive part. The first conductive part is connected to the rigid part of the sensor unit, and the second conductive part is connected to the battery; an elastic first sealing part is provided around the first conductive part, and an elastic second sealing part is provided around the second conductive part. After the transmitter unit is buckled with the sensor unit, the elastic first sealing part is in contact with and compressed by the proximal end surface to achieve sealing at the sensor probe; the elastic second sealing part is in contact with and compressed by the bottom plate to achieve sealing at the battery.

[0026] Further, an upper housing, a lower housing, a first seal, and a second seal are further included;

[0027] The pressing unit and the inner housing are placed in the upper housing, and the first seal is provided between one end of the pressing unit and the upper housing; support ribs are provided in the lower housing;

[0028] In the initial state, the upper housing and the lower housing are sealed by the second seal, so as to form a sealed cavity between the upper housing and the lower housing; the support ribs in the lower housing are coupled with the other end of the pressing unit, and the pressing unit is limited; after the lower housing is removed, the support ribs in the lower housing are decoupled from the other end of the pressing unit, triggering the pressing unit, and the sensor unit can be fired.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The needle withdrawal unit of the present invention is initially in an unloaded state and cooperates with the driving unit initially in a pre-loaded state to enable the sensor unit to stay on the skin. The guiding needle guides the sensor probe on the sensor unit to implant into the skin, and the needle withdrawal unit releases the loaded potential energy and moves the guiding needle away from the skin. First, it avoids the problem of performance attenuation caused by the traditional spring being in a compressed state for a long time, ensuring that the guiding needle can be withdrawn from the skin in a timely and stable manner, significantly improving the reliability and service life of the device. Second, it can effectively avoid the problem of premature needle withdrawal caused by the spring potential energy, ensuring that the sensor probe can be completely implanted into the skin before the needle withdrawal operation, thereby ensuring the accurate implantation of the sensor probe and the continuity of the monitoring data. Third, it reduces the potential medical risks caused by failed needle withdrawal or premature needle withdrawal. Description of the Drawings

[0031] Fig. 1(a) is a schematic structural diagram of the applicator assembly in State 1 according to an embodiment of the present invention;

[0032] Fig. 1(b) is a schematic structural diagram of the applicator assembly in State 2 according to an embodiment of the present invention;

[0033] Fig. 1(c) is a schematic structural diagram of the applicator assembly in State 3 according to an embodiment of the present invention;

[0034] Fig. 1(d) is a schematic structural diagram of the applicator assembly in State 4 according to an embodiment of the present invention;

[0035] Figure 2 is an exploded view of the external structure of the applicator assembly according to an embodiment of the present invention;

[0036] Fig. 3(a) is a schematic structural diagram of the applicator assembly in State 1 according to another embodiment of the present invention;

[0037] Fig. 3(b) is a schematic structural diagram of the applicator assembly in State 2 according to another embodiment of the present invention;

[0038] Fig. 3(c) is a schematic structural diagram of the applicator assembly in State 3 according to another embodiment of the present invention;

[0039] Figure 4 is a schematic structural diagram of the sensor unit in an embodiment of the present invention;

[0040] Figure 5 is a schematic diagram of the cooperation relationship between the sensor unit and the guiding needle in an embodiment of the present invention;

[0041] Figure 6 is a schematic structural diagram of the connector unit in an embodiment of the present invention;

[0042] Figure 7Schematic diagram of the emitter unit structure according to an embodiment of the present invention;

[0043] Figure 8 Schematic diagram of the cooperation relationship between the sensor unit and the emitter unit according to an embodiment of the present invention;

[0044] Figure 9 Assembly diagram of the sensor unit and the emitter unit according to an embodiment of the present invention;

[0045] Figure 10 Assembly diagram of the sensor unit, the connector unit and the emitter unit according to an embodiment of the present invention;

[0046] Wherein: driving unit 1, pressing unit 2, sensor unit 3, sensor probe 31, guiding needle 32, first latch 33 and second latch 34, wrench 35, moving unit 4, moving seat hook 41, moving seat clamping arm 42, inner shell 5, inner shell sleeve 51, inner shell claw 52, inner shell hook 521, needle withdrawal spring 61, needle withdrawal seat 62, upper outer shell 71, first seal 711, lower outer shell 72, second seal 712, conductive electrode 311, battery 312, bottom plate 313, glue groove 314, adhesive tape 315, first bonding surface 3151, second bonding surface 3152, connector unit 21, base 211, proximal end surface 2111, distal end surface 2112, metal spring piece 212, elastic part 2121, rigid part 2122, emitter unit 11, first conductive part 111, elastic first seal part 1111, second conductive part 112, elastic second seal part 1121, first lock groove 113, second lock groove 114. Detailed implementation manners

[0047] The following further describes the present application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] Traditional springs are prone to performance degradation under long-term compression, resulting in untimely or unstable needle withdrawal. The applicator assembly provided in the embodiment of the present application, through the dynamic loading mechanism of the needle withdrawal unit, releases potential energy only after the sensor probe is implanted into the skin, ensuring that the guiding needle can be withdrawn from the skin in a timely and stable manner. This design significantly improves the reliability and service life of the device.

[0049] The specific solution is shown in Fig. 1(a) and includes:

[0050] Driving unit 1, initially in a pre-loaded state, capable of providing elastic potential energy;

[0051] Pressing unit 2, pressing the pressing unit 2 can release the elastic potential energy of the driving unit 1;

[0052] The sensor unit 3 includes a sensor probe 31 and a guiding needle 32. The guiding needle 32 is coupled with the sensor probe 31 to guide the sensor probe 31 to be implanted into the skin.

[0053] The motion unit 4, driven by the driving unit 1, moves the sensor unit 3 towards the skin.

[0054] The needle-withdrawal unit is initially in an unloaded state. At least a part of it is coupled with the motion unit 4 and at least a part of it is coupled with the guiding needle 32.

[0055] During the process of the motion unit 4 moving towards the skin, the needle-withdrawal unit is continuously loaded. Until the sensor unit 3 reaches the implantation position on the skin, the coupling states of the needle-withdrawal unit with the motion unit 4 and the sensor unit 3 are both broken. As shown in Figure 1(c), the sensor unit 3 stays on the skin, the guiding needle 32 guides the sensor probe 31 to be implanted into the skin, and the potential energy loaded on the needle-withdrawal unit is released. Then, the needle-withdrawal unit drives the guiding needle 32 to move away from the skin, as shown in Figure 1(d).

[0056] Explanatorily, the sensor probe 31 passes through the bottom plate 313 to ensure that it can be accurately implanted into the skin to collect target physiological data such as blood glucose. The sensor probe 31 is made of biocompatible materials such as polymer materials to ensure its safety to the human body and the 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 collection.

[0057] As an embodiment of the present application, as Figure 2 , it further includes an upper housing 71, a lower housing 72, a first seal 711 and a second seal 712.

[0058] The pressing unit 2 and the inner housing 5 are placed in the upper housing 71. A first seal 711 is arranged between one end of the pressing unit 2 and the upper housing 71. Support ribs are arranged in the lower housing 72.

[0059] In the initial state, the upper housing 71 and the lower housing 72 are sealed by the second seal 712 to form a sealed cavity between the upper housing 71 and the lower housing 72. And the cavity can be sterilized by means such as irradiation to provide a sterile environment and block the spread of microorganisms. The support ribs in the lower housing 72 are coupled with the other end of the pressing unit 2, and the pressing unit 2 is limited. After removing the lower housing 72, the support ribs in the lower housing 72 are decoupled from the other end of the pressing unit 2, triggering the pressing unit 2, and the sensor unit 3 can be struck and attached to the human skin.

[0060] 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 the pre-loaded state. By optimizing the material and structural design of the spring, fatigue and performance attenuation caused by long-term compression are avoided.

[0061] As an embodiment of the present application, as shown in FIG. 1(b), the preloading force of the driving unit 1 is adjustable to meet the requirements of different skin thicknesses or implantation depths. Exemplarily, a mechanism for adjusting the pre-tightening force of the spring is used in the driving unit 1, and the compression amount of the spring is changed by rotating or sliding the adjusting member, thereby adjusting the preloading force.

[0062] As an embodiment of the present application, the pressing unit 2 is equipped with a safety locking device to prevent the premature release of the potential energy of the driving unit 1 caused by accidental touch or accidental pressing, and to ensure 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 triggering process of the pressing unit 2 before operation.

[0063] As an embodiment of the present application, under the push of the driving unit 1, the moving unit 4 adopts a linear guide rail or a low-friction sliding mechanism to ensure smooth movement towards the skin direction without jitter, and to avoid causing additional damage to the skin. The movement speed of the moving unit 4 is optimized, neither causing impact due to excessive speed nor affecting the implantation efficiency due to too slow speed.

[0064] Exemplarily, a mechanical limit structure is designed on the moving unit 4 to ensure that it can automatically stop when reaching 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 the limit.

[0065] As an embodiment of the present application, it further includes an inner shell 5, and the inner shell 5 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.

[0066] Exemplarily, the inner shell sleeve 51 is made of high-strength and lightweight materials such as aluminum alloy or engineering plastic to ensure its mechanical strength while reducing the overall weight. Guide grooves or guide rails are designed inside the inner shell sleeve 51 to guide the movement of the pressing unit 2 and the driving unit 1, ensuring the smoothness and accuracy of the operation process.

[0067] Exemplarily, the inner shell claw 52 is designed as an elastic structure and can deform within a certain range to ensure that the pressing unit 2 can smoothly trigger the release of the potential energy of the driving unit 1 when pressed. The elastic material of the inner shell claw 52 preferably selects high-performance plastic to ensure its reliability.

[0068] Exemplarily, the contact surface between the pressing unit 2 and the inner shell claw 52 is designed to be arc-shaped or beveled to ensure that the pressing force can be evenly transmitted and avoid wear or damage caused by local stress concentration.

[0069] As an embodiment of the present application, the needle withdrawing unit includes a needle withdrawing spring 61 and a needle withdrawing seat 62. The initial state of the needle withdrawing spring 61 is a free state. One end of the needle withdrawing spring 61 contacts the inner wall of the inner shell sleeve 51, and the other end contacts the needle withdrawing seat 62.

[0070] As a preferred embodiment, the needle withdrawing spring 61 is designed as a tension spring. As Figure 1(a)-1(d) shown, the initial state of the needle withdrawing spring 61 is a free state. One end is fixed to the inner wall of the inner shell sleeve 51, and the other end is connected to the needle withdrawing seat 62. During the process of the moving unit 4 moving towards the skin, the needle withdrawing 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 withdrawing seat 62 and the guiding needle 32 to quickly withdraw.

[0071] As another preferred embodiment, the needle withdrawing spring 61 is designed as a compression spring. As Figure 3(a)-3(c) shown, the initial state of the needle withdrawing spring 61 is a free state. One end is fixed to the inner wall of the inner shell sleeve 51, and the other end is connected to the needle withdrawing seat 62. During the process of the moving unit 4 moving towards the skin, the needle withdrawing spring 61 is gradually compressed and stores potential energy; when the sensor unit 3 reaches the implantation position, the potential energy of the needle withdrawing spring 61 is released, pushing the needle withdrawing seat 62 and the guiding needle 32 to quickly withdraw.

[0072] By adopting the above preferred embodiments, during the needle withdrawing process, on the one hand, the problem of performance attenuation caused by the traditional spring being in a compressed state for a long time is avoided, and on the other hand, the problem of premature needle withdrawal caused by the action of the spring potential energy can be effectively avoided, thereby reducing the potential medical risks caused by needle withdrawal failure or premature needle withdrawal.

[0073] As an embodiment of the present application, the moving unit 4 includes a moving seat hook 41 and a moving seat arm 42; one end of the inner shell claw 52 is provided with an inner shell hook 521.

[0074] In the initial state, the moving seat arm 42 is clamped on the needle withdrawing seat 62 and is integrally placed in the inner shell sleeve 51; the moving unit 4 abuts against the bottom of the needle withdrawing seat 62, the moving seat hook 41 is clamped with the inner shell hook 521, and the guiding needle 32 passes through the needle withdrawing seat 62; one end of the driving unit 1 contacts the outer wall of the inner shell sleeve 51, and the other end contacts the moving unit 4. Through the precise cooperation between the moving seat hook 41 and the inner shell hook 521, the movement of the moving unit 4 is ensured to be stable.

[0075] When the pressing unit 2 is pressed, the inner shell claw 52 is pressed, and then the engagement between the moving seat hook 41 and the inner shell hook 521 is released; the driving unit 1 drives the moving unit 4 to drive the needle withdrawing seat 62 to move synchronously towards the skin direction, and the needle withdrawing spring 61 continuously stores elastic potential energy; when the moving unit 4 drives the sensor unit 3 to reach the skin position, the sensor unit 3 leaves the bottom of the needle withdrawing seat 62 and stays on the skin, and the guiding needle 32 guides the sensor probe 31 to be implanted into the skin, and the moving seat arm 42 disengages from the inner shell sleeve 51, and then the engagement between the moving seat arm 42 and the needle withdrawing seat 62 is released; the elastic potential energy of the needle withdrawing spring 61 drives the needle withdrawing seat 62 to move away from the skin direction, and then the needle withdrawing seat 62 drives the guiding needle 32 to withdraw from the skin. The user only needs to press the pressing unit 2 to automatically complete a series of operations of driving, moving and needle withdrawing, which simplifies the operation process and improves the user experience.

[0076] Exemplarily, when in use, the operation process of the applicator assembly is as follows:

[0077] Remove the lower shell 72 and attach the bottom of the remaining applicator assembly to the skin;

[0078] Press the pressing unit 2, and the inner shell hook 521 expands outwards;

[0079] The driving unit 1 pushes the moving unit 4 to drive the sensor unit 3 to move towards the skin;

[0080] The needle withdrawing seat 62 is held by the moving seat arm 42 and moves together with the moving unit 4;

[0081] The needle withdrawing spring 61 is initially in a free state. As the needle withdrawing seat 62 moves towards the skin, the needle withdrawing spring 61 is stretched and has potential energy;

[0082] In the first half of the movement, the moving seat arm 42 is held by the inner shell sleeve 51 and cannot deform. The needle withdrawing seat 62 is held by the moving seat arm 42, and the needle withdrawing spring 61 continues to be stretched;

[0083] When the moving unit 4 drives the sensor unit 3 to reach the skin position, the moving seat arm 42 disengages from the inner shell sleeve 51;

[0084] The potential energy of the needle withdrawing spring 61 pulls the needle withdrawing seat 62 to move away from the skin direction. The deformation of the moving seat arm 42 causes the needle withdrawing seat 62 to disengage from the moving unit 4, and then continues to move backward to complete needle withdrawal.

[0085] As an embodiment of the present application, such as Figure 4 、 Figure 9 and Figure 10As shown, the sensor unit 3 further includes a conductive electrode 311, a battery 312, and a base plate 313. The sensor probe 31 is perpendicularly connected to the conductive electrode 311, and the conductive electrode 311 is perpendicularly connected to the sensor probe 31, ensuring the shortest signal transmission path, reducing signal attenuation and interference, and ensuring that the collected physiological data is more accurate and stable. The electrode contacts are located on both side surfaces of the conductive electrode 311, facilitating reliable connection with the connector.

[0086] The base plate 313 is designed with mounting grooves and fixing holes, facilitating the installation and fixation of the conductive electrode 311, the battery 312, and the sensor probe 31. The sensor probe 31 passes through the base plate 313.

[0087] 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 to ensure a firm and sealed connection between the conductive electrode 311 and the base plate 313. The conductive electrode 311 is perpendicular to the base plate 313, and the electrode contacts are located on both side surfaces of the conductive electrode 313, which can better shield external electromagnetic interference and improve the signal-to-noise ratio of the signal.

[0088] The present invention also provides an analyte detection sensor system, including the above-mentioned sensor unit 3 and a transmitter unit 11 connected to the sensor unit. The sensor probe 31 on the sensor unit 3 collects biological information and transmits the collected biological information to the transmitter unit 11, and the transmitter unit 11 sends the biological information to the outside world.

[0089] As an embodiment, the analyte detection sensor system further includes a connector unit 21, as Figure 5 shown, for connecting the sensor unit 3 and the transmitter unit 11.

[0090] Exemplarily, as Figure 6 shown, the connector unit 21 includes a base 211 and at least one metal spring piece 212. The metal spring piece 212 includes an elastic portion 2121 and a rigid portion 2122. The elastic portion 2121 is distributed on both sides of the conductive electrode 311 and contacts the electrode contacts. The metal spring piece 212 is placed on the base 211.

[0091] Exemplarily, as Figure 6 shown, the base 211 includes a proximal end surface 2111 and a distal end surface 2112. The proximal end surface 2111 contacts the transmitter unit 11, and the distal end surface 2112 is located in the glue groove 314 and is fixed to the base plate 313 after dispensing glue, sealing the elastic portion 2121 and the conductive electrode 311. Exemplarily, a flow guide groove or a groove can be designed on the distal end surface 2112 to facilitate uniform distribution of the glue and improve the sealing effect.

[0092] Exemplarily, the elastic portion 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 connections and disconnections.

[0093] Explanatory, the rigid part 2122 is used to support the elastic part 2121, ensuring that the metal spring piece 212 will not be permanently deformed when subjected to force. The rigid part 2122 is fixed to the base 211, ensuring that the position of the metal spring piece 212 is stable.

[0094] Preferably, the contact surface of the metal spring 212 is plated, such as gold-plated or silver-plated, to improve its conductivity and corrosion resistance.

[0095] Explanatoryally, the physiological data collected by the sensor probe 31 is transmitted to the metal dome 212 through the conductive electrode 311 , and then transmitted to the transmitter unit 11 through the connector unit 21 .

[0096] As an example, the base 211 is made of plastic, the metal shrapnel 212 is embedded in the base 211, and the elastic part 2121 and the rigid part 2122 are sealed by the glue groove 314 and the elastic first sealing part 1111 respectively. As an explanation, the base 211 is made of high-strength, corrosion-resistant engineering plastics, such as POM, PC or ABS, to ensure its mechanical strength and durability. In addition, the plastic material has good insulation properties, which can effectively isolate the metal shrapnel 212 from the external environment to prevent short circuits.

[0097] For example, Figure 7 As shown, 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 of the sensor unit, and the second conductive part 112 is connected to the battery 312; an elastic first sealing part 1111 is arranged around the first conductive part 111, and an elastic second sealing part 1121 is arranged around the second conductive part 112, after the transmitter unit 11 is buckled with the sensor unit 3, the elastic first sealing part 1111 contacts with the proximal surface 2111 and is compressed, so as to achieve sealing at the sensor probe; the elastic second sealing part 1121 contacts with the bottom plate 313 and is compressed, so as to achieve sealing at the battery.

[0098] For example, Figure 8 As shown, the sensor unit 3 further includes a first lock buckle 33 and a second lock buckle 34 , and the transmitter unit 11 further includes 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 buckle 33 is buckled with the first lock groove 113 , and the second lock buckle 34 is buckled with the second lock groove 114 .

[0099] For example, Figure 8As shown, a wrench 35 is provided on the first latch and / or the second latch. By pulling the wrench 35, the disassembly of the transmitter unit and the sensor unit can be achieved.

[0100] Exemplarily, as Figure 5 shown, the sensor unit further includes an adhesive tape 315, which includes a first adhesive surface 3151 connected to the bottom plate; and a second adhesive surface 3152 adhered to the skin.

[0101] It should be noted that in this application, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the method, article or device comprising the elements.

[0102] In the description of this application, unless otherwise clearly defined, terms such as "arranged", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in this application in combination with the specific content of the technical solution.

[0103] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0104] In this application, specific examples are used to illustrate the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present invention, various modifications, combinations, sub-combinations and substitutions can be made. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. An applicator assembly, characterized in that: include: A drive unit (1) is initially in a preloaded state; A pressing unit (2), wherein pressing the pressing unit (2) can release the potential energy of the driving unit (1); A sensor unit (3) comprises a sensor probe (31) and a guide needle (32), wherein the guide needle (32) is coupled to the sensor probe (31) to guide the sensor probe (31) to be implanted into the skin; A motion unit (4) moves toward the skin with the sensor unit (3) under the impetus of the drive unit (1); a needle withdrawal unit, 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 process of the motion unit (4) moving toward the skin, the needle withdrawal unit is continuously loaded until the sensor unit (3) reaches the implantation position of the skin, at which time the coupling state between the needle withdrawal unit, the motion unit (4) and the sensor unit (3) is broken; 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 loaded on the needle withdrawal unit is released, and then the needle withdrawal unit moves with the guide needle (32) in a direction away from the skin.

2. The applicator assembly of claim 1, wherein: It also comprises an inner shell (5), wherein the inner shell (5) comprises an inner shell sleeve (51) and an inner shell claw (52); the pressing unit (2) is disposed outside the inner shell sleeve (51) and abuts against the inner shell claw (52).

3. The applicator assembly of claim 2, wherein: The needle withdrawal unit comprises a needle withdrawal spring (61) and a needle withdrawal seat (62); the needle withdrawal spring (61) is initially in a free state; one end of the needle withdrawal spring (61) contacts the inner wall of the inner shell sleeve (51), and the other end contacts the needle withdrawal seat (62); The bottom of the needle withdrawal seat (62) is connected to the sensor unit (3).

4. The applicator assembly of claim 3, wherein: The motion unit (4) comprises a motion seat hook (41) and a motion seat arm (42); an inner shell hook (521) is provided at one end of the inner shell claw (52); In the initial state, the moving seat clamping arm (42) is clamped on the needle withdrawal seat (62) and is placed as a whole in the inner shell sleeve (51); the moving unit (4) abuts against the bottom of the needle withdrawal seat (62), the moving 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 driving unit (1) contacts the outer wall of the inner shell sleeve (51), and the other end contacts the moving unit (4).

5. The applicator assembly of claim 4, wherein: The pressing unit (2) acts to press the inner shell claw (52), thereby releasing the engagement between the moving seat hook (41) and the inner shell hook (521); the driving unit (1) drives the moving unit (4) to drive the needle withdrawal seat (62) to move synchronously toward the skin, and the needle withdrawal spring (61) continuously stores elastic potential energy; when the moving unit (4) drives the sensor unit (3) to reach 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.

6. The applicator assembly of claim 5, wherein: After the guide needle (32) guides the sensor probe (31) to be implanted into the skin, the moving seat clamping arm (42) is disengaged from the inner shell sleeve (51), and the clamping connection between the moving seat clamping arm (42) and the needle withdrawal seat (62) is released; the elastic potential energy of the needle withdrawal spring (61) drives the needle withdrawal seat (62) to move away from the skin, and the needle withdrawal seat (62) drives the guide needle (32) to withdraw from the skin.

7. The applicator assembly of claim 1, wherein: The sensor unit (3) further comprises a conductive electrode (311), a battery (312) and a bottom plate (313); the sensor probe (31) is vertically connected to the conductive electrode (311); the sensor probe (31) passes through the bottom plate (313); the conductive electrode (311) and the battery (312) are placed on the bottom plate (313); and a glue groove (314) is arranged around the conductive electrode (311); the conductive electrode (311) is perpendicular to the bottom plate (313); and electrode contacts are located on two side surfaces of the conductive electrode (313).

8. An analyte detection sensor system, characterized in that: It comprises a sensor unit (3) as claimed in any one of claims 1 to 7 and a transmitter unit (11) connected to the sensor unit, wherein the sensor probe (31) on the sensor unit (3) collects biological information and transmits the collected biological information to the transmitter unit (11), and the transmitter unit (11) sends the biological information to the outside world.

9. The analyte detection sensor system according to claim 8, characterized in that The invention also comprises a connector unit (21) for connecting the sensor unit (3) and the transmitter unit (11); the connector unit (21) comprises a base (211) and at least one metal spring (212); the metal spring (212) comprises an elastic part (2121) and a rigid part (2122); the elastic part (2121) is distributed on both sides of the conductive electrode (311) and contacts the electrode contact point; the metal spring (212) is placed on the base (211); the base (211) comprises a proximal surface (2111) and a distal surface (2112); the proximal surface (2111) contacts the transmitter unit (11); the distal surface (2112) is located in the glue groove (314); after glue application, the proximal surface (2111) is fixed to the bottom plate (313); and the elastic part (2121) and the conductive electrode (311) are sealed.

10. The analyte detection sensor system according to claim 9, wherein: The transmitter unit (11) comprises a first conductive part (111) and a second conductive part (112), wherein the first conductive part (111) is connected to the rigid part (2122) of the sensor unit, and the second conductive part (112) is connected to the battery (312); an elastic first sealing part (1111) is arranged around the first conductive part (111), and an elastic second sealing part (1121) is arranged around the second conductive part (112); after the transmitter unit (11) and the sensor unit (3) are buckled together, the elastic first sealing part (1111) contacts and is compressed with the proximal surface (2111), thereby achieving sealing at the sensor probe; and the elastic second sealing part (1121) contacts and is compressed with the bottom plate (313), thereby achieving sealing at the battery.

11. The analyte detection sensor system according to any one of claims 8 to 10, characterized in that: It also includes an upper shell (71), a lower shell (72), a first sealing member (711) and a second sealing member (712); The pressing unit (2) and the inner shell (5) are placed in the upper outer shell (71); the first sealing member (711) is arranged between one end of the pressing unit (2) and the upper outer shell (71); and supporting ribs are arranged in the lower outer shell (72); 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); the support ribs in the lower shell (72) are coupled with the other end of the pressing unit (2), and the pressing unit (2) is limited; after the lower shell (72) is removed, the support ribs in the lower shell (72) are decoupled from the other end of the pressing unit (2), the pressing unit (2) is stimulated, and the sensor unit (3) can be fired.

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