In-vivo blood glucose monitoring device

Abstract

Disclosed in the present application is an in-vivo blood glucose monitoring device, which comprises a housing, a limiting sleeve, and a needle-assist unit. The housing is provided with a first end and a second end which are oppositely arranged along a first direction. The limiting sleeve is provided with a limiting channel extending along the first direction. A puncture unit is used for inserting a sensor part into the host's body. The needle-assist unit comprises at least two clamping parts. The clamping parts are located on the outer sides of the puncture unit to limit movement of the puncture unit, and the clamping parts are located in the limiting channel and are movable along the first direction. When the clamping parts move to a release position, the clamping parts release the puncture unit, such that the puncture unit moves along a second direction. The second direction is opposite to the first direction. The clamping parts clamp and release the puncture unit from the outer side, thereby driving the puncture unit while limiting and triggering a needle withdrawal motion. This design simplifies the structural configuration of both the needle-assist unit and the puncture unit, reduces the production difficulty, improves the production efficiency, and ensures the smoother switching between needle insertion and withdrawal without any sense of jamming.

Description

In-body blood glucose monitoring device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 29, 2024, with application number "202410377169.2" and invention name "A In Vivo Blood Glucose Monitoring Device", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of medical equipment, and in particular to an in-vivo blood glucose monitoring device. Background Art

[0003] CGM (Continuous Glucose Monitoring) is a medical device used to continuously monitor blood sugar levels in patients with diabetes. Compared to traditional blood sugar monitoring methods, CGM provides continuous and detailed blood sugar level data, helping users better manage their blood sugar status.

[0004] When in use, the user needs to place the CGM product shell on the skin and then press the trigger button. At this time, the needle-assisting assembly inside the shell drives the puncture needle and sensor pin to move toward the skin and pierce the human skin. The biological enzymes on the sensor produce an electrochemical reaction with the subcutaneous tissue fluid, which is converted into an electrical signal and provided to the user by converting it into a blood sugar value.

[0005] Most existing needle-assisting assemblies use abutment to drive the puncture needle for implantation. An unlocking mechanism then releases the needle, allowing it to reverse and withdraw. This drive and release method not only increases the structural complexity of the monitoring system but also requires high machining precision, impacting production efficiency and increasing costs. Furthermore, poor needle guidance during insertion and withdrawal can cause the needle to wobble during movement, increasing pain for the user.

[0006] Summary of the Invention

[0007] The present application provides an in vivo blood glucose monitoring device to solve the technical problems that the existing monitoring system has a complex structure, high processing and assembly precision requirements, poor guiding effect on the puncture needle, and the puncture needle is prone to shaking during movement, which increases the user's pain.

[0008] The technical solutions adopted in this application are:

[0009] An in-vivo blood glucose monitoring device comprises a shell, the shell having a first end and a second end arranged opposite to each other along a first direction, the second end being provided with a mating opening; a limiting sleeve arranged in the shell, the limiting sleeve being provided with a limiting channel extending along the first direction; a puncture unit, the puncture unit being arranged inside the shell and used to partially puncture a sensor into the host body; and an auxiliary needle unit, the auxiliary needle unit comprising at least two clamping parts, the clamping parts being located outside the puncture unit and being arranged to limit the movement of the puncture unit relative to the clamping parts, the clamping parts being located in the limiting channel and being able to move along the first direction within the limiting channel; when the clamping parts move to a release position relative to the limiting channel, the clamping parts release the puncture unit so that the puncture unit moves along a second direction relative to the clamping parts, the second direction being opposite to the first direction.

[0010] Preferably, the limiting sleeve includes a clamping section and a release section. In the first direction, the cross-sectional area of ​​the clamping section is the same, and the cross-sectional area of ​​the release section gradually increases. The clamping portion includes an inclined section and a fixed section. In the first direction, the cross-sectional area of ​​the inclined section gradually increases, and the cross-sectional area of ​​the fixed section is the same.

[0011] Preferably, the release section is closer to the second end than the clamping section; the fixing section cooperates with the clamping section to clamp the puncture unit, and when the clamping portion moves to the release position, the inclined section cooperates with the release section to release the puncture unit.

[0012] Preferably, a guide section is further provided at one end of the fixed section facing the first end, and the cross-sectional area of ​​the guide section gradually increases along the first direction.

[0013] Preferably, a support member is further provided inside the housing, and the support member abuts against the release section to limit the movement of the limiting sleeve along the first direction.

[0014] Preferably, the limiting sleeve is further provided with a guide channel extending along the first direction, and the needle-assisting unit further comprises a guide portion connected to the clamping portion and located in the guide channel.

[0015] Preferably, the clamping portion includes a fixed end facing the second end, and a swing end facing the first end, and the swing end can swing around the fixed end to clamp or release the puncture unit.

[0016] Preferably, the first end is provided with a trigger unit, which can move along a first direction to trigger the needle-assisting unit to drive the puncture unit along the first direction to puncture the sensor portion into the host body.

[0017] Preferably, the trigger unit includes a trigger button and an elastic member connected to the trigger button, and the elastic member includes a locked state and an unlocked state. In the locked state, the elastic member cooperates with the auxiliary needle unit to limit the movement of the auxiliary needle unit. The trigger button moves in a first direction to deform or move the elastic member and switch to an unlocked state to release the lock on the auxiliary needle unit.

[0018] Preferably, the housing is provided with an installation channel for installing the trigger button, and a limiting protrusion is provided on the inner wall of the installation channel. The elastic member extends into the installation channel and has a matching rib protruding perpendicular to the first direction. The elastic member can be elastically deformed under the push of the limiting protrusion so that the matching rib and the limiting protrusion are stopped or loosened.

[0019] Preferably, the needle-assisting unit includes a pushing member and a resetting member, the pushing member is used to drive the clamping portion to move along the first direction, the resetting member is used to drive the puncture unit to move along the second direction, and the pushing member is sleeved on the outer circumference of the resetting member.

[0020] Preferably, the in vivo blood glucose monitoring device also includes a bottom shell fixed to the second end, the bottom shell is provided with an implantation port; and an in vivo monitoring unit, the in vivo monitoring unit includes a first electronic unit and a second electronic unit, the first electronic unit includes a sensor, the second electronic unit includes a signal processing module, the first electronic unit is fixed inside the outer shell, the second electronic unit is fixed to the bottom shell, and during the movement of the auxiliary needle unit along the first direction, the sensor part penetrates into the host body and the first electronic unit and the second electronic unit are electrically connected.

[0021] Preferably, the first electronic unit further includes an upper housing and a battery. The battery and the sensor are fixed to the upper housing, and the battery can be electrically connected to the signal processing module.

[0022] Preferably, the in vivo blood glucose monitoring device further comprises a bottom cover detachably fixed to the bottom shell, and the bottom cover covers the implantation port.

[0023] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0024] The in-vivo blood glucose monitoring device of the present application, after being triggered by the user, the auxiliary needle unit drives the puncture unit to move along the first direction toward the matching port to perform the implantation operation. During this process, the needle of the puncture unit carries the sensor and penetrates into the host body. After the auxiliary needle unit and the puncture unit move into place, the auxiliary needle unit releases the puncture unit, allowing the puncture unit to move alone along the second direction toward the first end to perform the needle withdrawal operation. The needle is pulled out of the host body and retracts into the inside of the shell, completing the entire implantation process.

[0025] In the present application, the needle-assisting unit includes at least two clamping parts, which restrict the puncture unit by clamping and fixing it in the limiting channel. Under the abutment of the inner wall of the outer limiting channel, the clamping parts tightly clamp the puncture unit, so that the relative position of the puncture unit and the needle-assisting unit remains unchanged. The clamping force can not only drive the trigger unit to drive the puncture unit when the needle-assisting unit is triggered, carrying the puncture unit with it to move in the first direction, but also firmly fix the puncture unit to limit the puncture unit, preventing the puncture unit from being released prematurely and withdrawing the needle, thereby ensuring that the entire implantation process is carried out reliably and orderly. As the clamping part moves in the first direction, at least part of the clamping part slides out of the limiting channel, thereby losing the pressure of the inner wall of the limiting channel, and the clamping force of the clamping part on the puncture unit is weakened, so that the puncture unit loses the restriction of the needle-assisting unit and is released, and then moves in the second direction to complete the needle withdrawal.

[0026] By clamping and releasing the puncture unit from the outside, the clamping portion limits and triggers the actuation and needle withdrawal of the puncture unit. This simplifies the structural design of the needle-assisting unit and the puncture unit, eliminating the need for complex stop structures on either side. This reduces the positioning requirements for each component, lowering both machining and assembly precision requirements, thereby reducing production difficulty and improving production efficiency. Furthermore, during the puncture unit's movement in the first direction for insertion and in the second direction for withdrawal, there is no motion interference from structures perpendicular to the first direction. This improves the stability and smoothness of the puncture unit's movement, ensuring smooth movement and a smoother transition between insertion and withdrawal without any sticking. Furthermore, it enhances the guiding effect on the puncture unit, reduces the shaking caused by the movement of the puncture unit, and ensures smoother axial movement of the puncture unit, reducing pain for the user during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] FIG1 is a cross-sectional view of an in-vivo blood glucose monitoring device in an untriggered state according to one embodiment of the present application;

[0029] FIG2 is a cross-sectional view of the in-body blood glucose monitoring device in FIG1 when the trigger button is pressed;

[0030] FIG3 is a cross-sectional view of the in-vivo blood glucose monitoring device in FIG2 , in which the needle-assisting unit releases the puncture unit;

[0031] FIG4 is a cross-sectional view of a portion of an in-body blood glucose monitoring device according to an embodiment of the present application;

[0032] FIG5 is a schematic structural diagram of a first electronic unit according to an embodiment of the present application;

[0033] FIG6 is a cross-sectional view of the first electronic unit in FIG5 ;

[0034] FIG7 is a cross-sectional view of a second electronic unit according to an embodiment of the present application;

[0035] FIG8 is a cross-sectional view of an on-body monitoring unit according to an embodiment of the present application;

[0036] FIG9 is a cross-sectional view of the bottom shell and the bottom cover according to an embodiment of the present application;

[0037] FIG10 is a schematic structural diagram of the bottom shell and the bottom cover in FIG9 .

[0038] Wherein: 1 housing; 11 mating opening; 12 limiting protrusion; 13 diameter expansion section; 14 support member; 15 snap buckle; 16 installation channel; 2 limiting sleeve; 21 limiting channel; 22 clamping section; 23 release section; 231 guide surface; 24 guide section; 25 guide channel; 3 puncture unit; 31 needle seat; 32 needle; 4 needle assist unit; 41 clamping part; 411 fixed section; 412 inclined section; 42 guide part; 43 outer tube; 44 installation slot; 45 hook; 5 push member; 6 reset member; 7 trigger unit; 71 trigger button; 72 elastic member; 73 hook ;74 mating rib;75 stop rib;76 accommodating groove;8 on-body monitoring unit;81 first electronic unit;811 upper shell;812 fixing groove;813 sensor;8131 substrate;8132 contact pin;814 battery;815 conductive silicone;816 sealing silicone;817 sealing rib;818 snap;819 through hole;82 second electronic unit;821 lower shell;822 adhesive layer;823 snap joint;824 stop rib;825 signal processing module;826 sealing groove;827 seal;9 bottom shell;91 slot;92 avoidance opening;93 implantation opening;94 through opening;95 elastic rib position;96 bottom cover;961 support column. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0040] As shown in Figures 1 to 3, an in-vivo blood glucose monitoring device includes a housing 1, the housing 1 having a first end and a second end arranged opposite to each other along a first direction, and the second end having a mating opening 11; a limiting sleeve 2, arranged in the housing 1, the limiting sleeve 2 having a limiting channel 21 extending along the first direction; a puncture unit 3, the puncture unit 3 being arranged inside the housing 1 and used to partially penetrate the sensor 813 into the host body; and an auxiliary needle unit 4, the auxiliary needle unit 4 including at least two clamping parts 41, the clamping part 41 being located outside the puncture unit 3 and being configured to limit the movement of the puncture unit 3 relative to the clamping part 41, the clamping part 41 being located in the limiting channel 21 and being able to move in the first direction within the limiting channel 21; when the clamping part 41 moves to a release position relative to the limiting channel 21, the clamping part 41 releases the puncture unit 3, so that the puncture unit 3 moves in a second direction relative to the clamping part 41, and the second direction is opposite to the first direction.

[0041] It can be understood that, as shown in Figures 1 to 3, the first direction is along the axial direction of the housing 1 toward the mating opening 11, and the second direction is along the axial direction of the housing 1 away from the mating opening 11. After the user triggers, the auxiliary needle unit 4 drives the puncture unit 3 to move along the first direction toward the mating opening 11 to perform the implantation operation. During this process, the needle 32 of the puncture unit 3 carrying the sensor 813 penetrates the host body. After the auxiliary needle unit 4 and the puncture unit 3 move into place, the auxiliary needle unit 4 releases the puncture unit 3, allowing the puncture unit 3 to move independently along the second direction toward the first end to perform the needle withdrawal operation. The needle 32 is withdrawn from the host body and retracted into the interior of the housing 1, completing the entire implantation process.

[0042] In the present application, the needle-assisting unit 4 includes at least two clamping portions 41. Clamping portions 41 restrict the puncture unit 3 within the limiting channel 21 by clamping and securing it. Under the abutment of the inner wall of the outer limiting channel 21, the clamping portions 41 tightly clamp the puncture unit 3, maintaining the relative position of the puncture unit 3 and the needle-assisting unit 4 unchanged. This clamping force not only enables the trigger unit 7 to drive the puncture unit 3 when the needle-assisting unit 4 is triggered, carrying the puncture unit 3 with it in the first direction, but also firmly secures the puncture unit 3, limiting its position and preventing it from being released prematurely and withdrawing the needle, thereby ensuring a reliable and orderly implantation process. As the clamping portions 41 move in the first direction, at least a portion of the clamping portions 41 slides out of the limiting channel 21, thereby losing the pressure from the inner wall of the limiting channel 21. The clamping force of the clamping portions 41 on the puncture unit 3 weakens, causing the puncture unit 3 to be released without the restraint of the needle-assisting unit 4, and then to move in the second direction to complete the needle withdrawal.

[0043] By clamping and releasing the puncture unit 3 from the outside through the clamping portion 41, the drive of the puncture unit 3 and the needle withdrawal movement are restricted and triggered, making the structural design of the needle-assisting unit 4 and the puncture unit 3 simpler, eliminating the need for complex stop structures on both. Furthermore, the position requirements for each component are reduced, and the processing and assembly precision requirements are reduced, thereby reducing production difficulty and improving production efficiency. Furthermore, when the puncture unit 3 moves along the first direction to insert the needle or along the second direction to withdraw the needle, there is no structure perpendicular to the first direction that interferes with its movement. This improves the stability and smoothness of the puncture unit 3 during movement, allowing the puncture unit 3 to move smoothly, and the switching process between needle insertion and needle withdrawal is more streamlined without any sticking. Furthermore, the shaking caused by the movement of the puncture unit 3 is reduced, allowing the puncture unit 3 to move more smoothly along the axial direction of the housing 1, reducing the pain felt by the user during use.

[0044] Preferably, there are two clamping portions 41, arranged oppositely on either side of the puncture unit 3. The two clamping portions 41 can move inward together to clamp the puncture unit 3, and expand outward together to release the puncture unit 3. Of course, there can also be more than two clamping portions 41, such as three, four, or six, and they can be evenly spaced along the circumference of the puncture unit 3 to enhance the deformability of the clamping portions 41 and provide a stable and uniform clamping force on the puncture unit 3. The limiting sleeve 2 is disposed on the outside of the clamping portion 41.

[0045] It should be noted that this application does not limit the cross-sectional shape of the limiting sleeve 2. Preferably, the limiting sleeve 2 is cylindrical and its cross-section is circular. It can also be other shapes, such as a rectangular, triangular, polygonal, etc. cross-section, which is not limited here.

[0046] Specifically, as shown in FIG. 4 , the puncture unit 3 includes a needle seat 31 and a needle 32 . The clamping portion 41 is located on at least two sides of the needle seat 31 to clamp the needle seat 31 . The needle 32 is located outside the limiting channel 21 .

[0047] As a preferred embodiment of the present application, as shown in Figure 4, the limiting sleeve 2 includes a clamping section 22 and a release section 23. In the first direction, the cross-sectional area of ​​the clamping section 22 is the same, and the cross-sectional area of ​​the release section 23 gradually increases. The clamping portion 41 includes an inclined section 412 and a fixed section 411. In the first direction, the cross-sectional area of ​​the inclined section 412 gradually increases, and the cross-sectional area of ​​the fixed section 411 is the same.

[0048] Specifically, as shown in Figure 4, the release section 23 is closer to the second end than the clamping section 22, and the inclined section 412 is closer to the first end than the fixed section 411; the fixed section 411 cooperates with the clamping section 22 to clamp the puncture unit 3, and when the clamping portion 41 moves to the release position, the inclined section 412 cooperates with the release section 23 to release the puncture unit 3.

[0049] As shown in Figures 1 and 2, in their initial positions, the clamping portion 41 and the puncture unit 3 are both located within the clamping section 22 of the limiting sleeve 2. The fixed section 411 of the clamping portion 41 is squeezed inward by the clamping section 22, tightly clamping the puncture unit 3. The clamping section 22 and the fixed section 411 have the same cross-sectional area along the first direction, thereby exerting a uniform squeezing force on the clamping portion 41, allowing it to more stably clamp the puncture unit 3. As the auxiliary needle unit 4, carrying the puncture unit 3, moves in the first direction to the release section 23, as shown in Figure 3, the inclined section 412 now corresponds to the release section 23. As shown in Figure 4, the cross-sectional area of ​​the release section 23 gradually increases, forming a guide surface 231 on the side facing the auxiliary needle unit 4. The cross-sectional area of ​​the inclined section 412 of the clamping portion 41 also gradually increases in the first direction, forming a mating surface. The guide surface 231 and the mating surface cooperate to guide the clamping portion 41 outward, thereby releasing the puncture unit 3.

[0050] The change in cross-sectional area of ​​the release section 23 along the first direction can guide the outward expansion of the clamping portion 41. Therefore, the release section 23 is positioned at the end of the limiting channel 21. This allows the puncture unit 3 to be released only when at least a portion of the clamping portion 41 moves in the first direction to the end of the limiting channel 21. Prior to this, the clamping portion 41 firmly holds the puncture unit 3. This ensures that the needle withdrawal action is triggered only when the puncture unit 3 completes the insertion action, preventing the puncture unit 3 from being released prematurely and triggering the needle withdrawal action prematurely. This ensures that the entire implantation process proceeds smoothly and improves product reliability.

[0051] Preferably, the clamping portion 41 can be made of a material with a certain degree of elastic deformation, such as plastic. It can clamp the puncture unit 3 when squeezed by the inner wall of the limiting sleeve 2, and can also expand outward to release the puncture unit 3 when guided by the release section 23. The clamping portion 41 can also be made of a material with greater elasticity, such as silicone, to enable more rapid deformation and a larger deformation amplitude, thereby triggering the needle withdrawal action in a timely manner.

[0052] It should be noted that the deformation mentioned here refers to the deformation of the clamping portion 41 as a whole, which causes at least a portion of the clamping portion 41 to move away from the puncture unit 3. In other words, the clamping and release of the puncture unit 3 by the clamping portion 41 is achieved by movement, and the purpose of the deformation is to cause the clamping portion 41 to be displaced.

[0053] Based on this, the present application does not limit the method for driving the clamping portion 41 to expand outward to release the puncture unit 3. In one embodiment, as shown in FIG3 , the clamping portion 41 expands by cooperating with the guide surface 231 of the release section 23 of the limiting sleeve 2 through the inclined section 412. The guide surface 231 guides the inclined section 412 so that the end of the clamping portion 41 slides out of the limiting channel 21 and expands outward. In another embodiment, the clamping portion 41 itself is made of a material with high elasticity (such as silicone). In the initial position, the clamping portion 41 is squeezed by the limiting sleeve 2 and deformed to clamp the puncture unit 3. When the clamping portion 41 slides out of the limiting channel 21, due to the loss of the squeezing of the limiting sleeve 2, the clamping portion 41 can automatically expand outward under the action of its own elastic force to release the puncture unit 3. Of course, the above two embodiments can also be implemented in combination, that is, the clamping portion 41 is made of a material with greater elasticity, and a release section 23 is provided at one end of the limiting sleeve 2 to improve the movement guidance of the clamping portion 41.

[0054] In other embodiments, a trigger structure may also be provided on the movement path of the clamping portion 41 along the first direction. During the movement of the clamping portion 41, the trigger structure may extend between the clamping portions 41 and push the clamping portions 41 outward, so that the clamping portions 41 expand outward under the squeezing action of the trigger structure from the inside out. This is not limited here.

[0055] Furthermore, as shown in FIG4 , a guide section 24 is provided at one end of the fixed section 411 toward the first end, and the cross-sectional area of ​​the guide section 24 gradually increases along the first direction. The cross-sectional size of the guide section 24 gradually increases along the first direction, so that the guide section 24 is more compatible with the shape of the inclined section 412 of the clamping portion 41. As a result, when the clamping portion 41 is in the initial position, the two fit better, thereby increasing the contact area between the clamping portion 41 and the guide section 24, improving the positional stability of the clamping portion 41, and preventing the clamping portion 41 and the guide section 24 from slipping. At the same time, the guide section 24 can abut against the inclined section 412 to limit the clamping portion 41 along the second direction. In this way, before triggering, the clamping portion 41 is bidirectionally limited in the first and second directions, and the inner wall of the limiting channel 21 also limits the clamping portion 41 perpendicular to the first direction, so that the clamping portion 41 is stably accommodated within the limiting channel 21 without shaking or moving.

[0056] In a preferred embodiment of this embodiment, as shown in Figures 1 and 4, a support member 14 is further disposed within the housing 1. The support member 14 abuts against the release section 23 to restrict movement of the limiting sleeve 2 in the first direction. The support member 14 abuts against one end of the limiting sleeve 2 toward the second end, restricting the position of the limiting sleeve 2, causing it to remain stationary relative to the housing 1 while allowing the clamping portion 41 to move relative to the limiting sleeve 2 and slide out of the limiting passage 21. The abutment of the support member 14 prevents the limiting sleeve 2 from being driven by the clamping portion 41 within it, allowing the clamping portion 41 to clamp and release the puncture unit 3 based on its relative position to the limiting sleeve 2.

[0057] Specifically, as shown in FIG4 , the support member 14 is a support sleeve sleeved on the outside of the limiting sleeve 2 , and an opening for the clamping portion 41 to pass through is provided at one end of the support sleeve toward the second end, and the end of the release section 23 abuts against the edge of the opening.

[0058] Preferably, as shown in FIG4 , the limiting sleeve 2 is further provided with a guide channel 25 extending in the first direction, and the needle-assisting unit 4 further includes a guide portion 42 connected to the clamping portion 41 and located within the guide channel 25. Regardless of the position to which the clamping portion 41 moves, the guide portion 42 of the needle-assisting unit 4 remains within the guide channel 25, cooperating with the inner wall of the guide channel 25. This allows the guide channel 25 to guide the movement of the clamping portion 41 in the first direction, making the clamping portion 41 more stable during movement, reducing shaking of the puncture unit 3, and alleviating pain to the user during needle insertion.

[0059] As shown in Figure 4, the cross-sectional area of ​​the guide portion 42 is smaller than the cross-sectional area of ​​the clamping portion 41, so as to reduce the overall size of the needle-assisting unit 4 and save the internal space of the shell 1. The guide portion 42 is arranged at the end of the clamping portion 41 facing the first end. As shown in Figures 1 to 3, the needle-assisting unit 4 also includes an outer tube 43, and the clamping portion 41 and the guide portion 42 are both located on the inner side of the limiting sleeve 2, and the outer tube 43 is sleeved on the outer side of the limiting sleeve 2. Specifically, a guide structure can be provided on the inner wall of the shell 1 and the outer wall of the outer tube 43 respectively, so that the shell 1 and the outer tube 43 cooperate to guide the movement of the outer tube 43, thereby improving the overall movement guiding effect of the needle-assisting unit 4 and allowing the needle-assisting unit 4 to move stably along the first direction.

[0060] In a preferred embodiment, as shown in FIG3 , the clamping portion 41 includes a fixed end toward the second end and a swinging end toward the first end, wherein the swinging end can swing around the fixed end to clamp or release the puncture unit 3. The clamping portion 41 is a structure capable of elastic deformation. When the clamping portion 41 is completely located inside the limiting sleeve 2, the fixed end approaches the puncture unit 3 under the pressure of the inner wall of the limiting sleeve 2 and clamps the puncture unit 3. When the clamping portion 41 moves in the first direction and causes the fixed end to slide out of the limiting channel 21, the fixed end swings outward, thereby loosening and releasing the puncture unit 3. The swinging manner of the fixed end enables it to quickly rebound and react when sliding out of the limiting channel 21, thereby improving the sensitivity of the reaction, helping to trigger the puncture unit 3 to perform the needle withdrawal operation more promptly, making the switching between needle insertion and needle withdrawal smoother and shortening the duration of the entire implantation process.

[0061] Preferably, as shown in Figures 1 to 3, a trigger unit 7 is provided at the first end, and the trigger unit 7 can move along the first direction to trigger the auxiliary needle unit 4 to drive the puncture unit 3 along the first direction to partially penetrate the sensor 813 into the host body. The user presses the trigger unit 7 along the first direction, so that the trigger unit 7 triggers the auxiliary needle unit 4. After the auxiliary needle unit 4 is triggered, it drives the puncture unit 3 to move along the first direction toward the implantation port 93. The pressing of the trigger unit 7 and the implantation direction of the puncture unit 3 are the same, which not only makes the arrangement of the auxiliary needle structure inside the housing 1 simpler and more compact, but also makes the movement of each component more reliable, and helps to ensure the stability of the puncture unit 3 during movement, and avoids shaking of the puncture unit 3 during implantation, which increases the user's pain.

[0062] Furthermore, as shown in Figures 1 to 3, the trigger unit 7 includes a trigger button 71 and an elastic member 72 connected to the trigger button 71. The elastic member 72 has a locked state and an unlocked state. In the locked state, the elastic member 72 cooperates with the auxiliary needle unit 4 to restrict the movement of the auxiliary needle unit 4. Movement of the trigger button 71 in a first direction causes the elastic member 72 to deform or move, switching to the unlocked state, thereby releasing the lock on the auxiliary needle unit 4. When not triggered, the elastic member 72 cooperates with the auxiliary needle unit 4, and the movement of the auxiliary needle unit 4 is limited by the elastic member 72. This allows the auxiliary needle unit 4 to remain stably in its initial position during transportation and storage, reducing the possibility of false triggering. When the user presses the trigger button 71, the elastic member 72 deforms or moves, switching to the unlocked state, disengaging from the auxiliary needle unit 4, and the auxiliary needle unit 4 is released and can move in the first direction for implantation.

[0063] Specifically, as shown in Figure 2, the housing 1 is provided with a mounting channel 16 for installing the trigger button 71, and a limiting protrusion 12 is provided on the inner wall of the mounting channel 16. The elastic member 72 extends into the mounting channel 16 and has a matching rib 74 protruding along a direction perpendicular to the first direction. The elastic member 72 can be elastically deformed under the push of the limiting protrusion 12 so that the matching rib 74 and the limiting protrusion 12 are stopped or loosened.

[0064] As shown in Figures 1 to 3, the elastic member 72 is fixed at one end and free at the other. The free end cooperates with the auxiliary needle unit 4 to limit the position of the auxiliary needle unit 4. Specifically, as shown in Figures 1 and 2, the free end of the elastic member 72 is provided with a hook 73. The auxiliary needle unit 4 has a locking structure. The locking structure can be a through hole, a slot, or a hook-shaped structure that cooperates with the hook 73. When the elastic member 72 is squeezed, the free end swings, thereby disengaging from the locking structure. The mounting channel 16 guides the movement of the trigger button 71 and the elastic member 72, allowing them to move along the extension direction (first direction) of the mounting channel 16. The inner wall of the mounting channel 16 is provided with a limiting protrusion 12 in the movement path of the mating rib 74. When the mating rib 74 moves along the first direction to the limiting protrusion 12, the elastic member 72 is squeezed by the limiting protrusion 12 and deformed. The free end of the elastic member 72 swings in a direction perpendicular to the first direction, thereby disengaging the hook 73 from the needle-assisting unit 4. As the elastic member 72 continues to move in the first direction, the mating rib 74 passes over the limiting protrusion 12. The limiting protrusion 12 no longer squeezes the mating rib 74, and the elastic member 72 rebounds to its original position.

[0065] In other embodiments, the elastic member 72 may also be configured as a structure capable of translationally moving in a direction perpendicular to the first direction, so that it translates when squeezed, thereby releasing the engagement with the auxiliary needle unit 4.

[0066] Furthermore, as shown in Figures 1 to 3, the elastic member 72 is provided with a stop rib 75 on one side of the mating rib 74 near the first end. A receiving groove 76 for accommodating the limiting protrusion 12 is formed between the stop rib 75 and the mating rib 74. When the user presses the trigger button 71, causing the mating rib 74 on the elastic member 72 to pass over the limiting protrusion 12, the needle-assisting unit 4 is triggered. The limiting protrusion 12 then slides into the receiving groove 76 and abuts against the stop rib 75. The stop rib 75 and the mating rib 74 are located on either side of the limiting protrusion 12, limiting it in two directions. This restricts the trigger unit 7 in this position, preventing it from moving further in the first direction or the second direction, thereby preventing the user from feeling a sense of loss after pressing the trigger unit 7. At the same time, the trigger unit 7 also plays the role of abutting against the pusher 5 for driving the auxiliary needle unit 4 and the reset member 6 for driving the puncture unit 3. The trigger unit 7 is fixed in position after being triggered, and can provide a stable abutting force to the pusher 5 and the reset member 6, ensuring the stable operation of the pusher 5 and the reset member 6.

[0067] Specifically, as shown in Figures 1 to 3, the needle-assisting unit 4 includes a pusher 5 and a reset member 6. The pusher 5 is used to drive the clamping portion 41 to move in a first direction, and the reset member 6 is used to drive the puncture unit 3 to move in a second direction. The pusher 5 is sleeved on the outer periphery of the reset member 6. The pusher 5 is sleeved on the outer periphery of the reset member 6, so that the arrangement positions of the pusher 5 and the reset member 6 are more concentrated. Compared with the way the two are arranged side by side, the space occupied along the radial direction of the housing 1 can be reduced, thereby helping to reduce the radial size of the housing 1 and achieve miniaturization. This makes the size of the in-vivo blood glucose monitoring device more compact and lightweight, convenient for users to grasp with one hand, and more convenient to use and store.

[0068] As shown in FIG. 1 , one end of the pushing member 5 and the resetting member 6 are both in contact with the trigger unit 7 , and the resetting member 6 at least partially overlaps with the pushing member 5 in the first direction.

[0069] Preferably, as shown in FIG1 , the pushing member 5 and the reset member 6 are both springs, wherein, in the initial state, the pushing member 5 is in a compressed state, forming a thrust along the first direction on the auxiliary needle unit 4. The reset member 6 is not deformed in the initial state, and during the movement of the auxiliary needle unit 4 and the puncture unit 3 along the first direction, the reset member 6 is gradually stretched, forming a pulling force along the second direction on the puncture unit 3. This ensures that the puncture unit 3 will not withdraw the needle prematurely before the end of the implantation process, resulting in implantation failure, thereby improving the implantation success rate. At the same time, it can prevent the reset member 6 from being in a deformed state for a long time and causing fatigue, thereby improving the needle withdrawal effect. Alternatively, the reset member 6 can also be designed to be stretched in the initial state to increase the driving force of the reset member 6 on the puncture unit 3.

[0070] As shown in Figure 1 , the needle-assisting unit 4 is provided with a mounting groove 44, into which one end of the pusher 5 is received. This ensures more stable contact between the pusher 5 and the needle-assisting unit 4, allowing the pusher 5 to exert a stable pushing force on the needle-assisting unit 4. The multiple clamping portions 41 define a placement channel, and the puncture unit 3 includes a needle 32 and a needle hub 31. The needle hub 31 and the reset member 6 are disposed within the placement channel.

[0071] As a preferred embodiment of the present application, as shown in Figures 3, 5 to 10, the in vivo blood glucose monitoring device also includes a bottom shell 9 fixed to the second end, and the bottom shell 9 is provided with an implantation port 93; and an in vivo monitoring unit 8, the in vivo monitoring unit 8 includes a first electronic unit 81 and a second electronic unit 82, the first electronic unit 81 includes a sensor 813, and the second electronic unit 82 includes a signal processing module 825, the first electronic unit 81 is fixed inside the outer shell 1, and the second electronic unit 82 is fixed to the bottom shell 9. During the movement of the auxiliary needle unit 4 along the first direction, the sensor 813 partially penetrates into the host body and the first electronic unit 81 and the second electronic unit 82 are electrically connected.

[0072] When shipped from the factory, the first electronic unit 81 and second electronic unit 82 of the on-body monitoring unit 8 are separated from each other and spaced apart along a first direction. After the user triggers the device, the first electronic unit 81 can move along the first direction along with the needle-assisting unit 4 and the puncture unit 3. As the puncture unit 3, carrying the sensor 813 inside the first electronic unit 81, penetrates the host body, the first electronic unit 81 and the second electronic unit 82 are simultaneously electrically connected. This allows a single trigger operation to simultaneously complete the assembly of the on-body monitoring unit 8, the electrical connection between the first electronic unit 81 and the second electronic unit 82, and the implantation of the sensor 813. This greatly simplifies the user's implantation process, reduces the product's operational difficulty, and lowers the user's learning curve. It also shortens the entire implantation phase, helping to alleviate the user's fear while waiting for implantation. Thus, when using the on-body blood glucose monitoring device of the present application, the user only needs to trigger the device once to simultaneously connect the first electronic unit 81 and the second electronic unit 82, implant the sensor 813, and complete the entire implantation process. This eliminates the need for additional assembly of the upper and lower housings 821, improving the user experience.

[0073] In addition, the needle-assisting unit 4, the puncture unit 3 and the first electronic unit 81 are fixed in the outer shell 1, and the second electronic unit 82 is fixed in the bottom shell 9, thereby dividing the in vivo blood glucose monitoring device into two modules, among which the puncture unit 3, the sensor 813 and other components with higher sterilization requirements are concentrated in one module (inside the outer shell 1). Therefore, before leaving the factory, the outer shell 1 and the bottom shell 9 modules can be sterilized with different processes or levels respectively. After the sterilization is completed, the outer shell 1 and the bottom shell 9 are assembled into one. The problem of failure of the sensor 813 or electronic components during the sterilization process is avoided. And when leaving the factory, the bottom shell 9 and the outer shell 1 have been fixed. The user does not need to perform the fixing operation of the bottom shell 9 and the outer shell 1 before use. The user only needs to directly perform the triggering operation, which reduces the operating steps and improves the user experience.

[0074] It should be noted that, as shown in Figures 5 to 8, the first electronic unit 81 also includes an upper shell 811, and the second electronic unit 82 also includes a lower shell 821. The upper shell 811 and the lower shell 821 are both provided with a through hole 819 corresponding to the needle 32 of the puncture unit 3, and the lower shell 821 is provided with an adhesive layer 822 on the side facing the second end for bonding and fixing with the host skin. This application does not limit the assembly relationship between the puncture unit 3 and the first electronic unit 81 in the untriggered state. As shown in Figure 1, in one embodiment, in the untriggered state, the needle 32 of the puncture unit 3 has passed through the through hole 819 of the upper shell 811, and the contact pin 8132 of the sensor 813 is accommodated inside the needle 32. Therefore, after the needle-assisting unit 4 is triggered, it can push the first electronic unit 81 to move together in the first direction, and finally complete the assembly of the first electronic unit 81 and the second electronic unit 82. In another embodiment, the needle 32 of the puncture unit 3 and the first electronic unit 81 are arranged separately, that is, after the auxiliary needle unit 4 is triggered, it first moves a certain distance in the first direction, passes the needle 32 through the through hole 819 of the upper shell 811, and then pushes the first electronic unit 81 to move, and finally assembles with the second electronic unit 82.

[0075] In addition, the present application does not limit the time sequence of the electrical connection between the first electronic unit 81 and the second electronic unit 82, and the partial penetration of the sensor 813 into the host body. For example, in the process of the auxiliary needle unit 4, the puncture unit 3 and the first electronic unit 81 moving together along the first direction, the first electronic unit 81 and the second electronic unit 82 may complete the electrical connection first. At this time, the auxiliary needle unit 4 and the puncture unit 3 have not yet moved into place. As the movement continues, the puncture unit 3 penetrates into the host body to complete the implantation. That is to say, the electrical connection between the first electronic unit 81 and the second electronic unit 82 occurs before the puncture unit 3 penetrates into the host body. For another example, during the movement of the auxiliary needle unit 4, the puncture unit 3 and the first electronic unit 81 together along the first direction, the puncture unit 3 first penetrates into the host body. At this time, the auxiliary needle unit 4 and the puncture unit 3 have not yet moved into place. As the movement continues, the upper shell 811 and the lower shell 821 are assembled again. At the same time, the first electronic unit 81 and the second electronic unit 82 are electrically connected. That is to say, the puncture unit 3 penetrates into the host body before the electrical connection between the first electronic unit 81 and the second electronic unit 82 occurs. In addition, the above two steps can also occur simultaneously. However, regardless of the situation in the above examples, for the user, only a single trigger operation is required, and no additional operation is required. Therefore, the situations in the above examples are all within the scope of protection of this application.

[0076] Preferably, as shown in Figures 6, 7, and 8, the sensor 813 is disposed on the upper housing 811, and the signal processing module 825 is disposed on the lower housing 821. The upper housing 811 and the lower housing 821 are secured by a snap-fit ​​connection, thereby simplifying the process of securing the two. Manual connection is unnecessary, and securement can be achieved solely by the power of the needle-assisting unit 4. Specifically, as shown in Figures 6, 7, and 8, the upper housing 811 is provided with a buckle 818, and the lower housing 821 is provided with a latch 823. When the upper housing 811 collides with the needle-assisting unit 4 in a first direction, the buckle 818 slides into the latch 823 under the impact force, securing the upper and lower housings 811 and 821. Of course, the buckle 818 can also be provided on the lower housing 821, and the latch 823 can be provided on the upper housing 811 to achieve the same secure connection.

[0077] Specifically, as shown in Figures 6 and 7, the buckle 818 is provided with a guide surface on the side facing the bayonet 823, and the bayonet 823 is provided with a retaining rib 824 on the side close to the buckle 818. The buckle 818 first contacts the retaining rib 824 and expands toward the outer shape under the extrusion of the retaining rib 824. When the buckle 818 continues to move to the bayonet 823, it loses the extrusion of the retaining rib 824, shrinks and deforms under the action of its own elasticity, and is locked into the bayonet 823.

[0078] Preferably, as shown in Figures 6, 7, and 8, one of the upper shell 811 and the lower shell 821 is provided with a sealing rib 817, and the other is provided with a sealing groove 826. A sealing member 827 is disposed within the sealing groove 826. The sealing rib 817 can extend into the sealing groove 826 and abut against the sealing member 827 to achieve a seal. The sealing rib 817 and the sealing member 827 within the sealing groove 826 are provided in correspondence. When the upper shell 811 contacts the lower shell 821 along a first direction, the sealing rib 817 extends into the sealing groove 826, abuts against the sealing member 827, and squeezes the sealing member 827 to deform, thereby achieving a seal between the upper and lower shells 821.

[0079] Specifically, as shown in Figures 6 and 7, the sealing rib 817 is provided on the upper shell 811, and the sealing groove 826 is provided on the lower shell 821. The sealing member 827 is an O-ring and is placed in the sealing groove 826. The positions of the sealing rib 817 and the sealing groove 826 can also be interchanged, that is, the sealing rib 817 is provided on the lower shell 821, and the sealing groove 826 is provided on the upper shell 811 accordingly, but this is not limited here. Preferably, as shown in Figure 7, the groove walls on both sides of the sealing groove 826 extend obliquely so that the width of the groove opening is greater than the width of the groove bottom. This guides the insertion of the sealing rib 817, making the insertion of the sealing rib 817 and the sealing groove 826 smoother and reducing the sense of jamming during the insertion process.

[0080] Furthermore, as shown in Figure 6, sensor 813 includes a thin sheet-like substrate 8131 and a stylus 8132 extending downward and integrating multiple electrodes. It is designed to be inserted into the human epidermis and analyze the concentration of glucose and other analytes in an individual through electrochemical reactions in the tissue fluid within the epidermis. Conductive silicone 815 is provided on the underside of substrate 8131 to transmit the electrical signal generated by the electrochemical reaction in sensor 813 to signal processing module 825. Sealing silicone 816 is also provided on the underside of conductive silicone 815, primarily for waterproofing the electrode contacts of sensor 813. Together with conductive silicone 815, it provides a seal and enables electrical connection to signal processing module 825.

[0081] As shown in Figures 3, 9, and 10, in one embodiment, the sidewalls of the bottom shell 9 are provided with a slot 91, and the sidewalls of the outer shell 1 are provided with a snap-fit ​​buckle 15 to secure the two together. The snap-fit ​​buckle 15 can be provided on the inner wall of the outer shell 1, so that the sidewall of the bottom shell 9 extends into the interior of the outer shell 1 and is secured thereto. The snap-fit ​​buckle 15 can also be provided on the outer wall of the outer shell 1, so that the outer shell 1 is deeply secured within the bottom shell 9. The outer shell 1 and the bottom shell 9 can also be secured together using other methods, such as threaded connections, which are not limited here.

[0082] As shown in FIG1 , the outer shell 1 is provided with an enlarged diameter section 13 at the second end to leave space for the installation of the bottom shell 9 and to avoid interference between the bottom shell 9 and the auxiliary unit or puncture unit 3 inside the outer shell 1 .

[0083] Furthermore, as shown in Figures 9 and 10, the bottom shell 9 has a fixing portion that is interference-fitted with the second electronic unit 82. Specifically, as shown in Figures 9 and 10, the bottom shell 9 has a through opening 94, and a plurality of elastic ribs 95 are spaced along the edge of the through opening 94. The elastic ribs 95 form a mounting position for fixing the lower shell 821 of the second electronic unit 82. After the lower shell 821 is installed, the elastic ribs 95 are squeezed outward. Under the action of their own elastic force, the elastic ribs 95 squeeze inward and clamp the lower shell 821. When the lower shell 821 is pushed by the upper shell 811 in the first direction, or when the adhesive layer 822 of the lower shell 821 adheres to the host's skin, the lower shell 821 can break away from the clamping of the elastic ribs 95 and fall off from the bottom shell 9.

[0084] As shown in Figures 1 and 5, the needle assist unit 4 is provided with a hook 45. A fixing groove 812 is provided on the circumference of the upper shell 811. The hook 45 engages and secures with the fixing groove 812, securing the upper shell 811 to the needle assist unit 4 and enabling movement thereof. The walls of the fixing groove 812 can stop and limit the hook 45, restricting rotation of the upper shell 811 relative to the needle assist unit 4. Furthermore, a clearance opening 92 is provided on the outer side of the opening 94 of the bottom shell 9. A trigger rib is provided on one side of the clearance opening 92 near the center of the bottom shell 9. When the needle assist unit 4, carrying the upper shell 811, moves to the bottom shell 9, the trigger rib squeezes the hook 45, causing it to expand and deform outward, disengaging from the fixing groove 812 and releasing the upper shell 811. Simultaneously, the hook 45 enters the clearance opening 92.

[0085] The present application does not limit the location of the second electronic unit 82, which can be located at the implantation port 93. When the needle-assisting unit 4 pushes the first electronic unit 81 to move in the first direction to this point, the first electronic unit 81 is electrically connected to the second electronic unit 82, and the second electronic unit 82 is pressed to adhere to and fix to the host's skin, and detach from the bottom shell 9. The second electronic unit 82 can also be set at a certain distance from the implantation port 93. When the first electronic unit 81 moves to the second electronic unit 82, the two are assembled and electrically connected, and then the second electronic unit 82 is pushed to detach from the bottom shell 9. The in-body monitoring unit 8 continues to move as a whole in the first direction until the adhesive layer 822 of the second electronic unit 82 is fixed to the host's skin.

[0086] Preferably, as shown in FIG6 , the first electronic unit 81 further includes an upper housing 811 and a battery 814. The battery 814 and sensor 813 are secured to the upper housing 811, and the battery 814 is electrically connected to the signal processing module 825. The battery 814 primarily powers the signal processing module 825 of the second electronic unit 82. Before the user triggers implantation, the first and second electronic units 81 and 82 are separated, so the battery 814 is not electrically connected to the signal processing module 825. Only after the user triggers implantation does the battery 814 establish an electrical connection with the signal processing module 825. This reduces energy loss in the battery 814 before use and increases storage time.

[0087] In a preferred embodiment, as shown in Figures 9 and 10, the in vivo blood glucose monitoring device also includes a bottom cover 96 that is detachably fixed to the bottom shell 9, and the bottom cover 96 covers the implantation port 93. The bottom cover 96 is detachably connected to the bottom shell 9. When leaving the factory, the bottom cover 96 is fixed to the bottom shell 9. The outer shell 1, the bottom shell 9 and the bottom cover 96 together form a relatively sealed environment to prevent external dust and bacteria from entering the interior during storage and transportation, thereby ensuring the cleanliness of the internal components. Before the user implants the device, the bottom cover 96 needs to be removed from the bottom shell 9 and the implantation port 93 opened so that the internal sensor 813 and the puncture unit 3 can penetrate into the host body through the implantation port 93.

[0088] When using the in-vivo blood glucose monitoring device of the present application, the user only needs to perform two steps. First, remove the bottom cover 96 from the bottom shell 9 to expose the implantation port 93, and place the implantation port 93 close to the skin. Then, trigger the needle-assisting unit 4, and the electrical connection between the first electronic unit 81 and the second electronic unit 82, as well as the implantation of the sensor 813, can be achieved simultaneously, completing the entire implantation process. There is no need to perform additional operations to assemble the upper and lower shells 821, thereby improving the user experience. Specifically, as shown in Figure 9, the bottom cover 96 and the bottom shell 9 are fixed by a snap connection. Of course, the bottom cover 96 can also be fixed to the bottom shell 9 by means of threaded connection, interference fit, plug-in connection, etc., which are not limited here.

[0089] Preferably, as shown in FIG9 , the bottom cover 96 is provided with a support column 961 extending toward the bottom shell 9. The support column 961 contacts the second electronic unit 82 to support the second electronic unit 82. Before the user removes the bottom cover 96, the support column 961 supports the second electronic unit 82, ensuring that the second electronic unit 82 is stably fixed in the bottom shell 9 before the implant is triggered, thereby preventing it from falling off.

[0090] The above description is only an embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. An in-body blood glucose monitoring device, characterized in that: include: a housing having a first end and a second end oppositely disposed along a first direction, wherein the second end is provided with a mating opening; a limiting sleeve, disposed in the housing, the limiting sleeve being provided with a limiting channel extending along the first direction; a puncture unit, the puncture unit being disposed inside the housing and configured to partially puncture the sensor into the host; and An auxiliary needle unit, the auxiliary needle unit includes at least two clamping parts, the clamping parts are located outside the puncture unit and are configured to limit the movement of the puncture unit relative to the clamping parts, the clamping parts are located in the limiting channel and can move along the first direction in the limiting channel; when the clamping parts move to a release position relative to the limiting channel, the clamping parts release the puncture unit so that the puncture unit moves along a second direction relative to the clamping parts, and the second direction is opposite to the first direction.

2. The in-body blood glucose monitoring device according to claim 1, wherein: The limiting sleeve includes a clamping section and a release section. In the first direction, the cross-sectional area of ​​the clamping section is the same, and the cross-sectional area of ​​the release section gradually increases. The clamping portion includes an inclined section and a fixed section. In the first direction, the cross-sectional area of ​​the inclined section gradually increases, and the cross-sectional area of ​​the fixed section is the same.

3. The in-body blood glucose monitoring device according to claim 2, characterized in that: The release section is closer to the second end than the clamping section; the fixing section cooperates with the clamping section to clamp the puncture unit, and when the clamping portion moves to the release position, the inclined section cooperates with the release section to release the puncture unit.

4. The in-body blood glucose monitoring device according to claim 3, characterized in that: A guide section is further provided at one end of the fixing section facing the first end, and a cross-sectional area of ​​the guide section gradually increases along the first direction.

5. The in-body blood glucose monitoring device according to claim 3, characterized in that: A support member is further provided inside the shell, and the support member abuts against the release section to limit the movement of the limiting sleeve along the first direction.

6. The in-body blood glucose monitoring device according to claim 1, characterized in that: The limiting sleeve is further provided with a guide channel extending along the first direction, and the needle-assisting unit further includes a guide portion connected to the clamping portion and located in the guide channel.

7. The in-body blood glucose monitoring device according to claim 1, wherein: The clamping portion includes a fixed end facing the second end and a swing end facing the first end, and the swing end can swing around the fixed end to clamp or release the puncture unit.

8. The in-body blood glucose monitoring device according to claim 1, wherein: The first end is provided with a trigger unit, and the trigger unit can move along the first direction to trigger the needle-assisting unit to drive the puncture unit along the first direction to puncture the sensor part into the host body.

9. The in-body blood glucose monitoring device according to claim 1, wherein: The in-body blood glucose monitoring device also includes a trigger unit arranged at the first end, the trigger unit includes a trigger button and an elastic member connected to the trigger button, the elastic member includes a locked state and an unlocked state, in the locked state, the elastic member cooperates with the auxiliary needle unit to limit the movement of the auxiliary needle unit, and the trigger button moves along the first direction to deform or move the elastic member and switch to the unlocked state to release the lock of the auxiliary needle unit.

10. The in-body blood glucose monitoring device according to claim 9, characterized in that: The shell is provided with a mounting channel for installing the trigger button, and a limiting protrusion is provided on the inner wall of the mounting channel. The elastic member extends into the mounting channel and has a matching rib protruding perpendicular to the first direction. The elastic member can be elastically deformed under the push of the limiting protrusion so that the matching rib and the limiting protrusion are stopped or loosened.

11. The in-body blood glucose monitoring device according to claim 1, characterized in that: The needle-assisting unit includes a pushing member and a resetting member. The pushing member is used to drive the clamping portion to move along the first direction, and the resetting member is used to drive the puncture unit to move along the second direction. The pushing member is sleeved on the outer circumference of the resetting member.

12. The in-body blood glucose monitoring device according to claim 11, characterized in that: The restoring member at least partially overlaps with the pushing member in the first direction.

13. The in-body blood glucose monitoring device according to claim 1, wherein: It also includes a bottom shell fixed to the second end, the bottom shell is provided with an implantation port; and an in-body monitoring unit, the in-body monitoring unit includes a first electronic unit and a second electronic unit, the first electronic unit includes a sensor, the second electronic unit includes a signal processing module, the first electronic unit is fixed inside the shell, the second electronic unit is fixed to the bottom shell, during the movement of the auxiliary needle unit along the first direction, the sensor part penetrates into the host body and the first electronic unit and the second electronic unit are electrically connected.

14. The in-body blood glucose monitoring device according to claim 13, wherein: The first electronic unit further includes an upper housing and a battery. The battery and the sensor are fixed to the upper housing. The battery can be electrically connected to the signal processing module.

15. The in-body blood glucose monitoring device according to claim 13, characterized in that: The in-body blood glucose monitoring device further comprises a bottom cover detachably fixed to the bottom shell, wherein the bottom cover covers the implantation port.

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