Dynamic continuous blood glucose monitor

Abstract

The dynamic continuous blood glucose monitor comprises a needle assisting device assembly, the needle assisting device assembly comprises a main shell, a push rod base and a push rod, the push rod base and the push rod are movably arranged in the main shell, and an emission spring is arranged between the push rod base and the push rod; the needle assembly comprises a needle clamp and a needle seat which are fixedly assembled, and a needle withdrawing spring is arranged between the needle clamp and the push rod; and the bottom cover is detachably assembled on the main shell. The dynamic continuous blood glucose monitor has the advantages of being simple and reasonable in structural design and easy and convenient to operate, and during use, feeding and withdrawing of the auxiliary needle and smooth implantation of the sensor probe into the human body can be automatically completed only by pressing the main shell; the detachable bottom cover structural design avoids potential safety hazards caused by exposure of structures such as a CGM sensor and an auxiliary needle, and after the device is used once, when the device needs to be used again, a new CGM module is loaded below the main shell again, meanwhile, structures such as the push rod, the push rod seat and the needle clamp are reset, and the bottom cover is screwed back, so that the device is convenient to use. Therefore, the dynamic continuous blood glucose monitor can be reused, and waste is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of blood sugar detection, and in particular to a dynamic continuous blood sugar monitor. Background Art

[0002] CGM (Continuous Glucose Monitoring) stands for continuous blood glucose monitoring system, which is a medical device used to continuously monitor the blood glucose level of diabetic patients. It is currently generally used in a dynamic blood glucose meter. A dynamic blood glucose meter usually consists of a blood glucose needle-assisting module and a dynamic blood glucose detection module (including CGM). For example, a dynamic blood glucose meter disclosed in Chinese patent application with publication number CN111700626A includes a sensor, a detector, and a needle-assisting device.

[0003] Among them, the dynamic blood glucose detection module includes an auxiliary needle structure and a soft needle structure. The soft needle structure (i.e., the sensor detection head) is inside the auxiliary needle structure, and it needs to be inserted into the tester's body with the help of the auxiliary needle structure, and left in the body for continuous blood glucose monitoring. In actual applications, the dynamic blood glucose meter is usually purchased and used by the tester himself, and the general user does not have the operating experience of medical staff. After completing the injection of the soft needle probe, since the auxiliary needle structure is connected to the blood glucose auxiliary needle module, the operator needs to pick up the blood glucose auxiliary needle module to remove and take out the auxiliary needle structure (i.e., withdraw the needle). In this process, if the operation is improper, the auxiliary needle structure will shake, which will cause a tingling sensation to the user, and it is easy to increase the time that the auxiliary needle structure invades the tester's skin, causing more discomfort and pain to the user, and even infection may occur in severe cases, posing a safety hazard.

[0004] Based on this, it is necessary to invent a dynamic continuous blood glucose monitor that is convenient for users without medical care experience to operate and can realize automatic needle delivery and needle withdrawal operations. Summary of the invention

[0005] In order to overcome the technical problems described in the above-mentioned prior art, such as the general users are prone to operating errors when using the dynamic blood glucose meter and the blood glucose injection device lacks or is difficult to achieve the needle withdrawal function after the needle is implanted in the human body, the present invention provides a dynamic continuous blood glucose monitor.

[0006] The technical solution adopted by the present invention to solve the problem is:

[0007] A dynamic continuous blood glucose monitor, comprising:

[0008] The needle assisting device assembly comprises a main shell, a push rod seat and a push rod movably arranged in the main shell, a launching spring is arranged between the push rod seat and the push rod, the main shell is provided with a first clamping groove, and the push rod is provided with a first clamping buckle and a second clamping groove;

[0009] A needle assembly, the needle assembly comprising a fixedly assembled needle clamp and a needle seat, the needle clamp is provided with a second buckle, the needle seat is provided with an auxiliary needle, and a needle withdrawal spring is provided between the needle clamp and the push rod;

[0010] A bottom cover, the bottom cover can be detachably assembled on the main shell;

[0011] In the initial state, the first buckle is snapped into the first slot, the second buckle is snapped into the second slot, and the launching spring and the needle withdrawal spring are both in a compressed state; in the launching needle feeding state, the first buckle and the first slot are separated, and the launching spring is reset, so that the push rod and the needle clamp move along the first direction; in the returning needle withdrawal state, the second buckle and the second slot are separated, and the needle withdrawal spring is reset, so that the needle clamp moves along the second direction opposite to the first direction.

[0012] By adopting the above technical solution, the dynamic continuous blood glucose monitor of the present invention has at least three states during actual use, as follows:

[0013] In the initial state, the bottom cover is assembled on the main shell, and the needle assembly is protected by the bottom cover and the main shell; at this time, although the launching spring is in a compressed state and will exert a downward elastic force on the push rod, since the first buckle of the push rod is inserted into the first slot of the main shell, the push rod and the main shell are in a locked state.

[0014] In the state of launching and delivering needles, when the dynamic continuous blood glucose monitor needs to be used, the bottom cover is removed, and the bottom of the main shell is aligned with the injection site of the human body during launch. The dynamic continuous blood glucose monitor is started to disengage the first buckle of the push rod from the first slot of the main shell, and the launch spring is restored to its original state. The push rod is rapidly ejected downward under the elastic force of the launch spring, and at the same time, the needle assembly is driven to move rapidly downward. After ejection to the preset distance, the auxiliary needle of the needle seat penetrates into the human body, completing accurate and rapid needle delivery. At this time, although the needle withdrawal spring is in a compressed state and will exert an upward elastic force on the needle clamp, the needle clamp and the push rod are in a locked state due to the second buckle of the needle clamp and the second slot of the push rod.

[0015] In the return needle withdrawal state, after the launch and needle delivery are completed, the second buckle of the needle clamp and the second slot of the push rod are separated, and the needle withdrawal spring is restored to its original state. The needle clamp is quickly ejected upward under the elastic force of the needle withdrawal spring, and at the same time, the auxiliary needle of the needle seat is driven to move upward rapidly, so that the auxiliary needle quickly leaves the human body and returns to the assembly cavity of the main shell, realizing automatic recovery of the hard needle, leaving the CGM sensor probe inserted into the human body, and continuously and dynamically monitoring the human blood sugar.

[0016] Furthermore, the dynamic continuous blood glucose monitor also includes a CGM module, which is detachably mounted on a side of the push rod close to the bottom cover. The CGM module includes a sensor probe, and the sensor probe and the auxiliary needle are arranged correspondingly. A patch is provided on a side of the CGM module close to the bottom cover.

[0017] By adopting the above technical solution, when the push rod is ejected downward under the elastic force of the launching spring, the CGM module can be driven downward synchronously. After ejecting to a preset distance, the patch of the CGM module is adhered and fixed to the human skin, the needle of the needle assembly penetrates into the human body, and drives the probe of the CGM sensor into the human body, completing accurate and rapid needle delivery.

[0018] Furthermore, the needle seat is provided with a fourth slot, and the needle clamp is provided with a fourth buckle, and the fourth buckle is snapped into the fourth slot to ensure that the needle clamp and the needle seat are fixedly assembled and connected.

[0019] By adopting the above technical solution, fixed assembly between the needle clamp and the needle seat can be achieved, the structural design is simple and reasonable, and operations such as assembly, disassembly, replacement, and maintenance are convenient.

[0020] Furthermore, the dynamic continuous blood glucose monitor also includes a syringe, which is provided with a fifth slot; the bottom cover includes a base, which is provided with a fifth buckle; the fifth buckle is snapped into the fifth slot to fix the syringe inside the bottom cover; when the bottom cover is assembled and connected to the main shell, the auxiliary needle is located inside the syringe.

[0021] By adopting the above technical solution, when the dynamic continuous blood glucose monitor is in the initial state, the auxiliary needle extending from the needle seat is sealed and protected by the syringe in the bottom cover.

[0022] Furthermore, the main shell is provided with a first thread, the bottom cover is provided with a second thread, and the main shell and the bottom cover are threadedly connected; and a sealing ring is provided between the main shell and the bottom cover, and a moisture-proof block is provided on the outside of the syringe.

[0023] By adopting the above technical solution, a detachable assembly connection between the main shell and the bottom cover can be achieved, which is convenient for users to unscrew the bottom cover when needed, and convenient for users to reinstall the bottom cover after use. In addition, by providing a sealing ring and a moisture-proof block, the sealing of structures such as the needle assembly and the CGM module can be improved, thereby enhancing its waterproof performance when the dynamic continuous blood glucose monitor is not in use and extending the service life of the dynamic continuous blood glucose monitor.

[0024] In a preferred embodiment, the push rod seat is provided with a first top block, the first top block is provided with a first inclined surface, the push rod is provided with a second top block, the second top block is provided with a second inclined surface, and the first inclined surface and the second inclined surface are arranged correspondingly; wherein, the first top block is used to squeeze the second top block so that the first buckle is elastically deformed inwardly, thereby separating the first buckle and the first slot.

[0025] By adopting the above technical solution, the first top block on the push rod seat can be used to push the second top block on the push rod, so that the first buckle on the push rod is elastically deformed inward, and the first buckle and the first slot are separated, so that the launching spring is restored to its original state. The push rod is rapidly ejected downward under the elastic force of the launching spring, and at the same time drives the needle assembly to move rapidly downward. After being ejected to a preset distance, the auxiliary needle of the needle seat penetrates into the human body, completing accurate and rapid needle delivery.

[0026] Furthermore, a blocking piece is provided on a side of the push rod seat away from the first clamping slot, the blocking piece is used to prevent the first buckle from deforming inwards, and the blocking piece is an elastic structure.

[0027] By adopting the above technical solution, the first buckle inserted into the first slot can be reversely blocked and limited to avoid the first buckle being detached from the first slot due to other factors before the dynamic continuous blood glucose monitor is pressed to start, thereby causing the dynamic continuous blood glucose monitor to be misfired.

[0028] Furthermore, a rib is provided on the inner side of the main shell, the rib is provided with a third inclined surface, the push rod seat is provided with a spring sheet, and the spring sheet is provided with a fourth inclined surface; in an initial state, the third inclined surface and the fourth inclined surface are abutted against each other; when the rib applies an inward force to the spring sheet, the push rod seat can be driven to move along the second direction.

[0029] By adopting the above technical solution, before using the dynamic continuous blood glucose monitor, the spring sheet of the push rod seat limits the ribs of the main shell. Only when the main shell is pressed will the spring sheet be squeezed and elastically deformed, and the push rod seat will move upward, triggering a series of subsequent actions such as the push rod and needle clamp, thereby realizing the launching and needle delivery operation of the dynamic continuous blood glucose monitor.

[0030] Furthermore, a third buckle is provided on the inner side of the main shell, and a third buckle slot is provided on the push rod seat, and the third buckle is located in the third buckle slot; wherein the width of the third buckle slot in the second direction is greater than the length of the third buckle.

[0031] By adopting the above technical solution, a clearance distance can be formed between the upper and lower ends of the third buckle and the third slot, thereby achieving a relative limiting effect on the push rod seat while also enabling the push rod seat to move up and down inside the main shell, and the structural design is simple and reasonable.

[0032] Furthermore, the push rod seat is provided with a stop block, the stop block is provided with a fifth inclined surface, and the second buckle is provided with a sixth inclined surface, and the fifth inclined surface and the sixth inclined surface are arranged correspondingly; wherein, the stop block is used to squeeze the second buckle so that the second buckle elastically deforms inward, thereby separating the second buckle and the second slot.

[0033] By adopting the above technical solution, after the needle is launched and sent, the second buckle of the needle clamp hits the block of the push rod seat and deforms inward until the second buckle disengages from the second slot and the needle withdrawal spring returns to its original state. The needle clamp is quickly ejected upward under the elastic force of the needle withdrawal spring, and at the same time drives the needle assembly to move upward rapidly, so that the needle head of the needle assembly quickly leaves the human body, completing the needle head retraction, leaving the CGM module attached to the skin surface and the CGM sensor probe inserted into the human body, so as to continuously and dynamically monitor the human blood sugar.

[0034] In summary, through the above structural design, the specific working process and principle of the dynamic continuous blood glucose monitor provided by the present invention are as follows:

[0035] In the initial state, the bottom cover is installed under the main shell by threaded connection. The needle assembly and CGM sensor are protected by the bottom cover and the syringe inside the bottom cover. The sealing performance is good and the moisture-proof function can also be achieved. After the cover is tightened, the main shell can be locked so that it cannot be pressed, thereby preventing the user from mistakenly operating the launch and needle delivery when the dynamic continuous blood glucose monitor is not in use. When the dynamic continuous blood glucose monitor needs to be used, unscrew the bottom cover, and the auxiliary needle and other structures of the needle assembly are exposed. The ribs of the main shell are limited by the shrapnel of the push rod seat, and the first elastic buckle on the first push rod is stuck in the first slot of the main shell. Under the blocking effect of the baffle of the main shell, it is more firmly buckled on the first slot to prevent it from deforming inward. At this time, the launch spring and the needle withdrawal spring are both in a compressed state.

[0036] In the launching and needle delivery state, align the lower part of the main shell with the injection site of the human body, press the main shell, and the spring piece of the push rod seat is deformed inwardly under the squeezing force of the main shell ribs, so that the push rod seat moves upward. After moving a preset distance, the first protrusion of the push rod seat contacts and squeezes the second protrusion of the push rod to deform the first buckle of the push rod inwardly. When the first buckle disengages from the first slot of the main shell, the launching spring returns to its original state, and the push rod is rapidly ejected downward under the elastic force of the launching spring, while driving the needle assembly and the CGM module to move rapidly downward. After ejecting to the preset distance, the patch of the CGM module is adhered and fixed to the human skin, the needle head of the needle assembly penetrates into the human body, and drives the probe of the CGM sensor into the human body, completing accurate and rapid needle delivery.

[0037] In the return and needle withdrawal state, the second buckle of the needle clamp hits the block of the push rod seat, causing the second buckle to deform inward until the second buckle disengages from the second slot of the push rod, and the needle withdrawal spring returns to its original state. The needle clamp is quickly ejected upward under the elastic force of the needle withdrawal spring, and at the same time drives the needle assembly to move upward rapidly, so that the needle head of the needle seat quickly leaves the human body and returns to the assembly cavity of the main shell, realizing automatic recovery of the hard needle, leaving the CGM module attached to the skin surface and the CGM sensor probe inserted into the human body, so as to continuously and dynamically monitor the human blood sugar.

[0038] Therefore, compared with the prior art, the dynamic continuous blood glucose monitor provided by the present invention has at least the following technical effects:

[0039] During the process of launching and delivering the needle, the push rod moves along a vertical downward path under the elastic force of the launch spring and the guiding action of the push rod seat, thereby driving the needle clamp, needle seat and CGM module to launch downward quickly. The movement process before the needle of the needle seat pierces the human body is not interfered by any structure, which improves the stability and smoothness of the needle assembly, CGM module and other structures during movement. After launching and delivering the needle, the needle clamp and needle seat move along a vertical upward path under the elastic force of the needle withdrawal spring and the guiding action of the push rod seat. The switching process between delivering and withdrawing the needle is smoother and smoother, reducing the shaking that may occur when the needle is inserted and removed, thereby reducing the user's pain during the injection process. Therefore, the above structural design can ensure that the auxiliary needle of the needle seat is accurately and quickly launched, and is quickly and automatically retracted after the needle is delivered, reducing the time the needle stays in the patient's skin, thereby reducing the patient's discomfort and pain, and reducing the risk of infection caused by improper needle removal. In addition, after completing one use of the dynamic continuous blood glucose monitor, when it needs to be used again, a new CGM module is reloaded under the main shell, and the push rod, push rod seat, needle clamp and other structures are reset, and the bottom cover is screwed back, thereby reusing the dynamic continuous blood glucose monitor and avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a first cross-sectional schematic diagram of the dynamic continuous blood glucose monitor in the initial state of the present invention;

[0041] Figure 2 is a second cross-sectional schematic diagram of the dynamic continuous blood glucose monitor in the initial state of the present invention;

[0042] Figure 3 is a third cross-sectional schematic diagram of the dynamic continuous blood glucose monitor in the initial state of the present invention;

[0043] Figure 4 is a cross-sectional schematic diagram of the dynamic continuous blood glucose monitor of the present invention in a state ready for use;

[0044] Figure 5It is a first cross-sectional schematic diagram of the dynamic continuous blood glucose monitor in the transmitting and needle-feeding state of the present invention;

[0045] Figure 6 It is a second cross-sectional schematic diagram of the dynamic continuous blood glucose monitor in the transmitting and needle-feeding state of the present invention;

[0046] Figure 7 It is a cross-sectional schematic diagram of the dynamic continuous blood glucose monitor of the present invention in the state of returning to the original position and withdrawing the needle;

[0047] The meanings of the reference numerals are as follows:

[0048] 1. Main shell; 11. First slot; 12. Rib; 13. Third buckle; 14. First thread;

[0049] 2. Push rod seat; 21. First top block; 22. Blocking piece; 23. Spring piece; 24. Third card slot; 25. Blocking piece;

[0050] 3. Push rod; 31. First buckle; 32. Second clamping slot; 33. Second top block;

[0051] 4. needle assembly; 41. needle clamp; 411. second buckle; 412. fourth buckle; 42. needle seat; 421. fourth slot; 43. auxiliary needle;

[0052] 5. Launch spring;

[0053] 6. Needle withdrawal spring;

[0054] 7. CGM module; 71. sensor probe; 72. patch;

[0055] 8. bottom cover; 81. bottom cover thread; 82. base; 821. fifth buckle; 83. sealing ring; 84. moisture-proof block;

[0056] 9. Syringe; 91. Fifth slot. DETAILED DESCRIPTION

[0057] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0058] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0060] See also Figure 1 As shown, according to an embodiment of the present invention, the dynamic continuous blood glucose monitor includes a needle assist assembly, a needle assembly 4 and a bottom cover 8. The needle assist assembly is used to safely and accurately insert the auxiliary needle 43 on the needle assembly 4 and the sensor probe 71 on the CGM sensor 7 into the subcutaneous tissue of the human body for dynamic continuous blood glucose monitoring; the bottom cover 8 is used to seal and protect the needle assembly 4, CGM module 7 and other structures in the needle assist assembly.

[0061] Specifically by Figure 1-Figure 3 As shown, the needle assisting device assembly includes a main shell 1, a push rod seat 2 and a push rod 3. The push rod seat 2 and the push rod 3 are movably arranged on the inner side of the main shell 1, and the push rod seat 2 and the push rod 3 can slide up and down along the vertical direction of the main shell 1. A launch spring 5 is arranged between the push rod seat 2 and the push rod 3, the upper end of the launch spring 5 abuts against the push rod seat 2, and the lower end of the launch spring 5 abuts against the push rod 3, so as to apply a downward elastic force to the push rod 3 in a compressed state, so as to provide a power source for the launch and delivery operation of the dynamic continuous blood glucose monitor.

[0062] Preferably, the main shell 1, the push rod seat 2 and the push rod 3 can be movably connected by a sliding assembly (such as a slide rail, a slider and other structural forms), which can achieve mutual guiding effect between each other, so that the movement of the push rod seat 2 and the push rod 3 relative to the main shell 1 is more accurate.

[0063] Specifically by Figure 1-Figure 3 and Figure 7 As shown, the needle assembly 4 includes a needle clamp 41 and a needle seat 42, the needle clamp 41 and the needle seat 42 are fixedly assembled and connected, and the needle seat 42 is provided with an auxiliary needle 43 arranged downward, the auxiliary needle 43 preferably adopts a hard needle structure, which is used to pierce the human skin when the needle is sent, so as to serve as a carrier structure for the sensor probe 71 to be implanted in the human body. A needle withdrawal spring 6 is provided between the needle clamp 41 and the push rod 3, the upper end of the needle withdrawal spring 6 abuts against the needle clamp 4, and the lower end of the needle withdrawal spring 6 abuts against the push rod 3, so as to apply an upward elastic force to the needle clamp 4 in a compressed state, which is used to provide a power source for the return and withdrawal operation of the dynamic continuous blood glucose monitor.

[0064] Specifically by Figure 1-Figure 4 As shown, the bottom cover 8 can be detachably assembled under the main shell 1. When the main shell 1 is assembled with the bottom cover 8, the needle assembly 4 and other structures in the main shell 1 are protected by the bottom cover 8, thereby improving the sealing performance; when the dynamic continuous blood glucose monitor needs to be used, the bottom cover 8 is removed and the main shell 1 is pressed to start the needle assist assembly.

[0065] More specifically, see Figure 3 and Figure 5 As shown, the inner side of the main shell 1 is provided with a first card slot 11, the push rod 3 is provided with a first card buckle 31 and a second card slot 32; the needle clamp 41 is provided with a second card buckle 411. In the initial state (that is, when the dynamic continuous blood glucose monitor has not been used), the first card buckle 31 of the push rod 3 is inserted into the first card slot 11 of the main shell 1, so that the launch spring 5 is in a compressed state under the locking action of the first card buckle 31 and the first card slot 11; the second card buckle 411 of the needle clamp 41 is inserted into the second card slot 32 of the push rod 3, so that the needle withdrawal spring 6 is in a compressed state under the locking action of the second card buckle 411 and the second card slot 32. Among them, the launch spring 5 is used to provide power for the launch and needle delivery of the needle assisting assembly, and the needle withdrawal spring 6 is used to provide power for the return and needle withdrawal of the needle assisting assembly.

[0066] Through the above structural design, the dynamic continuous blood glucose monitor of the present invention includes at least the following three states when actually used:

[0067] 1) In the initial state, the bottom cover 8 is assembled on the main housing 1, and the needle assembly 4 in the needle assisting device assembly is protected by the bottom cover 8 and the main housing 1. At this time, although the firing spring 5 is in a compressed state and exerts a downward elastic force on the push rod 3, the first buckle of the push rod 3 is inserted into the first slot 11 of the main housing 1, so the push rod 3 and the main housing 1 are in a relatively locked state.

[0068] 2) In the launching and needle delivery state, when the dynamic continuous blood glucose monitor needs to be used, the bottom cover 8 is removed from the main shell 1, the lower side of the main shell 1 is aligned with the injection site of the human body, and the main shell 1 is pressed to make the first buckle 31 of the push rod 3 disengage from the first slot 11 of the main shell 1, and the launching spring 5 is restored to its original state. The push rod 3 is rapidly ejected downward under the elastic force of the launching spring 5, and at the same time drives the needle assembly 4 to move rapidly downward. After ejecting a preset distance, the auxiliary needle 43 of the needle seat 4 penetrates into the human body, completing accurate and rapid needle delivery.

[0069] At this time, although the needle withdrawal spring 6 is in a compressed state and will exert an upward elastic force on the needle clamp 41, due to the second buckle 411 of the needle clamp 41 and the second slot 32 of the push rod 3, the needle clamp 41 and the push rod 3 are in a relatively locked state.

[0070] It can be seen that during the needle delivery process, the push rod 3 moves along a vertical downward path (i.e., the first direction) under the elastic force of the launch spring 6 and the guiding action of the push rod seat 2 or the main shell 1, thereby driving the needle clamp 41, needle seat 42 and other structures to be quickly launched downward. The movement process of the auxiliary needle 43 of the needle seat 42 before it penetrates the human body is not interfered by any structure, thereby improving the stability and smoothness of the push rod 3 and needle assembly 4 during the movement process.

[0071] 3) Return to the needle withdrawal state. After the auxiliary needle 4 is launched and sent, the second buckle 411 of the needle clamp 41 and the second slot 32 of the push rod 3 are separated, and the needle withdrawal spring 5 is restored to its original state. The needle clamp 41 is quickly ejected upward under the elastic force of the needle withdrawal spring 6, and at the same time drives the auxiliary needle 43 of the needle seat 42 to move upward rapidly, so that the auxiliary needle 43 quickly leaves the human body and returns to the assembly cavity of the main shell 1, realizing the automatic recovery of the hard needle, leaving the CGM sensor probe inserted into the human body to continuously and dynamically monitor the human blood sugar.

[0072] It can be seen that after the needle is launched and delivered, the needle clamp 41 and the needle seat 42 move along a vertical upward path (that is, the second direction) under the elastic force of the needle withdrawal spring 6 and the guiding action of the push rod seat 3 or the main shell 1, and the switching process between needle delivery and needle withdrawal is smoother and smoother, reducing the shaking that may be caused when the auxiliary needle 43 is inserted and removed from the human body, reducing the time the needle stays in the patient's skin, reducing the user's pain during the injection process, and reducing the risk of infection caused by improper needle removal.

[0073] Further, see Figure 1 and Figure 7 As shown, the dynamic continuous blood glucose monitor of the present invention also includes a CGM module 7, which is detachably mounted on the side of the push rod 3 close to the bottom cover 8 (i.e., below the push rod 3), and includes a sensor probe 71, and the sensor probe 71 and the auxiliary needle 43 are arranged correspondingly, and a patch 72 is arranged on the side of the CGM module 7 close to the bottom cover 8 (i.e., below the CGM module 7). Among them, when the push rod 3 is ejected downward under the elastic force of the launch spring 5, the CGM module 7 can be driven to move downward synchronously, and after ejecting a preset distance, the patch of the CGM module 7 is adhered and fixed to the human skin, the auxiliary needle 43 of the needle seat 42 penetrates into the human body, and drives the sensor probe 71 into the human body, completing accurate and rapid needle delivery, and realizing continuous dynamic monitoring of human blood glucose.

[0074] Preferably, during loading, the sensor probe 71 can be disposed inside the auxiliary needle 43 , so as to be implanted into the subcutaneous tissue of the human body following the insertion of the auxiliary needle 43 .

[0075] Specifically, the CGM module 7 can be assembled and connected to the bottom of the push rod 3 by means of a snap connection or adhesive tape, so as to achieve a detachable effect, and the adhesive force between the patch 72 and the human skin is greater than the snap connection or adhesive tape force between the CGM module 7 and the push rod 3, ensuring that the CGM module 7 can be fixed to the human skin through the patch 72 after the needle is launched.

[0076] More specifically, after completing one use of the dynamic continuous blood glucose monitor, when it needs to be used again, a new CGM module 7 is reloaded under the main shell 1, and the push rod 2, push rod seat 3, needle assembly 4 and other structures of the needle assist assembly are reset, and the bottom cover 8 is screwed back, thereby realizing the reuse of the dynamic continuous blood glucose monitor, avoiding waste and reducing costs.

[0077] Example 1

[0078] In one of the preferred embodiments of the present invention, a technical solution is provided on how to achieve the sealing and protection functions of the needle assembly 4, CGM module 7 and other structures through the specific structural design of the bottom cover 8.

[0079] See also Figure 1 , Figure 2 and Figure 4 As shown, in the technical solution of this embodiment, the dynamic continuous blood glucose monitor also includes a syringe 9, which is a cylindrical structure with an opening and is provided with a fifth card slot 91. The bottom cover 8 includes a base 82, and the base 82 is provided with a fifth buckle 821. The fifth buckle 821 of the base 82 is inserted into the fifth card slot 91 of the syringe 9, so that the syringe 9 is fixedly assembled inside the bottom cover 8, and the opening of the syringe 9 is facing upward. Specifically, when the bottom cover 8 is assembled and connected with the main shell 1, the auxiliary needle 43 extending from the needle seat 42 is located inside the syringe 9, so that the auxiliary needle 43 is sealed and protected by the syringe 9 in the bottom cover 8, thereby improving the safety performance.

[0080] Further, see Figure 2 As shown, the main shell 1 is provided with a first thread 14, and the bottom cover 8 is provided with a second thread 81. When assembling the main shell 1 and the bottom cover 8, the first thread 14 and the second thread 81 are arranged correspondingly, so that the main shell 1 and the bottom cover 8 are threadedly connected, that is, the bottom cover 8 is tightened. Similarly, when disassembling, the bottom cover 8 can be unscrewed from the main shell 1, which is easy to operate.

[0081] More specifically, see Figure 1 As shown, a sealing ring 83 is also provided between the main shell 1 and the bottom cover 8. The sealing ring 83 is provided between the lower end surface of the main shell 1 and the upper end surface of the bottom cover 8, and the sealing ring 83 is compressible, so that when the bottom cover 8 is tightened, the sealing ring 83 can fill the small gap between the main shell 1 and the bottom cover 8, thereby effectively preventing liquid or gas from entering the dynamic continuous blood glucose monitor. In addition, the compressibility of the sealing ring 83 can ensure that it adapts to the unevenness of the contact surface of the main shell 1 and the bottom cover 8, further ensuring the integrity of the seal.

[0082] Preferably, the sealing ring 83 can be an annular sealing ring structure made of materials such as nitrile rubber (NBR), fluororubber (FKM), propylene rubber (ACM), chloroprene rubber (CR), silicone rubber (VMQ), polyurethane rubber (PU), etc.

[0083] In addition, see Figure 1 As shown, a moisture-proof block 84 is provided on the outside of the syringe 9, and the moisture-proof block 84 is used to absorb excess moisture to prevent the auxiliary needle 43, the sensor probe 71 or other sensitive parts inside the syringe 9 from getting damp, thereby ensuring the stability and accuracy of the blood glucose monitoring device.

[0084] Preferably, the moisture-proof block 84 can be fixedly assembled on the base 82 of the bottom cover 8 by a detachable manner such as a snap connection, so as to facilitate installation, replacement, maintenance and other operations.

[0085] Preferably, the moisture-proof block 84 can be made of a moisture-proof film or coating material made of silicone or polyethylene, polyvinyl chloride, etc.

[0086] Example 2

[0087] In another preferred embodiment of the present invention, a technical solution is provided on how to realize the needle launching and needle returning operations of a dynamic continuous blood glucose monitor through the specific structural design of a needle assisting device assembly.

[0088] See also Figure 2 and Figure 5 As shown, in the technical solution of this embodiment, the push rod seat 2 is provided with a first top block 21, the first top block 21 is provided with a first inclined surface, the push rod 3 is provided with a second top block 33, the second top block 33 is provided with a second inclined surface, and the first inclined surface and the second inclined surface are arranged correspondingly. Among them, the first top block 21 of the push rod seat 2 is used to squeeze the second top block 33 of the push rod 3 to elastically deform the first buckle 31 inwardly, thereby separating the first buckle 31 from the first slot 11.

[0089] Specifically, in the structural design of the push rod seat 2 and the push rod 3, a first top block 21 is provided on the inner side of the push rod seat 2, and the upper contact surface of the first top block 21 is designed as a first inclined surface. At the same time, a second top block 33 is provided on the outer side of the push rod 3, and its lower contact surface is a second inclined surface. The two inclined surfaces correspond to each other, forming an ingenious inclined surface matching structure. When the needle assist assembly is in operation, the first top block 21 of the push rod seat 2 will move upward to apply pressure in the direction of the second top block 33. Since the contact surfaces of the first top block 21 and the second top block 33 are both inclined surfaces, this pressure will be transmitted along the direction of the inclined surface, thereby achieving a "inclined surface extrusion" effect, and this extrusion effect will be further transmitted to the first buckle 31 on the push rod 3. After being subjected to the force of this inclined surface extrusion, the first buckle 31 will undergo inward elastic deformation. This elastic deformation is a key step in achieving buckle separation. Finally, as the first clip 31 is deformed inwardly, the matching relationship between it and the first slot 11 is broken, so that the first clip 31 can be separated from the first slot 11 smoothly.

[0090] Therefore, this design not only cleverly utilizes the mechanical principle of the inclined plane, but also realizes the reliable separation of the first buckle 31 and the first slot 11 through elastic deformation, ensuring the smoothness and reliability of the needle assisting device assembly during operation. At the same time, this structural design also simplifies the operation process and improves the convenience of using the needle assisting device.

[0091] Further, see Figure 2 As shown, the push rod seat 2 is provided with a baffle 22, which is used to prevent the first buckle 31 from deforming inward, and the baffle 22 is an elastic structure. Specifically, in the structural design of the push rod seat 2, a side of the push rod seat 2 away from the first slot 11 is specially provided with an elastic baffle 22, which not only plays a key blocking role, but also has an important function due to its unique elastic structure. The baffle 22 can reversely block and limit the first buckle 31 inserted into the first slot 11, so as to prevent the first buckle 31 from detaching from the first slot 11 due to other factors before pressing to start the dynamic continuous blood glucose monitor, thereby causing the dynamic continuous blood glucose monitor to be misfired.

[0092] In addition, during operation, when the first buckle 31 is subjected to external force, the blocking piece 22 can effectively prevent the first buckle 31 from excessively deforming inward, and this blocking effect is crucial to ensure the stability of the first buckle 31 during operation. Specifically, the elastic structure of the blocking piece 22 allows it to deform moderately when subjected to a certain pressure, thereby providing necessary support and limiting effect for the first buckle 31 without damaging the components.

[0093] See also Figure 3-Figure 5 As shown, in an optional solution of this embodiment, a rib 12 is provided on the inner side of the main housing 1, the rib 12 is provided with a third inclined surface, the push rod seat 2 is provided with an elastic sheet 23, and the elastic sheet 23 is provided with a fourth inclined surface. In the initial state, the third inclined surface and the fourth inclined surface are in contact with each other; when in use, the main housing 1 is pressed, so that the rib 12 of the main housing 1 applies an inward force to the elastic sheet 23 of the push rod seat 2, which can drive the push rod seat 2 to move along the second direction, that is, upward.

[0094] Specifically, in the structural design of the main shell 1 and the push rod seat 2, at least one rib 12 is specially provided on the inner side of the main shell 1, and the upper contact surface of the rib 12 is designed as a third inclined plane. At the same time, a spring piece 23 is provided on the push rod seat 2, and the lower contact surface of the spring piece 23 is a fourth inclined plane. The two inclined planes abut against each other, forming an ingenious inclined plane matching structure. The user can start the operation process by pressing the main shell 1. When the main shell 1 is subjected to a pressing force, the rib 12 thereon will apply an inward force to the spring piece 23 on the push rod seat 2 along the direction of the third inclined plane. Since the spring piece 23 has a certain elasticity, it can be elastically deformed after being squeezed by the force of the inclined plane, thereby driving the push rod seat 2 to move upward. This design of inclined plane matching and elastic structure not only cleverly utilizes the principle of mechanics, but also realizes the reliable movement of the push rod seat 2 through elastic deformation, ensuring the smoothness, reliability and convenience of the needle assist assembly during operation.

[0095] Further, see Figure 2 As shown, the inner side of the main housing 1 is provided with a third buckle 13, the push rod seat 2 is provided with a third buckle 24, and the third buckle 13 is located in the third buckle 24. The width of the third buckle 24 in the second direction is greater than the length of the third buckle 13.

[0096] Specifically, in the structural design of the main shell 1 and the push rod seat 2, by accurately embedding the third buckle 13 in the third slot 24, a stable connection between the main shell 1 and the push rod seat 2 can be achieved. Moreover, when the third buckle 13 is embedded in the third slot 24, the larger slot width provides a certain activity space for the third buckle 13, forming an air avoidance distance, so that while achieving a relative limit effect on the push rod seat 2, the push rod seat 2 can also be moved up and down inside the main shell 1, and the structural design is simple and reasonable. In addition, the above structural design not only allows the third buckle 13 to slide to a certain extent in the slot, but also can absorb certain errors during operation, ensuring that the connection between the main shell 1 and the push rod seat 2 is more flexible and reliable.

[0097] See also Figure 3 and Figure 6As shown, in another optional scheme of this embodiment, the push rod seat 2 is provided with a stopper 25, the stopper 25 is provided with a fifth inclined surface, the second buckle 411 is provided with a sixth inclined surface, and the fifth inclined surface and the sixth inclined surface are arranged correspondingly. Among them, the stopper 25 is used to squeeze the second buckle 411 to make the second buckle 411 elastically deform inward, thereby separating the second buckle 411 from the second slot 32. Through the above structural design, after the needle is launched and sent, the second buckle 421 of the needle clamp 42 can be deformed inward after hitting the stopper 25 of the push rod seat 2, until the second buckle 421 is separated from the second slot 32, the needle withdrawal spring 6 returns to its original state, and the needle clamp 42 is rapidly ejected upward under the elastic force of the needle withdrawal spring 6, while driving the needle assembly 41 to move rapidly upward, so that the auxiliary needle 43 of the needle assembly 4 quickly leaves the human body.

[0098] More specifically, in the structural design of the push rod seat 2 and the needle clamp 4, the upper contact surface of the block 25 is designed as a fifth inclined surface. Correspondingly, a sixth inclined surface is provided below the second clip 411. The two inclined surfaces cooperate with each other to form an ingenious inclined surface extrusion mechanism. The core function of this design is that the block 25 can exert an inward force on the second clip 411 through the interaction of its fifth inclined surface with the sixth inclined surface of the second clip 411. When the needle aid assembly is in operation, the inclined surface structure of the block 25 will squeeze the second clip 411, causing it to undergo inward elastic deformation, thereby enabling the second clip 411 to be smoothly separated from the second slot 32, thereby realizing the needle withdrawal operation. This inclined surface extrusion mechanism not only improves the operational convenience of the needle aid assembly, but also reduces the wear between components through elastic deformation, thereby extending the service life of the equipment.

[0099] See also Figure 2 As shown, in another optional scheme of this embodiment, the needle seat 42 is provided with a fourth card slot 421 that is recessed inward, and the needle clamp 41 is provided with a fourth card buckle 412, and the fourth card buckle 412 is inserted into the fourth card slot 421, so that the needle clamp 41 and the needle seat 42 are fixedly assembled and connected. Specifically, the assembly method of the needle clamp 41 and the needle seat 42 through the card buckle connection can ensure that the needle clamp 41 and the needle seat 42 are tightly fixed, avoid the loosening or falling off of the needle seat 42 due to external force or vibration during use, and improve the reliability of the system. Such a stable connection method is essential to ensure the stability of the auxiliary needle 43 during the insertion and withdrawal process; on the other hand, through the design of the card buckle connection, when the needle auxiliary assembly needs to replace the needle seat 42 according to different injection requirements, the needle seat 42 on the needle clamp 41 is automatically withdrawn through the release mechanism of the card buckle, thereby improving the convenience of operation.

[0100] To sum up, the dynamic continuous blood glucose monitor provided by the present invention has the characteristics of simple and reasonable structural design and easy operation. When in use, only pressing the main shell 1 can automatically complete the needle delivery and needle withdrawal of the auxiliary needle 43 and the smooth implantation of the sensor probe 71 into the human body. The detachable bottom cover 8 structural design avoids the safety hazards caused by the exposure of structures such as the CGM sensor 7 and the auxiliary needle 43. After the present invention is used once, when it needs to be used again, a new CGM module 7 is re-loaded under the main shell 1, and the push rod 2, the push rod seat 3, the needle clamp 41 and other structures are reset at the same time, and the bottom cover 8 is screwed back, thereby realizing the reuse of the dynamic continuous blood glucose monitor and avoiding waste.

[0101] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A dynamic continuous blood glucose monitor, characterized in that: include: The needle assisting device assembly comprises a main shell, a push rod seat and a push rod movably arranged in the main shell, a launching spring is arranged between the push rod seat and the push rod, the main shell is provided with a first clamping groove, and the push rod is provided with a first clamping buckle and a second clamping groove; A needle assembly, the needle assembly comprising a fixedly assembled needle clamp and a needle seat, the needle clamp is provided with a second buckle, the needle seat is provided with an auxiliary needle, and a needle withdrawal spring is provided between the needle clamp and the push rod; A bottom cover, the bottom cover can be detachably assembled on the main shell; In an initial state, the first buckle is snapped into the first slot, the second buckle is snapped into the second slot, and the launching spring and the needle retracting spring are both in a compressed state; In the launching and needle feeding state, the first buckle and the first clamping slot are separated, and the launching spring is reset, so that the push rod and the needle clamp move along the first direction; In the needle retracting state, the second buckle and the second clamping groove are separated, and the needle retracting spring is reset, so that the needle clamp moves in a second direction opposite to the first direction.

2. The dynamic continuous blood glucose monitor according to claim 1, characterized in that: The dynamic continuous blood glucose monitor also includes a CGM module, which is detachably mounted on a side of the push rod close to the bottom cover. The CGM module includes a sensor probe, which is arranged corresponding to the auxiliary needle. A patch is provided on a side of the CGM module close to the bottom cover.

3. The dynamic continuous blood glucose monitor according to claim 1, characterized in that: The dynamic continuous blood glucose monitor also includes a syringe, which is provided with a fifth slot; the bottom cover includes a base, which is provided with a fifth buckle; the fifth buckle is snapped into the fifth slot to fix the syringe inside the bottom cover; when the bottom cover is assembled and connected to the main shell, the auxiliary needle is located inside the syringe.

4. The dynamic continuous blood glucose monitor according to claim 3, characterized in that: The main shell is provided with a first thread, the bottom cover is provided with a second thread, and the main shell and the bottom cover are threadedly connected; in addition, a sealing ring is provided between the main shell and the bottom cover, and a moisture-proof block is provided on the outer side of the syringe.

5. The dynamic continuous blood glucose monitor according to claim 1, characterized in that: The push rod seat is provided with a first top block, the first top block is provided with a first inclined surface, the push rod is provided with a second top block, the second top block is provided with a second inclined surface, and the first inclined surface and the second inclined surface are arranged correspondingly; wherein, the first top block is used to squeeze the second top block to make the first buckle elastically deform inward, thereby separating the first buckle and the first slot.

6. The dynamic continuous blood glucose monitor according to claim 5, characterized in that: A blocking piece is provided on one side of the push rod seat away from the first clamping slot, and the blocking piece is used to prevent the first buckle from deforming inwards, and the blocking piece is an elastic structure.

7. The dynamic continuous blood glucose monitor according to claim 5, characterized in that: The inner side of the main shell is provided with a rib, the rib is provided with a third inclined surface, the push rod seat is provided with a spring sheet, and the spring sheet is provided with a fourth inclined surface; in an initial state, the third inclined surface and the fourth inclined surface are in contact with each other; when the rib applies an inward force to the spring sheet, the push rod seat can be driven to move along the second direction.

8. The dynamic continuous blood glucose monitor according to claim 7, characterized in that: A third buckle is provided on the inner side of the main shell, and a third slot is provided on the push rod seat, wherein the third buckle is located in the third slot; wherein the width of the third slot in the second direction is greater than the length of the third buckle.

9. The dynamic continuous blood glucose monitor according to claim 1, characterized in that: The push rod seat is provided with a stopper, the stopper is provided with a fifth inclined surface, the second buckle is provided with a sixth inclined surface, and the fifth inclined surface and the sixth inclined surface are arranged correspondingly; wherein, the stopper is used to squeeze the second buckle to make the second buckle elastically deform inward, thereby separating the second buckle and the second slot.

10. The dynamic continuous blood glucose monitor according to claim 1, characterized in that: The needle seat is provided with a fourth slot, and the needle clamp is provided with a fourth buckle, and the fourth buckle is snapped into the fourth slot so that the needle clamp and the needle seat are fixedly assembled and connected.

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