Linkage structure of dynamic blood glucose meter and applicator

Abstract

The application provides a linkage structure and an applicator of a dynamic blood glucose meter. By unlocking the transmission member and cooperating with the linkage structure, the unlocking and locking processes of the applicator at multiple positions during the puncture process are realized. The structure design is ingenious, and the same part such as the linkage support and the first braking part in the scheme considers multiple functions, the scheme is highly integrated, so that the cooperation of each part in the applicator is reliable during the short puncture process, and the puncture process is ensured to be completed smoothly.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a linkage structure for a continuous glucose meter. Background Technology

[0002] CGM (Continuous Glucose Monitoring) – also known as dynamic glucose monitoring, generally refers to minimally invasive dynamic glucose monitoring technology. This technology involves implanting a glucose sensor into the subcutaneous tissue to directly monitor the glucose content in the tissue fluid, thereby indirectly calculating the body's blood glucose level. The biggest feature of CGM is that it provides continuous, comprehensive, and reliable blood glucose information throughout the day, allowing for understanding of blood glucose fluctuation trends and the detection of hidden hyperglycemia and hypoglycemia that are difficult to detect by traditional monitoring methods.

[0003] The CGM applicator includes a transmitter and an indwelling device. Initially, the indwelling device is stably housed within the transmitter. During operation, the transmitter implants the sensor into the host skin and releases the indwelling device, allowing it to adhere and securely fix to the body surface to collect and store sensor data or communicate with other terminals. Specifically, the sensor implantation method has evolved from traditional manual insertion to a switch-triggered mechanism. This mechanism unlocks the applicator's internal structure by pressing a switch. The applicator typically contains an energy storage device, which releases energy from this storage device to replace externally supplied energy from the transmitter, driving the sensor to penetrate the host skin.

[0004] Therefore, how to lock and unlock key components before and after sensor implantation through a switch-triggered structure is an important direction for optimizing product structure in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a linkage structure and applicator for a continuous glucose meter, which optimizes the technical problem of complex locking and unlocking structures of key components before and after sensor implantation in existing continuous glucose meters.

[0006] To achieve the above objectives, a first aspect of the present invention provides a linkage structure for a continuous glucose monitoring system, comprising:

[0007] Unlock the transmission component, which is used to receive a pushing force from outside the applicator and move into the applicator;

[0008] The linkage bracket is located relative to the unlocking transmission member in the direction in which the unlocking transmission member moves toward the inside of the applicator, and its position changes due to the action of the unlocking transmission member after the unlocking transmission member moves a certain distance toward the inside of the applicator; the linkage bracket has a first locking structure, which locks the retention device after the linkage bracket changes position, so that the retention device remains inside the applicator.

[0009] The first braking component is used to lock the energy of the energy storage device in the initial state, and to release the lock on the energy storage device by the action of the linkage bracket after the position of the linkage bracket changes, so that the applicator can complete the sensor implantation under the action of the energy storage device.

[0010] The second braking component locks the linkage bracket in response to the linkage bracket acting on the first braking component and releases the linkage bracket after the sensor is implanted.

[0011] Wherein, the first braking component has a first energy storage after the linkage bracket is actuated, and the linkage bracket is released by the second braking component and changes position under the action of the first energy storage to unlock the first locking structure holding the indwelling device, so that the indwelling device can be separated from the applicator.

[0012] Furthermore, the linkage bracket has a first working surface and is equipped with a guide limiting structure. The first working surface is not perpendicular to the direction in which the unlocking transmission member moves into the applicator, nor is it perpendicular to the guiding direction of the guide limiting structure. The linkage bracket contacts the unlocking transmission member through the first working surface and moves along the guiding direction.

[0013] Furthermore, the unlocking transmission component has a first outer arc surface, and the unlocking transmission component contacts the first working surface through the first outer arc surface.

[0014] Furthermore, the first braking component is an elastic element located in the guide direction.

[0015] Furthermore, the linkage bracket has a second locking structure for retaining the indwelling device within the applicator in the initial state.

[0016] Furthermore, the unlocking directions of the first locking structure and the second locked structure are the same.

[0017] Furthermore, the first locking structure, the second locking structure, and the retention device cooperate with each other via a lock tongue and a lock hole.

[0018] Furthermore, the second braking component is integrated into the unlocking transmission component.

[0019] Furthermore, the second braking component is in the form of a hook, and the linkage bracket is provided with a hook adapted to the second braking component; in the initial state, the second braking component and the hook on the linkage bracket are at a certain distance in the direction of movement of the unlocking transmission member into the applicator, and in the direction of position change of the linkage bracket.

[0020] Furthermore, the unlocking transmission component is a lever with a fixed pivot position. The second braking component is located at one end of the lever and is fixed to the housing of the dynamic blood glucose meter through a deformable elastic element. The other end of the lever is associated with a timing structure. The lever remains stable under the action of the elastic element and the timing structure. After the puncture is completed, the timing structure changes the force relationship with the other end of the lever to release the above-mentioned stable state. The lever rotates, causing the second braking component to release the linkage bracket.

[0021] In another aspect of the invention, an applicator is provided, comprising a housing in which the linkage structure described in the first aspect is housed.

[0022] Beneficial effects:

[0023] As can be seen from the above technical solutions, the technical solution of the present invention provides a linkage structure and applicator for a dynamic blood glucose meter. By cooperating with the unlocking transmission component and the linkage structure, the applicator can be unlocked and locked at multiple positions during the puncture process. The structure is ingeniously designed, and the same component such as the linkage bracket and the first braking component in the solution has multiple functions. The solution is highly integrated, which makes the various components inside the applicator cooperate reliably during the short puncture process, ensuring the smooth completion of the application process.

[0024] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered part of the inventive subject matter of this disclosure, provided that such concepts do not contradict each other.

[0025] The foregoing and other aspects, embodiments, and features of the teachings of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0026] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the external structure of the applicator according to an embodiment of the present invention;

[0028] Figure 2 This is an exploded view of the components of the applicator according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the linkage bracket in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the indwelling device in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the left unlocking transmission component in an embodiment of the present invention;

[0032] Figure 6 This is a first cross-sectional view of the applicator in its initial state according to an embodiment of the present invention;

[0033] Figure 7 This is a second cross-sectional view of the applicator in its initial state according to an embodiment of the present invention;

[0034] Figure 8 This is a third cross-sectional view of the applicator in its initial state according to an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the bottom surface of the applicator in its initial state according to an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the internal surface of the second track as the applicator in an embodiment of the present invention completes its first stroke;

[0037] Figure 11 This is a bottom view of the applicator in an embodiment of the present invention at the end of the first stroke;

[0038] Figure 12 A schematic diagram of the internal surface of the second track shown by the applicator in this embodiment of the invention at the end of the second stroke;

[0039] Figure 13 This is a schematic diagram of the internal surface of the second track as the applicator in this embodiment of the invention reaches the end of the third stroke;

[0040] Figure 14This is a bottom view of the applicator in an embodiment of the present invention at the end of the third stroke;

[0041] Figure 15 This is a schematic diagram of the internal surface of the second track as the applicator in this embodiment of the invention reaches the end of the fourth stroke;

[0042] The meanings of the various reference numerals in the figure are as follows:

[0043] Applicator 100, left housing 101-1, right housing 101-2, base 102, indwelling device body 103-1, indwelling device housing 103-2, indwelling device first slot 103-3, indwelling device second slot 103-4;

[0044] Drive tower 104, linkage bracket 105, first locking structure 105-1, first working surface 105-2, bracket locking hook 105-3, second locking structure 105-4, left button 106-1, right button 106-2, left unlocking transmission component 107-1, right unlocking transmission component 107-2, first outer arc surface 107-3, transmission component hook 107-4, cam 108, left control block 109-1, right control block 109-2, torsion spring 110, push part 111, guide part 112, sensor 113, brake pad 114, left spring 117-1, right spring 117-2. Detailed Implementation

[0045] To better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0046] Various aspects of the invention are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily intended to encompass all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed herein are not limited to any particular implementation. Furthermore, some aspects of the invention disclosed may be used alone or in any suitable combination with other aspects of the invention disclosed.

[0047] Embodiments of the present invention provide an applicator 100 for a continuous glucose monitoring system, such as... Figure 1 The image shows the external appearance of a dynamic blood glucose meter according to an embodiment of the present invention. Its internal components include a drive tower 104, a linkage bracket 105, an unlocking transmission component, a brake pad 114, a torsion spring 110, and a puncture assembly. The applicator 100 is equipped with a button on its exterior, which can be linked to the unlocking transmission component (including a left unlocking transmission component 107-1 and a right unlocking transmission component 107-2) inside the applicator 100 to allow the user to complete the puncture by pressing.

[0048] like Figure 2 The figure shown is an exploded view of the applicator 100 according to an embodiment of the present invention. Figure 2 As presented, the applicator 100 of this embodiment of the invention consists of a left housing 101-1, a right housing 101-2, and a base 102 forming an outer shell. The inner shell has a launch return structure. A left button 106-1 and a right button 106-2 are respectively provided on the left housing 101-1 and right housing 101-2 for the user to operate and trigger the launch return structure to perform puncture. The outer shell, buttons, the launch return structure inside the outer shell, the puncture assembly, and the linkage bracket 105 together constitute the launcher. The launch return structure acts on the pushing part 111 and the guiding part 112, and under the action of the pushing part 111 and the guiding part 112, the sensor is punctured into the host body. Below the base 102, there is space for accommodating the indwelling device and a channel for releasing the indwelling device. The indwelling device includes an indwelling device body 103-1 and an indwelling device housing 103-2. The indwelling device and the transmitter cooperate to keep the indwelling device inside the transmitter when no puncture is performed. When the puncture is completed, the indwelling device can be separated from the transmitter and remain on the surface of the host's skin.

[0049] In the aforementioned puncture process, in order to complete the puncture process of the applicator 100, in addition to the need for the launch return structure and the puncture assembly to work together, a series of supporting actions are also required, such as unlocking the applicator 100 in its initial state and releasing the indwelling device after the applicator 100 has been launched. These processes mainly rely on the cooperation of the unlocking transmission component, the linkage bracket 105, the first braking component, and the second braking component.

[0050] The unlocking transmission member is used to receive a pushing force from outside the applicator 100 and move into the applicator 100. For example... Figure 5 The diagram shows a schematic of the unlocking transmission component provided in an embodiment of the present invention. It is closely fitted with a button located on the housing. After the button is pressed, the unlocking transmission component moves synchronously into the applicator 100 along with the button, and can transmit the pressing force of the button into the applicator 100.

[0051] The linkage bracket 105 is located relative to the unlocking transmission member in the direction in which the unlocking transmission member moves toward the interior of the applicator 100. In this embodiment, the applicator 100 has a drive tower 104 inside, the drive tower 104 has a base and a moving track disposed on the base, the moving track is used to provide guidance for the firing direction of the puncture assembly, and the lower surface of the base of the drive tower 104 is adapted to the shape of the indwelling device housing to accommodate the indwelling device. The moving track is located at the center position in the left-right direction of the base, and the linkage bracket 105 is mounted on the upper surface of the base of the drive tower 104 and symmetrically arranged on both sides of the moving track.

[0052] like Figure 4 As shown, the indwelling device has a first indwelling device slot 103-3, which extends in the front-to-back direction. Figure 6 As shown, the linkage bracket 105 has a second locking structure 105-4, which is a locking tongue structure. The second locking structure 105-4 is adapted to the first slot 103-3 of the indwelling device and extends into the first slot 103-3 of the indwelling device to form a locking tongue and locking hole, thereby keeping the indwelling device in the applicator 100 in the initial state.

[0053] The drive tower 104 and the linkage bracket are fitted with a clearance, and the drive tower 104 serves as a guide and limit structure for the linkage bracket 105 in the front-to-back direction.

[0054] like Figure 3 As shown, the linkage bracket 105 has a first working surface 105-2, as... Figure 6 As shown, the unlocking transmission component has a first outer arc surface 107-3. After the unlocking transmission component moves a certain distance into the applicator 100, the unlocking transmission component contacts the first working surface 105-2 through the first outer arc surface 107-3.

[0055] The first action surface 105-2 is an inclined plane relative to the movement direction and the front-back direction of the unlocking transmission member. That is, the first action surface 105-2 is not perpendicular to the direction in which the unlocking transmission member moves into the applicator 100, nor is it perpendicular to the guiding direction of the guide limiting structure. Therefore, when the unlocking transmission member contacts the first action surface 105-2 through the first outer arc surface 107-3, the force provided by the first outer arc surface 107-3 to the first action surface 105-2 is divided into two components: one in the front-back direction and the other in the movement direction of the unlocking transmission member. One component causes the unlocking transmission member to press more tightly against the linkage bracket 105, while the other component causes the linkage bracket 105 to move in the front-back direction, thereby changing the position of the linkage bracket 105 due to the action of the unlocking transmission member.

[0056] The linkage bracket 105 has a first locking structure 105-1. Correspondingly, the indwelling device is provided with a second indwelling device slot 103-4 adapted to the first locking structure 105-1. The first locking structure 105-1 locks the indwelling device after the linkage bracket 105 changes position, so that the indwelling device is kept within the applicator 100. Figure 3 and Figure 5As shown, in some embodiments, the first locking structure 105-1 is in the form of a locking tongue, and the second slot 103-4 of the retaining device is in the form of a lock hole. When the locking tongue passes into the lock hole during movement, the applicator 100 and the linkage bracket 105 are relatively fixed. Figure 7 The figure shows a cross-sectional view of an embodiment of the present invention in its initial state. As can be seen from the figure, the first locking structure 105-1 is not locked to the lock hole. When the linkage bracket 105 continues to move to the left as shown in the figure, as... Figure 10 As shown, the first locking structure 105-1 slides into the lock hole to lock, thereby keeping the indwelling device within the applicator 100. Conversely, when the linkage bracket 105 moves in the opposite direction, both the first locking structure 105-1 and the second locking structure can be unlocked, thereby releasing the holding of the indwelling device.

[0057] In the initial state shown in the figure above, there is a first braking component in the moving direction of the linkage bracket 105. In some embodiments, the first braking component is an elastic element located in the guide direction. Figure 7 As shown, the braking component is a brake pad 114. One end of the brake pad 114 is fixed to the housing, and the other end extends to the vicinity of a cam 108. The cam 108 is provided with a stroke control rail, which is part of the launch return structure and is used to control the stroke of the puncture assembly. A torsion spring 110 is preset on the cam 108 to store energy so that after the cam 108 is unlocked, it drives the cam 108 to rotate, thereby driving the puncture assembly to complete the puncture. The brake pad 114 has a protrusion, and the cam 108 has a corresponding notch. In the initial state, the protrusion is locked in the notch of the cam 108, thus preventing the cam 108 from rotating. When the position of the linkage bracket 105 changes, that is, in this embodiment, the linkage bracket 105 moves backward in the front-back direction, thereby approaching the brake pad 114 and squeezing the brake pad 114 after contact, causing the protrusion of the brake pad 114 to slide out from the notch of the cam 108.

[0058] The applicator 100 also has a second braking component, which locks the linkage bracket 105 in response to the linkage bracket 105 acting on the first braking component and releases the linkage bracket 105 after the sensor 113 is implanted. In some embodiments, such as Figure 3 As shown, the second braking component is integrated onto the unlocking transmission component and is in the form of a transmission component hook 107-4. Corresponding to the second braking component, as shown... Figure 3As shown, the linkage bracket 105 is provided with a bracket locking hook 105-3 adapted to the second braking component. Figure 9 As shown, in the initial state, the second braking component and the hook on the linkage bracket 105 are at a certain distance in both the direction of movement of the unlocking transmission member into the applicator 100 and in the direction of position change of the linkage bracket 105. Therefore, in the initial state, there is no constraint relationship between the linkage bracket 105 and the second braking component. However, when the linkage bracket 105 contacts the unlocking transmission member and moves under force, the bracket locking hook 105-3 and the transmission member hook 107-4 contact and engage, as shown in the figure. Since the unlocking transmission member is relatively fixed in the front-back direction, the above-mentioned engagement can prevent the linkage bracket 105 from returning to its original position.

[0059] The first braking component has a first energy storage after the linkage bracket 105 is actuated. After the linkage bracket 105 is released by the second braking component, it changes position under the action of the first energy storage and unlocks the first locking structure 105-1 from holding the indwelling device, so that the indwelling device can be separated from the applicator 100.

[0060] The puncture process of the applicator 100 can be roughly divided into the following five states:

[0061] Initial state: such as Figures 7-9 As shown, the indwelling device is held in the applicator 100 by the second locking structure 105-4 on the linkage bracket 105. The first locking structure 105-1 on the linkage bracket 105 does not act on the indwelling device. The unlocking transmission component does not contact the linkage bracket 105 and is not locked. The brake pad 114 jams the cam 108 so that the cam 108 cannot rotate.

[0062] Phase 1: Unlocking cam 108 begins the insertion of the puncture component into the host's skin, such as... Figures 10-11 As shown, the user applies pressure to the button to unlock the preset driving force, the stroke control track starts to rotate, the linkage bracket 105 moves towards the brake pad 114 so that the brake pad 114 unlocks the cam 108, and the first locking structure 105-1 of the linkage bracket 105 locks the retention device, and the linkage bracket 105 is also locked by the second braking structure.

[0063] Phase Two: Sensor 113 penetrates further into the host skin, such as... Figure 12 As shown, the linkage bracket 105, brake pad 114, and unlocking transmission component remain in the state at the end of the first stage.

[0064] Third stage: The guide portion 112 of sensor 113 needs to be retracted, leaving only sensor 113 inside the host skin. During retraction, the push portion 111 needs to hold sensor 113 in place to prevent sensor 113 from being pulled out of the host skin by the guide portion 112. Figure 13 As shown, the linkage bracket 105, brake pad 114, and unlocking transmission component remain in the state of the second stage.

[0065] Fourth stage: Both the pushing part 111 and the guiding part 112 retract into the applicator 100 to ensure safety, and the retention device is unlocked and thus disengaged from the applicator 100. Figures 14-15 As shown, the linkage bracket 105 is unlocked by the unlocking transmission component, thereby exiting the lock hole of the detention device and thus releasing the lock on the detention device.

[0066] In some embodiments, the unlocking transmission element is in the form of a lever with a fixed pivot position, such as... Figure 5 As shown in the figure, the central axis located next to the first outer arc surface 107-3 is the rotating shaft of the unlocking transmission component. The second braking component is located at one end of the lever and is fixed to the housing of the dynamic blood glucose meter through a deformable elastic element. In the embodiment of the present invention, for the entire applicator, the unlocking transmission component includes one on the left and one on the right, and the corresponding elastic elements are the left spring 117-1 and the right spring 117-2, respectively. The other end of the lever is associated with a timing structure. The lever remains stable under the action of the elastic element and the timing structure. After the puncture is completed, the timing structure changes the force relationship with the other end of the lever to release the above stable state. The lever rotates, causing the second braking component to release the linkage bracket 105.

[0067] In some embodiments, the timing structure includes the following structure:

[0068] A control block is mounted on a frame, the frame having a certain axis; the frame may be the unlocking transmission component. For the entire applicator, since there is one unlocking transmission component on the left and one on the right, the control block includes a left control block 109-1 and a right control block 109-2.

[0069] The unlocking control track also has two corresponding control blocks, which have a fixed relative position with the travel control track and rotate synchronously with the travel control track on a fixed axis; the unlocking control track has a track area and an unlocking area, and in the rotation direction of the unlocking control track, the unlocking area is located behind the track area.

[0070] The track area is arranged around the first rotating shaft with a constant diameter, and the unlocking area provides less support to the control block in the centripetal direction relative to the track area.

[0071] In the initial state of the applicator 100, the control block is fixedly arranged in the track area relative to the housing under the action of the frame and the track area, and the position of the control block relative to the housing is the first position.

[0072] The stroke control track and the unlocking control track rotate unidirectionally along a fixed axis under a preset driving force after the applicator 100 is unlocked. This causes the stroke control track to act on the puncture assembly in the firing return direction, thereby completing the puncture process. It also causes the unlocking control track to move relative to the control block. When the centripetal support of the unlocking control track on the control block transitions from the track area to the unlocking area, the control block leaves the first position to unlock the applicator 100's hold on the indwelling device. During this rotation, the central angle corresponding to the contact trajectory between the track area and the control block is greater than or equal to the rotation angle of the stroke control track during the puncture process.

[0073] In some preferred embodiments, the unlocking control track is an annular shape with an opening, and the unlocking area is the location of the opening so that the control block can pass through the inside of the annular ring in the thickness direction and disengage to the outside of the annular ring.

[0074] In some preferred embodiments, the unlocking control track is a ring with a boss on its inner surface, and the boss smoothly transitions to the end of the track segment so that the control block can contact the boss. The unlocking area is the position of the boss, thereby guiding the control block to disengage from the inside of the ring through the radial direction of the ring to the outside of the ring.

[0075] The above embodiment provides a linkage structure and applicator 100 for a dynamic blood glucose meter. By cooperating with the unlocking transmission component and the linkage structure, the applicator 100 can be unlocked and locked at multiple positions during the puncture process. The structure is ingeniously designed, and the same component such as the linkage bracket 105 and the first braking component can perform multiple functions. The solution is highly integrated, which ensures that the various components inside the applicator 100 cooperate reliably during the short puncture process, ensuring the smooth completion of the application process.

[0076] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A linkage structure for a continuous glucose monitoring system, characterized in that, include: Unlock the transmission component, which is used to receive a pushing force from outside the applicator and move into the applicator; The linkage bracket is located relative to the unlocking transmission member in the direction in which the unlocking transmission member moves toward the inside of the applicator, and its position changes due to the action of the unlocking transmission member after the unlocking transmission member moves a certain distance toward the inside of the applicator; The linkage bracket has a first locking structure, which locks the retention device after the linkage bracket changes position, so that the retention device remains in the applicator. The first braking component is used to lock the energy of the energy storage device in the initial state, and to release the lock on the energy storage device by the action of the linkage bracket after the position of the linkage bracket changes, so that the applicator can complete the sensor implantation under the action of the energy storage device. The second braking component locks the linkage bracket in response to the linkage bracket acting on the first braking component and releases the linkage bracket after the sensor is implanted. Wherein, the first braking component has a first energy storage after the linkage bracket is actuated, and the linkage bracket is released by the second braking component and changes position under the action of the first energy storage to unlock the first locking structure holding the indwelling device, so that the indwelling device can be separated from the applicator.

2. The linkage structure according to claim 1, characterized in that, The linkage bracket has a first working surface and is equipped with a guide limiting structure. The first working surface is not perpendicular to the direction in which the unlocking transmission member moves into the applicator, nor is it perpendicular to the guiding direction of the guide limiting structure. The linkage bracket contacts the unlocking transmission member through the first working surface and moves along the guiding direction.

3. The linkage structure according to claim 2, characterized in that, The unlocking transmission component has a first outer arc surface, and the unlocking transmission component contacts the first working surface through the first outer arc surface.

4. The linkage structure according to claim 2, characterized in that, The first braking component is an elastic element located in the guide direction.

5. The linkage structure according to claim 1, characterized in that, The linkage bracket has a second locking structure, which is used to hold the indwelling device in the applicator in the initial state.

6. The linkage structure according to claim 5, characterized in that, The unlocking directions of the first locking structure and the second locked structure are the same.

7. The linkage structure according to claim 6, characterized in that, The first locking structure and the second locking structure cooperate with the retention device through a locking tongue and a locking hole.

8. The linkage structure according to claim 2, characterized in that, The second braking component is integrated into the unlocking transmission component.

9. The linkage structure according to claim 8, characterized in that, The second braking component is in the form of a hook, and the linkage bracket is provided with a hook adapted to the second braking component; in the initial state, the second braking component and the hook on the linkage bracket are at a certain distance in the direction of movement of the unlocking transmission member into the applicator, and in the direction of position change of the linkage bracket.

10. The linkage structure according to claim 9, characterized in that, The unlocking transmission component is a lever with a fixed pivot position. The second braking component is located at one end of the lever and is fixed to the housing of the dynamic blood glucose meter through a deformable elastic element. The other end of the lever is associated with a timing structure. The lever remains stable under the action of the elastic element and the timing structure. After the puncture is completed, the timing structure changes the force relationship with the other end of the lever to release the above-mentioned stable state. The lever rotates, causing the second braking component to release the linkage bracket.

11. An applicator, characterized in that, Includes a housing, and the linkage structure as described in any one of claims 1-10 is housed within the housing.

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