Accurate control structure and applicator of a dynamic blood glucose meter in a retention device

Abstract

This invention provides a precise control structure and applicator for the indwelling device in a continuous glucose monitoring (CGM) meter. By incorporating a clock structure consisting of an unlocking control track and a control block, different areas on the unlocking control track apply varying forces to the control block. These forces switch precisely upon completion of the puncture, allowing the clock structure to correlate with the puncture process. This enables the device to sense the puncture and promptly unlock the indwelling device after the procedure. This mechanical structure offers precise control and high integration, making it a glucose monitoring product that provides accurate control within a relatively small size.

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 detecting hidden hyperglycemia and hypoglycemia that are not easily detected 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 precise control structure and applicator for the indwelling device in 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, one aspect of the present invention provides a precise control structure for the indwelling device in a continuous glucose monitoring system, disposed within the housing, comprising:

[0007] A control block is mounted on a frame, the frame having a certain axis;

[0008] The stroke control track can rotate around the first rotating shaft and is adapted to the puncture assembly to form a track slider structure;

[0009] The unlocking control track has a fixed relative position with the travel control track and rotates 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;

[0010] The track area is arranged around the first rotating shaft with equal diameter, and the unlocking area provides less support to the control block in the centripetal direction relative to the track area;

[0011] In the initial state of the applicator, 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;

[0012] The stroke control track and the unlocking control track rotate unidirectionally on a fixed axis under a preset driving force after the applicator is unlocked, so that the stroke control track acts on the puncture assembly to move in the firing return direction to complete the puncture process; and so that the unlocking control track forms a relative movement with the control block, and 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's holding of the indwelling device;

[0013] During the aforementioned rotation process, 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.

[0014] Furthermore, the travel control track and the unlocking control track are integrated on the cam.

[0015] Furthermore, the travel control track is a groove located in the wheel surface or a through groove extending through the thickness direction of the wheel surface, and the unlocking control track stands on the surface of the wheel surface.

[0016] Furthermore, the puncture assembly and the control block are located on different sides of the cam.

[0017] Furthermore, the surface in contact between the track area and the control block is an inner arc surface.

[0018] Furthermore, the unlocking control track is a ring 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 ring and disengage to the outside of the ring in the thickness direction.

[0019] Furthermore, the unlocking control track is a ring with a boss on the inner ring surface, and the boss smoothly transitions to the end of the track area 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 inner side of the ring through the radial direction of the ring to the outer side of the ring.

[0020] Furthermore, the control block is a roller.

[0021] Furthermore, the frame is in the form of a lever, the control block is located at one end of the lever, and the other end of the lever is fixed to the housing by a deformable elastic element.

[0022] A second aspect of this application provides an applicator including the control structure described in the first aspect of this application.

[0023] Beneficial effects:

[0024] As can be seen from the above technical solutions, the present invention provides a precise control structure and applicator for the indwelling device in a dynamic blood glucose meter. By setting a clock structure consisting of an unlocking control track and a control block, different areas on the unlocking control track apply different forces to the control block, and the force switches precisely when the puncture is completed. This allows the clock structure to be correlated with the puncture process, enabling the device to sense the puncture process and promptly unlock the indwelling device after puncture. The above mechanical structure offers precise control and high integration, making it a blood glucose meter product that provides precise control within a relatively small size.

[0025] 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.

[0026] 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

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the external structure of the applicator according to an embodiment of the present invention;

[0029] Figure 2 This is an exploded view of the components of the applicator according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the cam structure according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the first track according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the second track in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the left unlocking control track according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the right unlocking control track according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the left control block according to an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the structure of the left control track side when the applicator is in the initial state according to an embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure on the left control track side when the applicator reaches the end of the first stroke, according to an embodiment of the present invention.

[0038] Figure 11 This is a schematic diagram of the structure on the left control track side when the applicator reaches the end of the second stroke in an embodiment of the present invention;

[0039] Figure 12 This is a schematic diagram of the structure on the left control track side when the applicator reaches the end of the third stroke in an embodiment of the present invention;

[0040] Figure 13 This is a schematic diagram of the structure on the left control track side when the applicator reaches the end of the fourth stroke in an embodiment of the present invention;

[0041] Figure 14 This is a schematic diagram of another control track structure of the applicator according to an embodiment of the present invention;

[0042] Figure 15 This is a schematic diagram of the structure of the applicator on the left control track side during the puncture process according to an embodiment of the present invention;

[0043] Figure 16 This is a schematic diagram of the structure of the applicator on the left control track side after puncture, according to an embodiment of the present invention;

[0044] The meanings of the various reference numerals in the figure are as follows:

[0045] Applicator 100, left housing 101-1, right housing 101-2, housing fixing column 101-3, base 102, indwelling device body 103-1, indwelling device housing 103-2;

[0046] Drive tower 104, linkage bracket 105, left button 106-1, right button 106-2, left unlocking transmission component 107-1, right unlocking transmission component 107-2, cam 108, rotating shaft 108-1, cam fixing column 108-2, 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; left unlocking control rail 118-1, right unlocking control rail 118-2;

[0047] First track 115, second track 116, boss 119. Detailed Implementation

[0048] To better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0049] 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.

[0050] 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. It has a transmitter return structure, a puncture assembly, and a holding mechanism inside. The applicator 100 is provided with a button on the outside, which can be linked to the unlocking transmission assembly inside the applicator 100 (including a left unlocking transmission component 107-1 and a right unlocking transmission component 107-2) to allow the user to complete the puncture by pressing.

[0051] like Figure 2 The figure shown is an exploded view of the applicator 100 according to an embodiment of the present invention. Figure 2As presented, the applicator 100 of this embodiment of the invention comprises a left housing 101-1, a right housing 101-2, and a base 102 forming a housing. The housing has an internal firing 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 firing return structure to perform puncture. The aforementioned housing, buttons, the firing return structure inside the housing, and puncture components (including a guide 112, a pusher 111, and a sensor 113) together constitute the launcher. 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 housing 103-1 and an indwelling device casing 103-2. The indwelling device cooperates with the launcher; when no puncture is performed, the indwelling device remains inside the launcher. After puncture, the indwelling device can separate from the launcher and remain on the host's skin surface.

[0052] To control the puncture assembly to puncture along a preset route, a stroke control track is provided, which can rotate around a first rotating axis and is adapted to the puncture assembly to form a track slider structure. The stroke control track is located in a plane parallel to the launch return direction and includes a first track 115 and a second track 116. The first track 115 is adapted to the guide part 112, and the second track 116 is adapted to the push part 111.

[0053] The guide portion 112 has a cavity inside to accommodate the sensor 113. The cavity is a long and thin cavity adapted to the shape of the sensor 113. The end of the guide portion 112 has a structure for piercing the skin. A slider is fixed on the non-piercing end of the guide portion 112. The slider has an I-shaped structure. The slider cooperates with the drive tower 104 through the I-shaped structure. The drive tower 104 has a moving track, which is a groove that is adapted to the I-shaped structure on the slider.

[0054] The pushing part 111 has a pushing head and a slider fixed to one end of the pushing head. The shape of the pushing head is also adapted to the cavity as a long and thin linear structure with strong rigidity. The pushing head can be accommodated in the region located at the tail of the sensor 113 within the cavity. The slider of the pushing part 111 is located behind the slider of the guide part 112 in the firing direction. The slider of the guide part 112 is provided with a through hole, which communicates with the rear of the cavity of the guide part 112, allowing the slender pushing head to pass through the slider of the guide part 112 and enter the cavity of the guide part 112 until it approaches the tail of the sensor 113, which is also arranged in the cavity.

[0055] Each of the sliders of the guide part 112 and the push part 111 is provided with a protrusion for fitting into the corresponding stroke control track. The stroke control track rotates unidirectionally on a fixed axis under the action of a preset driving force after unlocking, so that the guide part 112 and the push part 111 move along the corresponding stroke control track, thereby controlling the stroke of the guide part 112 and the push part 111 in the launch return direction.

[0056] In some embodiments, the travel control track is arranged as follows: Figure 3 The cam 108 shown is an integral structure comprising a left cam and a right cam. The two cams are essentially circular plate-like structures and are arranged substantially parallel to each other. The cam 108 has a rotating shaft 108-1, which is fixed relative to the housing. The cam 108 can rotate within the housing around the rotating shaft 108-1. There is a certain distance between the left and right cams, and the space between the two cams 8 is for the drive tower 104 and the puncture assembly. Figure 4 and Figure 5 As shown, the end face structures of the left cam 8 and the right cam 8 are respectively, exhibiting the pattern of the first track 115 and the second track 116. The two tracks are located on the two cams 8 respectively and do not interfere with each other. A cam fixing post 108-2 is provided on the cam 8, and a housing fixing post 101-3 is provided on the corresponding housing. A pre-deformed torsion spring 110 is provided on the cam 8 and fixed to the cam fixing post 108-2 and the housing fixing post 101-3 respectively. After the user presses the button, the cam 8 is triggered to unlock from the brake pad 114 through the linkage bracket 105, etc., so that the cam 8 rotates under the action of the torsion spring 110.

[0057] Embodiments of the present invention provide a structure capable of precisely controlling the unlocking of the indwelling device after puncture, thereby allowing it to detach from the applicator. For example... Figure 6 and Figure 7 As shown, the cam 8 also integrates an unlocking control track. In this embodiment, a left unlocking control track 118-1 and a right unlocking control track 118-2 are respectively provided on the left and right cams. The unlocking control track and the stroke control track have a fixed relative position and rotate synchronously with the stroke control track. To ensure that the two tracks do not interfere with each other, the stroke control track is a groove located in the wheel surface or a through groove penetrating the thickness direction of the wheel surface, and the unlocking control track stands on the surface of the wheel surface. Therefore, the puncture component and the control block are located on different sides of the cam 8, which will not cause interference between the control block and the puncture component during movement.

[0058] Each unlocking control track is equipped with a corresponding control block, which is mounted on a frame with a fixed axis. In an embodiment of the invention, the control block is integrated into the unlocking transmission component; that is, the left control block 109-1 is integrated into the left unlocking transmission component 107-1, and the right control block 109-2 is integrated into the right unlocking transmission component 107-2. The unlocking transmission component is also used to receive a pushing force from outside the applicator and move inward to trigger the applicator to unlock. Figure 9 As shown, each unlocking transmission component includes a disc and two wings disposed around the circumference of the disc. The center of the disc is the fixed axis of the unlocking transmission component, which is fixed relative to the housing. The unlocking transmission component can rotate around this fixed axis. The two wings form a lever structure around the fixed axis. The control unit is fixed to one of the wings, and the other wing is fixed to the housing by a pre-deformed spring.

[0059] To enable the unlocking control track to sense the end of the puncture process, a track area and an unlocking area are provided on the unlocking control track. In the rotational direction of the unlocking control track, the unlocking area is located behind the track area. The track area is arranged with a constant diameter around the first rotation axis, and the support of the unlocking area on the control block in the centripetal direction is reduced relative to the track area. In the initial state of the applicator, the control block is fixedly positioned relative to the housing within the track area under the action of the frame and the track area. The position of the control block relative to the housing is the first position. Therefore, once the unlocking area of ​​the unlocking control track moves to the first position of the control block, the control block cannot remain in the first position due to the change in force, and a positional change occurs. Therefore, as long as the angle traversed by the unlocking area to the position of the control block is consistent with the angle traversed by the stroke control track when completing the puncture process, the sensing of the end of the puncture can be achieved.

[0060] In some preferred embodiments, the surface of the track area that contacts the control block is an inner arc surface. The control block can slide or roll in contact with the track area; preferably, the control block is as follows: Figure 8 The roller shown has its axis of rotation mounted on the unlocking transmission component and capable of rotating on the component. The roller's axis of rotation is parallel to the axis of rotation of the track area. When the track area moves relative to the control block, there is rolling friction between them, resulting in low frictional force.

[0061] In some other preferred embodiments, the contact between the track area control blocks is gear meshing, that is, the track area is provided with an internal gear and the control block is provided with an external gear.

[0062] Specifically, the stroke control track and the unlocking control track rotate unidirectionally on a fixed axis under a preset driving force after the applicator is unlocked, so that the stroke control track acts on the puncture assembly to move in the launch return direction to complete the puncture process; and so that the unlocking control track forms a relative movement with the control block, and 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's holding of the indwelling device.

[0063] In this rotation process, the track area can be provided with a certain redundant length. This redundant length is positioned in front of the track area in the rotation direction of the unlocking control track. The first position of the control block is located within the section of the track area, thus making the support of the control block by the track area relatively stable. Although this redundant length is in the form of a track, it never contacts the control block during rotation. Therefore, in these embodiments, during rotation, the central angle corresponding to the contact trajectory between the entire track area and the control block is greater than or equal to the rotation angle of the stroke control track during the puncture process.

[0064] In some embodiments, such as Figure 6 , Figure 7 as well as Figures 9 to 13 As shown, the unlocking control track is a ring 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 ring and disengage to the outside of the ring in the thickness direction.

[0065] In some other embodiments, such as Figures 14-16 As shown, the unlocking control track is a ring with a boss 119 on the inner ring surface, and the boss 119 smoothly transitions to the end of the track area so that the control block can contact the boss 119. The unlocking area is the position of the boss 119, thereby guiding the control block to disengage from the inner side of the ring through the radial direction of the ring to the outer side of the ring.

[0066] Taking the form of an open, circular unlocking control track as an example, such as... Figures 9 to 13 The diagram illustrates the structure at the unlocking control rail under different states of the applicator. The puncture process of the applicator 100 can be roughly divided into the following five states:

[0067] Initial state: The indwelling device remains within the applicator 100, the preset driving force is not unlocked, and the stroke control track, pusher 111, and guide 112 remain stationary. The control unit remains stationary within the unlock control track.

[0068] First stage: The user applies pressure to the button to unlock the preset driving force, the stroke control rail starts to rotate, and the pusher 111 and guide 112 move a distance along the launch direction under the control of the stroke control rail.

[0069] Second stage: Sensor 113 further enters the host skin under the action of pusher 111. During this process, guide 112 only serves as a guide and protection component for sensor 113. Guide 112 itself remains stationary and does not enter the host skin further.

[0070] Third stage: The guide part 112 needs to be retracted, leaving only the sensor 113 inside the host skin. During retraction, the push part 111 needs to hold the sensor 113 in place to prevent the sensor 113 from being pulled out of the host skin by the guide part 112.

[0071] In the first to third stages described above, the unlocking control rail rotates synchronously with the travel control rail, and there is relative movement between the control unit and the unlocking control rail, but the control unit remains in the first position relative to the housing. Figures 9 to 11 As shown, as the unlocking control track rotates, the relative position between the unlocking control track and the control unit changes, but the absolute position of the control unit remains unchanged.

[0072] 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. In this stage, as... Figure 13 As shown, the control unit disengages from the unlocking control track because the unlocking area of ​​the unlocking control track moves to the control unit.

[0073] The above embodiment, by setting a clock structure consisting of an unlocking control rail and a control block, utilizes different areas on the unlocking control rail to apply different forces to the control block, and the switching of these forces occurs precisely when the puncture is completed. This allows the clock structure to be correlated with the puncture process, enabling the device to sense the puncture process and promptly unlock the indwelling device after the puncture is completed. The above mechanical structure offers precise control and a high degree of integration, making it a blood glucose meter product that provides accurate control within a relatively small size.

[0074] 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 precise control structure for the indwelling device in a continuous glucose monitoring system, disposed within the casing, characterized in that, include: A control block is mounted on a frame, the frame having a certain axis; The stroke control track is integrated on a cam, can rotate around a fixed axis around the first rotating shaft, and is adapted to the puncture assembly to form a track slider structure; An unlocking control rail is integrated on the cam, has a fixed relative position with the stroke control rail, and rotates synchronously with the stroke control rail on a fixed axis; the unlocking control rail has a rail area and an unlocking area, and in the rotation direction of the unlocking control rail, the unlocking area is located behind the rail area; The track area is arranged around the first rotating shaft with equal diameter, and the unlocking area provides less support to the control block in the centripetal direction relative to the track area; In the initial state of the applicator, 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; The stroke control rail and the unlocking control rail rotate in one direction on a fixed axis under the action of a preset driving force after the applicator is unlocked, so that the stroke control rail acts on the puncture assembly to move in the launch return direction, thereby completing the puncture process; And to make the unlocking control track and the control block move relative to each other, and 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's hold on the indwelling device; During the aforementioned fixed-axis unidirectional rotation process, 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.

2. The control structure according to claim 1, characterized in that, The travel control track is a groove located in the wheel surface or a through groove that runs through the thickness direction of the wheel surface, and the unlocking control track stands on the surface of the wheel surface.

3. The control structure according to claim 2, characterized in that, The puncture assembly and the control block are located on different sides of the cam.

4. The control structure according to claim 2, characterized in that, The surface in contact between the track area and the control block is an inner arc surface.

5. The control structure according to claim 4, characterized in that, The unlocking control track is a ring 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 ring and disengage to the outside of the ring in the thickness direction.

6. The control structure according to claim 5, characterized in that, The unlocking control track is a ring with a boss on the inner ring surface, and the boss smoothly transitions to the end of the track area so that the control block can contact the boss. The unlocking area is the position of the boss, thereby guiding the control block to move from the inside of the ring through the radial direction of the ring to the outside of the ring.

7. The control structure according to any one of claims 1 to 6, characterized in that, The control block is a roller.

8. The control structure according to claim 7, characterized in that, The frame is in the form of a lever, the control block is located at one end of the lever, and the other end of the lever is fixed to the housing by a deformable elastic element.

9. An applicator, characterized in that, Includes the control structure described in any one of claims 1-8.

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