Needle assisting device with built-in functional block

Abstract

The invention relates to the technical field of medical instruments, in particular to a functional block built-in needle assisting device which comprises a shell, an inner shell, a needle assisting assembly and a functional block, an upper cover and a lower cover of the shell define an installation space, the inner shell is limited in the installation space, the needle assisting assembly is located in the installation space and installed on the inner shell, the functional block is located in the installation space, and the functional block is located in the installation space. The upper cover and the lower cover are arranged in the installation space and used for adsorbing unfavorable components in the installation space so as to reduce the content of components influencing a sensor in the analyte monitor in the installation space, so that the quality guarantee period of the sensor is ensured, and the probability that the sensor is polluted to cause failure or failure of the sensor is reduced. The lower cover or the inner shell is matched with the functional block to limit the functional block to move in a plane perpendicular to the arrangement direction of the upper cover and the lower cover, so that the position of the functional block in the mounting space is fixed, and the stability of the internal structure of the whole needle assisting device is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a needle-aid device with a built-in functional block. Background Technology

[0002] To monitor whether the glucose levels in diabetic patients are within a safe range in real time, diabetic patients usually choose to wear an analytical monitoring device. When wearing an analytical monitoring device, an assisted needle is needed. The assisted needle guides the analytical monitoring device into the patient's body, allowing the analytical monitoring device to come into contact with the patient's body fluids.

[0003] Existing needle applicator structures typically include an upper cover and a lower cover, which are sealed together by a sealing element. The analyte monitor is enclosed within the space formed by the upper and lower covers, and this enclosed space allows the sensor within the analyte monitor to have a long shelf life. However, if the upper and lower covers are not properly sealed, the environment within the space where the analyte sensor is located may contaminate the sensor, leading to sensor malfunction or failure. Summary of the Invention

[0004] This application provides a built-in needle assist device in a functional block to solve the technical problem that the needle assist device may become contaminated when the upper and lower covers are not properly sealed, leading to sensor malfunction or failure.

[0005] According to one aspect of this application, one embodiment provides a needle assist device with a built-in functional block, including a housing, an inner housing, a needle assist assembly, and a functional block:

[0006] The housing includes a detachably connected upper cover and a lower cover, which together enclose an installation space.

[0007] The inner shell is confined within the installation space for contact with the human body;

[0008] The needle-assist assembly is located within the installation space and mounted on the inner shell. The needle-assist assembly includes an analyte monitor. The needle-assist assembly has a locked state that is locked to the inner shell and an unlocked state that is released under external force to allow the analyte monitor to be implanted into the human body.

[0009] The functional block is located in the installation space and is used to adsorb harmful components in the installation space; the inner shell abuts against the functional block when the upper cover and the lower cover are connected to restrict the movement of the functional block in the arrangement direction of the upper cover and the lower cover; the lower cover or the inner shell cooperates with the functional block to restrict the movement of the functional block in a plane perpendicular to the arrangement direction of the upper cover and the lower cover.

[0010] In one alternative embodiment, the lower cover has a first limiting portion toward the upper cover, the functional block surrounds the first limiting portion, and the first limiting portion cooperates with the functional block to restrict the movement of the functional block in a plane perpendicular to the arrangement direction of the upper cover and the lower cover;

[0011] When the upper cover and the lower cover are connected, the inner shell has a protrusion that protrudes from the upper cover and extends into the lower cover. At least a portion of the protrusion abuts against the functional block in the arrangement direction of the upper cover and the lower cover to restrict the movement of the functional block toward the upper cover.

[0012] In one optional embodiment, the sidewall of the inner shell is arranged around the functional block, and the sidewall of the inner shell is provided with a first inner protrusion facing the functional block and an outer protrusion away from the functional block, and the sidewall of the lower cover is provided with a second inner protrusion facing the functional block.

[0013] When the upper cover and the lower cover are connected, the first inner protrusion is used to abut against the functional block, and the second inner protrusion and the outer protrusion abut against each other in the arrangement direction of the upper cover and the lower cover, so as to restrict the inner shell from moving away from the lower cover.

[0014] In one optional embodiment, the upper cover and the lower cover are sealed together by a sealing element, and the upper cover and the lower cover are detachably connected by screwing. The needle assist assembly has a guide needle for guiding the analyte monitor to be implanted into the human body. The needle assist device has a sleeve that covers the tip of the guide needle and is detachably connected to the guide needle by screwing.

[0015] The outer circumferential surface of the sleeve has a radially outward protrusion; the functional block can apply a torque to the radially outward protrusion to disassemble the sleeve during the process of screwing the lower cover and the upper cover apart; or the lower cover has a limiting structure facing the upper cover, the limiting structure can apply a torque to the radially outward protrusion to disassemble the sleeve during the process of screwing the lower cover and the upper cover apart.

[0016] In one optional embodiment, the radially protruding portion has a mating surface that abuts against the limiting structure or the functional block in the circumferential direction of the sleeve; one end of the outer surface of the radially protruding portion is connected to the outer circumferential surface in the circumferential direction of the sleeve, and the other end is connected to the mating surface; the distance between the outer surface and the central axis of the sleeve gradually increases in the circumferential direction of the sleeve from the outer circumferential surface to the mating surface.

[0017] In one alternative embodiment, the functional block has a first elastic arm facing the sleeve, the first elastic arm being used to abut against the radially outward protrusion in the circumferential direction of the sleeve; the first elastic arm is capable of elastic deformation to rotate past the radially outward protrusion in the circumferential direction of the sleeve to a position abutting against the radially outward protrusion during the screwing connection of the lower cover and the upper cover.

[0018] In one alternative embodiment, the distance between the first elastic arm and the central axis of the sleeve gradually increases or decreases in the circumferential direction of the sleeve.

[0019] In one optional embodiment, the limiting structure includes a second elastic arm and a radial protrusion connected to the end of the second elastic arm. The radial protrusion is used to abut against the radially outward protrusion in the circumferential direction of the sleeve. The second elastic arm is capable of elastic deformation so that the radial protrusion rotates past the radially outward protrusion in the circumferential direction of the sleeve to a position abutting against the radially outward protrusion during the process of screwing the lower cover and the upper cover together.

[0020] In one alternative embodiment, the distance between the radial protrusion and the central axis of the sleeve gradually increases or decreases in the circumferential direction of the sleeve.

[0021] In one alternative embodiment, the functional block has an elastic abutment portion that can abut against the limiting structure in the radial direction of the sleeve, so that the radial protrusion deforms toward the sleeve.

[0022] In one optional embodiment, the needle-assist assembly includes a monitor bracket for mounting an analyte monitor, the inner shell has a second limiting portion, and the monitor bracket has an elastic fitting portion, wherein the second limiting portion cooperates with the elastic fitting portion to place the needle-assist assembly in the locked state;

[0023] The top cover has an unlocking part, which can deform the elastic fitting part under the action of external force to switch the needle assembly to the unlocked state.

[0024] The built-in needle assist device according to the above embodiment includes a housing, an inner housing, a needle assist assembly, and a functional block. The housing includes a sealed and detachably connected upper cover and a lower cover, which enclose an installation space. The inner housing is confined within the installation space and is used for contact with the human body. The needle assist assembly is located within the installation space and mounted on the inner housing. The needle assist assembly includes an analyte monitor. The needle assist assembly has a locked state that is locked to the inner housing and an unlocked state that is released under external force to allow the analyte monitor to be implanted into the human body. The functional block is located within the installation space and is used to adsorb unfavorable components in the installation space, such as... It can adsorb dust, oxygen, microorganisms and moisture in the installation space to reduce the component content of the analyte monitor in the installation space, thereby ensuring the shelf life of the sensor and reducing the probability of sensor failure or malfunction due to contamination. When the upper cover and lower cover are connected, the inner shell abuts against the functional block to restrict the movement of the functional block in the arrangement direction of the upper cover and lower cover. The lower cover or inner shell cooperates with the functional block to restrict the movement of the functional block in a plane perpendicular to the arrangement direction of the upper cover and lower cover. In this way, the position of the functional block in the installation space is fixed, and the stability of the internal structure of the entire needle aid device is improved. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the needle-aid device built into the functional block in one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the internal structure of the needle-aid device built into the functional block in one embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the assembly and disassembly of the needle-aid device built into the functional block in one embodiment of this application;

[0028] Figure 4 This is a three-dimensional structural diagram of the sleeve according to one embodiment of the present application from one viewpoint;

[0029] Figure 5 This is a three-dimensional structural diagram of the sleeve according to one embodiment of this application from another perspective;

[0030] Figure 6 This is a three-dimensional structural diagram of the needle-aid device built into the functional block in one embodiment of this application;

[0031] Figure 7 This is a three-dimensional structural diagram of the lower cover according to one embodiment of this application;

[0032] Figure 8 This is a schematic diagram of the mating structure of the lower cover, functional block and sleeve of the built-in needle aid in one embodiment of this application;

[0033] Figure 9 This is a three-dimensional structural diagram of a functional block according to another embodiment of this application;

[0034] Figure 10 This is a three-dimensional structural diagram of the lower cover according to another embodiment of this application;

[0035] Figure 11 This is a schematic diagram of the structure of the lower cover, functional block and sleeve of the built-in needle aid in another embodiment of this application.

[0036] In the picture:

[0037] 1. Housing; 11. Top cover; 111. Unlocking part; 112. First protrusion; 113. Arc groove; 12. Bottom cover; 121. First limiting part; 1211. Arc limiting section; 1212. Linear limiting section; 122. Second inner protrusion; 123. Protrusion; 1231. Slot; 124. Limiting structure; 1241. Second elastic arm; 1242. Radial protrusion; 13. Installation space; 14. Seal;

[0038] 2. Inner shell; 21. Second limiting part; 22. First mating protrusion; 23. First elastic protrusion; 24. Guide part; 25. Protrusion; 26. Outer protrusion; 27. First inner protrusion;

[0039] 3. Needle assist assembly; 31. Monitor bracket; 311. Second elastic protrusion; 312. Third protrusion; 313. Elastic mating part; 3131. Second protrusion; 32. Analyte monitor; 33. Guide needle bracket; 34. Guide needle; 35. Needle assist spring; 36. Needle retraction spring; 37. Sleeve; 371. Helical protrusion; 372. Radial outward protrusion; 3721. Holding mating surface;

[0040] 4. Functional block; 41. Radial outer flange; 42. First elastic arm; 43. Elastic support part.

[0041] Explanation of reference numerals in parentheses in the accompanying drawings: The feature referred to by the reference numerals in parentheses in the accompanying drawings is the feature represented by both the number inside the parentheses and the number outside the parentheses. Detailed Implementation

[0042] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0043] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0044] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0045] This application discloses a built-in needle assist device within a functional block, used to assist in the implantation of an analyte monitor 32 into the human body. For details regarding the built-in needle assist device (hereinafter referred to as the needle assist device) in this application embodiment, please refer to... Figures 1 to 3 The system includes a housing 1, an inner housing 2, an auxiliary needle assembly 3, and a functional block 4. The housing 1 includes an upper cover 11 and a lower cover 12, which are detachably connected, such as by threads or by snap-fit ​​connections. The upper cover 11 and the lower cover 12 each have recesses facing each other, and the two recesses, when aligned, form an installation space 13.

[0046] The inner shell 2, the needle assist assembly 3, and the functional block 4 are all located within the installation space 13. The inner shell 2 is connected to the upper cover 11. The limiting structure on the upper cover 11 and the limiting structure on the needle assist assembly 3 can limit most of the inner shell 2 within the recess of the upper cover 11. When the needle assist device is in use, the lower cover 12 is separated from the upper cover 11, and part of the inner shell 2 can extend out of the upper cover 11 and is used to contact the human body.

[0047] The needle-assist assembly 3 is mounted on the inner shell 2. The needle-assist assembly 3 includes an analyzer 32, which includes a sensor (not shown in the figure). The needle-assist assembly 3 has a locked state that is locked to the inner shell 2 and an unlocked state that is released under external force to realize the implantation of the analyzer 32 into the human body.

[0048] In some embodiments, please refer to Figure 2 and Figure 3 The needle-assist assembly 3 includes a monitor bracket 31 for mounting an analyte monitor 32. The inner shell 2 has a second limiting part 21, and the monitor bracket 31 has an elastic fitting part 313. The second limiting part 21 and the elastic fitting part 313 cooperate to lock the needle-assist assembly 3. The upper cover 11 has an unlocking part 111, which can deform the elastic fitting part 313 under external force, thereby switching the needle-assist assembly 3 to the unlocked state.

[0049] For details, please continue to refer to Figure 2 and Figure 3 Most of the inner shell 2 is located in the upper cover 11. The upper cover 11 has a first protrusion 112 on its side wall and a first mating protrusion 22 on its inner shell 2. The first protrusion 112 can mate with the first mating protrusion 22 to prevent the inner shell 2 from coming out of the upper cover 11.

[0050] The inner shell 2 has a mounting cavity with an opening facing the lower cover 12. The monitor bracket 31 is located in the mounting cavity and connected to the inner shell 2. A second limiting part 21 is provided on the side wall of the inner shell 2, extending from the side wall of the inner shell 2 toward the mounting cavity. The elastic fitting part 313 includes a spring arm and a second protrusion 3131 located at the suspension end of the spring arm. The second protrusion 3131 is located on the side of the second limiting part 21 opposite to the lower cover 12 in the arrangement direction of the upper cover 11 and the lower cover 12, and the second protrusion 3131 and the second limiting part 21 abut against each other in the arrangement direction of the upper cover 11 and the lower cover 12 to limit the separation of the monitor bracket 31 from the inner shell 2. The state in which the second protrusion 3131 abuts against the second limiting part 21 is the locked state of the inner shell 2 and the needle assembly 3.

[0051] The unlocking part 111 is located on the upper cover 11. The unlocking part 111 corresponds to the position of the second protrusion 3131 in the arrangement direction of the upper cover 11 and the lower cover 12. Under the action of external force, the upper cover 11 can move relative to the inner shell 2 towards the human body. During the movement of the upper cover 11 towards the human body, the unlocking part 111 can abut against the second protrusion 3131, so that the second protrusion 3131 deforms towards the side wall of the inner shell 2 under the action of the spring arm, so as to separate from the second limiting part 21. The state in which the second protrusion 3131 is separated from the second limiting part 21 is the unlocked state of the inner shell 2 and the needle assembly 3.

[0052] In some embodiments, during the movement of the upper cover 11 toward the human body, under the action of external force, the upper cover 11 can drive the second protrusion 3131 and the entire monitor bracket 31 to move toward the human body through the unlocking part 111, thereby realizing the implantation of the analyte monitor 32 into the human body.

[0053] In some embodiments, please refer to Figure 2 and Figure 3 The needle-assisting assembly 3 also includes a needle-assisting spring 35. When the inner shell 2 and the needle-assisting assembly 3 are locked, the needle-assisting spring 35 is compressed between the inner shell 2 and the monitor bracket 31. When the unlocking part 111 separates the second protrusion 3131 from the second limiting part 21, the monitor bracket 31 can move toward the human body under the elastic force of the needle-assisting spring 35, thereby realizing the automatic implantation of the automatic analyzer monitor 32.

[0054] In some embodiments, please continue to refer to Figure 2 and Figure 3 The needle-assisting component 3 includes a guide needle 34, which extends in the arrangement direction of the upper cover 11 and the lower cover 12. The middle section of the guide needle 34 passes through the analyzer 32. During the needle-assisting process, the needle tip of the guide needle 34 can guide the sensing end in the analyzer 32 to be implanted into the human body.

[0055] The needle-assist assembly 3 also includes a guide needle holder 33 and a needle retraction spring 36. The guide needle holder 33 is located within the mounting cavity and connected to the monitor bracket 31. The needle retraction spring 36 is press-fitted between the monitor bracket 31 and the guide needle holder 33. The guide needle holder 33 is connected to the needle tail of the guide needle 34. As the guide needle holder 33 moves away from the human body, it can cause the guide needle 34 to separate from the human body.

[0056] The inner shell 2 has a first elastic protrusion 23, which includes a spring arm. Under the action of the spring arm, the first elastic protrusion 23 can deform toward the side wall of the upper cover 11. When the needle assist assembly 3 and the inner shell 2 are locked, under the elastic force of the needle retraction spring 36, the guide needle support 33 and the first elastic protrusion 23 abut against each other in the arrangement direction of the upper cover 11 and the lower cover 12, so as to restrict the guide needle support 33 from moving away from the human body relative to the monitor support 31.

[0057] The inner shell 2 also has a guide portion 24, and the monitor bracket 31 has a second elastic protrusion 311 and a third protrusion 312. The second elastic protrusion 311 has a spring arm, and the second elastic protrusion 311 and the third protrusion 312 can deform in a direction away from the side wall of the inner shell 2 under the action of the spring arm of the second elastic protrusion 311. When the monitor bracket 31 and the inner shell 2 are in the locked state, the guide portion 24 and the second elastic protrusion 311, and the third protrusion 312 and the guide needle bracket 33 are all arranged at intervals in the arrangement direction of the upper cover 11 and the lower cover 12, and the third protrusion 312 is located on the side of the second elastic protrusion 311 facing the guide needle bracket 33. When the monitor bracket 31 and the inner shell 2 are in the unlocked state, as the monitor bracket 31 moves towards the human body relative to the inner shell 2, the third protrusion 312 first comes into contact with the guide needle bracket 33 and moves towards the human body together with the guide needle bracket 33 to realize the implantation of the analyzer monitor 32 into the human body; the second elastic protrusion 311 gradually approaches the guide part 24. When the second elastic protrusion 311 comes into contact with the guide part 24, the guide part 24 can hold the second elastic protrusion 311, so that the second elastic protrusion 311 and the third protrusion 312 deform away from the side wall of the inner shell 2. The third protrusion 312 releases its holding effect on the guide needle bracket 33. Under the action of the needle withdrawal spring 36, the guide needle bracket 33 drives the guide needle 34 to move away from the human body to realize the needle withdrawal.

[0058] In some embodiments, the needle retraction spring 36 can be omitted. Instead, a structure that cooperates with the guide needle bracket 33 can be provided on the upper cover 11, so that the guide needle bracket 33 drives the guide needle 34 to retract when the upper cover 11 is pulled away from the human body. Alternatively, an operating push button can be provided on the upper cover 11 and connected to the guide needle bracket 33, so that the guide needle bracket 33 and the guide needle 34 can be retracted by operating the push button.

[0059] In some embodiments, please refer to Figure 2 The upper cover 11 and the lower cover 12 are sealed together by a sealing element 14. The outer circumferential surface of the upper cover 11 has a sealing groove, and the sealing element 14 is a sealing ring installed in the sealing groove. After the lower cover 12 is connected to the upper cover 11, part of the lower cover 12 covers the outer circumferential surface of the upper cover 11, and the inner wall of the lower cover 12 is sealed together with the upper cover 11 by the sealing ring. In other embodiments, the sealing element 14 may not be provided between the upper cover 11 and the lower cover 12, and the upper cover 11 and the lower cover 12 may be fitted together or have a gap fit.

[0060] In the embodiments of this application, please refer to Figure 2Functional block 4 is located within the mounting space 13 of the housing 1. Functional block 4 is used to adsorb undesirable components within the mounting space 13 when the upper cover 11 and lower cover 12 are connected. These undesirable components include oxygen, microorganisms, dust, and moisture that enter the mounting space 13 through the gap between the upper cover 11 and lower cover 12 when there is a poor seal or no seal between them. Functional block 4 contains components that can chemically react with oxygen to consume it, such as oxygen absorbers, or it contains bactericidal components or active adsorption components, such as activated carbon adsorption components and desiccants. Functional block 4 can purify and adsorb undesirable components entering the mounting space 13 while the needle aid is in storage, ensuring that the environment of the analyzer meets the requirements for a longer shelf life of the sensor in the analyzer monitor 32, and reducing the probability of sensor malfunction or failure due to contamination of the analyzer monitor 32.

[0061] Functional block 4 is located in the recess of lower cover 12. When upper cover 11 and lower cover 12 are connected, functional block 4 is confined within the mounting space 13 to improve the structural stability of the needle assist device. When upper cover 11 and lower cover 12 are connected, the portion of inner shell 2 extending into lower cover 12 can abut against functional block 4 in the arrangement direction of upper cover 11 and lower cover 12 to restrict the movement of functional block 4 in the arrangement direction of upper cover 11 and lower cover 12; lower cover 12 or inner shell 2 can also cooperate with functional block 4 to restrict the movement of functional block 4 in a plane perpendicular to the arrangement direction of upper cover 11 and lower cover 12, including translation and rotation.

[0062] During the disassembly and separation of the upper cover 11 and the lower cover 12, the functional block 4 can be separated from the upper cover 11 and the needle assembly 3 along with the lower cover 12.

[0063] In some embodiments, please refer to Figure 2 In a plane perpendicular to the arrangement direction of the upper cover 11 and the lower cover 12, the functional block 4 cooperates with the first limiting part 121 on the lower cover 12 to restrict the movement and rotation of the functional block 4 in a plane perpendicular to the arrangement direction of the upper cover 11 and the lower cover 12.

[0064] For details, please refer to Figure 3 , Figure 7 , Figure 8 , Figure 10 and Figure 11The first limiting part 121 extends toward the upper cover 11, and the functional block 4 is arranged around the first limiting part 121. The functional block 4 is generally annular, and its outer peripheral surface is cylindrical. The first limiting part 121 includes an arc-shaped limiting segment 1211 and a straight limiting segment 1212. The arc-shaped limiting segment 1211 is arranged coaxially with the functional block 4. There are two arc-shaped limiting segments 1211, which are arranged radially on the functional block 4. The outer surface of the arc-shaped limiting segment 1211 facing the functional block 4 is part of a cylindrical surface. The straight limiting segment 1212 extends radially on the functional block 4. There are two straight limiting segments 1212, and each straight limiting segment 1212 is connected to the outer peripheral surface of the corresponding arc-shaped limiting segment 1211.

[0065] Functional block 4 is provided with a recess that is adapted to the linear limiting segment 1212. The linear limiting segment 1212 can restrict the rotation of functional block 4 and its movement in a plane perpendicular to the arrangement direction of the upper cover 11 and the lower cover 12.

[0066] In some embodiments, a first limiting part may be provided on the inner shell 2 so that when the upper cover 11 and the lower cover 12 are connected, the first limiting part on the inner shell 2 restricts the movement of the functional block 4 in a plane perpendicular to the arrangement direction of the upper cover 11 and the lower cover 12.

[0067] In some embodiments, please refer to Figure 2 When the upper cover 11 and the lower cover 12 are connected, the inner shell 2 has a protrusion 25 that protrudes from the upper cover 11 and extends into the lower cover 12 in the arrangement direction of the upper cover 11 and the lower cover 12. At least a portion of the protrusion 25 abuts against the functional block 4 in the arrangement direction of the upper cover 11 and the lower cover 12 to restrict the movement of the functional block 4 toward the upper cover 11.

[0068] In one example, the outer peripheral surface of the functional block 4 has a radially outward flange 41 extending radially outward, and the sidewall of the inner shell 2 is located on the side of the radially outward flange 41 away from the lower cover 12 and abuts against the functional block 4 to restrict the movement of the functional block 4 toward the upper cover 11.

[0069] In one example, please refer to [link / reference]. Figure 2 The outer peripheral surface of the functional block 4 has a radially outward flange 41 extending radially outward. When the upper cover 11 and the lower cover 12 are connected, the side wall of the inner shell 2 is arranged around the functional block 4, and the side wall of the inner shell 2 is provided with a first inner protrusion 27 facing the functional block 4. The first inner protrusion 27 can abut against the radially outward flange 41 in the arrangement direction of the upper cover 11 and the lower cover 12 to restrict the movement of the functional block 4 toward the upper cover 11.

[0070] In some embodiments, please continue to refer to Figure 2The inner shell 2 has an outward protrusion 26 on its side wall that protrudes away from the functional block 4, and the lower cover 12 has a second inward protrusion 122 on its side wall that protrudes away from the functional block 4. The second inward protrusion 122 and the outward protrusion 26 abut against each other in the arrangement direction of the upper cover 11 and the lower cover 12 to restrict the movement of the inner shell 2 away from the lower cover 12 in the arrangement direction of the upper cover 11 and the lower cover 12. This restricts the inner shell 2 from shaking in the arrangement direction of the upper cover 11 and the lower cover 12 within the installation space 13, which helps to improve the structural stability of the inner shell 2 and the functional block 4 within the housing 1, that is, to improve the stability of the entire internal structure of the needle aid device.

[0071] In some embodiments, please refer to Figure 2 and Figure 3 With the upper cover 11 and lower cover 12 connected, the guide pin 34 extends toward the functional block 4. A sleeve 37 is typically attached to the guide pin 34, covering the tip of the guide pin 34. In the prior art, during the use of the needle aid, it is usually necessary to first remove the lower cover 12 and then remove the sleeve 37, requiring the needle aid to be disassembled twice before use.

[0072] To facilitate the use of the needle aid, in this embodiment, the upper cover 11 and the lower cover 12 are detachably connected by screwing. The sleeve 37 and the guide needle 34 are also detachably connected by screwing. The screwing direction of the sleeve 37 during disassembly is the same as the screwing direction of the lower cover 12 during disassembly.

[0073] One end of the sleeve 37 is open to cover the guide pin 34, and the other end is sealed with a rubber component to achieve a seal in the space occupied by the guide pin 34. Please refer to [reference needed]. Figure 4 and Figure 5 The outer circumferential surface of sleeve 37 has a radially outward protrusion 372. Please refer to... Figure 8 and Figure 11 Functional block 4 is arranged around sleeve 37. Functional block 4 can apply torque to the radially protruding part 372 of disassembly sleeve 37 during the process of screwing and disassembling the lower cover 12 and the upper cover 11. Alternatively, the lower cover 12 has a limiting structure 124 facing the upper cover 11. The limiting structure 124 can apply torque to the radially protruding part 372 of disassembly sleeve 37 during the process of screwing and disassembling the lower cover 12 and the upper cover 11.

[0074] In some embodiments, the upper cover 11 and the lower cover 12 can be connected by a thread with a large pitch, or they can be screwed together and then snapped together. In the snap-fit ​​method, an arc-shaped groove 113 is provided on the outer peripheral surface of the upper cover 11, which is arranged around the upper cover 11. One end of the arc-shaped groove 113 has an opening facing the lower cover 12, and the other end has a through hole. An elastic protrusion is provided on the wall of the through hole. A protrusion 123 is provided on the inner peripheral surface of the lower cover 12, and a locking groove 1231 is provided on the protrusion 123. The protrusion 123 can enter the arc-shaped groove 113 from the opening of the arc-shaped groove 113 and move along the arc-shaped groove 113 to the through hole, so that the elastic protrusion engages with the locking groove 1231, thus connecting the upper cover 11 and the lower cover 12. When it is necessary to separate the upper cover 11 and the lower cover 12, simply screw the lower cover 12 in the opposite direction to disengage the elastic protrusion from the locking groove 1231.

[0075] In some embodiments, for sleeve 37, please refer to Figures 3 to 5 A helical protrusion 371 is provided on the inner circumferential surface of the sleeve 37 near the opening. A recess is provided on the needle holder of the guide needle 34, and the helical protrusion 371 mates with the recess to connect the sleeve 37 and the guide needle 34. Please refer to [reference needed]. Figure 8 and Figure 11 The outer circumferential surface of the sleeve 37 is cylindrical, and a radially protruding part 372 is provided on the outer circumferential surface. The radially protruding part 372 has a retaining mating surface 3721. The retaining mating surface 3721 can abut against the limiting structure 124 or the functional block 4 on the lower cover 12 in the circumferential direction of the sleeve 37, so that the sleeve 37 can be disassembled by applying torque to the sleeve 37 by the lower cover 12 or the functional block 4 during the disassembly of the lower cover 12.

[0076] After the sleeve 37 is connected to the guide pin 34, during the connection of the upper cover 11 and the lower cover 12, as the lower cover 12 is screwed, the limiting structure 124 on the lower cover 12 or the structure on the functional block 4 that is used to hold the abutting mating surface 3721 can pass over the radially outward protrusion 372 along the outer side of the sleeve 37 in the circumferential direction and rotate to the position that abuts against the abutting mating surface 3721.

[0077] In some embodiments, there are two radially outward protrusions 372, which are arranged opposite each other in the radial direction of the sleeve 37. Please refer to... Figure 4 , Figure 5 , Figure 8 and Figure 11 The outer side of the radially protruding portion 372 is connected to the outer peripheral surface at one end of the sleeve 37 in the circumferential direction, and to the abutting mating surface 3721 at the other end. The abutting mating surface 3721 is also connected to the outer peripheral surface. The abutting mating surface 3721 may extend radially in the sleeve 37, or the extension direction of the abutting mating surface 3721 may have a small included angle with the radial direction of the sleeve 37.

[0078] To facilitate the smooth passage of the radially protruding portion 372 in the circumferential direction of the sleeve 37 over the radially protruding portion 372, the distance between the outer surface of the radially protruding portion 372 and the central axis of the sleeve 37 gradually increases in the circumferential direction of the sleeve 37 from the outer circumferential surface along the direction from the outer surface of the radially protruding portion 372 to the abutting mating surface 3721. The outer surface of the radially protruding portion 372 smoothly transitions to the outer circumferential surface. The outer surface of the radially protruding portion 372 can be a plane tangent to the outer circumferential surface, or it can be an arc-shaped surface or a curved surface that smoothly transitions to the outer circumferential surface.

[0079] In some embodiments, please refer to Figure 9 and Figure 11 With the upper cover 11 and lower cover 12 connected, the sleeve 37 extends into the lower cover 12, and the functional block 4 is arranged around the sleeve 37. The functional block 4 has a first elastic arm 42 facing the sleeve 37. The first elastic arm 42 is connected to the inner side of the functional block 4. There are two first elastic arms 42, which are arranged opposite each other in the radial direction of the functional block 4. The axial dimension of the first elastic arm 42 is smaller than the axial dimension of the functional block 4. The first elastic arm 42 is located away from the lower cover 12 in the axial direction of the functional block 4. The first elastic arm 42 is located on the side of the first limiting part 121 on the lower cover 12 facing the upper cover 11 in the arrangement direction of the upper cover 11 and the lower cover 12. The first elastic arm 42 is used to abut against the abutting mating surface 3721 of the radially outward protrusion 372 in the circumferential direction of the sleeve 37. The first elastic arm 42 can undergo elastic deformation so that during the process of screwing the lower cover 12 and the upper cover 11 to connect, the first elastic arm 42 can rotate along the outer side of the radially outward protrusion 372 of the sleeve 37 upward to a position that abuts against the abutting mating surface 3721.

[0080] In some embodiments, to increase the elastic deformation capability of the first elastic arm 42, please refer to... Figure 9 and Figure 11 The distance between the first elastic arm 42 and the central axis of the sleeve 37 gradually increases or decreases in the circumferential direction of the sleeve 37. In the circumferential direction of the sleeve 37, along the outer side of the radially outward protrusion 372 from the outer circumferential surface to the abutting mating surface 3721, the distance between the first elastic arm 42 and the central axis of the sleeve 37 gradually increases. In the circumferential direction of the sleeve 37, along the outer side of the radially outward protrusion 372 from the abutting mating surface 3721 to the outer circumferential surface, the distance between the first elastic arm 42 and the central axis of the sleeve 37 gradually decreases. This helps to reduce the included angle between the first elastic arm 42 and the inner side of the functional block 4, thereby improving the connection strength between the first elastic arm 42 and the inner side of the functional block 4 while ensuring that the first elastic arm 42 has a large deformation capacity.

[0081] In some embodiments, the first elastic arm 42 may be linear in shape, or please refer to [the relevant documentation]. Figure 9 and Figure 11 The shape of the first elastic arm 42 can also be arc-shaped or curved to further reduce the angle between the first elastic arm 42 and the inner side of the functional block 4. The arc-shaped or curved first elastic arm 42 protrudes towards the inner side of the functional block 4, which can increase the connection strength between the first elastic arm 42 and the inner side of the functional block 4, and also increase the elastic deformation capability of the first elastic arm 42.

[0082] In some embodiments, please refer to Figure 7 and Figure 8 The limiting structure 124 on the lower cover 12 can apply a disassembly torque to the sleeve 37 during the disassembly of the lower cover 12 and the upper cover 11. The limiting structure 124 extends toward the upper cover 11, and the functional block 4 is arranged around the limiting structure 124. There are two limiting structures 124, which are arranged opposite each other in the radial direction of the sleeve 37. The arrangement direction of the two limiting structures 124 is perpendicular to the arrangement direction of the two first limiting parts 121. When the upper cover 11 and the lower cover 12 are connected, the sleeve 37 extends into the lower cover 12, and the two limiting structures 124 and the two first limiting parts 121 are arranged around the sleeve 37. Please refer to... Figure 2 The limiting structure 124 includes a second elastic arm 1241 and a radial protrusion 1242 connected to the end of the second elastic arm 1241 away from the lower cover 12. The radial protrusion 1242 includes a radially inner protrusion protruding toward the sleeve 37. The radial protrusion 1242 is used to abut against the radially outer protrusion 372 on the sleeve 37 in the circumferential direction of the sleeve 37.

[0083] The second elastic arm 1241 can undergo elastic deformation so that the radial protrusion 1242 passes over the radial protrusion 372 along the outer side of the sleeve 37 during the process of screwing the lower cover 12 and the upper cover 11 to achieve connection, and rotates to a position that abuts against the abutting mating surface 3721.

[0084] In some embodiments, please refer to Figure 7 and Figure 8 The limiting structure 124 is an arc-shaped structure arranged around the sleeve 37. Under the resistance of the functional block 4 in the lower cover 12, the outer surface of the limiting structure 124 facing the functional block 4 and the outer surface of the arc-shaped limiting section 1211 are located on the same cylindrical surface. The radial protrusion 1242 is located at the end of the second elastic arm 1241 away from the lower cover 12. The radial protrusion 1242 protrudes radially inward relative to the second elastic arm 1241 towards the sleeve 37. The distance between the radial protrusion 1242 and the central axis of the sleeve 37 is the distance between the radially inner surface of the radial protrusion 1242 and the central axis of the sleeve 37.

[0085] To facilitate the radial protrusion 1242 passing over the radially outward protrusion 372 along the outer side of the radially outward protrusion 372 in the circumferential direction of the sleeve 37 during the screwing of the lower cover 12 and the upper cover 11, the distance between the radial protrusion 1242 and the central axis of the sleeve 37 gradually increases or decreases in the circumferential direction of the sleeve 37. The distance between the radial protrusion 1242 and the central axis of the sleeve 37 gradually increases in the circumferential direction of the sleeve 37 from the outer circumferential surface of the sleeve 37 along the outer side of the radially outward protrusion 372 to the abutting mating surface 3721, and the distance between the radial protrusion 1242 and the central axis of the sleeve 37 gradually decreases in the circumferential direction of the sleeve 37 along the outer side of the radially outward protrusion 372 from the abutting mating surface 3721 to the outer circumferential surface.

[0086] In some embodiments, the radial inner surface of the radial protrusion 1242 may be an arc-shaped surface, an inclined surface, or a curved surface.

[0087] The lower cover 12 is injection molded. After injection molding, the outer peripheral surface of the second elastic arm 1241 is inclined radially outward. In some embodiments, in order to ensure a large abutment area between the radial protrusion 1242 and the radially outward protrusion 372, that is, to increase the probability of disassembling the sleeve 37 simultaneously during the disassembly of the lower cover 12, the functional block 4 has an elastic abutment part 43. The elastic abutment part 43 can abut against the limiting structure 124 radially against the sleeve 37, so that the radial protrusion 1242 deforms toward the sleeve 37, increasing the circumferential abutment area between the radial protrusion 1242 and the sleeve 37.

[0088] For details, please refer to Figure 1 , Figure 7 and Figure 8 There are two elastic abutment portions 43, which are arranged opposite each other in the radial direction of the functional block 4. The elastic abutment portions 43 extend from the inner side of the functional block 4 toward the sleeve 37. The elastic abutment portions 43 have a force that abuts the limiting structure 124 of the lower cover 12 toward the central axis of the sleeve 37.

[0089] In order for the limiting structure 124 to smoothly pass over the radially outward protrusion 372 in the circumferential direction of the sleeve 37, and for the elastic support portion 43 to deform radially outward toward the functional block 4 in order to avoid the deformation of the limiting structure 124 in the radial direction, the elastic support portion 43 is provided at the end of the functional block 4 facing the upper cover 11. The elastic support portion 43 is a straight or arc-shaped support arm. The extension direction of the elastic support portion 43 has an angle with the radial direction of the functional block 4, so as to facilitate the deformation of the elastic support portion 43 in the radial direction to avoid the deformation of the limiting structure 124.

[0090] In other embodiments, in a structure that ensures a large circumferential abutment area between the radial protrusion 1242 on the limiting structure 124 and the radial outward protrusion 372 on the sleeve 37, the elastic abutment portion 43 on the functional block 4 may be omitted.

[0091] In embodiments where it is not necessary to simultaneously disassemble the lower cover 12 and the sleeve 37, the upper cover 11 and the lower cover 12 can also be detachably connected by a snap-fit ​​mechanism after insertion.

[0092] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A needle helper with a function block built-in, characterized by, include: The housing includes a detachably connected upper cover and a lower cover, the upper cover and the lower cover enclosing an installation space; An inner shell, which is confined within the mounting space and is intended to come into contact with a human body; A needle-assist assembly is located within the installation space and mounted on the inner shell. The needle-assist assembly includes an analyte monitor. The needle-assist assembly has a locked state that is locked to the inner shell and an unlocked state that is released under external force to allow the analyte monitor to be implanted into the human body. A functional block, located in the installation space, is used to adsorb harmful components within the installation space; when the upper cover and the lower cover are connected, the inner shell abuts against the functional block to restrict the movement of the functional block in the arrangement direction of the upper cover and the lower cover; the lower cover or the inner shell cooperates with the functional block to restrict the movement of the functional block in a plane perpendicular to the arrangement direction of the upper cover and the lower cover.

2. The needle helper with a function block built-in according to claim 1, wherein The lower cover has a first limiting portion facing the upper cover, the functional block surrounds the first limiting portion, and the first limiting portion cooperates with the functional block to restrict the movement of the functional block in a plane perpendicular to the arrangement direction of the upper cover and the lower cover; When the upper cover and the lower cover are connected, the inner shell has a protrusion that protrudes from the upper cover and extends into the lower cover. At least a portion of the protrusion abuts against the functional block in the arrangement direction of the upper cover and the lower cover to restrict the movement of the functional block toward the upper cover.

3. The needle-aid device built into the functional block as described in claim 2, characterized in that, The sidewalls of the inner shell are arranged around the functional block, and the sidewalls of the inner shell are provided with a first inner protrusion facing the functional block and an outer protrusion away from the functional block. The sidewalls of the lower cover are provided with a second inner protrusion facing the functional block. When the upper cover and the lower cover are connected, the first inner protrusion is used to abut against the functional block, and the second inner protrusion and the outer protrusion abut against each other in the arrangement direction of the upper cover and the lower cover, so as to restrict the inner shell from moving away from the lower cover.

4. The needle-aid device built into the functional block as described in any one of claims 1 to 3, characterized in that, The upper cover and the lower cover are sealed together by a sealing element. The upper cover and the lower cover are detachably connected by screwing. The needle assist assembly has a guide needle for guiding the analyzer to be implanted into the human body. The needle assist device has a sleeve that covers the tip of the guide needle and is detachably connected to the guide needle by screwing. The outer circumferential surface of the sleeve has a radially outward protrusion; the functional block can apply a torque to the radially outward protrusion to disassemble the sleeve during the process of screwing the lower cover and the upper cover apart; or the lower cover has a limiting structure facing the upper cover, the limiting structure can apply a torque to the radially outward protrusion to disassemble the sleeve during the process of screwing the lower cover and the upper cover apart.

5. The needle-aid device built into the functional block as described in claim 4, characterized in that, The functional block has a first elastic arm facing the sleeve, the first elastic arm being used to abut against the radially outward protrusion in the circumferential direction of the sleeve; the first elastic arm is capable of elastic deformation so that during the process of screwing the lower cover and the upper cover to connect, it rotates past the radially outward protrusion in the circumferential direction of the sleeve to a position abutting against the radially outward protrusion.

6. The needle-aid device built into the functional block as described in claim 5, characterized in that, The distance between the first elastic arm and the central axis of the sleeve gradually increases or decreases in the circumferential direction of the sleeve.

7. The needle-aid device built into the functional block as described in claim 4, characterized in that, The limiting structure includes a second elastic arm and a radial protrusion connected to the end of the second elastic arm. The radial protrusion is used to abut against the radial outward protrusion in the circumferential direction of the sleeve. The second elastic arm can undergo elastic deformation so that the radial protrusion rotates past the radial outward protrusion in the circumferential direction of the sleeve to abut against the radial outward protrusion during the process of screwing the lower cover and the upper cover to achieve connection.

8. The needle-aid device built into the functional block as described in claim 7, characterized in that, The distance between the radial protrusion and the central axis of the sleeve gradually increases or decreases in the circumferential direction of the sleeve.

9. The needle-aid device built into the functional block as described in claim 7, characterized in that, The functional block has an elastic abutment portion that can abut against the limiting structure in the radial direction of the sleeve, so that the radial protrusion deforms toward the sleeve.

10. The needle-aid device built into the functional block as described in any one of claims 1 to 3, characterized in that, The needle-assist assembly includes a monitor bracket for mounting an analyte monitor. The inner shell has a second limiting portion, and the monitor bracket has an elastic fitting portion. The second limiting portion cooperates with the elastic fitting portion to put the needle-assist assembly in the locked state. The top cover has an unlocking part, which can deform the elastic fitting part under the action of external force to switch the needle assembly to the unlocked state.

Images