A needle aid for an implantable bio-information sensor

Abstract

This application relates to the field of bioinformatics monitoring technology and provides an implantable bioinformatics sensor needle aid, solving the technical problem that existing needle aids cannot be reused. It includes an upper housing, a trigger button, and an implantation mechanism. The implantation mechanism has a resettable needle seat with a locking claw for detachably engaging a guide needle. The implantation mechanism is slidably disposed within the upper housing. When the implantation is initiated, pressing the trigger button moves the implantation mechanism down to its lower limit position, simultaneously moving the needle seat down to its lower limit position and then retracting. The lower limit position of the needle seat completes the implantation of the bioinformatics sensor, and the retraction of the needle seat completes the removal of the guide needle. Pushing the implantation mechanism upward resets the implantation mechanism, needle seat, and trigger button, enabling the needle aid to be reused.

Description

Technical Field

[0001] This application relates to the field of bioinformatics monitoring technology, and in particular to an implantable bioinformatics sensor needle. Background Technology

[0002] With the widespread adoption of technologies such as continuous glucose monitoring, implantable micro-biosensors are increasingly used. Implantation typically requires the use of a needle applicator to guide the sensor into the subcutaneous tissue via a guide needle; the guide needle must then automatically retract after implantation.

[0003] However, most implantation devices are designed for single use only, and the entire device is discarded after each implantation procedure. For users who need to replace sensors periodically, the frequent disposal of implantation devices results in significant material waste and economic burden, while also increasing the pressure of medical waste disposal.

[0004] Existing technologies attempt to provide reusable needle assist solutions, but they generally suffer from problems such as cumbersome reset operations, multiple reset steps, and the need for special tools. Furthermore, there is a lack of systematic linkage reset design between the ejection implantation mechanism, the needle seat retraction mechanism, and the triggering mechanism, which means that each component needs to be reset independently step by step, resulting in low operational efficiency. During the reset process, the mechanism is prone to jamming or incomplete reset, which affects the reliability and safety of the next implantation.

[0005] Therefore, how to achieve linkage reset of the ejection implantation mechanism, needle seat and trigger key of the needle aid device through reasonable structural design, so that the core components of the needle aid device can be reused multiple times, is a technical problem that urgently needs to be solved in this field.

[0006] The statements herein are provided only as background information in connection with this application and do not necessarily constitute technical information. Summary of the Invention

[0007] Based on this, it is necessary to address the issues of resource waste caused by the single-use of implantable bio-information sensor needle aids, as well as the technical problems of complex reset operations and insufficient linkage in existing reusable solutions. To provide a needle aid for implantable bio-information sensors, a reasonable mechanism design is needed to achieve the linkage reset of the ejection implantation mechanism, needle seat, and ejection trigger key, so that the core components of the needle aid can be reused multiple times.

[0008] The technical solution adopted in this invention is as follows: An implantable bio-information sensor needle ejector includes an upper housing, a ejection trigger button, and an ejection implantation mechanism. The ejection implantation mechanism has a resettable needle holder internally, and the needle holder is equipped with a locking claw for detachably engaging a guide needle. The ejection implantation mechanism is slidably disposed within the upper housing. Upon activation, pressing the ejection trigger button moves the ejection implantation mechanism to its lower limit position, simultaneously causing the needle holder to retract after reaching its lower limit position. The lower limit position of the needle holder completes the implantation of the bio-information sensor, and the retraction of the needle holder completes the withdrawal of the guide needle. Pushing the ejection implantation mechanism upward resets the mechanism, needle holder, and ejection trigger button. This design, through the sliding design of the ejection implantation mechanism and the resettable design of the needle holder, allows the core components of the entire needle ejector to return to their initial state after a single implantation operation with a simple upward push, achieving reusability of the needle ejector and avoiding waste caused by discarding the entire device.

[0009] Optionally, the needle hub is provided with locking ears on both sides, and the two sides of the needle hub are connected to the top of the ejector implantation mechanism via a first return spring. When the needle hub moves down to the lower limit position with the ejector implantation mechanism, the locking ears are pushed open, and the needle hub retracts under the action of the first return spring. This solution achieves automatic retraction of the needle hub after implantation by coordinating the energy storage of the first return spring and the release of the locking ears, so that the needle removal action can be completed automatically without additional operation, ensuring the timeliness and reliability of needle removal.

[0010] Optionally, the ejection implantation mechanism includes a resettable launcher, which is slidably disposed within the upper housing. The launcher has limiting grooves on both sides, and limiting blocks within these grooves divide them into upper and lower parts. The locking ear slides controllably up and down within the limiting grooves. Before implantation, the locking ear is located below the limiting blocks in the limiting grooves. When the needle seat moves to its lower limit position, the locking ear is pushed away from the limiting blocks. Under the action of a first reset spring, the locking ear moves upward to the upper part of the limiting groove, completing the retraction of the needle seat. This design, through the partitioned design of the limiting grooves and limiting blocks, precisely constrains the movement range of the locking ear, ensuring that the needle seat is stably held in the preparatory position before implantation and reliably released to complete retraction after implantation, thus achieving controllable switching of the needle seat's movement state.

[0011] Optionally, a fixing base is also included, which is fixed inside the upper housing. The launching base is slidably disposed within the fixing base. Pressing protrusions are provided on both sides of the fixing base. Pressing contacts are provided on both sides of the needle holder, and locking ears are located on both sides of the pressing contacts. When the needle holder moves down to its lower limit position, the pressing protrusions push the pressing contacts inward, and the pressing contacts cause the locking ears to disengage from the limiting block. This solution, through the corresponding engagement of the pressing protrusions on the fixing base and the pressing contacts on the needle holder, automatically triggers the release action of the locking ears when the needle holder reaches its lower limit position, eliminating the need for an additional triggering mechanism and ensuring the accuracy of the needle withdrawal timing.

[0012] Optionally, each of the limiting grooves is provided with two limiting blocks, which form a guide groove that communicates with the limiting groove. The pressure contact can slide through the guide groove, while the locking ear cannot pass through it. This design utilizes the size difference between the pressure contact and the locking ear to achieve selective passage through the guide groove. This ensures that after the needle seat retracts, the locking ear is stably locked in the upper part of the limiting groove, preventing accidental reset. Simultaneously, during the reset operation, the pressure contact can smoothly slide through the guide groove to guide the needle seat back to its initial position, thus balancing locking reliability and reset smoothness.

[0013] Optionally, the upper sides of the launcher are provided with upward-extending locking arms, and the lower end of the launcher is provided with a lower annular stop. The fixed base is provided with an upper annular stop and an upper locking groove. The locking connector of the upward-extending locking arm is used to lock into the upper locking groove. A compression spring is provided between the upper annular stop and the lower annular stop. Pressing the ejection trigger button releases the locking connector from the upper locking groove. Under the action of the elastic potential energy of the compression spring, the launcher is pushed downward relative to the fixed base, completing the downward movement of the launcher. This scheme uses the compression spring to pre-store elastic potential energy and locks it in place by the locking relationship between the locking connector and the upper locking groove. Pressing the trigger button instantly releases the spring energy to drive the launcher to move downward quickly, ensuring the consistency of speed and force in the implantation action.

[0014] Optionally, the mounting base is provided with a lower locking groove, within which the locking connector can slide controllably up and down. After the locking connector is released from the upper locking groove, under the elastic potential energy of the compression spring, the locking connector moves down to the lower part of the lower locking groove, completing the downward movement of the launch base. This design limits the position of the locking connector after its downward movement by using the lower locking groove, ensuring that the launch base is stably held at the lower limit position after ejection, providing a clear and reliable starting state for subsequent reset operations.

[0015] Optionally, the ejection trigger button is connected to the outside of the upper housing via a second return spring. The ejection trigger button is equipped with a pressure-contact protrusion that can be inserted into the upper housing. When the ejection trigger button is pressed, the pressure-contact protrusion is pushed into the upper housing, disengaging the locking connector from the upper locking slot, and the second return spring is compressed, generating elastic deformation. When the ejection trigger button is released, it resets under the elastic potential energy of the second return spring, causing the pressure-contact protrusion to reset as well. This design enables the ejection trigger button to have an automatic reset capability, returning to its original position after being pressed and released, eliminating the need for a separate reset operation on the trigger button and simplifying the overall reset process.

[0016] Optionally, the claw is locked and unlocked by a flat latch at the upper end of the guide needle. This design, through the rotational locking and unlocking cooperation between the flat latch and the claw, ensures the secure connection of the guide needle during implantation and also enables convenient disassembly and assembly when replacing the guide needle, providing a structural basis for the reusability of the needle assist device and consumable replacement.

[0017] Optionally, as a first reset method, a lower housing is also included. The lower housing and the upper housing are threadedly connected, and the lower housing is provided with a sealing protective cover. The lower housing rotates clockwise relative to the upper housing, pushing the transmitter seat upward. The compression spring is compressed and deformed, causing the locking connector to disengage from the lower locking groove and move upward into the upper locking groove, completing the reset of the transmitter seat. When the transmitter seat moves upward, the needle seat remains stationary. The needle seat moves upward relative to the transmitter seat, and the locking ear moves downward and engages with the lower part of the limiting groove. The pressure contact slides into the guide groove, completing the downward movement of the needle seat. The sealing protective cover engages with the guide needle. The flat buckle of the guide needle unlocks from the claw as the sealing protective cover rotates. The guide needle and sealing protective cover are removed, and a new guide needle and bio-information sensor are installed, completing the reset of the needle seat. This design converts rotational motion into axial thrust through the threaded transmission between the lower and upper housings. A single rotational operation can simultaneously complete three actions: launcher reset, needle seat reset, and guide needle unlock. The operation is extremely simple and intuitive, making it especially suitable for patients with limited operational abilities to use independently.

[0018] Optionally, as a second reset method, the transmitter base is pushed upwards by hand. The compression spring is compressed and deformed, causing the locking connector to disengage from the lower locking groove and move upwards into the upper locking groove, thus resetting the transmitter base. When the transmitter base moves upwards, the needle seat remains stationary. The needle seat moves downwards relative to the transmitter base, and the locking ear moves downwards and engages with the lower part of the limiting groove. The pressure contact slides into the guide groove, completing the downward movement of the needle seat. By rotating the guide pin in the reverse direction with a wrench, the flat buckle unlocks from the claw, the guide pin is removed, and a new guide pin and bio-information sensor are installed, completing the reset of the needle seat. This solution provides an alternative reset method that eliminates the need for threaded transmission in the lower housing. Reset is achieved through manual pushing and wrench-assisted rotation, increasing the flexibility of the reset operation and adapting to the needs of different application scenarios. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 2 Another structural schematic diagram of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 3 Exploded view of the structure of the needle-aid device provided in one or more embodiments of this application; Figure 4 Exploded views of the structure of a sensor assembly provided in one or more embodiments of this application; Figure 5 This is a schematic diagram of the structure of a guide pin provided in one or more embodiments of this application; Figure 6 A schematic diagram of the guide pin from another angle provided in one or more embodiments of this application; Figure 7 Another schematic diagram of the guide pin provided in one or more embodiments of this application; Figure 8 This is a schematic diagram of the structure of the needle holder provided in one or more embodiments of this application; Figure 9 This is a schematic diagram of the needle holder from another angle, provided in one or more embodiments of this application. Figure 10 Another schematic diagram of the needle holder provided in one or more embodiments of this application; Figure 11 This is a schematic diagram of the structure of the guide needle inserting into the needle holder provided in one or more embodiments of this application; Figure 12 This is a schematic diagram of the structure of the guide pin locking pin seat provided in one or more embodiments of this application; Figure 13This is a schematic diagram of the structure of the launcher provided in one or more embodiments of this application; Figure 14 This is a schematic diagram of the structure of the fixing base provided in one or more embodiments of this application; Figure 15 This is a structural schematic diagram of the mounting base provided in one or more embodiments of this application from another angle; Figure 16 A schematic diagram of the structure of the transmitter and needle holder assembly provided for one or more embodiments of this application; Figure 17 A schematic diagram of the assembly of the transmitter, needle holder, and fixing base provided for one or more embodiments of this application; Figure 18 This is a schematic diagram of the structure of the lower housing provided in one or more embodiments of this application; Figure 19 This is a structural schematic diagram of the lower housing from another angle, provided for one or more embodiments of this application; Figure 20 This is a schematic diagram of the structure of the protective cover mounting base provided in one or more embodiments of this application; Figure 21 A structural schematic diagram of the protective cover mounting base provided in one or more embodiments of this application from another angle; Figure 22 This is a schematic diagram of the structure of a sealing protective cover provided in one or more embodiments of this application; Figure 23 A structural schematic diagram of the sealing protective cover provided in one or more embodiments of this application from another angle; Figure 24 A cross-sectional view of the bioinformatics monitoring kit provided in one or more embodiments of this application before it is used after leaving the factory; Figure 25 A cross-sectional view from another angle before use of the bioinformatics monitoring kit provided in one or more embodiments of this application after it has left the factory; Figure 26 for Figure 25 A magnified view of a portion of point A in the middle; Figure 27 Another cross-sectional view of the bioinformatics monitoring kit provided for one or more embodiments of this application before use after leaving the factory; Figure 28 A schematic diagram of the structure of the bioinformatics monitoring kit provided in one or more embodiments of this application, showing the lower shell rotating relative to the upper shell before implantation; Figure 29 A cross-sectional view of the lower shell rotating relative to the upper shell before implantation of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 30A cross-sectional view of the bioinformatics monitoring kit provided in one or more embodiments of this application before implantation, showing the lower shell rotated relative to the upper shell at another angle; Figure 31 for Figure 30 A magnified view of a portion of point B in the middle; Figure 32 Another cross-sectional view of the bioinformatics monitoring kit provided in one or more embodiments of this application, showing the lower shell rotated relative to the upper shell before implantation; Figure 33 A schematic diagram of the structure of the bioinformatics monitoring kit provided in one or more embodiments of this application, showing the lower shell detaching from the upper shell before implantation; Figure 34 A cross-sectional schematic diagram of the lower shell detaching from the upper shell before implantation of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 35 A cross-sectional schematic diagram of the lower shell of the bioinformatics monitoring kit provided in one or more embodiments of this application detaching from the upper shell at another angle before implantation; Figure 36 A schematic diagram of the structure of the bio-information monitoring kit provided in one or more embodiments of this application, showing the implantation triggered by pressing the ejection trigger key; Figure 37 A cross-sectional schematic diagram of the implantation triggered by pressing the ejection trigger key of the bio-information monitoring kit provided in one or more embodiments of this application; Figure 38 A cross-sectional view of another angle showing the implantation triggered by pressing the ejection trigger key of the bio-information monitoring kit provided in one or more embodiments of this application; Figure 39 A schematic diagram of the structure of the bioinformatics monitoring kit provided in one or more embodiments of this application when it is withdrawn after implantation; Figure 40 A cross-sectional schematic diagram of the bioinformatics monitoring kit provided in one or more embodiments of this application during its retraction after implantation; Figure 41 A cross-sectional view from another angle when the bioinformatics monitoring kit provided in one or more embodiments of this application is withdrawn after implantation; Figure 42 A schematic diagram of the structure of the bioinformatics monitoring kit provided in one or more embodiments of this application when it begins to reset; Figure 43 A cross-sectional schematic diagram of the bioinformatics monitoring kit provided in one or more embodiments of this application when it begins to reset; Figure 44 A cross-sectional view from another angle when the bioinformatics monitoring kit provided in one or more embodiments of this application begins to reset; Figure 45A schematic diagram of the structure of the bioinformatics monitoring kit provided in one or more embodiments of this application, showing the continuous rotation of the lower shell relative to the upper shell during reset; Figure 46 A cross-sectional schematic diagram showing the continuous rotation of the lower shell relative to the upper shell during reset of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 47 A cross-sectional schematic diagram showing the lower housing rotating continuously relative to the upper housing at another angle during reset of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 48 for Figure 47 A magnified view of a portion of point C in the middle; Figure 49 Another structural schematic diagram of the bioinformatics monitoring kit provided in one or more embodiments of this application, showing that the lower shell continuously rotates relative to the upper shell during reset; Figure 50 A cross-sectional schematic diagram showing the continuous rotation of the lower shell relative to the upper shell during reset of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 51 A cross-sectional schematic diagram showing the lower housing rotating continuously relative to the upper housing at another angle during reset of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 52 A schematic diagram of the structure for resetting the needle aid in the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 53 A cross-sectional schematic diagram of the needle repositioning process of the bioinformatics monitoring kit provided in one or more embodiments of this application; Figure 54 A cross-sectional view of the bioinformatics monitoring kit provided in one or more embodiments of this application after the needle repositioning is completed; Figure 55 for Figure 54 A magnified view of a portion of point D.

[0020] Explanation of reference numerals in the attached figures: 01. Needle Aid Device; 02. Sensor Assembly; 1. Upper Housing; 011. Limiting Protrusion; 2. Ejection Trigger Key; 21. Pressure Protrusion; 3. Ejection Implantation Mechanism; 4. Needle Base; 40. Upper Elastic Clamping Arm; 41. Clamping Claw; 42. Pressure Contact; 43. Clamping Ear; 44. Anti-rotation Clamping Slot; 45. Clamping Protrusion; 46. Clamping Slot; 47. First Clamping Protrusion; 5. Guide Needle; 51. Flat Clamping Buckle; 52. Needle Head; 53. Upper Clamping Buckle; 54. Lower Clamping Buckle; 55. Clamping Protrusion; 56. Needle Body; 6. First Reset Spring; 7. Launcher; 71. Limiting Slot; 711. Limiting Stop; 72. Guide Slot; 73. Lower Annular Edge; 74. Upper Extending Clamping Arm; 741. Clamping Connector; 75. Spring Mount 751. Mounting base; 8. Compression spring; 9. Second return spring; 10. Lower housing; 101. Sealing protective cover; 1011. Guide block; 102. Guide groove; 1021. Sloping section; 1022. Planar buffer section; 1023. Block limiting section; 103. Snap-fit ​​cavity; 104. Snap-fit ​​arm groove; 105. Snap-fit ​​protrusion groove; 11. Fixing base; 111. Upper annular retaining edge; 112. Upper groove; 113. Lower snap-fit ​​groove; 114. Pressure protrusion; 14. Bioinformation monitor body; 141. Guide needle through hole; 15. Protective cover mounting base; 151. Elastic snap-fit ​​arm; 152. Mounting sleeve; 1521. Snap-fit ​​block groove; 153. Push spring; 154. Guide protrusion. Detailed Implementation

[0021] To make the technical solutions and beneficial effects of this application more apparent and understandable, a detailed description is provided below by listing specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meaning as those in the technical field to which this application pertains.

[0022] It should be noted that in the description of this invention, the terms "upper", "lower", "inner", "outer", "both sides", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In the description of this invention, "resettable" means that after a certain ejection implantation action is completed, the relevant component can be restored to its initial state before ejection by external force so as to perform the next implantation operation.

[0024] Lower limit position: refers to the lowest position that the relevant component can reach when sliding in the vertical direction.

[0025] Upper limit position: refers to the highest position that the relevant component can reach when sliding in the vertical direction.

[0026] Retraction: After the pointer seat has reached the lower limit position and completed implantation, it moves upward in the opposite direction to the implantation direction to withdraw the guide needle from the subcutaneous tissue.

[0027] Example 1 This embodiment provides the overall structure of an implantable bioinformatics monitoring kit and the basic working principle of the needle assist device.

[0028] See appendix Figure 3 and attached Figure 4 , attached Figure 3 A schematic diagram of the needle-aid device is attached. Figure 4 The diagram shows the structure of the sensor assembly. The implantable bioinformatics monitoring kit of this embodiment includes a needle assist device 01 and a sensor assembly 02, which are detachable. The needle assist device 01 is the main device for achieving ejection implantation and guide needle retraction, and the sensor assembly 02 is a replaceable consumable module containing the guide needle 5 and a sensor.

[0029] The needle aid 01 includes an upper housing 1, a ejection trigger key 2, and an ejection implantation mechanism 3. The upper housing 1 is the main outer shell structure of the needle aid 01, and is a hollow cylindrical shape. A through hole for mounting the ejection trigger key 2 is provided on the side wall of the upper housing 1. The ejection implantation mechanism 3 is disposed inside the upper housing 1 and is slidably disposed within the upper housing 1. The inner wall of the upper housing 1 is provided with a guide rail or guide surface extending in the vertical direction, and the outer wall of the ejection implantation mechanism 3 is provided with a cooperating guide structure, allowing the ejection implantation mechanism 3 to slide vertically along the axial direction of the upper housing 1 without circumferential rotation or radial offset. In other alternative embodiments, the ejection implantation mechanism 3 can also achieve vertical sliding through the cooperation of a slide rail and a slide groove, or the clearance cooperation of a cylindrical surface and a cylindrical hole.

[0030] Reference Appendix Figure 1 The ejection trigger key 2 is located on the outer side of the upper housing 1. The outer side of the ejection trigger key 2 is the pressing surface, and the inner side has a pressure protrusion that passes through the upper housing 1 to trigger the ejection implantation mechanism 3.

[0031] The ejection implantation mechanism 3 has a resettable needle seat 4 inside. The needle seat 4 is a component used to support and drive the movement of the guide needle 5. The lower part of the needle seat 4 is provided with a claw 41, which is used to detachably engage the guide needle 5.

[0032] The sensor assembly 02 is equipped with a guide pin 5 and a bio-information monitor body 14, which can be detached and installed.

[0033] Reference Appendix Figure 5 , attached Figure 5 This is a schematic diagram of the guide needle. The guide needle 5 is a rigid needle body with a pointed tip. The upper end of the guide needle 5 is the needle head 52, and the lower end is the needle body 56. The needle body 56 is connected to the lower part of the needle head 52.

[0034] The bio-information monitor body 14 is a patch-type monitoring device containing flexible sensing electrodes. The bottom surface of the bio-information monitor body 14 is provided with a medical adhesive layer for application to the human skin surface. The needle body 56 is a grooved needle, and the sensing electrodes are contained within the grooved needle and are implanted into the human body by being guided by the guide needle 5.

[0035] Guide pin 5 and pin holder 4 can be mounted in a snap-fit ​​configuration.

[0036] The working process of this embodiment is divided into the ejection implantation stage and the reset stage.

[0037] During the ejection implantation stage, please refer to the appendix. Figures 24-27 , attached Figure 24 and Figure 25 These are all cross-sectional structural diagrams of the assembled needle assist device and sensor assembly, with attached... Figure 26 yes Figure 26 The enlarged view at point A is also a cross-sectional view of the guide pin and pin holder assembly. (Attached) Figure 27 This is another cross-sectional structural diagram showing the assembly of the needle assist device and sensor assembly, and the mounting of the guide needle and needle holder. The needle assist device 01 and sensor assembly 02 are assembled, and the guide needle 5 and needle holder 4 are mounted. Please refer to the attached document. Figures 36-38 , attached Figure 36 This is a schematic diagram of the needle assist device and sensor assembly after the user presses the ejection trigger button. Figure 37 and Figure 38 These are cross-sectional structural diagrams of the needle aid and sensor assembly after the user presses the ejection trigger button. When the user presses the ejection trigger button 2, the ejection trigger button 2 triggers the ejection implantation mechanism 3 to move down to the lower limit position. The needle seat 4 moves down to the lower limit position under the action of the ejection implantation mechanism 3 to complete the implantation of the bio-information monitor body 14. Please refer to the attached document. Figures 39-41 , attached Figure 39 This is a schematic diagram of the structure by which the needle hub drives the guide needle to complete the retraction. (Attached) Figure 40 and attached Figure 41 These are cross-sectional structural diagrams showing how the needle seat drives the guide needle to complete the retraction. The retraction of the needle seat 4 completes the withdrawal of the guide needle 5.

[0038] During the reset phase, please refer to the appendix. Figures 42-55 Push the ejection implantation mechanism 3 upward to reset the ejection implantation mechanism 3, needle seat 4 and ejection trigger key 2. The guide needle 5 can be removed by removing the sensor assembly 02 from the bio-information monitor body 14. The sensor assembly 02 can be removed from the needle aid 01. The next implantation can be performed by assembling a new sensor assembly 02.

[0039] With the detachable design of the needle aid 01 and the sensor assembly 02, the core components of the needle aid 01, such as the upper shell 1, the ejection trigger key 2, and the ejection implantation mechanism 3, can be reused multiple times, realizing the reusability of the needle aid 01. Each implantation only requires the replacement of the sensor assembly 02, or the replacement of disposable consumable parts such as the guide needle 5 and the bio-information monitor body 14 in the sensor assembly 02, excluding the lower shell 10, which effectively reduces the cost of use and reduces medical waste.

[0040] Example 2 Based on Embodiment 1, this embodiment further describes the mounting structure between the guide needle 5 and the needle base 4, the detachable structure between the guide needle 5 and the bio-information monitor body 14, and the connection structure between the guide needle 5 and the sealing protective cover 101.

[0041] See appendix Figures 5-7 The upper end of the guide pin 5 is provided with a flat buckle 51. The flat buckle 51 is a flat protruding structure that extends radially outward from the upper end of the guide pin 5. The cross-section of the flat buckle 51 is a non-circular flat shape, such as rectangular, elliptical or racetrack-shaped.

[0042] The latch 41 locks and unlocks via the flat latch 51. Please refer to the appendix. Figure 9 and attached Figure 10 Specifically, the lower part of the needle holder 4 is provided with two opposing claws 41, each claw 41 having at least one engaging protrusion 45 inwardly, the two engaging protrusions 45 being opposite to each other, and a snap-fit ​​groove 46 being formed between the two engaging protrusions 45, the width of the snap-fit ​​groove 46 being adapted to the long axis dimension of the flat snap-fit ​​51.

[0043] For pre-implantation assembly, please refer to the appendix. Figure 11 Push the guide pin 5 under the needle seat 4, aligning the long axis of the flat snap fastener 51 with the long axis of the snap fastener groove 46. The flat snap fastener 51 passes through the snap fastener groove 46. Then rotate the guide pin 5 relative to the needle seat 4. Please refer to the attached diagram. Figure 12The flat buckle 51 rotates and is misaligned with the buckle slot 46. The flat buckle 51 is located above the snap-fit ​​protrusion 45. The snap-fit ​​protrusion 45 blocks the axial disengagement of the flat buckle 51 from below, thereby locking the guide pin 5 into the needle seat 4.

[0044] When removal is required after implantation, rotate the guide needle 5 relative to the needle hub 4. Please refer to the attached document. Figure 11 The flat buckle 51 is released from the restraint of the locking protrusion 45 and aligned with the buckle groove 46. The flat buckle 51 is then pulled out of the buckle groove 46, allowing the guide needle 5 to disengage from the needle seat 4. Through the rotational locking and unlocking engagement of the flat buckle 51 and the claw 41, the connection between the guide needle 5 and the needle seat 4 is both secure and easy to disassemble and assemble, providing a structural basis for the reusability of the needle aid device 01 and the replacement of consumables.

[0045] In other alternative implementations, the detachable engagement between the claw 41 and the guide pin 5 can also be achieved through the engagement of the elastic buckle and the slot, magnetic connection, or threaded connection.

[0046] Please refer to the attached document. Figure 7 The upper end of the guide pin 5 is also provided with two opposing locking protrusions 55. Please refer to the attached document. Figure 9 The lower part of the needle holder 4 is provided with two opposing anti-rotation slots 44, and the locking protrusion 55 can be screwed into and out of the anti-rotation slots 44. The cooperation between the locking protrusion 55 and the anti-rotation slots 44 is used to restrict the rotation of the guide needle 5 relative to the needle holder 4 during specific operation stages. Through the cooperation between the locking protrusion 55 and the anti-rotation slots 44, the rotational freedom of the guide needle 5 is constrained at different operation stages.

[0047] Please refer to the attached document. Figure 6 The upper end of the guide needle 5 is provided with a needle head 52. The upper part of the needle head 52 is provided with a locking protrusion 55 and a flat buckle 51. The lower part of the needle head 52 is provided with an upper locking buckle 53. The bio-information monitor body 14 is provided with a guide needle through hole 141. The upper locking buckle 53 can lock the guide needle through hole 141.

[0048] During implantation, the upper locking buckle 53 engages with the guide needle through-hole 141, and the bio-information monitor body 14 moves downward with the guide needle 5 to adhere to the human skin. When the guide needle 5 moves to its lower limit position, it retracts. The adhesion force between the bio-information monitor body 14 and the skin is greater than the locking force between the upper locking buckle 53 and the guide needle through-hole 141. The upper locking buckle 53 disengages from the guide needle through-hole 141 and moves upward, leaving the bio-information monitor body 14 on the human skin. By designing that the locking force between the upper locking buckle 53 and the guide needle through-hole 141 is less than the adhesion force between the bio-information monitor body 14 and the skin, synchronous separation of the bio-information monitor body 14 and the guide needle 5 is achieved during needle withdrawal, ensuring that the sensor's sensing electrode remains subcutaneously.

[0049] The guide needle 5 has a lower locking buckle 54 at the lower part of the needle tip 52. The sensor assembly 02 is provided with a sealing protective cover 101. The upper part of the sealing protective cover 101 is provided with a guide groove 102, and the lower locking buckle 54 can engage with the guide groove 102. The sealing protective cover 101 is used to cover the sealing needle tip 52 and the bio-information monitor body 14 before the implantation operation, which serves to provide sterile protection and prevent accidental contact with the needle tip. The bio-information monitor body 14 can be locked between the needle tip 52 and the sealing protective cover 101, that is, the bio-information monitor body 14 is clamped between the upper locking buckle 53 and the upper end of the sealing protective cover 101 to achieve a stable pre-assembly.

[0050] Please refer to the attached document. Figure 22 and attached Figure 23 The guide groove 102 is a spiral or L-shaped groove located on the upper part of the sealing cover 101. The lower locking buckle 54 can be screwed into or out of the guide groove 102 by rotation. Through the rotational locking design of the lower locking buckle 54 and the guide groove 102, a reliable connection and convenient separation between the sealing cover 101 and the guide pin 5 are achieved. In other alternative embodiments, the upper inner side of the sealing cover 101 is provided with two adjacent guide slots 102. Each guide slot 102 includes a ramp section 1021 that rotates downward along the upper top wall, a flat buffer section 1022, and an inwardly extending block limiting section 1023. The block limiting section 1023 of the latter guide slot 102 is adjacent to the downward rotating ramp section 1021 of the former guide slot 102. The lower part of the needle tip 52 of the guide needle 5 is provided with two opposing lower locking buckles 54, which are screwed into the two guide slots 102 respectively.

[0051] The downward spiral ramp section 1021 is an inclined guide surface, and the lower locking buckle 54 can be rotated into the circumference of the downward spiral ramp section 1021; the planar buffer section 1022 is the transition and contact surface between the downward spiral ramp section 1021 and the locking block limiting section 1023; the locking block limiting section 1023 is a stop structure protruding from the end of the planar buffer section 1022, and a guide ramp is provided on the side facing the planar buffer section 1022, and the lower locking buckle 54 can slide into the guide ramp. The end face of the lower locking buckle 54 abuts against the end face of the locking block limiting section 1023, restricting the circumferential displacement of the lower locking buckle 54.

[0052] The sensor assembly 02 is also provided with a lower housing 10 and a protective cover mounting base 15, which are detachably mounted to the lower housing 10.

[0053] Please refer to the attached document. Figure 20 , attached Figure 20 This is a schematic diagram of the protective cover mounting base. A mounting sleeve 152 is formed inside the protective cover mounting base 15, and the sealing protective cover 101 is installed inside the mounting sleeve 152; please refer to the attached diagram. Figure 22 , attached Figure 22 The diagram shows the structure of the sealing protective cover. The sealing protective cover 101 has two opposing guide blocks 1011 on its periphery. The inner wall of the mounting sleeve 152 has a block groove 1521 adapted to the guide blocks 1011, allowing the guide blocks 1011 to slide up and down within the block groove 1521. A push spring 153 is also provided at the bottom of the mounting sleeve 152. One end of the push spring 153 abuts against the bottom of the mounting sleeve 152, and the other end abuts against the bottom of the sealing protective cover 101. The push spring 153 provides axial elastic restoring force to the sealing protective cover, pushing it upwards. The guide blocks 1011 of the sealing protective cover 101 engage with the upper part of the block groove 1521, ensuring that the guide groove 102 of the sealing protective cover 101 always abuts against the lower snap fastener 54, and that the upper end of the sealing protective cover 101 is always tightly fitted with the bio-information monitor body 14.

[0054] Please refer to the attached document. Figure 18 , attached Figure 18 The diagram shows the structure of the lower housing 10. The lower housing 10 has a snap-fit ​​cavity 103, into which the protective cover mounting base 15 can be snapped. The outer side of the protective cover mounting base 15 has two opposing elastic snap-fit ​​arms 151 (as shown in the attached diagram). Figure 21 As shown in the figure, the inner wall of the snap-fit ​​cavity 103 of the lower housing 10 is provided with a corresponding snap-fit ​​arm groove 104. Two elastic snap-fit ​​arms 151 are pushed in from both sides, and the elastic snap-fit ​​arms 151 are snapped into the snap-fit ​​arm groove 104, so that the protective cover mounting base 15 snaps into the lower housing 10 (as shown in the figure). Figure 2 (As shown). By squeezing and pulling the two elastic locking arms 151 from both sides, the elastic locking arms 151 disengage from the locking arm slots 104, allowing the protective cover mounting base 15 to be pulled out of the lower housing 10. The sealing protective cover 101 is installed on the protective cover mounting base 15 and indirectly fixed inside the lower housing 10 through the protective cover mounting base 15. The lower housing 10 is threadedly connected to the upper housing 1. Through the cooperation of the elastic locking arms 151 and the locking arm slots 104, the installation and removal of the protective cover mounting base 15 is simple and reliable, allowing for quick assembly and disassembly without additional tools.

[0055] The protective cover mounting base 15 has guide protrusions 154 on both sides of the elastic locking arm 151. Please refer to the attached document for details. Figure 19 The locking cavity 103 has locking arm slots 104 on both sides with locking protrusions and slots 105 respectively. The guide locking protrusion 154 can slide up and down in the locking protrusion and slot 105. When the elastic locking arm 151 is locked into the locking arm slot 104, the guide locking protrusion 154 is also locked into the locking protrusion and slot 105, making assembly more convenient.

[0056] Example 3

[0057] Based on Embodiment 1 and Embodiment 2, this embodiment further discloses the specific implementation structure of automatic retraction of the needle holder 4.

[0058] Please refer to the attached document. Figure 13 The ejection implantation mechanism 3 includes a resettable launcher 7, which is a cylindrical structure and can slide up and down within the upper housing 1. The needle seat 4 is disposed inside the launcher 7 and can slide up and down relative to the launcher 7 within a limited range. A guide structure can be provided between the launcher 7 and the needle seat 4 to ensure the linearity of the sliding.

[0059] Please refer to the attached document. Figure 8 The needle holder 4 has upper elastic locking arms 40 on both sides. Each upper elastic locking arm 40 has two locking ears 43 on its outer side. The locking ears 43 are lug structures that protrude outward from the side of the needle holder 4. The upper elastic locking arms 40 and locking ears 43 have radial elastic deformation capability, that is, the upper elastic locking arms 40 can move inward when subjected to external force, driving the locking ears 43 to move inward, and spring back to reset after the external force is removed.

[0060] The needle hub 4 is connected to the top inner wall of the launcher 7 via a first return spring 6 on both sides. The first return spring 6 is preferably a tension spring; its upper end is fixedly connected to the top inner wall of the launcher 7, and its lower end is fixedly connected to the side or top of the needle hub 4. In the initial state before ejection implantation, the first return spring 6 is in a pre-stretched state and stores elastic potential energy. For details, please refer to the appendix. Figure 10 The needle holder 4 has two opposing first snap-fit ​​protrusions 47 on both sides. The top of the launcher 7 is equipped with a spring mounting seat 75. The two sides of the spring mounting seat 75 are respectively equipped with second snap-fit ​​protrusions 751. The two ends of the first return spring 6 snap-fit ​​the first snap-fit ​​protrusions 47 and the second snap-fit ​​protrusions 751, so that the two sides of the needle holder 4 are connected to the top inner wall of the launcher 7 through the first return spring 6.

[0061] The needle holder 4 has a pressure contact 42 on the outer side of the upper elastic retaining arm 40. Each upper elastic retaining arm 40 has a pressure contact 42 on its outer side. The pressure contact 42 is a columnar or plate-shaped protrusion extending outward from the side of the needle holder 4. Locking ears 43 are located on both sides of the pressure contact 42. The pressure contact 42 and the locking ears 43 are linked together. When the pressure contact 42 is pushed radially inward, it drives the upper elastic retaining arm 40 to move inward, and the upper elastic retaining arm 40 drives the locking ears 43 to move inward synchronously. This linked engagement can be achieved by connecting the pressure contact 42 and the locking ears 43 to the same upper elastic retaining arm 40, or by a transmission structure such as a wedge-shaped surface. The width of the guide groove 72 is designed so that the pressure contact 42 can slide through the guide groove 72 while the locking ears 43 cannot pass through in the outward protruding state.

[0062] Please refer to the attached document. Figure 13The launch pad 7 has two opposing limiting grooves 71 on its two side walls. Each limiting groove 71 is an elongated groove extending vertically. Each limiting groove 71 contains two limiting blocks 711, which are protruding structures extending from the groove wall into the groove, dividing the limiting groove 71 into upper and lower parts. Please refer to the appendix. Figure 16 The locking lug 43 extends into the corresponding limiting groove 71 and slides up and down controllably. Each limiting groove 71 is provided with two limiting blocks 711, which are arranged at intervals along the width direction of the limiting groove 71. A guide groove 72 is formed between the two limiting blocks 711, and the guide groove 72 is connected to the upper and lower spaces of the limiting groove 71.

[0063] Please refer to the attached document. Figure 14 , attached Figure 14 The diagram shows the structure of the fixed base. The needle aid 01 also includes a fixed base 11, which is fixed inside the upper housing 1. The fixed base 11 does not move up and down during operation. The fixed base 11 serves as a guide and limiting reference for the up and down sliding of the launcher 7. The fixed base 11 can be fixed to the inner wall of the upper housing 1 by snap-fit ​​connection, screw connection or interference fit. The fixed base 11 can also be integrally formed with the upper housing 1.

[0064] Please refer to the attached document. Figure 17 The launcher 7 is slidably mounted inside the fixed base 11, and the inner wall of the fixed base 11 provides guidance for the launcher 7. Pressing protrusions 114 are provided on both sides of the fixed base 11. The pressing protrusions 114 are protrusions extending inward from the inner wall of the fixed base 11. The pressing protrusions 114 are located in the lower region of the fixed base 11, and their surfaces are provided with guide slopes that gradually incline inward from top to bottom.

[0065] In the initial state before implantation, the locking ear 43 is located in the lower space below the limiting block 711 of the limiting groove 71, and the pressure contact 42 passes through the guide groove 72 and is also located in the lower space. The limiting block 711 restricts the upward movement of the protruding locking ear 43. During the ejection implantation process, please refer to the appendix. Figure 36 To be continued Figure 38 The needle holder 4 moves downward synchronously with the launcher 7, and the launcher 7 slides downward relative to the fixed base 11. When the needle holder 4 reaches the lower limit position, please refer to the attached diagram. Figure 39 To be continued Figure 41The pressure protrusion 114 pushes the pressure contact 42 inward along the guide slope. The pressure contact 42 causes the locking ear 43 to retract inward, disengaging from the restraint of the limiting block 711. The first reset spring 6 releases its elastic potential energy, driving the needle seat 4 to retract upward. The locking ear 43 moves upward with the needle seat 4, passing through the guide groove 72 and entering the upper space of the limiting groove 71, then returns to its convex state. The pressure contact 42 moves upward with the needle seat 4, passing through the guide groove 72 and also entering the upper space of the limiting groove 71, then returns to its convex state. The needle seat 4 completes its retraction. A limiting protrusion 011 is provided at the top inside the upper housing 1. The limiting protrusion 011 passes through the upper end of the launcher 7 and is fixed to the upper housing 1. When the needle seat 4 moves upward to the upper limit position, it abuts against the lower end of the limiting protrusion 011. The limiting protrusion 011 limits the retraction of the needle seat 4 to the upper limit position, completing the retraction of the needle seat 4 to the upper limit position.

[0066] By cooperating with the elastic energy storage of the first return spring 6 and the controlled release of the locking lug 43, the needle holder 4 is automatically triggered to retract the instant it reaches the lower limit position, ensuring timely needle removal. Through the corresponding engagement of the pressure protrusion 114 and the pressure contact 42, the needle removal timing is determined by the structural positional relationship, eliminating the need for an additional triggering mechanism and further improving retraction reliability and reset smoothness. The upper limit position of the needle holder 4 is limited by the limiting protrusion 011, ensuring the accuracy and consistency of the needle holder 4's retraction stroke.

[0067] Example 4 Based on Embodiment 3, this embodiment further discloses the specific structure of the ejection drive structure between the launcher 7 and the fixed base 11, as well as the specific structure of the ejection trigger key 2.

[0068] See appendix Figure 13 The launch base 7 has two upper sides with extending locking arms 74. Each extending locking arm 74 is a cantilever structure extending upwards from the upper part of the launch base 7 and has radial elasticity. Each extending locking arm 74 has a locking connector 741 at its top, which is an outwardly protruding structure. The lower end of the launch base 7 has a lower annular flange 73, which is an annular flange extending radially outwards from the outer wall of the lower end of the launch base 7.

[0069] Please refer to the attached document. Figure 15 The fixing base 11 is provided with an upper annular flange 111, an upper retaining groove 112, and a lower retaining groove 113. The upper annular flange 111 is an annular flange extending radially inward from the inner wall of the fixing base 11 and is located in the upper region of the fixing base 11. The upper retaining groove 112 is formed on the inner wall of the fixing base 11, and the position of the upper retaining groove 112 corresponds to the position of the retaining connector 741 of the extended retaining arm 74. The lower retaining groove 113 is a groove-shaped structure extending in the vertical direction. The lower retaining groove 113 is located below the upper retaining groove 112, and the retaining connector 741 can slide controllably in the vertical direction within the lower retaining groove 113.

[0070] Please refer to the attached document. Figure 24 A compression spring 8 is provided between the upper annular stop 111 and the lower annular stop 73. The compression spring 8 is a helical compression spring. The compression spring 8 is sleeved outside the launch base 7 or set in the annular space between the launch base 7 and the fixed base 11. The upper end of the compression spring 8 abuts against the lower surface of the upper annular stop 111, and the lower end of the compression spring 8 abuts against the upper surface of the lower annular stop 73.

[0071] Please refer to the attached document. Figure 25 The ejection trigger key 2 is connected to the outside of the upper housing 1 via a second return spring 9. The second return spring 9 is a compression spring, located between the ejection trigger key 2 and the outer wall of the upper housing 1. One end of the second return spring 9 abuts against the inner surface of the ejection trigger key 2, and the other end abuts against the outer wall surface of the upper housing 1 or the bottom surface of the mounting groove. In other alternative embodiments, the second return spring 9 may also be a tension spring or a torsion spring. The ejection trigger key 2 is provided with a pressure protrusion 21, which is a columnar protrusion extending inward from the inner surface of the ejection trigger key 2. The pressure protrusion 21 can pass through the through hole in the side wall of the upper housing 1 and be inserted into the interior of the upper housing 1. The inner end of the pressure protrusion 21 is provided with a bevel to generate a radial force when in contact with the snap-fit ​​connector 741.

[0072] In the initial state before ejection, the locking connector 741 is engaged with the upper locking slot 112, and the launcher 7 is locked in the upper position within the fixed base 11. The compression spring 8 is in a compressed state, storing elastic potential energy. The ejection trigger button 2 remains in the unpressed protruding position under the elastic force of the second reset spring 9, and the pressure protrusion 21 does not contact the locking connector 741.

[0073] When launching the ejection, please refer to the attached document. Figures 33-35 When the user presses the ejection trigger button 2, the ejection trigger button 2 moves inward against the elastic force of the second return spring 9, and the second return spring 9 is compressed and produces elastic deformation; the pressure protrusion 21 is pushed into the interior of the upper housing 1, and the inner end of the pressure protrusion 21 contacts the locking connector 741, pushing the locking connector 741 inward and disengaging it from the upper locking groove 112. The compression spring 8 releases elastic potential energy, pushing the launcher 7 to move rapidly downward relative to the fixed seat 11. The locking connector 741 slides along the inner wall of the fixed seat 11 into the lower locking groove 113 and moves down to the lower part of the lower locking groove 113, and the launcher 7 reaches the lower limit position; when the user releases the ejection trigger button 2, the ejection trigger button 2 automatically resets under the action of the second return spring 9, and the pressure protrusion 21 retracts to the initial position.

[0074] The pre-compression and energy storage of the compression spring 8, along with the locking mechanism of the locking connector 741 and the upper locking slot 112, ensures consistency in ejection speed and force. The lower locking slot 113 limits the lower limit position of the launch base 7, providing a clear starting state for the reset operation. The second reset spring 9 enables the ejection trigger key 2 to automatically reset, simplifying the overall reset process.

[0075] Example 5 Based on embodiments one to four, this embodiment discloses a first reset method that achieves separation of the sealing protective cover 101 and unlocking of the guide pin 5 by rotating the lower housing 10, and pushes the ejection implantation mechanism 3 to reset.

[0076] The lower housing 10 is threadedly connected to the upper housing 1. When the lower housing 10 rotates relative to the upper housing 1, it moves upward or downward along the axial direction.

[0077] Before implantation, after assembling the sensor assembly 02 on the lower housing 10, the sealing protective cover 101 must be detached from the guide needle 5 to expose the needle tip 52. Specific procedures are as follows: Please refer to the appendix. Figures 28-31 The lower housing 10 is rotated in the opposite direction to the upper housing 1, and the locking protrusion 55 at the upper end of the guide pin 5 is screwed into the anti-rotation locking groove 44 at the lower part of the needle seat 4 (as shown in the attached figure). Figure 32 As shown), the locking protrusion 55 is constrained by the anti-rotation groove 44, preventing the guide pin 5 from rotating relative to the needle seat 4. The flat buckle 51 rotates and misaligns with the buckle groove 46. The flat buckle 51 is positioned above the locking protrusion 45, and the locking protrusion 45 blocks the axial disengagement of the flat buckle 51 from below, thus locking the guide pin 5 into the needle seat 4 (as shown). Figures 29 to 31 (As shown); the lower housing 10 continues to rotate in the reverse direction, and the sealing protective cover 101 rotates with the lower housing 10 relative to the guide needle 5. The lower locking buckle 54 is screwed out of the guide slot 102, the sealing protective cover 101 is separated from the guide needle 5, and the lower part of the guide needle 5 is exposed for implantation. The lower housing 10 and the upper housing 1 separate. During this process, the lower housing 10 moves downward relative to the upper housing 1 through the threaded drive, further exposing the guide needle 5.

[0078] After the ejection implantation is completed, please refer to the attached document. Figure 39 To be continued Figure 41 The launcher 7 is in the lower limit position, the locking connector 741 is located at the lower part of the lower locking groove 113, the needle seat 4 has been retracted, the locking ear 43 is located at the upper part of the limiting groove 71, and the ejection trigger key 2 has automatically reset under the action of the second reset spring 9. At this time, perform a complete machine reset operation: please refer to the appendix. Figures 42 to 51 The lower housing 10 rotates relative to the upper housing 1, and the lower housing 10 moves upward relative to the upper housing 1 via a threaded drive. The upper end of the lower housing 10 pushes the launcher 7 to move upward along the fixed base 11, and the compression spring 8 is compressed again to store energy; please refer to the appendix. Figure 52 To be continued Figure 55 As the launcher 7 continues to move upward, the locking connector 741 slides upward from the lower locking slot 113 and re-locks into the upper locking slot 112, completing the reset of the launcher 7; During the upward movement of the launcher 7, it moves upward relative to the needle seat 4, which is equivalent to the locking ear 43 moving downward relative to the limiting groove 71. The locking ear 43 moves downward across the guide groove 72 through elastic deformation, and slides from the side of the limiting block 711 into the lower space of the limiting groove 71. The pressure contact 42 slides into the guide groove 72, completing the reset of the needle seat 4.

[0079] During the forward rotation of the lower housing 10, the lower locking buckle 54 screws into the guide groove 102, and the sealing protective cover 101 re-engages with the guide needle 5. The sealing protective cover 101 drives the guide needle 5 to rotate, and the locking protrusion 55 screws out of the anti-rotation groove 44. The rotation of the guide needle 5 causes the flat buckle 51 to rotate relative to the claw 41. When the flat buckle 51 is aligned with the buckle groove 46, the locking relationship between the flat buckle 51 and the claw 41 is released. The protective cover mounting base 15 is pulled out from the lower housing 10, and the guide needle 5 disengages from the needle seat 4 along with the sealing protective cover 101. The new sensor assembly 02 is assembled, and the flat buckle 51 of the new guide needle 5 is inserted into the buckle groove 46 to complete the reset of the needle aid 01.

[0080] Through the threaded transmission between the lower housing 10 and the upper housing 1, the rotational action simultaneously resets the launcher 7, the needle seat 4, and unlocks the guide pin 5, making operation simple and highly stable. The engagement of the locking protrusion 55 and the anti-rotation slot 44 restricts the rotation of the guide pin 5 during the reverse rotation phase, allowing the sealing cover 101 to separate smoothly. During the forward rotation phase, the sealing cover 101 drives the guide pin 5 to rotate, unlocking the pin. This achieves automatic switching of the guide pin 5 rotation constraint state at different stages.

[0081] Example 6 This embodiment, based on embodiments one through four, provides a second reset method different from embodiment five. Reset is achieved by manually pushing the transmitter base 7 upwards and rotating the guide pin 5 with a wrench. This embodiment and embodiment five are two parallel reset implementation methods; in actual product design, one can be selected according to requirements, or both methods can be supported simultaneously in the same product.

[0082] After the ejection is completed, the launcher 7 is in the lower limit position, the locking connector 741 is in the lower part of the lower locking groove 113, the needle seat 4 has been retracted, the locking ear 43 is in the upper part of the limiting groove 71, and the ejection trigger key 2 has been automatically reset under the action of the second reset spring 9.

[0083] The user pushes the launcher 7 upwards by hand. The lower end of the upper housing 1 is an open structure or has an operating opening to allow fingers to touch the bottom surface of the launcher 7. As the user pushes the launcher 7 upwards, it moves upwards along the fixed base 11, and the compression spring 8 is compressed again to store energy. The launcher 7 continues to move upwards, and the locking connector 741 slides upwards from the lower locking groove 113 and re-locks into the upper locking groove 112, completing the reset of the launcher 7.

[0084] During the upward movement of the launcher 7, it moves upward relative to the needle seat 4, which is equivalent to the locking ear 43 moving downward relative to the limiting groove 71. The locking ear 43 moves downward across the guide groove 72 through elastic deformation, and slides from the side of the limiting block 711 into the lower space of the limiting groove 71. The pressure contact 42 slides into the guide groove 72, completing the upward movement of the needle seat 4 to the predetermined position of the needle seat 4.

[0085] Subsequently, the user uses a wrench to hold the lower end of the guide needle 5 and rotates it relative to the needle holder 4 so that the flat buckle 51 aligns with the buckle slot 46, releasing the locking relationship between the flat buckle 51 and the claw 41. The user removes the used guide needle 5 from the needle holder 4, assembles a new guide needle 5 and a new bio-information monitor body 14 onto the claw 41 of the needle holder 4, inserts the flat buckle 51 of the new guide needle 5 into the buckle slot 46, completes the reset of the needle holder 4, and the needle assist device 01 can then perform the next implantation.

[0086] The manual reset method of this embodiment does not require the threaded drive structure of the lower housing 10, and is applicable to the operation of the scheme without the lower housing 10 or the state where the lower housing 10 has been removed. It provides users with a flexible alternative reset scheme and increases the adaptability of the needle aid 01 in different usage scenarios.

[0087] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A needle aid for an implantable bio-information sensor, characterized in that, include: Upper housing (1), lower housing (10), ejection trigger key (2) and ejection implantation mechanism (3); The lower housing (10) and the upper housing (1) are threaded together; The ejection implantation mechanism (3) is provided with a resettable needle seat (4) and a resettable launcher (7) inside. The needle seat (4) is provided with a claw (41) for detachably engaging the guide needle (5). The launcher (7) can slide up and down inside the upper housing (1). The ejection implantation mechanism (3) is slidably disposed inside the upper housing (1); When the ejection is initiated, press the ejection trigger key (2), the ejection implantation mechanism (3) moves down to the lower limit position, and at the same time the needle seat (4) moves down to the lower limit position and then retracts. The needle seat (4) moves down to the lower limit position to complete the implantation of the bio-information sensor, and the needle seat (4) retracts to complete the withdrawal of the guide needle (5). Push the ejection implantation mechanism (3) upward, the launcher (7) is pushed upward, the needle seat (4) moves downward relative to the launcher (7), the guide needle (5) is rotated and removed, a new guide needle (5) and bio-information sensor are assembled, and the ejection implantation mechanism (3), launcher (7), needle seat (4), guide needle (5) and ejection trigger key (2) are reset. The lower housing (10) is provided with a sealing protective cover (101). The upper end of the guide pin (5) is provided with two opposing locking protrusions (55). The lower part of the needle seat (4) is provided with two opposing anti-rotation locking grooves (44). The locking protrusions (55) can be screwed into and out of the anti-rotation locking grooves (44). Through the cooperation of the locking protrusions (55) and the anti-rotation locking grooves (44), the guide pin (5) is restricted from rotating during the reverse rotation phase, causing the sealing protective cover (101) to separate. During the forward rotation phase, the guide pin (5) is driven to rotate by the sealing protective cover (101) to unlock. Through the threaded transmission between the lower housing (10) and the upper housing (1), the rotational action simultaneously completes the reset of the launcher (7), the reset of the needle seat (4), and the unlocking of the guide needle (5).

2. The needle-aid device as described in claim 1, characterized in that, After the needle seat (4) moves down to the lower limit position, it retracts as follows: the needle seat (4) is provided with locking ears (43) on both sides, and the needle seat (4) is connected to the top of the ejection implantation mechanism (3) by the first return spring (6) on both sides; When the needle seat (4) moves down to the lower limit position along with the ejection implantation mechanism (3), the locking ear (43) is pushed open, and the needle seat (4) retracts under the action of the first reset spring (6).

3. The needle-aid device as described in claim 2, characterized in that, The launcher (7) is provided with limiting grooves (71) on both sides, and a limiting block (711) is provided in the limiting groove (71). The limiting block (711) divides the limiting groove (71) into upper and lower parts, and the snap-fit ​​ear (43) slides up and down controllably in the limiting groove (71). Before implantation, the locking ear (43) is located below the limiting block (711) of the limiting groove (71). When the needle seat (4) moves down to the lower limit position, the locking ear (43) is pushed away from the restraint of the limiting block (711). Under the action of the first reset spring (6), the locking ear (43) moves up to the upper part of the limiting groove (71), completing the retraction of the needle seat.

4. The needle-aiding device as described in claim 3, characterized in that, It also includes a fixing seat (11), which is fixed inside the upper housing (1); The launcher (7) can be slidably disposed within the fixed base (11); The fixing base (11) is provided with pressure protrusions (114) on both sides. The needle seat (4) is provided with pressure contacts (42) on both sides, and the locking ears (43) are provided on both sides of the pressure contacts (42); When the needle seat (4) moves down to the lower limit position, the pressure protrusion (114) pushes the pressure contact (42) inward, and the pressure contact (42) causes the locking ear (43) to disengage from the restraint of the limiting block (711).

5. The needle-aid device as described in claim 4, characterized in that, Each of the limiting grooves (71) is provided with two limiting blocks (711), and the two limiting blocks (711) form a guide groove (72), which is connected to the limiting groove (71); The pressure contact (42) can slide through the guide groove (72), while the snap-fit ​​ear (43) cannot pass through the guide groove (72).

6. The needle-aiding device as described in claim 5, characterized in that, The ejection implantation mechanism (3) is slidably disposed inside the upper housing (1) as follows: the upper two sides of the launch base (7) are provided with an upward extending locking arm (74), and the lower end of the launch base (7) is provided with a lower annular stop (73). The fixing base (11) is provided with an upper annular stop (111) and an upper slot (112); The snap connector (741) of the extended snap arm (74) is used to snap into the upper snap slot (112). A compression spring (8) is provided between the upper annular stop (111) and the lower annular stop (73). Pressing the ejection trigger key (2), the locking connector (741) is released from the restraint of the upper locking slot (112). Under the action of the elastic potential energy of the compression spring (8), the launcher (7) is pushed to move downward relative to the fixed seat (11), thus completing the downward movement of the launcher (7).

7. The needle-aid device as described in claim 6, characterized in that, The fixed base (11) is provided with a lower locking groove (113), and the locking connector (741) can slide up and down controllably within the lower locking groove (113); The locking connector (741) disengages from the upper locking groove (112) and, under the elastic potential energy of the compression spring (8), moves down to the lower part of the lower locking groove (113), completing the downward movement of the launcher (7).

8. The needle-aid device as described in claim 7, characterized in that, The ejection trigger key (2) is connected to the outside of the upper housing (1) via a second reset spring (9). The ejection trigger key (2) is provided with a pressure protrusion (21), which can be inserted into the interior of the upper housing (1). Pressing the ejection trigger key (2) pushes the pressure protrusion (21) into the upper housing (1), pushing the snap connector (741) away from the upper snap slot (112), and the second reset spring (9) is compressed to produce elastic deformation; When the ejection trigger key (2) is released, the ejection trigger key (2) is reset under the action of the elastic potential energy of the second reset spring (9), which drives the pressure protrusion (21) to reset.

9. The needle-aid device as described in claim 8, characterized in that, The claw (41) is used to detachably engage the guide pin (5) as follows: The claw (41) is locked and unlocked by the flat buckle (51) at the upper end of the guide pin (5).

10. The needle-aiding device as described in claim 9, characterized in that, Pushing the ejection implantation mechanism (3) upwards is as follows: The lower housing (10) rotates in the forward direction relative to the upper housing (1). The lower housing (10) pushes the launcher (7) upward. The compression spring is compressed and deformed. The snap-fit ​​connector (741) disengages from the lower snap-fit ​​groove (113) and moves upward into the upper snap-fit ​​groove (112), thus completing the reset of the launcher (7). When the launcher (7) moves upward, the needle seat (4) remains stationary. The needle seat (4) moves downward relative to the launcher (7), the snap-fit ​​ear (43) moves downward and snaps into the lower part of the limiting groove (71), and the pressure contact (42) slides into the guide groove (72), thus completing the downward movement of the needle seat (4). The sealing protective cover (101) is engaged with the guide needle (5). The flat buckle (51) of the guide needle (5) is unlocked by the claw (41) as the sealing protective cover (101) rotates. The guide needle (5) and the sealing protective cover (101) are removed, and a new guide needle (5) and bio-information sensor are assembled to complete the reset of the needle seat (4).

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