Micro biosensor implantation device

Abstract

The utility model provides a miniature biosensor implanting device, which belongs to the technical field of medical implanting instruments and is characterized in that quick and stable implanting and immediate needle withdrawing are realized through a dual-drive collaborative mechanism and a plurality of guide structure designs, a first driving unit pushes a pushing part to move along an implanting direction, and a second driving unit pushes a second driving unit to move along the implanting direction. A guide rail is matched with a guide groove to reduce vibration in the implanting process, a second driving unit drives a reset piece to reversely withdraw a needle, a containing cavity is designed in a stepped mode, a first elastic arm expands outwards at the abrupt change position of the cross section of the containing cavity, the reset piece is triggered to be automatically released to withdraw the needle, a guide groove is formed in a pushing piece, and the reset piece is in sliding fit with the guide groove. The problems that a traditional implantable sensor is long in needle withdrawing time and unstable during implantation are solved, the pain and bleeding risk of a patient are remarkably reduced, and the sensor is suitable for the patient needing to monitor the analyte level for a long time.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a miniature biosensor implantation device. Background Technology

[0002] Monitoring changes in the levels of various analytes in the human body is crucial for assessing health status, as abnormal analyte levels often reflect potential metabolic abnormalities or disease risks. While traditional in vitro testing methods, which rely on periodic collection of blood and other bodily fluid samples, can meet routine monitoring needs, this intermittent testing has significant limitations. On the one hand, insufficient testing frequency may lead to missed changes in important indicators, delaying treatment and potentially causing irreversible damage. On the other hand, individuals with drastic fluctuations in analyte levels require frequent blood tests, which can be inconvenient and painful for patients.

[0003] Therefore, compared to traditional blood collection methods, implantable detection devices reduce the number of needle pricks by implanting sensors for detecting analytes into the patient's skin and using adhesive patches to prevent the sensors from falling out. However, existing implantable devices generate a certain degree of vibration during the implantation of the analyte monitoring sensors, leading to instability in the implanted structure. This, in turn, increases bleeding and pain for the patient, which not only increases patient suffering but also affects the accurate implantation of the sensors and their subsequent functional performance. Utility Model Content

[0004] The purpose of this invention is to provide a miniature biosensor implantation device that can achieve stable and rapid implantation, and can also achieve rapid needle withdrawal while ensuring the implantation depth, thereby reducing patient pain.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A miniature biosensor implantation device, comprising:

[0007] The fixing seat includes a receiving cavity extending along a first direction;

[0008] A first driving unit, disposed within the accommodating cavity, includes a pushing member capable of moving relative to the fixed base along the first direction, the pushing member including a first elastic arm; and

[0009] A second driving unit is disposed within the accommodating cavity. The second driving unit includes a reset member capable of moving relative to the push member in a second direction opposite to the first direction. The reset member includes a stop portion. The first elastic arm is configured to abut against the stop portion to prevent the reset member from moving in the second direction.

[0010] The first elastic arm is further configured to elastically abut against the inner wall of the accommodating cavity to guide the movement of the pusher along the first direction.

[0011] Through the collaboration of the first and second driving units, the needle can be withdrawn immediately after the micro biosensor is implanted, reducing the lag in needle withdrawal. Furthermore, the first elastic arm elastically abuts against the inner wall of the accommodating cavity for guidance, reducing vibration during the implantation process and improving the stability of the implantation.

[0012] In a further technical solution, the pushing component is provided with a guide groove, and the resetting component is completely disposed within the guide groove.

[0013] The guide groove restricts the repositioning component to slide only axially, preventing it from shifting or tilting and thus avoiding increased pain for the patient.

[0014] In a further technical solution, the guide groove includes a first guide groove and a second guide groove arranged sequentially along the first direction. The cross-sectional area of ​​the first guide groove is larger than that of the second guide groove. A portion of the reset member is located in the first guide groove, and a portion is located in the second guide groove.

[0015] By segmenting and sliding the reset component within the first guide groove and the second guide groove, the reset component can be installed in conjunction with the pusher in the first guide groove, while the second guide groove slides close to the reset component, constraining the radial movement of the reset component, suppressing vibration during needle retraction, and ensuring a smooth needle retraction process.

[0016] In a further technical solution, the pushing member includes a fixed arm, which is arranged parallel to the first elastic arm along the first direction on both sides of the reset member to form a first guide groove, and the fixed arm abuts against the inner wall of the accommodating cavity.

[0017] The fixed arm and the first elastic arm are distributed on both sides of the reset member, abutting against the inner wall of the accommodating cavity, and together forming the first guide groove to guide the movement of the reset member, so that the reset member can slide stably in the first guide groove, suppressing the lateral displacement of the reset member, and the fixed arm can also provide rigid support to improve the structural strength.

[0018] In a further technical solution, the accommodating cavity includes a first accommodating cavity and a second accommodating cavity arranged sequentially along a first direction. The cross-sectional area of ​​the first accommodating cavity is smaller than that of the second accommodating cavity. The first elastic arm is configured to abut against the inner wall of the first accommodating cavity and the inner wall of the second accommodating cavity.

[0019] By setting different cross-sectional areas of the first and second accommodating cavities, a sudden change in cross-sectional area occurs at the connection between the first and second accommodating cavities. When the first elastic arm enters the second accommodating cavity from the first accommodating cavity, due to the elasticity of the first elastic arm itself and the fact that its sides are no longer restricted by the first accommodating cavity, it is in a free diverging state, thereby detaching from the reset member and enabling the reset member to perform the needle withdrawal process, thus achieving a seamless connection operation of automatic and immediate needle withdrawal after implantation.

[0020] In a further technical solution, the first elastic arm is provided with a first inclined surface, and the stop portion is provided with a second inclined surface, with the first inclined surface and the second inclined surface abutting each other in parallel.

[0021] By setting the first and second inclined surfaces, contact stress can be dispersed, mechanical vibration during the release of the elastic arm can be reduced, the stability of the reset component during the needle withdrawal process can be improved, and the precise linkage between the needle withdrawal action and the implantation depth can be ensured, avoiding delayed unlocking, improving needle withdrawal efficiency, and optimizing the user experience.

[0022] In a further technical solution, the first elastic arm is provided with a third inclined surface, and a fourth inclined surface is provided at the connection between the inner wall of the first accommodating cavity and the inner wall of the second accommodating cavity, wherein the third inclined surface and the fourth inclined surface are parallel and abut against each other.

[0023] The cross-sectional area changes abruptly at the connection between the first and second accommodating cavities. By introducing a beveled surface, a smooth transition structure is formed, reducing the resistance to the deformation of the first elastic arm and improving the smoothness and stability of the release action.

[0024] In a further technical solution, the first driving unit includes a first driving member, which abuts against the fixed base and the pushing member to drive the micro biosensor to move along the first direction.

[0025] By setting the first driving component to a pre-tightened state, the driving component can be quickly pushed to move in the early stage of implantation, thereby enabling the micro biosensor to be implanted and to be stably advanced when the end elasticity decreases.

[0026] In a further technical solution, the second driving unit includes a second driving member, which abuts between the pushing member and the reset member to drive the reset member to move along the second direction.

[0027] By setting a second driving component, the reset component can be driven to move in a second direction, enabling immediate and rapid needle withdrawal after implantation. This avoids the implantation and withdrawal processes sharing the same driving component, thus improving the independence of motion control.

[0028] In a further technical solution, the pusher includes a second elastic arm, which has a locked state and an unlocked state. The second elastic arm is configured to engage with the fixed seat in the locked state to prevent the pusher from moving in the first direction, and to release from engagement with the fixed seat and elastically abut against the inner wall of the accommodating cavity in the unlocked state.

[0029] The second elastic arm can lock the pusher to prevent accidental implantation. After unlocking, the second elastic arm can slide against the inner wall of the accommodating cavity. Together with the fixing arm, the first elastic arm and the inner wall of the accommodating cavity, it can further maintain the stability of the implantation.

[0030] In a further technical solution, one of the pushing member and the fixed base is provided with a guide rail along the first direction, and the other is provided with a corresponding guide groove, and the guide rail is slidably disposed in the guide groove.

[0031] By setting guide rails and grooves, frictional resistance during implantation can be reduced, the radial displacement and angular momentum of the pusher can be constrained, vibration can be reduced, and the contact between the fixed arm, the first elastic arm and the inner wall of the accommodating cavity can form a multi-stage guiding structure to improve implantation stability.

[0032] By sliding the reset component within the first and second guide grooves, the implantation process is ensured to be smooth, reducing pain and the risk of bleeding at the implantation site.

[0033] In summary, this utility model has the following beneficial effects:

[0034] By setting the first elastic arm to abut against the stop portion of the reset member, the movement of the reset member along the second direction is restricted, ensuring the stability of the reset member and ensuring stable positioning of the sensor during the implantation stage. In addition, the first elastic arm can also abut against the inner wall of the accommodating cavity during the implantation process, constraining the radial displacement of the pusher, which can suppress vibration during the implantation of the micro biosensor and improve implantation stability. Furthermore, the first elastic arm set in this application has the functions of blocking the movement of the reset member and providing guidance for the pusher, thus simplifying the structural design, reducing structural costs, simplifying the assembly process, and improving production efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is the front view of this application;

[0037] Figure 2 This is the right view of this application;

[0038] Figure 3 This is a three-dimensional schematic diagram of the present application with the first shell removed;

[0039] Figure 4 This application Figure 2 A cross-sectional view along the AA direction;

[0040] Figure 5 This is a three-dimensional structural diagram of the fixing base in this application;

[0041] Figure 6 This is a first three-dimensional structural schematic diagram of the pusher component in this application;

[0042] Figure 7 This is a schematic diagram of the second three-dimensional structure of the pusher in this application;

[0043] Figure 8 This is a three-dimensional structural diagram of the reset component in this application;

[0044] Figure 9 This is a three-dimensional structural diagram of the safety buckle unit in this application;

[0045] Figure 10 This is a schematic diagram of the initial state of the first drive unit and the second drive unit installed in the fixed base in this application;

[0046] Figure 11 This is a schematic diagram of the state when the first driving unit is implanted in this application;

[0047] Figure 12 This is a schematic diagram of the second drive unit after the pin is retracted in this application;

[0048] Figure 13 This is a three-dimensional structural schematic diagram of the sensor unit in this application;

[0049] Figure 14 This is a schematic diagram of the top view after the first shell has been removed in this application;

[0050] Figure 15 This is a bottom view sectional diagram of the cooperation between the first drive unit and the fixed base unit in this application;

[0051] Figure 16 This application Figure 10 Enlarged view of point B in the middle;

[0052] In the diagram: 10. Outer shell; 101. First shell; 102. Second shell; 103. Third shell; 20. Fixing base; 201. Limiting hole; 202. Guide strip surface; 203. Guide groove; 204. Hook; 205. Groove; 210. Receiving cavity; 210a. First receiving cavity; 210b. Second receiving cavity; 211. Fourth inclined surface; 30. First driving unit; 301. First driving component; 302. Guide rail; 310. Pushing component; 311. First elastic arm; 312. Guide groove; 312a. First guide groove; 312b. Second guide groove; 313. Cylindrical body; 314. Core body; 315. Fixing 316. Arm; 317. Third inclined surface; 318. Second elastic arm; 319. Locking block; 320. Pressure plate; 321. Clamping plate; 40. Clamping hook; 412. Second drive unit; 413. Second drive component; 414. Reset component; 415. Stop part; 416. Needle bar body; 417. Half-wall needle; 518. Safety buckle unit; 519. Sliding plate; 510. Elastic plate; 511. Toggle block; 512. Elastic buckle; 513. Sliding block; 514. Elastic buckle; 515. Sliding block; 516. Push block; 517. Guide sliding block; 518. Anti-rotation strip; 520. Button; 521. Push rod; 60. Sensor unit; 601. Adhesive sheet; 602. Placement slot; 603. Sensor. Detailed Implementation

[0053] The present invention will be further described in detail below with reference to embodiments. However, the implementation of the present invention is not limited thereto. The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0054] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0055] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0058] Combined with appendix Figures 1 to 16 The image shows a miniature biosensor implantation device, with reference to... Figures 1 to 4 The device includes a housing 10, a mounting base 20, a first drive unit 30, a second drive unit 40, and a safety buckle unit 50. A detachable sensor unit 60 is mounted on the bottom of the mounting base 20. The housing 10 includes a first housing 101, a second housing 102, and a third housing 103, with the third housing 103 located at the bottom. The first housing 101 and the second housing 102 are detachably fixed to the third housing 103 by clips or screws. The third housing 103 can be separated from the first housing 101 and the second housing 102. The sensor unit 60 is snapped into the middle of the third housing 103 and can penetrate the third housing 103 to be attached to the patient's skin. The modular design facilitates disassembly and maintenance, allowing for quick replacement of the sensor unit 60 or cleaning of the internal structure, thus reducing maintenance costs.

[0059] The first housing 101 and the second housing 102 are installed on the third housing 103 at an angle, so that they can have a certain tilt angle during implantation, making it easier for the user to perform the implantation operation at a more convenient angle. In addition, anti-slip textures are added to the first housing 101 and the second housing 102 to make it easier for the user to hold, reduce hand slippage during implantation, and improve operation accuracy.

[0060] Reference Figure 4 The fixing seat 20 is fixedly installed inside the outer shell 10, and a receiving cavity 210 extending along the first direction is provided inside the fixing seat 20;

[0061] Reference Figures 5 to 12The first driving unit 30 is disposed in the accommodating cavity 210. The first driving unit 30 includes a pusher 310 that can move relative to the fixed seat 20 in a first direction, the first direction being the implantation direction. The pusher 310 includes a first elastic arm 311. The second driving unit 40 is disposed in the accommodating cavity 210. The second driving unit 40 includes a reset member 410 that can move relative to the pusher 310 in a second direction opposite to the first direction, the second direction being the needle withdrawal direction. The reset member 410 includes a stop portion 411. The first elastic arm 311 is configured to abut against the stop portion 411 to prevent the reset member 410 from moving in the second direction. During the implantation process, the pusher and the reset member move together in the first direction.

[0062] The first elastic arm 311 is also configured to elastically abut against the inner wall of the accommodating cavity 210 to guide the movement of the pusher 310 along the first direction, constrain radial displacement, and suppress vibration of the pusher during implantation.

[0063] It should be noted that in other embodiments, the fixing base 20 in this application can be integrally set with the outer shell 10 without being set separately, that is, the pusher 310 is slidably set inside the outer shell 10 to complete the implantation process of the micro biosensor.

[0064] Reference Figure 11 and Figure 12 In one embodiment, the pusher 310 is provided with a guide groove 312, and the reset member 410 is completely disposed in the guide groove 312. The guide groove 312 includes a first guide groove 312a and a second guide groove 312b arranged sequentially along a first direction. The cross-sectional area of ​​the first guide groove 312a is larger than the cross-sectional area of ​​the second guide groove 312b. A portion of the reset member 410 is located in the first guide groove 312a and a portion is located in the second guide groove 312b.

[0065] Reference Figures 5 to 13Specifically, the pusher 310 is divided into upper and lower parts. The upper part is a cylindrical body 313, and the lower part is a core body 314. The first guide groove 312a is located in the core body 314 in the lower part, and the second guide groove 312b is located in the cylindrical body 313 in the upper part. The first guide groove 312a and the second guide groove 312b can be set to be circular. The diameter of the first guide groove 312a is larger than the diameter of the second guide groove 312b. The reset member 410 includes a needle bar 412, a stop part 411, and a half-wall needle 413. The needle bar 412 is slidably disposed in the first guide groove 312a, and the stop part 411 is slidably disposed in the second guide groove 312b. The stop part 411 is fixed to the needle bar 412. At the top, the half-wall needle 413 is detachably fixed to the bottom of the needle bar 412. The half-wall needle 413 is generally a disposable item to avoid repeated exposure and reduce the risk of cross-infection. The half-wall needle 413 has a semi-circular arc design to reduce the wound area during implantation. During installation, the detection needle of the sensor unit 60 is located in the inner circle of the semi-circular arc of the half-wall needle 413. The first guide groove 312a is rectangular and, in conjunction with the partial rectangular setting of the needle bar 412, forms a sliding constraint structure. The length of the first guide groove 312a exceeds two-thirds of the length of the rectangular part of the needle bar 412, so that the needle withdrawal process can be carried out stably. The second guide groove 312b is circular to facilitate the installation and cooperation of the stop part 411 and the first elastic arm 311.

[0066] Reference Figures 6 to 8 and Figures 10 to 12 In one embodiment, the pusher 310 further includes a fixed arm 315, which is arranged parallel to the first elastic arm 311 along a first direction to form a first guide groove 312a on both sides of the resetter 410, and the fixed arm 315 abuts against the inner wall of the accommodating cavity 210.

[0067] Specifically, fixed arms 315 are uniformly arranged in a circular pattern on the outer periphery of the cylindrical body 313. There can be three first elastic arms 311 and three fixed arms 315. The three first elastic arms 311 and the three fixed arms 315 can be arranged in a circular pattern at intervals. The outer peripheral surfaces of the fixed arms 315 and the first elastic arms 311 abut against the inner wall of the accommodating cavity 210. The fixed arms 315 can strengthen the structural strength of the cylindrical body 313 and also play a guiding role, constraining the radial displacement of the cylindrical body 313 and improving the stability of the micro biosensor during implantation.

[0068] Reference Figures 10 to 12 In one embodiment, the accommodating cavity 210 includes a first accommodating cavity 210a and a second accommodating cavity 210b arranged sequentially along a first direction. The cross-sectional area of ​​the first accommodating cavity 210a is smaller than the cross-sectional area of ​​the second accommodating cavity 210b. The first elastic arm 311 is configured to abut against the inner wall of the first accommodating cavity 210a and the inner wall of the second accommodating cavity 210b.

[0069] Specifically, the receiving cavity 210 within the fixing base 20 is designed in a stepped manner, consisting of an upper part (first receiving cavity 210a) and a lower part (second receiving cavity 210b). The internal contours of the first receiving cavity 210a and the second receiving cavity 210b can be circular or other shapes, without limitation. When the internal contour is circular, the diameter of the first receiving cavity 210a is smaller than the diameter of the second receiving cavity 210b, forming a structure with abrupt changes in cross-sectional area. In its free state, the top of the first elastic arm 311 radiates outward. When the first elastic arm 311 moves from the upper part of the first receiving cavity 210a into the lower part of the second receiving cavity 210b, due to the abrupt change in cross-sectional area of ​​the receiving cavity 210, the top of the first elastic arm 311 is no longer constrained by the first receiving cavity 210a and radiates outward, thereby releasing the reset member 410. The change state is as follows: Figures 10 to 12 The length of the first elastic arm 311 should not be too long to ensure that the needle can be withdrawn immediately after the implantation depth is reached, so as to achieve automatic and seamless connection between the implantation process and the needle withdrawal process.

[0070] Reference Figures 10 to 12 and Figure 16 In one embodiment, the first elastic arm 311 is provided with a first inclined surface 311a, and the stop portion 411 is provided with a second inclined surface 411a. The first inclined surface 311a and the second inclined surface 411a abut against each other in parallel. The first elastic arm 311 is provided with a third inclined surface 316, and a fourth inclined surface 211 is provided at the connection between the inner wall of the first accommodating cavity 210a and the inner wall of the second accommodating cavity 210b. The third inclined surface 316 and the fourth inclined surface 211 abut against each other in parallel.

[0071] Specifically, the first inclined surface 311a is located on the side of the first elastic arm 311 facing the stop portion 411, which is circular. The second inclined surface 411a is a circular inclined surface on the stop portion 411. The three first inclined surfaces 311a can abut against the second inclined surface 411a in parallel. The three first inclined surfaces 311a are evenly distributed, providing an average pushing force and facilitating the smooth retraction of the needle by the subsequent reset member 410. When the first elastic arm 311 has not disengaged from the first receiving cavity 210a, the first inclined surface 311a abuts against the second inclined surface 411a. A third inclined surface 316 is provided on the side of the three first elastic arms 311 that are far apart from each other. A fourth inclined surface 211 is provided at the connection between the inner wall of the first accommodating cavity 210a and the inner wall of the second accommodating cavity 210b. When the first elastic arm 311 leaves the first accommodating cavity 210a and enters the second accommodating cavity 210b, the third inclined surface 316 abuts against the fourth inclined surface 211 to release, reducing the vibration caused by the pressure change, reducing the impact force when the elastic arm is released, and facilitating the subsequent pushing of the first elastic arm 311 into the first accommodating cavity 210a.

[0072] Reference Figures 6 to 12In one embodiment, the first driving unit 30 includes a first driving member 301, which abuts between the fixed base 20 and the pusher 310 to drive the micro biosensor to move along a first direction. The second driving unit 40 includes a second driving member 401, which abuts between the pusher 310 and the reset member 410 to drive the reset member 410 to move along a second direction.

[0073] Specifically, the first driving component 301 is an implantation spring, which is sleeved on the outer periphery of the cylindrical body 313. One end abuts against the top of the fixed arm 315, and the other end abuts against the top wall of the first accommodating cavity 210a. The second driving component 401 is a needle retraction spring, with one end abutting against the stop part 411 and the other end abutting against the core body 314. Both the first driving component 301 and the second driving component 401 are in a pre-compressed state in the initial state. When the implantation spring is released, it quickly pushes the pusher 310 to move, thereby realizing the implantation of the micro biosensor.

[0074] It should be noted that in other embodiments, the first driving member and the second driving member can be replaced by other driving structures, and are not limited to using spring drive. In addition, the second driving member can also be replaced by a tension spring structure to realize the needle retraction. This application does not limit this.

[0075] In one embodiment, the pusher 310 further includes a second elastic arm 317, which has a locked state and an unlocked state. The second elastic arm 317 is configured to engage with the fixed seat 20 in the locked state to prevent the pusher 310 from moving in the first direction, and to release the engagement with the fixed seat 20 and elastically abut against the inner wall of the receiving cavity 210 in the unlocked state.

[0076] Specifically, the fixed base 20 has two symmetrically arranged limiting holes 201, and the core body 314 has two symmetrically arranged second elastic arms 317. The second elastic arms 317 are fixed with locking blocks 318. The locking blocks 318 can be locked into the limiting holes 201 to lock the pusher 310 and prevent accidental triggering of the implantation process. When the first drive unit 30 is installed into the fixed base 20, the two second elastic arms 317 will drive the locking blocks 318 into the limiting holes 201 due to elasticity to restrict the movement of the pusher 310. When the second elastic arms 317 are unlocked, they can slide along the receiving cavity to guide the sliding.

[0077] Key references Figure 14 and Figure 15 In one embodiment, one of the pusher 310 and the fixed base 20 is provided with a guide rail 302 along a first direction, and the other is provided with a guide groove 203. The guide rail 302 is slidably disposed in the guide groove 203.

[0078] Specifically, guide rails 302 are fixed to the outer periphery of the core body 314, and three are evenly arranged in a circumferential shape. Guide grooves 203 are set in the fixing seat 20. The arrangement of guide rails 302 and guide grooves 203 can ensure that the core body 314 can move stably during sliding, reduce vibration, thereby improving the stability of implantation and reducing patient pain. Figure 6 , Figure 7 , Figure 14 and Figure 15 As shown, there are three guide grooves 203 and three guide rails 302, all of which are evenly arranged in a circle. The extension length of the guide rails 302 is greater than 1.2 times the implantation stroke, which increases the stability during sliding and prevents the first drive unit 30 from shaking when implanted.

[0079] In one embodiment, the focus is on... Figure 3 and Figure 5 The bottom of the mounting base 20 is provided with four hooks 204 for clamping the sensor unit 60, which facilitates the installation and assembly of the sensor unit.

[0080] In one embodiment, a safety latch unit 50 is slidably mounted on the fixing base 20, and a button 520 is slidably mounted on the housing 10. The safety latch unit refers to... Figure 9 The safety buckle unit 50 includes a sliding plate 511, an elastic plate 512, a toggle block 513, an elastic buckle 514, and a slider 515. Two sliding plates 511 are provided and fixed to both sides of the slider 515. The two sliding plates 511 are slidably mounted on both sides of the fixed base 20. The elastic plate 512 is fixed to one side of the sliding plate 511, and a push block 516 is fixed on the side of the elastic plate 512 facing the fixed base 20. The push block 516 can be inserted into the limiting hole 201 and contact the second elastic arm 317. The button 520 includes a push rod 521, which can abut against the elastic plate 512. The toggle block 513 is fixed to the slider 515. 3. Extending out of the outer shell 10, the slider 515 is fixed with an elastic buckle 514. The elastic buckle 514 can be locked in the groove 205 set on the fixed seat 20. The two sliding plates 511 are fixed with anti-rotation strips 518 at their far ends. The push rod 521 can be inserted into the anti-rotation strip 518. The vertical cross section of the push rod 521 is rectangular. When inserted into the anti-rotation strip 518, it can prevent the button 520 from rotating. The design of the safety buckle unit 50 not only simplifies the use steps, but also avoids operation errors caused by accidental touch by simply pressing the button 520 to complete the entire implantation and automatic needle withdrawal process after implantation. It also improves the safety of use by avoiding operation errors caused by accidental touch.

[0081] In one embodiment, guide blocks 517 are fixed on the inner surfaces of the two sliding plates 511 that are close to each other, and two vertically arranged guide strips 202 are provided on the fixed base 20. The guide blocks 517 are locked on the guide strips 202, so that the safety buckle unit 50 can slide up and down along the fixed base 20.

[0082] In one embodiment, the sensor unit refers to Figure 13 The sensor unit 60 includes an adhesive patch 601, a placement slot 602, a sensor 603, and a detection needle. The sensor 603 is a miniature biosensor. The detection needle is mounted on the sensor 603 and electrically connected to it. The sensor 603 can be pushed into the placement slot 602, which is fixed to the adhesive patch 601. The placement slot 602 can be held by the hook 204, improving the convenience of replacing the adhesive patch. The bottom surface of the adhesive patch 601 is adhesive and can adhere to the patient's skin surface. The adhesive patch 601 can be made of medical-grade silicone material to reduce the probability of allergic or inflammatory reactions.

[0083] In one embodiment, a clamping plate 320 and a clamping hook 321 are fixed on the bottom surface of the core body 314. The clamping plate 320 and the clamping hook 321 are used to clamp the sensor 603. A pressure plate 319 is also fixed on the bottom surface of the core body 314, which can press the sensor 603 into the placement groove 602. The sensor 603 can be easily installed on the lower part of the fixing base, and it is easy to replace or install a new sensor 603.

[0084] The method of using this miniature biosensor implantation device is as follows:

[0085] In the initial state, refer to Figure 4 and Figure 11 Four hooks 204 clamping and placement slots 602; see reference Figure 12 The first drive unit 30 is installed in the fixed base 20, so that the first drive member 301 is pressed, and the locking block 318 on the second elastic arm 317 is locked into the limiting hole 201.

[0086] Sensor 603 is installed between clamping plate 320 and clamping hook 321;

[0087] The 413 half-wall needle wraps around the detection needle.

[0088] The process involves two steps: insertion and needle removal.

[0089] Implantation steps: First, open the safety latch unit 50 and slide the push block 513 upwards. At this time, the sliding plate 511 no longer blocks the limiting hole 201, and the elastic plate 512 moves to the level of the limiting hole 201. By pressing the two buttons 520, the push rod 521 pushes the elastic plate 512, causing the elastic plate 512 to undergo elastic deformation. This causes the push block 516 on the elastic plate 512 to push the second elastic arm 317, which is stuck in the limiting hole 201, thereby releasing the first drive unit 30 from the limiting position. At this time, the first drive unit 30... Under the action of the first driving member 301, which is also the implantation spring, the moving unit 30 pushes the first driving unit 30 downward. The first driving unit 30 drives the second driving unit 40 to move downward. At the same time, the bottom of the first driving unit 30 pushes the hook 204 to open, so that the hook 204 no longer clamps the placement slot 602. At the same time, the sensor 603 moves downward and is pushed into the placement slot 602 by the pressure plate 319. The half-wall needle 413 and the detection needle are implanted together into the subcutaneous tissue. At this time, because the adhesive patch 601 is adhesive, it sticks to the skin surface.

[0090] Needle retraction steps: When the first elastic arm 311 moves below the first accommodating cavity 210a, the first elastic arm 311 opens outward. At this time, the second driving unit 40 is unrestricted and quickly bounces upward under the action of the second driving member 401, which is also the needle retraction spring. The half-wall needle 413 is also lifted upward, completing the needle retraction. The sensor unit 60 is attached to the skin surface by the adhesive piece 601 for continuous monitoring.

[0091] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand and implement the content of this utility model. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A miniature biosensor implantation device, characterized in that, include: The fixing seat includes a receiving cavity extending along a first direction; A first driving unit, disposed within the accommodating cavity, includes a pushing member capable of moving relative to the fixed base along the first direction, the pushing member including a first elastic arm; and A second driving unit is disposed within the accommodating cavity. The second driving unit includes a reset member capable of moving relative to the push member in a second direction opposite to the first direction. The reset member includes a stop portion. The first elastic arm is configured to abut against the stop portion to prevent the reset member from moving in the second direction. The first elastic arm is further configured to elastically abut against the inner wall of the accommodating cavity to guide the movement of the pusher along the first direction.

2. The micro biosensor implantation device according to claim 1, characterized in that, The pusher has a guide groove, and the reset member is completely disposed within the guide groove.

3. The micro biosensor implantation device according to claim 2, characterized in that, The guide groove includes a first guide groove and a second guide groove arranged sequentially along the first direction. The cross-sectional area of ​​the first guide groove is larger than that of the second guide groove. A portion of the reset member is located in the first guide groove and a portion is located in the second guide groove.

4. The micro biosensor implantation device according to claim 1, characterized in that, The pushing member includes a fixed arm, which is arranged parallel to the first elastic arm along the first direction on both sides of the reset member to form a first guide groove, and the fixed arm abuts against the inner wall of the accommodating cavity.

5. The micro biosensor implantation device according to claim 1, characterized in that, The accommodating cavity includes a first accommodating cavity and a second accommodating cavity arranged sequentially along a first direction. The cross-sectional area of ​​the first accommodating cavity is smaller than that of the second accommodating cavity. The first elastic arm is configured to abut against the inner wall of the first accommodating cavity and the inner wall of the second accommodating cavity.

6. The micro biosensor implantation device according to claim 1, characterized in that, The first elastic arm has a first inclined surface, and the stop portion has a second inclined surface, with the first inclined surface and the second inclined surface abutting each other in parallel.

7. A micro biosensor implantation device according to claim 5, characterized in that, The first elastic arm is provided with a third inclined surface, and a fourth inclined surface is provided at the connection between the inner wall of the first accommodating cavity and the inner wall of the second accommodating cavity. The third inclined surface and the fourth inclined surface are parallel and abut against each other.

8. The micro biosensor implantation device according to claim 1, characterized in that, The first driving unit includes a first driving member, which abuts between the fixed base and the pushing member to drive the micro biosensor to move along the first direction.

9. A micro biosensor implantation device according to claim 1, characterized in that, The second driving unit includes a second driving member, which abuts between the pushing member and the resetting member to drive the resetting member to move along the second direction.

10. A micro biosensor implantation device according to claim 1, characterized in that, The pusher includes a second elastic arm, which has a locked state and an unlocked state. The second elastic arm is configured to engage with the fixed seat in the locked state to prevent the pusher from moving in a first direction, and to release from engagement with the fixed seat and elastically abut against the inner wall of the accommodating cavity in the unlocked state.

11. A micro biosensor implantation device according to claim 1, characterized in that, One of the pusher and the fixed base is provided with a guide rail along the first direction, and the other is provided with a guide groove. The guide rail is slidably disposed in the guide groove.

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