Targeted drug delivery device for nanoparticle drugs
By introducing a drive component and a permanent magnet into the targeted drug delivery device, the problems of injection instability and contamination risk in existing devices are solved, achieving uniform drug distribution and precise injection, and improving the safety and accuracy of drug delivery.
Patent Information
- Application Number
- CN202512024430.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing targeted drug delivery devices are susceptible to external interference, resulting in inconsistent injection speed and dosage. They lack effective guidance mechanisms, making it difficult for drugs to accurately reach the target area. Furthermore, the exposure of the needle to the air increases the risk of infection.
The design incorporates a drug delivery tube, a drive assembly, a lifting assembly, and a permanent magnet. The movement of the needle and drug injection are controlled by an electric push rod and a drive motor. A rubber pad isolates the needle from the outside environment, and the permanent magnet enhances the uniform distribution of the drug in the target area and the dynamic targeting effect.
It achieves stability and precision in drug injection, avoids needle contamination, ensures uniform drug distribution and dynamic targeting, and improves the safety and accuracy of drug administration.
Smart Images
Figure CN121570685A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of targeted drug delivery technology, specifically to a targeted drug delivery device for nanoparticle drugs. Background Technology
[0002] Nanoparticle drugs are formulations formed by encapsulating or adsorbing drug molecules in carrier materials with a particle size of 1-100 nanometers using nanotechnology. They have advantages such as precise targeting, improved bioavailability, and reduced side effects, and are widely used in fields such as cancer treatment, gene drug delivery, and vaccine development.
[0003] Existing targeted drug delivery devices rely on simple manual operation. Because manual operation is easily affected by external interference or the instability of personnel, it can lead to inconsistent injection speed and dosage, which in turn affects the accurate delivery of drugs. Furthermore, some targeted drug delivery devices lack effective guidance mechanisms, causing drugs to fail to reach the intended target point or target area accurately. At the same time, during targeted drug delivery, due to human negligence, after the needle is installed, the drug cannot be injected immediately, leaving the needle exposed to the air. The air may carry bacteria, dust, and other contaminants, thereby increasing the risk of infection. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a targeted drug delivery device for nanoparticles, solving the problems mentioned in the background section.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A targeted drug delivery device for nanoparticles includes a drug delivery tube, a needle movably mounted at the outlet of the drug delivery tube, an installation cross plate fixedly mounted on the outer side of the drug delivery tube, a driving assembly provided on the installation cross plate, a driving cylinder provided on the driving assembly, and a piston plate fixedly mounted on the driving cylinder.
[0007] A bracket handle is fixedly installed on the upper end face of the mounting plate. A lifting component is provided on the bracket handle. An annular tube is provided on the lifting component. A rubber pad is fixedly installed on the lower end face of the annular tube.
[0008] An auxiliary component is provided on the outside of the annular tube, and a permanent magnet is provided on the auxiliary component. The permanent magnet enhances the uniform distribution of the drug in the target area and the dynamic targeting effect.
[0009] Preferably, the lifting assembly includes a mounting groove fixedly mounted on the bracket handle, an electric push rod fixedly mounted in the mounting groove, a lifting plate fixedly mounted on the output shaft of the electric push rod, an upper connecting frame fixedly mounted on the lifting plate, and an upper connecting rod rotatably mounted on the upper connecting frame.
[0010] Preferably, a sliding groove is formed in the mounting plate, a sliding block is slidably mounted in the sliding groove, an upper mounting frame is fixedly mounted on the upper end surface of the sliding block, a lower mounting frame is fixedly mounted on the lower end surface of the sliding block, a lower connecting rod is rotatably mounted on the lower mounting frame, and a lower connecting frame is fixedly mounted on the upper end surface of the annular tube.
[0011] Preferably, the annular tube is slidably mounted on the outer side surface of the administration tube, the upper end of the upper connecting rod is rotatably connected to the upper mounting frame, the lower end of the lower connecting rod is rotatably mounted on the lower connecting frame, and the upper connecting rod and the lower connecting rod are both arranged in an inclined manner.
[0012] Preferably, an L-shaped frame rod is fixedly mounted on the outer side surface of the lifting plate, an installation ring is slidably mounted on the annular tube, a positioning ring is rotatably mounted on the installation ring, a vertical sliding groove is formed in the outer side surface of the bracket handle, and the bottom end of the L-shaped frame rod is fixedly mounted on the positioning ring.
[0013] Preferably, the driving assembly comprises a driving motor fixedly mounted on the mounting plate, a driving screw rod is fixedly mounted on the output end of the driving motor, a driving screw hole is formed in the driving cylinder and used in cooperation with the driving screw rod, and a large chain wheel is fixedly mounted on the driving screw rod.
[0014] Preferably, a stable plate is fixedly mounted on the outer side surface of the mounting plate, a rotating vertical rod is rotatably mounted on the stable plate, a small chain wheel is fixedly mounted on the rotating vertical rod, a gear column is fixedly mounted on the bottom end of the rotating vertical rod, and an annular tooth block group is fixedly mounted on the outer side surface of the installation ring.
[0015] Preferably, the large chain wheel is in transmission with the small chain wheel through a chain, the gear column is in meshing with the annular tooth block group, and the driving screw rod is movably mounted with the driving screw hole.
[0016] Preferably, the auxiliary assembly comprises a U-shaped frame plate fixedly mounted on the installation ring, a rotating horizontal shaft is rotatably mounted on the U-shaped frame plate, a pressure receiving arc block is fixedly mounted on the inner side surface of the permanent magnet, and an arc-shaped protruding block is fixedly mounted on the outer side surface of the annular tube.
[0017] Preferably, the permanent magnet is fixedly mounted on the rotating horizontal shaft, the arc-shaped protruding block is in sliding contact with the pressure receiving arc block, the number of the arc-shaped protruding blocks is plural, and the arc-shaped protruding blocks are uniformly distributed.
[0018] The application provides a nanoparticle drug targeting administration device.
[0019] 1、The present application, when the need to inject the drug in the body through the start of the electric push rod driven lifting plate down, on the lifting plate on the upper connecting frame will drive the upper link rod synchronous movement, using the upper link rod and the sliding block on the upper mounting bracket cooperation, so that the sliding block in the sliding groove to the outside, sliding block in the movement, using the sliding block upper and lower mounting bracket and the lower link rod cooperation, the lower link rod and the lower connecting bracket cooperation, thus driving the annular pipe on the upward movement of the drug delivery tube, the needle in the annular pipe will pass through the rubber pad exposed outside, then through the drive assembly driven piston plate in the drug delivery tube, so that the drug in the drug delivery tube into the personnel body, using the rubber pad on the annular pipe to ensure that the needle and the outside isolation, prevent the outside environment of the needle pollution, ensure that the needle injection before always keep clean and sterile, avoid pollution drug;
[0020] 2、The present application, when the lifting plate down, the positioning ring on the L type frame rod will drive the installation ring synchronous down, the permanent magnet on the installation ring will be in the vicinity of the needle, effectively enhance the uniform distribution and dynamic targeting effect of drug in the target area, at the same time start drive motor, using the drive motor driven drive screw rotation, through the drive screw and drive cylinder cooperation, ensure the piston plate in the drug delivery tube movement, using the drive screw rotation produces accurate linear motion, ensure the piston plate in the tube stable and controllable movement, avoid sudden vibration or uneven force, ensure that the drug can be uniformly injected;
[0021] 3、The present application, when the drive screw rotation will drive the large sprocket rotation, the large sprocket in the rotation will drive the small sprocket through the chain rotation, the small sprocket in the rotation will drive the gear column through the rotating vertical rod, using the gear column and the installation ring on the ring gear block group cooperation, the permanent magnet on the installation ring will be in the state of rotation, using the rotating state of the permanent magnet, further enhance the accuracy and uniformity of drug injection.
[0022] 4、The present application, when the annular pipe in the drug delivery tube up, the arc convex block on the annular pipe will be in the same horizontal plane with the pressure arc block, when the installation ring in the process of rotation, the permanent magnet on the installation ring will pass through the U type frame plate and the limit rotation of rotating horizontal shaft, and the arc convex block intermittent contact with the pressure arc block, make the permanent magnet with rotating horizontal shaft as the center rotation, when the permanent magnet angle rotation, can effectively adjust the radiation range of the permanent magnet, further to enhance the accuracy and uniformity of drug injection. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 The overall structure of the present application is shown in the figure;
[0024] Figure 2 The structure of the drug delivery tube in the present application is shown in the figure;
[0025] Figure 3 Figure 1 Enlarged view of the middle A;
[0026] Figure 4 Structure diagram of the lifting assembly in the present application;
[0027] Figure 5 Structure diagram of the annular tube in the present application;
[0028] Figure 6 Structure diagram of the U-shaped bracket plate in the present application;
[0029] Figure 7 Structure diagram of the stabilizing plate in the present application;
[0030] Figure 8 Structure diagram of the mounting ring in the present application;
[0031] Figure 9 Structure diagram of the internal structure of the driving cylinder in the present application.
[0032] In the figure: 1, administration tube; 2, needle; 3, mounting cross plate; 4, driving cylinder; 5, piston plate; 6, bracket handle; 7, annular tube; 8, rubber pad; 9, permanent magnet; 10, mounting groove; 11, electric push rod; 12, lifting plate; 13, upper connecting bracket; 14, upper connecting rod; 15, sliding groove; 16, sliding block; 17, upper mounting bracket; 18, lower mounting bracket; 19, lower connecting rod; 20, lower connecting bracket; 21, L-shaped bracket rod; 22, mounting ring; 23, positioning ring; 24, vertical sliding slot; 25, driving motor; 26, driving screw; 27, driving screw hole; 28, large sprocket; 29, stabilizing plate; 30, rotating vertical rod; 31, small sprocket; 32, gear column; 33, annular gear block group; 34, U-shaped bracket plate; 35, rotating horizontal shaft; 36, pressure receiving arc block; 37, arc-shaped protrusion. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0034] Please refer to Figures 1-9This invention relates to a targeted drug delivery device for nanoparticles, comprising a drug delivery tube 1, with a needle 2 movably mounted at the outlet of the drug delivery tube 1. A mounting plate 3 is fixedly mounted on the outer side of the drug delivery tube 1. A driving assembly is mounted on the mounting plate 3, a driving cylinder 4 is mounted on the driving assembly, and a piston plate 5 is fixedly mounted on the driving cylinder 4. A support handle 6 is fixedly mounted on the upper end face of the mounting plate 3, and a lifting assembly is mounted on the support handle 6. An annular tube 7 is mounted on the lifting assembly, and a rubber pad 8 is fixedly mounted on the lower end face of the annular tube 7. An auxiliary assembly is mounted on the outer side of the annular tube 7, and a permanent magnet 9 is mounted on the auxiliary assembly. The permanent magnet 9 enhances the uniform distribution and dynamic targeting effect of the drug in the target area. The lifting assembly includes a mounting groove 10 fixedly mounted on the support handle 6, an electric push rod 11 fixedly mounted in the mounting groove 10, a lifting plate 12 fixedly mounted on the output shaft of the electric push rod 11, and an upper connecting frame fixedly mounted on the lifting plate 12. 13. An upper connecting rod 14 is rotatably mounted on the upper connecting frame 13. A sliding groove 15 is provided on the mounting plate 3. A sliding block 16 is slidably mounted in the sliding groove 15. An upper mounting frame 17 is fixedly mounted on the upper end face of the sliding block 16. A lower mounting frame 18 is fixedly mounted on the lower end face of the sliding block 16. A lower connecting rod 19 is rotatably mounted on the lower mounting frame 18. A lower connecting frame 20 is fixedly mounted on the upper end face of the annular tube 7. The annular tube 7 is slidably mounted on the outer side of the administration tube 1. The end of the upper connecting rod 14 away from the upper connecting frame 13 is rotatably connected to the upper mounting frame 17. The end of the lower connecting rod 19 away from the lower mounting frame 18 is rotatably mounted on the lower connecting frame 20. Both the upper connecting rod 14 and the lower connecting rod 19 are arranged at an angle. A positioning block is fixedly mounted on the outer side of the drive cylinder 4. The end of the drive cylinder 4 away from the drive assembly extends into the interior of the administration tube 1. The piston plate 5 is located inside the administration tube 1 and is slidably mounted with the administration tube 1.
[0035] In this embodiment, when the drug in the administration tube 1 needs to be injected into the human body, the electric push rod 11 is activated to drive the lifting plate 12 to descend. The upper connecting frame 13 on the lifting plate 12 will synchronously drive the upper connecting rod 14 to move synchronously. With the cooperation of the upper connecting rod 14 and the upper mounting frame 17 on the sliding block 16, the sliding block 16 moves outward in the sliding groove 15. When the sliding block 16 moves, with the cooperation of the upper and lower mounting frames 18 and the lower connecting rod 19, and the cooperation of the lower connecting rod 19 and the lower connecting frame 20, the annular tube 7 on the administration tube 1 moves upward. The needle 2 in the annular tube 7 will pass through the rubber pad 8 and be exposed on the outside. Then, the piston plate 5 is driven to move in the administration tube 1 through the drive assembly, thereby injecting the drug in the administration tube 1 into the human body. The rubber pad 8 on the annular tube 7 ensures that the needle 2 is isolated from the outside world, preventing the external environment from contaminating the needle 2, ensuring that the needle 2 is always clean and sterile before injection, and avoiding drug contamination.
[0036] The outer side of the lifting plate 12 is fixedly provided with an L-shaped frame rod 21, the annular pipe 7 is slidably provided with a mounting ring 22, the mounting ring 22 is rotatably provided with a positioning ring 23, the outer side of the support handle 6 is provided with a vertical sliding slot 24, the bottom end of the L-shaped frame rod 21 is fixedly installed on the positioning ring 23, the driving assembly comprises a driving motor 25 fixedly installed on the mounting horizontal plate 3, the output end of the driving motor 25 is fixedly provided with a driving lead screw 26, the driving cylinder 4 is provided with a driving lead screw hole 27 used in cooperation with the driving lead screw 26, the driving lead screw 26 is fixedly provided with a large chain wheel 28, the outer side of the mounting horizontal plate 3 is fixedly provided with a stable plate 29, the stable plate 29 is rotatably provided with a rotating vertical rod 30, the rotating vertical rod 30 is fixedly provided with a small chain wheel 31, the bottom end of the rotating vertical rod 30 is fixedly provided with a gear column 32, the outer side of the mounting ring 22 is fixedly provided with an annular toothed block set 33, the large chain wheel 28 is driven by a chain and the small chain wheel 31, the gear column 32 is engaged with the annular toothed block set 33, the driving lead screw 26 is movably installed with the driving lead screw hole 27, wherein the annular toothed block set 33 is in sliding contact with the gear column 32, ensuring that the mounting ring 22 is always engaged with the gear column 32 during lifting.
[0037] In this embodiment, when the lifting plate 12 is lowered, the positioning ring 23 on the L-shaped frame rod 21 will drive the mounting ring 22 to descend synchronously, the permanent magnet 9 on the mounting ring 22 will be near the needle 2, effectively enhancing the uniform distribution and dynamic targeting effect of the drug in the target area, at the same time, the driving motor 25 is started, the driving motor 25 drives the driving lead screw 26 to rotate, through the cooperation of the driving lead screw 26 and the driving cylinder 4, it is ensured that the piston plate 5 moves in the drug delivery pipe 1, the rotation of the driving lead screw 26 generates precise linear motion, ensuring that the movement of the piston plate 5 in the pipe is stable and controllable, avoiding sudden vibration or uneven force, ensuring that the drug can be uniformly injected, when the driving lead screw 26 rotates, the large chain wheel 28 will rotate, the large chain wheel 28 will drive the small chain wheel 31 to rotate through the chain when rotating, the small chain wheel 31 will drive the gear column 32 to rotate through the rotating vertical rod 30 when rotating, through the cooperation of the gear column 32 and the annular toothed block set 33 on the mounting ring 22, the permanent magnet 9 on the mounting ring 22 will be in a rotating state, through the permanent magnet 9 in the rotating state, the accuracy and uniformity of drug injection are further enhanced.
[0038] The auxiliary assembly comprises a U-shaped frame plate 34 fixedly installed on the mounting ring 22, a rotating horizontal shaft 35 rotatably installed on the U-shaped frame plate 34, a pressure receiving arc block 36 fixedly installed on the inner side of the permanent magnet 9, an arc-shaped protrusion 37 fixedly installed on the outer side of the annular pipe 7, the permanent magnet 9 is fixedly installed on the rotating horizontal shaft 35, the arc-shaped protrusion 37 is in sliding contact with the pressure receiving arc block 36, the number of arc-shaped protrusions 37 is multiple and uniformly distributed, wherein when the pressure receiving arc block 36 on the permanent magnet 9 is not in contact with the arc-shaped protrusion 37, the shaking generated thereby will not affect the needle 2, ensuring that the needle 2 can be normally used.
[0039] In this embodiment, when the annular tube 7 rises on the administration tube 1, the arc-shaped protrusion 37 on the annular tube 7 is at the same level as the pressed arc 36. When the mounting ring 22 rotates, the permanent magnet 9 on the mounting ring 22 rotates with the limiting rotation of the rotating horizontal shaft 35 and the intermittent contact of the arc-shaped protrusion 37 with the pressed arc 36, so that the permanent magnet 9 rotates around the rotating horizontal shaft 35 as the center. When the permanent magnet 9 rotates at an angle, the radiation range of the permanent magnet 9 can be effectively adjusted, further enhancing the accuracy and uniformity of drug injection.
[0040] Working principle: in use, when the drug in the administration tube 1 needs to be injected into the human body, the electric push rod 11 is started to drive the lifting plate 12 to descend, the upper connecting frame 13 on the lifting plate 12 will synchronously drive the upper connecting rod 14 to move synchronously, and the upper connecting rod 14 and the upper mounting frame 17 on the sliding block 16 are matched to make the sliding block 16 move outward in the sliding groove 15. When the sliding block 16 moves, the upper and lower mounting frames 18 on the sliding block 16 are matched with the lower connecting rod 19, and the lower connecting rod 19 is matched with the lower connecting frame 20, so as to drive the annular tube 7 on the administration tube 1 to move upward, the needle 2 in the annular tube 7 will be exposed outside through the rubber pad 8, and then the piston plate 5 in the administration tube 1 is driven by the driving assembly to move, so as to inject the drug in the administration tube 1 into the human body. The rubber pad 8 on the annular tube 7 ensures that the needle 2 is isolated from the outside world, prevents the outside environment from polluting the needle 2, ensures that the needle 2 is always clean and sterile before injection, avoids pollution of the drug, and when the lifting plate 12 descends, the positioning ring 23 on the L-shaped frame rod 21 will drive the mounting ring 22 to descend synchronously, the permanent magnet 9 on the mounting ring 22 will be near the needle 2, effectively enhancing the uniform distribution and dynamic targeting effect of the drug in the target area, and simultaneously starting the driving motor 25, the driving motor 25 drives the driving screw 26 to rotate, and through the cooperation of the driving screw 26 and the driving cylinder 4, the piston plate 5 in the administration tube 1 is ensured to move, the rotation of the driving screw 26 generates precise linear motion, the movement of the piston plate 5 in the tube is stable and controllable, sudden vibration or uneven force is avoided, and the drug can be uniformly injected. When the driving screw 26 rotates, the large sprocket 28 will rotate, the small sprocket 31 will rotate through the chain when the large sprocket 28 rotates, the gear column 32 will rotate through the rotating vertical rod 30 when the small sprocket 31 rotates, the permanent magnet 9 on the mounting ring 22 will be in a rotating state through the cooperation of the gear column 32 and the annular tooth block group 33 on the mounting ring 22, and the rotating state of the permanent magnet 9 enhances the accuracy and uniformity of drug injection. When the annular tube 7 rises on the administration tube 1, the arc convex block 37 on the annular tube 7 will be in the same horizontal plane as the pressure arc block 36, when the mounting ring 22 rotates, the permanent magnet 9 on the mounting ring 22 will rotate around the rotating horizontal shaft 35 through the U-shaped frame plate 34 and the limiting rotation of the rotating horizontal shaft 35, and the arc convex block 37 will intermittently contact the pressure arc block 36, so that the permanent magnet 9 rotates around the rotating horizontal shaft 35. When the permanent magnet 9 rotates by an angle, the radiation range of the permanent magnet 9 can be effectively adjusted, further enhancing the accuracy and uniformity of drug injection.
[0041] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, since the scope of the present application will be limited to the appended claims. It must be noted that, as used in the specification and the appended claims, the singular form "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a plurality of components. Also, the terms "comprises," "comprising," "includes," "including" or "contains," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, includes, contains or contains a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "about" and "substantially" are used herein to represent approximately, in the sense of close or approximate.
[0042] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, many modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the present application.
Claims
1. A targeted drug delivery device for nanoparticles, comprising a delivery tube (1), characterized in that: The outlet of the drug delivery tube (1) is movably fitted with a needle (2), and a mounting plate (3) is fixedly installed on the outer side of the drug delivery tube (1). A driving assembly is provided on the mounting plate (3), a driving cylinder (4) is provided on the driving assembly, and a piston plate (5) is fixedly installed on the driving cylinder (4). A bracket handle (6) is fixedly installed on the upper end face of the mounting plate (3). A lifting component is provided on the bracket handle (6). An annular tube (7) is provided on the lifting component. A rubber pad (8) is fixedly installed on the lower end face of the annular tube (7). An auxiliary component is provided on the outside of the annular tube (7), and a permanent magnet (9) is provided on the auxiliary component. The permanent magnet (9) enhances the uniform distribution of the drug in the target area and the dynamic targeting effect.
2. The targeted drug delivery device for nanoparticles according to claim 1, characterized in that: The lifting assembly includes a mounting groove (10) fixedly installed on the bracket handle (6), an electric push rod (11) is fixedly installed in the mounting groove (10), a lifting plate (12) is fixedly installed on the output shaft of the electric push rod (11), an upper connecting frame (13) is fixedly installed on the lifting plate (12), and an upper connecting rod (14) is rotatably installed on the upper connecting frame (13).
3. The targeted drug delivery device for nanoparticles according to claim 2, characterized in that: A sliding groove (15) is provided on the mounting plate (3). A sliding block (16) is slidably installed in the sliding groove (15). An upper mounting bracket (17) is fixedly installed on the upper end face of the sliding block (16). A lower mounting bracket (18) is fixedly installed on the lower end face of the sliding block (16). A lower connecting rod (19) is rotatably installed on the lower mounting bracket (18). A lower connecting bracket (20) is fixedly installed on the upper end face of the annular tube (7).
4. The targeted drug delivery device for nanoparticles according to claim 3, characterized in that: The annular tube (7) is slidably mounted on the outer side of the drug delivery tube (1). The end of the upper connecting rod (14) away from the upper connecting frame (13) is rotatably connected to the upper mounting frame (17). The end of the lower connecting rod (19) away from the lower mounting frame (18) is rotatably mounted on the lower connecting frame (20). Both the upper connecting rod (14) and the lower connecting rod (19) are arranged at an angle.
5. The targeted drug delivery device for nanoparticles according to claim 3, characterized in that: An L-shaped support rod (21) is fixedly installed on the outer side of the lifting plate (12), an installation ring (22) is slidably installed on the annular tube (7), a positioning ring (23) is rotatably installed on the installation ring (22), a vertical sliding groove (24) is opened on the outer side of the bracket handle (6), and the bottom end of the L-shaped support rod (21) is fixedly installed on the positioning ring (23).
6. The targeted drug delivery device for nanoparticles according to claim 5, characterized in that: The drive assembly includes a drive motor (25) fixedly mounted on the mounting plate (3), a drive screw (26) fixedly mounted on the output end of the drive motor (25), a drive screw hole (27) for cooperating with the drive screw (26) is opened in the drive cylinder (4), and a large sprocket (28) is fixedly mounted on the drive screw (26).
7. The targeted drug delivery device for nanoparticles according to claim 6, characterized in that: A stabilizing plate (29) is fixedly installed on the outer side of the mounting plate (3). A rotating vertical rod (30) is rotatably installed on the stabilizing plate (29). A small sprocket (31) is fixedly installed on the rotating vertical rod (30). A gear column (32) is fixedly installed at the bottom end of the rotating vertical rod (30). An annular tooth block assembly (33) is fixedly installed on the outer side of the mounting ring (22).
8. The targeted drug delivery device for nanoparticles according to claim 7, characterized in that: The large sprocket (28) is driven by a chain and the small sprocket (31), the gear column (32) meshes with the ring gear block group (33), and the drive screw (26) is movably installed with the drive screw hole (27).
9. A targeted drug delivery device for nanoparticles according to claim 7, characterized in that: The auxiliary components include a U-shaped frame plate (34) fixedly mounted on the mounting ring (22), a rotating horizontal shaft (35) rotatably mounted on the U-shaped frame plate (34), a pressure arc block (36) fixedly mounted on the inner side of the permanent magnet (9), and an arc-shaped protrusion (37) fixedly mounted on the outer side of the annular tube (7).
10. A targeted drug delivery device for nanoparticles according to claim 9, characterized in that: The permanent magnet (9) is fixedly installed on the rotating horizontal shaft (35), and the arc-shaped protrusion (37) slides in contact with the pressure arc block (36). There are multiple arc-shaped protrusions (37) and they are evenly distributed.