Mesenchymal stem cell exosome hand-held nebulizer

Abstract

The application belongs to the technical field of atomization inhalation equipment, and particularly relates to a mesenchymal stem cell exosome handheld atomization inhaler, which comprises a medicine liquid tank, an atomizer arranged on the top of the medicine liquid tank, a protection mechanism arranged on the outer wall of the atomizer, and a cleaning mechanism arranged on the bottom of the medicine liquid tank. The cleaning mechanism is arranged to clean the inner walls of the atomization cup and the extension cover. In the process of gradually moving the conical sleeve inward, the groove at the bottom of the conical sleeve covers the atomization nozzle, the cleaning needle is inserted into the atomization nozzle, the inside and outside of the atomization nozzle are cleaned, the residual medicine liquid on the surface of the atomization nozzle is adsorbed by the conical sleeve, crystallization caused by the drying of the medicine liquid is avoided, the atomization nozzle is prevented from being blocked, the atomization effect is prevented from being affected or the atomization nozzle is prevented from being damaged, the atomization nozzle and the atomization cup can be cleaned immediately after atomization by the user, the time of medicine liquid adhesion is reduced, and the atomization nozzle can be repeatedly used.

Description

Technical Field

[0001] This invention belongs to the technical field of nebulized inhalation equipment, specifically a handheld nebulized inhaler for mesenchymal stem cell exosomes. Background Technology

[0002] In clinical practice, mesenchymal stem cell exosomes have shown significant efficacy in treating respiratory diseases. However, inhalers that atomize mesenchymal stem cell exosomes require atomization. If the atomization speed is too fast, it can impair the inhalation of patients with respiratory diseases and reduce the effectiveness of the inhalation. Inhalers use masks that fit snugly against the face. Some of the stem cell exudates sprayed through the atomized spray can stick to the inside of the mask, leaving residues that can easily breed bacteria and affect the next use. Therefore, an inhaler with a slow-speed spray and easy cleaning is needed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a handheld nebulizer for mesenchymal stem cell exosomes, comprising: A medicine container, wherein an atomizer is provided on the top of the medicine container; A protective mechanism is installed on the outer wall of the atomizer; A cleaning mechanism is installed at the bottom of the liquid tank; The cleaning mechanism includes: An elastic ring is fitted onto the outer wall of the liquid medicine tank to install the conical sleeve onto the liquid medicine tank. An elastic rod, wherein the elastic rod is evenly distributed on the surface of the elastic ring; A conical sleeve, the inner wall of which is connected to the outer wall of the elastic rod, the outer wall of which is uniformly provided with strip grooves, and the bottom of which is provided with a groove. The conical sleeve is used to absorb and disinfect the atomized liquid on the inner wall of the protective mechanism. The conical sleeve is made of water-absorbing material.

[0004] Furthermore, this mesenchymal stem cell exosome handheld nebulizer also includes: The injection mechanism is installed on the outer wall of the medicine tank; A handheld component, the inner wall of which engages with the outer wall of the cleaning mechanism.

[0005] Furthermore, the cleaning mechanism also includes: Cleaning rods, which are evenly arranged on the outer wall of the conical sleeve; A circular shell, which is installed at the bottom of the liquid medicine tank; A stopper rod is disposed at the bottom of the inner wall of the conical sleeve, and the outer wall of the stopper rod is engaged with the inner wall of the circular shell.

[0006] Furthermore, the cleaning mechanism also includes: The winding rod has two ends rotatably connected to the inner wall of the circular shell. The drive inside the circular shell drives the winding rod to rotate, which facilitates the winding and storage of the connecting rope. A connecting rope, the bottom of which is connected to the top of the stopper rod, and the end of the connecting rope away from the stopper rod is threadedly wound with a winding rod; A cleaning needle is disposed at the bottom of the conical sleeve.

[0007] Furthermore, the protective mechanism includes: Atomizing cup, wherein the atomizing cup is installed on the outer wall of the atomizer; An atomizing nozzle is installed on the outer wall of the atomizer, the inner wall of the atomizing cup is fitted with the outer wall of the atomizing nozzle, and the cleaning needle is used to clean the nozzle orifice of the atomizing nozzle. An extension cover is symmetrically arranged on the outer wall of the atomizing cup. The inner wall of the extension cover is fitted into the outer wall of the atomizing cup. The edge of the extension cover is symmetrically provided with sliding grooves. The extension cover is used to increase the space of the atomizing cup.

[0008] Furthermore, the protective mechanism also includes: Connecting pieces are symmetrically arranged on the inner wall of the atomizing cup, and the connecting pieces are used to block the gap between the extension cover and the atomizing cup; The movable rod has two ends that are slidably connected to the outer wall of the extension cover, and the movable rod is made of rubber with low elasticity. A lever, which is mounted on the outer wall of the moving rod.

[0009] Furthermore, the injection mechanism includes: An annular shell, the inner wall of which is fitted into the outer wall of the medicine container; A slide rail is installed in the middle of the outer wall of the annular shell; An arc-shaped ring, the outer wall of which is slidably connected to the inner wall of the slide, is used to provide additional hand support for the user. The arc-shaped ring can hold the user's fingers and allow them to slide freely on the slide.

[0010] Furthermore, the injection mechanism also includes: A piston ring is disposed on the inner wall of an annular shell, and the outer wall of the piston ring is slidably connected to the inner wall of the annular shell. A connecting rod is evenly distributed on the top of the piston ring, and the outer wall of the connecting rod is sleeved with the inner wall of the annular shell.

[0011] Furthermore, the injection mechanism also includes: The injection tube is located on the upper part of the outer wall of the annular shell; A pressing ring is mounted on the top of the connecting rod; The liquid outlet pipes are evenly distributed at the bottom of the annular shell and are located above the conical sleeve.

[0012] Furthermore, the handheld component includes: The container has a retaining ring at its top, the outer wall of which is fitted into the outer wall of the conical sleeve. The bottom of the inner wall of the container has a protrusion, the position of which corresponds to the position of the groove.

[0013] The beneficial effects of this invention are as follows: 1. This invention utilizes a cleaning mechanism to clean the inner walls of the atomizing cup and the extension cover. As the conical sleeve gradually moves inward, the groove at the bottom of the sleeve covers the atomizing nozzle, allowing the cleaning needle to be inserted into the nozzle's interior. This cleans both the inside and outside of the nozzle, ensuring that any residual medication on the nozzle's surface is absorbed by the conical sleeve. This prevents the medication from drying and crystallizing, which could clog the nozzle, affecting atomization or damaging it. This allows users to clean the nozzle and atomizing cup immediately after atomization, reducing the time medication remains on the surface. The device is reusable; after use, the conical sleeve is cleaned and dried before being inserted into the housing. The protrusions on the inner wall of the housing hold the cleaning needle inside, preventing injury and keeping the needle clean. This also prevents external force from bending the needle and affecting the cleaning effect.

[0014] 2. This invention, by setting up a protective mechanism, covers the extension cover and the outer wall of the atomizing cup, making the extension cover more stable. Then, the liquid medicine atomized by the atomizing nozzle fills the atomizing cup. When the extension cover is opened, the gap between the connecting pieces ensures that it fits the user's face, preventing the atomized liquid medicine from leaking out and being wasted. At the same time, it can make the space for the atomized liquid medicine larger, thereby buffering the flow rate of the atomized liquid medicine and improving the user's comfort.

[0015] 3. By setting up a liquid injection mechanism, the present invention maintains negative pressure inside the annular shell, thereby preventing the disinfectant from flowing out of the annular shell. This eliminates the need for an additional power source, reduces the overall weight burden, and allows for the replacement and reuse of the liquid tank, making cleaning work more efficient and faster and reducing the time the disinfectant remains in the tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a schematic diagram of the protective mechanism of the present invention; Figure 4 This is a rear view of the protective mechanism of the present invention; Figure 5 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 6 This is a cross-sectional view of the cleaning mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the handheld component of the present invention; Figure 8 This is a schematic diagram of the liquid injection mechanism of the present invention.

[0017] In the diagram: 1. Liquid tank; 2. Nebulizer; 3. Protective mechanism; 301. Nebulizing cup; 302. Nebulizing nozzle; 303. Extension cover; 304. Connecting piece; 305. Moving rod; 306. Pulley; 307. Slide groove; 4. Injection mechanism; 401. Annular shell; 402. Slide rail; 403. Arc-shaped ring; 404. Injection pipe; 405. Piston ring; 406. Connecting rod; 407. 408. Pressing ring; 509. Dispensing tube; 5000. Cleaning mechanism; 501. Elastic ring; 502. Elastic rod; 503. Conical sleeve; 504. Cleaning rod; 505. Strip groove; 506. Plug rod; 507. Connecting rope; 508. Winding rod; 509. Groove; 510. Circular shell; 511. Cleaning needle; 602. Handheld part; 603. Holding shell; 604. Protrusion; 605. Retaining ring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] Example 1, please refer to Figures 1-6 The present invention provides a technical solution: a handheld nebulizer for mesenchymal stem cell exosomes, which is described below.

[0020] include: Medicine liquid container 1, with an atomizer 2 installed on the top of medicine liquid container 1; Protective mechanism 3 is installed on the outer wall of atomizer 2; Cleaning mechanism 5 is installed at the bottom of the liquid tank 1; The mesenchymal stem cell exosome handheld nebulizer also includes: Liquid injection mechanism 4 is installed on the outer wall of liquid tank 1; Handheld component 6, the inner wall of which is engaged with the outer wall of cleaning mechanism 5.

[0021] Initially, the user inserts the medicine container 1 filled with medicine into the injection mechanism 4, so that the injection mechanism 4 is installed on the outer wall of the medicine container 1. Then, the cleaning mechanism 5 is installed at the bottom of the medicine container 1. When using, the user uses the hand-held part 6 and the injection mechanism 4 to pick up the medicine container 1, so that the protective mechanism 3 is facing the face. Then, the user presses the atomizer 2 to fill the protective mechanism 3 with atomized medicine. After use, the user presses the injection mechanism 4 to inject disinfectant into the cleaning mechanism 5. The user then removes the cleaning mechanism 5 to clean and disinfect the inner wall of the protective mechanism 3, waiting for the next use. The injection mechanism 4 and the cleaning mechanism are detachable and reusable.

[0022] Protective mechanism 3 includes: Atomizing cup 301 is installed on the outer wall of atomizer 2; Atomizing nozzle 302 is installed on the outer wall of atomizer 2. The inner wall of atomizing cup 301 is fitted with the outer wall of atomizing nozzle 302. Cleaning needle 511 is used to clean the nozzle orifice of atomizing nozzle 302. An extension cover 303 is symmetrically arranged on the outer wall of the atomizing cup 301. The inner wall of the extension cover 303 is fitted with the outer wall of the atomizing cup 301. The edge of the extension cover 303 is symmetrically provided with a sliding groove 307. The extension cover 303 is used to increase the space of the atomizing cup 301.

[0023] Protective mechanism 3 also includes: Connecting piece 304 is symmetrically arranged on the inner wall of atomizing cup 301. Connecting piece 304 is used to block the gap between extension cover 303 and atomizing cup 301. The movable rod 305 has two ends that are slidably connected to the outer wall of the extension cover 303. The movable rod 305 is made of rubber with low elasticity. A lever 306 is installed on the outer wall of the moving rod 305.

[0024] In use, the user pulls the extension cover 303 outward as needed. Then, the user simultaneously moves the levers 306 on both sides to make the moving rod 305 lock in the gap of the extension cover 303, so that the extension cover 303 fits onto the outer wall of the atomizing cup 301, making the extension cover 303 more stable. Then, the liquid atomized by the atomizing nozzle 302 fills the atomizing cup 301. When the extension cover 303 is opened, the connecting piece 304 keeps the gap between them so that it can fit the user's face, preventing the liquid atomized from leaking out and causing waste. At the same time, it can make the space for the liquid atomized larger, thereby buffering the flow rate of the liquid atomized and improving the user's comfort.

[0025] Cleaning organization 5 includes: Elastic ring 501 is sleeved on the outer wall of medicine tank 1 and is used to install conical sleeve 503 on medicine tank 1. Elastic rods 502 are evenly distributed on the surface of elastic rings 501. The conical sleeve 503 has its inner wall connected to the outer wall of the elastic rod 502. The outer wall of the conical sleeve 503 is evenly provided with strip grooves 505, and the bottom of the conical sleeve 503 is provided with a groove 509. The conical sleeve 503 is used to absorb and disinfect the atomized liquid on the inner wall of the protective mechanism 3. The conical sleeve 503 is made of water-absorbing material.

[0026] Cleaning agency 5 also includes: Cleaning rods 504 are evenly distributed on the outer wall of the conical sleeve 503; A circular shell 510 is installed at the bottom of the liquid tank 1, and the circular shell 510 has a built-in drive. A stopper rod 506 is located at the bottom of the inner wall of the conical sleeve 503, and the outer wall of the stopper rod 506 is engaged with the inner wall of the circular shell 510.

[0027] Cleaning agency 5 also includes: The winding rod 508 has two ends that are rotatably connected to the inner wall of the circular shell 510. The drive inside the circular shell 510 drives the winding rod 508 to rotate, which facilitates the winding and storage of the connecting rope 507. The connecting rope 507 is connected at its bottom to the top of the stopper rod 506, and the end of the connecting rope 507 away from the stopper rod 506 is threadedly wound with the winding rod 508. The cleaning needle 511 is located at the bottom of the conical sleeve 503 and is used to clean the atomizing nozzle 302.

[0028] Handheld component 6 includes: The container 601 has a retaining ring 603 on its top. The outer wall of the retaining ring 603 is fitted with the outer wall of the conical sleeve 503. The bottom of the inner wall of the container 601 has a protrusion 602, and the position of the protrusion 602 corresponds to the position of the groove 509.

[0029] After use, the user wets the surface of the conical sleeve 503 using the liquid injection mechanism 4, so that the disinfectant is spread all over the surface of the conical sleeve 503. Then the user manually removes the conical sleeve 503 from the circular shell 510, moves the plug rod 506 away from the circular shell 510, inserts the conical sleeve 503 into the atomizing cup 301, and rotates it. Since the surface of the conical sleeve 503 has a strip groove 505, the conical sleeve 503 can be unfolded under the action of the elastic rod 502, so that it fits more closely to the inner wall of the atomizing cup 301. After contacting the inner wall of the atomizing cup 301, the conical sleeve 503 is pressed against the inner wall of the atomizing cup 301 by the squeezing force of the user; then the user rotates the conical sleeve 503 so that the cleaning rod 504 on the surface of the conical sleeve 503 cleans the inner wall of the atomizing cup 301 and the extension sleeve 303. As the conical sleeve 503 gradually moves inward, the groove 509 at the bottom of the conical sleeve 503 covers the atomizing nozzle 302, allowing the cleaning needle 511 to be inserted into the interior of the atomizing nozzle 302. This cleans the inside and outside of the atomizing nozzle 302, allowing the conical sleeve 503 to absorb any residual medication on the surface of the atomizing nozzle 302, preventing the medication from drying and crystallizing, which could clog the atomizing nozzle 302, affect the atomization effect, or damage the atomizing nozzle 302. This allows users to clean the atomizing nozzle 302 and atomizing cup 301 immediately after atomization, reducing the time the medication adheres. It is also reusable. After use, the conical sleeve 503 is cleaned and dried before being inserted into the holding shell 601. The protrusion 602 on the inner wall of the holding shell 601 holds the cleaning needle 511 inside, preventing the cleaning needle 511 from pricking the user, keeping the surface of the cleaning needle 511 clean, and preventing external force from bending the cleaning needle 511, which would affect the cleaning effect.

[0030] Example 2, please refer to Figures 1-8 The present invention provides a technical solution: based on embodiment 1, the liquid injection mechanism 4 includes: The annular shell 401 has its inner wall fitted into the outer wall of the liquid tank 1. The interior of the annular shell 401 is filled with disinfectant, which can be used for one or two cleanings. Slide 402 is installed in the middle of the outer wall of the annular shell 401; The outer wall of the arc-shaped ring 403 is slidably connected to the inner wall of the slide 402. The arc-shaped ring 403 is used to provide additional hand support for the user. The arc-shaped ring 403 can hold the user's fingers and slide freely on the slide 402.

[0031] The injection mechanism 4 also includes: Piston ring 405 is disposed on the inner wall of annular shell 401, and the outer wall of piston ring 405 is slidably connected to the inner wall of annular shell 401. Connecting rods 406 are evenly distributed on the top of piston rings 405, and the outer wall of connecting rods 406 is sleeved with the inner wall of annular shell 401.

[0032] The injection mechanism 4 also includes: The injection tube 404 is located on the upper part of the outer wall of the annular shell 401, which facilitates the injection of disinfectant and allows the cleaning mechanism 5 to be reused. Press ring 407 is installed on top of connecting rod 406; The outlet pipe 408 is evenly arranged at the bottom of the annular shell 401. The outlet pipe 408 is located above the conical sleeve 503 and its shape expands outward. It first contacts the part with the largest diameter of the conical sleeve 503 so that the disinfectant can cover the surface of the conical sleeve 503. When not in use, the bottom of the outlet pipe 408 is blocked.

[0033] After atomization, the user presses down on the pressing ring 407, causing it to drive the piston ring 405, squeezing the disinfectant out of the annular shell 401 and allowing it to flow from the outlet pipe 408 into the conical sleeve 503. When the disinfectant in the annular shell 401 is used up, the user pulls the pressing ring 407 to its highest position, and then injects disinfectant into the annular shell 401 through the injection pipe 404. The annular shell 401 is made of transparent acrylic material, and the user observes that the disinfectant level is lower than the injection level. When the injection stops at pipe 404, the bottom of the outlet pipe 408 is blocked, and then the pressing ring 407 is lowered to expel air from the injection pipe 404 until the piston ring 405 blocks the opening of the injection pipe 404, so that the annular shell 401 is kept under negative pressure. This prevents the disinfectant from flowing out of the annular shell 401, eliminating the need for an additional power source and reducing the overall weight burden. At the same time, the liquid tank 1 can be replaced and reused, making the cleaning work more efficient and faster and reducing the time the liquid stays in the tank.

[0034] The specific workflow is as follows: Initially, the user inserts the medicine container 1 filled with liquid into the injection mechanism 4, so that the injection mechanism 4 is installed on the outer wall of the medicine container 1. Then, the cleaning mechanism 5 is installed at the bottom of the medicine container 1. When in use, the user uses the hand-held part 6 and the injection mechanism 4 to pick up the medicine container 1. According to the user's needs, the extension cover 303 is pulled outward. Then, the user simultaneously moves the levers 306 on both sides, so that the moving rod 305 is locked in the gap of the extension cover 303, so that the extension cover 303 is fitted with the outer wall of the atomizing cup 301, making the extension cover 303 more stable. Then, the liquid atomized by the atomizing nozzle 302 fills the atomizing cup 301. When the extension cover 303 is opened, the connecting piece 304 keeps the gap between them so that it can fit the user's face, preventing the atomized liquid from leaking out and causing waste. After use, the user presses down on the pressing ring 407, causing the pressing ring 407 to drive the piston ring 405, squeezing out the disinfectant from the annular shell 401 and flowing from the outlet tube 408 into the conical sleeve 503. After use, the user uses the injection mechanism 4 to wet the surface of the conical sleeve 503, so that the disinfectant covers the surface of the conical sleeve 503. Then, the user manually removes the conical sleeve 503 from the circular shell 510, moves the stopper rod 506 away from the circular shell 510, inserts the conical sleeve 503 into the atomizing cup 301, and rotates it. Since the surface of the conical sleeve 503 has a strip groove 505, the conical sleeve 503 can be unfolded under the action of the elastic rod 502. After contacting the inner wall of the atomizing cup 301, it is squeezed by the user, so that the surface of the conical sleeve 503 fits against the inner wall of the atomizing cup 301. The user then rotates the conical sleeve 503, causing the cleaning rod 504 on the surface of the conical sleeve 503 to clean the inner walls of the atomizing cup 301 and the extension cover 303. As the conical sleeve 503 gradually moves inward, the groove 509 at the bottom of the conical sleeve 503 covers the atomizing nozzle 302, allowing the cleaning needle 511 to be inserted into the interior of the atomizing nozzle 302 to clean the inside and outside of the atomizing nozzle 302. When the disinfectant in the annular shell 401 is used up, the user pulls the hidden pressing ring 407 to the highest position, and then injects the disinfectant into the annular shell 401 through the injection tube 404. The annular shell 401 is made of transparent acrylic material. The user stops injecting when the level of the disinfectant is lower than the injection tube 404. At this time, the bottom of the outlet tube 408 is blocked, and then the pressing ring 407 is turned down to expel air from the injection tube 404 until the piston ring 405 blocks the opening of the injection tube 404, so that the annular shell 401 is kept under negative pressure, thereby preventing the disinfectant from flowing out of the annular shell 401.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A handheld nebulizer for mesenchymal stem cell exosomes, comprising: The medicine liquid tank (1) is characterized in that: an atomizer (2) is provided on the top of the medicine liquid tank (1); Protective mechanism (3), said protective mechanism (3) is installed on the outer wall of atomizer (2); A cleaning mechanism (5) is installed at the bottom of the liquid tank (1); The cleaning mechanism (5) includes: An elastic ring (501) is fitted onto the outer wall of the liquid tank (1); Elastic rods (502) are uniformly disposed on the surface of elastic rings (501); A conical sleeve (503) is provided, the inner wall of which is connected to the outer wall of the elastic rod (502). The outer wall of the conical sleeve (503) is uniformly provided with strip grooves (505). The bottom of the conical sleeve (503) is provided with a groove (509). The conical sleeve (503) is used to adsorb and disinfect the atomized liquid on the inner wall of the protective mechanism (3). The mesenchymal stem cell exosome handheld nebulizer also includes: The liquid injection mechanism (4) is installed on the outer wall of the liquid tank (1); Handheld component (6), the inner wall of which is engaged with the outer wall of the cleaning mechanism (5); The cleaning mechanism (5) also includes: Cleaning rods (504) are evenly distributed on the outer wall of the conical sleeve (503); A circular shell (510) is installed at the bottom of the liquid medicine tank (1); A stopper rod (506) is disposed at the bottom of the inner wall of the conical sleeve (503), and the outer wall of the stopper rod (506) is engaged with the inner wall of the circular shell (510). The cleaning mechanism (5) also includes: A winding rod (508) is rotatably connected at both ends to the inner wall of a circular shell (510); A connecting rope (507) is provided, the bottom of which is connected to the top of the stopper rod (506), and the end of the connecting rope (507) away from the stopper rod (506) is threadedly wound with a winding rod (508). A cleaning needle (511) is disposed at the bottom of the conical sleeve (503); The protective mechanism (3) includes: Atomizing cup (301), said atomizing cup (301) is installed on the outer wall of atomizer (2); Atomizing nozzle (302) is installed on the outer wall of atomizer (2). The inner wall of atomizing cup (301) is sleeved with the outer wall of atomizing nozzle (302). The cleaning needle (511) is used to clean the nozzle orifice of atomizing nozzle (302). An extension cover (303) is symmetrically arranged on the outer wall of the atomizing cup (301). The inner wall of the extension cover (303) is fitted with the outer wall of the atomizing cup (301). The edge of the extension cover (303) is symmetrically provided with a sliding groove (307). The extension cover (303) is used to increase the space of the atomizing cup (301). The injection mechanism (4) includes: An annular shell (401) is fitted with the outer wall of the liquid medicine tank (1); A slide rail (402) is installed in the middle of the outer wall of the annular shell (401); An arc-shaped ring (403) has its outer wall slidably connected to the inner wall of a slide rail (402). The arc-shaped ring (403) is used to provide additional hand support for the user. The liquid injection mechanism (4) further includes: Piston ring (405), the piston ring (405) is disposed on the inner wall of the annular shell (401), and the outer wall of the piston ring (405) is slidably connected to the inner wall of the annular shell (401); Connecting rod (406), the connecting rod (406) is evenly arranged on the top of piston ring (405), and the outer wall of the connecting rod (406) is sleeved with the inner wall of the annular shell (401); The injection mechanism (4) further includes: The injection tube (404) is located on the upper part of the outer wall of the annular shell (401); Pressing ring (407), said pressing ring (407) is mounted on top of connecting rod (406); The liquid outlet pipe (408) is evenly arranged at the bottom of the annular shell (401) and is located above the conical sleeve (503).

2. The mesenchymal stem cell exosome handheld nebulizer according to claim 1, characterized in that: The protective mechanism (3) also includes: A connecting piece (304) is symmetrically arranged on the inner wall of the atomizing cup (301). The connecting piece (304) is used to block the gap between the extension cover (303) and the atomizing cup (301). A movable rod (305) has its two ends slidably connected to the outer wall of the extension cover (303); A lever (306) is mounted on the outer wall of the movable rod (305).

3. The mesenchymal stem cell exosome handheld nebulizer according to claim 1, characterized in that: The handheld component (6) includes: The container (601) has a retaining ring (603) on its top. The inner wall of the retaining ring (603) is fitted with the outer wall of the conical sleeve (503). The bottom of the inner wall of the container (601) has a protrusion (602) that corresponds to the position of the groove (509).

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