Mesenchymal stem cell exosome handheld atomization inhaler

Abstract

The invention belongs to the technical field of aerosol inhalation equipment, and particularly relates to a mesenchymal stem cell exosome handheld aerosol inhaler, which comprises a liquid medicine tank, an atomizer arranged at the top of the liquid medicine tank; the protection mechanism is mounted on the outer wall of the atomizer; the cleaning mechanism is mounted at the bottom of the liquid medicine tank, and the cleaning mechanism is arranged to clean the inner wall of the atomizing cup and the inner wall of the extension cover; in the process that the conical sleeve gradually approaches inwards, the atomization nozzle is sleeved with the groove in the bottom of the conical sleeve, the cleaning needle is inserted into the atomization nozzle to clean the interior and exterior of the atomization nozzle, residual liquid medicine on the surface of the atomization nozzle is adsorbed by the conical sleeve, and the situation that the atomization nozzle is blocked due to the fact that the liquid medicine is dried and crystallized is avoided; the atomization effect is affected or the atomization nozzle is damaged, a user can conveniently and immediately clean the atomization nozzle and the atomization cup after atomization is finished, the time for attaching liquid medicine is shortened, and the device can be repeatedly used.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of atomization inhalation equipment, in particular to a mesenchymal stem cell exosome handheld atomization inhaler. BACKGROUND

[0002] The use of mesenchymal stem cell exosomes in the treatment of respiratory diseases has significant efficacy, and the inhaler for inhaling mesenchymal stem cell exosomes by atomization will affect the inhalation of patients with respiratory diseases if the speed of spraying is too fast, which will affect the inhalation effect. The inhaler uses a mask to fit the face, and the atomized stem cell exosomes will partially adhere to the inside of the mask, which will easily breed bacteria and affect the next use, so it needs to be easy to clean, and therefore a slow-spraying and easy-to-clean inhaler is needed. SUMMARY

[0003] In view of the deficiencies of the prior art, the technical scheme adopted by the application to solve the technical problems is: a mesenchymal stem cell exosome handheld atomization inhaler, comprising: A medicine tank is provided with an atomizer at the top; A protection mechanism is installed on the outer wall of the atomizer; A cleaning mechanism is installed at the bottom of the medicine tank; The cleaning mechanism comprises: An elastic ring is sleeved on the outer wall of the medicine tank for installing the conical sleeve on the medicine tank; Elastic rods are uniformly arranged on the surface of the elastic ring; The inner wall of the conical sleeve is connected with the outer wall of the elastic rod, the outer wall of the conical sleeve is uniformly provided with a strip-shaped groove, and the bottom of the conical sleeve is provided with a groove. The conical sleeve is used for adsorbing and disinfecting the atomized medicine liquid on the inner wall of the protection mechanism, and the conical sleeve is made of water-absorbing material.

[0004] Further, the mesenchymal stem cell exosome handheld atomization inhaler further comprises: A liquid injection mechanism is installed on the outer wall of the medicine tank; A handheld component is connected with the outer wall of the cleaning mechanism.

[0005] Further, the cleaning mechanism further comprises: A cleaning rod is uniformly arranged on the outer wall of the conical sleeve; A circular shell is installed at the bottom of the medicine tank; A plug rod is arranged at the bottom of the inner wall of the conical sleeve, and the outer wall of the plug rod is connected with the inner wall of the circular shell.

[0006] Further, the cleaning mechanism further comprises: The winding rod is rotationally connected to the inner wall of the circular shell, and a driving belt built in the circular shell drives the winding rod to rotate, facilitating the winding and storage of the connecting rope. The connecting rope is connected to the top of the plug rod at the bottom, and the end of the connecting rope away from the plug rod is threadedly wound on the winding rod. The cleaning needle is arranged at the bottom of the conical sleeve.

[0007] Further, the protection mechanism comprises: The atomizing cup is installed on the outer wall of the atomizer. The atomizing nozzle is installed on the outer wall of the atomizer, the inner wall of the atomizing cup is sleeved with the outer wall of the atomizing nozzle, and the cleaning needle is used to clean the spray hole of the atomizing nozzle. The extension cover is symmetrically arranged on the outer wall of the atomizing cup, the inner wall of the extension cover is sleeved with the outer wall of the atomizing cup, and the edges of the extension cover are symmetrically provided with sliding grooves, and the extension cover is used to increase the space of the atomizing cup.

[0008] Further, the protection mechanism further comprises: The connecting piece is symmetrically arranged on the inner wall of the atomizing cup, and the connecting piece is used to block the gap between the extension cover and the atomizing cup. The moving rod is slidably connected to the outer wall of the extension cover, and the moving rod is made of rubber with small elasticity. The push block is installed on the outer wall of the moving rod.

[0009] Further, the liquid injection mechanism comprises: The annular shell is sleeved with the outer wall of the liquid tank. The sliding channel is installed on the middle part of the outer wall of the annular shell. The arc-shaped ring is slidably connected to the inner wall of the sliding channel, and the arc-shaped ring is used to provide additional hand support for the user, and the arc-shaped ring can cover the user's fingers and freely slide on the sliding channel.

[0010] Further, the liquid injection mechanism further comprises: The piston ring is arranged on the inner wall of the annular shell, and the outer wall of the piston ring is slidably connected to the inner wall of the arc-shaped shell. The connecting rod is uniformly arranged 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] Further, the liquid injection mechanism further comprises: The liquid injection pipe is arranged at an upper position of the outer wall of the annular shell; The pressing ring is installed at the top of the connecting rod; The liquid outlet pipe is uniformly arranged at the bottom of the annular shell and is located above the conical sleeve.

[0012] Further, the handheld component comprises: The top of the containing shell is provided with a retaining ring, the outer wall of the retaining ring is sleeved with the outer wall of the conical shell, and the inner wall of the containing shell is provided with a protrusion at the bottom.

[0013] The beneficial effects of the present application are as follows: 1. The cleaning mechanism is arranged to clean the inner walls of the atomizing cup and the extension cover; during the gradual inward approach of the conical sleeve, the groove at the bottom of the conical sleeve covers the atomizing nozzle, the cleaning needle is inserted into the interior of the atomizing nozzle, the interior and exterior of the atomizing nozzle are cleaned, the residual liquid on the surface of the atomizing nozzle is adsorbed by the conical sleeve, the liquid is prevented from drying and crystallizing, the atomizing nozzle is prevented from being blocked, the atomizing effect is affected or the atomizing nozzle is damaged, the user can immediately clean the atomizing nozzle and the atomizing cup after atomization, the time of liquid adhesion is reduced, the cleaning needle can be repeatedly used, after use, the conical sleeve is cleaned and dried, is inserted into the containing shell, the protrusion of the inner wall of the containing shell stores the cleaning needle in the interior, the cleaning needle is prevented from injuring the user, the surface of the cleaning needle is kept clean, external force is prevented from causing the cleaning needle to bend and affecting the cleaning effect.

[0014] 2. The protective mechanism is arranged to cover the outer walls of the extension cover and the atomizing cup, the extension cover is placed more stably, the liquid atomized by the atomizing nozzle fills the atomizing cup, the gap between the extension covers is kept when the extension covers are opened to the user's face, the atomized liquid is prevented from leaking and causing waste, the space of the atomized liquid is larger, the flow rate of the atomized liquid is buffered, and the user's use comfort is improved.

[0015] 3. The liquid injection mechanism is arranged to keep the annular shell in negative pressure, so that the disinfectant liquid does not flow out of the annular shell, an additional power source is not needed, the total weight burden is reduced, the liquid tank can be replaced, the cleaning work is more efficient and rapid, and the time of liquid staying is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a rear view of the present application; Figure 3 is a structural schematic diagram of the protective mechanism of the present application; Figure 4 is a rear view of the protection mechanism of the present application; Figure 5 is a structural schematic view of the cleaning mechanism of the present application; Figure 6 is a sectional view of the cleaning mechanism of the present application; Figure 7 is a structural schematic view of the handheld component of the present application; Figure 8 is a structural schematic view of the liquid injection mechanism of the present application.

[0017] In the figure: 1, liquid tank; 2, atomizer; 3, protection mechanism; 301, atomizing cup; 302, atomizing nozzle; 303, extension cover; 304, connecting piece; 305, moving rod; 306, shifting block; 307, sliding groove; 4, liquid injection mechanism; 401, annular shell; 402, sliding channel; 403, arc-shaped ring; 404, liquid injection pipe; 405, piston ring; 406, connecting rod; 407, pressing ring; 408, liquid outlet pipe; 5, cleaning mechanism; 501, elastic ring; 502, elastic rod; 503, conical sleeve; 504, cleaning rod; 505, strip-shaped groove; 506, plug rod; 507, connecting rope; 508, winding rod; 509, groove; 510, circular shell; 511, cleaning needle; 6, handheld component; 601, containing shell; 602, protrusion; 603, blocking ring. DETAILED DESCRIPTION

[0018] The present application will be further described in conjunction with the drawings and specific embodiments. The embodiments of the present application are given for illustration and description only, and are not intended to be exhaustive or to limit the present application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application for various embodiments with various modifications as are suited to the particular use contemplated.

[0019] Embodiment 1, please refer to Figures 1-6 The present application provides a technical solution: a mesenchymal stem cell exosome handheld type inhaler is described as follows.

[0020] It comprises: A liquid tank 1 is provided with an atomizer 2 at the top of the liquid tank 1; A protection mechanism 3 is installed on the outer wall of the atomizer 2; A cleaning mechanism 5 is installed at the bottom of the liquid tank 1; The mesenchymal stem cell exosome handheld type inhaler further comprises: A liquid injection mechanism 4 is installed on the outer wall of the liquid tank 1; The handheld part 6 is clamped with the inner wall of the handheld part 6 and the outer wall of the cleaning mechanism 5.

[0021] At the beginning, the user inserts the medicine liquid tank 1 full of medicine liquid into the liquid injection mechanism 4, and then installs the liquid injection mechanism 4 on the outer wall of the medicine liquid tank 1, and then installs the cleaning mechanism 5 on the bottom of the medicine liquid tank 1. When using, the user holds the medicine liquid tank 1 by the handheld part 6 and the liquid injection mechanism 4, and then aligns the protective mechanism 3 with the face, and then presses the atomizer 2, so that the protective mechanism 3 is filled with atomized medicine liquid. After use, the user presses the liquid injection mechanism 4 to inject the disinfectant into the cleaning mechanism 5, and then removes the cleaning mechanism 5 to clean and disinfect the inner wall of the protective mechanism 3. The liquid injection mechanism 4 and the cleaning mechanism can be repeatedly used.

[0022] The protective mechanism 3 comprises: The atomizing cup 301 is installed on the outer wall of the atomizer 2. The atomizing nozzle 302 is installed on the outer wall of the atomizer 2, the inner wall of the atomizing cup 301 is sleeved with the outer wall of the atomizing nozzle 302, and the cleaning needle 511 is used to clean the spray hole of the atomizing nozzle 302. The extension cover 303 is symmetrically arranged on the outer wall of the atomizing cup 301, the inner wall of the extension cover 303 is sleeved with the outer wall of the atomizing cup 301, and the edges of the extension cover 303 are symmetrically provided with sliding grooves 307. The extension cover 303 is used to increase the space of the atomizing cup 301.

[0023] The protective mechanism 3 further comprises: The connecting piece 304 is symmetrically arranged on the inner wall of the atomizing cup 301, and the connecting piece 304 is used to block the gap between the extension cover 303 and the atomizing cup 301. The moving rod 305 is slidably connected with the outer wall of the extension cover 303 at both ends, and the moving rod 305 is made of rubber material with small elasticity. The pushing block 306 is installed on the outer wall of the moving rod 305.

[0024] In use, according to the needs of the user, the extension cover 303 is pulled out, and then the user simultaneously pushes the two pushing blocks 306, so that the moving rod 305 is clamped at the gap of the extension cover 303, the extension cover 303 is sleeved with the outer wall of the atomizing cup 301, the extension cover 303 is placed more stably, and then the atomized medicine liquid in the atomizing cup 301 is filled through the atomizing nozzle 302. When the extension cover 303 is opened, the connecting piece 304 keeps the gap apart, which can be attached to the face of the user, so as to avoid the waste caused by the leakage of the atomized medicine liquid, and the space of the atomized medicine liquid is larger, so that the flow rate of the atomized medicine liquid is buffered, and the use comfort of the user is improved.

[0025] The cleaning mechanism 5 comprises: The elastic ring 501 is sleeved on the outer wall of the liquid tank 1, and is used for mounting the conical sleeve 503 on the liquid tank 1; The elastic rod 502 is uniformly arranged on the surface of the elastic ring 501; The conical sleeve 503 is connected with the outer wall of the elastic rod 502, the outer wall of the conical sleeve 503 is uniformly provided with a strip-shaped groove 505, and the bottom of the conical sleeve 503 is provided with a groove 509. The conical sleeve 503 is used for adsorbing and disinfecting the atomized liquid on the inner wall of the protection mechanism 3, and is made of a water-absorbing material.

[0026] The cleaning mechanism 5 further comprises: The cleaning rod 504 is uniformly arranged on the outer wall of the conical sleeve 503; The circular shell 510 is installed at the bottom of the liquid tank 1, and the circular shell 510 is internally provided with a drive; The plug rod 506 is arranged at the bottom of the inner wall of the conical sleeve 503, and the outer wall of the plug rod 506 is clamped with the inner wall of the circular shell 510.

[0027] The cleaning mechanism 5 further comprises: The winding rod 508 is rotationally connected with the inner wall of the circular shell 510 at both ends, and the drive internally provided in the circular shell 510 drives the rotation of the winding rod 508, so that the connecting rope 507 can be conveniently rolled up and stored; The connecting rope 507 is connected with the top of the plug rod 506 at the bottom, and the end of the connecting rope 507 away from the plug rod 506 is threadedly wound with the winding rod 508; The cleaning needle 511 is arranged at the bottom of the conical sleeve 503, and is used for cleaning the atomizing nozzle 302.

[0028] The handheld component 6 comprises: The containing shell 601 is provided with a blocking ring 603 at the top, the outer wall of the blocking ring 603 is sleeved with the outer wall of the conical shell, and the inner wall of the containing shell 601 is provided with a protrusion 602 at the bottom, the position of the protrusion 602 corresponds to the position of the groove 509.

[0029] After use, the user uses the liquid injection mechanism 4 to wet the surface of the conical sleeve 503, so that the disinfectant liquid covers 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. Since the surface of the conical sleeve 503 is provided with a strip-shaped groove 505, the conical sleeve 503 can be expanded under the driving of the elastic rod 502, so as to be more closely attached to the inner wall of the atomizing cup 301; After being in contact with the inner wall of the atomizing cup 301, the extrusion force caused by the user makes the surface of the conical sleeve 503 fit the inner wall of the atomizing cup 301; 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 cover 303; In the process of the conical sleeve 503 gradually moving inward, the groove 509 at the bottom of the conical sleeve 503 covers the atomizing nozzle 302, so that the cleaning needle 511 is inserted into the inside of the atomizing nozzle 302 to clean the inside and outside of the atomizing nozzle 302, so that the residual liquid on the surface of the atomizing nozzle 302 is adsorbed by the conical sleeve 503, avoiding the drying of the liquid to cause crystallization, resulting in the atomizing nozzle 302 being blocked, affecting the atomizing effect or damaging the atomizing nozzle 302, facilitating the user to clean the atomizing nozzle 302 and the atomizing cup 301 immediately after the atomization, reducing the time of liquid adhesion, and being reusable, after use, the conical sleeve 503 is cleaned and dried, and then is inserted into the storage shell 601, so that the protrusion 602 on the inner wall of the storage shell 601 stores the cleaning needle 511 inside, avoiding the cleaning needle 511 from hurting the user, keeping the surface of the cleaning needle 511 clean, and avoiding external force from causing the cleaning needle 511 to be bent, affecting the cleaning effect.

[0030] Embodiment 2, please refer to Figures 1-8 The present application provides a technical solution: on the basis of embodiment 1, the liquid injection mechanism 4 comprises: The annular shell 401 is sleeved with the outer wall of the liquid tank 1, and the inside of the annular shell 401 is provided with disinfectant liquid for one to two times of cleaning; The slide 402 is installed on the middle part of the outer wall of the annular shell 401; The arc ring 403 is slidably connected with the inner wall of the slide 402, and the arc ring 403 is used for providing additional hand support for the user, and the arc ring 403 can cover the fingers of the user and freely slide on the slide 402.

[0031] The liquid injection mechanism 4 further comprises: The piston ring 405 is arranged on the inner wall of the annular shell 401, and the outer wall of the piston ring 405 is slidably connected with the inner wall of the arc shell; The connecting rod 406 is uniformly arranged on the top of the piston ring 405, and the outer wall of the connecting rod 406 is sleeved with the inner wall of the annular shell 401.

[0032] The liquid injection mechanism 4 further comprises: The liquid injection pipe 404 is arranged on the upper part of the outer wall of the annular shell 401, so as to facilitate the injection of disinfectant liquid, and the cleaning mechanism 5 can be repeatedly used; The pressing ring 407 is installed on the top of the connecting rod 406; Liquid outlet pipe 408, liquid outlet pipe 408 is uniformly arranged at the bottom of annular shell 401, liquid outlet pipe 408 is located above the conical sleeve 503, and the shape of liquid outlet pipe 408 expands outward, first contacts the largest diameter part of the conical sleeve 503, so that the disinfectant can cover the surface of the conical sleeve 503, and the bottom of the liquid outlet pipe 408 is blocked when not in use.

[0033] After the atomization is finished, the user presses the pressing ring 407 downward, so that the pressing ring 407 drives the piston ring 405 to squeeze out the disinfectant in the annular shell 401, and the disinfectant flows into the conical sleeve 503 from the liquid outlet pipe 408. When the disinfectant in the annular shell 401 is used up, the user lifts the pressing ring 407 to the highest position, and then injects disinfectant into the annular shell 401 from the liquid injection pipe 404. The annular shell 401 is made of transparent acrylic material, and the user stops injecting when the disinfectant surface is lower than the liquid injection pipe 404. At this time, the bottom of the liquid outlet pipe 408 is blocked, and then the pressing ring 407 is pressed downward to exhaust air from the liquid injection pipe 404 until the piston ring 405 blocks the caliber of the liquid injection pipe 404, so that the annular shell 401 maintains negative pressure, so that the disinfectant can not flow out of the annular shell 401, without additional power source, reducing the total weight burden, and the medicine tank 1 can be replaced, which can be reused, making the cleaning work more efficient and rapid, reducing the time of the medicine.

[0034] The specific working process is as follows: Initially, the user inserts the medicine tank 1 full of medicine into the liquid injection mechanism 4, so that the liquid injection mechanism 4 is installed on the outer wall of the medicine tank 1, and then the cleaning mechanism 5 is installed at the bottom of the medicine tank 1. When in use, the user holds the hand-held part 6 and the liquid injection mechanism 4 to hold the medicine tank 1, according to the needs of the user, pulls out the extension cover 303, then the user simultaneously drives the two side blocks 306, so that the moving rod 305 is clamped in the gap of the extension cover 303, the extension cover 303 is sleeved on the outer wall of the atomization cup 301, the extension cover 303 is placed more stably, and then the medicine atomized by the atomization nozzle 302 fills the atomization cup 301. The connecting piece 304 keeps the gap apart when the extension cover 303 is opened, which can be attached to the face of the user to avoid waste caused by leakage of atomized medicine; After use, the user presses the pressing ring 407 downward, and the pressing ring 407 drives the piston ring 405 to squeeze the disinfectant in the annular shell 401 out of the liquid outlet pipe 408 into the conical sleeve 503. After use, the user uses the liquid injection mechanism 4 to wet the surface of the conical sleeve 503, so that the disinfectant spreads on the surface of the conical sleeve 503. Then the user manually removes the conical sleeve 503 from the circular shell 510, so that the plug rod 506 is away from the circular shell 510, and the conical sleeve 503 is inserted into the atomizing cup 301 and rotated. Because the surface of the conical sleeve 503 is provided with the strip-shaped groove 505, the conical sleeve 503 can be unfolded under the driving of the elastic rod 502, and after being in contact with the inner wall of the atomizing cup 301, the conical sleeve 503 is pressed by the user to be fitted with the inner wall of the atomizing cup 301; 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 cover 303. In the process of the conical sleeve 503 gradually moving inward, the recess 509 at the bottom of the conical sleeve 503 covers the atomizing nozzle 302, so that the cleaning needle 511 is inserted into 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 lifts the hidden pressing ring 407 to the highest position, and then injects the disinfectant into the annular shell 401 from the liquid injection pipe 404. The annular shell 401 is made of transparent acrylic material. The user stops injecting when the disinfectant surface is lower than the liquid injection pipe 404. At this time, the bottom of the liquid outlet pipe 408 is stopped, and then the pressing ring 407 is pressed downward to exhaust the air from the liquid injection pipe 404 until the piston ring 405 blocks the caliber of the liquid injection pipe 404, so that the annular shell 401 maintains negative pressure, so that the disinfectant can not flow out of the annular shell 401.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the 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).

2. The handheld nebulizer for mesenchymal stem cell exosomes according to claim 1, characterized in that: 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); The handheld component (6) has its inner wall engaged with the outer wall of the cleaning mechanism (5).

3. The handheld nebulizer for mesenchymal stem cell exosomes according to claim 1, characterized in that: 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).

4. The handheld nebulizer for mesenchymal stem cell exosomes according to claim 3, characterized in that: 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). Cleaning needle (511) is disposed at the bottom of conical sleeve (503).

5. The handheld nebulizer for mesenchymal stem cell exosomes according to claim 4, characterized in that: 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).

6. The mesenchymal stem cell exosome handheld nebulizer according to claim 5, 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).

7. The handheld nebulizer for mesenchymal stem cell exosomes according to claim 2, characterized in that: 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.

8. The mesenchymal stem cell exosome handheld nebulizer according to claim 7, characterized in that: 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 arc-shaped shell; Connecting rod (406) is evenly arranged on the top of piston ring (405), and the outer wall of connecting rod (406) is sleeved with the inner wall of annular shell (401).

9. The mesenchymal stem cell exosome handheld nebulizer according to claim 8, characterized in that: The liquid 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).

10. The handheld nebulizer for mesenchymal stem cell exosomes according to claim 2, characterized in that: The 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 shell. 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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