Nasal spray delivery device

Abstract

The invention provides a nasal spray delivery device in order to solve the problems that an air inlet of a nasal spray delivery device is generally of an open structure, an inner cavity of a shell of the nasal spray delivery device is introduced into the atmosphere, the inner cavity of the shell is prone to being polluted, pollutants enter a human body through a nasal cavity when a medicament is used, and the health of the human body is damaged. On the basis of an existing nasal spray delivery device, a valve assembly is arranged at the tail end of an air inlet, in the operation process, a nozzle is arranged in the nasal cavity of a user, the air inlet is arranged in a mouth socket of the user, when the user does not use the nasal spray delivery device, the valve assembly is in a closed state, and when the user uses the nasal spray delivery device, the valve assembly is in a closed state. The medicine tank is pushed into the upper portion in the shell, the valve assembly is opened, and air is blown through the mouth, so that air enters the inner cavity of the shell, pollution caused by long-term exposure in the atmosphere is avoided, and the medicine atomization effect of the nasal spray delivery device can be improved through the air inlet.

Description

[0001] This application is a divisional application of Chinese patent application CN 111298249 B, filed on March 24, 2020, entitled “A Novel Nasal Spray Delivery Device”. Technical Field

[0002] The present invention relates to the field of medical devices, and more specifically, to a nasal spray delivery device. Background Art

[0003] There are many nasal diseases that need treatment, one such condition is rhinitis, specifically nasal catarrh, which may be allergic or non-allergic, is usually associated with infection and interferes with normal nasal function. For example, typically 10% to 20% of the population suffers from allergic and non-allergic inflammation of the nasal airways, at which time, nasal congestion, tearing, thin nasal discharge, sneezing and itching of the spongy tissue of the turbinates are the most common symptoms. It will be appreciated that nasal congestion impedes nasal breathing, encourages mouth breathing, causes snoring and sleep disturbances. Other nasal diseases include nasal polyps protruding from the sinuses, hypertrophy of the adenophora, secretory otitis media, sinus disease and decreased sense of smell.

[0004] In the treatment of certain nasal diseases, topical administration is advantageous, especially in cases where the nasal mucosa is the primary pathological pathway, such as in the treatment or relief of nasal congestion, commonly administered topical agents include decongestants, antihistamines, cromolyns, steroids and antibiotics. Currently, among the various known anti-inflammatory drugs, topical steroids have been shown to be effective for nasal congestion. Topical decongestants have also been suggested for relieving nasal congestion. Treatment of pleural hypertrophy and chronic secretory otitis media with topical decongestants, steroids and antimicrobials has also been proposed, although controversial. In addition, topical administration has been used to treat or at least alleviate inflammation of the anterior nasopharynx, sinuses and Eustachian tube.

[0005] The nasal passages provide an excellent route for systemic delivery of drugs such as hormones (e.g., oxytocin and calcitonin) and analgesics (e.g., anti-migraine compositions) because the high blood flow rate and large surface area of ​​the nasal mucosa provide rapid systemic absorption.

[0006] The air inlet of the existing nasal spray delivery device on the market is generally an open structure, and the atmosphere enters the inner cavity of the nasal spray delivery device shell, which is easy to cause pollution to the inner cavity of the shell. The pollutants enter the human body through the nasal cavity when the medicine is used, which is harmful to human health. In addition, the existing medicine and the device are an integral whole. The existing nasal spray delivery device and the medicine are assembled at the factory. If they are disassembled, the shell and external stickers will be damaged. Some products will simply use glue for bonding. Forced disassembly and reassembly cannot restore the original function and appearance, and the medicine cannot be replenished for recycling. After the medicine is used up, it can only be purchased again, and the old device can only be thrown away together with the used medicine can, which is both wasteful and environmentally unfriendly. Summary of the invention

[0007] In view of this, in order to solve the problem that the air inlet of a nasal spray delivery device is generally an open structure, and the atmosphere passes into the inner cavity of the shell of the nasal spray delivery device, which easily causes pollution to the inner cavity of the shell, and the pollutants enter the human body through the nasal cavity when the medicine is used, thereby damaging human health, the present invention proposes a novel nasal spray delivery device. On the basis of the existing nasal spray delivery device, a valve assembly is provided at the end of the air inlet. When the user does not use the nasal spray delivery device, the valve assembly is in a closed state. When the user uses the nasal spray delivery device, the medicine can is pushed into the upper inner part of the shell and the valve assembly is opened at the same time, so that the gas enters the inner cavity of the shell, thereby avoiding pollution caused by long-term exposure to the atmosphere and the air inlet can improve the medicine atomization effect of the nasal spray delivery device.

[0008] A novel nasal spray delivery device comprises: a shell 1, a nozzle 2, an air inlet 3, and a medicine tank 4. The shell 1 is gourd-shaped, and the shell 1 is an inner cavity structure symmetrical about the midline axis. The bottom of the shell 1 is a circular opening. The medicine tank 4 passes through the circular hole at the bottom of the shell 1 and is connected to the inner cavity of the shell 1. The nozzle 2 is sleeved on the top of the shell 1. The air inlet 3 is connected to the middle of the shell 1 and communicates with the inside of the shell 1. A liquid delivery structure 7 is provided inside the port of the medicine tank 4. The delivery structure 7 includes a common spray structure 71 and a conduit 72. A common spray structure 71 is provided inside the bottle mouth end of the medicine tank 4. Two guide grooves 115 are symmetrically clamped on the outer wall of the spray structure 71. A conduit 72 is sleeved inside the spray structure 71. One end of the conduit 72 is located at the bottom of the spray structure 71. At the port of the nozzle 2, the other end of the catheter 72 is placed in the lower middle part of the medicine tank 4, which is characterized in that: a valve assembly 11 is provided in the inner cavity of the shell 1, the valve assembly 11 includes an air blowing valve 111 and an air inlet side retaining wall 112, the valve assembly 11 is close to the connection between the air inlet 3 and the shell 1, when the user does not use the nasal spray delivery device, the valve assembly 11 is in a closed state, when the user uses the nasal spray delivery device, the nozzle 2 is placed in the user's nasal cavity, the air inlet 3 is placed in the user's mouthpiece, the medicine tank 4 is pushed to the bottom of the shell 1, and the valve assembly 11 is opened at the same time, and air is blown with the mouth, so that the gas enters the inner cavity of the shell 1, avoiding pollution caused by long-term exposure to the atmosphere and the air inlet 3 can improve the atomization effect of the medicine of the nasal spray delivery device.

[0009] Furthermore, the air inlet side baffle wall 112 is located at the opening where the shell 1 and the air inlet 3 are connected. The air inlet side baffle wall 112 is a fan-shaped structure above and below. The fan-shaped structure includes a first fan-shaped surface 1121 and a second fan-shaped surface 1122. The first fan-shaped surface 1121 and the second fan-shaped surface 1122 are spaced apart and parallel. The curved edge of the first fan-shaped surface 1121 is fixedly connected to the upper end of the internal opening of the shell 1, and the curved edge of the second fan-shaped surface 1122 is fixedly connected to the lower end of the internal opening of the shell 1, and the curved edges of the first fan-shaped surface 1121 and the second fan-shaped surface 1122 are integrally formed with the shell 1.

[0010] Furthermore, a connecting piece 1123 is connected to the same side surface of the first sector surface 1121 and the second sector surface 1122 , and a first air hole 11231 is opened at one end of the middle portion of the connecting piece 1123 , and the first air hole 11231 is communicated with an opening at the connection of the air inlet 3 .

[0011] Furthermore, the other same side surfaces of the first sector surface 1121 and the second sector surface 1122 , ie, the side not connected to the connecting piece 1123 , are respectively provided with a first groove 11211 and a second groove 11221 .

[0012] Furthermore, a first limiting structure 113 is arranged in parallel at intervals at the lower part of the air inlet side baffle wall 112. The first limiting structure 113 is integrally formed with the inner wall of the shell 1. A third groove 1131 is provided at one end of the first limiting structure 113. The center lines of the first groove 11211, the second groove 11221 and the third groove 1131 are in a straight line.

[0013] Furthermore, the blowing valve 111 is a rectangular thin sheet, and a second air hole 1111 is provided in the middle of the blowing valve 111. When in use, the second air hole 1111 is exactly overlapped and communicated with the first air hole 11231. When not in use, the second air hole 1111 and the first air hole 11231 are completely non-overlapping. The two ends of the blowing valve 111 are respectively fixedly and vertically connected with the second limiting structure 1113 and the third limiting structure 1114, and one side of the blowing valve 111 is clamped with the first groove 11211, the second groove 11221 and the third groove 1131.

[0014] Furthermore, the second limiting structure 1113 is located at the upper part of the first fan-shaped piece, the third limiting structure 1114 is located at the lower part of the first limiting structure 113, and the third limiting structure 1114 is provided with a boss 1112 near the vertical line of the first limiting structure 113, and the boss 1112 and the third limiting structure 1114 are integrally formed.

[0015] Furthermore, a reset spring 8 is provided at the boss 1112, one end of the reset spring 8 is tightly attached to the lower end surface of the first limiting structure 113, and the other end is sleeved on the boss 1112. When the medicine tank 4 is in use, the medicine tank 4 is pushed upward to exert an upward thrust on the spring, and the spring must have a downward reaction force, thereby facilitating the resetting of the medicine tank 4.

[0016] Furthermore, a medicine tank cover 5 is provided at the upper end of the medicine tank 4, and two guide ribs 51 are provided at symmetrical positions on the outer wall of the medicine tank cover 5 corresponding to the guide groove 115. The medicine tank cover 5 is connected to the shell 1 through a detachable connecting structure 6, and the connection method of the detachable connecting structure 6 includes detachable connections such as snap-on structure connection and threaded connection.

[0017] Furthermore, the bottom of the detachable connecting structure 6 is integrally connected to a fourth limiting structure 114, and the guide groove 115 is vertically connected to the fourth limiting structure 114 and is integrally formed with the fourth limiting structure 114. When the nasal spray delivery device is pressed, a guide is given to the spray structure 71 to ensure that it only moves up and down in the guide groove 115.

[0018] Furthermore, the common spray structure 71 is movably connected to the medicine tank cover 5, and the top of the common spray structure 71 is close to the lower end surface of the third limiting structure 1114. When in use, the bottom of the medicine tank 4 is pressed up and down, so that the medicine tank cover 5 moves up and down relative to the common spray structure 71 to complete the drug administration process.

[0019] Beneficial effects of the present invention: when the user does not use the nasal spray delivery device, the second limiting structure 1113 of the blowing valve 111 is attached to the upper end surface of the first fan-shaped piece, the reset spring 8 is in a natural state, the first air hole 11231 and the second air hole 1111 are completely non-overlapping, and the valve assembly 11 is in a closed state, so that the gas enters the inner cavity of the shell 1, avoiding the pollution caused by long-term exposure to the atmosphere, and the air inlet 3 intakes air into the inner cavity of the shell 1. When the user uses the nasal spray delivery device, the nozzle 2 is placed in the user's nasal cavity, and the air inlet 3 is placed in the user's mouthpiece. The top of the boss 1112 of the third limiting structure 1114 of the blowing valve 111 is attached to the lower end surface of the first limiting structure 113, the reset spring 8 is in a taut state, and the first air hole 11231 is completely non-overlapping with the second air hole 1111. The valve assembly 11 is in a closed state, so that the gas enters the inner cavity of the shell 1, avoiding the pollution caused by long-term exposure to the atmosphere, and the air inlet 3 intakes air into the inner cavity of the shell 1. When the user uses the nasal spray delivery device, the nozzle 2 is placed in the user's nasal cavity, and the air inlet 3 is placed in the user's mouthpiece. The top of the boss 1112 of the third limiting structure 1114 of the blowing valve 111 is attached to the lower end surface of the first limiting structure 113, the reset spring 8 is in a taut state, and the first air hole 11231 is closed. 231 completely overlaps with the second air hole 1111, and the valve assembly 11 is connected to the opening at the connection of the air inlet 3. While blowing air into the air inlet, the medicine tank 4 is pushed into the upper part of the shell 1. The medicine tank 4 moves upward to drive the valve assembly 11 to open. After the blowing valve 111 is opened, the blowing airflow can enter the inner cavity of the shell 1 through the blowing valve 111, forming a continuous airflow from the air inlet 3 to the nozzle 2. At the same time, pressing the medicine tank 4 will also cause the spray in the medicine tank 4 to spray out. The blowing airflow accelerates the spray through the Bernoulli principle. The Bernoulli principle states that in the same fluid, the flow rate is large and the pressure is small; the flow rate is small and the pressure is large. The fluid will automatically flow from high pressure to low pressure, increasing the airflow pressure on the medicine tank cover 5, thereby improving the atomization effect of the nasal spray delivery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the appearance structure of the novel nasal spray delivery device of the present invention.

[0021] Figure 2 Schematic diagram of the internal structure of the novel nasal spray delivery device of the present invention.

[0022] Figure 3 Schematic diagram of the valve assembly structure of the novel nasal spray delivery device of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the insufflation valve of the novel nasal spray delivery device of the present invention.

[0024] Figure 5 It is a schematic diagram of the guide rib structure of the medicine can cover of the novel nasal spray delivery device of the present invention.

[0025] Figure 6 It is a schematic diagram of the guide groove structure of the novel nasal spray delivery device of the present invention.

[0026] Figure 7 It is a schematic diagram of the engaging structure of the guide ribs and guide grooves of the novel nasal spray delivery device of the present invention.

[0027] Main component symbols The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION Specific embodiment: like Figure 1 FIG. 4 is a schematic diagram of the appearance structure of the novel nasal spray delivery device of the present invention; Figure 2 As shown, it is a schematic diagram of the internal structure of the novel nasal spray delivery device of the present invention; Figure 3 As shown, it is a schematic diagram of the valve assembly structure of the novel nasal spray delivery device of the present invention; Figure 4 As shown in FIG. 1 , it is a schematic diagram of the structure of the insufflation valve of the novel nasal spray delivery device of the present invention; Figure 5 As shown, it is a schematic diagram of the medicine can cover structure of the novel nasal spray delivery device of the present invention; Figure 6 As shown, it is a schematic diagram of the guide groove structure of the novel nasal spray delivery device of the present invention; Figure 7 The figure shows a schematic diagram of the engaging structure of the guide ribs and guide grooves of the novel nasal spray delivery device of the present invention.

[0029] A novel nasal spray delivery device comprises: a shell 1, a nozzle 2, an air inlet 3, and a medicine tank 4. The shell 1 is gourd-shaped, and the shell 1 is an inner cavity structure symmetrical about the midline axis. The bottom of the shell 1 is a circular opening. The medicine tank 4 passes through the circular hole at the bottom of the shell 1 and is connected to the inner cavity of the shell 1. The nozzle 2 is sleeved on the top of the shell 1. The air inlet 3 is connected to the middle of the shell 1 and communicates with the inside of the shell 1. A liquid delivery structure 7 is provided inside the port of the medicine tank 4. The delivery structure 7 includes a common spray structure 71 and a conduit 72. A common spray structure 71 is provided inside the bottle mouth end of the medicine tank 4. Two guide grooves 115 are symmetrically clamped on the outer wall of the spray structure 71. A conduit 72 is sleeved inside the spray structure 71. One end of the conduit 72 is located at the bottom of the spray structure 71. At the port of the nozzle 2, the other end of the catheter 72 is placed in the lower middle part of the medicine tank 4, which is characterized in that: a valve assembly 11 is provided in the inner cavity of the shell 1, the valve assembly 11 includes an air blowing valve 111 and an air inlet side retaining wall 112, the valve assembly 11 is close to the connection between the air inlet 3 and the shell 1, when the user does not use the nasal spray delivery device, the valve assembly 11 is in a closed state, when the user uses the nasal spray delivery device, the nozzle 2 is placed in the user's nasal cavity, the air inlet 3 is placed in the user's mouthpiece, the medicine tank 4 is pushed to the bottom of the shell 1, and the valve assembly 11 is opened at the same time, and air is blown with the mouth, so that the gas enters the inner cavity of the shell 1, avoiding pollution caused by long-term exposure to the atmosphere and the air inlet 3 can improve the atomization effect of the medicine of the nasal spray delivery device.

[0030] The air inlet side baffle wall 112 is located at the opening where the shell 1 and the air inlet 3 are connected. The air inlet side baffle wall 112 is a fan-shaped structure above and below. The fan-shaped structure includes a first fan-shaped surface 1121 and a second fan-shaped surface 1122. The first fan-shaped surface 1121 and the second fan-shaped surface 1122 are spaced apart and parallel. The curved edge of the first fan-shaped surface 1121 is fixedly connected to the upper end of the internal opening of the shell 1, and the curved edge of the second fan-shaped surface 1122 is fixedly connected to the lower end of the internal opening of the shell 1, and the curved edges of the first fan-shaped surface 1121 and the second fan-shaped surface 1122 are integrally formed with the shell 1.

[0031] A connecting piece 1123 is connected to the same side of the first sector surface 1121 and the second sector surface 1122 . A first air hole 11231 is formed at one end of the middle of the connecting piece 1123 . The first air hole 11231 is communicated with an opening at the connection of the air inlet 3 .

[0032] The other same side surfaces of the first sector surface 1121 and the second sector surface 1122 , ie, the side not connected to the connecting piece 1123 , are respectively provided with a first groove 11211 and a second groove 11221 .

[0033] A first limiting structure 113 is arranged in parallel at intervals at the lower part of the air inlet side baffle wall 112. The first limiting structure 113 is integrally formed with the inner wall of the shell 1. A third groove 1131 is arranged at one end of the first limiting structure 113. The center lines of the first groove 11211, the second groove 11221 and the third groove 1131 are in a straight line.

[0034] The blowing valve 111 is a rectangular thin sheet, and a second air hole 1111 is provided in the middle of the blowing valve 111. When in use, the second air hole 1111 is overlapped and communicated with the first air hole 11231. When not in use, the second air hole 1111 and the first air hole 11231 are completely non-overlapping. The two ends of the blowing valve 111 are respectively fixedly and vertically connected with a second limiting structure 1113 and a third limiting structure 1114. One side of the blowing valve 111 is clamped with the first groove 11211, the second groove 11221 and the third groove 1131.

[0035] The second limiting structure 1113 is located at the upper part of the first fan-shaped piece, the third limiting structure 1114 is located at the lower part of the first limiting structure 113, and the third limiting structure 1114 is provided with a boss 1112 near the vertical line of the first limiting structure 113, and the boss 1112 and the third limiting structure 1114 are integrally formed.

[0036] A reset spring 8 is provided at the boss 1112, one end of the reset spring 8 is tightly attached to the lower end surface of the first limiting structure 113, and the other end is sleeved on the boss 1112. When the medicine tank 4 is in use, the medicine tank 4 is pushed upward to exert an upward thrust on the spring, and the spring must have a downward reaction force, thereby facilitating the reset of the medicine tank 4.

[0037] The medicine tank 4 is provided with a medicine tank cover 5 at the upper end, and a guide rib 51 is provided at a symmetrical position on the outer wall of the medicine tank cover 5 corresponding to the guide groove 115. The medicine tank cover 5 is connected to the shell 1 through a detachable connecting structure 6, and the connection method of the detachable connecting structure 6 includes detachable connections such as snap structure connection and threaded connection.

[0038] The bottom of the detachable connecting structure 6 is integrally connected with a fourth limiting structure 114, and the guide groove 115 is vertically connected to the fourth limiting structure 114 and is integrally formed with the fourth limiting structure 114. When the nasal spray delivery device is pressed, a guide is given to the spray structure 71 to ensure that it only moves up and down in the guide groove 115.

[0039] The common spray structure 71 is movably connected to the medicine tank cover 5, and the top of the common spray structure 71 is close to the lower end surface of the third limiting structure 1114. When in use, the bottom of the medicine tank 4 is pressed up and down, so that the medicine tank cover 5 moves up and down relative to the common spray structure 71 to complete the drug administration process.

[0040] Beneficial effects of the present invention: when the user does not use the nasal spray delivery device, the second limiting structure 1113 of the blowing valve 111 is attached to the upper end surface of the first fan-shaped piece, the reset spring 8 is in a natural state, the first air hole 11231 and the second air hole 1111 are completely non-overlapping, and the valve assembly 11 is in a closed state, so that the gas enters the inner cavity of the shell 1, avoiding the pollution caused by long-term exposure to the atmosphere, and the air inlet 3 intakes air into the inner cavity of the shell 1. When the user uses the nasal spray delivery device, the nozzle 2 is placed in the user's nasal cavity, and the air inlet 3 is placed in the user's mouthpiece. The top of the boss 1112 of the third limiting structure 1114 of the blowing valve 111 is attached to the lower end surface of the first limiting structure 113, the reset spring 8 is in a taut state, and the first air hole 11231 is completely non-overlapping with the second air hole 1111. The valve assembly 11 is in a closed state, so that the gas enters the inner cavity of the shell 1, avoiding the pollution caused by long-term exposure to the atmosphere, and the air inlet 3 intakes air into the inner cavity of the shell 1. When the user uses the nasal spray delivery device, the nozzle 2 is placed in the user's nasal cavity, and the air inlet 3 is placed in the user's mouthpiece. The top of the boss 1112 of the third limiting structure 1114 of the blowing valve 111 is attached to the lower end surface of the first limiting structure 113, the reset spring 8 is in a taut state, and the first air hole 11231 is closed. 231 completely overlaps with the second air hole 1111, and the valve assembly 11 is connected to the opening at the connection of the air inlet 3. While blowing air into the air inlet, the medicine tank 4 is pushed into the upper part of the shell 1. The medicine tank 4 moves upward to drive the valve assembly 11 to open. After the blowing valve 111 is opened, the blowing airflow can enter the inner cavity of the shell 1 through the blowing valve 111, forming a continuous airflow from the air inlet 3 to the nozzle 2. At the same time, pressing the medicine tank 4 will also cause the spray in the medicine tank 4 to spray out. The blowing airflow accelerates the spray through the Bernoulli principle. The Bernoulli principle states that in the same fluid, the flow rate is large and the pressure is small; the flow rate is small and the pressure is large. The fluid will automatically flow from high pressure to low pressure, increasing the airflow pressure on the medicine tank cover 5, thereby improving the atomization effect of the nasal spray delivery device.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A nasal spray delivery device, characterized in that include: case; The nozzle and the air inlet are respectively arranged at the top and the middle of the shell, and are both communicated with the inner cavity of the shell; a medicine tank, partially movably disposed in the inner cavity of the housing, the medicine tank being connected to the nozzle via a delivery structure; A valve assembly is provided at the connection between the air inlet and the housing and is mechanically linked with the medicine tank to selectively control the opening and closing state of the air inlet; The nasal spray delivery device is configured such that: when not in use, the valve assembly closes the air inlet; when in use, the medicine canister is pushed toward the bottom of the shell, driving the valve assembly to open the air inlet, so that the blowing airflow can accelerate the spray at the nozzle.

2. The nasal spray delivery device according to claim 1, characterized in that The shell is gourd-shaped, and a circular opening matching the medicine jar is arranged at the bottom thereof.

3. The nasal spray delivery device according to claim 1, characterized in that The valve assembly comprises: An air inlet side baffle wall is arranged at the connection between the air inlet and the shell, and a first air hole is arranged on the air inlet side baffle wall; An air blowing valve is movably inserted through the air inlet side baffle wall, and a second air hole is provided on the air blowing valve; Wherein, when the nasal spray delivery device is not in use, the first air hole and the second air hole are in a non-overlapping state; when the nasal spray delivery device is in use, the first air hole and the second air hole are in an overlapping and communicating state.

4. The nasal spray delivery device according to claim 3, characterized in that The air inlet side baffle wall comprises first and second sector-shaped surfaces which are opposite to each other in upper and lower directions, and a connecting piece connecting the first and second sector-shaped surfaces; Wherein, the first and second sector-shaped surfaces are respectively provided with first and second grooves for the blowing valve to pass through, and the first air hole is located in the middle of the connecting piece.

5. The nasal spray delivery device according to claim 4, characterized in that A first limiting structure is arranged below the air inlet side baffle wall, and the first limiting structure is provided with a third groove for the air blowing valve to pass through.

6. The nasal spray delivery device according to claim 5, characterized in that A second limiting structure and a third limiting structure are respectively provided at the upper and lower ends of the air blowing valve, wherein the second limiting structure is located above the first sector surface, and the third limiting structure is located below the first limiting structure.

7. The nasal spray delivery device according to claim 6, characterized in that A return spring is arranged between the third limiting structure and the first limiting structure.

8. The nasal spray delivery device of claim 7, wherein: The third limiting structure is provided with a boss on one side facing the first limiting structure, one end of the return spring is disposed on the boss, and the other end is tightly attached to the lower end surface of the first limiting structure.

9. The nasal spray delivery device of claim 5, wherein: The delivery structure comprises: A spray structure is movably connected to the medicine tank cover of the medicine tank, and the top end of the common spray structure abuts against the lower end surface of the first limiting structure; A conduit has one end extending to the nozzle and the other end placed in the medicine tank.

10. The nasal spray delivery device of claim 9, wherein: Guide grooves are symmetrically arranged on both sides of the spray structure, and guide ribs corresponding to the guide grooves are arranged on the outer wall of the medicine tank cover.

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