A nasal spray device

Abstract

The application discloses a nasal spray device, comprising a nasal sprayer body, a pump assembly, a medicine bottle, a nose pad, a mouth pad and a spray module, wherein the nasal sprayer body is internally provided with an air pressure chamber and an assembly chamber; the pump assembly is movably arranged in the assembly chamber, and comprises an adapter cover and a pressure pump unit arranged in the adapter cover; the medicine bottle is connected with the adapter cover, and the bottom of the medicine bottle extends to the lower part of the nasal sprayer body; the nose pad and the mouth pad are respectively arranged at the top and the side of the nasal sprayer body, and the mouth pad is communicated with the air pressure chamber; the spray module is arranged in the nose pad, and the lower end of the spray module penetrates through the air pressure chamber and is connected with the pressure pump unit. The device simultaneously integrates the liquid medicine spraying power of the pressure pump unit and the air flow pushing power of the air pressure chamber, and the two powers are cooperatively used to push the atomized medicine to be delivered forward, and the double power output can make the medicine have a higher initial spraying speed, so that the medicine can be accurately delivered to the specified lesion position in the deep part of the nasal cavity, and the medicine deposition rate of the lesion part is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a nasal spray device. Background Technology

[0002] Nasal delivery is a widely used clinical method of drug administration. Compared to oral administration, it avoids the first-pass effect in the liver, improving drug utilization efficiency. Compared to injection, it is more convenient to administer and has higher patient acceptance, especially when delivering special drugs such as peptides, proteins, and vaccines. Currently, most nasal delivery devices on the market are single-powered structures, relying solely on a manually operated pump for pressure. Long-term clinical use has gradually revealed many unresolved industry pain points.

[0003] First, conventional single-power nasal delivery devices do not have a dedicated soft palate closure guide structure when spraying medication. The soft palate in the human mouth is in a naturally relaxed state and does not completely close the nasopharyngeal passage. This directly causes some medication to flow into the airway or esophagus through the nasal cavity. This not only significantly reduces the drug deposition rate at the lesion site, but may also cause adverse reactions such as choking, nausea, and pharyngeal irritation in users because the medication enters the digestive tract or lower respiratory tract. The probability of such adverse reactions is significantly increased, especially for children, elderly patients, or people with sensitive nasal mucosa.

[0004] Secondly, since there is only one power source for drug delivery, this single-power nasal delivery device may have insufficient power when spraying medication. This is especially true when the patient's nasal cavity is swollen, has polyps or other lesions that narrow the nasal passage, or when the medication needs to be delivered to deeper parts of the posterior nasal cavity or nasopharynx. The single pump power often cannot provide sufficient spray speed, causing the medication to fail to reach the intended delivery location accurately. The medication will not be able to reach the lesion completely, ultimately affecting the overall treatment effect and failing to achieve the expected dosage. Summary of the Invention

[0005] The purpose of this invention is to provide a nasal spray device that at least solves the above-mentioned problems.

[0006] The objective of this invention is achieved through the following technical solution: A nasal spray device, comprising: The main body of the nasal spray device has an internal pressure chamber and an assembly chamber; A pump assembly is movably disposed within the assembly chamber, the pump assembly including an adapter cover and a pressure pump unit disposed within the adapter cover; A medicine bottle, connected to the adapter cap, with its bottom extending below the nasal spray body; The nose support and mouth support are respectively disposed on the top and side of the nasal spray body, and the mouth support is connected to the air pressure chamber; A spray module is disposed inside the nose support, with its lower end passing through the air pressure chamber and connected to the pressure pump unit; In its initial state, the spray module seals the airflow channel between the air pressure chamber and the nose support; In operation, the medicine bottle actuates the pump unit and causes the spray module to open the airflow channel, while a dose of liquid preparation is atomized and sprayed outward from the nose.

[0007] In some embodiments, the nasal spray body is provided with a first ring platform and a second ring platform spaced apart from bottom to top to separate the internal space to form the air pressure chamber and the assembly chamber; The pump assembly is always sealed to the first annular platform, and the spray module is selectively sealed to the second annular platform to control the opening or closing of the airflow channel.

[0008] In some embodiments, a first groove is provided on the inner side of the first ring platform, and a sealing ring is provided in the first groove, the sealing ring being sealed and fitted with the adapter cover.

[0009] In some embodiments, the spray module includes an infusion tube, the infusion tube having a switch structure in its middle, the switch structure having a first step, a second step, and a third step with increasing outer diameters from top to bottom; wherein... A second groove is provided on the first step, and a sealing sheet is provided in the second groove. The outer diameter of the sealing sheet is larger than the inner diameter of the second annular platform. The outer diameter of the vertical portion of the second step is smaller than the inner diameter of the second ring platform to form an airflow gap, and the outer diameter of the horizontal portion is larger than the inner diameter of the second ring platform to form a stop structure. A spring is provided between the third step and the second ring platform, and in the initial state, the sealing sheet seals the second ring platform under the action of the spring.

[0010] In some embodiments, the spray module includes an infusion tube and a spray head. An atomizing chip and a swirl guide post are arranged sequentially from top to bottom inside the spray head. The upper end of the infusion tube is inserted into the spray head and abuts against the swirl guide post.

[0011] In some embodiments, the outer periphery of the infusion tube is provided with a groove and a rib, and the inner wall of the spray head is provided with a protrusion corresponding to the groove. The groove and the protrusion are engaged and fixed, and the rib interferes with and seals against the inner wall of the spray head. And / or, the bottom of the spray head is provided with a first rim, and the outer periphery of the infusion tube is provided with a second rim located below the first rim, and the first rim and the second rim are connected as a whole by an aluminum shell.

[0012] In some embodiments, the adapter cap is fixed to the medicine bottle via a threaded, detachable connection.

[0013] In some embodiments, guide plates are provided on both sides of the adapter cover, and guide grooves are provided on both sides of the assembly compartment. The guide grooves slide with the guide plates and restrict the circumferential rotation of the adapter cover.

[0014] In some embodiments, the nose support and / or the mouth support are connected to the nasal spray body via a detachable structure.

[0015] In some embodiments, the detachable structure includes: An extension portion is provided on the top and / or side of the nasal spray body, and a slot is provided on the extension portion; An outer component is disposed on the outer periphery of the extension portion, and the inner side of the outer component is provided with a snap-fit ​​portion and a hook portion; A docking part is provided at the assembly end of the nose support and / or the mouth support, and the docking part is provided with an anti-detachment part and a hook groove; The snap-fit ​​part is connected to the snap-fit ​​groove, the hook part is connected to the hook groove, and the hook part and the extension part cooperate to form an anti-detachment groove, and the anti-detachment part is connected to the anti-detachment groove.

[0016] In some embodiments, the anti-detachment part has a mushroom-shaped structure, including an integrally connected cap and a handle; The anti-detachment groove has an assembly opening, the outer diameter of the cover is larger than the diameter of the assembly opening, and the outer diameter of the handle is smaller than or equal to the diameter of the assembly opening.

[0017] In some embodiments, the cover portion forms at least one surface seal within the anti-detachment groove; And / or, the outer end face of the extension portion or the inner end face of the claw portion is provided with a sealing rib, and the sealing rib interferes with the handle portion to form a line seal.

[0018] Compared with the prior art, the beneficial effects of the present invention include at least the following: 1. This device integrates the liquid injection power of the pump unit and the airflow propulsion power of the air chamber. Users can input positive pressure airflow into the connected air chamber by blowing air through their mouth. After the airflow channel is opened, the two forces work together to propel the atomized medicine forward. When in use, the user's blowing action can naturally guide the soft palate to lift up and close the nasopharyngeal passage, fundamentally preventing the problem of medicine flowing into the esophagus or airway through the nasopharynx. At the same time, the double power output allows the medicine to have a higher initial spray speed, which can easily and accurately deliver the medicine to the designated lesion location deep in the nasal cavity, greatly improving the drug deposition rate at the lesion site.

[0019] 2. The detachable structure can be disassembled into multiple independent parts. During cleaning, the nose and mouth supports can be removed from the main body of the nasal sprayer, exposing all the connecting gaps to the field of vision. This reduces hidden hygiene dead spots, allowing users to clean and disinfect all contact parts more thoroughly, avoiding the problems of dirt accumulation and bacterial growth during long-term reuse.

[0020] 3. The detachable structure has a double sealing effect. The combination of surface seal and line seal can reduce the problem of air leakage at the connection point and ensure the stability of power output.

[0021] 4. The infusion tube and spray head of the spray module are quickly positioned and assembled through a groove and protrusion snap-fit ​​structure, which is simple and efficient to assemble. At the same time, the interference seal between the rib and the inner wall, plus the aluminum shell covering and fixing the two edges, achieves a multiple sealing effect, effectively avoiding the problem of drug leakage during long-term use.

[0022] 5. The threaded connection allows for replenishment of the medicine bottle, or a brand new bottle pre-filled with medicine can be directly replaced, allowing for reuse of the main body of the nasal spray, significantly reducing the cost of consumables for long-term use and avoiding resource waste. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the nasal spray device of the present invention.

[0024] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure.

[0025] Figure 3 This is an exploded structural diagram of the nasal spray device.

[0026] Figure 4 This is a schematic diagram of the spray module.

[0027] Figure 5 This is an exploded view of the detachable structure.

[0028] Figure 6 This is a schematic diagram of a mouth-and-mouth bearing equipped with an anti-clogging strip.

[0029] In the picture: 1. Nasal spray body; 11. First annular platform; 12. Second annular platform; 13. Guide groove; 1a. Pressure chamber; 1b. Assembly chamber; 2. Pump assembly; 21. Adapter cover; 211. Guide plate; 22. Pump unit; 3. Medicine bottles; 4. Nasal support; 5. Mouth bearing; 51. Anti-blocking strip; 6. Spray module; 61. Infusion tube; 611. Groove; 612. Rib; 613. Second edging; 62. Switch structure; 621. First step; 622. Second step; 623. Third step; 624. Sealing sheet; 625. Spring; 63. Spray head; 631. Atomizing chip; 632. Swirl guide post; 633. Protrusion; 634. First edging; 64. Aluminum shell; 7. Sealing ring; 8. Detachable structure; 81. Extension; 811. Slot; 82. Outer casing; 821. Snap-fit ​​part; 822. Claw part; 823. Strip groove; 83. Butt joint; 831. Anti-detachment part; 8311. Cover part; 8312. Handle part; 832. Hook groove; 84. Anti-detachment groove; 841. Assembly port; 85. Sealing rib. Detailed Implementation

[0030] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0031] The terms used to express position and direction in this invention are illustrated with reference to the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0032] refer to Figures 1 to 5 As shown, the present invention provides a nasal spray device, including a nasal spray body 1, a pump assembly 2, a medicine bottle 3, a nose support 4 and a mouth support 5, and a spray module 6.

[0033] The nasal spray body 1 serves as the core load-bearing component of the entire device, with all functional parts assembled in layers around it. In this application, the nasal spray body 1 can be formed by two half-shells, left and right, and the internal space of the nasal spray body 1 is precisely divided into two independent functional chambers: a pressure chamber 1a and an assembly chamber 1b. The lower assembly chamber 1b is used to house the pump assembly 2, which can slide up and down along the axial direction of the assembly chamber 1b. The upper pressure chamber 1a serves as a power-receiving chamber for storing the positive pressure airflow. Its cavity volume is preferably in the range of 30-50 mL. This range ensures that the user can input sufficient positive pressure airflow into the cavity with a single short exhale, while preventing excessive dispersion of airflow pressure due to an excessively large cavity volume, thus ensuring that the airflow flowing out from the airflow channel can maintain a stable pushing pressure.

[0034] The pump assembly 2 is a manually actuated liquid delivery member, which is entirely movably disposed in the assembly compartment 1b, and its core components include an adapter cap 21 and a pressure pump unit 22 disposed in the adapter cap 21. In the present application, the adapter cap 21 is preferably a threaded cap, and its overall outer shape is a "convex"-shaped structure adapted to the inner cavity of the assembly compartment 1b. The pressure pump unit 22 is preferably a medical-grade micro-metering pressure pump, and the liquid output dose of a single press thereof is precisely controlled within an adjustable range of 50-200 μL, so as to meet the single-dose administration requirements of different preparations. In addition, the bottom of the pressure pump unit 22 is provided with a liquid suction port, and the top is provided with a liquid outlet, which is directly butted upward with the spray module 6.

[0035] The bottom of the nasal sprayer main body 1 is completely open, which just allows the medicine bottle 3 to extend into the assembly compartment 1b from its bottom, so that the medicine bottle 3 is connected with the adapter cap 21. In the present application, the medicine bottle 3 is designed to be detachably connected and fixed with the adapter cap 21 through threads, and a user can conveniently rotate and unscrew the empty medicine bottle 3 from the adapter cap 21 to replenish and fill the liquid medicine or directly replace it with a new pre-installed medicine bottle 3, thereby reducing the consumable cost for long-term use and reducing resource waste. In addition, the medicine bottle 3 extends from the inside of the assembly compartment 1b to the lower part of the nasal sprayer main body 1, and the user only needs to push the bottom of the bottle upward to drive the adapter cap 21 to move upward, thereby actuating the pressure pump unit 22 to complete the extraction and pushing action of the liquid preparation. The whole operation does not require additional pressing of buttons, and the upward pushing operation can be easily completed with one hand holding, with an extremely low operation threshold. In particular, since the direction of pressing the medicine bottle 3 is consistent with the direction of the pressure pump unit 22, there is basically no power transmission loss during the pushing process by the user, and only a relatively small thrust is required to actuate the pressure pump unit 22, which is beneficial for special groups such as the elderly and children to operate easily.

[0036] Both the nasal support 4 and the mouthpiece 5 are made of flexible materials, for example, they can be injection-molded from medical-grade silicone material. Among them, the nasal support 4 is disposed on the top of the nasal sprayer main body 1, and the outer shape of its top end is designed as a streamlined smooth structure adapted to the human nostril, which can be easily embedded into the nostril during use without easily causing foreign body squeezing pain. The mouthpiece 5 is disposed on the side of the nasal sprayer main body 1 and communicates with the air pressure compartment 1a, and its outer shape is designed as a flat structure conforming to the occlusal radian of the human mouth, so that the user can hold the mouthpiece 5 with lips for blowing operation.

[0037] The spray module 6 is disposed in the nasal support 4, and its lower end penetrates through the air pressure compartment 1a and is connected to the pressure pump unit 22 (the lower end of the liquid delivery tube 61 is connected to the liquid outlet of the pressure pump unit 22). The liquid preparation pushed by the pressure pump unit 22 can form mist droplets, namely the aforementioned spray, through the spray module 6.

[0038] In the initial state, the spray module 6 (which cooperates with the second ring platform 12 through the switch structure 62) seals the airflow channel between the air pressure chamber 1a and the nose support 4. At this time, the air pressure chamber 1a is an independent sealed chamber. Even if the user blows air into the mouth support 5, no airflow will leak out from the nose support 4. The user can calibrate their blowing force in advance to avoid the problem of excessive force during actual operation.

[0039] When the device is in operation, the user simply pushes the bottom of the medicine bottle 3 upwards. The medicine bottle 3 then moves the pump assembly 2 upwards, squeezing and actuating the pump unit 22 to output a dose of liquid preparation. This thrust is simultaneously transmitted upwards to the spray module 6, causing the switch structure 62 of the spray module 6 to move upwards. The airflow channel, which was originally closed, is opened simultaneously. At this time, the positive pressure airflow pre-stored in the pressure chamber 1a flows upwards at high speed along the opened airflow channel, merging with the nebulized preparation output by the pump unit 22. The two forces combine to push the nebulized preparation outwards. The entire preparation spraying and airflow pushing process is basically completed synchronously. The doubled power output allows the liquid preparation to have a higher initial spray speed, thus easily and accurately delivering the nebulized preparation to the designated lesion location deep in the nasal cavity, significantly improving the drug deposition rate at the lesion site. On the other hand, the user's blowing action can naturally guide the soft palate to rise and close the nasopharyngeal passage, fundamentally preventing the liquid preparation from flowing into the esophagus or airway through the nasopharynx.

[0040] refer to Figure 2 and Figure 3 As shown, in some embodiments, a first annular platform 11 and a second annular platform 12 are spaced apart from bottom to top inside the nasal spray body 1. The first annular platform 11 is approximately located at the middle of the nasal spray body 1, and the second annular platform 12 is approximately located at the inner top of the nasal spray body 1, thereby forming the aforementioned air pressure chamber 1a and assembly chamber 1b within the internal space of the nasal spray body 1. In this application, both the first annular platform 11 and the second annular platform 12 are coaxially arranged with the nasal spray body 1 to avoid problems such as jamming or sealing failure of the pump assembly 2 or the spray module 6 due to misalignment.

[0041] In this device, the pump assembly 2 is always in sealed engagement with the first annular platform 11, specifically, as follows: Figure 2 As shown, a recessed first groove is formed on the inner side of the first annular platform 11, and a sealing ring 7 is provided in the first groove. The sealing ring 7 is in a sealing fit with the adapter cover 21. For example, the sealing ring 7 can form an interference fit with the upper annular extension of the adapter cover 21, and the interference is controlled in the range of 0.3-0.5mm. Within this range, it can ensure that the adapter cover 21 maintains an excellent dynamic sealing effect during the up and down sliding process, and will not cause the medicine bottle 3 to get stuck or jammed due to excessive sealing resistance.

[0042] The spray module 6 selectively seals with the second annular platform 12 to control the opening or closing of the airflow channel. Specifically, as... Figure 2 and Figure 3 As shown, the spray module 6 includes an infusion tube 61, with a switch structure 62 integrated in the middle of the infusion tube 61. From top to bottom, it has a first step 621, a second step 622, and a third step 623 with increasing outer diameters. The topmost first step 621 has a recessed second groove around its circumference. A sealing sheet 624 is embedded and fixed inside the second groove. The sealing sheet 624 can be made of polytetrafluoroethylene modified silicone to provide excellent resistance to chemical corrosion and prevent corrosion and aging by various acidic and alkaline agents. Furthermore, the outer diameter of the sealing sheet 624 is precisely designed to be larger than the inner diameter of the second annular platform 12, ensuring that its edge can cover the inner hole of the second annular platform 12. After the lower surface of the sealing sheet 624 comes into contact with the upper surface of the second annular platform 12, a surface seal is formed, thereby sealing the inner hole channel of the second annular platform 12 and preventing airflow from passing through gaps. The vertical portion of the second step 622, located in the middle, is designed to be smaller than the inner diameter of the second ring platform 12. When the switch structure 62 moves upward, the first step 621, along with the sealing plate 624, separates from the second ring platform 12. At this time, the vertical portion enters the inner hole of the second ring platform 12 and forms an airflow gap with the inner wall. The airflow gap of the circumferential ring portion together constitutes the airflow channel between the pressure chamber 1a and the nose support 4, and the airflow in the pressure chamber 1a flows upward to the nose support 4. The outer diameter of the horizontal portion of the second step 622 is designed to be larger than the inner diameter of the second ring platform 12, thereby forming a stop structure. When the switch structure 62 moves upward to the designated position, the upper surface of this horizontal portion will contact the lower end face of the second ring platform 12, thereby restricting the entire infusion tube 61 from moving upward and causing the pump unit 22 to undergo relative displacement, thus completing the extraction and pushing action of the liquid preparation. Meanwhile, this stop structure can precisely control the opening range of the airflow gap, ensuring that the airflow area remains consistent each time it is opened. This results in a stable airflow pushing force for each spray, preventing excessive differences in airflow force between different uses. A spring 625 is installed between the lowermost third step 623 and the second ring platform 12. In the initial, unoperated state, the spring 625 maintains a downward elastic force. This force acts directly on the third step 623, pushing the entire spray module 6 to its lowest position, ensuring that the sealing plate 624 is tightly attached to the upper surface of the second ring platform 12, maintaining a sealed state for the airflow channel. After the user removes the upward pushing force, the rebound force of the spring 625 can drive the entire switch structure 62 to reset downward, restoring the initial sealed state, ready for the next use.

[0043] In this device, the sliding seal of the first ring platform 11 and the selective seal of the second ring platform 12 are independent of each other, eliminating the problem of mutual interference between the two sealing structures and significantly improving long-term stability. Furthermore, the switch structure 62, which cooperates with the second ring platform 12, has virtually no additional independent small parts; almost all components are integrally formed with the infusion tubing 61. Assembly is simple: just insert the spring 625 and place it into the position of the second ring platform 12. This assembly process is extremely simple, avoiding the problems of numerous, easily lost, and difficult-to-assemble parts inherent in traditional discrete valve structures. Simultaneously, the movement is smooth and stable throughout, reducing the likelihood of jamming or failure.

[0044] refer to Figure 4 As shown, in some embodiments, the spray module 6 includes an infusion tube 61 and a spray head 63. The spray head 63, as the final actuator for atomizing and spraying the liquid preparation, has an atomizing chip 631 and a swirl guide post 632 installed sequentially from top to bottom within its internal space. The upper end of the infusion tube 61 is inserted into the spray head 63 through the bottom opening, and the top surface of the infusion tube 61 directly abuts against the bottom surface of the swirl guide post 632. This allows the liquid preparation output upwards from the infusion tube 61 to flow directly into the bottom of the swirl guide post 632. Multiple spiral guide grooves on the surface of the swirl guide post 632 guide the originally linearly flowing liquid to a high-speed swirling state. When the high-speed rotating liquid preparation reaches the atomizing chip 631 at the top, it is torn into uniformly sized fine droplets by the micron-level nozzles within the atomizing chip 631. These droplets are then evenly deposited on various locations of the nasal mucosa by the subsequent pushing airflow, achieving a better spray effect.

[0045] In some embodiments, the outer periphery of the top of the infusion tube 61 is provided with a groove 611, and correspondingly, a protrusion 633 is provided on the inner wall of the spray head 63 that corresponds to and matches the groove 611. During assembly, the infusion tube 61 is simply inserted into the bottom of the spray head 63, and the groove 611 and the protrusion 633 are used to complete the snap-fit ​​fixation, which has the advantages of simple structure and convenient assembly. In addition, the infusion tube 61 is also provided with a ring of protruding ribs 612 below the groove 611. The protruding ribs 612 can be flexible silicone that protrudes outward. After the snap-fit ​​assembly is completed, the outer edge of the protruding ribs 612 can form an interference fit with the inner wall of the spray head 63 to form a continuous sealing structure, thereby blocking the path of leakage of liquid preparation from the gaps in the inner walls of the infusion tube 61 and the spray head 63, realizing the first layer of sealing protection and fixed connection.

[0046] In this spray module 6, the bottom of the spray head 63 is provided with a first edging 634, and the outer periphery of the infusion tube 61 is provided with a second edging 613 located below the first edging 634. The end faces of the two edgings are fitted and aligned. Then, an aluminum shell 64 can be used to completely cover and tighten the two edgings from the outside. The first edging 634 and the second edging 613 are firmly pressed together into a single structure through stamping deformation, thereby sealing and locking the connection position of the two parts, thus improving the sealing performance. Even under great axial tensile force, the spray head 63 and the infusion tube 61 are not easy to separate. At the same time, the rigid clamping force of the aluminum shell 64 can compact the mating surfaces of the two edgings, making it difficult for leakage gaps to occur. The combination of double sealing improves the reliability of the sealing of the spray module 6 head and reduces the problem of drug leakage during long-term use.

[0047] In some embodiments, guide plates 211 are provided on both sides of the adapter cover 21, and guide grooves 13 extending axially are provided on both sides of the assembly chamber 1b. The height of the guide grooves 13 covers the entire vertical sliding stroke of the adapter cover 21. The guide plates 211 can be embedded in the guide grooves 13, forming a sliding fit relationship to ensure that the entire sliding process always moves vertically along the axial direction without radial deviation. On the other hand, the circumferential side of the guide grooves 13 forms a circumferential limit on the guide plates 211, thereby restricting the circumferential rotational freedom of the adapter cover 21. When the user rotates the medicine bottle 3 to tighten or loosen it, the adapter cover 21 is stuck by the guide plates 211 and will not rotate with it. The user only needs to hold the nasal spray body 1 with one hand and rotate the medicine bottle 3 with the other hand to easily complete the disassembly and assembly operation. The whole operation process is extremely convenient and quick, solving the problem that the pump assembly 2 cannot be tightened by spinning empty along with the medicine bottle 3.

[0048] In some embodiments, the medicine bottle 3 may be made of transparent medical PETG material, with clear capacity markings on the surface of the bottle so that users can intuitively observe the remaining liquid volume inside and avoid the problem of empty pump operation.

[0049] refer to Figure 2 and Figure 5 As shown, in some embodiments, the nose support 4 and / or the mouth support 5 are connected to the nasal spray body 1 via a detachable structure 8, so that the user can disassemble and clean them, avoiding the accumulation of dirt and bacterial growth during long-term reuse, which would affect hygienic use.

[0050] Specifically, the detachable structure 8 includes an extension portion 81, an outer casing 82, and a docking portion 83. The extension portion 81 is an annular flange structure integrally extended outward from the top opening and / or side opening of the nasal spray body 1. The extension portion 81 is provided with a slot 811, which is recessed inward along the radial direction of the outer edge for subsequent positioning and engagement with the outer casing 82. The outer packaging component 82 is an independent annular part that fits around the outer periphery of the outer extension portion 81. The inner wall of the outer packaging component 82 has an inwardly protruding snap-fit ​​portion 821 and a hook portion 822 extending towards the nasal spray body 1. During assembly, simply slip the outer packaging component 82 onto the outer extension portion 81 from the outside and gently press it inward to engage the snap-fit ​​portion 821 into the snap-fit ​​groove 811 of the outer extension portion 81, thus securing the two components. After installation, the hook portion 822 of the outer packaging component 82 will precisely create an annular groove between itself and the outer end face of the outer extension portion 81. This groove forms the anti-detachment groove 84, which is subsequently assembled. In this application, both the outer extension portion 81 and the outer packaging component 82 are molded from rigid materials, such as rigid plastic, to ensure the stability and firmness of the assembled anti-detachment groove 84 structure. The mating part 83 is formed on the assembly end of the nose support 4 and / or the mouth support 5, and the mating part 83 is provided with an outwardly protruding anti-detachment part 831 and an inwardly recessed hook groove 832. When assembling the nose support 4 and / or the mouth support 5, the anti-detachment part 831 of the mating part 83 is engaged into the previously formed anti-detachment groove 84, and the groove is engaged into the hook part 822 of the outer package 82, thereby achieving dual anti-detachment positioning in both radial and axial directions. In this application, the mating part 83 and the nose support 4 and / or the mouth support 5 are preferably integrally formed with a flexible material, such as medical-grade silicone, to facilitate assembly operations.

[0051] After assembly, the snap-fit ​​part 821 of this detachable structure 8 is connected to the slot 811, and the hook part 822 is connected to the hook slot 832. At the same time, the hook part 822 and the extension part 81 cooperate to form an anti-detachment groove 84. The anti-detachment part 831 is connected to the anti-detachment groove 84, and the components are locked together, so that the nose support 4 or the mouth support 5 cannot be easily pulled out directly from the nasal spray body 1. Only through a specific disassembly operation can the two be separated to ensure that there will be no accidental detachment during use.

[0052] Specifically, when cleaning the nose support 4 or mouth support 5 is required, the user can pry open the strip groove 823 on the outside of the outer packaging 82 to separate the locking part 821 from the locking groove 811. Then, move the outer packaging 82 toward the docking part 83 to disassemble the anti-detachment groove 84. At this time, the docking part 83 can be pulled out of the anti-detachment groove 84 with just a little force. At this time, the three parts, the outer extension 81, the outer packaging 82, and the docking part 83, are independent of each other. The anti-detachment groove 84, which was originally combined, is completely disassembled into two independent surfaces, and all the corners are exposed. The user can easily clean every part with a brush, which makes it less likely for reagent residue and dirt to accumulate. This truly achieves comprehensive cleaning without dead corners and avoids the hygiene hazards of traditional integrated grooves that trap dirt.

[0053] refer to Figure 2 As shown, in some embodiments, the anti-detachment part 831 has a mushroom-shaped structure, including an integrally connected cover part 8311 and a handle part 8312; the anti-detachment groove 84 has an assembly opening 841. The outer diameter of the cover part 8311 is designed to be larger than the diameter of the assembly opening 841, and the outer diameter of the handle part 8312 is designed to be less than or equal to the diameter of the assembly opening 841. When the mushroom-shaped anti-detachment part 831 is pressed into the anti-detachment groove 84, the flexible silicone material can undergo slight elastic deformation, allowing the larger cover part 8311 to be smoothly squeezed into the anti-detachment groove 84 from the smaller assembly opening 841. After entering the groove, the cover part 8311 returns to its original shape and can be stuck inside the anti-detachment groove 84, preventing it from being directly removed, thus achieving the anti-detachment positioning function.

[0054] Furthermore, when the cap 8311 enters the anti-detachment groove 84, its arc-shaped surface at least partially adheres to the inner wall of the anti-detachment groove 84, thereby forming at least one complete surface seal to block the path of gas leakage from the connection gap. In addition, an annular sealing rib 85 is formed on the outer end face of the extension 81 or the inner end face of the hook portion 822. When the anti-detachment portion 831 is engaged, the sealing rib 85 will compress the surface of the silicone handle portion 8312 to form a continuous line seal, adding another layer of sealing on top of the surface seal. Even if a small leakage gap accidentally occurs at the surface seal position, the line seal can block the leakage path of the airflow. After the double seal combination, the airtightness of the entire connection position is better, thereby avoiding the loss of aerodynamic force and ensuring that the airflow pushing force is fully applied to the atomized preparation.

[0055] refer to Figure 6 As shown, the mouthpiece 5 is provided with an anti-blocking strip 51 extending along the air blowing channel. The anti-blocking strip 51 can be integrally formed with the mouthpiece 5 to prevent the channel of the mouthpiece 5 from being blocked, ensuring that the airflow can flow smoothly to the air pressure chamber 1a when the user blows air, thereby improving the fault tolerance and reliability of the device.

[0056] Or as Figure 2As shown, the nasal spray device is used as follows: Before operation, the user can screw the pre-filled liquid preparation bottle 3 onto the adapter cap 21, insert the nasal support 4 into one nostril, hold the mouth support 5 in their mouth, and adjust the posture. Just before blowing, hold the nasal spray body 1 with one hand and push the bottom of the exposed bottle 3 upwards with the thumb. The bottle 3 drives the pump assembly 2 to move upwards, which in turn actuates the pump unit 22 to deliver a single dose of liquid preparation through the infusion tube 61 to the spray head 63 to atomize it into fine mist. The upward thrust of the droplets (nebulized preparation) causes the infusion tube 61 to move upward against the elastic force of the spring 625, and the sealing plate 624 leaves the upper end face of the second ring platform 12, causing the airflow channel to open. The airflow blown out of the mouthpiece 5 enters the pressure chamber 1a and flows out at high speed from the opened annular airflow channel, enveloping the nebulized preparation and pushing it into the depth of the nasal cavity at a stable speed. At the same time, the user's blowing action will naturally cause the soft palate to rise and close the nasopharyngeal passage. The nebulized preparation will be deposited directionally inside the nasal cavity and will not flow into the esophagus or airway. After the force of pushing the medicine bottle 3 is released, the spring 625 automatically drives the entire switch structure 62 to return to its downward position, and the sealing plate 624 re-seals the airflow channel, completing the entire operation process.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention without departing from the principles and spirit of the invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A nasal spray device, characterized in that, include: The nasal spray body (1) has an internal pressure chamber (1a) and an assembly chamber (1b). Pump assembly (2), movably disposed within the assembly chamber (1b), the pump assembly (2) includes a transfer cover (21) and a pressure pump unit (22) disposed within the transfer cover (21). The medicine bottle (3) is connected to the adapter cap (21) and its bottom extends to the bottom of the nasal spray body (1); The nose support (4) and mouth support (5) are respectively disposed on the top and side of the nasal spray body (1), and the mouth support (5) is connected to the air pressure chamber (1a). The spray module (6) is disposed in the nose support (4), and its lower end passes through the air pressure chamber (1a) and is connected to the pressure pump unit (22). In the initial state, the spray module (6) closes the airflow channel between the air pressure chamber (1a) and the nose support (4); In operation, the medicine bottle (3) actuates the pump unit (22) and causes the spray module (6) to open the airflow channel, while a dose of liquid preparation is atomized and sprayed outward from the nose pad (4).

2. The nasal spray device according to claim 1, characterized in that, The nasal spray body (1) is provided with a first ring platform (11) and a second ring platform (12) arranged from bottom to top to separate the internal space to form the air pressure chamber (1a) and the assembly chamber (1b). The pump assembly (2) is always sealed to the first ring platform (11), and the spray module (6) is selectively sealed to the second ring platform (12) to control the opening or closing of the airflow channel.

3. The nasal spray device according to claim 2, characterized in that, The first ring platform (11) has a first groove on its inner side, and a sealing ring (7) is provided in the first groove. The sealing ring (7) is sealed to the adapter cover (21).

4. The nasal spray device according to claim 2, characterized in that, The spray module (6) includes an infusion tube (61), and a switch structure (62) is provided in the middle of the infusion tube (61). The switch structure (62) has a first step (621), a second step (622), and a third step (623) with increasing outer diameters from top to bottom; wherein, A second groove is provided on the first step (621), and a sealing sheet (624) is provided in the second groove. The outer diameter of the sealing sheet (624) is larger than the inner diameter of the second ring platform (12). The outer diameter of the vertical portion of the second step (622) is smaller than the inner diameter of the second ring platform (12) to form an airflow gap, and the outer diameter of the horizontal portion is larger than the inner diameter of the second ring platform (12) to form a stop structure. A spring (625) is provided between the third step (623) and the second ring platform (12), and in the initial state, the sealing plate (624) seals the second ring platform (12) under the action of the spring (625).

5. The nasal spray device according to claim 1, characterized in that, The adapter cap (21) and the medicine bottle (3) are fixed together by a threaded detachable connection.

6. The nasal spray device according to claim 5, characterized in that, The adapter cover (21) is provided with guide plates (211) on both sides, and the assembly compartment (1b) is provided with guide grooves (13) on both sides. The guide grooves (13) slide with the guide plates (211) and restrict the circumferential rotation of the adapter cover (21).

7. The nasal spray device according to claim 1, characterized in that, The nose support (4) and / or the mouth support (5) are connected to the nasal spray body (1) via a detachable structure (8).

8. The nasal spray device according to claim 7, characterized in that, The detachable structure (8) includes: An extension portion (81) is provided on the top and / or side of the nasal spray body (1), and a slot (811) is provided on the extension portion (81). The outer packaging (82) is disposed on the outer periphery of the extension (81), and the inner side of the outer packaging (82) is provided with a snap-fit ​​part (821) and a claw part (822). The docking part (83) is provided at the assembly end of the nose support (4) and / or the mouth support (5), and the docking part (83) is provided with an anti-detachment part (831) and a hook groove (832). The snap-fit ​​part (821) is connected to the snap-fit ​​groove (811), the hook part (822) is connected to the hook groove (832), and the hook part (822) and the extension part (81) cooperate to form an anti-detachment groove (84), and the anti-detachment part (831) is connected to the anti-detachment groove (84).

9. The nasal spray device according to claim 8, characterized in that, The anti-detachment part (831) has a mushroom-shaped structure, including a cap (8311) and a handle (8312) that are integrated together. The anti-detachment groove (84) has an assembly opening (841), the outer diameter of the cover (8311) is larger than the diameter of the assembly opening (841), and the outer diameter of the handle (8312) is smaller than or equal to the diameter of the assembly opening (841).

10. The nasal spray device according to claim 9, characterized in that, The cover (8311) forms at least one surface seal within the anti-detachment groove (84); And / or, the outer end face of the extension portion (81) or the inner end face of the claw portion (822) is provided with a sealing rib (85), and the sealing rib (85) interferes with the handle portion (8312) to form a line seal.

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