Side pressing nasal spray device

Abstract

The invention provides a side pressing nasal spray device which comprises an outer shell, a bottle body, an air inlet assembly, a liquid inlet assembly and a liquid outlet assembly, the bottle body is used for storing medicaments, the air inlet assembly, the liquid inlet assembly and the liquid outlet assembly are all arranged in the outer shell, the air inlet assembly is connected to the top of the bottle body, and the liquid outlet assembly is connected to the bottom of the bottle body. The liquid outlet assembly, the liquid inlet assembly and the air inlet assembly are sequentially connected from top to bottom; the air inlet assembly is communicated with the bottle body and the liquid inlet assembly through a liquid guide pipe. The technical problems that a gas channel and a liquid channel of a traditional nasal spraying device are not separated, and the operation mode is inconvenient are solved.

Description

[0001] This application claims priority to Chinese Patent Application No. 202510861788.3, ​​filed on June 25, 2025, entitled "A Side-Press Nasal Spray Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of nasal spray drug delivery technology, and more specifically to a side-press nasal spray device. Background Technology

[0003] Currently, conventional nasal spray devices on the market generally suffer from the following technical defects: First, the lack of a separate air-liquid channel design in traditional nasal spray pumps makes the medication susceptible to contamination. Specifically, the air intake and liquid output share the same passage. When the pressure inside and outside the bottle is balanced, external air directly enters the bottle in the reverse direction through the liquid output channel. Bacteria carried in the air (such as Staphylococcus aureus and Escherichia coli) can easily mix with the medication, causing contamination and affecting the efficacy and safety of the drug. Second, traditional devices rely on vertical pressing operation, requiring users to apply force with multiple fingers (such as using the index and middle fingers to hold the nozzle and press). This requires significant force and can easily cause relative displacement between the nozzle and the nasal cavity, affecting the accuracy of drug delivery. In addition, the vertical force direction is consistent with the spray direction, making the nozzle prone to shaking during pressing, further reducing the accuracy of drug delivery. Third, the connection structure between the nozzle and the pump core in traditional devices is not stable enough, which poses a risk of nozzle detachment. In addition, the vertical pressing design does not restrict the direction of the triggering force. Accidental contact or dropping of the device can easily trigger the spray due to external force, resulting in residual liquid contaminating the nozzle or dust cover. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art and provide a side-press nasal spray device, which aims to solve the technical problems caused by the lack of separation of gas and liquid channels and the inconvenience of operation in traditional nasal spray devices.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A side-press nasal spray device includes: a housing, a bottle, an air inlet assembly, a liquid inlet assembly, and a liquid outlet assembly. The bottle is used to store the medication. The air inlet assembly, the liquid inlet assembly, and the liquid outlet assembly are all disposed within the housing. The air inlet assembly is connected to the top of the bottle, and the liquid outlet assembly, the liquid inlet assembly, and the air inlet assembly are connected sequentially from top to bottom. The air inlet assembly connects the bottle and the liquid inlet assembly via a liquid guide tube. The liquid inlet assembly includes a piston assembly and a liquid inlet body. The piston assembly is slidably connected to the liquid inlet body and the side wall of the outer shell. The liquid inlet body is provided with a liquid suction channel, a first liquid storage tank and a liquid guiding channel connected in sequence. The liquid suction channel is connected to the air inlet assembly. The extension direction of the first liquid storage tank is perpendicular to the side wall of the outer shell. The liquid guiding channel is connected to the liquid outlet assembly.

[0006] In one embodiment, the piston assembly includes a pressing cap, a piston member, and an elastic member. The pressing cap is fixedly connected to the piston member, and one end of the elastic member is connected to the piston member and the other end is connected to the liquid inlet body. Pressing the pressing cap causes the piston member to slide along the first liquid storage tank. A second liquid storage tank is provided at one end of the piston member near the liquid inlet body. The liquid suction channel, the first liquid storage tank, the second liquid storage tank, and the liquid guiding channel are connected in sequence.

[0007] In one embodiment, the piston is embedded in the press cover, the press cover is provided with a hook portion, the piston is provided with a locking portion, and the hook portion is locked into the locking portion.

[0008] In one embodiment, the liquid dispensing assembly includes a nozzle and a liquid dispensing valve. The nozzle is connected to the top of the housing and has a liquid dispensing groove inside. The liquid dispensing valve is movably assembled in the liquid dispensing groove.

[0009] In one embodiment, the liquid outlet valve includes a valve body column and a movable spring. One end of the movable spring is connected to the liquid inlet assembly, and the other end is connected to the inside of the valve body column, so as to drive the valve body column to move up and down inside the nozzle. The outer wall of the valve body column and the inner wall of the nozzle form a liquid outlet channel, and the liquid outlet channel is connected to the liquid inlet assembly.

[0010] In one embodiment, when there is no liquid pressure in the liquid outlet channel, the valve body column is in an upward state, and the upper end of the valve body column blocks the upper end of the liquid outlet channel and the nozzle of the spray head; When there is liquid pressure in the outlet channel, the valve body column is in a downward state, and the upper end of the outlet channel is connected to the nozzle.

[0011] In one embodiment, the liquid inlet body extends upward and is provided with a first connecting wall, and the nozzle is provided with a first connecting groove, wherein the first connecting wall is engaged in the first connecting groove.

[0012] In one embodiment, the air intake assembly includes a snap-on cap and a filter unit. The snap-on cap is connected to the top of the bottle body, and the filter unit is disposed inside the snap-on cap. The snap-on cap includes a connecting portion and a functional portion. The connecting portion extends outward and downward from the bottom of the functional portion. The connecting portion includes a second connecting wall and a sealing post extending downward from the top of the second connecting wall. The sealing post is disposed inside the second connecting wall. A first buckle is provided on the inner wall of the second connecting wall, and a second buckle is provided on the outer circumferential surface of the bottle body. The first buckle is engaged with the second buckle, and the outer wall of the sealing post abuts against the inner wall of the bottle body. The functional portion includes a third connecting wall and a filter unit disposed within the third connecting wall. The filter unit communicates with the sealing post.

[0013] In one embodiment, a first air inlet is provided between the piston assembly and the outer casing, and a second air inlet is provided between the liquid inlet body and the third connecting wall; a second connecting groove is formed between the third connecting wall and the filter section, and a fourth connecting wall extends downward from the liquid inlet body, with a third air inlet provided between the fourth connecting wall and the second connecting groove; an air inlet hole is provided on the side wall of the filter section, and the filter unit is disposed inside the filter section; the first air inlet, the second air inlet, the third air inlet, the air inlet hole, the filter section, the sealing column, and the bottle body are sequentially connected.

[0014] In one embodiment, the top of the connecting portion extends downward to provide a liquid inlet column, the two ends of the liquid inlet column are respectively connected to the bottle body and the liquid inlet assembly, and the liquid guide tube is embedded in the liquid inlet column so that the bottle body is connected to the liquid inlet assembly via the liquid guide tube.

[0015] The present invention also provides a side-press nasal spray device, comprising: a liquid inlet assembly, the liquid inlet assembly including a piston assembly and a liquid inlet body, the piston assembly being slidably connected to the liquid inlet body, the liquid inlet body being provided with a liquid suction channel, a first liquid storage tank and a liquid guiding channel connected in sequence, the first liquid storage tank being pre-stored with medicine; The piston assembly slides laterally, squeezing the pre-stored medicine in the first storage tank into the liquid guiding channel; the piston assembly resets, creating a vacuum negative pressure in the first storage tank, and the liquid suction channel draws in new medicine and temporarily stores it in the first storage tank.

[0016] The beneficial effects of this invention compared to existing technologies are as follows: Multiple optimizations are achieved through the physical separation of the liquid inlet component and the air inlet component, along with a side-press operation design. The air inlet component is connected to the bottle body via an independent liquid guide tube, allowing external gas to balance the internal pressure through an independent channel. The liquid inlet component forms a liquid delivery path through a closed suction channel, a first liquid storage tank, and a liquid guide channel. The two components are completely isolated, effectively preventing airborne bacteria from mixing into the liquid and ensuring its sterility. Simultaneously, the side-press design, through the lateral sliding connection between the piston assembly and the side wall of the outer shell, allows the user to trigger the spray with a single finger push. This operation is effortless, and the force applied is perpendicular to the spray direction, preventing nozzle displacement and improving drug delivery accuracy. Furthermore, the lateral pressure requires active driving of the piston assembly to slide, preventing accidental spraying due to accidental contact or drops. Combined with the gas-liquid separation structure, this reduces component friction, enhances the mechanical stability of the nozzle and pump core, and prevents the risk of dislodgement.

[0017] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a side-press nasal spray device provided by the present invention; Figure 2 An exploded schematic diagram of a side-press nasal spray device provided by the present invention; Figure 3 A schematic diagram of the structure of a side-press nasal spray device after removing the dust cover, provided by the present invention; Figure 4 A cross-sectional schematic diagram of the initial state of a side-press nasal spray device provided by the present invention; Figure 5 A partial schematic diagram of the gas-liquid path in the piston assembly reset state of a side-press nasal spray device provided by the present invention; Figure 6 A cross-sectional schematic diagram of a side-press nasal spray device in a pressed state, provided by the present invention; Figure 7 A partial schematic diagram of the liquid path in the ejection state of the piston assembly of a side-press nasal spray device provided by the present invention. Figure 8 A schematic diagram of the piston component of a side-press nasal spray device provided by the present invention; Figure 9 Another schematic diagram of the piston component of a side-press nasal spray device provided by the present invention; Figure 10 A cross-sectional schematic diagram of the piston component of a side-press nasal spray device provided by the present invention; Figure 11 for Figure 10 Enlarged view of part A; Figure 12 A schematic diagram of the liquid inlet body of a side-press nasal spray device provided by the present invention; Figure 13 Another structural schematic diagram of the liquid inlet body of a side-press nasal spray device provided by the present invention; Figure 14 for Figure 13 Enlarged view of part B; Figure 15 A cross-sectional schematic diagram of the liquid inlet body of a side-press nasal spray device provided by the present invention; Figure 16 A cross-sectional schematic diagram of a side-press nasal spray device with a concealed liquid outlet valve in the nozzle, provided by the present invention. Figure 17 A cross-sectional schematic diagram of the initial state of a side-press nasal spray device provided by the present invention; Figure 18 for Figure 17 Enlarged view of part C; Figure 19 A cross-sectional schematic diagram of a side-press nasal spray device in a pressed state, provided by the present invention; Figure 20 for Figure 19 Enlarged view of part D; Figure 21 A partial schematic diagram of the flow path of the medicine liquid in the pressed state of a side-press nasal spray device provided by the present invention; Figure 22 A cross-sectional schematic diagram of the unsealing part of a side-press nasal spray device provided by the present invention when it is unsealed under the pressing state; Figure 23 A partial schematic diagram of the exhaust path of compressed gas in the pressed state of a side-press nasal spray device provided by the present invention; Figure 24 A partial schematic diagram of the liquid suction path and air replenishment path of a side-press nasal spray device in the reset state, provided by the present invention; Figure Labels 1. Outer shell; 2. Bottle body; 21. Second buckle; 3. Air intake assembly; 31. Press-fit cover; 311. Connecting part; 3111. Second connecting wall; 3112. Sealing column; 3113. First snap-fit; 3114. Liquid inlet column; 312. Functional part; 3121. Third connecting wall; 3122. Filter part; 3123. Air inlet; 32. Filter unit; 321. Filter sleeve; 322. Antibacterial membrane; 323. Inner filter ring; 33. First air inlet channel; 34. Second air inlet channel; 35. Second connecting groove; 36. Third air inlet channel; 4. Liquid inlet assembly; 41. Piston assembly; 411. Press cap; 4111. Hook; 412. Piston component; 4121. Second liquid storage tank; 41211. Second outer tank; 41212. Second inner tank; 41213. Second sealing body; 41214. Unsealing part; 4122. Snap-fit ​​part; 413. Elastic element; 42. Liquid inlet body; 421. Liquid suction channel; 422. First liquid storage tank; 4221. First outer tank; 4222. First inner tank; 4223. First sealing body; 423. Liquid guiding channel; 424. First connecting wall; 425. Fourth connecting wall; 426. Air outlet gap; 5. Liquid dispensing assembly; 51. Nozzle; 511. Liquid dispensing tank; 512. Liquid dispensing channel; 513. First connecting groove; 514. Nozzle; 52. Liquid dispensing valve; 521. Valve body column; 522. Movable spring; 6. Dust cover; 7. Liquid guide tube. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0022] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0024] See Figures 1 to 7As shown in the figure, an embodiment of the present invention discloses a side-press nasal spray device, including: an outer shell 1, a bottle 2, an air inlet assembly 3, a liquid inlet assembly 4, and a liquid outlet assembly 5. The bottle 2 is used to store the medicine. The air inlet assembly 3, the liquid inlet assembly 4, and the liquid outlet assembly 5 are all disposed inside the outer shell 1. The air inlet assembly 3 is connected to the top of the bottle 2. The liquid outlet assembly 5, the liquid inlet assembly 4, and the air inlet assembly 3 are connected sequentially from top to bottom. The air inlet assembly 3 connects the bottle 2 and the liquid inlet assembly 4 through a liquid guide tube 7. The liquid inlet assembly 4 includes a piston assembly 41 and a liquid inlet body 42. The piston assembly 41 is slidably connected to the liquid inlet body 42 and the side wall of the outer shell 1. The liquid inlet body 42 is provided with a liquid suction channel 421, a first liquid storage tank 422 and a liquid guiding channel 423 connected in sequence. The liquid suction channel 421 is connected to the air inlet assembly 3. The extension direction of the first liquid storage tank 422 is perpendicular to the side wall of the outer shell 1. The liquid guiding channel 423 is connected to the liquid outlet assembly 5.

[0025] Specifically, gas-liquid separation and lateral pressing operation are achieved through a modular, layered layout. The outer casing 1 integrates a liquid outlet assembly 5, a liquid inlet assembly 4, and an air inlet assembly 3. The liquid inlet assembly 4 includes a piston assembly 41 and a liquid inlet body 42. The liquid inlet body 42 contains a liquid suction channel 421, a first liquid storage tank 422, and a liquid guiding channel 423, forming an independent liquid delivery path. The air inlet assembly 3 connects the bottle body 2 and the liquid inlet assembly 4 via a liquid guiding pipe 7, allowing filtered external air to be added to the bottle body 2, physically isolated from the liquid delivery channel. When the user presses the liquid inlet assembly 4 on the side wall of the outer casing 1, the piston assembly 41 slides laterally perpendicular to the outer casing 1, sealing the inlet of the first liquid storage tank 422. The liquid pre-stored in the first liquid storage tank 422 and the piston assembly 41 is squeezed into the liquid guiding channel 423, enters the liquid outlet assembly 5, and is ejected. After the user releases the liquid inlet assembly 4, the piston assembly 41 resets, and a vacuum negative pressure is formed in the first liquid storage tank 422. New medicine is drawn from the bottle body 2 through the liquid suction channel 421 and temporarily stored in the first liquid storage tank 422 and the piston assembly 41. At the same time, air is replenished into the bottle body 2 through the air intake assembly 3.

[0026] Understandably, by employing a lateral sliding connection structure between the piston assembly 41 and the side wall of the outer casing 1, the user only needs to use a single finger to push the piston assembly 41 laterally against the outer wall of the outer casing 1 to trigger the spray. The direction of force is perpendicular to the spray direction, completely eliminating the problem of relative displacement between the nozzle 51 and the nasal cavity caused by traditional vertical pressing, ensuring accurate drug delivery. The lateral force application action conforms to the natural grip posture of the human body, reducing the operating force and increasing user comfort. At the same time, lateral pressure requires active driving of the piston assembly 41 to slide. When the device is placed naturally, the side wall of the outer casing 1 is rigidly supported by the bottle body 2, and external force cannot be directly transmitted to the internal components, reducing the risk of accidental spraying caused by accidental touch or drop. Meanwhile, the air inlet assembly 3 and the liquid inlet assembly 4 are connected to the bottle body 2 through different paths, and the air-liquid channels are physically isolated to prevent bacterial air from contaminating the liquid. Lateral force application avoids displacement of the nozzle 51, improving operational stability.

[0027] In one embodiment, the piston assembly 41 includes a pressing cover 411, a piston member 412, and an elastic member 413. The pressing cover 411 is fixedly connected to the piston member 412. One end of the elastic member 413 is connected to the piston member 412, and the other end is connected to the liquid inlet body 42. By pressing the pressing cover 411, the piston member 412 is slidably connected along the first liquid storage tank 422. A second liquid storage tank 4121 is provided at one end of the piston member 412 near the liquid inlet body 42. The liquid suction channel 421, the first liquid storage tank 422, the second liquid storage tank 4121, and the liquid guiding channel 423 are sequentially connected.

[0028] Specifically, the piston assembly 41 adopts an elastic reset structure. The segmented storage and delivery of the liquid medicine is achieved through the linkage between the pressing cap 411 and the piston 412. The second storage tank 4121 and the first storage tank 422 are connected in series to form a "two-stage buffer chamber," reducing the impact of liquid flow. When the user presses the pressing cap 411, the piston 412 compresses the elastic element 413 and slides into the liquid inlet body 42. At this time, the second storage tank 4121 and the first storage tank 422 are connected. The liquid medicine is delivered sequentially through the first storage tank 422, the second storage tank 4121, and the liquid guiding channel 423 after being squeezed by the piston 412. After the user releases the pressing cap 411, the elastic element 413 rebounds, the piston 412 resets, and the first storage tank 422 and the second storage tank 4121 simultaneously form a negative pressure to draw in and store the liquid medicine. It can be understood that the elastic element 413 in this embodiment is a reset spring.

[0029] In one embodiment, the piston 412 is embedded in the press cover 411, the press cover 411 is provided with a hook portion 4111, the piston 412 is provided with a locking portion 4122, and the hook portion 4111 is locked to the locking portion 4122.

[0030] Specifically, the press cover 411 is fitted with a piston 412. The inner side of the press cover 411 is provided with a hook 4111, and the outer wall of the piston 412 is provided with a locking part 4122. The two are locked together by a beveled locking. The mechanical interlock ensures that the press cover 411 and the piston 412 move synchronously, thus ensuring the working stability of the nasal spray device.

[0031] In one embodiment, the liquid dispensing assembly 5 includes a nozzle 51 and a liquid dispensing valve 52. The nozzle 51 is connected to the top of the outer casing 1, and a liquid dispensing groove 511 is provided inside the nozzle 51. The liquid dispensing valve 52 is movably assembled in the liquid dispensing groove.

[0032] Specifically, the liquid dispensing assembly 5 adopts a separate design for the nozzle 51 and the dispensing valve 52. The nozzle 51 has a dispensing tank 511 for conveying the liquid and assembling the dispensing valve 52, enabling dynamic opening and closing control. The separate structure facilitates maintenance and replacement, and reduces residual contamination. After the liquid enters the dispensing tank 511 through the liquid guiding channel 423, the liquid pressure pushes the dispensing valve 52 to open; after spraying is completed, the dispensing valve 52 closes in a pressure-free state, preventing the backflow of the liquid. The design capacity of the dispensing tank 511 controls the dosage of a single administration, while the separate design reduces the risk of cross-contamination.

[0033] In one embodiment, the liquid outlet valve 52 includes a valve body column 521 and a movable spring 522. One end of the movable spring 522 is connected to the liquid inlet assembly 4, and the other end is connected to the inside of the valve body column 521, so as to drive the valve body column 521 to move up and down within the nozzle 51. The outer wall of the valve body column 521 and the inner wall of the nozzle 51 form a liquid outlet channel 512, which is connected to the liquid inlet assembly 4.

[0034] Specifically, the spraying is controlled by the dynamic balance mechanism of the valve body column 521 and the movable spring 522, through the difference between the hydraulic pressure and the spring force. When the liquid pressure is greater than the spring preload, the valve body column 521 moves downward to open the liquid outlet channel 512, allowing the liquid to be sprayed from the nozzle 51. When the liquid pressure is released, the spring returns to its original position, pushing the valve body column 521 upward to seal the nozzle 514. This dynamic opening and closing control based on liquid pressure effectively avoids accidental spraying due to low pressure or leakage due to high pressure.

[0035] In one embodiment, when there is no liquid pressure in the liquid outlet channel 512, the valve body column 521 is in an upward state, and the upper end of the valve body column 521 blocks the upper end of the liquid outlet channel 512 and the nozzle 514 of the spray head 51. When there is liquid pressure in the liquid outlet channel 512, the valve body column 521 is in a downward state, and the upper end of the liquid outlet channel 512 is connected to the nozzle 514.

[0036] Specifically, the spray start / stop control is achieved through the dynamic balance between liquid pressure and spring force, and the opening and closing of the liquid outlet channel 512 is adjusted by the vertical displacement of the valve body column 521. When the user presses the press cap 411, the liquid enters the liquid outlet channel 512 from the first liquid storage tank 422, the second liquid storage tank 4121, and the liquid guide channel 423. The pressure of the liquid entering the liquid outlet channel 512 overcomes the spring force, pushing the valve body column 521 downward. The upper end of the liquid outlet channel 512 connects with the nozzle 514, and the liquid is atomized and sprayed out through the annular gap. When the user releases the press cap 411, the liquid pressure disappears, and the spring force of the movable spring 522 pushes the valve body column 521 upward, causing its upper end to tightly seal the upper end of the liquid outlet channel 512 and the nozzle 514 of the spray head 51, blocking the flow of liquid.

[0037] In one embodiment, the liquid inlet body 42 extends upward and is provided with a first connecting wall 424, and the nozzle 51 is provided with a first connecting groove 513, the first connecting wall 424 being engaged within the first connecting groove 513. Specifically, the first connecting wall 424 and the first connecting groove 513 are elastically engaged to achieve quick disassembly of the nozzle 51. During installation, the first connecting wall 424 is deformed by compression and then inserted into the second connecting groove 35; during disassembly, a reverse force is applied to make the connecting wall elastically recover and disengage.

[0038] In one embodiment, the air intake assembly 3 includes a snap-on cover 31 and a filter unit 32. The snap-on cover 31 is connected to the top of the bottle body 2, and the filter unit 32 is disposed inside the snap-on cover 31. The snap-on cover 31 includes a connecting portion 311 and a functional portion 312. The connecting portion 311 extends outward and downward from the bottom of the functional portion 312. The connecting portion 311 includes a second connecting wall 3111 and a sealing post 3112 extending downward from the top of the second connecting wall 3111. The sealing post 3112 is located within the second connecting wall 3111; a first buckle 3113 is provided on the inner wall of the second connecting wall 3111, and a second buckle 21 is provided on the outer circumferential surface of the bottle body 2. The first buckle 3113 is fastened to the second buckle 21, and the outer wall of the sealing post 3112 abuts against the inner wall of the bottle body 2; the functional part 312 includes a third connecting wall 3121 and a filter part 3122 located within the third connecting wall 3121, the filter part 3122 communicating with the sealing post 3112. Specifically, the multi-stage filtration unit 32 integrated within the snap cap 31 and the meandering air intake design prevent external bacteria-laden air from directly entering the bottle body 2, ensuring the sterility of the gas replenishment process. When the user releases the snap cap 411, the air intake component 3 enters the gas replenishment stage: the negative pressure inside the bottle draws in external air through the air intake component 3, which is then purified by the filtration unit 32 before entering the bottle body 2.

[0039] In one embodiment, a first air inlet 33 is provided between the piston assembly 41 and the outer casing 1, and a second air inlet 34 is provided between the liquid inlet body 42 and the third connecting wall 3121; a second connecting groove 35 is formed between the third connecting wall 3121 and the filter section 3122, and a fourth connecting wall 425 extends downward from the liquid inlet body 42, with a third air inlet 36 provided between the fourth connecting wall 425 and the second connecting groove 35; an air inlet 3123 is provided on the side wall of the filter section 3122, and the filter unit 32 is disposed inside the filter section 3122; the first air inlet 33, the second air inlet 34, the third air inlet 36, the air inlet 3123, the filter section 3122, the sealing column 3112, and the bottle body 2 are sequentially connected. Specifically, a complete airflow path is formed through a three-stage air intake, extending the contact time between air and the filter unit 32 and improving filtration efficiency. It is understood that gaps exist between the outer casing 1 and the press cap 411, between the outer casing 1 and the filter section 3122, and between the liquid inlet body 42 and the third connecting wall 3121. The liquid inlet body 42 and the third connecting wall 3121 surrounding the press cap 31 are designed as stepped surfaces. Outside air enters through a tiny gap into the first air inlet 3123 and connects with the filter section 3122. After being purified by the filter unit 32 of the filter section 3122, it is introduced into the bottle body 2 through the sealing column 3112. In other words, when the button is pressed, the gas is squeezed out from the bottle body 2 after passing through the liquid guide tube 7, the sealing part, the liquid inlet channel, the first liquid storage tank 422, the second liquid storage tank 4121, the liquid guide channel 423 and the liquid outlet channel 512 in sequence; when the button is pressed and rebounds, the gas is replenished into the bottle body 2 after passing through the first air inlet 33, the second air inlet 34, the third air inlet 36, the air inlet 3123, the filter part 3122 and the sealing column 3112 in sequence from the outside.

[0040] Furthermore, the filtration unit 32 includes a filter sleeve 321 tightly fitted within the filtration section 3122, a filter inner ring 323 tightly fitted within the filter sleeve 321, and an antibacterial membrane 322 fixed between the filter sleeve 321 and the filter inner ring 323. Specifically, the filter sleeve 321 serves as an outer support structure for fixing the filter inner ring 323 and the antibacterial membrane 322; the filter inner ring 323 is nested inside the filter sleeve 321, with its outer wall press-fitted to the inner wall of the filter sleeve 321 to ensure a gapless seal; the antibacterial membrane 322 is sandwiched between the filter sleeve 321 and the filter inner ring 323 and fixed by compression. It is understood that in this embodiment, the antibacterial membrane 322 is made of a breathable and waterproof material to filter bacteria in the air, ensuring the purity of the medicine solution after air enters the bottle 2.

[0041] In one embodiment, the top of the connecting part 311 extends downward to provide a liquid inlet column 3114, the two ends of the liquid inlet column 3114 are respectively connected to the bottle body 2 and the liquid inlet assembly 4, and the liquid guide tube 7 is embedded in the liquid inlet column 3114 so that the bottle body 2 is connected to the liquid inlet assembly 4 via the liquid guide tube 7.

[0042] Specifically, the liquid guide tube 7 is embedded in the liquid inlet column 3114, and the circumferential displacement of the liquid guide tube 7 is restricted by the liquid inlet column 3114 to avoid flow fluctuations or blockages caused by bending. It can be understood that the liquid inlet column 3114 connects the bottle body 2 and the liquid inlet assembly 4, that is, the top of the filter section 3122 is provided with the liquid outlet of the liquid inlet column 3114.

[0043] Furthermore, the nasal spray device in this embodiment also includes a dust cover 6. The dust cover 6 adopts a full-coverage design, which completely wraps and protects the entire liquid dispensing component 5 and the liquid inlet component 4. When the dust cover 6 is not removed, the user cannot access the drug dispensing button. Even in the event of a drop or impact, it can reliably protect the nozzle 51 and the pressing button, and will not trigger the spray, thereby preventing contamination of the nozzle 51.

[0044] In summary, the complete working process of a side-press nasal spray device in this embodiment is as follows: When the user presses the pressing cover 411 on the side wall of the outer casing 1, the piston assembly 41 slides laterally, sealing the inlet of the first liquid storage tank 422. The pre-stored liquid is squeezed into the liquid guiding channel 423 and then enters the liquid outlet channel 512 between the valve body column 521 and the nozzle 51. The liquid pressure pushes the valve body column 521 to move down and compress the movable spring 522, opening the nozzle 514 to form an atomized spray. After the user releases the press cap 411, the movable spring 522 resets and pushes the valve body column 521 upward to seal the nozzle 514. At the same time, the elastic element 413 in the piston assembly 41 resets, causing the first liquid storage tank 422 to generate negative pressure. New medicine is drawn from the bottle body 2 through the liquid suction channel 421 to replenish it. Meanwhile, the negative pressure inside the bottle draws in external air through the air intake assembly 3. The air flows through the three-stage air intake channel and the filter unit 32 to filter and trap bacteria. The clean air enters the bottle body 2 through the sealing column 3112 to balance the air pressure, ensuring that the medicine delivery and air pressure compensation are completed synchronously when the next press is made.

[0045] As stated above, with reference to Figures 1-24An embodiment of the present invention provides a side-press nasal spray device, comprising: a housing 1, a bottle 2, an air inlet assembly 3, a liquid inlet assembly 4, a liquid outlet assembly 5, a dust cover 6, and a liquid guide tube 7. The overall layout of the side-press nasal spray device is as follows: the air inlet assembly 3, the liquid inlet assembly 4, and the liquid outlet assembly 5 are all disposed within the housing 1; the liquid outlet assembly 5, the liquid inlet assembly 4, and the air inlet assembly 3 are connected sequentially from top to bottom; the air inlet assembly 3 is connected to the top of the bottle 2; the liquid guide tube 7 is disposed within the bottle 2; the top end of the liquid guide tube 7 passes through the air inlet assembly 3 and communicates with the liquid inlet assembly 4; and the dust cover 6 covers the outer periphery of the housing 1. The bottle 2 stores liquid medication, which can be sprayed out sequentially through the liquid guide tube 7, the liquid inlet assembly 4, and the liquid outlet assembly 5. External air can enter the bottle 2 through the air inlet assembly 3 to compensate for air pressure.

[0046] Specifically, the air intake assembly 3 includes a snap-on cover 31 and a filter unit 32; the liquid intake assembly 4 includes a piston assembly 41 and a liquid intake body 42, the liquid intake body 42 being provided with a liquid suction channel 421, a first liquid storage tank 422, and a liquid guiding channel 423 connected in sequence; and the liquid outlet assembly 5 includes a nozzle 51 and a liquid outlet valve 52. The assembly relationship of this device will be described below from bottom to top.

[0047] The bottle body 2 is located at the bottom of the device to support the entire device. The snap cap 31 is installed on the bottle mouth at the top of the bottle body 2. The liquid inlet body 42 is installed on the top of the snap cap 31, and the nozzle 51 is installed on the top of the liquid inlet body 42.

[0048] The snap-on cap 31 has a vertically penetrating liquid inlet column 3114. The bottom end of the liquid inlet column 3114 connects to the inside of the bottle body 2, and the top end of the liquid inlet column 3114 connects to the liquid suction channel 421 of the liquid inlet body 42. One end of the liquid guide tube 7 is embedded in the liquid inlet column 3114, and the other end of the liquid guide tube 7 is placed inside the bottle body 2. The liquid medicine in the bottle body 2 can flow to the liquid suction channel 421 through the liquid guide tube 7. In addition, the snap-on cap 31 also has an air inlet channel. The inlet of the air inlet channel connects to the outside, and the outlet of the air inlet channel connects to the inside of the bottle body 2. The air inlet channel is used to compensate for the air pressure inside the bottle body 2 by introducing external air. The air inlet channel can be directly and independently formed on the snap-on cap 31, or it can be formed by the snap-on cap 31 and the air inlet body, or it can be formed by the snap-on cap 31 body, the air inlet body, and the outer shell 1, or it can be formed by the snap-on cap 31 body, the air inlet body, and the outer shell 1. The structural form of the air inlet channel is diverse and is not limited here. Preferably, the air intake channel in this embodiment can be designed as a multi-stage, circuitous channel, such as the three-stage air intake channel described in the previous embodiment. These three stages are sequentially connected: a first air intake channel 33, a second air intake channel 34, and a third air intake channel 36. The first air intake channel 33 connects to the outside, and the third air intake channel 36 connects to the inside of the bottle body 2. A filter unit 32 is disposed within the snap-on cap 31 and is used to filter the air. The filter unit 32 can be disposed within the air intake channel or at the outlet of the air intake channel, as long as it ensures that the air is filtered by the filter unit 32. The circuitous, multi-stage air intake channel and the filter unit 32 design can prevent external bacteria-laden air from directly entering the bottle body 2, ensuring the sterility of the air replenishment process.

[0049] The air intake body includes a liquid suction channel 421, a first liquid storage tank 422, and a liquid guiding channel 423 connected in sequence. The liquid suction channel 421, the first liquid storage tank 422, and the liquid guiding channel 423 are arranged sequentially from bottom to top. The liquid suction channel 421 and the liquid guiding channel 423 are both arranged longitudinally along the device, while the first liquid storage tank 422 is arranged transversely along the device. The liquid suction channel 421 and the liquid guiding channel 423 are essentially channels formed on the air intake body 42. The lower end of the liquid suction channel 421 connects to the liquid guiding pipe 7, and the upper end of the liquid suction channel 421 extends transversely to the first liquid storage tank 422. The lower end of the liquid guiding channel 423 extends transversely to the first liquid storage tank 422, and the upper end of the liquid guiding channel 423 connects to the nozzle 51. The liquid medicine in bottle 2 passes through liquid guide tube 7, liquid suction channel 421, first liquid storage tank 422, and liquid guide channel 423 in sequence into nozzle 51, and is finally sprayed out through nozzle 51.

[0050] The piston assembly 41 includes a pressing cover 411, a piston member 412, and an elastic member 413. The pressing cover 411 is fixedly connected to the piston member 412, and is fixed on the side of the piston member 412 away from the liquid inlet body 42. The elastic member 413 is sleeved on the piston member 412, with one end of the elastic member 413 abutting against the piston member 412 and the other end abutting against the liquid inlet body 42. Pressing the pressing cover 411 causes the piston member 412 to slide laterally toward the liquid inlet body 42, and the elastic member 413 is in a compressed state. Releasing the pressing cover 411 resets the elastic member 413, and the piston member 412 slides laterally away from the liquid inlet body 42 under the elastic force of the elastic member 413.

[0051] The piston component 412 has a second liquid storage tank 4121 at one end near the liquid inlet body 42. The second liquid storage tank 4121 is connected to the first liquid storage tank 422, and the second liquid storage tank 4121 and the first liquid storage tank 422 together form a liquid storage cavity, in which the medicine can be pre-stored. Both the first liquid storage tank 422 and the second liquid storage tank 4121 have a double-cylinder structure.

[0052] Reference Figures 12-15 The first storage tank 422 includes a first outer tank 4221 and a first inner tank 4222. The first inner tank 4222 is an inner cylinder, and the first outer tank 4221 is an outer cylinder. The first inner tank 4222 is disposed inside the first outer tank 4221. The channel at the upper end of the suction channel 421 extends laterally into the first inner tank 4222, and the channel at the lower end of the guiding channel 423 extends laterally into the first outer tank 4221. That is, the liquid first enters the first inner tank 4222 from the suction channel 421, then flows out from the first inner tank 4222 into the first outer tank 4221, and then flows from the first outer tank 4221 into the guiding channel 423.

[0053] Reference Figures 8-11The second liquid storage tank 4121 includes a second outer tank body 41211 and a second inner tank body 41212. The second outer tank body 41211 is an outer cylinder, and the second inner tank body 41212 is an inner cylinder. The second inner tank body 41212 is disposed inside the second outer tank body 41211. The second outer tank body 41211 is fitted into the first outer tank body 4221. The outer wall of the second outer tank body 41211 is slidably connected to the inner wall of the first outer tank body 4221, and a first sealing body 4223 is provided between the outer wall of the second outer tank body 41211 and the inner wall of the first outer tank body 4221. During the sliding process, the outer wall of the second outer tank body 41211 and the inner wall of the first outer tank body 4221 remain sealed to ensure no leakage. The liquid medicine can enter the first inner tank 4222 through the suction channel 421 and flow out into the first outer tank 4221 and the second outer tank 41211. The first outer tank 4221 and the second outer tank 41211 store the liquid medicine, which will not leak outside the first outer tank 4221 and the second outer tank 41211. The liquid medicine can flow through the liquid guiding channel 423 of the first outer tank 4221. The second inner tank 41212 can be inserted into the first inner tank 4222 or removed from the first inner tank 4222. When the second inner tank 41212 is fitted into the first inner tank 4222, it is sealed, meaning the inner sides of both the second and first inner tanks are sealed, preventing the liquid medicine from entering the inner sides of the first and second outer tanks 4221 and 4222. When the first inner tank 4222 is removed from the inner tank, it is unsealed, meaning the first inner tank 4222 is connected to the first and second outer tanks 4221, allowing the liquid medicine to flow into the first and second outer tanks 4221 and 41211.

[0054] Simply put, both the first and second storage tanks 422 and 4121 are double-cylinder bodies, facing each other. The two outer cylinders are always nested together, ensuring the liquid remains inside the outer cylinders and does not leak out. The two inner cylinders are detachably nested together. When the two inner cylinders are nested, their interiors are sealed, preventing liquid from entering between the outer and inner cylinders. When the two inner cylinders are separated, the liquid can flow from the inner cylinders to the space between them. In other words, the second inner tank 41212 and the first inner tank 4222 are in a movable seal, meaning there are two states: a sealed state and a non-sealed state.

[0055] The working process of the liquid inlet body 42 mainly includes the initial state stage, the beginning stage of the pressing state, the end stage of the pressing state, and the reset state stage.

[0056] Reference Figure 17 and Figure 18In the initial state, the second inner tank 41212 and the first inner tank 4222 are not sealed. The second inner tank 41212 does not enter the first inner tank 4222. The second inner tank 41212 and the first inner tank 4222 are separated and do not contact each other. The first liquid storage tank 422 and the second liquid storage tank 4121 are pre-stored with medicine.

[0057] Reference Figure 19 and Figure 20 as well as Figure 21 In the initial stage of the pressing state, the piston 412 slides laterally towards the liquid inlet body 42, and the second inner groove 41212 enters the first inner groove 4222. A sealing structure is provided between the outer wall of the second inner groove 41212 and the inner wall of the first inner groove 4222. During the sliding process, the outer wall of the second inner groove 41212 and the inner wall of the first inner groove 4222 remain sealed. In this way, the liquid in the first outer groove 4221 and the second outer groove 41211 is blocked by the first inner groove 4222 and the second inner groove 41212, and will not enter the first inner groove 4222 and the second inner groove 41212. This ensures that the liquid will not flow to the suction channel 421 through the first inner groove 4222, and prevents the liquid from returning to the bottle 2 through the suction channel 421 and the guide tube 7 during compression. Instead, it ensures that the liquid enters the nozzle 51 through the guide channel 423. That is, as the piston 412 moves laterally toward the liquid inlet body 42, the end of the piston 412 toward the liquid inlet body 42 will compress the space inside the first outer tank 4221. The liquid medicine inside the first outer tank 4221 will be squeezed by the piston 412 and squeezed into the liquid guiding channel 423 connected to the first outer tank 4221, and then flow to the nozzle 51 and sprayed out from the nozzle 51.

[0058] Reference Figure 22 and Figure 23At the end of the pressing state, the second inner groove 41212 has been inserted into the first inner groove 4222. As the piston 412 continues to slide laterally toward the liquid inlet body 42, the second inner groove 41212 will be completely inserted into the first inner groove 4222. The outer wall of the second inner groove 41212 away from the first inner groove 4222, that is, the outer wall at the root of the second inner groove 41212, is provided with a release part 41214. The release part 41214 can be a raised or recessed rib. When the second inner tank 41212 is about to be completely inserted into the first inner tank 4222, the unsealing part 41214 will contact the inner wall of the first inner tank 4222. The unsealing part 41214 pushes or expands the first inner tank 4222, causing the originally tightly attached second inner tank 41212 and the first inner tank 4222 to separate. An air gap 426 is defined between the outer wall of the second inner tank 41212 and the inner wall of the first inner tank 4222, forming a non-sealed structure. In this way, the compressed gas in the piston 412, the liquid inlet body 42, and the nozzle 51 can be discharged into the first inner tank 4222 through the air gap 426, and then discharged into the bottle body 2 through the liquid suction channel 421 and the liquid guide tube 7 connected to the first inner tank 4222.

[0059] Reference Figure 24 In the reset state, the piston 412 slides laterally away from the liquid inlet body 42, and the second inner tank 41212 exits from the first inner tank 4222. The second inner tank 41212 is no longer sealed to the first inner tank 4222. As the piston 412 resets, a negative pressure is formed in the first liquid storage tank 422 and the second liquid storage tank 4121, generating suction. The liquid in the bottle 2 is sequentially drawn into the first outer tank 4221 and the second outer tank 4121 through the liquid guide tube 7, the liquid suction channel 421 and the first inner tank 4222, thus completing the liquid suction.

[0060] Reference Figure 16The nozzle 51 is connected to the top of the liquid inlet body 42 and is located on the top of the outer shell 1. The nozzle 51 and the outer shell 1 can be separate or integrated. A nozzle 514 is provided at the top of the nozzle 51, from which the liquid is sprayed out. The liquid outlet valve 52 is located inside the nozzle 51. The liquid outlet valve 52 includes a valve body column 521 and a movable spring 522. The movable spring 522 is sleeved on the outer periphery of the bottom of the valve body column 521. One end of the movable spring 522 abuts against the valve body column 521, and the other end abuts against the top of the liquid inlet body 42. The liquid guiding channel 423 on the liquid inlet body 42 communicates with the interior of the nozzle 51. In the initial state, the elasticity of the movable spring 522 causes the valve body column 521 to push upward against the nozzle 514 and seal the nozzle 514, preventing the liquid from leaking out of the nozzle 514. When the press cap 411 is pressed, the liquid medicine enters the nozzle 51 from the liquid inlet body 42 through the liquid guide channel 423. The liquid medicine squeezes the valve body column 521, causing it to move downward and compress the movable spring 522. After the valve body column 521 moves downward, the nozzle 514 opens, and the liquid medicine can be sprayed out from the nozzle 514. After the press cap 411 is released, the valve body column 521 moves upward under the elastic force of the movable spring 522, thereby sealing the nozzle 514.

[0061] In summary, the entire working process and working principle of the side-press nasal spray device in this embodiment are as follows: Initial static state: When the device is not operated, it is in the initial static state. At this time, the piston assembly 41 is not pressed, the elastic element 413 is in a naturally extended state, the second inner tank 41212 and the first inner tank 4222 are in a non-sealed separated state, the first outer tank 4221 and the first inner tank 4222 of the first liquid storage tank 422, together with the second outer tank 41211 and the second inner tank 41212 of the second liquid storage tank 4121, form a liquid storage cavity. A certain amount of medicine is pre-stored in the cavity to prepare for the spraying operation; at the same time, the movable spring 522 of the liquid outlet valve 52 naturally pushes up the valve body column 521, and the upper end of the valve body column 521 tightly seals the nozzle 514 of the spray head 51 to prevent the medicine from leaking. The air pressure inside the bottle 2 is balanced with the external atmospheric pressure, and the air inlet channel is in a flow-through standby state.

[0062] When the user presses the pressing cover 411 of the piston assembly 41 laterally, the pressing cover 411 drives the piston 412 to slide laterally toward the liquid inlet body 42, and the elastic element 413 is compressed to generate a restoring elastic force. During this stage, the two core processes of liquid discharge and air release are completed simultaneously. Reference Figure 21During the liquid dispensing process: the piston 412 slides laterally, causing the second inner tank 41212 to gradually enter the first inner tank 4222. The sealing structure between the outer and inner walls of the two forms a tight seal, preventing the liquid in the storage cavity from flowing back to the first inner tank 4222 and the suction channel 421, thus confining the liquid within the first outer tank 4221 and the second outer tank 41211. As the piston 412 continues to slide, the internal space of the outer tank is compressed, and the liquid flows from the first outer tank 4221 into the liquid guiding channel 423 under the pressure of the squeeze, and then into the nozzle 51. The hydraulic pressure of the liquid overcomes the elastic force of the movable spring 522 of the dispensing valve 52, pushing the valve column 521 downward, opening the nozzle 514, and atomizing the liquid from the nozzle 514.

[0063] Reference Figure 23 During the exhaust process: When the piston 412 slides until the second inner groove 41212 is fully fitted into the first inner groove 4222, the unsealing part 41214 on the outer wall of the root of the second inner groove 41212 contacts the inner wall of the first inner groove 4222 and opens the first inner groove 4222, forming an exhaust gap 426 between them, thus releasing the seal. The compressed gas generated by the liquid pressure inside the piston assembly 41, the liquid inlet body 42, and the nozzle 51 enters the first inner groove 4222 through the exhaust gap 426, and then flows through the liquid suction channel 421 and the liquid guide tube 7 into the bottle 2, completing the rapid release of internal air pressure and avoiding the gas pressure affecting the liquid spraying effect. When the user releases the pressure cap 411, the restoring force of the elastic element 413 pushes the piston element 412 away from the liquid inlet body 42 to slide laterally in the opposite direction. The piston assembly 41 returns to its initial position. During this stage, the two core processes of liquid absorption and air replenishment are completed simultaneously, which completes the replenishment of medicine and air pressure balance for the next spraying operation. Reference Figure 24 Liquid absorption process: The piston 412 slides in the opposite direction, causing the second inner tank 41212 to completely exit from the first inner tank 4222, and the two return to a non-sealed separated state; as the piston 412 resets, the liquid storage cavity formed by the first liquid storage tank 422 and the second liquid storage tank 4121 expands, and a vacuum negative pressure is formed inside. Under the action of negative pressure suction, the liquid in the bottle 2 flows sequentially through the liquid guide tube 7, the liquid absorption channel 421, and the first inner tank 4222 into the space between the first outer tank 4221 and the second outer tank 41211, completing the absorption and temporary storage of new liquid and restoring the liquid volume in the storage cavity.

[0064] Reference Figure 24During the air replenishment process: the liquid medicine in bottle 2 is drawn out during the liquid absorption process, creating a negative pressure inside. Under the action of atmospheric pressure, outside air enters from the air intake channel of the air intake component 3. As it flows through the multi-stage air intake channels, it is filtered and purified by the filter unit 32 in the snap-on cap 31, removing bacteria and impurities from the air. The clean air finally enters the inside of bottle 2, allowing the air pressure inside bottle 2 to be rebalanced with the outside atmospheric pressure, ensuring that the subsequent liquid absorption and spraying processes can proceed smoothly. At the same time, the movable spring 522 of the liquid outlet valve 52 loses the effect of the liquid pressure and naturally resets, lifting the valve body column 521. The upper end of the valve body column 521 then seals the nozzle 514 again, completing the sealing and protection after spraying.

[0065] As stated above, with reference to Figures 1-24 This invention provides a side-press nasal spray device, comprising: a liquid inlet assembly 4, the liquid inlet assembly 4 including a piston assembly 41 and a liquid inlet body 42, the piston assembly 41 being slidably connected to the liquid inlet body 42, the liquid inlet body 42 being provided with a liquid suction channel 421, a first liquid storage tank 422 and a liquid guiding channel 423 connected in sequence, the first liquid storage tank 422 pre-stored with liquid medicine; wherein, the piston assembly 41 slides laterally, the pre-stored liquid medicine in the first liquid storage tank 422 is squeezed into the liquid guiding channel 423; the piston assembly 41 returns to its original position, a vacuum negative pressure is formed in the first liquid storage tank 422, and the liquid suction channel 421 draws in new liquid medicine and temporarily stores it in the first liquid storage tank 422.

[0066] Specifically, the liquid inlet assembly 4 is the core liquid delivery component of the side-press nasal spray device. It is integrally fitted and installed within the outer casing 1 of the nasal spray device, and is connected to the bottle 2, air inlet assembly 3, and liquid outlet assembly 5. The liquid inlet assembly 4 comprises two core components: a piston assembly 41 and a liquid inlet body 42. The piston assembly 41 and the liquid inlet body 42 are slidably connected; there is no fixed connection between them, and they are only engaged through sliding contact. The liquid inlet body 42 is a rigid, one-piece molded structure. Internally, it has three flow structures: a liquid suction channel 421, a first liquid storage tank 422, and a liquid guiding channel 423. These three channels are sequentially connected. Liquid can flow in through the liquid suction channel 421, pass through the first liquid storage tank 422, and then flow out through the liquid guiding channel 423. The first liquid storage tank 422 is a cavity structure within the liquid inlet body 42, which can pre-store a certain amount of liquid to provide a reserve for spraying operations. The piston assembly 41 can slide laterally along its own extension direction, which is perpendicular to the extension direction of the liquid inlet body 42. When the piston assembly 41 slides laterally, it will compress the first liquid storage tank 422 of the liquid inlet body 42. The liquid medicine stored in the first liquid storage tank 422 will flow from the first liquid storage tank 422 into the liquid guiding channel 423 under the action of the compression force, thus completing the delivery of the liquid medicine. When the piston assembly 41 is reset by the elastic force, its relative position with the liquid inlet body 42 returns to the initial state. The space in the first liquid storage tank 422 forms a vacuum negative pressure due to the reset of the piston assembly 41. Under the suction of the negative pressure, the new liquid medicine from the outside will be sucked into the first liquid storage tank 422 from the suction channel 421 and temporarily stored in the first liquid storage tank 422 to replenish the liquid medicine for the next spraying operation.

[0067] Specifically, this structure abandons the traditional vertical pressing structure by designing the liquid inlet component 4 as a sliding fit structure between the piston component 41 and the liquid inlet body 42. It utilizes the lateral sliding of the piston component 41 to achieve the squeezing and inhalation of the liquid, solving the technical problems of traditional nasal spray devices where the vertical pressing operation requires significant force and the force direction being consistent with the spray direction, easily leading to nozzle 51 displacement. Simultaneously, the pre-stored liquid design in the first storage tank 422 achieves quantitative delivery of a single spray, solving the problem of unstable liquid output in traditional devices. This structural design enables side-press operation of the nasal spray device, allowing users to trigger the spray with a single finger, making operation more effortless. The force direction is perpendicular to the spray direction, effectively avoiding relative displacement between the nozzle 51 and the nasal cavity, improving the accuracy of drug delivery. At the same time, the quantitative pre-stored liquid and inhalation structure ensure consistent liquid output with each spray, improving drug delivery stability.

[0068] In one embodiment, the piston assembly 41 includes a piston member 412 that is slidably connected along the first liquid reservoir 422.

[0069] Specifically, the piston assembly 41 is the power actuator of the liquid inlet assembly 4. It has a modular structure and includes a core sliding component, the piston 412. The piston 412 is a rigid rod-shaped structure, and its overall extension direction is consistent with the lateral sliding direction of the piston assembly 41. The piston 412 is slidably connected to the first liquid storage tank 422 of the liquid inlet body 42. One end of the piston 412 can extend into the first liquid storage tank 422 and can reciprocate along the extension direction of the first liquid storage tank 422. The lateral sliding action of the piston assembly 41 is directly driven by the sliding of the piston 412, and the sliding stroke of the piston 412 matches the lateral sliding stroke of the piston assembly 41.

[0070] Specifically, this structure incorporates a piston component 412 within the piston assembly 41, and designs the piston component 412 to slide against the first liquid storage tank 422. This allows the lateral sliding of the piston assembly 41 to directly act on the first liquid storage tank 422, solving the technical problems of traditional piston assemblies 41 lacking dedicated sliding components and exhibiting dispersed force during liquid extrusion, resulting in low liquid dispensing efficiency. This structural design concentrates the lateral sliding force of the piston assembly 41 onto the first liquid storage tank 422, improving the efficiency of liquid extrusion and ensuring that the liquid flows quickly and smoothly from the first liquid storage tank 422 into the liquid guiding channel 423. Simultaneously, the precise sliding fit between the piston component 412 and the first liquid storage tank 422 reduces friction and jamming during the sliding process of the piston assembly 41, enhancing the operational stability and service life of the entire liquid inlet assembly 4.

[0071] In one embodiment, the piston 412 is provided with a second liquid storage tank 4121 at one end near the liquid inlet body 42. The second liquid storage tank 4121 is connected to the first liquid storage tank 422, and the first liquid storage tank 422 and the second liquid storage tank 4121 store the medicine.

[0072] Specifically, the piston 412 is the core sliding component of the piston assembly 41. Its end near the liquid inlet body 42 has an end face structure, which is recessed inward to form a second liquid storage tank 4121. The second liquid storage tank 4121 is a cavity structure on the piston 412, with its opening facing the first liquid storage tank 422 of the liquid inlet body 42. The second liquid storage tank 4121 and the first liquid storage tank 422 are connected, with no obstruction at the connection point, allowing liquid to flow freely between them. The first liquid storage tank 422 is a cavity structure within the liquid inlet body 42, and the second liquid storage tank 4121 is a cavity structure on the piston 412. Together, they form an integrated liquid storage space, allowing the medicine to be stored simultaneously in both the first liquid storage tank 422 and the second liquid storage tank 4121. The combined liquid volume of the two tanks constitutes the pre-stored medicine volume for a single spray.

[0073] Specifically, this structure, by setting a second liquid storage tank 4121 at the end of the piston component 412 near the liquid inlet body 42 and connecting the second liquid storage tank 4121 with the first liquid storage tank 422, expands the liquid storage space from a single first liquid storage tank 422 to a combined structure of the first liquid storage tank 422 and the second liquid storage tank 4121. This solves the technical problems of small liquid storage space and low single spray volume in traditional nasal spray devices, and also solves the problem of residue easily occurring when squeezing liquid from a single liquid storage tank. Through this structural design, the liquid storage space of the liquid inlet component 4 is effectively increased, the liquid output per spray is improved, and the needs of different drug administration scenarios are met. At the same time, the interconnected structure of the first liquid storage tank 422 and the second liquid storage tank 4121 allows the liquid to flow fully during squeezing, reducing the residue of liquid in the storage tank, improving the utilization rate of the liquid, and avoiding waste of liquid.

[0074] Reference Figure 18 and Figure 20 In this embodiment, the first liquid storage tank 422 includes a first outer tank body 4221 and a first inner tank body 4222 disposed within the first outer tank body 4221. The liquid suction channel 421 communicates with the first inner tank body 4222, and the liquid guiding channel 423 communicates with the first outer tank body 4221. The second liquid storage tank 4121 includes a second outer tank body 41211 and a second inner tank body 41212 disposed within the second outer tank body 41211. The outer wall of the second outer tank body 41211 is connected to the first outer tank body 4221. A sliding seal connection is formed between the inner walls of 221; wherein, the piston assembly 41 slides laterally, the second inner groove 41212 enters into the first inner groove 4222, and a sliding seal connection is formed between the outer wall of the second inner groove 41212 and the inner wall of the first inner groove 4222; the piston assembly 41 resets, the second inner groove 41212 exits out of the first inner groove 4222, and the outer wall of the second inner groove 41212 and the inner wall of the first inner groove 4222 are not sealed.

[0075] Specifically, the first liquid storage tank 422 is a double-layer cavity structure within the liquid inlet body 42, including a first outer tank 4221 and a first inner tank 4222. The first outer tank 4221 is the outer cavity of the first liquid storage tank 422, which is directly opened inside the liquid inlet body 42. The first inner tank 4222 is the inner cavity of the first liquid storage tank 422, which is located inside the first outer tank 4221 and is coaxially arranged with the first outer tank 4221. The liquid suction channel 421 is connected to the first inner tank 4222, and the liquid transported by the liquid suction channel 421 can directly flow into the first inner tank 4222. The liquid guiding channel 423 is connected to the first outer tank 4221, and the liquid in the first outer tank 4221 can directly flow into the liquid guiding channel 423. The second liquid storage tank 4121 is a double-layer cavity structure on the piston member 412, comprising a second outer cavity 41211 and a second inner cavity 41212. The second outer cavity 41211 is the outer cavity of the second liquid storage tank 4121, which is directly formed on the end face of the piston member 412. The second inner cavity 41212 is the inner cavity of the second liquid storage tank 4121, which is disposed inside the second outer cavity 41211 and is coaxially arranged with the second outer cavity 41211. The outer wall of the second outer cavity 41211 is in contact with the inner wall of the first outer cavity 4121, and the two are in a sliding seal connection relationship, which can realize relative sliding action and ensure the sealing effect of the connection part to prevent liquid leakage. When the piston assembly 41 slides laterally, the piston 412 drives the second inner groove 41212 to move towards the first inner groove 4222. The second inner groove 41212 gradually enters the interior of the first inner groove 4222, and the outer wall of the second inner groove 41212 fits against the inner wall of the first inner groove 4222, forming a sliding seal connection between the two, thus achieving a sealed fit of the inner cavity. When the piston assembly 41 resets, the piston 412 drives the second inner groove 41212 to move away from the first inner groove 4222, and the second inner groove 41212 gradually exits to the outside of the first inner groove 4222. The outer wall of the second inner groove 41212 separates from the inner wall of the first inner groove 4222, and the two are in a non-sealed state, thus releasing the sealed fit of the inner cavity.

[0076] Specifically, this structure addresses the technical problem of insufficient dispensing volume caused by backflow of medication during the squeezing of traditional nasal spray devices by utilizing the sliding seal and non-sealing cooperation between the inner and outer chambers. It also solves the problem of insufficient medication intake during repositioning. Through this structural design, the sliding seal of the inner chamber effectively prevents medication from flowing back into the suction channel 421 during squeezing, ensuring that all medication flows out through the guide channel 423, thus improving the accuracy of the dispensing volume. During repositioning, the non-sealing state of the inner chamber allows the medication to flow quickly and fully from the suction channel 421 into the storage tank, ensuring sufficient medication intake and providing adequate medication reserve for the next spraying operation.

[0077] Continue to refer to Figure 18 and Figure 20 In a specific implementation, the inner wall of the first outer groove 4221 is provided with a first sealing body 4223, and the first sealing body 4223 abuts against the outer wall of the second outer groove 41211; or, the outer wall of the second outer groove 41211 is provided with a first sealing body 4223, and the first sealing body 4223 abuts against the inner wall of the first outer groove 4221; or, both the inner wall of the first outer groove 4221 and the outer wall of the second outer groove 41211 are provided with a first sealing body 4223, the first sealing body 4223 on the inner wall of the first outer groove 4221 abuts against the outer wall of the second outer groove 41211, and the first sealing body 4223 on the outer wall of the second outer groove 41211 abuts against the inner wall of the first outer groove 4221.

[0078] Specifically, the first sealing body 4223 is an elastic sealing component, which can be made of materials with elastic sealing properties such as rubber, silicone, and elastic plastic. The whole can be designed as a ring, strip, dot, or other raised structure. The first outer tank 4221 is the outer cavity of the first liquid storage tank 422, and its inner wall is a smooth surface structure. The first sealing body 4223 can be directly disposed on the inner wall of the first outer tank 4221, and its position is adapted to the outer wall of the second outer tank 41211. When the second outer tank 41211 and the first outer tank 4221 are in sliding engagement, the first sealing body 4223 on the inner wall of the first outer tank 4221 and the outer wall of the second outer tank 41211 are in tight contact to achieve a seal. Alternatively, the second outer tank 41211 is the outer cavity of the second liquid storage tank 4121, and its outer wall is a smooth surface structure. The first sealing body 4223 can be directly disposed on the outer wall of the second outer tank 41211, and its position is adapted to the inner wall of the first outer tank 4221. When the second outer tank 41211 and the first outer tank 4221 are in sliding engagement, the second outer tank... The first sealing body 4223 on the outer wall of the first outer groove 4221 is in close contact with the inner wall of the first outer groove 4221 to achieve a seal; or, the first sealing body 4223 can be simultaneously disposed on the inner wall of the first outer groove 4221 and the outer wall of the second outer groove 41211. The first sealing body 4223 on the inner wall of the first outer groove 4221 is adapted to the outer wall of the second outer groove 41211, and the first sealing body 4223 on the outer wall of the second outer groove 41211 is adapted to the inner wall of the first outer groove 4221. When the second outer groove 41211 and the first outer groove 4221 slide in contact, the first sealing body 4223 on the inner wall of the first outer groove 4221 is in close contact with the outer wall of the second outer groove 41211, and the first sealing body 4223 on the outer wall of the second outer groove 41211 is in close contact with the inner wall of the first outer groove 4221, achieving a double seal to achieve a sealing fit.

[0079] Specifically, this structure solves the technical problems of traditional sliding seal structures, such as the single sealing method and the susceptibility of sealing effect to processing precision, by setting a first sealing body 4223 at the mating part of the first outer groove 4221 and the second outer groove 41211, and designing multiple ways to set the first sealing body 4223. It also solves the problems of easy wear of sealing components and decreased sealing effect over time during sliding mating. This structural design provides multiple implementation methods for the sliding sealing connection of the first outer groove 4221 and the second outer groove 41211, which can be selected according to the actual processing technology and usage requirements, improving the adaptability of the structure. At the same time, the elastic first sealing body 4223 can effectively compensate for processing errors, ensuring a tight fit at the sealing part, improving the sealing effect, preventing liquid leakage, and the elastic sealing component has good wear resistance, effectively extending the service life of the sealing structure and ensuring the sealing effect after long-term use.

[0080] Continue to refer to Figure 18 and Figure 20 In a specific implementation, the inner wall of the first inner groove 4222 is provided with a second sealing body 41213, and the second sealing body 41213 abuts against the outer wall of the second inner groove 41212; or, the outer wall of the second inner groove 41212 is provided with a second sealing body 41213, and the second sealing body 41213 abuts against the inner wall of the first inner groove 4222; or, both the inner wall of the first inner groove 4222 and the outer wall of the second inner groove 41212 are provided with a second sealing body 41213, the second sealing body 41213 on the inner wall of the first inner groove 4222 abuts against the outer wall of the second inner groove 41212, and the second sealing body 41213 on the outer wall of the second inner groove 41212 abuts against the inner wall of the first inner groove 4222.

[0081] Specifically, the second sealing body 41213 is an elastic sealing component, which can be made of materials with elastic sealing properties such as rubber, silicone, and elastic plastic. The whole can be designed as a ring, strip, dot, or other raised structure. The first inner tank 4222 is the inner cavity of the first liquid storage tank 422, and its inner wall has a smooth surface structure. The second sealing body 41213 can be directly disposed on the inner wall of the first inner tank 4222, and its position is adapted to the outer wall of the second inner tank 41212. When the second inner tank 41212 and the first inner tank 4222 are in sliding engagement, the second sealing body 41213 on the inner wall of the first inner tank 4222 is in tight contact with the outer wall of the second inner tank 41212, achieving a seal; or, the second inner tank 41212 is the inner cavity of the second liquid storage tank 4121, and its outer wall has a smooth surface structure. The second sealing body 41213 can be directly disposed on the outer wall of the second inner tank 41212, and its position is adapted to the inner wall of the first inner tank 4222. When the second inner tank 41212 and the first inner tank 4222 are in sliding engagement, the second sealing body 41213 is in tight contact with the outer wall of the second inner tank 4222, achieving a seal. The second sealing body 41213 on the outer wall of the first inner groove 4222 abuts tightly against the inner wall of the first inner groove 4222 to achieve a seal; or, the second sealing body 41213 can be simultaneously disposed on the inner wall of the first inner groove 4222 and the outer wall of the second inner groove 41212. The second sealing body 41213 on the inner wall of the first inner groove 4222 is adapted to the outer wall of the second inner groove 41212, and the second sealing body 41213 on the outer wall of the second inner groove 41212 is adapted to the inner wall of the first inner groove 4222. When the second inner groove 41212 and the first inner groove 4222 are in sliding fit, the second sealing body 41213 on the inner wall of the first inner groove 4222 abuts tightly against the outer wall of the second inner groove 41212, and the second sealing body 41213 on the outer wall of the second inner groove 41212 abuts tightly against the inner wall of the first inner groove 4222, achieving a double seal to achieve a sealing fit.

[0082] Reference Figure 8 and Figure 12 In one embodiment, the first outer groove 4221 and the first inner groove 4222 are both cylindrical and extend laterally; the second outer groove 41211 and the second inner groove 41212 are both cylindrical and extend laterally.

[0083] Specifically, the first outer tank 4221 is the outer cavity of the first liquid storage tank 422. It has a cylindrical structure and can be in various cylindrical shapes such as cylindrical, square, or polygonal. The first outer tank 4221 extends laterally, and its extension direction is consistent with the lateral sliding direction of the piston assembly 41. The first inner tank 4222 is the inner cavity of the first liquid storage tank 422. It has a cylindrical structure and can be in various cylindrical shapes such as cylindrical, square, or polygonal, which are compatible with the first outer tank 4221. The first inner tank 4222 extends laterally, and its extension direction is consistent with the extension direction of the first outer tank 4221 and the lateral sliding direction of the piston assembly 41.

[0084] The second outer tank 41211 is the outer cavity of the second liquid storage tank 4121. It has a cylindrical structure and can be a cylindrical, square, or polygonal shape, etc., which are compatible with the first outer tank 4221. The second outer tank 41211 extends laterally, and its extension direction is consistent with the lateral sliding direction of the piston assembly 41. The second inner tank 41212 is the inner cavity of the second liquid storage tank 4121. It has a cylindrical structure and can be a cylindrical, square, or polygonal shape, etc., which are compatible with the first inner tank 4222. The second inner tank 41212 extends laterally, and its extension direction is consistent with the extension direction of the second outer tank 41211 and the lateral sliding direction of the piston assembly 41.

[0085] Specifically, this structure solves the technical problems of irregular structures in traditional liquid storage tanks and uneven force during piston assembly 41 sliding, which can easily lead to jamming. It also addresses the issues of poor flow of medicine and residue within the storage tank. The cylindrical tank structure allows the lateral sliding force of the piston assembly 41 to be evenly distributed on the inner wall of the tank, effectively preventing jamming and improving the smoothness of the piston assembly 41's sliding. Furthermore, the lateral extension of the cylindrical structure facilitates smoother flow of medicine within the tank, reducing residue and increasing the utilization rate of the medicine. The cylindrical structure also simplifies the manufacturing process, reducing production costs.

[0086] Reference Figure 15In one embodiment, both the liquid suction channel 421 and the liquid guiding channel 423 extend longitudinally.

[0087] Specifically, the liquid suction channel 421 is a flow channel structure within the liquid inlet body 42, and its overall shape is a straight hole. The liquid suction channel 421 extends longitudinally, and its extension direction is perpendicular to the lateral extension direction of the first liquid storage tank 422. One end of the liquid suction channel 421 is connected to the liquid guide tube 7 of the external bottle 2, and the other end is connected to the first inner tank body 4222 of the first liquid storage tank 422, realizing the suction and delivery of the liquid medicine. The liquid guide channel 423 is a flow channel structure within the liquid inlet body 42, and its overall shape is a straight hole. The liquid guide channel 423 extends longitudinally, and its extension direction is consistent with the longitudinal extension direction of the liquid suction channel 421 and perpendicular to the lateral extension direction of the first liquid storage tank 422. One end of the liquid guide channel 423 is connected to the first outer tank body 4221 of the first liquid storage tank 422, and the other end is connected to the external liquid outlet component 5, realizing the spray delivery of the liquid medicine.

[0088] Specifically, this structure solves the technical problems of messy liquid path extension directions and high resistance during liquid flow in traditional nasal spray devices by designing both the suction channel 421 and the guide channel 423 to extend longitudinally, with their extension directions perpendicular to the lateral extension direction of the first liquid storage tank 422. It also solves the problem of interference between the liquid path and other components, leading to a larger overall device size. Through this structural design, the longitudinal extension of the suction channel 421 and the guide channel 423 is perpendicular to the lateral extension of the first liquid storage tank 422, forming a crisscrossing liquid path layout. This allows for smoother liquid flow, reduces resistance during liquid flow, and improves the efficiency of liquid delivery. Simultaneously, this layout effectively avoids interference between the liquid path and other components within the device, making the internal structure more compact, reducing the overall size of the device, and improving its portability.

[0089] Reference Figure 9 and Figure 11 as well as Figure 22 In one embodiment, the second inner groove 41212 has at least one unsealing portion 41214 on its outer wall away from the first inner groove 4222; when the piston assembly 41 slides laterally and the unsealing portion 41214 contacts the inner wall of the first inner groove 4222, the unsealing portion 41214 opens the first inner groove 4222 so that there is an air outlet gap 426 between the outer wall of the second inner groove 41212 and the inner wall of the first inner groove 4222 to form a non-sealed structure.

[0090] Specifically, the unsealing part 41214 is a structural component protruding from the outer wall of the second inner groove 41212. It can be integrally formed from the same hard material as the second inner groove 41212, or it can be separately formed from a wear-resistant elastic material and then fixed to the outer wall of the second inner groove 41212. The number of unsealing parts 41214 is at least one, and it can be designed as a block, strip, rib, or other protruding structural form. The unsealing part 41214 is located on the outer wall of the second inner groove 41212 away from the first inner groove 4222. This position is the root position of the second inner groove 41212 and is adapted to the end position of the first inner groove 4222. When the piston assembly 41 slides laterally, the piston 412 drives the second inner groove 41212 to move into the first inner groove 4222. When the second inner groove 41212 is about to completely enter the first inner groove 4222, the unsealing part 41214 contacts the inner wall of the first inner groove 4222. The protruding structure of the unsealing part 41214 will form an outward supporting force on the inner wall of the first inner groove 4222, opening the first inner groove 4222 and creating a gap between the outer wall of the second inner groove 41212 and the inner wall of the first inner groove 4222. This gap is the air outlet gap 426, creating a non-sealed state between the two, thus releasing the seal.

[0091] Specifically, this structure provides a sealing part 41214 on the outer wall of the second inner tank 41212. The sealing part 41214 and the inner wall of the first inner tank 4222 form an air outlet gap 426 by contacting and spreading the sealing part 41214 with the inner wall of the first inner tank 4222. This solves the problem that the compressed gas inside the device cannot be discharged when the liquid medicine is squeezed to the end point in the traditional nasal spray device.

[0092] Furthermore, multiple unsealing parts 41214 are provided, and the multiple unsealing parts 41214 are spaced apart along the circumference of the second inner groove 41212 on the outer wall of the second inner groove 41212.

[0093] Specifically, the unsealing part 41214 is a structural component protruding from the outer wall of the second inner groove 41212. There are multiple unsealing parts 41214. The multiple unsealing parts 41214 can adopt the same structural form, or they can adopt different structural forms according to actual needs. For example, they can be symmetrically arranged, or the multiple unsealing parts 41214 can be arranged at intervals along the circumference of the second inner groove 41212 on the outer wall of the second inner groove 41212 away from the first inner groove 4222. The interval can be evenly arranged, or it can be non-uniformly arranged according to the structural characteristics of the first inner groove 4222. The overall layout of the multiple unsealing parts 41214 is adapted to the inner wall of the first inner groove 4222, and can contact the inner wall of the first inner groove 4222 at the same time. When the piston assembly 41 slides laterally and the unsealing part 41214 contacts the inner wall of the first inner groove 4222, the multiple circumferentially spaced unsealing parts 41214 will form an outward supporting force on the inner wall of the first inner groove 4222 from multiple directions, evenly opening the first inner groove 4222, so that a uniform air outlet gap 426 is formed between the outer wall of the second inner groove 41212 and the inner wall of the first inner groove 4222, ensuring the stability of the non-sealed state.

[0094] Specifically, this structure solves the technical problem of uneven force distribution and deformation of the first inner tank 4222 when a single unsealing part 41214 is arranged in multiple circumferentially spaced sections along the second inner tank 41212. It also solves the problem of uneven gas outlet gaps 426 and poor gas discharge caused by a single unsealing part 41214. Through this structural design, the multiple circumferentially spaced unsealing parts 41214 provide uniform support to the inner wall of the first inner tank 4222, preventing deformation due to uneven force distribution and ensuring the structural integrity and service life of the first inner tank 4222. Simultaneously, the uniformly formed gas outlet gaps 426 allow the compressed gas inside the device to discharge quickly and smoothly, improving gas discharge efficiency and further preventing issues such as liquid splashing and piston assembly 41 resetting jams. This enhances the overall stability and user experience of the nasal spray device.

[0095] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A side-press nasal spray device, characterized in that, include: The device comprises an outer shell, a bottle body, an air inlet assembly, a liquid inlet assembly, and a liquid outlet assembly. The bottle body is used to store the medicine. The air inlet assembly, the liquid inlet assembly, and the liquid outlet assembly are all located within the outer shell body. The air inlet assembly is connected to the top of the bottle body, and the liquid outlet assembly, the liquid inlet assembly, and the air inlet assembly are connected sequentially from top to bottom. The air inlet assembly connects the bottle body and the liquid inlet assembly via a liquid guide tube. The liquid inlet assembly includes a piston assembly and a liquid inlet body. The piston assembly is slidably connected to the liquid inlet body and the side wall of the outer shell. The liquid inlet body is provided with a liquid suction channel, a first liquid storage tank and a liquid guiding channel connected in sequence. The liquid suction channel is connected to the air inlet assembly. The extension direction of the first liquid storage tank is perpendicular to the side wall of the outer shell. The liquid guiding channel is connected to the liquid outlet assembly.

2. The side-press nasal spray device according to claim 1, characterized in that, The piston assembly includes a pressing cover, a piston component, and an elastic component. The pressing cover is fixedly connected to the piston component. One end of the elastic component is connected to the piston component, and the other end is connected to the liquid inlet body. Pressing the pressing cover causes the piston component to slide along the first liquid storage tank. A second liquid storage tank is provided at one end of the piston component near the liquid inlet body. The liquid suction channel, the first liquid storage tank, the second liquid storage tank, and the liquid guiding channel are connected in sequence.

3. The side-press nasal spray device according to claim 2, characterized in that, The piston is embedded in the pressing cover, the pressing cover is provided with a hook part, the piston is provided with a locking part, and the hook part is locked into the locking part.

4. The side-press nasal spray device according to claim 1, characterized in that, The liquid dispensing assembly includes a nozzle and a liquid dispensing valve. The nozzle is connected to the top of the outer casing, and a liquid dispensing groove is provided inside the nozzle. The liquid dispensing valve is movably assembled in the liquid dispensing groove.

5. The side-press nasal spray device according to claim 4, characterized in that, The liquid outlet valve includes a valve body column and a movable spring. One end of the movable spring is connected to the liquid inlet assembly, and the other end is connected to the inside of the valve body column, so as to drive the valve body column to move up and down inside the nozzle. The outer wall of the valve body column and the inner wall of the nozzle form a liquid outlet channel, and the liquid outlet channel is connected to the liquid inlet assembly.

6. The side-press nasal spray device according to claim 5, characterized in that, When there is no liquid pressure in the liquid outlet channel, the valve body column is in an upward position, and the upper end of the valve body column blocks the upper end of the liquid outlet channel and the nozzle of the nozzle. When there is liquid pressure in the outlet channel, the valve body column is in a downward state, and the upper end of the outlet channel is connected to the nozzle.

7. The side-press nasal spray device according to claim 6, characterized in that, The liquid inlet body extends upward and is provided with a first connecting wall, and the nozzle is provided with a first connecting groove, and the first connecting wall is engaged in the first connecting groove.

8. The side-press nasal spray device according to claim 1, characterized in that, The air intake assembly includes a snap-on cap and a filter unit. The snap-on cap is connected to the top of the bottle body, and the filter unit is disposed inside the snap-on cap. The snap-on cap includes a connecting part and a functional part. The connecting part extends outward and downward from the bottom of the functional part. The connecting part includes a second connecting wall and a sealing post extending downward from the top of the second connecting wall. The sealing post is disposed inside the second connecting wall. A first buckle is provided on the inner wall of the second connecting wall, and a second buckle is provided on the outer circumferential surface of the bottle body. The first buckle is engaged with the second buckle, and the outer wall of the sealing post abuts against the inner wall of the bottle body. The functional part includes a third connecting wall and a filter unit disposed within the third connecting wall. The filter unit communicates with the sealing post.

9. The side-press nasal spray device according to claim 8, characterized in that, A first air inlet is provided between the piston assembly and the outer shell, and a second air inlet is provided between the liquid inlet body and the third connecting wall; a second connecting groove is formed between the third connecting wall and the filter section, and a fourth connecting wall extends downward from the liquid inlet body, with a third air inlet provided between the fourth connecting wall and the second connecting groove; an air inlet hole is provided on the side wall of the filter section, and the filter unit is located inside the filter section; the first air inlet, the second air inlet, the third air inlet, the air inlet hole, the filter section, the sealing column, and the bottle body are sequentially connected.

10. The side-press nasal spray device according to claim 9, characterized in that, The top of the connecting part extends downward to provide a liquid inlet column, and the two ends of the liquid inlet column are respectively connected to the bottle body and the liquid inlet assembly. The liquid guide tube is embedded in the liquid inlet column so that the bottle body is connected to the liquid inlet assembly through the liquid guide tube.

11. A side-press nasal spray device, characterized in that, include: The liquid inlet assembly includes a piston assembly and a liquid inlet body. The piston assembly is slidably connected to the liquid inlet body. The liquid inlet body is provided with a liquid suction channel, a first liquid storage tank and a liquid guiding channel connected in sequence. The first liquid storage tank is pre-stored with drug solution. The piston assembly slides laterally, and the pre-stored medicine in the first storage tank is squeezed into the liquid guiding channel. When the piston assembly is reset, a vacuum negative pressure is formed in the first liquid storage tank, and the liquid suction channel draws in the new drug solution and temporarily stores it in the first liquid storage tank.

12. The side-press nasal spray device according to claim 1 or 11, characterized in that, The piston assembly includes a piston member that is slidably connected along the first liquid storage tank.

13. The side-press nasal spray device according to claim 12, characterized in that, The piston component is provided with a second liquid storage tank at one end near the liquid inlet body. The second liquid storage tank is connected to the first liquid storage tank, and the first liquid storage tank and the second liquid storage tank store the medicine liquid.

14. The side-press nasal spray device according to claim 13, characterized in that, The first liquid storage tank includes a first outer tank and a first inner tank disposed within the first outer tank. The liquid suction channel is connected to the first inner tank, and the liquid guiding channel is connected to the first outer tank. The second liquid storage tank includes a second outer tank and a second inner tank disposed within the second outer tank. A sliding seal connection is formed between the outer wall of the second outer tank and the inner wall of the first outer tank. The piston assembly slides laterally, and the second inner groove enters the first inner groove, forming a sliding seal connection between the outer wall of the second inner groove and the inner wall of the first inner groove. The piston assembly is reset, the second inner groove body is withdrawn from the first inner groove body, and the outer wall of the second inner groove body and the inner wall of the first inner groove body are not sealed.

15. The side-press nasal spray device according to claim 14, characterized in that, The inner wall of the first outer groove is provided with a first sealing body, which abuts against the outer wall of the second outer groove; or... The outer wall of the second outer groove is provided with a first sealing body, which abuts against the inner wall of the first outer groove; or, Both the inner wall of the first outer groove and the outer wall of the second outer groove are provided with a first sealing body. The first sealing body on the inner wall of the first outer groove abuts against the outer wall of the second outer groove, and the first sealing body on the outer wall of the second outer groove abuts against the inner wall of the first outer groove.

16. The side-press nasal spray device according to claim 14, characterized in that, The inner wall of the first inner groove is provided with a second sealing body, which abuts against the outer wall of the second inner groove; or... The outer wall of the second inner groove is provided with a second sealing body, which abuts against the inner wall of the first inner groove; or... The inner wall of the first inner tank and the outer wall of the second inner tank are both provided with a second sealing body. The second sealing body on the inner wall of the first inner tank abuts against the outer wall of the second inner tank, and the second sealing body on the outer wall of the second inner tank abuts against the inner wall of the first inner tank.

17. The side-press nasal spray device according to claim 14, characterized in that, At least one unsealing part is provided on the outer wall of the second inner tank away from the first inner tank; When the piston assembly slides laterally and the unsealing part contacts the inner wall of the first inner groove, the unsealing part opens the first inner groove so that there is an air vent gap between the outer wall of the second inner groove and the inner wall of the first inner groove to form a non-sealed structure.

18. The side-press nasal spray device according to claim 17, characterized in that, The unsealing section is provided in multiple ways, and the multiple unsealing sections are arranged at intervals along the circumference of the second inner tank on the outer wall of the second inner tank.

19. The side-press nasal spray device according to claim 14, characterized in that, Both the first outer tank and the first inner tank are cylindrical and extend laterally; both the second outer tank and the second inner tank are cylindrical and extend laterally.

20. The side-press nasal spray device according to claim 19, characterized in that, Both the liquid suction channel and the liquid guiding channel extend longitudinally.

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