Nasal spray device

Abstract

The invention relates to a nasal spray device which comprises a shell and a valve assembly, and the shell comprises a nose bell mouth, an air blowing mouth and an air flow channel communicating the air blowing mouth with the nose bell mouth; the valve assembly comprises a valve element and a valve switch, the valve element comprises an elastic film with a gap, and the gap can be closed through the elasticity of the elastic film. The valve switch can open the elastic film so that the valve assembly can conduct the air blowing opening and the nose bell mouth through the gap. Compared with a valve assembly which is closed through cooperation of a valve switch and a valve element, closing of the valve assembly is achieved through elasticity of the valve assembly, the closing effect is more reliable, and the structure is simpler.

Description

Technical Field

[0001] This invention relates to the field of medical drug delivery device technology, and in particular to a nasal spray device. Background Technology

[0002] Nasal administration is a non-invasive method of drug delivery that bypasses the blood-brain barrier, preventing the blockage of active drug molecules and thus reducing bioavailability and efficacy. Due to its convenience, high efficiency, and non-invasiveness, it is increasingly widely used in the pharmaceutical field.

[0003] To improve atomization, some nasal spray devices employ a dual-power drive mode, utilizing airflow assistance to enhance atomization. To coordinate the airflow and medication spray, a valve assembly is required. The valve assembly's opening must be synchronized with the medication bottle's spray to ensure the airflow assistance. Existing valve assemblies require complex designs to close the airflow channel; such complex structures are unreliable and prone to leakage during exhalation. Summary of the Invention

[0004] In view of the above problems, this application provides a nasal spray device.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions: This application provides a nasal spray device, the nasal spray device comprising: The housing includes a nose inlet, an air outlet, and an airflow channel connecting the air outlet and the nose inlet; A valve assembly, the valve assembly including a valve core and a valve switch, the valve core including an elastic diaphragm with slits; The elastic membrane can use its elasticity to close the gap; The valve switch can expand the elastic membrane so that the valve assembly can conduct air through the gap to the air inlet and the nose port.

[0006] Optionally, the nasal spray device further includes: A spray assembly that enables the medicine to be sprayed through the nasal insufflation port; A retainer for mounting a medicine bottle containing a medicine, the movement of the retainer toward the nose port triggering the spray assembly to spray, and the axial movement of the retainer toward the nose port moving the valve switch to a position that opens the elastic membrane.

[0007] Optionally, the valve assembly further includes a force steering structure for converting the axial movement of the retainer into movement applied to the valve switch along a preset direction, the movement of the valve switch along the preset direction being able to open the elastic diaphragm; wherein, the preset direction is not parallel to the axial direction.

[0008] Optionally, the force steering structure includes a first braking ramp disposed on the retainer and a second braking ramp disposed on the valve switch; When the retainer moves toward the nose port, the first braking ramp can move in contact with the second braking ramp, so that the valve switch moves from the initial position to the position where the elastic membrane is opened.

[0009] Optionally, the valve assembly further includes an elastic element capable of providing an elastic force to reset the valve switch to its initial position.

[0010] Optionally, the spray assembly includes a nozzle and a pump assembly, the pump assembly being installed on the medicine bottle; the nozzle has a spray channel leading to the nasal conduit, the pump assembly enabling the medicine to be sprayed out of the nasal conduit through the spray channel, and the airflow blown in from the air outlet being able to flow towards the nasal conduit through the airflow channel to provide assistance for the sprayed droplets; The retainer can move the medicine bottle and the pump assembly toward the nose cup, and the movement of the pump assembly can also move the nozzle toward the nose cup before the medicine bottle sprays.

[0011] Optionally, the nasal spray device further includes a manual trigger, which is movable relative to the housing, and the movement of the manual trigger can cause the retainer to move toward the nasal inlet.

[0012] Optionally, the moving direction of the manual trigger is perpendicular to the axial direction of the nose socket.

[0013] This application embodiment also provides a nasal spray device, the nasal spray device comprising: The housing includes a nose inlet, an air outlet, and an airflow channel connecting the air outlet and the nose inlet; A valve assembly, the valve assembly including a valve core and a valve switch movable relative to the housing, the valve core including an elastic diaphragm with a slit; The movement of the valve switch allows it to cover the gap, and the elastic membrane can use its elasticity to tightly adhere to the valve switch to close the airflow channel; The movement of the valve switch can also separate it from the elastic membrane, and the airflow from the air outlet can deform the elastic membrane to increase the gap and open the airflow channel.

[0014] Optionally, the nasal spray device further includes: A spray assembly that enables the medicine to be sprayed through the nasal insufflation port; A retainer for mounting a medicine bottle containing a medicine, the movement of the retainer toward the nose port triggering the spray assembly to spray, and the axial movement of the retainer toward the nose port moving the valve switch to a position separated from the elastic membrane to open the airflow passage.

[0015] Optionally, the valve assembly further includes a force steering structure, the force steering structure including a valve link, one end of the valve link being rotatably connected to the retainer, and the other end of the valve link being rotatably connected to the valve switch.

[0016] Optionally, the valve rod is bent.

[0017] Optionally, the housing is provided with a guide rail extending along the preset direction, and the valve switch is installed in the guide rail; When the retainer moves relative to the housing, the retainer can drive the valve switch to move within the guide rail via the valve linkage to open or close the airflow channel.

[0018] The embodiments of this application have at least the following technical effects: By utilizing the elastic closed airflow channel of the elastic membrane, higher reliability and lower cost are achieved.

[0019] The valve assembly includes a valve core and a valve switch. The valve switch is used to open the airflow passage but not to close it. The closure of the airflow passage relies on the elasticity of the diaphragm in the valve core. Compared to valve assemblies that rely on the cooperation between the valve switch and the valve core to close the airflow passage, the valve assembly of this application embodiment has a more reliable closing effect and is more conducive to ensuring the cleanliness of the housing. Because the requirements for the fit between the valve core and the valve switch are reduced, the structure is simpler, easier to assemble, and the diaphragm-type valve assembly is less expensive. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional view of the nasal spray device in Embodiment 1 of this application before spraying; Figure 2 for Figure 1 A schematic diagram of the nasal spray device during spraying; Figure 3 for Figure 1 A schematic diagram of the structure of the retainer of the nasal spray device in its initial state, in conjunction with the medicine bottle; Figure 4 Showing Figure 1 Schematic diagram of the central valve assembly; Figure 5 for Figure 4 Schematic diagram of the middle valve core; Figure 6 for Figure 4 Schematic diagram of the structure of the central valve switch; Figure 7 To and Figure 4 A schematic diagram of the structure of the medicine bottle cap matched with the central valve assembly; Figure 8 This is a cross-sectional view of the nasal spray device in Embodiment 2 of this application before spraying; Figure 9 for Figure 8 A schematic diagram of the nasal spray device during spraying; Figure 10 This is a schematic diagram of the valve assembly and nozzle assembly in Embodiment 2 of this application. Figure 11 for Figure 10 Schematic diagram of the middle valve core; Figure 12 for Figure 10 Schematic diagram of the structure of the central valve switch; Figure 13 for Figure 10 Schematic diagram of the middle valve connecting rod; Figure 14 for Figure 10 Schematic diagram of the structure of the central nozzle; Figure 15 This is a schematic diagram of the structure of the medicine bottle cap in Embodiment 2 of this application; Figure 16 This is a schematic diagram of the left shell structure of the nasal spray device in Example 1; Figure 17 This is a schematic diagram of the left shell structure of the nasal spray device in Example 2; Figure 18 This is a schematic diagram of another structure for the retainer of the nasal spray device in its initial state, where the retainer engages with the medicine bottle.

[0022] Explanation of reference numerals in the attached figures: 1. Housing; 101. Housing body; 100. Airflow channel; 2. Mouth holder; 22. Air inlet; 23. Mouth holder channel; 3. Nose holder; 31. Nose holder opening; 4-a / 4-b. Valve assembly; 41-a / 41-b. Valve core; 411-a / 411-b. Gap; 412-a / 412-b. Elastic diaphragm; 413. Inlet end; 414. Outlet end; 42-a / 42-b. Valve switch; 421-a / 421-b. Valve boss; 422. First pivot part; 423. Notch; 424. Second braking ramp; 43. Valve connecting rod; 431. Pivoting boss 5. Nozzle; 51. Nozzle body; 511. Second pivot; 512. Shoulder; 513. Spray channel; 6. Left shell; 64. Track; 641. Limiting buckle; 68. Thumb position; 69. Limiting structure; 7. Right shell; 8. Manual trigger; 81. Finger position; 82. Hook; 83. First trigger ramp; 11. Retaining member; 111. Medicine bottle cap; 1112. First braking ramp; 151. Protrusion; 1151. Second trigger ramp; 112. Medicine bottle; 113. Medicine bottle base; 114. Pump assembly; 1141. Metering valve; 1142. Suction tube. Detailed Implementation

[0023] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0024] In the description of this invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limiting this invention.

[0025] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature defined as "first" or "second" can explicitly include at least one of those features. In the description of this invention, "a plurality of" means at least two, such as two, three, etc.

[0026] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] The following is combined with Figures 1 to 18 The embodiments of this application will be described.

[0028] Example 1 Figures 1 to 7 The structure of the nasal spray device in Embodiment 1 is illustrated by way of example.

[0029] See Figure 1 and Figure 2 The nasal spray device of this application embodiment includes a housing 1 and a valve assembly 4-b. The housing 1 includes a nasal inlet 31, an air outlet 22, and an airflow channel 100 connecting the air outlet 22 and the nasal inlet 31. The blown air enters through the air outlet 22 and is guided through the airflow channel 100 to the nasal inlet 31, and then sprayed into the nasal cavity from the nasal inlet 31. The airflow blown in from the air outlet 22 can flow through the airflow channel 100 toward the nasal inlet 31 to assist the sprayed droplets, helping to carry the liquid medicine into the olfactory and respiratory areas of the nasal cavity as much as possible. Moreover, the gas blown out of the mouth can provide shear force to assist in the atomization of the liquid medicine, thereby making the liquid medicine atomized more thoroughly, obtaining smaller particle sizes, and achieving better effects.

[0030] exist Figure 1 In the illustrated implementation, the housing 1 includes a housing body 101 and a mouth support 2 connected to the housing body 101. A nose support 3 is formed on the top of the housing body 101, and the nose support 3 has a nose support opening 31. The mouth support 2 extends laterally from the side wall of the housing body 101 and has a mouth support channel 23. One end of the mouth support channel 23 has an air inlet 22, and the other end is connected to the nose support opening 31 through an airflow channel 100. The air inlet 22 is on the side, and the nose support opening 31 is on top, which makes it easier to align with the patient's mouth and nose during use.

[0031] See Figure 4Valve assembly 4-b includes valve core 41-b and valve switch 42-b. Valve core 41-b includes an elastic membrane 412-b with a slit 411-b. The elasticity of the elastic membrane 412-b can close the slit 411-b, cutting off the airflow. Valve switch 42-b can expand the elastic membrane 412-b, allowing valve assembly 4-b to conduct airflow port 22 and nose port 31 through the slit 411-b. That is, valve switch 42-b is used to open airflow channel 100, but not to close airflow channel 100. Closure of airflow channel 100 is achieved by the elasticity of the elastic membrane 412-b in valve core 41-b.

[0032] Compared with the valve assembly 4-b which relies on the cooperation of valve switch 42-b and valve core 41-b to achieve closure, the valve assembly 4-b in Embodiment 1 relies on its own elasticity to achieve closure, which is more reliable and more conducive to ensuring the cleanliness of the inside of the housing 1. It also reduces the requirements for the fit between valve core 41-b and valve switch 42-b, has a simpler structure, is easier to assemble, and has a lower cost.

[0033] See Figure 4 and Figure 5 The elastic membrane 412-b includes at least two valves, preferably made of silicone. When no external force is applied, the valves will automatically close under their own elasticity, forming a tight seal. At this time, airflow can only flow in from the inlet end 413, and cannot flow in from the outlet end 414 (near the air outlet 22) to the inlet end 413, thus forming a one-way valve.

[0034] See Figure 1 and Figure 2 In some alternative embodiments, the nasal spray device further includes a spray assembly and a retainer 11. The spray assembly enables the medicine to be sprayed through the nasal inlet 31. The retainer 11 is used to mount a medicine bottle 112 containing the medicine. Movement of the retainer 11 toward the nasal inlet 31 can trigger the spray assembly to spray, and axial movement of the retainer 11 toward the nasal inlet 31 can move the valve switch 42-b to a position where the elastic membrane 412-b is opened.

[0035] After the elastic membrane 412-b is stretched, the gap 411-b becomes larger, and a gas flow channel can be set on the valve switch 42-b. The gap 411-b is connected to the air flow channel 100 through the gas flow channel.

[0036] In the embodiments illustrated in this application, "movement of the retainer 11 toward the nose socket 31" refers to the retainer 11 moving upwards generally along its axial direction. "Movement of the retainer 11 away from the nose socket 31 and reset (mentioned below)" refers to the retainer 11 moving downwards generally along its axial direction. The retainer 11, housing 1, medicine bottle 112, and the nozzle 5 and pump assembly 114 of the spray assembly are all arranged substantially coaxially.

[0037] During the upward movement of the retainer 11, not only can spraying be achieved, but the airflow channel 100 can also be opened by the linkage valve assembly 4-b. This linkage method can not only simplify the operation of the nasal spray device and improve the user experience, but also effectively ensure the coordination of multiple actions such as liquid spraying and airflow spraying, and ensure that there is airflow assistance during liquid spraying.

[0038] In some alternative embodiments, the valve assembly 4-b further includes a force steering structure for converting the axial movement of the retainer 11 into movement applied to the valve switch 42-b in a preset direction, the movement of the valve switch 42-b in the preset direction being able to open the elastic diaphragm 412-b; wherein the preset direction is not parallel to the axial direction.

[0039] In this embodiment, the valve assembly 4-b is generally positioned at the connection between the mouthpiece 2 and the housing body, and is located to the side of the nasal spray device's axis. Generally, the inner diameter of the mouthpiece channel 23 is small, making it easier for the valve assembly 4-b to close or open the airflow channel 100 by either blocking or opening the outlet of the mouthpiece channel 23. This results in better reliability of the airflow channel 100's opening and closing control. Furthermore, the placement of the valve assembly 4-b here does not significantly interfere with the spraying process (as the spraying devices involved in the spraying process primarily move along the axial direction), resulting in a more scientific spatial layout and effectively improving the overall device's reliability. The fact that the movement of the valve switch 42-b is not parallel to the movement of the spray assembly better accommodates this layout.

[0040] By utilizing the force steering structure to convert the axial movement of the retainer 11 into the preset direction movement of the valve switch 42-b, the linkage between the retainer 11 and the valve assembly 4-b is realized. This facilitates the coordination of the two steps of spraying and opening the airflow channel 100, ensuring that the airflow channel 100 can be opened during spraying, and also helps to improve the utilization rate of the internal space of the housing 1.

[0041] In the embodiments illustrated in this application, the preset direction is approximately perpendicular to the axial direction, that is, the preset direction is approximately parallel to the horizontal direction.

[0042] See Figure 1 and Figure 2 In some alternative embodiments, the spray assembly includes a nozzle 5 and a pump assembly 114, the pump assembly 114 being mounted on the medicine bottle 112; the nozzle 5 has a spray channel 513 leading to the nose socket 31, the pump assembly 114 enabling the medicine to be sprayed out of the nose socket 31 through the spray channel 513, and the airflow blown in from the air outlet 22 can flow towards the nose socket 31 through the airflow channel 100 to provide assistance for the sprayed droplets; the retainer 11 can drive the medicine bottle 112 and the pump assembly 114 to move towards the nose socket 31, and the movement of the pump assembly 114 can drive the nozzle 5 to also move towards the nose socket 31 before spraying from the medicine bottle 112; the valve link 43 is connected to the retainer 11 and / or the nozzle 5.

[0043] During the upward movement of the retainer 11, the nozzle 5 also shifts towards the nasal inlet 31 by approximately 0.5 to 3 mm. This allows the atomization point of the medication to penetrate deeper into the nasal cavity, delivering the medication more thoroughly. Simultaneously, it prevents the atomized medication from adhering to the inner wall of the nasal inlet 3, thus avoiding contamination and waste. After spraying is complete, the retainer 11 returns to its original position under gravity, and the nozzle 5 also moves downward to its original position.

[0044] The housing 1 also includes a limiting structure 69. When the nozzle 5 moves toward the nose socket 31 to the limiting structure 69, the limiting structure 69 prevents the nozzle 5 from moving further. The retaining member 11 can continue to drive the pump assembly 114 to move relative to the nozzle 5 toward the nose socket 31, thereby opening the pump assembly 114 and triggering the pump assembly 114 to spray the medicine. Before the nozzle 5 is limited by the limiting structure 69, the nozzle 5 can move synchronously with the movement of the retaining member 11 and the pump assembly 114. The valve assembly 4-b can open the airflow passage 100 to its maximum extent when the nozzle 5 is limited by the limiting structure 69.

[0045] In other implementations, see Figure 6 and Figure 7 The force steering structure includes a first braking ramp 1112 disposed on the retainer 11 and a second braking ramp 424 disposed on the valve switch 42-b; when the retainer 11 moves toward the nose port 31, the first braking ramp 1112 can move in contact with the second braking ramp 424 to move the valve switch 42-b from the initial position to the position where the elastic membrane 412-b is opened.

[0046] Figure 6 Gap 423 in the middle is used for avoidance. Figure 5 Rib position of nozzle 5.

[0047] By utilizing the first braking inclined surface 1112 and the second braking inclined surface 424 to abut and move relative to each other, the axial movement of the retaining member 11 or the nozzle 5 is transformed into the horizontal movement of the valve switch 42-b, resulting in a simple and compact structure.

[0048] See Figure 4 In some alternative embodiments, valve assembly 4-b further includes an elastic element that provides elastic force to reset valve switch 42-b to its initial position.

[0049] The elastic element can be Figure 4 The spring shown can also be a spring sheet, an elastic rubber component, etc.

[0050] When the nasal spray device is in its initial state, the first braking ramp 1112 is in contact with the second braking ramp 424. When the button is pressed, the retainer 11 moves upward, causing the first braking ramp 1112 to move upward relative to the second braking ramp 424, and driving the valve switch 42-b to move toward the valve core 41-b. The valve switch 42-b can at least partially extend between the valves of the valve core 41-b, opening the elastic membrane 412-b, increasing the gap 411-b, and allowing airflow to flow into the airflow channel 100. After the button is released, under the weight of the medicine bottle 112 and the retainer 11, the retainer 11 can move downward to reset. During the reset process of the retainer 11, the elastic element uses its elastic force to reset the valve switch 42-b. The elastic element can also maintain the initial position of the valve switch 42-b when the retainer 11 is stationary relative to the housing 1, preventing the airflow channel 100 from being opened.

[0051] See Figure 3 The retainer 11 includes two parts: a bottle cap 111 and a bottle base 113. The bottle 112 and the retainer 11 together form a bottle assembly.

[0052] When using the device, the patient first holds the mouthpiece 2 in their mouth and blows air forcefully. At this time, the outer side of the valve core 41-b is subjected to air pressure, making the closure tighter and preventing air leakage. Due to the high pressure in the oral cavity, the soft palate inside the patient's mouth will close. After inserting the nose support 3 into the nasal cavity, the button is pressed. At this time, the button will cause the medicine bottle cap 111 to move upward. The first braking slope 1112 on the medicine bottle cap 111 fits against the second braking slope 424 on the valve switch 42-b. Through the cooperation of the two slopes, the vertical upward movement of the medicine bottle cap 111 is converted into the horizontal movement of the valve switch 42-b. The valve boss 421-b of the valve switch 42-b is inserted into the inlet end 413 of the valve core 41-b, separating the two valves. At this time, the valve core 41-b is opened, and the air blown out of the mouthpiece 2 can flow from the outlet end 414 to the inlet end 413, and enter the nasal cavity through the nose support 3. This airflow helps to atomize the medication and carries the droplets deeper into the nasal cavity. Because the soft palate is closed, the medication will eventually be deposited in the nasal vestibule and will not enter the airway or esophagus, thus enhancing the therapeutic effect.

[0053] See Figure 3 In some alternative embodiments, the nasal spray device further includes a manual trigger 8, which is movable relative to the housing 1, and the movement of the manual trigger 8 can cause the retainer 11 to move toward the nose port 31.

[0054] The manual trigger 8, taking a button as an example, can move the retainer 11 toward the nose receiver 31 by pressing the button. The operation process of the nasal spray device in this embodiment generally includes the following steps: 1. Insert the nose support 3 into the nostril, hold the mouth support 2 in your mouth, and blow air into the air outlet 22. At this time, the airflow channel 100 of the device is in a closed state, which will cause high pressure in the oral cavity and close the soft palate.

[0055] 2. Press the button to activate the nozzle and simultaneously open the airflow channel 100 via the valve assembly 4-b. Airflow from the mouthpiece channel 23 enters the airflow channel 100 and passes through the nosepiece 31 into the nasal cavity, carrying the medication sprayed through the spray channel 513 into the nasal vestibule. At the moment of spraying, the oral cavity is filled with high-pressure gas, causing the soft palate to close, preventing the medication from entering the airway or esophagus.

[0056] In some alternative embodiments, the direction of movement of the manual trigger 8 is perpendicular to the axis of the nose socket 31.

[0057] In conjunction with the foregoing description, the structure of the first triggering inclined surface 83 and the second triggering inclined surface 1151 being attached and sliding relative to each other can convert the axial movement of the retaining member 11 into the lateral horizontal movement of the button. This linkage method of directly hard contacting to change the force direction is simple in structure, has fewer parts, and is conducive to reducing costs.

[0058] Moreover, compared with rotation and other movement methods, the horizontal movement of the button towards the bearing 2 in this embodiment of the application is more in line with the patient's usage habits and can improve the user experience.

[0059] In the initial state, due to the influence of the weight of the medicine bottle assembly itself, the first triggering inclined surface 83 and the second triggering inclined surface 1151 can fit together tightly.

[0060] In some embodiments, see Figure 2 The housing 1 includes a left housing 6 and a right housing 7, which are assembled to form a space for accommodating components such as the valve assembly 4-b, the pump assembly 114, the nozzle 5, and the medicine bottle. The nose support is located in the left housing 6, and the button is located in the right housing 7. The design of the left and right housings 6 and 7 facilitates the assembly of each component.

[0061] The medicine bottle cap 111 and the medicine bottle base 113 are each provided with at least one protrusion 151, and each protrusion 151 is provided with a second triggering slope 1151. See also Figure 3 The manual trigger 8 is also equipped with a hook 82 and multiple first trigger ramps 83. The hook 82 is engaged with the inner wall of the right shell 7 to prevent the manual trigger 8 from dislodging from the right shell 7. In use, the thumb presses the thumb position 68 of the left shell 6, and the other four or three fingers press the multiple finger positions 81 on the manual trigger 8, causing the manual trigger 8 to move horizontally inward. The medicine bottle and retainer 11 are constrained by the left shell 6 and the right shell 7 and cannot move horizontally, but can only move vertically. Under the action of the first trigger ramp 83 and the corresponding second trigger ramp 1151, the horizontal movement of the button is converted into the up and down movement of the medicine bottle assembly composed of the medicine bottle and retainer 11.

[0062] See Figure 18In another implementation, the manual trigger 8 has a first trigger ramp 83, and the retainer 11 has a curved surface 1611, with the first trigger ramp 83 in line contact with the curved surface 1611. Here, the curved surface 1611 can be the elliptical circumferential surface of a generally elliptical cylindrical boss 161 protruding from the sidewall of the retainer 11. Relative to... Figure 3 In terms of the surface contact method where the first triggering inclined surface 83 and the second triggering inclined surface 1151 are in contact, Figure 18 This line contact method requires less effort and makes it easier to push the retaining component 11 upward.

[0063] In some embodiments not illustrated in this application, the curved surface may also be disposed on the manual trigger 8, and the first trigger ramp that fits against the curved surface may be disposed on the retainer 11.

[0064] The nozzle 5 moves upward synchronously with the medicine bottle assembly. After about 0.5 to 3 mm, the protruding shoulder 512 on the nozzle 5 comes into contact with the nozzle limiting platform inside the housing 1 (i.e., one implementation of the aforementioned limiting structure 69). The nozzle 5 can no longer move upward, while the medicine bottle assembly continues to move upward, squeezing the pump assembly 114 and causing the buffered medicine to be squeezed. Since there is a one-way valve at the bottom of the pump assembly 114, the medicine can only flow upward, through the nozzle assembly, and be sprayed out from the swirling chamber (i.e., the spray channel 513) on the nozzle 5 to form atomized droplets.

[0065] Regarding pump assembly 114: Pump assembly 114 may be any existing pump assembly 114, and its specific structure is not intended to limit this application. For ease of understanding, pump assembly 114 is briefly described below. Pump assembly 114 includes a suction tube 1142, a metering valve 1141, and a check valve. Under the action of the check valve, the suction tube 1142 can only draw the liquid from the medicine bottle into the metering valve 1141, and will not flow back from the metering valve 1141 into the medicine bottle. When pump assembly 114 moves upward relative to nozzle 5, the spring of metering valve 1141 is compressed, and the liquid in metering valve 1141 is compressed into the swirling chamber of nozzle 5. The inner wall of the swirling chamber is a swirling groove. According to the principle of swirling atomization, the liquid moves radially outward under the action of centrifugal force, and extends into a liquid film on the rotating surface of the swirling groove. Centrifugal force overcomes the surface tension and viscosity of the liquid, causing the liquid film to continuously thin, and detach from the surface at the rotating edge to form a filamentous or ribbon-like structure. High-speed airflow or ambient gas interacts with the liquid filaments and liquid bands, further breaking them down into micron-sized droplets through gas-liquid shear forces. Releasing the button resets the metering valve 1141, and simultaneously, the suction tube 1142 draws the required liquid from the vial for the next spray. This cycle repeats continuously.

[0066] Example 2 Figures 8 to 15 The nasal spray device of Embodiment 2 is shown as an example.

[0067] The following description focuses only on the differences between Example 1 and Example 2. The remaining structure of the nasal spray device in Example 2 is the same as that in Example 1 without contradiction, and will not be described again.

[0068] In Example 2, see Figure 8 The movement of valve switch 42-a enables it to cover gap 411-a ( Figure 11 The elastic membrane 412-a can use its elasticity to tightly adhere to the valve switch 42-a to close the airflow channel 100; the movement of the valve switch 42-a can also separate it from the elastic membrane 412-a, and the airflow from the air outlet 22 can deform the elastic membrane 412-a to increase the gap 411-a and open the airflow channel 100.

[0069] Therefore, it can be seen that the nasal spray device in Embodiment 2 also utilizes the elasticity of the elastic membrane 412-a to close the airflow channel 100. The elasticity of the elastic membrane 412-a can improve the tightness of the fit between the elastic membrane 412-a and the valve switch 42-a, thereby increasing the closing effect of the valve assembly 4-a on the airflow channel 100. Using the elasticity of the elastic membrane 412-a to close the airflow channel 100 results in higher reliability and lower cost.

[0070] See Figure 11 The elastic membrane 412-a includes four valves, and two intersecting slits 411-a are formed between the four valves. The valves are preferably made of silicone. When no external force is applied, the four valves adhere to each other, and the slits 411-a disappear.

[0071] See Figures 8 to 10 ,as well as Figure 13 The force steering structure includes a valve rod 43, one end of which is rotatably connected to a retainer 11, and the other end of which is rotatably connected to a valve switch 42-a.

[0072] Here, the valve rod 43 can be directly or indirectly connected to the retainer 11.

[0073] The valve connecting rod 43 is bent at a certain angle. For example, the bent shape can be as follows: Figure 13 As shown, it is roughly inverted V-shaped. This structure not only improves the utilization of the internal space of the housing 1, but also allows for smoother movement of the valve switch 42-a.

[0074] By adjusting the bending angle of valve connecting rod 43 and the ratio of the lengths of the two ends of the bend (e.g.) Figure 13 The ratio of a to b (at least one of these two parameters) can adjust the displacement transmission ratio between valve switch 42-a and nozzle 5. For example, if the nozzle moves up 1mm and the valve switch moves to the left 1mm, the displacement transmission ratio is 1:1. Alternatively, if the nozzle moves up 1mm and the valve switch moves to the left 2mm, the displacement transmission ratio is 1:2.

[0075] See Figure 10 The valve rod 43 is indirectly connected to the retainer 11 via the nozzle 5. Alternatively, the valve rod 43 can also be directly connected to the retainer 11.

[0076] In Embodiment 2, the valve rod 43 and the nozzle 5 do not require an intermediate component, which reduces the number of parts in the device and makes the linkage simple and convenient. Moreover, by using the upward or downward movement of the retaining member 11 to drive the valve switch 42-a to switch back and forth between the open valve core 41-a and the closed valve core 41-a positions, there is no need for other components such as elastic members, resulting in a simple and compact structure.

[0077] See Figure 8 and Figure 9 In some optional embodiments, the housing 1 is provided with a guide rail 64 extending in a preset direction, and the valve switch 42-a is installed in the guide rail 64. When the retainer 11 moves relative to the housing 1, the retainer 11 can drive the valve switch 42-a to move in the guide rail 64 via the valve connecting rod 43 to open or close the airflow channel 100. Specifically, when the retainer 11 moves toward the nose socket 31, the retainer 11 can drive the valve switch 42-a to move in the guide rail 64 to a position separated from the elastic membrane 412-a via the valve connecting rod 43 to open the airflow channel 100. When the retainer 11 moves away from the nose socket 31 to reset, the retainer 11 drives the valve switch 42-a to move along the rail 64 to reset via the valve connecting rod 43. The reset process does not require the assistance of an elastic member.

[0078] The track 64 can limit the axial displacement of the valve switch 42-a, ensuring that the valve switch 42-a can switch back and forth between the two positions of opening the valve core 41-a and closing the valve core 41-a.

[0079] See Figure 12 The valve switch 42-a is provided with a valve boss 421-a corresponding to the gap 411-a, and a first pivot portion 422. (See also...) Figure 13 The valve connecting rod 43 has two pivot bosses 431; see also Figure 14 The nozzle 5 includes a nozzle body 51, which has a second pivot portion 511 and a protruding shoulder portion 512. The pivot bosses 431 at both ends of the valve connecting rod 43 respectively engage with the first pivot portion 422 of the valve switch 42-a and the second pivot portion 511 of the nozzle 5. Both the first pivot portion 422 and the second pivot portion 511 are groove structures. The valve core 41-a is mounted in the guide rail of the left outer casing, restricting its axial displacement relative to the nozzle body. When the nozzle body moves upward, the valve plug moves along the axis of the valve core 41-a through the linkage of the valve connecting rod 43.

[0080] When the nasal spray device is in its initial state, the valve switch 42-a is tightly fitted with the valve core 41-a, the valve boss 421-a is tightly fitted with the gap 411-a, and the sealing boss abuts against the valve. The valve assembly 4-a is in a closed state and cannot allow airflow.

[0081] When using the product, first hold the mouthpiece 2 in your mouth and blow air into your mouth. At this time, the valve assembly 4-a is not open, and the gas is stored in the mouthpiece channel 23. After pressing the button, the button moves the medicine bottle upward, and the nozzle 5 drives the valve switch 42-a through the valve connecting rod 43, disengaging it from the valve core 41-a. High-pressure airflow is present in the mouthpiece, and the valve loses the support of the sealing boss and begins to deform towards the low-pressure side, which increases the gap 411-a. The airflow can then pass through the valve core 41-a, enter the airflow channel 100, and then pass through the nosepiece and enter the nasal cavity.

[0082] See Figure 15 Unlike Example 1, the medicine bottle cap 111-a in Example 2 does not have a first braking slope 1112.

[0083] Figure 16 This is a schematic diagram of the structure of the left shell 6 of the nasal spray device in Example 1. Figure 17 This is a schematic diagram of the structure of the left shell 6 of the nasal spray device in Embodiment 2. The left shell 6 of Embodiment 1 is also provided with a track 64. Unlike Embodiment 2, the track 64 in Embodiment 1 is provided with limiting buckles 641 at both ends. The limiting buckles 641 are used to prevent the valve switch 42-b from falling out of the track 64. The limiting buckles 641 have a chamfer on the outside to facilitate the insertion of the valve switch 42-b.

[0084] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0085] In the description of this specification, references to "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A nasal spray device, characterized in that, The nasal spray device includes: The housing includes a nose inlet, an air outlet, and an airflow channel connecting the air outlet and the nose inlet; A valve assembly, the valve assembly including a valve core and a valve switch, the valve core including an elastic diaphragm with slits; The elastic membrane can use its elasticity to close the gap, thereby closing the airflow channel; The valve switch can expand the elastic membrane so that the valve assembly can conduct air through the gap to the air inlet and the nose port.

2. The nasal spray device according to claim 1, characterized in that, The nasal spray device also includes: A spray assembly that enables the medicine to be sprayed through the nasal insufflation port; A retainer for mounting a medicine bottle containing a medicine, the movement of the retainer toward the nose port triggering the spray assembly to spray, and the axial movement of the retainer toward the nose port moving the valve switch to a position that opens the elastic membrane.

3. The nasal spray device according to claim 2, characterized in that, The valve assembly further includes a force steering structure for converting the axial movement of the retainer into a movement applied to the valve switch along a preset direction, the movement of the valve switch along the preset direction being able to open the elastic membrane; wherein, the preset direction is not parallel to the axial direction.

4. The nasal spray device according to claim 3, characterized in that, The force steering structure includes a first braking ramp disposed on the retaining member and a second braking ramp disposed on the valve switch; When the retainer moves toward the nose port, the first braking ramp can move in contact with the second braking ramp, so that the valve switch moves from the initial position to the position where the elastic membrane is opened.

5. The nasal spray device according to claim 4, characterized in that, The valve assembly also includes an elastic element that provides elastic force to reset the valve switch to its initial position.

6. The nasal spray device according to claim 2, characterized in that, The spray assembly includes a nozzle and a pump assembly, the pump assembly being installed on the medicine bottle; the nozzle has a spray channel leading to the nasal inlet, the pump assembly enabling the medicine to be sprayed out of the nasal inlet through the spray channel, and the airflow blown in from the air outlet can flow towards the nasal inlet through the airflow channel to provide assistance for the sprayed droplets. The retainer can move the medicine bottle and the pump assembly toward the nose cup, and the movement of the pump assembly can also move the nozzle toward the nose cup before the medicine bottle sprays.

7. The nasal spray device according to claim 2, characterized in that, The nasal spray device also includes a manual trigger, which is movable relative to the housing. The movement of the manual trigger can cause the retainer to move toward the nasal inlet.

8. The nasal spray device according to claim 7, characterized in that, The direction of movement of the manual trigger is perpendicular to the axis of the nose socket.

9. A nasal spray device, characterized in that, The nasal spray device includes: The housing includes a nose inlet, an air outlet, and an airflow channel connecting the air outlet and the nose inlet; A valve assembly, the valve assembly including a valve core and a valve switch movable relative to the housing, the valve core including an elastic diaphragm with a slit; The movement of the valve switch allows it to cover the gap, and the elastic membrane can use its elasticity to tightly adhere to the valve switch to close the airflow channel; The movement of the valve switch can also separate it from the elastic membrane, and the airflow from the air outlet can deform the elastic membrane to increase the gap and open the airflow channel.

10. The nasal spray device according to claim 9, characterized in that, The nasal spray device also includes: A spray assembly that enables the medicine to be sprayed through the nasal insufflation port; A retainer for mounting a medicine bottle containing a medicine, the movement of the retainer toward the nose port triggering the spray assembly to spray, and the axial movement of the retainer toward the nose port moving the valve switch to a position separated from the elastic membrane to open the airflow passage.

11. The nasal spray device according to claim 10, characterized in that, The valve assembly further includes a force steering structure, which includes a valve link, one end of which is rotatably connected to the retainer, and the other end of which is rotatably connected to the valve switch.

12. The nasal spray device according to claim 11, characterized in that, The valve connecting rod is bent.

13. The nasal spray device according to claim 11, characterized in that, The housing is provided with a guide rail extending in a preset direction, and the valve switch is installed in the guide rail; When the retainer moves relative to the housing, the retainer can drive the valve switch to move within the guide rail via the valve linkage to open or close the airflow channel.

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