Spraying device for nasal cavity

Abstract

The utility model relates to a spraying device for a nasal cavity, which comprises a spraying main body, a spraying head and a spraying head, the nose pad comprises a nose pad opening and an air inlet, a flow channel is formed between the nose pad and the spray body, and fog drops sprayed out of the nozzle sequentially pass through the flow channel and the nose pad opening to enter the nasal cavity; and the one-way valve is constructed to allow external gas to enter the flow channel through the gas inlet and not allow the gas in the flow channel to be discharged through the gas inlet. According to the spraying device, the nose pad is provided with the air inlet, and the one-way valve is arranged, so that only air can enter the air inlet of the nose pad, air can not exit from the air inlet, resistance encountered by fogdrops sprayed out of the nozzle due to expiration of a user is avoided, expired air flow is prevented from carrying part of the fogdrops to be discharged from the air inlet, and the spraying effect is ensured.

Description

Technical Field

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

[0002] Nasal administration differs from oral and enteral administration. Nasal administration avoids the gastrointestinal tract, thus avoiding the first-pass effect of oral drugs, and can directly enter the bloodstream, thereby improving drug absorption and bioavailability.

[0003] The nasal spray device includes a nasal pad and a nasal spray body. The nasal pad is inserted into the nostril, and the mist sprayed from the nasal spray body delivers the medication directly to the nasal cavity through the nasal pad. This allows the medication to directly contact the nasal mucosa, providing a more effective therapeutic effect. However, if the user exhales through the nose during medication administration, the exhaled air can obstruct the delivery of the medication, affecting its delivery efficiency. Utility Model Content

[0004] Based on the aforementioned deficiencies in the prior art, the purpose of this utility model is to provide a nasal spray device, wherein the nose pad is provided with an air inlet and a one-way valve is provided, so that air can only enter and not exit at the air inlet of the nose pad, thereby avoiding the resistance encountered by the mist droplets sprayed from the nozzle due to the user's exhalation, and preventing the exhaled airflow from carrying some mist droplets out of the air inlet, thus ensuring the spraying effect.

[0005] Therefore, the present invention provides the following technical solution.

[0006] This utility model provides a nasal spray device, the spray device comprising:

[0007] A spray body, including a nozzle;

[0008] The nose pad includes a nose pad opening and an air inlet. A flow channel is formed between the nose pad and the spray body. The droplets sprayed from the nozzle enter the nasal cavity sequentially through the flow channel and the nose pad opening.

[0009] A one-way valve is configured to allow outside gas to enter the flow channel through the inlet, but not allow gas in the flow channel to exit through the inlet.

[0010] Optionally, the one-way valve includes a resilient structure;

[0011] When air is exhaled through the nasal cavity from the nose pad opening, the elastic structure abuts against the inner wall of the nose pad and covers the air inlet to seal the air inlet;

[0012] When air is inhaled through the nasal cavity from the nose pad opening, the elastic structure undergoes at least partial elastic deformation under air pressure to open the air inlet.

[0013] Optionally, the one-way valve further includes a raised structure connected to the side of the elastic structure facing the air inlet;

[0014] When air is exhaled from the nasal cavity through the nose pad opening, the elastic structure at least partially deforms elastically, causing the protruding structure to squeeze the air inlet to seal the air inlet;

[0015] When air is inhaled through the nasal cavity from the nose pad opening, the elastic structure at least partially deforms elastically, causing the protruding structure to move away from the air inlet, thereby opening the air inlet.

[0016] Optionally, the spray body includes a first housing with a hollow portion; the elastic structure is located in the hollow portion, one end of the elastic structure is connected to the first housing, and the other end is suspended.

[0017] Optionally, the spray body includes a first housing, and the one-way valve is integrally formed into the first housing.

[0018] Optionally, the spray body includes a first housing, and the nose pad is detachably connected to the first housing.

[0019] Optionally, the first housing includes a first annular mounting portion, and the nose pad is sleeved on the outer periphery of the first annular mounting portion with an interference fit.

[0020] Optionally, the first housing includes a second annular mounting portion formed on the outer wall of the first annular mounting portion; the second annular mounting portion has a notch, which is open towards the side facing the nose pad;

[0021] The one-way valve is disposed on the first annular mounting portion, and is partially opposite to the notch in the radial position of the second annular mounting portion;

[0022] The nose pad has an extension arm at its first end facing the spray body, the air inlet is located on the extension arm, the first end abuts against the end surface of the second annular mounting part, and the extension arm is inserted into the notch.

[0023] Optionally, the spraying device further includes a mouthpiece with a channel for supplying air to the mouth.

[0024] Optionally, the spray body includes a nozzle chip configured to spray particles with a size distribution D. 50 Fog droplets <10μm.

[0025] Optionally, the spray body further includes:

[0026] A pump assembly, comprising a pump body and an infusion tubing;

[0027] A container for holding liquid, with the two ends of the infusion tube inserted into the pump body and the container, respectively;

[0028] A retainer, which is connected to the infusion tubing;

[0029] An elastic element, one end of which abuts against the retaining element;

[0030] When liquid aspiration is triggered, the retaining member moves the infusion tube along a first direction under external force, so that the infusion tube draws liquid from the container, and the elastic member is compressed.

[0031] When the injection is triggered, the elastic element rebounds to push the retaining element to move the infusion tube along a second direction, which is opposite to the second direction.

[0032] Optionally, the spray body further includes an actuator that, when rotated under external force, drives the retaining member to move along a first direction to trigger liquid aspiration.

[0033] Optionally, the spray body also includes a blocking element and a trigger button;

[0034] When aspiration is complete, the blocking element prevents the retainer from moving in the second direction; when the trigger button is pressed, the trigger button pushes the blocking element to move, thereby releasing the obstruction.

[0035] This utility model has the following technical effects:

[0036] This invention provides a nasal spray device. The nose pad has an air inlet, and a flow channel is formed between the nose pad and the spray body. A one-way valve is provided. The one-way valve is configured to allow external air to enter the flow channel through the air inlet of the nose pad, but not allow air in the flow channel to be discharged through the air inlet. This ensures that air can only enter and not exit at the air inlet. This ensures that the user can inhale through the nose pad to assist in the spray. At the same time, when the user exhales, the air pressure in the flow channel is greater than the external air pressure because the air inlet is closed by the one-way valve. The exhaled air cannot enter the nose pad, thus avoiding the resistance of the exhaled airflow to the sprayed droplets caused by the user's exhalation, and preventing the exhaled airflow from carrying some droplets out of the air inlet, thereby ensuring the spraying effect. Attached Figure Description

[0037] Figure 1 This is a cross-sectional view of the spray device in the liquid absorption completed state in the first embodiment of this utility model;

[0038] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0039] Figure 3 This is a cross-sectional view of the spray device in the spraying state according to the first embodiment of this utility model;

[0040] Figure 4 This is a three-dimensional structural diagram of the nose bridge of this utility model;

[0041] Figure 5 This is a cross-sectional view of the nose pad of this utility model;

[0042] Figure 6 This is a three-dimensional structural diagram of the first housing of this utility model;

[0043] Figure 7 This is a partial cross-sectional view of the first housing of this utility model;

[0044] Figure 8 This is a cross-sectional view of the first housing of this utility model;

[0045] Figure 9 This is a three-dimensional structural diagram of the blocking element of this utility model;

[0046] Figure 10 This is a side view of the blocking element of this utility model;

[0047] Figure 11 This is a bottom view of the blocking element of this utility model;

[0048] Figure 12 This is a three-dimensional structural diagram of the trigger button of this utility model;

[0049] Figure 13 This is a cross-sectional view of the trigger button of this utility model;

[0050] Figure 14 This is a partial structural cross-sectional view of the pump assembly of this utility model;

[0051] Figure 15 This is a cross-sectional view of the nozzle chip of this utility model;

[0052] Figure 16 for Figure 15 Enlarged view at point C;

[0053] Figure 17 This is a schematic diagram of the assembly structure of the retaining component and the infusion tube of this utility model;

[0054] Figure 18 This is a three-dimensional structural diagram of the actuator of this utility model;

[0055] Figure 19 This is a cross-sectional view of the container of this utility model;

[0056] Figure 20This is a three-dimensional structural diagram of the spraying device in the first embodiment of the present invention;

[0057] Figure 21 This is a cross-sectional view of the spray device in the second embodiment of the present invention.

[0058] Explanation of reference numerals in the attached figures

[0059] 100. Spraying device;

[0060] 1. Sprayer unit;

[0061] 11. Pump assembly; 111. Nozzle; 112. Nozzle chip; 1121. Liquid channel; 1122. Liquid outlet channel; 11221. Acceleration section; 11222. Translation section; 11223. Liquid outlet; 113. Pump body; 1131. Infusion channel; 114. Infusion tubing; 1141. Infusion check valve; 115. Filter element;

[0062] 12. First housing; 121. One-way valve; 1211. Elastic structure; 12111. Connecting arm; 12112. Valve body; 1212. Protruding structure; 122. Hollowed-out portion; 123. First annular mounting portion; 124. Second annular mounting portion; 1241. Notch; 125. Annular support portion; 126. First guide slope; 127. Second stop surface; 128. Mounting channel; 1281. Skirt;

[0063] 13. Container; 131. Outer shell; 1311. Air inlet; 132. Inner shell; 133. Inner liner; 134. Inlet;

[0064] 14. Holding component; 141. First abutment surface; 142. Gripper; 143. Limiting groove; 144. Second guide slope; 145. End face;

[0065] 15. Elastic components;

[0066] 16. Actuator; 161. Limiting protrusion; 162. Boss; 163. Third abutment surface; 164. First protrusion; 1641. First guide surface; 1642. First transition surface;

[0067] 17. Blocking element; 171. First surface; 172. Second surface; 173. Third surface; 174. Insertion groove; 175. Second protrusion; 1751. Second guide surface; 1752. Second transition surface; 176. Limiting rib; 177. Limiting groove;

[0068] 18. Trigger button; 181. Pressing surface; 182. Insertion protrusion;

[0069] 19. Second housing; 2. Nose support; 21. Nose support opening; 22. Air inlet; 23. First end; 24. Extension arm;

[0070] 3. Flow channel;

[0071] 4. Mouth support component; 41. Channel. Detailed Implementation

[0072] To make the technical solution and beneficial effects of this utility model more apparent and understandable, a detailed description is provided below by listing specific embodiments. 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.

[0073] In the description of this utility model, unless otherwise expressly defined, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., 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 utility model 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 limitations on this utility model.

[0074] In this utility model, 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 specified as "first" or "second" can explicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two; "several" means at least one; unless otherwise expressly defined.

[0075] In this utility model, 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 molding; 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 utility model according to the specific circumstances.

[0076] In this utility model, unless otherwise explicitly defined, the terms "above," "on top of," "above," "over," "below," "below," "below," or "below" for "first feature above second feature" can refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Furthermore, "above," "above," and "over" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0077] In this utility model, "first direction a" and "second direction b" both refer to... Figure 1 , Figure 3 , Figure 20 and Figure 21 The markings in the text shall prevail.

[0078] The following is based on Figures 1 to 21 This invention provides a detailed description of the spraying device.

[0079] In this embodiment, such as Figures 1 to 3 , Figure 20 As shown, the spray device 100 is used to deliver drug droplets into the nasal cavity. The spray device 100 includes a spray body 1, a nose pad 2, and a one-way valve 121. The spray body 1 includes a nozzle 111, through which the spray body 1 sprays droplets into the nose pad 2. The nose pad 2 includes a nose pad opening 21 and an air inlet 22. A flow channel 3 is formed between the nose pad 2 and the spray body 1. The droplets sprayed from the nozzle 111 enter the nasal cavity sequentially through the flow channel 3 and the nose pad opening 21.

[0080] When using the spray device 100, the user can choose whether to inhale to assist in drug delivery based on the delivery depth of the droplets. If the spray power provided by the spray body 1 can meet the required delivery depth, the user does not need to inhale. If the spray power provided by the spray body 1 cannot meet the required delivery depth, the user can inhale through the nose pad 21. At this time, the external airflow enters the flow channel 3 through the air inlet 22 and propels the droplets sprayed from the nozzle 111, so that the droplets reach a deeper part.

[0081] Furthermore, if the user exhales while using the spray device 100, the exhaled airflow will cause the droplets sprayed from the nozzle 111 to encounter resistance, affecting the delivery depth of the droplets. Also, if the air inlet on the nose pad can both allow air in and out, the exhaled airflow may carry some droplets out through the air inlet on the nose pad, resulting in waste and reducing the effective supply. In this solution, a one-way valve 121 is set up, and the one-way valve 121 is configured to allow external gas to enter the flow channel 3 through the air inlet 22 but not allow the gas in the flow channel 3 to be discharged through the air inlet 22. This ensures that air can only enter and not exit at the air inlet 22. This ensures that the user can inhale with the help of the nose pad 2. At the same time, when the user exhales, because the air inlet 22 is closed by the one-way valve 121, the air pressure in the flow channel 3 is greater than the external air pressure. The exhaled air cannot enter the nose pad 2. This avoids the resistance to the advance of the mist droplets sprayed from the nozzle 111 caused by the user's exhalation, and avoids the exhaled airflow carrying some mist droplets out of the air inlet 22, thus ensuring the spraying effect.

[0082] In one implementation, such as Figure 2 and Figure 6 As shown, the one-way valve 121 includes an elastic structure 1211. When exhaling through the nose pad opening 21, the elastic structure 1211 abuts against the inner wall of the nose pad 2 and covers the air inlet 22 to seal the air inlet 22, thereby preventing gas in the flow channel 3 from escaping through the air inlet 22. When inhaling through the nose pad opening 21, the elastic structure 1211 elastically deforms at least partially under air pressure to open the air inlet 22, allowing external gas to enter the flow channel 3 from the air inlet 22 to facilitate the delivery of mist droplets.

[0083] Furthermore, such as Figure 2 , Figures 6 to 8 As shown, the one-way valve 121 also includes a protruding structure 1212, which is connected to the side of the elastic structure 1211 facing the air inlet 22. When exhaling through the nose through the nose pad 21, the elastic structure 1211 at least partially deforms elastically, causing the protruding structure 1212 to compress the air inlet 22, thereby closing the air inlet 22. When inhaling through the nose through the nose through the nose pad 21, the elastic structure 1211 at least partially deforms elastically, causing the protruding structure 1212 to move away from the air inlet 22, thereby opening the air inlet 22. In this design, the protruding structure 1212 compresses the air inlet 22 to further enhance the sealing effect of the one-way valve 121 on the air inlet 22 when the user exhales.

[0084] Furthermore, such as Figure 2 and Figure 6As shown, the elastic structure 1211 includes a connecting arm 12111 and a valve body 12112. One end of the connecting arm 12111 is connected to the first housing 12. The valve body 12112 is circular in shape, and a protruding structure 1212 is provided on the outer surface of the valve body 12112. Of course, the shape of the valve body 12112 is not limited to a circular shape, but can also be any other regular or irregular shape, such as a square, a triangle, etc.

[0085] Furthermore, such as Figure 6 and Figure 7 As shown, the spray body 1 includes a first housing 12, which has a perforated portion 122; an elastic structure 1211 is located in the perforated portion 122, with one end of the elastic structure 1211 connected to the first housing 12 and the other end suspended to improve the deformation capacity of the elastic structure 1211, which facilitates rapid deformation of the elastic structure 1211 to quickly open or close the air inlet 22 of the nose pad 2. Furthermore, as... Figure 20 As shown, the gap between the inner wall of the nose pad 2 and the hollowed-out part 122 and the elastic structure 1211 is closed to prevent gas from flowing between the flow channel 3 and the outside.

[0086] In one implementation, such as Figure 6 As shown, the one-way valve 121 is integrally formed on the first housing 12 to reduce the number of parts.

[0087] In one implementation, such as Figure 1 and Figure 8 As shown, the first housing 12 is provided with an annular support portion 125, and the pump assembly 11 includes a pump body 113, which is inserted into the annular support portion 125.

[0088] In one implementation, such as Figure 1 As shown, the nose pad 2 is detachably connected to the first housing 12. The nose pad 2 is detachable for easy cleaning or replacement.

[0089] Furthermore, such as Figure 1 , Figure 6 and Figure 20 As shown, the first housing 12 includes a first annular mounting portion 123, and the nose pad 2 is sleeved on the outer periphery of the first annular mounting portion 123 with an interference fit. The user can pull the nose pad 2 outward to remove the nose pad 2.

[0090] Furthermore, such as Figure 6As shown, the first housing 12 includes a second annular mounting portion 124, which is formed on the outer wall of the first annular mounting portion 123. The centerlines of the first annular mounting portion 123 and the second annular mounting portion 124 are axially coincident. The radial dimension of the outer contour of the second annular mounting portion 124 is larger than that of the second annular mounting portion 124. The second annular mounting portion 124 has a notch 1241, which is open on the side facing the nose pad 2. A one-way valve 121 is provided on the first annular mounting portion 123. The one-way valve 121 is partially opposite to the notch 1241 in a radial position on the second annular mounting portion 124. Figure 4 and Figure 5 As shown, the nose pad 2 has an extension arm 24 at its first end 23 facing the spray body 1, and the air inlet 22 is located on the extension arm 24. Figure 4 , Figure 6 and Figure 20 As shown, when the nose pad 2 is assembled with the first housing 12, the first end 23 abuts against the end surface of the second annular mounting portion 124, and the extension arm 24 is inserted into the notch 1241. The inner wall of the extension arm 24 closes the gap between the hollow portion 122 and the elastic structure 1211. In this design, the extension arm 24 cooperates with the notch 1241 to serve as a positioning element, facilitating rapid assembly of the two components.

[0091] In one implementation, such as Figure 1 , Figure 4 and Figure 6 As shown, there are two air inlets 22, evenly spaced apart along the circumference of the nose pad 2. The number of one-way valves 121 is the same as the number of air inlets 22, and they are matched one-to-one to facilitate inhalation. Of course, the number of air inlets 22 is not limited to two; there can be more.

[0092] In one implementation, such as Figure 21 As shown, the spray device 100 also includes a mouth support component 4, which includes a channel 41. The user can blow air in through the mouth support component 4. When the user blows air in through the mouth, the air pressure in the soft palate and oral cavity at the junction of the nasopharynx and oropharynx increases, and the soft palate closes, separating the nasal cavity and oral cavity. In this way, during the transport of the sprayed droplets in the nasal cavity, the droplets will not or will not easily enter the oral cavity, thereby preventing the droplets from entering the lungs through the bronchi.

[0093] In one implementation, such as Figure 1 , Figure 15 and Figure 16 As shown, the spray body 1 includes a nozzle chip 112, which is configured to spray particles with a particle size distribution D. 50 Droplets <10μm. Existing spray devices mainly involve manually pressing the nasal spray pump to propel the liquid medication out. The particle size distribution D of the atomized droplets sprayed by this device is...50 Typically larger than 20 μm, particles of this size can only deposit in a straight-line impact manner along the particle outlet direction. Due to the complex structure of the nasal cavity, most of these linearly impacting particles deposit in the nasal vestibule region or the anterior end of the nasal turbinate region, affecting drug delivery efficacy. However, in this application, the nozzle chip 112 can eject particles with a particle size distribution D... 50 Droplets smaller than 10 μm are more likely to deposit deep within the nasal cavity, which is beneficial for drug delivery.

[0094] Furthermore, the nozzle chip 112 is made of silicon-based material, such as... Figure 15 and Figure 16 As shown, the nozzle chip 112 includes a liquid channel 1121 and two liquid outlet channels 1122. Each liquid outlet channel 1122 includes a surge section 11221, a translation section 11222, and an outlet 11223, sequentially distributed along the liquid flow direction. The surge section 11221 gradually decreases in size along the liquid flow direction. The translation section 11222 has the same cross-sectional area at each part. The translation sections of the two liquid outlet channels 1122 form an angle of 75-105°, preferably 90°. After entering the nozzle chip 112, the liquid sequentially passes through the liquid channel 1121, the surge section 11221, and the translation section 11222. The liquid is accelerated in the surge section 11221, laminarized in the translation section 11222, and then ejected at ultra-high speed from the two outlets 11223, colliding at the nozzle 111 to form droplets.

[0095] In one implementation, such as Figure 1 , Figure 14 , Figure 17 and Figure 18 As shown, the spray body 1 also includes a pump assembly 11, a container 13, a retainer 14, and an elastic member 15. The pump assembly 11 includes a nozzle 111, a nozzle chip 112, a pump body 113, and an infusion tube 114. The container 13 is used to contain liquid. The pump body 113 is provided with an infusion channel 1131. A filter element 115 is provided between the infusion channel 1131 and the nozzle chip 112. One end of the infusion tube 114 is inserted into the container 13, and the other end is inserted into the infusion channel 1131. The retainer 14 is connected to the infusion tube 114. One end of the elastic member 15 abuts against the first stop surface 141 of the retainer 14. An infusion check valve 1141 is provided at one end of the infusion tube 114 inserted into the infusion channel 1131. The infusion check valve 1141 is configured to allow liquid in the infusion tube 114 to enter the infusion channel 1131 but not allow liquid in the infusion channel 1131 to enter the infusion tube 114.

[0096] like Figure 1As shown, when liquid aspiration is triggered, the retaining member 14, under external force, drives the infusion tube 114 to move along the first direction a. The infusion tube 114 moves away from the infusion channel 1131, increasing the available space in the infusion channel 1131, so that the infusion tube 114 can draw liquid from the container 13. Furthermore, during the movement of the retaining member 14 along the first direction a, the elastic member 15 is compressed and stores energy. Figure 3 As shown, when the injection is triggered, the elastic element 15 rebounds, pushing the retaining element 14 to move the infusion tube 114 along the second direction b, so as to squeeze the liquid in the infusion channel 1131 into the nozzle chip 112, and then spray the droplets through the nozzle 111 to the nose pad mouth 21. The first direction a is opposite to the second direction b. Figure 3 The middle arrow B indicates the sprayed droplets. In this solution, the infusion tube 114 is moved by the active drive of the elastic element 15 to achieve spraying. Compared with the manual pressing drive method of the nasal spray pump in the prior art, this solution eliminates the difference in spray effect caused by the difference in individual pressing pressure.

[0097] In one specific embodiment, the first direction 'a' is downward and the second direction 'b' is upward. Of course, the orientation of the first direction 'a' and the second direction 'b' is not limited to this; they can also be two directions in the left-right direction or two directions in the front-back direction.

[0098] In one implementation, such as Figure 1 As shown, the elastic element 15 is a spring, which is located in the retaining element 14 and sleeved on the outer periphery of the container 13. Figure 1 and Figure 17 As shown, the retainer 14 is provided with a gripper 142 to hold the container 13, which is removable for replacement.

[0099] In one implementation, such as Figure 1 and Figure 18 As shown, the spray body 1 also includes an actuator 16. When the actuator 16 rotates under external force, the actuator 16 drives the retainer 14 to move along the first direction a to trigger liquid absorption.

[0100] Specifically, such as Figure 1 , Figure 17 and Figure 18As shown, the actuator 16 is cylindrical, and the retainer 14 is located inside the actuator 16. The inner wall of the actuator 16 is provided with a limiting protrusion 161 and a boss 162. The other end of the elastic member 15 abuts against the boss 162 along the first direction a. The outer wall of the retainer 14 is provided with a limiting groove 143, which extends along the first direction a. The limiting protrusion 161 is movably inserted into the limiting groove 143. The interior of the first housing 12 is provided with a first guide slope 126, and the retainer 14 is provided with a second guide slope 144. When the actuator 16 rotates under external force, the first guide slope 126 and the second guide slope 144 cooperate. At the same time, under the limiting of the limiting groove 143 by the limiting protrusion 161, the retainer 14 rotates with the actuator 16 and also moves relative to the actuator 16 along the first direction a to trigger liquid aspiration.

[0101] In one implementation, such as Figure 1 , Figures 9 to 13 As shown, the spray body 1 also includes a blocking element 17 and a trigger button 18. Figure 1 As shown, when aspiration is complete, the blocking element 17 prevents the retaining member 14 from moving along the second direction b; as Figure 3 As shown, when the trigger button 18 is pressed, the trigger button 18 pushes the blocking element 17 to move, thereby releasing the blockage. In this design, the user needs to press the trigger button 18 to initiate spraying after aspiration is complete, thus avoiding triggering spraying before the user is ready.

[0102] Specifically, such as Figure 1 , Figures 8 to 13 , Figure 17 and Figure 18As shown, the blocking element 17 is annular, the first housing 12 has a second abutment surface 127, and the actuator 16 has a third abutment surface 163. The main body of the blocking element 17 is annular and is located between the second abutment surface 127 and the third abutment surface 163. The side of the blocking element 17 facing the second abutment surface 127 includes a first surface 171, and the side of the blocking element 17 facing the third abutment surface 163 includes a second surface 172 and a third surface 173. The second surface 172 protrudes from the third surface 173 along a first direction a. The first surface 171 abuts against the third abutment surface 163 along the first direction a, and the second surface 172 abuts against the second abutment surface 127 along a second direction b, thereby restricting the movement of the blocking element 17 in the first direction a or the second direction b. When liquid aspiration is complete, the blocking element 17 is in the blocking position, and the third surface 173 abuts against the end face 145 of the retainer 14 along the first direction a to prevent the retainer 14 from moving along the second direction b. At this time, the central axis of the blocking element 17 does not coincide with the central axis of the retainer 14. When the user presses the trigger button 18, the trigger button 18 can push the blocking element 17 to move, so that the third surface 173 disengages from the end face 145 of the retainer 14. In this way, the retainer 14 can move along the second direction b under the rebound force of the elastic element 15. At this time, the central axis of the blocking element 17 coincides with the central axis of the retainer 14.

[0103] Furthermore, such as Figure 1 , Figure 6 , Figure 8 and Figure 13 As shown, the first housing 12 has a mounting channel 128, and the trigger button 18 is movably mounted in the mounting channel 128. The trigger button 18 is inserted into the blocking element 17 so that the trigger button 18 and the blocking element 17 are linked. Thus, when the user presses the trigger button 18, the trigger button 18 can push the blocking element 17 to move synchronously, causing the blocking element 17 to leave the blocking position. Furthermore, when the blocking element 17 returns to the blocking position, the blocking element 17 can also push the trigger button 18 back to its initial position. The outline of the mounting channel 128 extends outward to form a skirt 1281, and the pressing surface 181 of the trigger button 18 can be flush with the skirt 1281. Figure 1 As shown, the trigger button 18 can also protrude from the outer contour of the skirt 1281.

[0104] Furthermore, such as Figure 1 , Figure 9 and Figure 13 As shown, the trigger button 18 is provided with a plug-in protrusion 182, and the blocking element 17 is provided with a plug-in groove 174. The plug-in protrusion 182 is plugged into the plug-in groove 174 and the two are interference fit.

[0105] In one implementation, such as Figure 18As shown, the actuator 16 has a first protrusion 164 on the side facing the blocking element 17, as... Figure 9 and Figure 11 As shown, the blocking element 17 has a second protrusion 175 on the side facing the actuator 16, and the second protrusion 175 protrudes from the third surface 173. When the actuator 16 rotates to trigger liquid aspiration, the first protrusion 164 pushes the second protrusion 175 so that the blocking element 17 translates to the blocking position, so that the blocking element 17 prevents the retainer 14 from moving along the second direction b.

[0106] Furthermore, such as Figure 18 As shown, the first protrusion 164 is provided with a first guide surface 1641 and a first transition surface 1642, such as Figure 9 and Figure 11 As shown, the second protrusion 175 has a second guide surface 1751 and a second transition surface 1752. When the actuator 16 rotates to trigger liquid aspiration, the first guide surface 1641 and the second guide surface 1751 are in surface-to-surface engagement. The first guide surface 1641 pushes the second guide surface 1751 to drive the blocking element 17 back to the blocking position. When the actuator 16 rotates until the first guide surface 1641 passes the second guide surface 1751, the first transition surface 1642 abuts against the second transition surface 1752, and the first transition surface 1642 moves along the second transition surface 1752 until the first protrusion 164 passes the second protrusion 175, and the actuator 16 continues to rotate. In addition, during the resetting movement of the blocking element 17, the blocking element 17 pushes the trigger button 18 to move to its initial position.

[0107] In one implementation, such as Figure 9 As shown, the blocking element 17 is provided with a limiting rib 176 and a limiting groove 177. The limiting rib 176 and the limiting groove 177 are distributed in sequence along the radial direction of the main body of the blocking element 17. During the translation of the blocking element 17, the limiting rib 176 cooperates with the first housing 12, and the limiting groove 177 cooperates with the first housing 12 to guide the blocking element 17 to translate and prevent the blocking element 17 from rotating.

[0108] In one implementation, such as Figure 1 and Figure 20 As shown, the spray body 1 also includes a second housing 19, which is connected to the outer periphery of the actuator 16. The first housing 12 and the second housing 19 together form the outer contour structure of the spray body 1, improving the aesthetics of the outer contour and preventing mechanical injury to the user during use of the spray device 100. The user can rotate the second housing 19, which drives the actuator 16 to rotate, thereby triggering liquid aspiration.

[0109] In one implementation, such as Figure 1 and Figure 19As shown, container 13 has a three-layer structure, consisting of an outer shell 131, an inner shell 132, and an inner liner 133 from the outside in. The outer shell 131 is made of a relatively rigid material, while the inner liner 133 is a soft bag. The upper part of container 13 is provided with an inlet 134 for the infusion tube 114 to pass through. The outer shell 131 is provided with an air inlet 1311. Gas outside container 13 can pass through the air inlet 1311, then through the inner shell 132, and enter the outer periphery of the inner liner 133 to balance the air pressure in the inner liner 133.

[0110] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this utility model that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this utility model and do not limit the scope of protection of this utility model patent.

Claims

1. A nasal spray device, characterized in that, The spraying device (100) includes: The spray body (1) includes a nozzle (111); The nose pad (2) includes a nose pad opening (21) and an air inlet (22). A flow channel (3) is formed between the nose pad (2) and the spray body (1). The droplets sprayed from the nozzle (111) enter the nasal cavity sequentially through the flow channel (3) and the nose pad opening (21). A one-way valve (121) is configured to allow outside gas to enter the flow channel (3) through the inlet (22) and to prevent gas in the flow channel (3) from being discharged through the inlet (22).

2. The nasal spray device according to claim 1, characterized in that, The one-way valve (121) includes an elastic structure (1211). When the nasal cavity exhales from the nose pad opening (21), the elastic structure (1211) abuts against the inner wall of the nose pad (2) and covers the air inlet (22) to seal the air inlet (22). When air is inhaled through the nasal cavity from the nose pad opening (21), the elastic structure (1211) is elastically deformed at least partially under the action of air pressure to open the air inlet (22).

3. The nasal spray device according to claim 2, characterized in that, The one-way valve (121) also includes a protruding structure (1212) connected to the side of the elastic structure (1211) facing the air inlet (22); When the nasal cavity exhales from the nose pad opening (21), the elastic structure (1211) deforms elastically at least partially, causing the protruding structure (1212) to squeeze the air inlet (22) to close the air inlet (22). When air is inhaled through the nasal cavity from the nose pad opening (21), the elastic structure (1211) deforms elastically at least partially, causing the protruding structure (1212) to move away from the air inlet (22) to open the air inlet (22).

4. The nasal spray device according to claim 3, characterized in that, The spray body (1) includes a first shell (12) with a hollowed-out portion (122); the elastic structure (1211) is located in the hollowed-out portion (122), one end of the elastic structure (1211) is connected to the first shell (12), and the other end is suspended.

5. The nasal spray device according to any one of claims 1-4, characterized in that, The spray body (1) includes a first housing (12), and the one-way valve (121) is integrally formed on the first housing (12).

6. The nasal spray device according to any one of claims 1-4, characterized in that, The spray body (1) includes a first housing (12), and the nose pad (2) is detachably connected to the first housing (12).

7. The nasal spray device according to claim 6, characterized in that, The first housing (12) includes a first annular mounting portion (123), and the nose pad (2) is sleeved on the outer periphery of the first annular mounting portion (123) with an interference fit.

8. The nasal spray device according to claim 7, characterized in that, The first housing (12) includes a second annular mounting portion (124) formed on the outer wall of the first annular mounting portion (123); the second annular mounting portion (124) is provided with a notch (1241) which is open to the side facing the nose pad (2); The one-way valve (121) is disposed on the first annular mounting portion (123), and is partially opposite to the notch (1241) in the radial position of the second annular mounting portion (124); The nose pad (2) is provided with an extension arm (24) at the first end (23) facing the spray body (1), the air inlet (22) is located on the extension arm (24), the first end (23) abuts against the end surface of the second annular mounting part (124), and the extension arm (24) is inserted into the notch (1241).

9. The nasal spray device according to any one of claims 1-4, characterized in that, The spray device (100) also includes a mouthpiece (4) which includes a channel (41) for supplying air to the mouth.

10. The nasal spray device according to any one of claims 1-4, characterized in that, The spray body (1) includes a nozzle chip (112), which is configured to spray particles with a particle size distribution D. 50 Fog droplets <10μm.

11. The nasal spray device according to any one of claims 1-4, characterized in that, The spray body (1) also includes: Pump assembly (11), which includes pump body (113) and infusion tubing (114). A container (13) for holding liquid, with the two ends of the infusion tube (114) inserted into the pump body (113) and the container (13) respectively. A retainer (14) is connected to the infusion tube (114); The elastic element (15) has one end abutting against the retaining element (14); When liquid aspiration is triggered, the retaining member (14) drives the infusion tube (114) to move along the first direction (a) under external force, so that the infusion tube (114) aspirates liquid from the container (13), and the elastic member (15) is compressed. When the injection is triggered, the elastic element (15) rebounds to push the retaining element (14) to move the infusion tube (114) along the second direction (b), the first direction (a) being opposite to the second direction (b).

12. The nasal spray device according to claim 11, characterized in that, The spray body (1) also includes an actuator (16). When the actuator (16) rotates under external force, the actuator (16) drives the retainer (14) to move along the first direction (a) to trigger liquid aspiration.

13. The nasal spray device according to claim 11, characterized in that, The spray body (1) also includes a blocking element (17) and a trigger button (18); When aspiration is complete, the blocking element (17) prevents the retainer (14) from moving in the second direction (b); when the trigger button (18) is pressed, the trigger button (18) pushes the blocking element (17) to move, thereby releasing the blockage.

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