Nasal spray device

Abstract

The present invention relates to a nasal spray device comprising: a container; the pump assembly comprises a liquid conveying piece; the nose bearing structure is provided with a nose bearing opening; an air flow channel is formed between an air blowing opening and the nose bell opening of the mouth bearing structure; the locking mechanism comprises a locking element; the locking mechanism comprises a locking element linked with the locking element; when liquid suction is triggered, the liquid conveying piece moves in the first direction so as to suck liquid from the container. When liquid suction is completed, the locking element directly or indirectly locks the infusion piece so as to prevent the infusion piece from moving in the second direction to trigger spraying; when the pressure of the air flow blown in from the air blowing port is larger than a preset value, the air flow pushes the locking element to move to the opening position so as to open the air flow channel, and the locking element can be triggered by movement of the locking element so that locking can be relieved. According to the nasal spray device, the atomization difference effect caused by individual pressing force difference is avoided, hand pressing operation is omitted, operation is more convenient, and conveying and deposition of small-particle-size fog drop particles in the nasal cavity are facilitated through assistance of airflow.

Description

Technical Field

[0001] This invention 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 and is commonly used to treat nasal diseases or relieve migraine symptoms. Because nasal administration bypasses the gastrointestinal tract, it avoids the first-pass effect of oral medications, allowing the drug to directly enter the bloodstream, thus improving absorption and bioavailability. Nasal sprays deliver the drug as a liquid mist, allowing direct contact with the nasal mucosa for a more effective therapeutic effect.

[0003] Currently, most nasal spray devices on the market rely on manual downward or upward pressure by the operator to drive the nasal spray pump and thus spray the medication. Different pressure levels can lead to inconsistent drug delivery. In addition, some nasal spray devices are equipped with a mouthpiece, through which airflow is blown in to assist in the delivery of the atomized medication. However, when using these devices, the user needs to perform both blowing and downward or upward pressure simultaneously, which is difficult for most operators to coordinate, making the operation inconvenient. Summary of the Invention

[0004] Based on the aforementioned deficiencies in the prior art, the present invention aims to provide a nasal spray device. The nasal spray device adds a mouth-holding structure, a locking mechanism, and a stopping mechanism, and links the locking mechanism and the stopping mechanism together. The operator can trigger the locking mechanism to open the airflow channel and trigger the stopping mechanism to unlock the pump assembly by blowing air, which can avoid the difference in atomization effect caused by individual differences in pressing pressure, eliminate the need for hand pressing operation, make operation more convenient, and the airflow assistance is conducive to the transport and deposition of fine droplet particles in the nasal cavity.

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

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

[0007] A container used to hold liquids;

[0008] A pump assembly, including a delivery element that extends into the container at one end;

[0009] The nose support structure is equipped with a nose support opening;

[0010] The mouth-support structure is provided with an air inlet, and an airflow channel is formed between the air inlet and the nose-support mouth;

[0011] A locking mechanism, comprising a locking element for closing or opening the airflow passage;

[0012] A locking mechanism, comprising a locking element that is linked to the locking element;

[0013] When liquid aspiration is triggered, the infusion device moves along a first direction to draw liquid from the container; when liquid aspiration is completed, the locking element directly or indirectly locks the infusion device to prevent the infusion device from moving along a second direction to trigger spraying, wherein the first direction is opposite to the second direction.

[0014] When the nasal spray device is in a non-spraying state, the locking element is in a closed position to close the airflow channel; when the pressure of the airflow blown in from the air outlet is greater than a preset value, the airflow pushes the locking element to move to the open position to open the airflow channel, and the movement of the locking element can trigger the movement of the locking element to release the lock, thereby triggering the spray. The airflow blown in from the air outlet flows toward the nasal inlet to provide auxiliary power for the liquid sprayed by the pump assembly.

[0015] Optionally, the locking element closes or opens the airflow passage by closing or opening the channel in the bearing structure.

[0016] Optionally, the nasal spray device further includes a retainer connected to the infusion device;

[0017] When the liquid aspiration is complete, the retainer abuts against the locking element along the second direction and is locked in place.

[0018] Optionally, when the locking element moves to the open position along a third direction, it can trigger the locking element to move along a fourth direction to release the lock, wherein the third direction is opposite to the fourth direction.

[0019] Optionally, the first direction is perpendicular to the third direction.

[0020] Optionally, the inlet support structure includes an inlet channel and a partition distributed sequentially along the airflow direction, the partition being provided with a first through hole, and the locking element including a first end;

[0021] The first end abuts against the partition and closes the first through hole to seal the airflow passage; the locking element moves away from the first through hole to open the airflow passage.

[0022] Optionally, the locking mechanism includes a first elastic element;

[0023] When the nasal spray device is in a non-spraying state, the first elastic element presses against the locking element to close the first through hole at the first end.

[0024] When the pressure of the airflow blown in from the air outlet is greater than the elastic force of the first elastic element, the locking element moves and compresses the first elastic element.

[0025] Optionally, when the locking element is in the open position and the locking element is in the unlocked position, the locking element can prevent the locking element from resetting to the closed position;

[0026] And / or, when liquid aspiration is triggered, the locking element undergoes a reset movement, and the reset movement of the locking element can trigger the locking element to reset.

[0027] Optionally, the nasal spray device includes a linkage element, the first end of which is connected to the locking element;

[0028] When the locking element is in the closed position, the second end of the linkage element is restricted by the locking element, so that the linkage element restricts the locking element to the locked position;

[0029] When the locking element moves toward the open position, the locking element releases its restriction on the linkage element, thereby releasing the linkage element from its restriction on the locking element. The locking element can then move to the unlock position and release the lock.

[0030] Optionally, when the locking element moves to the open position, the linkage element restricts the locking element from resetting.

[0031] Optionally, the first end is rotatably connected to the locking element, and the locking element includes an extension arm with a clearance hole.

[0032] When the locking element is in the closed position, the second end abuts against the surface wall of the extension arm and is restricted.

[0033] When the locking element moves toward the open position, the clearance hole moves to allow the second end to extend in, so that the linkage element can rotate to release the restriction on the locking element.

[0034] Optionally, when the locking element moves to the open position, the portion of the second end extending into the clearance hole can lock the extension arm to restrict the locking element from resetting.

[0035] Optionally, when the locking element moves from the unlocked position to the locked position under external force, the linkage element rotates and the second end disengages from the clearance hole, so that the locking element can be reset to the closed position under external force. At this time, the second end of the linkage element is restricted again by the surface wall of the extension arm and cannot rotate, so that the linkage element restricts the locking element to the locked position.

[0036] Optionally, the nasal spray device includes a first housing, which includes a first limiting arm;

[0037] The first limiting arm abuts against the extension arm, and the two form an angle structure; when the locking element is in the closed position, the second end is engaged with the angle structure to restrict rotation.

[0038] Optionally, the second end includes a first abutting surface in the shape of a plane and a second abutting surface in the shape of an arc;

[0039] When the locking element is in the closed position, the first abutting surface abuts against the first limiting arm and the two surfaces are in surface-to-surface cooperation, and the second abutting surface abuts against the extension arm and the two surfaces are in point-to-surface cooperation.

[0040] Optionally, the first limiting arm has a first mounting post on the side facing away from the linkage element, and the locking element includes a limiting groove;

[0041] The locking mechanism includes a first elastic element, one end of which is sleeved on a first mounting post and the other end is inserted into the limiting groove. The first elastic element is used to hold the locking element in the closed position.

[0042] Optionally, the locking element includes an annular body and a first mounting portion, the pump assembly passes through the annular body, the first mounting portion is connected to a radial side of the annular body, and the first end is rotatably connected to the first mounting portion.

[0043] Optionally, the locking element includes a second mounting post, and the first mounting portion and the second mounting post are respectively connected to the radial sides of the annular body; the locking mechanism further includes a second elastic member, one end of which is sleeved on the second mounting post;

[0044] When the locking element is in the closed position, the second elastic element is in an energy storage state;

[0045] When the locking element releases its restriction on the linkage element, the second elastic element rebounds to push the locking element to move, and the first mounting portion forces the linkage element to rotate and causes the second end to extend into the clearance hole.

[0046] Optionally, the nasal spray device includes:

[0047] A first housing, wherein the pump body of the pump assembly passes through the first housing;

[0048] A second housing is disposed around the first housing and a first channel is formed between the two. A second through hole and a third through hole are provided on one side of the second housing.

[0049] The mouth-bearing structure further includes a sealing sleeve and a second channel, both of which are located on the side of the partition facing away from the inlet channel.

[0050] The sealing sleeve abuts against the outer wall of the second housing and communicates with the second through hole to form an installation channel. The locking element is movably installed in the installation channel. The outlet of the second channel communicates with the third through hole.

[0051] When the locking element is in the open position, the inlet channel, the first through hole, the second channel, the third through hole and the first channel are connected in sequence to form the airflow channel.

[0052] Optionally, the first housing is provided with a first limiting structure, and the second housing is provided with a second limiting structure;

[0053] One of the first limiting structure and the second limiting structure is a slot extending along the first direction, and the other is a protruding rib; the first limiting structure and the second limiting structure cooperate to restrict relative rotation between the first housing and the second housing.

[0054] Optionally, the nasal spray device includes a second housing for forming a portion of the outer contour structure of the nasal spray device, wherein the nose support structure and / or the mouth support structure are detachably mounted to the second housing.

[0055] Optionally, the nasal spray device further includes:

[0056] A retainer, which is connected to the infusion fitting;

[0057] An actuator, wherein the retainer is movably connected to the actuator;

[0058] The third elastic element has one end abutting against the retaining element along the second direction;

[0059] When the actuator rotates under external force, the retaining member rotates along with it and can drive the infusion member to move along the first direction, and the third elastic member is compressed.

[0060] When the locking element releases its lock on the retainer, the third elastic element rebounds, causing the retainer to move the infusion unit along the second direction.

[0061] Optionally, when the actuator rotates, the actuator can drive the locking element to reset to the locked position.

[0062] Optionally, the actuator has a first protrusion with a first guide surface; the locking element has a second protrusion with a second guide surface.

[0063] When the actuator rotates to trigger liquid aspiration, the first guide surface and the second guide surface engage face-to-face to drive the locking element to reset, and the first protrusion can pass over the second protrusion.

[0064] Optionally, the pump assembly further includes a pump body comprising a chip nozzle configured to eject a particle size distribution D 50 Fog droplets <10μm.

[0065] The present invention has the following technical effects:

[0066] This invention provides a nasal spray device. The device incorporates a mouthpiece structure, a locking mechanism, and a stopping mechanism, linking the locking and stopping mechanisms. After the nasal spray device has absorbed liquid, the operator blows air to trigger the locking element of the locking mechanism, opening the airflow channel. Simultaneously, the movement of the locking element triggers the stopping element to unlock, initiating the spray. Compared to existing manual nasal spray pump methods, this solution uses air blowing to trigger the opening of the airflow channel and the pump assembly for spraying. This avoids differences in atomization effects caused by individual differences in pressure applied, and eliminates the need for manual pressing, making operation more convenient. Furthermore, the pump assembly and the airflow from the mouthpiece provide two power sources. The airflow facilitates the transport and deposition of fine droplets within the nasal cavity, resulting in deeper and more extensive deposition of these droplets. Attached Figure Description

[0067] Figure 1 This is a cross-sectional view of the nasal spray device of the present invention in its initial state;

[0068] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0069] Figure 3 This is a cross-sectional view of the nasal spray device of the present invention in the spraying state;

[0070] Figure 4 for Figure 3 Enlarged view at point C;

[0071] Figure 5 This is a cross-sectional view of the bearing structure of the present invention;

[0072] Figure 6 This is a three-dimensional structural diagram of the mouth-bearing structure of the present invention;

[0073] Figure 7 This is a three-dimensional structural diagram of the locking element of the present invention;

[0074] Figure 8 This is a side view of the locking element of the present invention;

[0075] Figure 9 This is a side view of the linkage element of the present invention;

[0076] Figure 10 This is a three-dimensional structural diagram of the linkage element of the present invention;

[0077] Figure 11 This is a three-dimensional structural schematic diagram of the locking element of the present invention;

[0078] Figure 12 This is a side view of the locking element of the present invention;

[0079] Figure 13 This is a three-dimensional structural diagram of the first housing of the present invention;

[0080] Figure 14 This is a cross-sectional view of the first housing of the present invention;

[0081] Figure 15 This is a three-dimensional structural diagram of the second housing of the present invention;

[0082] Figure 16 This is a cross-sectional view of the second housing of the present invention;

[0083] Figure 17 This is a partial structural cross-sectional view of the second housing of the present invention;

[0084] Figure 18 This is a three-dimensional structural diagram of the retaining member of the present invention;

[0085] Figure 19 This is a three-dimensional structural schematic diagram of the actuator of the present invention;

[0086] Figure 20 This is a structural cross-sectional view of the container of the present invention;

[0087] Figure 21 This is a cross-sectional view of the pump body of the present invention;

[0088] Figure 22 This is a schematic diagram of the nozzle chip structure of the present invention;

[0089] Figure 23 This is a three-dimensional structural diagram of the nasal spray device of the present invention.

[0090] Explanation of reference numerals in the attached figures

[0091] 100. Nasal spray device;

[0092] 1. Container; 11. Outer shell; 111. Air inlet; 12. Inner shell; 13. Inner liner; 14. Inlet;

[0093] 2. Pump assembly; 21. Infusion component; 211. Check valve; 22. Pump body; 221. Nozzle assembly; 2211. Chip nozzle; 222. Support body; 2221. Delivery channel; 223. Filter element;

[0094] 3. Nasal support structure; 31. Nasal support opening;

[0095] 4. Mouth support structure; 41. Air inlet; 42. Inlet channel; 43. Partition; 431. First through hole; 44. Sealing sleeve; 45. Second channel;

[0096] 5. Locking mechanism; 51. Locking element; 511. First end; 512. Extension arm; 5121. Relief hole; 513. Limiting groove; 52. First elastic element;

[0097] 6. Locking mechanism; 61. Locking element; 611. Ring-shaped body; 612. First mounting part; 613. Second mounting post; 614. Second protrusion; 6141. Second guide surface; 6142. Second transition surface; 615. First limiting rib; 616. First surface; 617. Second surface; 618. Third surface; 62. Second elastic element;

[0098] 71. Retaining element; 711. Guide groove; 712. Second guide slope; 713. First end face; 714. Limiting surface; 715. Gripper;

[0099] 72. Actuator; 721. First protrusion; 7211. First guide surface; 7212. First transition surface; 722. Guide protrusion; 723. Boss;

[0100] 73. The third elastic element;

[0101] 8. Linkage element; 81. First end; 811. Pivot shaft; 82. Second end; 821. First abutment surface; 822. Second abutment surface; 83. First sidewall; 84. Second sidewall;

[0102] 91. First housing; 911. First limiting arm; 912. First mounting post; 913. First limiting structure; 914. First guide slope; 915. Annular mounting part; 916. Limiting through hole; 917. Skirt; 918. Second limiting rib; 9191. Annular support part; 9192. Support ring;

[0103] 92. Second housing; 921. Second through hole; 922. Third through hole; 923. Second limiting structure; 924. Snap ring; 925. Spring seat; 9251. Sealing retaining ring; 926. Protruding ring;

[0104] 93. First passage;

[0105] 94. The third shell. Detailed Implementation

[0106] 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. 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.

[0107] In the description of this invention, 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," and "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 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.

[0108] 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 specified as "first" or "second" can explicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two; "several" means at least one; unless otherwise expressly defined.

[0109] 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 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 invention according to the specific circumstances.

[0110] In this invention, unless otherwise explicitly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature above second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" 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.

[0111] In this invention, "first direction a", "second direction b", "third direction c" and "fourth direction d" all refer to... Figure 1 and Figure 3 The markings in the text shall prevail.

[0112] The following is based on Figures 1 to 23 The nasal spray device of the present invention will be described in detail.

[0113] In this embodiment, such as Figures 1 to 6 , Figure 21 , Figure 23 The nasal spray device 100 includes a container 1, a pump assembly 2, a nose support structure 3, an oral support structure 4, a locking mechanism 5, and a stopping mechanism 6. The container 1 holds liquid. The pump assembly 2 includes a liquid delivery component 21 and a pump body 22. One end of the liquid delivery component 21 extends into the container 1, and a one-way valve 211 is provided in the liquid delivery component 21 to restrict the direction of liquid delivery. The nose support structure 3 has a nose port 31, which is inserted into the user's nostril. Liquid sprayed from the pump assembly 2 passes through the nose port 31 and enters the nasal cavity. The oral support structure 4 has an air outlet 41, forming an airflow channel between the air outlet 41 and the nose port 31. The locking mechanism 5 includes a locking element 51 for closing or opening the airflow channel, and the stopping mechanism 6 includes a stopping element 61 that is linked to the locking element 51.

[0114] When liquid suction is triggered, the infusion unit 21 moves along the first direction a to draw liquid from the container 1 and deliver the liquid to the chamber of the pump body 22 for temporary storage. Figure 1 and Figure 2 As shown, when the aspiration is completed, the locking element 61 directly or indirectly locks the infusion unit 21 to prevent the infusion unit 21 from moving along the second direction b and triggering the spray. The first direction a is opposite to the second direction b.

[0115] When the nasal spray device 100 is in a non-spraying state, the locking element 51 is in a closed position to close the airflow channel and prevent external gas from flowing through the airflow channel to the nasal inlet 31 and causing contamination.

[0116] like Figure 3 and Figure 4 As shown, when the pressure of the airflow blown in through the air inlet 41 exceeds a preset value, the airflow can drive the locking element 51 to move to the open position, thereby opening the airflow channel. In this way, the blown airflow flows through the airflow channel to the nose inlet 31. Simultaneously, the movement of the locking element 51 can trigger the movement of the locking element 61 to release the lock. Thus, the infusion unit 21 moves along the second direction b under external force, triggering the injection. Figure 2 The middle arrow B indicates the sprayed droplets. The airflow blown in from the air inlet 41 flows toward the nose port 31. The airflow and the droplets sprayed from the pump assembly 2 merge at the outlet of the pump assembly 2. The airflow provides auxiliary power for the liquid sprayed from the pump assembly 2.

[0117] By adopting the above technical solution, the nasal spray device 100 adds a mouth-holding structure 4, a locking mechanism 5, and a stopping mechanism 6, and links the locking mechanism 5 and the stopping mechanism 6. After the nasal spray device 100 absorbs liquid, the operator blows air to trigger the locking element 51 of the locking mechanism 5 to move and open the airflow channel. At the same time, the movement of the locking element 51 of the locking mechanism 5 can trigger the stopping element 61 to unlock and trigger the spray. Compared with the existing technology of manually pressing the nasal spray pump, this solution triggers the opening of the airflow channel and the pump assembly 2 to spray by blowing air. On the one hand, it can avoid the difference in atomization effect caused by individual differences in pressing pressure. On the other hand, it eliminates the need for manual pressing operation, making the operation more convenient. In addition, the pump assembly 2 and the airflow blown in from the blowing port 41 form two power sources. The assistance of the airflow is conducive to the transport and deposition of fine-diameter droplets in the nasal cavity, and the deposition position of fine-diameter droplets in the nasal cavity is deeper and farther. Furthermore, during the blowing process, the air pressure inside 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, preventing the droplets from entering the bronchi or even the lungs through the oral cavity.

[0118] It should be understood that, in order to ensure the hygiene of the device, when the nasal spray device 100 is not in use, the nasal inlet 31 and the air outlet 41 can be covered by two sealing end caps respectively.

[0119] It should be understood that, such as Figure 1 and Figure 2 As shown, when the nasal spray device 100 is in its initial state, the locking element 51 is in the closed position and the locking element 61 is in the locked position. At this time, the pump assembly 2 is in a state where liquid suction is complete but no spraying has occurred. The closed position is the initial position of the locking element 51, and the locked position is the initial position of the locking element 61.

[0120] In one implementation, such as Figure 21 and Figure 22 As shown, the pump body 22 includes a nozzle assembly 221, which includes a chip nozzle 2211. The chip nozzle 2211 is configured to eject particles with a particle size distribution D. 50 Specifically, droplets <10μm are ejected by limiting the orifice diameter of the chip nozzle 2211 to produce droplets with the desired particle size distribution, and the transport and deposition of small-diameter particles within the nasal cavity are enhanced with the assistance of the blown-in airflow. For example... Figure 1 and Figure 21 As shown, the pump body 22 includes a support body 222, which has a delivery channel 2221. One end of the infusion component 21 is inserted into the delivery channel 2221, and one end of the delivery channel 2221 is connected to the chip nozzle 2211 with a filter element 223 between them. As the infusion component 21 moves along the first direction a, the available space in the delivery channel 2221 increases, and liquid enters the delivery channel 2221 through the infusion component 21, thus achieving liquid extraction.

[0121] In one implementation, such as Figure 1 , Figure 3 and Figure 5 As shown, the locking element 51 closes or opens the airflow channel by closing or opening the channel in the mouth-bearing structure 4, which helps to shorten the distance between the locking element 51 and the air-blowing port 41 and reduce the difficulty of the user blowing air to trigger the airflow.

[0122] In one implementation, such as Figure 1 , Figure 18 and Figure 19 As shown, the nasal spray device 100 also includes a retainer 71, an actuator 72, and a third elastic member 73. The retainer 71 is connected to the infusion unit 21 and is movably connected to the actuator 72. The third elastic member 73 is located in the actuator 72 and sleeved on the outer periphery of the container 1. One end of the third elastic member 73 abuts against the limiting surface 714 of the retainer 71 along the second direction b, and the third elastic member 73 abuts against a boss 723 provided on the inner wall of the retainer 71. The actuator 72 is sleeved on the outer periphery of the retainer 71. The inner wall of the actuator 72 is provided with a guide protrusion 722 extending along the first direction a, and the outer wall of the retainer 71 is provided with a guide groove 711 extending along the first direction a. The guide protrusion 722 is movably inserted into the guide groove 711. When the actuator 72 rotates under external force, the retaining member 71 rotates along with it. Simultaneously, with the cooperation of the guide protrusion 722 and the guide groove 711, the retaining member 71 drives the infusion member 21 to move along the first direction a, so that the infusion member 21 draws liquid from the container 1, and the third elastic member 73 is compressed. Figure 1 and Figure 2 As shown, when the aspiration is complete, the retaining member 71 abuts against the locking element 61 along the second direction b and is locked, thereby preventing the infusion unit 21 from moving along the second direction b. Figure 3and Figure 4 As shown, when the locking element 61 releases the lock on the retainer 71, the third elastic element 73 rebounds, causing the retainer 71 to move the infusion unit 21 along the second direction b to trigger the spray. The movement of the infusion unit 21 along the second direction b is powered by the third elastic element 73 to ensure that the nasal spray device 100 has a consistent spray volume, unaffected by the operator's manual force.

[0123] In one implementation, such as Figure 1 As shown, the nasal spray device 100 includes a first housing 91 and a second housing 92, both of which are cylindrical. The pump body 22 of the pump assembly 2 passes through the first housing 91. The second housing 92 surrounds the first housing 91, forming a first channel 93 between them. The first channel 93 is part of the airflow channel structure. One end of the actuator 72 extends into the first housing 91, and the actuator 72 is rotatably connected to the inner wall of the first housing 91. Figure 14 and Figure 15 As shown, the first housing 91 is provided with a first limiting structure 913, and the second housing 92 is provided with a second limiting structure 923; one of the first limiting structure 913 and the second limiting structure 923 is a slot extending along the first direction a, and the other is a protruding rib; the first limiting structure 913 and the second limiting structure 923 cooperate to restrict relative rotation between the first housing 91 and the second housing 92. The nose support structure 3 and / or the mouth support structure 4 are detachably installed on the second housing 92 for removal for cleaning, maintenance, or replacement. Figure 1 and Figure 15 As shown, the first housing 91 has a protruding skirt 917 on the side away from the nose support structure 3. The skirt 917 abuts against the inner wall of the second housing 92 and the two are sealed by an interference fit.

[0124] like Figure 17 and Figure 18 As shown, the first housing 91 is provided with a first guide slope 914, and the retainer 71 is provided with a second guide slope 712. When the actuator 72 rotates to trigger liquid aspiration, the first guide slope 914 and the second guide slope 712 cooperate, so that the retainer 71 can move along the first direction a while rotating with the actuator 72. When liquid aspiration is completed, the retainer 71 abuts against the locking element 61 along the second direction b and is locked. Furthermore, in order to improve the stability of guidance, there are two first guide slopes 914 and two second guide slopes 712, and the first guide slopes 914 and the second guide slopes 712 are matched one-to-one.

[0125] In one embodiment, the retainer 71 and the container 1 are sequentially distributed along a first direction a, and the open end of the container 1 is detachably connected to the retainer 71, so that the retainer 71, the container 1, and the infusion fitting 21 move synchronously. Specifically, as shown... Figure 1 and Figure 18 As shown, the retainer 71 has a plurality of grippers 715 at one end facing the container 1, and the container 1 is detachably connected by the grippers 715.

[0126] In one implementation, such as Figure 1 and Figure 23 As shown, the nasal spray device 100 also includes a third housing 94, which is sleeved on the outside of and connected to the actuator 72. The operator rotates the third housing 94 to drive the actuator 72 to rotate. Furthermore, the third housing 94 is detachable, so the operator can remove the third housing 94 and remove the container 1 to replenish the liquid or replace the container 1.

[0127] In one implementation, such as Figures 1 to 4 As shown, when the locking element 51 moves to the open position along the third direction c, it can trigger the locking element 61 to move along the fourth direction d to release the lock. The third direction c is opposite to the fourth direction d. Further, the first direction a is perpendicular to the third direction c. In one specific embodiment, the first direction a is downward, the second direction b is upward, and the third direction c and the fourth direction d are two opposite directions in the left-right direction. The infusion unit 21 moves linearly in the up-down direction, and the locking element 51 and the locking element 61 move linearly in the left-right direction.

[0128] In one implementation, such as Figures 1 to 5 As shown, the inlet-receiving structure 4 includes an inlet channel 42 and a partition 43 arranged sequentially along the airflow direction. The partition 43 has a first through hole 431. A locking element 51 is located on the side of the partition 43 opposite to the inlet channel 42. The locking element 51 includes a first end 511. When the locking element 51 is in the closed position, the first end 511 abuts against the partition 43 and closes the first through hole 431 to seal the airflow channel. When the pressure of the airflow blown in from the air outlet 41 is greater than a preset value, the airflow pushes the locking element 51 to move and disengage from the first through hole 431 to open the airflow channel.

[0129] Furthermore, the first end 511 is a reversibly deformable elastic structure. When the first end 511 comes into contact with the partition 43, the first end 511 deforms due to the compression of the partition 43 to ensure sealing.

[0130] Furthermore, such as Figure 2 As shown, the locking mechanism 5 includes a first elastic element 52. When the nasal spray device 100 is in a non-spraying state, the first elastic element 52 presses against the locking element 51 to close the first through hole 431 at the first end 511. Figure 4As shown, when the pressure of the airflow blown in from the air outlet 41 is greater than the elastic force of the first elastic element 52, the locking element 51 moves and compresses the first elastic element 52. The first elastic element 52 stores energy due to compression, which provides power for the locking element 51 to reset.

[0131] In one embodiment, when the locking element 51 is in the open position and the locking element 61 is in the unlocked position, the locking element 61 can prevent the locking element 51 from resetting to the closed position, so that the locking element 51 is stably in the normally open state. The pressure of the airflow blown in by the operator from the blowing port 41 no longer needs to meet the condition of being greater than a preset value, which can reduce the amount of exhaled air and the exhaled air pressure required by the operator. Exhalation only needs to assist in droplet transport and deposition, making it easier to use. When liquid aspiration is triggered, the locking element 61 moves to its reset position, and the reset movement of the locking element 61 can trigger the locking element 51 to reset. In this solution, the opening and closing of the locking mechanism 5 is linked to the pump assembly 2. When the locking mechanism 5 is open, the pump assembly 2 starts spraying; when the pump assembly 2 starts aspiration, the locking mechanism 5 closes.

[0132] In one implementation, such as Figures 1 to 4 , Figure 9 , Figure 10 As shown, the nasal spray device 100 includes a linkage element 8, and the first end 81 of the linkage element 8 is connected to the locking element 61. Figure 2 As shown, when the locking element 51 is in the closed position, the second end 82 of the linkage element 8 is restricted by the locking element 51, so that the linkage element 8 restricts the locking element 61 to the locked position. Figure 4 As shown, when the locking element 51 moves toward the open position, the locking element 51 releases its restriction on the linkage element 8, thereby allowing the linkage element 8 to release its restriction on the locking element 61. The locking element 61 can then move to the unlocked position, releasing its lock on the retaining member 71. In this solution, the locking element 51 and the locking element 61 are linked by the linkage element 8, enabling the user to trigger the opening of the airflow channel and trigger the jet by blowing air. Furthermore, during the process of the locking element 61 relocking, the locking element 51 can be triggered to reclose the airflow channel.

[0133] In one implementation, such as Figure 2 and Figure 4 As shown, when the locking element 51 moves to the open position, the linkage element 8 restricts the locking element 51 to reset. At this time, the locking element 51 is stably in the normally open state.

[0134] In one implementation, such as Figures 1 to 4 , Figure 7As shown, the locking element 51, the linkage element 8 and the locking element 61 are distributed sequentially along the third direction c. The first end 81 of the linkage element 8 is rotatably connected to the locking element 61. The locking element 51 includes an extension arm 512, which is connected to the first end 511. The locking element 51 can be a one-piece structure or an assembly structure formed by multiple parts.

[0135] The extension arm 512 is provided with a clearance hole 5121, which can be a through hole or a blind hole. For example... Figure 2 and Figure 9 As shown, when the locking element 51 is in the closed position, the second end 82 of the linkage element 8 abuts against the surface wall of the extension arm 512 and is restricted, so that the second end 82 of the linkage element 8 can restrict the movement of the locking element 61 from the locked position to the unlocked position, that is, restrict the movement of the locking element 61 along the fourth direction d. At this time, the clearance hole 5121 is located on the side of the linkage element 8 opposite to the locking element 61. Figure 4 and Figure 9 As shown, when the locking element 51 moves toward the open position, that is, the locking element 51 moves along the third direction c, the positioning hole 5121 moves so that the second end 82 can be inserted, so that the linkage element 8 can rotate, thereby contacting the second end 82 of the linkage element 8 to restrict the locking element 61. Under external force, the locking element 61 can move from the locked position to the unlocked position to release its restriction on the retaining member 71.

[0136] Furthermore, such as Figure 3 and Figure 4 As shown, when the locking element 51 moves to the open position, the second end 82 of the linkage element 8 extends into the relief hole 5121 and can lock the extension arm 512 to limit the locking element 51 from resetting, thereby making the locking element 51 stably in the normally open state, which can reduce the amount of exhalation and exhalation pressure required by the operator.

[0137] Furthermore, such as Figure 2 and Figure 4 As shown, when the locking element 61 moves from the unlocked position to the locked position under external force, the linkage element 8 rotates, and the second end 82 of the linkage element 8 disengages from the relief hole 5121, releasing the restriction of the extension arm 512 of the locking element 51. Thus, the locking element 51 can be reset to the closed position under external force (the rebound force of the first elastic element 52). Figure 2 As shown, when the locking element 51 is reset to the closed position, the second end 82 of the linkage element 8 is once again restricted by the surface wall of the extension arm 512 and cannot rotate, so that the linkage element 8 restricts the locking element 61 to the locked position.

[0138] In one implementation, such as Figure 2As shown, when the locking element 51 is in the closed position, the extension arm 512 can be positioned above the linkage element 8, thus, as Figure 4 As shown, when the locking element 51 moves toward the open position until the clearance hole 5121 and the second end 82 of the linkage element 8 are vertically aligned, the locking element 61 moves along the fourth direction d and pushes the first end 81 of the linkage element 8, causing the linkage element 8 to rotate and the second end 82 to extend upward into the clearance hole 5121. Alternatively, when the locking element 51 is in the closed position, the extension arm 512 can also be located below the linkage element 8. In this case, during the movement of the locking element 61 along the fourth direction d, the linkage element 8 rotates in the opposite direction and the second end 82 extends downward into the clearance hole 5121.

[0139] In one implementation, such as Figure 2 and Figure 15 As shown, the first housing 91 includes a first limiting arm 911, which abuts against the extension arm 512, forming an angle between the first limiting arm 911 and the extension arm 512. Figure 2 As shown, when the locking element 51 is in the closed position, the second end 82 of the linkage element 8 is engaged with the angle structure. The first limiting arm 911 cooperates with the extension arm 512 to restrict the rotation of the linkage element 8. There is no need to set up an additional structure to restrict the linkage element 8, nor is it necessary to modify the structure of the first limiting arm 911 or the extension arm 512.

[0140] Furthermore, such as Figure 9 and Figure 10 As shown, the second end 82 includes a planar first abutment surface 821 and an arc-shaped second abutment surface 822, as... Figure 2 As shown, when the locking element 51 is in the closed position, the first abutting surface 821 abuts against the first limiting arm 911 with their surfaces in contact, and the second abutting surface 822 abuts against the extension arm 512 with their points in contact. Figure 4 As shown, when the locking element 51 moves from the closed position to the open position, the friction between the second abutment surface 822 and the extension arm 512 is reduced because the second abutment surface 822 and the extension arm 512 are in point-to-surface contact. Furthermore, as... Figure 9 and Figure 10 As shown, the linkage element 8 also includes a first sidewall 83 and a second sidewall 84. The first sidewall 83, the second abutment surface 822, the first abutment surface 821 and the second sidewall 84 are connected in sequence. The angle between the first sidewall 83 and the first abutment surface 821 is an acute angle, and the angle between the second sidewall 84 and the first abutment surface 821 is an obtuse angle.

[0141] In one implementation, such as Figure 2 , Figure 8 and Figure 15As shown, the first limiting arm 911 has a first mounting post 912 on the side facing away from the linkage element 8. The locking element 51 includes a limiting groove 513. The locking mechanism 5 includes a first elastic member 52. One end of the first elastic member 52 is sleeved on the first mounting post 912, and the other end is inserted into the limiting groove 513 to assemble the first elastic member 52.

[0142] In one implementation, such as Figure 2 , Figure 4 , Figure 5 , Figure 13 and Figure 14 As shown, the second housing 92 has a second through hole 921 and a third through hole 922 on one side. The mouth-bearing structure 4 also includes a sealing sleeve 44 and a second channel 45. Both the sealing sleeve 44 and the second channel 45 are located on the side of the partition 43 facing away from the inlet channel 42. The sealing sleeve 44 abuts against the outer wall of the second housing 92. The sealing sleeve 44 communicates with the second through hole 921 and together form an installation channel. The locking element 51 is movably installed in the installation channel. The outlet of the second channel 45 communicates with the third through hole 922, such as... Figure 4 As shown, when the locking element 51 is in the open position, the inlet channel 42, the first through hole 431, the second channel 45, the third through hole 922, and the first channel 93 are connected in sequence to form an airflow channel. Figure 2 As shown, when the locking element 51 is in the closed position, the airflow passage is closed at the first through hole 431 because the first end 511 of the locking element 51 closes the first through hole 431.

[0143] Furthermore, such as Figure 4 , Figure 14 and Figure 15 As shown, the first housing 91 is provided with an annular mounting portion 915, which is snapped into the second through hole 921. The ends of the sealing sleeve 44 of the bearing structure 4 and the annular mounting portion 915 abut against each other. The hollow area of ​​the sealing sleeve 44 communicates with the hollow area of ​​the annular mounting portion 915, forming a cylinder liner for accommodating the locking element 51. The locking element 51 can move like a piston in the cylinder liner.

[0144] Furthermore, such as Figure 2 , Figure 15 and Figure 16As shown, the first limiting arm 911 and the first mounting post 912 are both located in the annular mounting portion 915. One end face of the first limiting arm 911 forms a limiting through hole 916 with the inner wall of the annular mounting portion 915. The extension arm 512 of the locking element 51 is movably inserted into the limiting through hole 916. Furthermore, the cross-sectional shape of the extension arm 512 is adapted to the hole wall of the limiting through hole 916. The cross-sectional shape of the extension arm 512 includes, but is not limited to, a rectangle, a triangle, or an irregular shape. The limiting through hole restricts the extension arm 512 to move only in the third direction c or in the fourth direction d. In addition, as Figure 2 As shown, when the locking mechanism 5 is assembled between the mouth support structure 4 and the first housing 91, the first limiting arm 911 abuts against the extension arm 512 to separate the space inside the first housing 91 from the space outside the first limiting arm 911.

[0145] In one implementation, such as Figure 4 and Figure 13 As shown, the outer wall of the second housing 92 is provided with a snap-fit ​​ring 924, which surrounds the second through hole 921 and the third through hole 922. One end of the mouth-bearing structure 4 forms an air-blowing port 41, and the other end is snapped into the snap-fit ​​ring 924, and the two are sealed by an interference fit.

[0146] In one implementation, such as Figure 1 , Figure 2 , Figure 9 and Figure 11 As shown, the locking element 61 includes an annular body 611 and a first mounting portion 612. The pump assembly 2 passes through the annular body 611, and the first mounting portion 612 is connected to one radial side of the annular body 611. The first end 81 is rotatably connected to the first mounting portion 612. The first mounting portion 612 can be a shaft hole or a pivot shaft. In one specific embodiment, the first end 81 is provided with two pivot shafts 811, and the first mounting portion 612 is an open annular shape. The pivot shafts 811 and the first mounting portion 612 are rotatably connected through the cooperation of the shaft and the shaft hole.

[0147] Furthermore, such as Figure 11 As shown, the locking element 61 includes a second mounting post 613, and the first mounting portion 612 and the second mounting post 613 are respectively connected to the radial sides of the annular body 611. Figure 3 As shown, the locking mechanism 6 also includes a second elastic member 62, one end of which is sleeved on the second mounting post 613, and the other end is inserted into a spring seat 925 provided on the inner wall of the second housing 92. Figure 1 and Figure 2As shown, when the locking element 51 is in the closed position, the locking element 61 is in the locked position. The locking element 61 presses against the second elastic member 62 along the third direction c, so that the second elastic member 62 is in an energy-storing state. At this time, the locking element 61 is biased relative to the retaining member 71, and the retaining member 71 abuts against the locking element 61 along the second direction b. Figure 3 and Figure 4 As shown, when the locking element 51 releases the restriction on the linkage element 8, the second elastic element 62 rebounds to push the locking element 61 to move along the fourth direction d, and the first mounting part 612 forces the linkage element 8 to rotate and causes the second end 82 to extend into the relief hole 5121.

[0148] Furthermore, such as Figure 1 , Figure 14 and Figure 16 As shown, the outer wall of the first housing 91 is provided with an annular support portion 9191, and the spring seat 925 is inserted into the annular support portion 9191. The inner side wall of the spring seat 925 is provided with a sealing ring 9251. The sealing ring 9251 is used to seal the assembly gap between the spring seat 925 and the annular support portion 9191 to achieve a sealed connection, so as to prevent the airflow in the airflow channel from leaking outward through the assembly gap between the two.

[0149] In one embodiment, when the actuator 72 rotates to trigger liquid aspiration, the actuator 72 can drive the locking element 61 to reset to the locked position. Furthermore, the locking element 61, through this reset movement, can release the restriction of the linkage element 8 on the locking element 51, allowing the locking element 51 to move and reset along the fourth direction d under the rebound of the first elastic element 52. In this solution, as... Figure 4 As shown, when the operator blows air through the mouthpiece structure 4 to move the locking element 51 to the open position, the second end 82 of the linkage element 8 is inserted into the clearance hole 5121 of the locking element 51, thus keeping the locking element 51 in the normally open state. Only when the pump assembly 2 completes the liquid suction and rotates the actuator 72 to trigger the liquid suction, the locking element 51 can be reset to the closed position.

[0150] Furthermore, such as Figure 11 and Figure 19 As shown, the actuator 72 has a first protrusion 721, and the first protrusion 721 has a first guide surface 7211; the locking element 61 has a second protrusion 614, and the second protrusion 614 has a second guide surface 6141. When the actuator 72 rotates to trigger liquid aspiration, the first guide surface 7211 and the second guide surface 6141 engage face-to-face, and the first guide surface 7211 pushes the second guide surface 6141 to drive the locking element 61 to reset. The first protrusion 721 can pass over the second protrusion 614 to prevent the first protrusion 721 from interfering with the actuator 72's continued rotation.

[0151] Furthermore, such as Figure 11 and Figure 19 As shown, the first guide surface 7211 and the second guide surface 6141 are mutually matched inclined structures. The first protrusion 721 is also provided with a first transition surface 7212, and the second protrusion 614 is also provided with a second transition surface 6142. When the first guide surface 7211 passes over the second guide surface 6141, the first transition surface 7212 abuts against the second transition surface 6142, and the first transition surface 7212 moves along the surface of the second transition surface 6142 until the first protrusion 721 passes over the second protrusion 614, and the actuator 72 continues to rotate.

[0152] Furthermore, such as Figure 11 As shown, the locking element 61 is provided with a first limiting rib 615. During the movement of the locking element 61, the first housing 91 restricts the movement direction of the first limiting rib 615 to guide the movement direction of the locking element 61.

[0153] In one implementation, such as Figure 2 and Figure 16 As shown, the inner wall of the first housing 91 is provided with a second limiting rib 918, and the first surface 616 of one end of the locking element 61 abuts against the second limiting rib 918 along the second direction b. Figure 1 and Figure 12 As shown, the other end of the locking element 61 is provided with a second surface 617 and a third surface 618. The third surface 618 protrudes from the second surface 617, and the second protrusion 614 protrudes from the second surface 617. The third surface 618 abuts against the end face of the actuator 72 along the first direction a. Thus, as shown... Figure 2 As shown, the second limiting rib 918 and the actuator 72 restrict the movement of the locking element 61 in the first direction a or the second direction b. Figure 2 , Figure 12 and Figure 18 As shown, when the locking element 61 is in the locked position, the second surface 617 abuts against the first end face 713 of the retainer 71 along the first direction a, thereby restricting the movement of the retainer 71 along the second direction b to trigger spraying. Furthermore, when the nasal spray device 100 completes spraying, both the first protrusion 721 and the second protrusion 614 are located within the space formed by the second surface 617 and the end face of the actuator 72. When the actuator 72 rotates to trigger liquid aspiration, the first protrusion 721 rotates along with it and applies a force to the second protrusion 614, causing the locking element 61 to reset to the locked position.

[0154] In one implementation, such as Figure 1 and Figure 14As shown, the second housing 92 is provided with a convex ring 926, and the nose support structure 3 is generally in a gradually expanding structure. The nose support opening 31 is located at the narrower end of the nose support structure 3. One end of the nose support structure 3 is sleeved on the outer periphery of the convex ring 926 and the two are sealed together. The end face of the nose support structure 3 abuts against the outer surface of the second housing 92.

[0155] In one implementation, such as Figure 1 and Figure 15 As shown, the first housing 91 is provided with a support ring 9192, and the support body 222 of the pump assembly 2 is installed on the support ring 9192.

[0156] In one implementation, such as Figure 1 and Figure 20 As shown, container 1 has a three-layer structure, consisting of an outer shell 11, an inner shell 12, and an inner liner 13 from the outside in. The outer shell 11 is made of a relatively rigid material, while the inner liner 13 is a soft bag. The upper part of container 1 is provided with an inlet 14 for the infusion fitting 21 to pass through. The outer shell 11 is provided with an air inlet 111. Gas outside container 1 can pass through the air inlet 111, then through the inner shell 12, and enter the periphery of the inner liner 13 to balance the air pressure in the inner liner 13.

[0157] 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 the present invention that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of the present invention and do not limit the scope of protection of this patent.

Claims

1. A nasal spray device, characterized in that: The nasal spray device (100) comprises: A container (1) for containing liquid; A pump assembly (2), comprising an infusion piece (21) with one end extending into the container (1); A nose support structure (3) having a nose support opening (31); A mouthpiece structure (4) provided with an air blowing port (41), wherein an air flow channel is formed between the air blowing port (41) and the nosepiece port (31); A locking mechanism (5), comprising a locking element (51) for closing or opening the airflow channel; A locking mechanism (6), comprising a locking element (61) linked to the locking element (51); When liquid aspiration is triggered, the infusion piece (21) moves along a first direction (a) to draw liquid from the container (1); when liquid aspiration is completed, the locking element (61) directly or indirectly locks the infusion piece (21) to prevent the infusion piece (21) from moving along a second direction (b) to trigger injection, wherein the first direction (a) is opposite to the second direction (b); When the nasal spray device (100) is in a non-spraying state, the locking element (51) is in a closed position to close the airflow channel; when the pressure of the airflow blown in from the blowing port (41) is greater than a preset value, the airflow pushes the locking element (51) to move to an open position to open the airflow channel, and the movement of the locking element (51) can trigger the locking element (61) to move and release the lock to trigger spraying, and the airflow blown in from the blowing port (41) flows toward the nasal opening (31) to provide auxiliary power for the liquid sprayed from the pump assembly (2).

2. The nasal spray device according to claim 1, characterized in that: The blocking element (51) closes or opens the passage in the mouthpiece structure (4) to close or open the airflow passage.

3. The nasal spray device according to claim 1, characterized in that: The nasal spray device (100) further comprises a retaining member (71), wherein the retaining member (71) is connected to the infusion member (21); When the liquid absorption is completed, the retaining member (71) abuts against the locking element (61) along the second direction (b) and is locked.

4. The nasal spray device according to claim 3, characterized in that: The locking element (51) moves along the third direction (c) to the open position, which can trigger the locking element (61) to move along the fourth direction (d) to release the lock, and the third direction (c) is opposite to the fourth direction (d).

5. The nasal spray device according to claim 4, characterized in that: The first direction (a) is perpendicular to the third direction (c).

6. The nasal spray device according to any one of claims 1 to 5, characterized in that: The mouthpiece structure (4) comprises an inlet channel (42) and a partition (43) which are sequentially distributed along the airflow direction, the partition (43) is provided with a first through hole (431), and the locking element (51) comprises a first end portion (511); The first end portion (511) abuts against the partition (43) and closes the first through hole (431) to close the air flow channel; the locking element (51) moves to disengage from the first through hole (431) to open the air flow channel.

7. The nasal spray device according to claim 6, characterized in that The locking mechanism (5) comprises a first elastic member (52); When the nasal spray device (100) is in a non-spraying state, the first elastic member (52) presses against the locking element (51) so that the first end portion (511) closes the first through hole (431); When the pressure of the air flow blown in from the air port (41) is greater than the elastic force of the first elastic member (52), the locking element (51) moves and compresses the first elastic member (52).

8. The nasal spray device according to any one of claims 1 to 5, characterized in that: When the locking element (51) is located at the open position and the locking element (61) is located at the unlocked position, the locking element (61) is capable of limiting the locking element (51) from returning to the closed position; And / or, when the liquid suction is triggered, the locking element (61) undergoes a reset movement, and the reset movement of the locking element (61) can trigger the locking element (51) to reset.

9. The nasal spray device according to any one of claims 1 to 5, characterized in that: The nasal spray device (100) comprises a linkage element (8), a first end (81) of which is connected to the locking element (61); When the locking element (51) is in the closed position, the second end (82) of the linkage element (8) is restricted by the locking element (51), so that the linkage element (8) restricts the locking element (61) to the locked position; When the locking element (51) moves toward the open position, the locking element (51) releases the restriction on the linkage element (8), so that the linkage element (8) releases the restriction on the locking element (61), and the locking element (61) can move to the unlocking position to release the lock.

10. The nasal spray device according to claim 9, characterized in that When the locking element (51) moves to the open position, the linkage element (8) restricts the locking element (51) from resetting.

11. The nasal spray device according to claim 9, characterized in that The first end (81) is rotatably connected to the locking element (61), and the locking element (51) comprises an extension arm (512), and the extension arm (512) is provided with a clearance hole (5121); When the locking element (51) is in a closed position, the second end (82) abuts against a surface wall of the extension arm (512) and is restricted; When the locking element (51) moves toward the open position, the clearance hole (5121) moves to allow the second end (82) to extend therein, so that the linkage element (8) can rotate to release the restriction on the locking element (61).

12. The nasal spray device according to claim 11, characterized in that When the locking element (51) moves to the open position, the portion of the second end (82) extending into the clearance hole (5121) can lock the extension arm (512) to limit the resetting of the locking element (51).

13. The nasal spray device according to claim 12, characterized in that When the locking element (61) moves from the unlocking position to the locking position under external force, the linkage element (8) rotates and the second end (82) disengages from the clearance hole (5121), so that the locking element (51) can be reset to the closed position under external force. At this time, the second end (82) of the linkage element (8) is restricted by the surface wall of the extension arm (512) again and cannot rotate, so that the linkage element (8) restricts the locking element (61) to the locking position.

14. The nasal spray device according to claim 11, characterized in that The nasal spray device (100) comprises a first housing (91), which comprises a first limiting arm (911); The first limiting arm (911) abuts against the extending arm (512), and the two form an angle structure; when the locking element (51) is in the closed position, the second end (82) is clamped on the angle structure to be restricted from rotating.

15. The nasal spray device according to claim 14, characterized in that The second end (82) comprises a first stop surface (821) in a planar shape and a second stop surface (822) in an arcuate shape; When the locking element (51) is in the closed position, the first stop surface (821) abuts against the first limiting arm (911) and the two are matched in surface to surface, and the second stop surface (822) abuts against the extension arm (512) and the two are matched in point to surface.

16. The nasal spray device according to claim 14, characterized in that A first mounting column (912) is provided on a side of the first limiting arm (911) facing away from the linkage element (8), and the locking element (51) includes a limiting groove (513); The locking mechanism (5) comprises a first elastic member (52), one end of the first elastic member (52) is sleeved on the first mounting column (912), and the other end is inserted into the limiting groove (513), and the first elastic member (52) is used to keep the locking element (51) in the closed position.

17. The nasal spray device according to claim 11, characterized in that The locking element (61) comprises an annular body (611) and a first mounting portion (612), the pump assembly (2) passes through the annular body (611), the first mounting portion (612) is connected to a radial side of the annular body (611), and the first end (81) is rotatably connected to the first mounting portion (612).

18. The nasal spray device according to claim 17, characterized in that The locking element (61) comprises a second mounting column (613), the first mounting portion (612) and the second mounting column (613) are respectively connected to two radial sides of the annular body (611); the locking mechanism (6) further comprises a second elastic member (62), one end of the second elastic member (62) is sleeved on the second mounting column (613); When the locking element (51) is in a closed position, the second elastic member (62) is in an energy storage state; When the locking element (51) releases the restriction on the linkage element (8), the second elastic member (62) rebounds to push the locking element (61) to move, and the first mounting portion (612) forces the linkage element (8) to rotate and causes the second end (82) to extend into the clearance hole (5121).

19. The nasal spray device according to claim 6, characterized in that The nasal spray device comprises: A first housing (91), a pump body (22) of the pump assembly (2) being connected to the first housing (91); A second shell (92) is arranged around the first shell (91) and a first passage (93) is formed therebetween, and a second through hole (921) and a third through hole (922) are provided on one side of the second shell (92); Wherein, the mouth bearing structure (4) further comprises a sealing sleeve (44) and a second channel (45), and the sealing sleeve (44) and the second channel (45) are both located on a side of the partition (43) facing away from the inlet channel (42); The sealing sleeve (44) abuts against the outer wall of the second shell (92), and is communicated with the second through hole (921) to form a mounting channel together, and the locking element (51) is movably mounted on the mounting channel; the outlet of the second channel (45) is communicated with the third through hole (922); When the locking element (51) is in the open position, the inlet channel (42), the first through hole (431), the second channel (45), the third through hole (922) and the first channel (93) are connected in sequence to form the airflow channel.

20. The nasal spray device according to claim 19, characterized in that The first shell (91) is provided with a first limiting structure (913), and the second shell (92) is provided with a second limiting structure (923); One of the first limiting structure (913) and the second limiting structure (923) is a slot extending along the first direction (a), and the other is a convex rib; the first limiting structure (913) and the second limiting structure (923) cooperate to limit relative rotation between the first shell (91) and the second shell (92).

21. The nasal spray device according to any one of claims 1 to 5, characterized in that: The nasal spray device (100) comprises a second shell (92) which is used to form a partial outer contour structure of the nasal spray device (100); the nose support structure (3) and / or the mouth support structure (4) are detachably mounted on the second shell (92).

22. The nasal spray device according to claim 10, characterized in that The nasal spray device (100) further comprises: A retaining member (71), wherein the retaining member (71) is connected to the infusion member (21); an actuating member (72), the retaining member (71) being movably connected to the actuating member (72); a third elastic member (73), one end of which abuts against the retaining member (71) along the second direction (b); Wherein, when the actuating member (72) rotates under an external force, the retaining member (71) rotates together with the actuating member (72) and can drive the infusion member (21) to move along the first direction (a), and the third elastic member (73) is compressed; When the locking element (61) releases the lock on the retaining member (71), the third elastic member (73) rebounds, so that the retaining member (71) drives the infusion member (21) to move along the second direction (b).

23. The nasal spray device according to claim 22, characterized in that When the actuating member (72) rotates, the actuating member (72) can drive the locking element (61) to return to the locking position.

24. The nasal spray device according to claim 23, characterized in that The actuating member (72) is provided with a first protrusion (721), and the first protrusion (721) is provided with a first guide surface (7211); the locking element (61) is provided with a second protrusion (614), and the second protrusion (614) is provided with a second guide surface (6141); When the actuating member (72) rotates to trigger liquid suction, the first guide surface (7211) cooperates with the second guide surface (6141) to drive the locking element (61) to reset, and the first protrusion (721) can pass over the second protrusion (614).

25. The nasal spray device according to any one of claims 1 to 5, characterized in that The pump assembly (2) further comprises a pump body (22), which comprises a chip nozzle (2211), wherein the chip nozzle (2211) is configured to spray particles having a particle size distribution D 50 Droplet particles <10μm.

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