Spraying device

Abstract

The utility model relates to a spraying device which comprises an outer shell, an inner shell, a nozzle assembly, a blowing nozzle and a nose pad. The blowing nozzle is used for blowing air to the air passage by a user; the nose pad is used for a user to inhale the medicament; the air channel is directly formed between the inner shell and the wall face of the outer shell, the structure is simple, and the nose support and the blowing nozzle can be effectively communicated. Therefore, when a user inhales medicament by using the nose pad, the user can hold the blowing nozzle to blow, on one hand, along with the increase of air pressure in the nasal cavity, the soft palate is closed, the nasal cavity and the oral cavity are separated, and small particles are prevented from entering the lung of the user; on the other hand, fog drops and clouds sprayed out of the nose pad can enter deeper areas of the nasal cavity under the driving of airflow generated by blowing, and the effectiveness of medicine taking is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a spray device. BACKGROUND

[0002] Nasal administration is different from oral and parenteral administration, and is usually used to treat nasal diseases or relieve migraine symptoms. Since nasal administration does not need to pass through the gastrointestinal tract, the first-pass effect of oral drugs can be avoided, and the drugs can directly enter the blood circulation system, thereby improving the absorption and bioavailability of the drugs. The liquid spray can directly contact the nasal mucosa, providing more efficient treatment.

[0003] According to the guidelines for nasal spray products issued by the U.S. Food and Drug Administration (FDA) in 2002, the particle size of most nasal spray particles is required to be greater than 10 μm to ensure that most particles are deposited in the nasal cavity and do not enter the trachea and lungs through the pharynx.

[0004] Traditional nasal spray devices are driven by manual pressing to drive the nasal spray pump to move, thereby pushing the liquid medicine out of the nozzle to form droplets. This method has many disadvantages, for example, different patients have different pressing forces, which will inevitably affect the characteristics of the nasal spray pump movement, thereby affecting the state of the droplet outlet, and further affecting the deposition state of the droplets in the nasal cavity. The particle size distribution D 50 of the nasal spray particles driven by manual pressing is basically above 20 μm, and particles with such a particle size can only be deposited in a straight line impact manner along the direction of the particle outlet. Due to the complex structure of the nasal cavity, the straight line impact particles can basically only be deposited in the anterior nasal vestibule region or the front end of the concha region.

[0005] Particles with a particle size below 10 μm are more likely to be deposited in the deep part of the nasal cavity, but increase the risk of being absorbed by the lungs. There is a lack of a spray device that can both increase the deposition in the deep part of the nasal cavity and avoid small particles entering the lungs in the prior art, or the structure of some spray devices is complex to achieve the above functions. CONTENT OF THE UTILITY MODEL

[0006] Therefore, the embodiments of the present application provide a spray device to solve at least one problem in the background art.

[0007] The embodiments of the present application provide a spray device, which comprises:

[0008] A shell assembly, the shell assembly comprises an outer shell and an inner shell, the inner shell is mounted in the outer shell, and an air passage is formed between the outer wall of the inner shell and the inner wall of the outer shell.

[0009] a nozzle assembly installed in the inner housing for spraying the atomized medicament; a spray end of the nozzle assembly is exposed to the inner housing, and the spray end is located at the air outlet of the air passage;

[0010] a blowing nozzle communicating with the air inlet of the air passage, the blowing nozzle being used by the user to blow air into the air passage;

[0011] a nose pad communicating with the air outlet of the air passage, the nose pad being used to be inserted into the user's nasal cavity for the user to inhale the atomized medicament;

[0012] When the user blows air into the blowing nozzle, air flow in the air passage accelerates the atomized medicament sprayed by the nozzle assembly to enter the user's nasal cavity through the nose pad.

[0013] In an optional embodiment, the outer housing has a mounting opening at one end; the inner housing can be mounted into the outer housing through the mounting opening.

[0014] In an optional embodiment, the inner housing has a sealing skirt radially protruding at one end of the mounting opening, and the sealing skirt seals the mounting opening.

[0015] In an optional embodiment, the outer housing has a convex ring arranged around the position of the air outlet of the air passage, and one end of the nose pad is detachably sleeved or embedded in the convex ring.

[0016] In an optional embodiment, the outer housing has an air passage interface protruding around the position of the air inlet of the air passage, and one end of the blowing nozzle is detachably sleeved or embedded in the air passage interface.

[0017] In an optional embodiment, the outer wall of the inner housing has a limiting rib, and the outer side of the limiting rib abuts against the inner wall of the outer housing.

[0018] In an optional embodiment, the inner wall of the outer housing has a plurality of limiting grooves, and the limiting rib is arranged corresponding to the limiting grooves, and the limiting rib is clamped into the corresponding limiting groove.

[0019] In an optional embodiment, the spray device further comprises a spray trigger mechanism for triggering the nozzle assembly to spray the medicament, and the spray trigger mechanism comprises a trigger element and a delivery assembly; by operating the trigger element, the delivery assembly can deliver the medicament to the nozzle assembly, and the nozzle assembly sprays the atomized medicament.

[0020] In an optional embodiment, the side wall of the inner housing has a trigger opening, the side wall of the inner housing protrudes a sealing stop ring at a position surrounding the trigger opening, the outer side of the sealing stop ring abuts against the inner wall of the outer housing, the side wall of the outer housing has a trigger channel aligned with the sealing stop ring, and the trigger element is arranged in the trigger channel and the sealing stop ring.

[0021] In an optional embodiment, the spray device further comprises a blocking member; the blocking member is fixed with the trigger element and can be switched from a position blocking the delivery assembly to a position avoiding the delivery assembly under the driving of the trigger element; when the blocking member blocks the delivery assembly, the delivery assembly is limited in position; when the blocking member avoids the delivery assembly, the delivery assembly can be moved.

[0022] In an optional embodiment, the nozzle assembly comprises a chip nozzle, the chip nozzle has a slit-shaped liquid channel therein, the liquid channel comprises two sub-channels at the liquid outlet thereof, and the two sub-channels are at an included angle.

[0023] In an optional embodiment, along the liquid ejection direction of the sub-channels, the sub-channels successively comprise a surge segment and a translation segment, wherein the channel cross-sectional area of the surge segment is smoothly reduced, and the channel cross-sectional area of the translation segment remains unchanged.

[0024] In an optional embodiment, the two sub-channels are at an included angle of 75°-105°.

[0025] The spray device provided by the embodiments of the present application has the following advantages: the nozzle is used by the user to blow air; the nose pad is used by the user to inhale the medicament; the airway is directly formed between the inner housing and the outer housing wall, which is simple in structure and can effectively connect the nose pad and the nozzle. Therefore, when the user inhales the medicament by using the nose pad, the nozzle can be held to blow air, on one hand, with the increase of air pressure in the nasal cavity, the soft palate is closed to separate the nasal cavity and the oral cavity, so as to avoid small particles from entering the lungs of the user; on the other hand, the cloud of mist droplets sprayed at the nose pad can enter the deeper area of the nasal cavity under the driving of the airflow generated by blowing, thereby improving the effectiveness of taking medicine.

[0026] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0028] Figure 1A cross-sectional structure diagram of a spray device provided for an embodiment of the present application;

[0029] Figure 2 A shell structure diagram provided for an embodiment of the present application; Figure 2 In the figure, (a) is a front view of the shell structure, (b) is a cross-sectional view of the shell structure, (c) is a bottom view of the shell structure, (d) is a perspective view of the shell structure from a first angle, and (e) is a perspective view of the shell structure from a second angle;

[0030] Figure 3 An inner shell structure diagram provided for an embodiment of the present application; Figure 3 In the figure, (a) is a front view of the inner shell structure, (b) is a cross-sectional view of the inner shell structure, (c) is a partial cross-sectional view of the inner shell structure, (d) is a bottom view of the inner shell structure, and (e) is a perspective view of the inner shell structure;

[0031] Figure 4 A nose pad structure diagram provided for an embodiment of the present application; Figure 4 In the figure, (a) is a cross-sectional view of the nose pad structure, and (b) is a perspective view of the nose pad structure;

[0032] Figure 5 A nozzle structure diagram provided for an embodiment of the present application; Figure 5 In the figure, (a) is a front view of the nozzle structure, (b) is a cross-sectional view of the nose pad structure, and (c) is a perspective view of the nose pad structure;

[0033] Figure 6 A nozzle assembly structure diagram provided for an embodiment of the present application; Figure 6 In the figure, (a) is a perspective view of the nozzle assembly structure, (b) is a front view of the nozzle assembly structure, (c) is a cross-sectional view of the nozzle assembly structure, and (d) is a chip nozzle structure diagram of the nozzle assembly;

[0034] Figure 7 A delivery assembly structure diagram provided for an embodiment of the present application; Figure 7 In the figure, (a) is a cross-sectional view of the delivery assembly structure, and (b) is a perspective view of the delivery assembly structure;

[0035] Figure 8 A driven sleeve structure diagram provided for an embodiment of the present application;

[0036] Figure 9 A blocking piece structure diagram provided for an embodiment of the present application; Figure 9 In the figure, (a) is a lower end structure diagram of the blocking piece, (b) is a perspective view of the blocking piece structure, (c) is a front view of the blocking piece structure, and (d) is a cross-sectional view of the blocking piece structure;

[0037] Figure 10 A trigger element structure diagram provided for an embodiment of the present application;Figure 10 In the figure, (a) is a front view of the trigger element structure, (b) is a back view of the trigger element structure, (c) is a top view of the trigger element structure, (d) is a sectional view of the trigger element structure, and (e) is a perspective view of the trigger element structure.

[0038] Figure 11 A schematic diagram of the liquid storage tank structure provided by the embodiment of the present application is shown in the figure. Figure 11 In the figure, (a) is a perspective view of the liquid storage tank structure, and (b) is a sectional view of the liquid storage tank structure.

[0039] The reference signs in the figure are as follows:

[0040] 01, outer shell; 011, convex ring; 012, limiting groove; 013, abutting surface; 014, airway interface; 015, trigger channel;

[0041] 02, inner shell; 021, sealing stop ring; 022, limiting rib; 023, nozzle fixing hole; 024, sealing stop skirt; 025, support body; 026, guide slope;

[0042] 03, nozzle assembly; 031, nozzle support; 032, delivery channel; 033, chip nozzle; 034, nozzle filter element; 035, liquid channel; 0331, liquid outlet; 0332, translation section; 0333, surge section;

[0043] 04, blocking piece; 041, clamping hole; 042, guide piece; 043, guide clamping groove; 044, extrusion receiving part; 045, support surface; 046, blocking surface; 047, fourth end surface; 0441, offset section; 0442, non-offset section;

[0044] 05, blowing nozzle; 051, blowing nozzle air inlet end; 052, second abutting surface;

[0045] 06, trigger element; 061, pressing surface; 062, non-contact surface; 063, clamping column;

[0046] 07, drive spring;

[0047] 08, driven outer sleeve; 081, protrusion; 082, third end surface; 083, guide block; 0811, extrusion surface; 0812, transition surface;

[0048] 09, liquid storage tank; 091, outer sleeve shell; 092, inner sleeve shell; 093, inner liner bag; 094, infusion inlet; 095, air inlet hole;

[0049] 10, delivery assembly; 101, delivery seat; 102, delivery pipe; 103, one-way valve; 1011, matching slope surface; 1012, guide groove; 1013, first end surface; 1014, clamping jaw; 1015, second end surface;

[0050] 11. an operating enclosure;

[0051] 12. a nose pad; 121. a tapered surface; 122. a first mating surface;

[0052] 13. a cloud of droplets. DETAILED DESCRIPTION

[0053] In order to make the technical scheme and beneficial effects of the present application more apparent and easy to understand, the following will be described in detail by way of specific embodiments. The drawings are not necessarily drawn to scale, and local features can be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meaning as the technical and scientific terms in the technical field to which the present application belongs.

[0054] In the description of the present application, the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of simplified description of the present application, and are not intended to indicate that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, i.e. cannot be understood as limiting the present application.

[0055] In the present application, the terms "first" and "second" are only for the purpose of clear description, and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc.; the meaning of "several" is at least one, such as one, two, three, etc.; except for specific and explicit limitations.

[0056] In the present application, unless otherwise defined, the terms "mounting", "connection", "connection", "fixing", "setting", etc. should be understood broadly. For example, "connection" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the present utility model, unless otherwise expressly limited, the first feature is "on", "over", "above" and "top" of the second feature, "under", "below" and "bottom" of the second feature can be direct contact of the first feature and the second feature, or indirect contact of the first feature and the second feature through intermediate medium.Moreover, the first feature is "over", "above" and "top" of the second feature can be directly above or obliquely above the first feature, or just indicate that the horizontal height of the first feature is higher than the horizontal height of the second feature.The first feature is "under", "below" and "bottom" of the second feature can be directly below or obliquely below the first feature, or just indicate that the horizontal height of the first feature is less than the horizontal height of the second feature.

[0058] In order to thoroughly understand the present application, detailed steps and detailed structures will be proposed in the following description in order to explain the technical solutions of the present application.The preferred embodiments of the present application are described in detail as follows, however, in addition to these detailed descriptions, the present application can also have other implementation manners.

[0059] The present embodiment provides a kind of spray device, as shown in Figure Figure 1 Including: outer shell 01, inner shell 02, nozzle assembly 03, blow nozzle 05 and nose pad 12.

[0060] Wherein, outer shell 01 and inner shell 02 form shell assembly, and the cavity is formed in the inside of outer shell 01;Inner shell 02 is installed in outer shell 01, and the air passage is formed between the outer wall of inner shell 02 and the inner wall of outer shell 01.Nozzle assembly 03 is installed in inner shell 02, for spraying atomized medicament;The injection end of nozzle assembly 03 is exposed to inner shell 02, and the injection end is located at the air outlet of air passage.Blow nozzle 05 is communicated with the air inlet of air passage, and blow nozzle 05 is used for user to blow air to air passage.Nose pad 12 is communicated with the air outlet of air passage, and nose pad 12 is used to be placed into the nasal cavity of user to inhale atomized medicament.

[0061] Therefore, when user blows air to blow nozzle 05, the airflow generated in air passage can accelerate nozzle assembly 03 to spray atomized medicament, and enter the nasal cavity of user through nose pad 12.

[0062] The present embodiment provides a kind of spray device, as shown in Figure Figure 1 Blow nozzle 05 is used for user to blow air to air passage, and nose pad 12 is used for user to inhale medicament;Air passage is directly formed between the wall surface of inner shell 02 and outer shell 01, which is simple in structure, and can effectively communicate nose pad 12 and blow nozzle 05.Therefore, when user uses nose pad 12 to inhale medicament, blow nozzle 05 can be held to blow air, on the one hand, with the increase of air pressure in nasal cavity, soft palate closes, separates nasal cavity and oral cavity, avoids small particles into the lung of user;On the other hand, the cloud cluster of spray droplets sprayed at nose pad 12 can enter deeper area of nasal cavity under the driving of airflow generated by blowing, which improves the effectiveness of drug taking.

[0063] The present embodiment provides a method for using the above-mentioned spray device:

[0064] First, the user needs to adjust the spray device to a state ready to be triggered, then the tip of the nose pad 12 is inserted into the user's own nasal cavity, and the mouthpiece 05 is held in the mouth. After completing the above steps, the user blows air with the mouth, making the airflow in the airway in the shell assembly flow, and at the same time or with a delay, the spray device is started to make the nozzle assembly 03 of the spray device spray the atomized medicament. The atomized medicament is carried by the airflow and is discharged from the air outlet of the airway as soon as it is sprayed. The cloud of mist sprayed at the nose pad 12 can enter the deeper area of the nasal cavity under the action of the airflow generated by blowing, thereby improving the effectiveness of drug administration. At this time, the soft palate at the junction of the nasopharynx and oropharynx of the user is closed under the action of the user's blowing, thereby separating the nasal cavity and the oral cavity and preventing small particles from entering the user's lungs.

[0065] In an alternative embodiment, as shown in Figure 2 the outer shell 01 has a mounting opening at one end; the inner shell 02 can be installed into the outer shell 01 through the mounting opening. In this embodiment, the mounting opening of the outer shell 01 is designed to facilitate simple assembly with the inner shell 02. After the inner shell 02 is installed, the outer wall of the inner shell 02 and the inner wall of the outer shell 01 can form an airway, so the formation of the airway is simple. Preferably, the mounting opening is arranged at the opposite end of the air outlet end of the airway. In this way, when the nozzle assembly 03 is first installed into the inner shell 02, and then the inner shell 02 is installed into the outer shell 01 through the mounting opening, the spray end of the nozzle assembly 03 is exposed from the nozzle fixing hole 023 of the inner shell 02, and can be directed towards the air outlet of the airway, making the assembly structure of the product more simple and facilitating the reduction of manufacturing costs.

[0066] In an alternative embodiment, as shown in Figure 3 the inner shell 02 has a sealing skirt 024 radially protruding at one end of the mounting opening, and the sealing skirt 024 seals the mounting opening. In this embodiment, the sealing skirt 024 of the inner shell 02 plays a role in sealing the mounting opening, so that after the inner shell 02 is installed into the outer shell 01, the mounting opening is in a state that cannot flow gas. In this way, the airflow in the airway is fixed to be sprayed from the nose pad 12. Preferably, the sealing skirt 024 is part of the inner shell 02 and is integrally formed with the main body part of the inner shell 02, which can reduce the difficulty and cost of the manufacturing process.

[0067] In an alternative embodiment, as shown in Figure 2As shown in FIG. 1, the outer shell 01 is provided with a convex ring 011 at the position around the air outlet of the airway, and one end of the nose pad 12 is detachably sleeved or embedded in the convex ring 011. In this embodiment, the convex ring 011 of the outer shell 01 can facilitate the detachable connection of the nose pad 12, and facilitate the replacement of the nose pad 12 when the user uses the nose pad 12.

[0068] As shown in FIG. 1, Figure 2 As shown in FIG. 1, the top of the outer shell 01 is formed with an abutting surface 013 at the connection position of the convex ring 011, as shown in FIG. 1, Figure 4 As shown in FIG. 1, the end of the nose pad 12 for sleeving on the convex ring 011 has a first abutting surface 122. When the user installs the nose pad 12 by sleeving it on the convex ring 011, the first abutting surface 122 of the nose pad 12 abuts against the abutting surface 013, indicating that the installation is in place. It can be understood that if the nose pad 12 is designed to be sleeved on the convex ring 011, the abutting surface 013 should be designed on the periphery of the convex ring 011, and if the nose pad 12 is designed to be embedded in the convex ring 011, the abutting surface 013 should be designed on the inner wall of the convex ring 011.

[0069] In an optional embodiment, as shown in FIG. 1, Figure 4 As shown in FIG. 1, the end of the nose pad 12 for sleeving on the convex ring 011 has a first abutting surface 122. When the user installs the nose pad 12 by sleeving it on the convex ring 011, the first abutting surface 122 of the nose pad 12 abuts against the abutting surface 013, indicating that the installation is in place. It can be understood that if the nose pad 12 is designed to be sleeved on the convex ring 011, the abutting surface 013 should be designed on the periphery of the convex ring 011, and if the nose pad 12 is designed to be embedded in the convex ring 011, the abutting surface 013 should be designed on the inner wall of the convex ring 011.

[0070] In an optional embodiment, as shown in FIG. 1, Figure 1 、 Figure 2 、 Figure 5 As shown in FIG. 1, the outer shell 01 is provided with an airway interface 014 at the position around the air inlet of the airway, and one end of the mouthpiece 05 is detachably sleeved or embedded in the airway interface 014. In this embodiment, the airway interface 014 of the outer shell 01 can facilitate the detachable connection of the mouthpiece 05, and facilitate the replacement of the mouthpiece 05 when the user uses the mouthpiece 05.

[0071] As shown in FIG. 1, Figure 2 As shown in FIG. 1, the outer shell 01 is provided with an airway interface 014 at the position around the air inlet of the airway, and one end of the mouthpiece 05 is detachably sleeved or embedded in the airway interface 014. In this embodiment, the airway interface 014 of the outer shell 01 can facilitate the detachable connection of the mouthpiece 05, and facilitate the replacement of the mouthpiece 05 when the user uses the mouthpiece 05. Figure 5 As shown in FIG. 1, the end of the nose pad 12 for sleeving on the convex ring 011 has a first abutting surface 122. When the user installs the nose pad 12 by sleeving it on the convex ring 011, the first abutting surface 122 of the nose pad 12 abuts against the abutting surface 013, indicating that the installation is in place. It can be understood that if the nose pad 12 is designed to be sleeved on the convex ring 011, the abutting surface 013 should be designed on the periphery of the convex ring 011, and if the nose pad 12 is designed to be embedded in the convex ring 011, the abutting surface 013 should be designed on the inner wall of the convex ring 011.

[0072] In an optional embodiment, the mouthpiece 05 is tubular, as shown in FIG. 1, Figure 5 As shown in FIG. 1, the end of the nose pad 12 for sleeving on the convex ring 011 has a first abutting surface 122. When the user installs the nose pad 12 by sleeving it on the convex ring 011, the first abutting surface 122 of the nose pad 12 abuts against the abutting surface 013, indicating that the installation is in place. It can be understood that if the nose pad 12 is designed to be sleeved on the convex ring 011, the abutting surface 013 should be designed on the periphery of the convex ring 011, and if the nose pad 12 is designed to be embedded in the convex ring 011, the abutting surface 013 should be designed on the inner wall of the convex ring 011.

[0073] In an optional embodiment, as shown in Figure 3 , the outer wall of the inner shell 02 protrudes a limiting rib 022, as shown in Figure 1 , the outer side of the limiting rib 022 abuts the inner wall of the outer shell 01. In this embodiment, through the arrangement of the limiting rib 022, the inner shell 02 located inside the outer shell 01 is supported by the inner wall of the outer shell 01, so that the position of the inner shell 02 after installation is more stable and not easy to shake; at the same time, due to the existence of the limiting rib 022, the outer wall of the inner shell 02 and the inner wall of the outer shell 01 always maintain a distance, which is conducive to ensuring the smoothness of the airway.

[0074] In an optional embodiment, as shown in Figure 2 , the inner wall of the outer shell 01 has a plurality of limiting grooves 012, as shown in Figure 2 , Figure 3 , the limiting rib 022 is arranged corresponding to the plurality of limiting grooves 012, and the limiting rib 022 is clamped into the corresponding limiting groove 012. In this embodiment, the arrangement of the limiting groove 012 and the design of the limiting rib 022 clamped into the corresponding limiting groove 012 can improve the stability of the inner shell 02 after installation, avoid the rotation of the inner shell 02 around its own axis, and at the same time improve the coaxiality with the outer shell 01, so as to ensure that the jet direction of the nozzle assembly 03 is towards the nose pad 12.

[0075] In an optional embodiment, as shown in Figure 1 , the spray device further comprises a spray trigger mechanism for triggering the nozzle assembly 03 to spray the medicament, the spray trigger mechanism comprising a trigger element 06 and a delivery assembly 10, by operating the trigger element 06, the delivery assembly 10 can deliver the medicament to the nozzle assembly 03, and the nozzle assembly 03 sprays the atomized medicament. In this embodiment, through the setting of the trigger element 06, the starting operation of the spray device is more simple, which is convenient for the user to start the spray device at any time after completing the preparation in the use process, and improves the use convenience. For example, when the user inserts the conical surface 121 of the nose pad 12 into his own nasal cavity, and blows air through the mouthpiece 05, the trigger element 06 is operated simultaneously or delayed to start the spray device.

[0076] In an optional embodiment, as shown in Figure 3 , the side wall of the inner shell 02 has a trigger opening, the side wall of the inner shell 02 protrudes a sealing stop ring 021 around the position of the trigger opening, as shown in Figure 1 , the outer side of the sealing stop ring 021 abuts the inner wall of the outer shell 01, as shown in Figure 2 , the side wall of the outer shell 01 has a trigger channel 015 aligned with the sealing stop ring 021, as shown in Figure 1As shown, the trigger element 06 is arranged in the trigger channel 015 and the sealing block 021. In this embodiment, the sealing block 021 of the inner housing 02 and the trigger channel 015 together form a channel for the trigger element 06 to move in, which is isolated from the airway by the wall of the sealing block 021, thus not affecting the air intake and air exhaust in the airway. One end of the trigger element 06 can protrude out of the outer surface of the outer housing 01 from the trigger channel 015 for the user to operate, and the other end can be inserted into the inner housing 02 under the user's operation to control the movement of the delivery assembly 10. The structural scheme of this embodiment can ensure the integrity of the airway while allowing the trigger element 06 to easily drive the internal components of the inner housing 02 and be easily operated from the outside by the user.

[0077] In an alternative embodiment, as shown in Figure 1 The spray device further includes a blocking piece 04 and a drive spring 07. The drive spring 07 abuts against the delivery assembly 10 and can provide a pushing force to the delivery assembly 10 to deliver the medicament to the nozzle assembly 03 in a compressed state. The blocking piece 04 is fixed to the trigger element 06 and can be switched from a blocking position to a avoiding position of the delivery assembly 10 under the driving of the trigger element 06. When the blocking piece 04 blocks the delivery assembly 10, the delivery assembly 10 is limited in position, and when the blocking piece 04 avoids the delivery assembly 10, the delivery assembly 10 can move. In this embodiment, by arranging the drive spring 07 in the spray device, the elastic potential energy of the delivery assembly 10 can be provided by the elastic force generated by the compression of the drive spring 07, and the movement of the delivery assembly 10 is limited by the blocking piece 04, and the limitation can be released only by operating the trigger element 06, thereby achieving the on-demand triggering of the spray under the active operation of the user. In addition, when the drive spring 07 is compressed quantitatively, the potential energy provided is determined, which is conducive to keeping the amount of each spray of the nozzle assembly 03 uniform. The delivery assembly 10 is a component fixed to the liquid tank 09 of the spray device for driving the liquid tank 09 to move, and the nozzle assembly 03 can extract the liquid from the liquid tank 09 and atomize and spray the liquid during the movement of the liquid tank 09.

[0078] In an alternative embodiment, as shown in Figure 6 The nozzle assembly 03 includes a chip nozzle 033, and the chip nozzle 033 has a slit-shaped liquid channel 035 therein, which includes two sub-channels at the liquid outlet 0331, and the two sub-channels are at a certain angle. In this embodiment, the structure of the chip nozzle 033 can cause the high-speed jets generated from the two sub-channels to collide and atomize at the spray end of the nozzle assembly 03, and a cloud of mist droplets 13 with a particle size distribution D 50 <10μm can be generated.

[0079] In an alternative embodiment, as shown in Figure 6As shown, along the liquid ejection direction of the sub-passage, the sub-passage sequentially comprises a surge section 0333 and a translation section 0332, wherein the channel cross-sectional area of the surge section 0333 is smoothly decreasing, and the channel cross-sectional area of the translation section 0332 remains unchanged. Under this structure, the liquid in the liquid channel 035 can be accelerated and smoothed by sequentially passing through the surge section 0333 and the translation section 0332, and is ejected from the liquid outlet 0331 in a high-speed laminar flow state, thereby ensuring that the high-speed jets generated from the two sub-passage respectively stably collide and meet the collision intensity. Preferably, the channel cross-sectional area of the surge section 0333 decreases exponentially, and the acceleration effect on the liquid is more obvious.

[0080] In an alternative embodiment, as shown in Figure 6 , the two sub-passage form an angle of 75°-105°, and preferably an angle of 90°. Under this angle range, the effect of forming the mist cloud 13 is better.

[0081] As shown in Figure 6 , the present embodiment provides a nozzle assembly 03, which comprises a nozzle support 031 for fixing the chip nozzle 033, a delivery channel 032 for delivering liquid, a nozzle filter core 034 for filtering liquid, and a chip nozzle 033 for atomizing liquid. The nozzle filter core 034 can meet the requirements that when the liquid is pumped, the air outside the chip nozzle 033 cannot enter the delivery channel 032, and when the liquid in the liquid channel 035 is squeezed, the liquid can pass around the nozzle filter core 034 and enter the cavity of the chip nozzle 033. The nozzle support 031 is used to support in the nozzle fixing hole 023 to stabilize the nozzle assembly 03. The chip nozzle 033 can be made of a silicon-based material.

[0082] The present embodiment provides a driving mechanism of a delivery assembly 10, as shown in Figure 1 , Figure 3 , which comprises an operation shell 11, a driven sleeve 08, and a guide slope 026 formed in the inner housing 02. As shown in Figure 1 , the operation shell 11 is located at the outermost part of the spraying device, which is grabbed by the user's hand for rotation. The operation shell 11 is fixed in the circumferential direction with the driven sleeve 08, and can be separated from the driven sleeve 08 in the axial direction. The operation shell 11 avoids mechanical injury to the user during use of the device. The driven sleeve 08 is installed in the operation shell 11 and can rotate with the operation shell 11. One end of the driven sleeve 08 also extends into the inner housing 02. The liquid storage tank 09 and the delivery assembly 10 are located inside the driven sleeve 08, as shown in Figure 7 , the delivery assembly 10 comprises a delivery seat 101 and a delivery pipe 102 fixed in the center of the delivery seat 101. The side wall of the delivery seat 101 is provided with a guide groove 1012 along the axial direction of the delivery seat 101, which is used to guide the movement direction, as shown in Figure 8As shown, a guide block 083 protrudes from the inner wall of the driven jacket 08. After the conveying assembly 10 is installed in the driven jacket 08, the guide block 083 is in the guide groove 1012. That is, when the driven jacket 08 rotates around the circumference, the conveying assembly 10 can move around the circumference with the driven jacket 08. At the same time, the conveying assembly 10 also has the freedom to move along the axial direction.

[0083] like Figure 7 As shown, the delivery assembly 10 also includes a one-way valve 103, a gripper 1014, and a mating slope 1011. The one-way valve 103 is installed at the upper end of the delivery pipe 102, which is used to connect to the delivery channel 032 of the nozzle assembly 03. The one-way valve 103 ensures that the liquid medicine does not flow back into the storage tank 09. The gripper 1014 is used to clamp the storage tank 09 to move it. The mating slope 1011 is used to cooperate with the guide slope 026, such as... Figure 3 As shown, since the guide slope 026 extends along the circumferential direction and its height gradually changes along the axial direction, when the mating slope 1011 of the conveying assembly 10 contacts the guide slope 026 and the conveying assembly 10 rotates around the axial direction, it is guided by the guide slope 026 and can move axially away from the top of the inner housing 02. Preferably, in order to improve the uniformity of force distribution, multiple guide slopes 026 are provided and arranged symmetrically around the axis of the conveying assembly 10.

[0084] Under the force of the drive spring 07, the conveying assembly 10 can move axially to a position where its first end face 1013 abuts against the top of the inner housing 02. When the conveying assembly 10 moves axially away from the top of the inner housing 02, the drive spring 07 is compressed, increasing its elastic potential energy. The conveying assembly 10 abuts against the drive spring 07 through its second end face 1015. When the mating slope 1011 moves to the lowest point of the guide slope 026, the conveying assembly 10 reaches its downward limit position. At this time, the drive spring 07 is compressed to its minimum length, and the blocking member 04 moves to a position that restricts the axial movement of the conveying assembly 10, thus restricting the activity of the conveying assembly 10 to trigger the nozzle assembly 03 to spray. On the other hand, the blocking member 04 is also in a state that can be operated by the triggering element 06. The user can operate the triggering element 06 to release the restriction and start the nozzle assembly 03 to spray.

[0085] like Figure 9 As shown, the blocking member 04 is annular with a central hole through which the conveying assembly 10 passes. The blocking member 04 is capable of radial movement. Understandably, when the blocking member 04 moves radially, its central hole deviates from the axial direction of the conveying assembly 10. This state is the biased state of the blocking member 04, therefore the conveying assembly 10 will be unable to move through the blocking member 04 to the top of the inner housing 02. Figure 9As shown, the lower end of the blocking member 04 has a blocking surface 046. When the blocking member 04 is in an offset state, the blocking surface 046 abuts against the first end face 1013 of the conveying assembly 10, restricting the movement of the conveying assembly 10. The upper end of the blocking member 04 has a supporting surface 045, as shown... Figure 3 As shown, the top of the inner housing 02 has a support body 025, which supports the support surface 045, so that the blocking member 04 has a supporting force to block the movement of the conveying assembly 10.

[0086] In this embodiment, the blocking component 04 moves radially, and its structure and working principle are as follows:

[0087] like Figure 8 As shown, the third end face 082 of the driven outer sleeve 08 has a protrusion 081, as... Figure 9 As shown, the blocking member 04 has a fourth end face 047, which abuts against the third end face 082 of the driven outer sleeve 08, and the protrusion 081 is located on the outside of the blocking member 04.

[0088] like Figure 9 As shown, the edge of the blocking member 04 has a compressed portion 044, such as Figure 8 As shown, the protrusion 081 extends circumferentially along the third end face 082, and has a pressing surface 0811 and a transition surface 0812 on its radially inward side. The function of the pressing surface 0811 is to gradually press the pressed part 044 as the driven jacket 08 rotates (the directly operated object is the operating housing 11) with the user's operation, causing the blocking member 04 to move radially along the driven jacket 08 and deviate from the axis of the conveying assembly 10. Specifically, in the opposite direction to the designed rotation direction of the driven jacket 08, the distance between the point on the pressing surface 0811 and the axis of the driven jacket 08 gradually decreases. The transition surface 0812 does not participate in pressing the pressed part 044, and the length of the transition surface 0812 is preferably less than the length of the pressing surface 0811, making the slope of the pressing surface 0811 in the structure of the protrusion 081 more gradual.

[0089] The blocking element 04 can be restored from the biased state to the initial position under the operation of the user (the initial position means that the hole through which the conveying assembly 10 passes through the blocking element 04 is aligned with the conveying assembly 10 along the axis). The blocking element 04 is fixed to the trigger element 06. When the blocking element 04 is in the biased state, part of the trigger element 06 is exposed in the trigger channel 015. The user can press the trigger element 06 to make the trigger element 06 drive the blocking element 04 to return to the initial position.

[0090] When the blocking member 04 returns to its initial position from the biased state under the operation of the user, its blocking effect on the conveying assembly 10 disappears, and the conveying assembly 10 will move towards the nozzle assembly 03 under the action of the drive spring 07, causing the nozzle assembly 03 to spray.

[0091] In an optional embodiment, as shown in Figure 9 The blocking piece 04 further comprises a guide piece 042 and a guide slot 043, both of which extend along the moving direction of the blocking piece 04, and the inner housing 02 has structures matching the guide piece 042 and the guide slot 043 to stabilize the linear movement of the blocking piece 04 when moving in the radial direction.

[0092] In an optional embodiment, as shown in Figure 9 The extrusion part 044 comprises a deflection section 0441 and a non-deflection section 0442, the outer diameter of the non-deflection section 0442 is constant, and the outer diameter of the deflection section 0441 gradually decreases in the axial direction of the blocking piece 04. The deflection section 0441 is a straight bevel or a bevel with a transition change at an obtuse angle with the non-deflection section 0442. With this structure, when the extrusion part 044 contacts the extrusion surface 0811, the deflection section 0441 first contacts the extrusion surface 0811, and the blocking piece 04 gradually moves under the action, and then the non-deflection section 0442 contacts the extrusion surface 0811, and the movement amount of the blocking piece 04 gradually decreases until it stops, which plays a role in making the movement of the blocking piece 04 more smooth.

[0093] In an optional embodiment, as shown in Figure 9 The side of the blocking piece 04 facing the trigger element 06 has a clamping hole 041. As shown in Figure 10 The outward side of the trigger element 06 is a pressing surface 061 for the user's fingers to press, and the inward side is a non-contact surface 062 for installation towards the sealing ring 021. The non-contact surface 062 has a clamping column 063, which is clamped into the clamping hole 041 after the clamping column 063 is clamped into the clamping hole 041, and the trigger element 06 is assembled and fixed with the blocking piece 04. The pressing surface 061 is preferably designed as a circular arc to improve the comfort of operation. The fixing mode of the clamping column 063 and the clamping hole 041 includes but is not limited to buckling, interference, threaded connection, etc. The cross-sectional profile of the trigger element 06 is consistent with the trigger channel 015, which is circular, square, rectangular, oval or semicircular, etc., to ensure that the trigger element 06 does not shake when pressed.

[0094] In an optional embodiment, as shown in Figure 11 The liquid storage tank 09 has a three-layer structure, the outermost layer is a hard outer shell 091, the middle layer is an inner shell 092, and the innermost layer is a soft inner liner 093, wherein the inner liner 093 is directly filled with liquid medicine. The liquid storage tank 09 is provided with a infusion port 094 at the top end, and the delivery pipe 102 is inserted into the infusion port 094 to extract liquid through the outer shell 091, the inner shell 092 and the inner liner 093. The bottom of the liquid storage tank 09 is provided with an air inlet hole 095 passing through the outer shell 091 and the inner shell 092, respectively, and the air inlet hole 095 is used to balance the air pressure.

[0095] It should be understood that the above examples are exemplary and are not intended to limit the scope of the claims encompassing all possible embodiments. Various modifications and changes can be made thereto without departing from the scope of the present disclosure, which is set forth in the claims. Similarly, each of the individual features of the above examples can be arbitrarily combined to form additional embodiments of the present application, which can not be explicitly described. Therefore, the above examples merely express several embodiments of the present application, and do not limit the scope of the patent protection of the present application.

Claims

1. A spray device, characterized in that The utility model relates to a kind of nebulizer, including: Shell assembly, the shell assembly includes outer shell (01) and inner shell (02), the cavity is formed inside the outer shell (01);The inner shell (02) is installed in the outer shell (01), and the outer wall of the inner shell (02) is formed between the inner wall of the outer shell (01) air passage; Nozzle assembly (03) is installed in the inner shell (02), for spraying atomized medicament;The injection end of the nozzle assembly (03) is exposed to the inner shell (02), and the injection end is located at the air outlet of the air passage; Blowing nozzle (05) is communicated with the air inlet of the air passage, and the blowing nozzle (05) is used for user to blow air to the air passage; Nose pad (12) is communicated with the air outlet of the air passage, and the nose pad (12) is used to be placed into the nasal cavity of user to inhale atomized medicament; When user blows air to the blowing nozzle (05), air flow in the air passage accelerates atomized medicament sprayed by the nozzle assembly (03) to enter the nasal cavity of user through the nose pad (12).

2. The spray device of claim 1, wherein, The outer shell (01) has mounting opening at one end;The inner shell (02) can be loaded into the outer shell (01) through the mounting opening.

3. The spray device of claim 2, wherein, The inner shell (02) is radially protruded with sealing skirt (024) at one end of the mounting opening, and the sealing skirt (024) closes the mounting opening.

4. The spray device of claim 1, wherein, The outer shell (01) is provided with convex ring (011) around the position of the air outlet of the air passage, and one end of the nose pad (12) is detachably sleeved or embedded in the convex ring (011).

5. The spray device of claim 1, wherein, The outer shell (01) is protruded with air passage interface (014) around the position of the air inlet of the air passage, and one end of the blowing nozzle (05) is detachably sleeved or embedded in the air passage interface (014).

6. The spray device according to any one of claims 1-5, wherein, The outer wall of the inner shell (02) is protruded with limiting rib (022), and the outer side of the limiting rib (022) abuts against the inner wall of the outer shell (01).

7. The spray device of claim 6, wherein, The inner wall of the outer shell (01) has a plurality of limiting grooves (012), and the limiting rib (022) is arranged corresponding to a plurality of the limiting grooves (012), and the limiting rib (022) is clamped into the corresponding limiting groove (012).

8. The spray device of any one of claims 1-5, wherein, The nebulizer further includes a spray trigger mechanism for triggering the nozzle assembly (03) to spray medicament, and the spray trigger mechanism includes a trigger element (06) and a delivery assembly (10), and by operating the trigger element (06), the delivery assembly (10) can deliver medicament to the nozzle assembly (03), and the nozzle assembly (03) sprays atomized medicament.

9. The spray device of claim 8, wherein, The side wall of the inner shell (02) has trigger opening, the side wall of the inner shell (02) is protruded with sealing stop ring (021) around the position of the trigger opening, the outer side of the sealing stop ring (021) abuts against the inner wall of the outer shell (01), the side wall of the outer shell (01) has trigger channel (015) aligned with the sealing stop ring (021), and the trigger element (06) is provided in the trigger channel (015) and the sealing stop ring (021).

10. The spray device of claim 8, wherein, The spraying device further comprises a blocking piece (04); the blocking piece (04) is fixed with the trigger element (06) and can be switched from a position of blocking the conveying assembly (10) to a position of avoiding the conveying assembly (10) under the driving of the trigger element (06); when the blocking piece (04) blocks the conveying assembly (10), the conveying assembly (10) is limited; when the blocking piece (04) avoids the conveying assembly (10), the conveying assembly (10) can move.

11. The spray device of any one of claims 1-5, wherein, The nozzle assembly (03) comprises a chip nozzle (033) with a slit-shaped liquid channel (035) therein; the liquid channel (035) comprises two sub-channels at the liquid outlet (0331) thereof, and the two sub-channels are at a certain angle.

12. The spray device of claim 11, wherein, In the liquid ejection direction of the sub-channels, the sub-channels successively comprise a surge section (0333) and a translation section (0332); the channel cross-sectional area of the surge section (0333) is smoothly reduced, and the channel cross-sectional area of the translation section (0332) remains unchanged.

13. The spray device of claim 11, wherein, The two sub-channels are at an angle of 75°-105°.

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