Multi-dose powder aerosol inhaler

Abstract

This invention relates to a multi-dose powder inhaler, comprising: a mouthpiece; a storage chamber including multiple compartments for storing powder; and an auxiliary component including separately disposed airflow channels and inhalation channels, the inhalation channels communicating with the mouthpiece, and the airflow channels and inhalation channels respectively communicating with the compartments. When the auxiliary component is in communication with a compartment, the airflow channels guide gas tangentially into the compartment, and the inhalation channels allow powder from the compartment to pass through and enter the mouthpiece. The storage chamber and the auxiliary component move relative to each other, allowing the auxiliary component to switch communication with the next compartment. This multi-dose powder inhaler improves powder delivery efficiency while achieving multi-dose supply, simplifies the overall structure, and makes operation more convenient and automated.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a multi-dose powder inhaler. Background Technology

[0002] A powder inhaler is a device that works by having the patient inhale actively, causing the dry powder of medication to be atomized and dispersed, and then delivered to the lungs. The powder is usually mixed with a carrier and then stored in capsules, reservoirs, or cavities using precise dosage measurements, ensuring the accuracy and stability of the dosage during inhalation.

[0003] In existing powder inhalers, when a user inhales, a portion of the single dose of powder enters the body, a portion remains on the inner wall of the inhaler's airflow channel, and a portion remains in the vesicle, reservoir, or capsule. This results in a relatively low amount of effective powder delivered into the body, leading to powder waste and compromising therapeutic efficacy.

[0004] The reasons for the low delivery efficiency of inhalers include the following: (1) Formulation: After the drug powder and excipients are mixed, large powder agglomerates are easily generated. During inhalation, it is difficult to separate the drug powder from the excipients, resulting in large powder size. Large powder particles are easy to deposit in the device.

[0005] (2) Device structure design: If the airway structure is more complex, the path of the powder with the airflow is longer, and the residue generated by the collision will increase; if the airway structure is simple, the powder agglomeration and dispersion effect is poor, and large powder particles are easy to remain in the inhaler or deposit in the oropharynx.

[0006] (3) User side: The user's inhalation flow rate is insufficient to disperse the powder, the inhalation time is short, or the inhaler is used incorrectly. Summary of the Invention

[0007] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a multi-dose powder inhaler that can improve the powder delivery efficiency while achieving multi-dose supply, and is conducive to simplifying the overall structure and making operation more convenient and automated.

[0008] Therefore, the present invention provides the following technical solution.

[0009] This invention provides a multi-dose powder inhaler, the multi-dose powder inhaler comprising: Suction nozzle; Storage compartment, which includes multiple chambers for storing powder; The auxiliary component includes a separately configured airflow channel and a suction channel, the suction channel being connected to the nozzle, and the airflow channel and the suction channel being connected to the chamber respectively; When the auxiliary component is in communication with the chamber, the airflow channel is used to guide gas tangentially into the chamber, and the suction channel is used to allow powder in the chamber to pass through and enter the nozzle; The storage compartment and the auxiliary component move relative to each other, so that the auxiliary component switches from the current compartment to the next compartment.

[0010] Optionally, the opening of the compartment is sealed by a sealing element; The auxiliary component is also provided with a puncture structure, which punctures the sealing element during the process of switching the auxiliary component to the next compartment.

[0011] Optionally, after the puncture structure punctures the sealing element, the auxiliary component seals the opening of the compartment.

[0012] Optionally, the auxiliary component is further provided with a cover; after the piercing structure punctures the sealing element, the cover covers the end face of the opening end of the compartment.

[0013] Optionally, one of the storage compartment and the auxiliary component can rotate relative to the other about a first axis, so that the auxiliary component switches from the current compartment position to a position relative to the next compartment position.

[0014] Optionally, the multiple compartments are arranged in a circular array around the first axis.

[0015] Optionally, when the auxiliary component is in communication with the compartment, at least one of the airflow channel and the suction channel extends at least partially into the corresponding compartment; During the rotation of one of the storage compartment and the auxiliary component relative to the other, the storage compartment and the auxiliary component can also undergo relative displacement along the first axis, so that the auxiliary component can exit the current compartment and then extend into the next compartment.

[0016] Optionally, the multi-dose powder inhaler further includes a mounting component, to which the auxiliary component is inmovably mounted; The storage compartment is rotatably disposed and the mounting component is movably disposed along a first axis, or the mounting component is rotatably disposed and the storage compartment is movably disposed along a first axis, or the mounting component and the storage compartment are slidably engaged along a first axis and the mounting component and the storage compartment can rotate relative to each other.

[0017] Optionally, the storage compartment is provided with a first guiding structure, and the mounting component is provided with a second guiding structure; During the rotation of the storage compartment and the auxiliary component relative to the other, the first guide structure and the second guide structure cooperate to guide the storage compartment and the auxiliary component to undergo relative displacement along the first axis.

[0018] Optionally, the first guide structure includes a ratchet groove and a lifting portion, and the second guide structure is a ratchet; when the auxiliary component is in communication with the compartment, the second guide structure engages with the corresponding ratchet groove. During the rotation of one of the storage compartments and the auxiliary component relative to the other, the second guide structure disengages from the ratchet groove and abuts against the lifting portion, allowing the auxiliary component to exit the current compartment until the second guide structure engages with the next ratchet groove, at which point the auxiliary component extends into the next compartment.

[0019] Optionally, when the mounting component is rotated by an external force, the mounting component causes the auxiliary component to rotate relative to the storage compartment, and with the cooperation of the first guide structure and the second guide structure, the mounting component causes the auxiliary component to be displaced along the first axis; Alternatively, when an external force rotates the storage compartment, the storage compartment rotates relative to the mounting component, and with the cooperation of the first guide structure and the second guide structure, the storage compartment is displaced along the first axis.

[0020] Optionally, the number of the first guide structures is equal to the number of the compartments, and the number of the second guide structures is one.

[0021] Optionally, the mounting component is provided with connected protrusions and limiting blocks, and the storage compartment is provided with connected through holes and chambers; The protrusion passes through the through hole, and the limiting block is located in the cavity. The limiting block is used to prevent the protrusion from separating from the through hole. The protruding post slides into the through hole and / or the limiting block slides into the chamber, so that the mounting member and the storage compartment slide into each other along the first axis.

[0022] Optionally, the chamber into which the accessory extends is currently empty before the first use of the multi-dose powder inhaler. Alternatively, the opening of the compartment is sealed by a sealing element; at least one of the airflow passage and the suction passage has a pointed end facing the storage compartment to form a puncture structure; during the process of the auxiliary component extending into the corresponding compartment, the puncture structure punctures the sealing element.

[0023] Optionally, the multi-dose powder inhaler further includes a mounting component, a base, and a protective cover. The mouthpiece and the auxiliary component are respectively mounted on the mounting component, and the storage compartment is mounted on the base. The base and the protective cover together form a cavity, and the mouthpiece, the storage compartment, and the auxiliary component are all located in the cavity. And / or, the compartment is hemispherical, and the airflow outlet of the airflow channel extends tangentially along the compartment; And / or, the airflow inlet of the airflow channel can be connected to the outside of the multi-dose powder inhaler; And / or, the central axis of the inhalation channel coincides with the central axis of the chamber; And / or, the chamber is hemispherical, the central axis of the inhalation channel coincides with the center of the chamber, and the airflow channel extends spirally around the central axis of the inhalation channel; And / or, the inhalation channel is provided with a screen; And / or, when the auxiliary component moves, the suction nozzle moves synchronously with it.

[0024] The present invention has the following technical effects: This invention provides a multi-dose powder inhaler with a storage compartment containing multiple chambers, capable of supplying powder multiple times. The multi-dose powder inhaler also includes an auxiliary component, configured to include an airflow channel and an inhalation channel. During inhalation, the airflow channel tangentially introduces airflow into the chamber currently supplying powder, creating a cyclone within the chamber. This facilitates effective separation of the powder from the carrier, reducing the content of large powder particles and increasing the content of fine powder particles, thereby improving powder delivery volume, particularly increasing powder delivery to the lungs, i.e., improving powder delivery efficiency.

[0025] In addition, the multi-dose powder inhaler is configured to allow relative movement between the storage compartment and the auxiliary component, which allows the auxiliary component to be switched to connect with the next compartment. This enables the auxiliary component to supply powder to each compartment. Compared with the existing technology that requires manual removal of empty capsules and insertion of new capsules, this solution is more automated and convenient.

[0026] Furthermore, the auxiliary component's inhalation channel establishes a connecting channel between the chamber and the mouthpiece, allowing the mouthpiece to supply powder to each chamber without requiring additional parts to connect the chamber and mouthpiece, or without requiring additional mechanisms to switch mouthpiece 1 to connect to a new chamber, thus simplifying the overall structure. This application's multi-dose powder inhaler improves powder delivery efficiency while achieving multi-dose supply, simplifying the overall structure and making operation more convenient and automated. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the multi-dose powder inhaler of the present invention in its initial state; Figure 2 This is an exploded view of the structure of the multi-dose powder inhaler of the present invention; Figure 3 This is a three-dimensional structural diagram of the auxiliary component of the present invention; Figure 4 This is a side view of the auxiliary component of the present invention; Figure 5 This is a three-dimensional structural diagram of the storage compartment of the present invention; Figure 6 This is a cross-sectional view of the storage compartment of the present invention; Figure 7 This is a three-dimensional structural diagram of the mounting component of the present invention; Figure 8 This is a partial structural cross-sectional view of the multi-dose powder inhaler of the present invention in the inhalation state; Figure 9 This is a partial structural side view of the multi-dose powder inhaler of the present invention in the inhalation state; Figure 10 This is a partial three-dimensional view of the multi-dose powder inhaler pair when the second guiding structure of the present invention abuts against the top part; Figure 11 This is a partial structural side view of the multi-dose powder inhaler pair when the second guide structure of the present invention abuts against the top portion; Figure 12 This is a partial cross-sectional view of the multi-dose powder inhaler pair when the second guide structure of the present invention abuts against the top portion; Figure 13 This is a three-dimensional structural diagram of the base of the present invention; Figure 14 This is a side view of the multi-dose powder inhaler of the present invention in its initial state.

[0028] Explanation of reference numerals in the attached figures 100. Multi-dose powder inhaler; 1. Suction nozzle; 11. Annular extended ribs; 12. Annular contact surface; 2. Storage compartment; 21. Compartment; 22. Sealing element; 23. First guide structure; 231. Racket groove; 2311. Guide ramp; 232. Lifting part; 24. Through hole; 25. Chamber; 26. Mounting post; 3. Auxiliary components; 31. Airflow channel; 311. Airflow inlet; 312. Airflow outlet; 32. Inhalation channel; 33. Puncture structure; 331. First puncture structure; 332. Second puncture structure; 34. Cover; 35. Screen; 4. Mounting component; 41. Second guide structure; 42. Protruding post; 43. Limiting block; 44. Annular groove; 45. Mounting hole; 46. Air inlet; 47. Mating surface; 5. Base; 51. Cavity; 511. Mounting slot; 52. Anti-slip protrusion; 53. Operation indicator; 6. Protective cover; 7. Cavity; 8. Gaps. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] In this invention, "upper" and "lower" are both used in the sense of... Figure 1 The markings in the text shall prevail.

[0035] The following is based on Figures 1 to 14 This invention provides a detailed description of the multi-dose powder inhaler.

[0036] In this embodiment, such as Figures 1 to 6 As shown, the multi-dose powder inhaler 100 includes a mouthpiece 1, a storage chamber 2, and an auxiliary component 3. The mouthpiece 1 is for the user to inhale the powder after holding it in their mouth. The storage chamber 2 includes multiple compartments 21 for storing powder. The powder can be stored directly in the compartments 21, or it can be stored in the compartments 21 in the form of capsules or vesicles. The auxiliary component 3 includes a separately configured airflow channel 31 and an inhalation channel 32. The airflow in the airflow channel 31 and the inhalation channel 32 do not interfere with each other. The inhalation channel 32 is connected to the mouthpiece 1. The airflow inlet 311 of the airflow channel 31 can be connected to the outside of the multi-dose powder inhaler 100. The airflow outlet 312 of the airflow channel 31 and the inhalation channel 32 are respectively connected to the compartments 21. Of course, the airflow inlet 311 may not be connected to the outside of the multi-dose powder inhaler 100; instead, the airflow inlet 311 can be connected to the gas reservoir.

[0037] When the auxiliary component 3 is in communication with the chamber 21, the user inhales by holding the mouthpiece 1 in their mouth. External airflow sequentially enters the chamber 21 through the airflow inlet 311, the internal channel of the airflow channel 31, and the airflow outlet 312. Furthermore, this application optimizes the structure of the airflow channel 31 by setting the airflow outlet 312 to extend tangentially along the wall of the chamber 21. This allows the airflow channel 31 to guide gas tangentially into the chamber 21. Thus, the gas in the airflow channel 31 enters the chamber 21 tangentially along the wall of the chamber 21, forming a rotating airflow (cyclone) within the chamber 21. On one hand, the cyclone generates sufficient collisions, increasing the residence time of powder particles in the chamber 21, which is beneficial for separating powder (e.g., pharmaceutical powder) from the carrier surface. While forming as many fine particles as possible, the cyclone generates centrifugal force. Large powder particles (such as carriers and agglomerated powders) are subject to greater centrifugal force due to their relatively large mass and inertia. They are thrown against the walls of chamber 21 and fall to the bottom of chamber 21, thus capturing as many large powder particles as possible in chamber 21. This achieves the capture of large powder particles (e.g., those with a diameter greater than 5 μm). In addition, fine powder particles are relatively light and have low inertia. They easily rotate with the airflow and move towards the central low-pressure area. They then enter the inhalation channel 32 and enter the user's mouth through the mouthpiece 1, and are then delivered to the lungs. This achieves the delivery of fine powder particles (e.g., those with a diameter less than or equal to 5 μm). The delivery path of fine powder particles is longer, which is beneficial to increasing the amount of powder delivered to the lungs.

[0038] Furthermore, the relative movement between the storage compartment 2 and the auxiliary component 3 allows the auxiliary component 3 to switch from the current compartment 21 to the next compartment 21. This "relative movement between the storage compartment 2 and the auxiliary component 3" can mean that the storage compartment 2 moves relative to the auxiliary component 3 while the auxiliary component 3 remains stationary, or that the auxiliary component 3 moves relative to the storage compartment 2 while the storage compartment 2 remains stationary, or that both the storage compartment 2 and the auxiliary component 3 move. Specifically, when the compartment 21 connected to the auxiliary component 3 is empty and a new compartment 21 needs to be filled with powder, the relative movement between the storage compartment 2 and the auxiliary component 3 adjusts the position of the auxiliary component 3 relative to the storage compartment 2, allowing the auxiliary component 3 to connect to the next compartment 21 for the user to inhale again.

[0039] In the above technical solution, the storage compartment 2 of the multi-dose powder inhaler 100 is equipped with multiple chambers 21, which can supply powder multiple times. The multi-dose powder inhaler 100 also adds an auxiliary component 3, which is configured to include an airflow channel 31 and an inhalation channel 32. During the user's inhalation, the airflow channel 31 tangentially introduces airflow into the chamber 21 currently supplying powder, forming a cyclone in the chamber 21. This facilitates effective separation of powder and carrier, reduces the content of large powder particles, increases the content of fine powder particles, and improves the powder delivery volume, especially the powder delivery volume to the lungs, that is, improves the powder delivery efficiency.

[0040] In addition, the multi-dose powder inhaler 100 also configures the storage chamber 2 and the auxiliary component 3 to be able to move relative to each other, so that the auxiliary component 3 can be switched to communicate with the next chamber 21, so that the auxiliary component 3 can cooperate with each chamber 21 to supply powder. Compared with the existing technology that requires manual removal of empty capsules and insertion of new capsules, this solution is more automated and convenient.

[0041] Furthermore, the inhalation channel 32 of the auxiliary component 3 can establish a connecting channel between the chamber 21 and the mouthpiece 1, allowing the mouthpiece 1 to also supply powder to each chamber 21 without the need for additional parts to connect the chamber 21 to the mouthpiece 1, or without the need for additional mechanisms to switch the mouthpiece 1 to connect with a new chamber 21, thus simplifying the overall structure. The multi-dose powder inhaler 100 of this application can improve powder delivery efficiency while achieving multi-dose supply, simplifying the overall structure and making operation more convenient and automated.

[0042] In one implementation, such as Figure 1 and Figure 5 As shown, the opening of compartment 21 is sealed by sealing element 22. Compartment 21 is used to directly store powder, and sealing element 22 is used to keep compartment 21 sealed. Sealing element 22 can be a sealing film. Figure 1 and Figure 4 As shown, the auxiliary component 3 is also provided with a puncture structure 33. During the process of the auxiliary component 3 switching to the next chamber 21, the puncture structure 33 punctures the sealing element 22, so that the airflow channel 31 and the inhalation channel 32 can be connected to the chamber 21 respectively, so that the user can inhale smoothly.

[0043] Furthermore, such as Figure 1As shown, after the puncture structure 33 punctures the sealing element 22, the auxiliary component 3 seals the opening end of the chamber 21. In this way, on the one hand, the auxiliary component 3 can also prevent the powder in the chamber 21 from flying out of the opening end of the chamber 21 randomly, so that the powder in the chamber 21 flows to the suction nozzle 1 along a defined path, ensuring that the powder in the chamber 21 enters the suction nozzle 1 through the suction channel 32. On the other hand, it can also ensure that all the gas introduced by the airflow channel 31 enters the chamber 21, improving the cyclone effect.

[0044] Furthermore, such as Figure 1 and Figure 3 As shown, the auxiliary component 3 is also provided with a cover 34; after the piercing structure 33 pierces the sealing element 22, the cover 34 covers the end face of the opening end of the compartment 21, thereby sealing the opening end of the compartment 21. Preferably, the cover 34 is a cover structure, and the cover 34 covers the outer periphery of the opening end of the compartment 21. This solution helps to reduce the processing accuracy requirements of the side surface of the cover 34 facing the storage compartment 2. In a specific embodiment, the inner wall of the end of the cover 34 facing the storage compartment 2 is circular with an inner diameter of d1, and the maximum inner diameter of the compartment 21 is d2, where d1 > d2.

[0045] In one implementation, such as Figure 1 and Figure 12 As shown, one of the storage compartment 2 and the auxiliary component 3 can rotate relative to the other around a first axis, so that the auxiliary component 3 can switch from the current compartment 21 to a position relative to the next compartment 21. This can be either the storage compartment 2 rotating relative to the auxiliary component 3, or the auxiliary component 3 rotating relative to the storage compartment 2. In this design, the rotation method requires less space than the translation method, which is beneficial for the miniaturization design of the multi-dose powder inhaler 100.

[0046] Furthermore, such as Figure 5 and Figure 6 As shown, multiple compartments 21 are arranged in a circular array around a first axis, and the compartments 21 are distributed along the movement paths of the rotating components in the storage compartment 2 and auxiliary component 3. Preferably, all compartments 21 are arranged in a circular array, so that the angle of a single rotation is constant, which is convenient for user operation.

[0047] In one implementation, such as Figure 1As shown, when the auxiliary component 3 is in communication with the chamber 21, at least one of the airflow channel 31 and the suction channel 32 extends at least partially into the corresponding chamber 21. If the airflow channel 31 extends partially into the corresponding chamber 21, the airflow in the airflow channel 31 can immediately flow tangentially along the wall of the chamber 21 upon exiting, ensuring a cyclone effect. If the suction channel 32 extends partially into the corresponding chamber 21, the inlet end of the suction channel 32 is closer to the cyclone center, improving the suction efficiency of fine particulate powder. Preferably, both the airflow channel 31 and the suction channel 32 extend partially into the corresponding chamber 21.

[0048] In addition, such as Figure 1 and Figure 12 As shown, since the auxiliary component 3 partially extends into the corresponding compartment 21, when the auxiliary component 3 needs to switch to the next compartment 21, it needs to first exit from the current compartment 21 and then extend into the next compartment 21. Therefore, the distance between the auxiliary component 3 and the storage compartment 2 in the extension direction of the first axis needs to change accordingly. In this solution, during the rotation of one of the storage compartment 2 and the auxiliary component 3 relative to the other, the storage compartment 2 and the auxiliary component 3 can also undergo relative displacement along the first axis, so that the auxiliary component 3 can exit the current compartment 21 and then extend into the next compartment 21. Here, "the storage compartment 2 and the auxiliary component 3 can also undergo relative displacement along the first axis" can mean that the storage compartment 2 is displaced relative to the auxiliary component 3 along the first axis, or that the auxiliary component 3 is displaced relative to the storage compartment 2 along the first axis, or that both the storage compartment 2 and the auxiliary component 3 are displaced along the first axis. Specifically, the storage compartment 2 and the auxiliary component 3 are displaced relative to each other along the first axis to increase the distance between them, thereby allowing the auxiliary component 3 to exit the current compartment 21. When the auxiliary component 3 switches to the position of the next compartment 21, the storage compartment 2 and the auxiliary component 3 are displaced relative to each other along the first axis to reduce the distance between them, thereby allowing the auxiliary component 3 to extend into the compartment 21.

[0049] Furthermore, such as Figure 1 As shown, the multi-dose powder inhaler 100 also includes a mounting member 4, to which the auxiliary member 3 is fixedly mounted. The relative movement of the storage compartment 2 and the auxiliary member 3 includes, but is not limited to, the following methods: Method (1): The storage compartment 2 is rotatably arranged and the mounting part 4 is movable along the first axis. By rotating the storage compartment 2, the next compartment 21 is positioned opposite the auxiliary part 3, and the mounting part 4 drives the auxiliary part 3 to move along the first axis, allowing the auxiliary part 3 to exit the current compartment 21 (the old compartment 21). Then, when the auxiliary part 3 is positioned opposite the next compartment 21 (the new compartment 21), the mounting part 4 drives the auxiliary part 3 to move in the opposite direction along the first axis, allowing the auxiliary part 3 to extend into the compartment 21. It should be explained that in this solution, when the storage compartment 2 rotates, the mounting part 4 and the auxiliary part 3 cannot rotate; they can only move along the first axis. Thus, the multi-dose powder inhaler 100 can be equipped with a guide (not shown in the figure), and the mounting part 4 is movably mounted on this guide along the first axis, preventing the mounting part 4 from driving the auxiliary part 3 to rotate.

[0050] Method (2): The mounting component 4 is rotatably mounted and the storage chamber 2 is movable along the first axis. Thus, the mounting component 4 drives the auxiliary component 3 to rotate, causing the auxiliary component 3 to rotate to a position opposite to the next chamber 21. The storage chamber 2 then moves along the first axis, causing the current chamber 21 to disengage from the auxiliary component 3. Then, when the auxiliary component 3 is opposite to the next chamber 21 (the new chamber 21), the storage chamber 2 moves in the opposite direction along the first axis, causing the new chamber 21 to approach the auxiliary component 3, allowing the auxiliary component 3 to extend into the chamber 21. It should be explained that in this solution, when the mounting component 4 drives the auxiliary component 3 to rotate, the storage chamber 2 cannot rotate; it can only move along the first axis. Thus, the multi-dose powder inhaler 100 can be equipped with a guide (not shown in the figure), and the storage chamber 2 is movably mounted on this guide along the first axis, preventing the storage chamber 2 from rotating.

[0051] Method (3): The mounting part 4 and the storage compartment 2 are slidably engaged along the first axis and the mounting part 4 and the storage compartment 2 can rotate relative to each other. That is, the user can hold the storage compartment 2 with one hand to keep the storage compartment 2 stationary, and rotate the mounting part 4 with the other hand, so that the mounting part 4 drives the auxiliary part 3 to rotate and will also be displaced along the first axis during the rotation, so that the auxiliary part 3 can exit the current compartment 21 and can be inserted into the next compartment 21 (new compartment 21) when it is in a position relative to the next compartment 21. Alternatively, the user can hold the mounting part 4 with one hand to keep the mounting part 4 and the auxiliary part 3 stationary, and rotate the storage compartment 2 with the other hand, so that the storage compartment 2 rotates and will also be displaced along the first axis during the rotation, so that the auxiliary part 3 can exit the current compartment 21 and can be inserted into the next compartment 21 (new compartment 21) when it is in a position relative to the next compartment 21.

[0052] In one implementation, such as Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, the storage compartment 2 is provided with a first guide structure 23, and the mounting component 4 is provided with a second guide structure 41. During the process of one of the storage compartment 2 and the auxiliary component 3 rotating relative to the other, the first guide structure 23 and the second guide structure 41 cooperate to guide the storage compartment 2 and the auxiliary component 3 to undergo relative displacement along the first axis.

[0053] Furthermore, such as Figure 2 , Figures 5 to 7 As shown, the first guide structure 23 includes a ratchet groove 231 and a lifting portion 232, and the second guide structure 41 is a ratchet. When the opening of the ratchet groove 231 faces upward, the lowest point of the ratchet groove 231 is lower than the lowest point of the lifting portion 232. When the auxiliary component 3 is in communication with the compartment 21, the second guide structure 41 engages with the corresponding ratchet groove 231. During the rotation of the storage compartment 2 and the auxiliary component 3 relative to the other, the second guide structure 41 disengages from the ratchet groove 231 and abuts against the lifting part 232. In this way, by utilizing the height difference between the ratchet groove 231 and the lifting part 232 in the extension direction of the first axis, the distance between the auxiliary component 3 and the storage compartment 2 in the extension direction of the first axis increases, thereby enabling the auxiliary component 3 to exit the current compartment 21 until the second guide structure 41 engages with the next ratchet groove 231. As the second guide structure 41 falls into the next ratchet groove 231, the distance between the auxiliary component 3 and the storage compartment 2 in the extension direction of the first axis decreases, thereby enabling the auxiliary component 3 to extend into the next compartment 21. In this solution, the ratchet groove 231 and the second guide structure 41 (ratchet) work together to ensure that one of the storage compartments 2 and the auxiliary component 3 can only rotate in one direction relative to the other, so as to ensure that the user can use the powder stored in each compartment 21 accurately and orderly.

[0054] Preferably, such as Figure 2 As shown, the mounting component 4, facing the storage compartment 2, also includes a mating surface 47. A second guide structure 41 extends from the mating surface 47 towards the storage compartment 2. When the second guide structure 41 engages with the corresponding ratchet groove 231, the lifting portion 232 abuts against the mating surface 47 to improve the stability of the device. Figure 10 and Figure 12 As shown, when the second guide structure 41 abuts against the lifting part 232, there is a gap 8 between the mating surface 47 and the lifting part 232.

[0055] Specifically, for ease of explanation, we will take the example of mounting component 4 being located above storage compartment 2, where ratchet groove 231 is lower than lifting portion 232. For example... Figure 1 , Figure 2 , Figure 6 , Figures 8 to 12As shown, the cooperation between the first guide structure 23 and the second guide structure 41 varies depending on the relative movement between the storage compartment 2 and the auxiliary component 3: Regarding the above method (1): The storage compartment 2 is rotatably arranged and the mounting part 4 is movable along the first axis. When the storage compartment 2 is in the initial state, the second guide structure 41 engages with the corresponding ratchet groove 231. At this time, the mounting part 4 is in the first low position in the extension direction of the first axis, and the distance between the mounting part 4 and the storage compartment 2 in the extension direction of the first axis is H1. During the process of the user rotating the storage compartment 2, the guide slope 2311 of the ratchet groove 231 pushes the second guide structure 41, causing the second guide structure 41 to move upward. At this time, the mounting part 4 drives the auxiliary part 3 to move upward until the second guide structure 41 disengages from the ratchet groove 231 and engages with the lifting part 232. At this point, the mounting component 4 is in the first high position in the extension direction of the first axis, and the distance between the mounting component 4 and the storage compartment 2 in the extension direction of the first axis is H2, where H2 > H1. As the storage compartment 2 continues to rotate, the next ratchet groove 231 rotates to a position below the second guide structure 41, and then the second guide structure 41 falls into the ratchet groove 231 and the two remain engaged. At this point, the mounting component 4 returns to the first low position. The mounting component 4 can return to the first low position under the action of gravity, or it can be manually pressed by the user to return to the first low position. The distance between the mounting component 4 and the storage compartment 2 in the extension direction of the first axis is H1, and the auxiliary component 3 extends into the new compartment 21.

[0056] Regarding the above method (2): The mounting component 4 is rotatably set and the storage compartment 2 is movable along the first axis. When the storage compartment 2 is in the initial state, the second guide structure 41 engages with the corresponding ratchet groove 231. At this time, the storage compartment 2 is in the second highest position in the extension direction of the first axis. The distance between the mounting component 4 and the storage compartment 2 in the extension direction of the first axis is H1. During the process of the user rotating the mounting component 4, the second guide structure 41 pushes the guide slope 2311 of the ratchet groove 231, so that the guide slope 2311 of the ratchet groove 231 slides along the second guide structure 41. At this time, the storage compartment 2 moves downward until the ratchet groove 231 disengages from the second guide structure 41, and then the lifting part... 232 abuts against the second guide structure 41. At this time, the storage compartment 2 is in the second lowest position in the extension direction of the first axis. The distance between the mounting part 4 and the storage compartment 2 in the extension direction of the first axis is H2, H2>H1. As the mounting part 4 continues to rotate, the second guide structure 41 moves to the top of the next ratchet groove 231. Then the storage compartment 2 moves upward so that the ratchet groove 231 engages with the second guide structure 41. At this time, the storage compartment 2 returns to the second highest position. The storage compartment 2 can return to the second highest position under external force (such as spring force or manual pushing force). The distance between the mounting part 4 and the storage compartment 2 in the extension direction of the first axis is H1. The auxiliary part 3 extends into the new compartment 21.

[0057] Regarding the above method (3): The mounting component 4 and the storage compartment 2 are slidably engaged along the first axis and can rotate relative to each other. If the user holds the storage compartment 2 with one hand and rotates the mounting component 4 with the other, the second guide structure 41 climbs up the guide slope 2311 of the ratchet groove 231. During this stage, the mounting component 4 drives the auxiliary component 3 to spiral upward until the second guide structure 41 disengages from the ratchet groove 231 and abuts against the lifting part 232. The mounting component 4 is at the first high position in the extension direction of the first axis. Then, the mounting component 4 drives the auxiliary component 3 to continue rotating until the second guide structure 41 rotates to the top of the next ratchet groove 231. The mounting component 4 drives the auxiliary component 3 to move downward until the second guide structure 41 is engaged with the new ratchet groove 231. The auxiliary component 3 completes the position switch. The device extends into the new chamber 21 to await suction. If the user holds the mounting piece 4 with one hand and rotates the storage chamber 2 with the other, the guide ramp 2311 of the ratchet groove 231 slides along the second guide structure 41. During this stage, the storage chamber 2 spirals down until the ratchet groove 231 disengages from the second guide structure 41 and the lifting part 232 abuts against the second guide structure 41. The storage chamber 2 is in the second lowest position in the extension direction of the first axis. Then, the storage chamber 2 continues to rotate until the next ratchet groove 231 rotates to the bottom of the second guide structure 41. The storage chamber 2 moves up so that the ratchet groove 231 engages with the second guide structure 41, and the guide ramp 2311 of the ratchet groove 231 slides along the second guide structure 41. The auxiliary piece 3 completes the position switch and extends into the new chamber 21 to await suction.

[0058] To simplify the structure and operation of the multi-dose powder inhaler 100, one of the mounting component 4 and the storage chamber 2 is stationary, while the other moves. In one embodiment, when an external force rotates the mounting component 4, the mounting component 4 causes the auxiliary component 3 to rotate relative to the storage chamber 2, and with the cooperation of the first guide structure 23 and the second guide structure 41, the mounting component 4 causes the auxiliary component 3 to displace along the first axis. In another embodiment, when an external force rotates the storage chamber 2, the storage chamber 2 rotates relative to the mounting component 4, and with the cooperation of the first guide structure 23 and the second guide structure 41, the storage chamber 2 displaces along the first axis.

[0059] In one implementation, such as Figure 2 , Figure 5 and Figure 6 As shown, the number of first guide structures 23 and chambers 21 is equal to ensure that the auxiliary component 3 can connect to each chamber 21 sequentially by switching positions. There is one second guide structure 41, which guides the relative displacement of the storage chamber 2 and the auxiliary component 3 along the first axis, while minimizing the friction between the first guide structure 23 and the second guide structure 41, so that the user can easily operate the multi-dose powder inhaler 100.

[0060] In one implementation, such as Figure 1 , Figure 2 , Figure 6 and Figure 12 As shown, the mounting component 4 has a connected protrusion 42 and a limiting block 43, and the storage compartment 2 has a connected through hole 24 and a chamber 25. The lateral dimension of the chamber 25 is larger than the lateral dimension of the through hole 24. The protrusion 42 passes through the through hole 24, and the limiting block 43 is located in the chamber 25. The limiting block 43 is used to prevent the protrusion 42 from disengaging from the through hole 24. The protrusion 42 is slidably engaged with the through hole 24 and / or the limiting block 43 is slidably engaged with the chamber 25, so that the mounting component 4 and the storage compartment 2 are slidably engaged along the first axis, allowing the mounting component 4 and the storage compartment 2 to undergo relative displacement along the first axis. Furthermore, by limiting the assembly relationship between the limiting block 43 and the chamber 25, the protrusion 42 cannot disengage from the through hole 24, thereby preventing the mounting component 4 from disengaging from the storage compartment 2, and also simplifying the structure of the multi-dose powder inhaler 100. In addition, the sliding engagement between the protrusion 42 and the through hole 24 and / or the sliding engagement between the limiting block 43 and the chamber 25 can also prevent relative displacement between the mounting part 4 and the storage compartment 2 in other directions, such as preventing relative displacement between the mounting part 4 and the storage compartment 2 in a direction perpendicular to the first axis.

[0061] Furthermore, such as Figure 1 and Figure 6 As shown, the chamber 25 has a concave cavity structure. The limiting block 43 can be a structure with a certain deformation capability. During the process of assembling the limiting block 43 into the chamber 25, the limiting block 43 deforms, shrinks in size, passes through the through hole 24, and enters the chamber 25. Then, the limiting block 43 returns to its original shape. During the relative movement between the mounting part 4 and the storage compartment 2, the external force is insufficient to cause the limiting block 43 to deform sufficiently and detach from the through hole 24, thereby ensuring that the protrusion 42 cannot detach from the through hole 24. Of course, the chamber 25 can also be a through hole structure (not shown in the figure). The protrusion 42 and the limiting block 43 are detachably connected. The limiting block 43 is inserted into the chamber 25 from the end away from the through hole 24, and then the limiting block 43 is assembled with the protrusion 42.

[0062] In one implementation, such as Figure 1 As shown, before the first use of the multi-dose powder inhaler 100, the current chamber 21 into which the auxiliary component 3 extends is empty. Specifically, since the auxiliary component 3 needs to be partially inserted into the chamber 21 when the multi-dose powder inhaler 100 is not used, the storage chamber 2 needs to be configured with an empty chamber to allow the auxiliary component 3 to extend into it before the first use of the multi-dose powder inhaler 100. Preferably, to save costs, the empty chamber is not equipped with a sealing element 22. In one specific embodiment, as... Figure 1 and Figure 2As shown, there are eight compartments 21, one of which is empty, and seven sealing elements 22. This can meet the user's needs for a week for a daily requirement. Of course, the size and number of compartments 21 can be adjusted according to different frequency requirements.

[0063] In one implementation, such as Figure 1 and Figure 4 As shown, at least one of the airflow channel 31 and the inhalation channel 32 has a pointed end facing the storage chamber 2, forming a puncture structure 33. During the insertion of the auxiliary component 3 into the corresponding chamber 21, the puncture structure 33 punctures the sealing element 22. Specifically, when the auxiliary component 3 switches to a new chamber 21, there is an insertion action into that chamber 21. This solution utilizes the insertion action of the auxiliary component 3 to directly place the puncture structure 33 on one end of the airflow channel 31 and / or the inhalation channel 32, eliminating the need for additional puncture elements and reducing the number of parts. Furthermore, if additional puncture elements are provided, additional matching components are required to ensure that the puncture elements can provide puncture for each chamber 21. This solution effectively simplifies the structure of the multi-dose powder inhaler 100.

[0064] Furthermore, such as Figure 3 and Figure 4 As shown, the puncture structure 33 includes a first puncture structure 331 and a second puncture structure 332. The first puncture structure 331 is formed at one end of the airflow channel 31 facing the storage chamber 2, and the second puncture structure 332 is formed at one end of the suction channel 32 facing the storage chamber 2. Thus, during the process of the auxiliary component 3 extending into the corresponding chamber 21, the first puncture structure 331 tangentially punctures the sealing element 22, and the second puncture structure 332 vertically punctures the sealing element 22, thereby improving the puncture efficiency. When the auxiliary component 3 completes the position switching, both the first puncture structure 331 and the second puncture structure 332 are in the corresponding chamber 21.

[0065] In one implementation, such as Figure 1 and Figure 14 As shown, the multi-dose powder inhaler 100 also includes a base 5 and a protective cover 6. The mouthpiece 1 and the auxiliary component 3 are respectively installed on the mounting component 4. If the mounting component 4 moves, the mouthpiece 1 and the auxiliary component 3 move synchronously with the mounting component 4. The storage compartment 2 is installed on the base 5. The base 5 and the protective cover 6 together form a cavity 7. The mouthpiece 1, the storage compartment 2, and the auxiliary component 3 are all located in the cavity 7. The protective cover 6 is used to prevent dust and dirt, ensuring cleanliness and hygiene. Figure 8 As shown, before using the multi-dose powder inhaler 100, the protective cover 6 should be removed. Preferably, in a configuration where the storage compartment 2 is rotatably mounted, the user can manually rotate the base 5 to drive the storage compartment 2 to rotate. Further, as... Figure 2 , Figure 13 and Figure 14 As shown, in order to make it easier for users to hold the base 5, the outer peripheral wall of the base 5 is provided with anti-slip protrusions 52. In order to make it easier for users to grasp the rotation direction, the outer wall of the base 5 is provided with operation indicator marks 53. The operation indicator marks 53 can be arrows or text to indicate the rotation direction to the user and make it easier for the user to operate.

[0066] Furthermore, such as Figure 1 and Figure 13 As shown, the base 5 has a recess 51, and the storage chamber 2 is embedded in the recess 51 without relative movement between them. The storage chamber 2 and the recess 51 can be fixed by interference fit or adhesive bonding. The storage chamber 2 can be completely embedded in the recess 51, and the depth of the recess 51 is greater than the height of the storage chamber 2, so that the mounting member 4 can partially extend into the recess 51 with a clearance fit. In this way, the recess 51 can also prevent the mounting member 4 from displacing in a direction perpendicular to the first axis. Preferably, the assembly method of the base 5 and the storage chamber 2 is detachable. In this way, when the dosage of the storage chamber 2 is exhausted, a new storage chamber 2 can be replaced, and the multi-dose powder inhaler 100 can continue to be used, reducing the cost of use.

[0067] Furthermore, such as Figure 2 and Figure 13 As shown, the bottom wall of the cavity 51 is provided with multiple mounting slots 511, and the bottom of the storage compartment 2 is provided with multiple mounting posts 26. The mounting posts 26 are inserted into the mounting slots 511 one by one to install the storage compartment 2 on the base 5. The mounting posts 26 and the mounting slots 511 can be fixed by interference fit or adhesive bonding.

[0068] In one implementation, such as Figure 1 and Figure 7 As shown, the mounting component 4 has an annular groove 44 and a mounting hole 45. One end of the suction nozzle 1 is inserted into the annular groove 44, and the outlet end of the suction channel 32 of the auxiliary component 3 is installed in the mounting hole 45. The suction nozzle 1 and the annular groove 44 can be fixed together by interference fit or adhesive bonding, and the outlet end of the suction channel 32 and the mounting hole 45 can be fixed together by interference fit or adhesive bonding. Of course, the suction nozzle 1 and the mounting component 4 can also be integrally formed.

[0069] Furthermore, such as Figure 1 and Figure 7As shown, the end of the suction nozzle 1 facing the mounting part 4 is provided with an annular extending rib 11 and an annular abutment surface 12. The end face of the suction channel 32 and the mounting hole 45 facing the suction nozzle 1 are flush. The annular extending rib 11 is inserted into the annular groove 44. The end of the suction channel 32 abuts against the annular abutment surface 12. The inner wall of the end of the suction channel 32 and the inlet end of the suction nozzle 1 have the same shape and size, and they are directly opposite each other. The structure of the connection between the suction nozzle 1 and the suction channel 32 is optimized, so as to minimize the residue of powder caused by collision at this place.

[0070] In one implementation, such as Figure 7 and Figure 8 As shown, the mounting component 4 is also provided with an air inlet 46. One end of the air inlet 46 is used to communicate with the outside, and the other end is connected to the airflow inlet 311 of the airflow channel 31. When the user holds the mouthpiece 1 in their mouth and inhales, the airflow from the outside passes through the air inlet 46, the airflow inlet 311, the internal channel of the airflow channel 31, and the airflow outlet 312 in sequence before entering the chamber 21 tangentially. In one specific embodiment, after the protective cover 6 is removed, one end of the air inlet 46 is connected to the outside, thereby connecting the airflow inlet 311 of the airflow channel 31 to the outside of the multi-dose powder inhaler 100.

[0071] In one implementation, such as Figure 1 As shown, the chamber 21 is hemispherical, and the air outlet 312 of the airflow channel 31 extends tangentially along the chamber 21. Thus, when the airflow in the airflow channel 31 flows tangentially into the chamber 21 through the air outlet 312, the airflow will spiral downward along the inner wall of the chamber 21, causing the powder at the bottom of the chamber 21 to rotate and rise. During this process, the powder will continuously collide and disperse, and the dispersed powder will flow to the suction nozzle 1 through the suction channel 32.

[0072] In one implementation, such as Figure 1 As shown, the central axis of the suction channel 32 coincides with the central axis of the chamber 21, which optimizes the flow path of the powder, reduces powder residue in the chamber 21, and improves the efficiency of powder conveying from the chamber 21 to the suction channel 32.

[0073] In one implementation, such as Figure 1 and Figure 3 As shown, the chamber 21 is hemispherical, and the central axis of the suction channel 32 coincides with the center of the chamber 21. The airflow channel 31 extends spirally around the central axis of the suction channel 32. The airflow channel 31 can guide the airflow to flow in a spiral manner to form a spiral airflow. The outflow direction of the airflow can be pre-adjusted to a circumferential direction that is approximately tangent to the chamber 21, so that more airflows can flow along the tangential direction of the chamber 21 to improve the powder delivery efficiency.

[0074] In one implementation, such as Figure 1 and Figure 2 As shown, a screen 35 is provided in the suction channel 32, and the screen 35 does not move relative to the suction channel 32. When the powder in the chamber 21 enters the suction channel 32, it passes through the screen 35, and the powder further collides and disperses with the screen 35, increasing the content of fine powder particles.

[0075] The following describes the usage steps of the multi-dose powder inhaler 100, with the base 5 located below the mounting component 4 and only the base 5 being rotated during use: S1. Hold the base 5 with one hand and remove the protective cover 6 with the other hand; S2. Hold the mounting part 4 with one hand, keeping the mounting part 4, auxiliary part 3 and nozzle 1 still. Rotate the base 5. The base 5 drives the storage compartment 2 to rotate. With the cooperation of the first guide structure 23 and the second guide structure 41, the base 5 and the storage compartment 2 first spiral down, so that the auxiliary part 3 can exit from the corresponding compartment 21. Then rotate synchronously, so that the auxiliary part 3 can switch to align with the next compartment 21. Then rise synchronously, so that the auxiliary part 3 can pierce and extend into the new compartment 21. S3. The user holds the outlet end of the nozzle 1 in their mouth and inhales forcefully to inhale the powder; S4. After inhalation, install the protective shield 6.

[0076] 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 multi-dose powder aerosol inhaler characterised in that, The multi-dose powder inhaler (100) includes: Suction nozzle (1); Storage compartment (2), which includes multiple compartments (21) for storing powder; The auxiliary component (3) includes a separately provided airflow channel (31) and a suction channel (32), the suction channel (32) being connected to the nozzle (1), and the airflow channel (31) and the suction channel (32) being connected to the chamber (21) respectively; When the auxiliary component (3) is in communication with the chamber (21), the airflow channel (31) is used to guide the gas tangentially into the chamber (21), and the suction channel (32) is used to allow the powder in the chamber (21) to pass through and enter the nozzle (1); The storage compartment (2) and the auxiliary component (3) move relative to each other so that the auxiliary component (3) switches from the current compartment (21) to the next compartment (21); The opening of the compartment (21) is sealed by a sealing element (22); The auxiliary component (3) is also provided with a puncture structure (33), which punctures the sealing element (22) during the process of the auxiliary component (3) switching to the next compartment (21).

2. A multi-dose powder inhaler according to claim 1, wherein, After the puncture structure (33) punctures the sealing element (22), the auxiliary component (3) seals the opening of the chamber (21).

3. A multi-dose powder inhaler according to claim 2, wherein, The auxiliary component (3) is also provided with a cover (34); after the piercing structure (33) pierces the sealing element (22), the cover (34) covers the end face of the opening end of the compartment (21).

4. The multi-dose powder inhaler of claim 1, wherein, One of the storage compartment (2) and the auxiliary component (3) can rotate relative to the other about a first axis, so that the auxiliary component (3) switches from the current compartment (21) to a position relative to the next compartment (21).

5. The multi-dose powder inhaler according to claim 4, characterized in that, The multiple compartments (21) are arranged in a circular array around the first axis.

6. The multi-dose powder inhaler according to claim 4, characterized in that, When the auxiliary component (3) is in communication with the chamber (21), at least one of the airflow channel (31) and the suction channel (32) extends at least partially into the corresponding chamber (21); During the rotation of one of the storage compartment (2) and the auxiliary component (3) relative to the other, the storage compartment (2) and the auxiliary component (3) can also be displaced relative to each other along the first axis, so that the auxiliary component (3) can exit the current compartment (21) and then extend into the next compartment (21).

7. A multi-dose powder inhaler according to claim 6, wherein, The multi-dose powder inhaler (100) also includes a mounting component (4), to which the auxiliary component (3) is inremovably mounted; The storage compartment (2) is rotatably disposed and the mounting component (4) is movably disposed along the first axis, or the mounting component (4) is rotatably disposed and the storage compartment (2) is movably disposed along the first axis, or the mounting component (4) and the storage compartment (2) are slidably engaged along the first axis and the mounting component (4) and the storage compartment (2) can rotate relative to each other.

8. A multi-dose powder inhaler according to claim 7, wherein, The storage compartment (2) is provided with a first guide structure (23), and the mounting component (4) is provided with a second guide structure (41). During the rotation of one of the storage compartment (2) and the auxiliary component (3) relative to the other, the first guide structure (23) cooperates with the second guide structure (41) to guide the storage compartment (2) and the auxiliary component (3) to undergo relative displacement along the first axis.

9. A multi-dose powder inhaler according to claim 8, wherein, The first guide structure (23) includes a ratchet groove (231) and a lifting part (232), and the second guide structure (41) is a ratchet; when the auxiliary part (3) is in communication with the compartment (21), the second guide structure (41) engages with the corresponding ratchet groove (231); During the rotation of one of the storage compartments (2) and the auxiliary component (3) relative to the other, the second guide structure (41) disengages from the ratchet groove (231) and abuts against the lifting part (232), allowing the auxiliary component (3) to exit the current compartment (21) until the second guide structure (41) engages with the next ratchet groove (231), and the auxiliary component (3) extends into the next compartment (21).

10. A multi-dose powder inhaler according to claim 9, wherein, When the external force rotates the mounting part (4), the mounting part (4) drives the auxiliary part (3) to rotate relative to the storage compartment (2), and with the cooperation of the first guide structure (23) and the second guide structure (41), the mounting part (4) drives the auxiliary part (3) to move along the first axis. Alternatively, when an external force rotates the storage compartment (2), the storage compartment (2) rotates relative to the mounting component (4), and with the cooperation of the first guide structure (23) and the second guide structure (41), the storage compartment (2) is displaced along the first axis.

11. A multi-dose powder inhaler according to claim 9, wherein, The number of the first guide structure (23) is equal to the number of the compartments (21), and the number of the second guide structure (41) is one.

12. A multi-dose powder inhaler according to claim 7, wherein, The mounting component (4) is provided with a connected protrusion (42) and a limiting block (43), and the storage compartment (2) is provided with a connected through hole (24) and a chamber (25). The protrusion (42) passes through the through hole (24), and the limiting block (43) is located in the chamber (25). The limiting block (43) is used to prevent the protrusion (42) from separating from the through hole (24). The protruding post (42) slides into the through hole (24) and / or the limiting block (43) slides into the chamber (25) so that the mounting member (4) and the storage compartment (2) slide into each other along the first axis.

13. The multi-dose powder inhaler of claim 6, wherein, Before the first use of the multi-dose powder inhaler (100), the current chamber (21) into which the accessory (3) extends is empty; Alternatively, the opening of the chamber (21) is sealed by a sealing element (22); at least one of the airflow channel (31) and the suction channel (32) has a pointed end facing the storage chamber (2) to form a puncture structure (33); during the process of the auxiliary member (3) extending into the corresponding chamber (21), the puncture structure (33) punctures the sealing element (22).

14. A multi-dose powder inhaler according to any one of claims 1 to 13, wherein, The multi-dose powder inhaler (100) also includes a mounting component (4), a base (5), and a protective cover (6). The mouthpiece (1) and the auxiliary component (3) are respectively mounted on the mounting component (4), and the storage compartment (2) is mounted on the base (5). The base (5) and the protective cover (6) together form a cavity (7). The mouthpiece (1), the storage compartment (2), and the auxiliary component (3) are all located in the cavity (7). And / or, the compartment (21) is hemispherical, and the air outlet (312) of the airflow channel (31) extends tangentially along the compartment (21); And / or, the airflow inlet (311) of the airflow channel (31) can be connected to the outside of the multi-dose powder inhaler (100); And / or, the central axis of the inhalation channel (32) coincides with the central axis of the chamber (21); And / or, the chamber (21) is hemispherical, the central axis of the intake channel (32) coincides with the center of the chamber (21), and the airflow channel (31) extends spirally around the central axis of the intake channel (32); And / or, the inhalation channel (32) is provided with a screen (35); And / or, when the auxiliary component (3) moves, the suction nozzle (1) moves synchronously with it.

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