quasi-nanometer device

Abstract

This invention relates to an inhaler, comprising: a housing having a cavity, a first clearance through-hole, and a mouthpiece; a protective cap rotatably connected to the outside of the housing, and having an actuator on its inner wall; a main wheel rotatably connected to the inside of the housing, and including a first gear portion and an eccentrically positioned protrusion extending out of the first clearance through-hole; and a drug dispensing assembly cooperating with the first gear portion. When the inhaler is in its initial state, the protective cap covers the outlet end of the mouthpiece, and the protrusion is in its initial position. When the protective cap rotates under external force to expose the mouthpiece, the actuator rotates to abut against the protrusion, and the actuator pushes the main wheel to a trigger position to trigger the drug dispensing assembly to dispense the drug, thus putting the inhaler in a drug delivery ready state. The inhaler of this invention allows the main wheel to rotate simultaneously with opening the protective cap, completing both the opening of the protective cap and the preparation for inhalation in a single action. This makes operation convenient and avoids ineffective drug delivery and drug waste.

Description

Technical Field

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

[0002] Oral inhalation is a drug delivery method that requires the cooperation of both the drug and the device, and it is an important route of administration for the treatment of a variety of diseases, including those affecting the lungs and the whole body. GlaxoSmithKline's Advair Diskus inhaler (fluticasone propionate and salmeterol inhalation powder) is one of the most commonly used inhalers for the treatment of asthma and chronic obstructive pulmonary disease.

[0003] The steps for using an inductor are generally as follows:

[0004] 1) Open the outer cover: Hold the cover with one hand, place the thumb of the other hand on the thumb handle, and push the thumb outward until the cover is fully open;

[0005] 2) Prepare to inhale: Hold the inhaler with the mouthpiece facing you, and push the sliding lever outward until a click is heard, triggering the opening of the vesicles;

[0006] 3) Inhalation: Hold the inhaler away from your mouth, exhale as much as possible while maintaining steady breathing, place the mouthpiece into your mouth, and inhale the medication deeply and steadily through the inhaler. Remove the inhaler from your mouth; continue to hold your breath for about 10 seconds; slowly resume exhalation.

[0007] 4) Closing device: Place your thumb on the thumb handle and pull back as quickly as possible. When the detector is closed, a click sound indicates that it is closed.

[0008] 5) Rinse your mouth: Do not swallow the mouthwash after inhaling.

[0009] For patients, in addition to the ease of use of the inhaler, ensuring correct medication administration is crucial. Before inhalation, two steps are required: opening the inhaler and preparing for inhalation. Only by correctly completing these two steps can the subsequent inhalation of the medication powder be guaranteed. The main function of the inhaler cap is to protect the mouthpiece and sliding lever of the device. This prevents the mouthpiece from becoming contaminated due to environmental exposure and prevents the sliding lever from sliding when not in use. When the sliding lever is fully moved to the end position, the empty vesicle moves away from the mouthpiece, simultaneously moving a new vesicle filled with medication powder to a position directly opposite the mouthpiece cavity, preparing for inhalation.

[0010] For example, in patent US5590645, the device's startup steps (opening and preparation) are relatively complex and cumbersome to operate. Moreover, patients are prone to misoperation during device use. If the user starts inhaling without moving the slider, the vesicles in the drug delivery position will be empty vesicles from the previous use, resulting in ineffective drug delivery. If the user misoperates and moves the slider multiple times, the opened vesicles inside the device will move with the drug strip, and the drug powder will still be stored in the vesicles, resulting in drug powder contamination and waste.

[0011] In summary, due to the relatively complex structure of the inhaler device, errors can easily occur during the opening and preparation of the device, which can directly affect the subsequent inhalation process, leading to drug delivery failure or incomplete drug delivery and reducing drug delivery efficiency. Summary of the Invention

[0012] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an induction device that is easy to operate and can avoid ineffective drug administration and drug waste.

[0013] Therefore, the present invention provides the following technical solution.

[0014] This invention provides a quasi-input device, the quasi-input device comprising:

[0015] The outer casing has a cavity, a first clearance through-hole, and a suction nozzle;

[0016] A protective cover is rotatably connected to the outer shell, and its inner wall is provided with an actuator;

[0017] The main wheel is rotatably connected to the housing and includes a first gear portion and an eccentrically arranged protrusion, the protrusion extending out of the first clearance through hole;

[0018] A drug dispensing assembly that engages with the first gear section;

[0019] When the absorber is in its initial state, the protective cover covers the outlet end of the nozzle, and the protrusion is in its initial position.

[0020] When the protective cover is rotated under external force to expose the nozzle, the actuator rotates to abut against the protrusion, and the actuator pushes the main wheel to rotate to the trigger position to trigger the drug dispensing assembly to dispense the drug, so that the inhaler is in a ready-to-administer state.

[0021] Preferably, the inner wall of the protective cover is provided with a limiting member, which limits the protrusion to the initial position when the accumulator is in the initial state.

[0022] Preferably, the limiting member is a protrusion;

[0023] When the admittance device is in its initial state, the limiting member presses the protrusion against the first end of the first clearance through hole;

[0024] When the protective cover is reset under external force, the limiting member pushes the protrusion to rotate in the opposite direction, thereby driving the main wheel to reset.

[0025] Preferably, the actuator is a protrusion, which and the limiting member are respectively located on the circumference of the movement trajectory of the protrusion; when the admittance device is in the preparation state for drug administration, the actuator presses the protrusion against the second end of the first clearance through hole.

[0026] Preferably, the first clearance through hole extends along the movement trajectory of the protrusion.

[0027] Preferably, the reference device further includes a triggering auxiliary component rotatably connected within the housing, and includes a second gear portion and a baffle, wherein the second gear portion meshes with the first gear portion;

[0028] When the inductor is in its initial state, the baffle covers the inlet end of the nozzle; when the main wheel rotates to trigger preparation for drug delivery, the triggering aid rotates in the opposite direction to expose the inlet end.

[0029] Preferably, the outer circumferential wall of the housing is provided with a second clearance through hole; the triggering auxiliary component includes a position indicator portion, which is positioned opposite to the second clearance through hole to indicate the change in the circumferential position of the triggering auxiliary component.

[0030] Preferably, the position indicator extends through the second clearance through-hole to be partially located outside the housing.

[0031] Preferably, the outer shell includes a first limiting structure and a second limiting structure to limit the initial position and the drug delivery position of the protective cover, respectively.

[0032] Preferably, the outer casing includes a first casing and a second casing, which are connected to form the cavity.

[0033] The present invention has the following technical effects:

[0034] This invention provides an inhaler in which the main wheel rotates simultaneously with the opening of the protective cover. This single action completes both the opening of the protective cover and the preparation for inhalation, making the operation convenient and avoiding ineffective drug administration and drug waste, thereby improving drug administration efficiency. Attached Figure Description

[0035] Figure 1 This is a partial structural side view of the admittance device of the present invention;

[0036] Figure 2This is a three-dimensional structural diagram of the protective cover of the present invention;

[0037] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0038] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0039] Figure 5 This is a three-dimensional structural diagram of the triggering auxiliary component of the present invention;

[0040] Figure 6 This is a schematic diagram of the assembly structure of the first housing, main wheel, and triggering auxiliary component of the present invention. Figure 1 ;

[0041] Figure 7 This is a schematic diagram of the assembly structure of the first housing, main wheel, and triggering auxiliary component of the present invention. Figure 2 ;

[0042] Figure 8 This is a three-dimensional structural diagram of the outer shell of the present invention;

[0043] Figure 9 This is a three-dimensional structural diagram of the absorber of the present invention in a ready-to-administer state.

[0044] Figure 10 This is an exploded structural diagram of the outer casing of the present invention;

[0045] Figure 11 This is a three-dimensional structural diagram of the quasi-inductor of the present invention in its initial state.

[0046] Explanation of reference numerals in the attached figures

[0047] 100. Accuracy detector;

[0048] 1. Outer shell; 11. First clearance through hole; 111. First end; 112. Second end; 12. Suction nozzle; 13. Second clearance through hole; 14. First limiting structure; 15. Second limiting structure; 16. Annular groove; 17. First housing; 18. Second housing; 191. First rotating shaft; 192. Second rotating shaft;

[0049] 2. Protective cover; 21. Actuator; 22. Limiting element;

[0050] 3. Main wheel; 31. First gear section; 32. Protrusion; 33. First shaft;

[0051] 4. Triggering auxiliary component; 41. Second gear section; 42. Baffle; 43. Position indicator section. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] The following is based on Figures 1 to 11The quasi-inspector of the present invention will be described in detail.

[0058] In this embodiment, such as Figure 1 , Figure 2 , Figure 6 , Figure 9 and Figure 11 As shown, the applicator 100 includes a housing 1, a protective cover 2, a main wheel 3, and a drug dispensing assembly (not shown in the figure). The housing 1 has a cavity, a first clearance through hole 11, and a nozzle 12. The protective cover 2 is located outside the housing 1 and is rotatably connected to the housing 1. When the applicator 100 is in the initial state, the protective cover 2 covers the outlet end of the nozzle 12. The protective cover 2 protects the nozzle 12 and prevents the nozzle 12 and the vesicles inside the housing 1 from being contaminated. The main wheel 3 is located in the cavity of the housing 1 and is rotatably connected to the housing 1. The drug dispensing assembly is located in the cavity and is rotatably connected to the housing 1.

[0059] like Figure 1 and Figure 2 As shown, the inner wall of the protective cover 2 is provided with an actuator 21. The main wheel 3 includes a first gear part 31 and an eccentrically arranged protrusion 32. The protrusion 32 extends out of the first clearance through hole 11. The first gear part 31 cooperates with the drug dispensing assembly. It should be understood that the drug dispensing assembly can adopt the drug dispensing structure of any existing accumulator. Typically, the drug dispensing assembly of an accumulator includes a blister roll, a blister substrate winding wheel, and a blister cap winding wheel. The blister roll is rotatably connected to the outer shell 1 and is equipped with multiple drug blister packs. The blister substrate winding wheel is used to collect the substrate after the blister packs are torn open, and the blister cap winding wheel is used to collect the cap after the blister packs are torn open. The cooperation relationship between the first gear part 31 and the drug dispensing assembly refers to the assembly structure in any existing accumulator.

[0060] like Figure 1 As shown, when the admittance device 100 is in its initial state, the protrusion 32 is in its initial position, and if the admittance device 100 has been used previously, the empty blister on the blister roll is aligned with the nozzle. Figure 1 and Figure 2 As shown, when the protective cover 2 rotates in the first direction under external force to expose the nozzle 12, the actuator 21 of the protective cover 2 rotates to abut against the protrusion 32. At this time, the protective cover 2 continues to rotate, and the actuator 21 applies a pushing force to the protrusion 32 in the first direction, thereby driving the main wheel 3 to rotate synchronously. In addition, since the first gear 31 cooperates with the drug dispensing assembly, the rotation of the main wheel 3 triggers the blister roll, blister substrate winding wheel, and blister cap winding wheel to rotate respectively to start drug dispensing. When the main wheel 3 rotates to the trigger position, the empty blister is removed, and the new blister on the blister roll is directly opposite the nozzle 12 and the nozzle 12 is fully exposed. The tearing mechanism (not shown in the figure) tears open the cap of the new blister directly opposite the nozzle 12. At this time, as Figure 9As shown, the inhaler 100 is in the ready-to-administer state, and the user can inhale the drug by holding the mouthpiece 12 in their mouth.

[0061] It should be understood that, in order to prevent the protective cap 2 from rotating easily and triggering drug administration erroneously, the protective cap 2 is designed to rotate only under a certain external force. For example, by increasing the assembly friction between the protective cap 2 and the outer shell 1, the protective cap 2 can be prevented from rotating easily. Of course, since the protective caps of existing detectors also cannot rotate easily, the structure used to limit the easy rotation of the protective cap 2 is not limited to this. It can also be any limiting structure of any existing detector configuration, which will not be elaborated here.

[0062] It should be understood that, for ease of operation, the user manually opens and closes the protective cover 2.

[0063] By adopting the above technical solution, when using the inhaler 100, the main wheel 3 rotates simultaneously with opening the protective cover 2, completing both the opening of the protective cover and the preparation for inhalation in a single action, making operation convenient. Moreover, compared to the traditional solution that requires two steps—opening the outer cover and moving the sliding lever—to trigger drug delivery, this solution offers several advantages. First, since the mouthpiece 12 is covered and cannot be held in the mouth if the protective cover 2 is not opened, users generally will not forget to open the protective cover 2, thus avoiding ineffective drug delivery. Second, since users typically do not repeatedly open and close the protective cover, it avoids the situation where new vesicles are opened and not used due to accidental drug delivery, preventing drug waste and thus improving drug delivery efficiency.

[0064] In one implementation, such as Figure 2 As shown, the inner wall of the protective cover 2 is provided with a limiting member 22. When the applicator 100 is in the initial state, the limiting member 22 limits the protrusion 32 to the initial position, thereby restricting the main wheel 3 from rotating under shaking conditions and thus preventing erroneous drug administration.

[0065] Of course, since the main wheel 3 cooperates with the drug dispensing assembly, the main wheel 3 needs to overcome the resistance brought by the drug dispensing assembly to rotate. Thus, the main wheel 3 will not rotate easily, and the applicator 100 may not need to be equipped with a limiting member 22 to restrict the main wheel 3 from rotating easily. Preferably, a limiting member 22 is provided to ensure the stability of the applicator 100.

[0066] Furthermore, such as Figure 2As shown, the limiting member 22 is a protrusion, which has a simple structure and is easy to manufacture. When the inhaler 100 is in the initial state, the limiting member 22 presses the protrusion 32 against the first end 111 of the first clearance through hole 11. The limiting member 22 and the first end 111 respectively clamp the protrusion 32 to achieve a stable limiting effect. Specifically, when drug administration is triggered, the protective cover 2 rotates in the first direction under external force to expose the mouthpiece 12. The actuator 21 and the limiting member 22 move synchronously. At this time, the limiting member 22 moves away from the protrusion 32 while the actuator 21 moves towards the protrusion 32. When the actuator 21 moves to abut against the protrusion 32, the actuator 21 drives the protrusion 32 to rotate. At this time, the main wheel 3 starts to rotate until the main wheel 3 moves to the trigger position, and the drug can be inhaled. When the protective cover 2 rotates in a second direction opposite to the first direction to reset under external force, the actuator 21 and the limiting member 22 rotate synchronously in opposite directions. At this time, the actuator 21 moves away from the protrusion 32 while the limiting member 22 moves towards the protrusion 32. When the limiting member 22 moves to abut against the protrusion 32, it can push the protrusion 32 to rotate in the opposite direction, thereby driving the main wheel 3 to reset. In this solution, the limiting member 22 simultaneously has the function of limiting and resetting the initial position of the protrusion 32.

[0067] It should be understood that the cross-sectional shape of the protrusion of the limiting member 22 includes, but is not limited to, square, circular, triangular, and polygonal shapes.

[0068] Of course, the structure of the limiting member 22 is not limited to this, and may also include, but is not limited to, a spring or a magnetic structure. If the limiting member 22 is a spring, one end of the spring is connected to the protrusion 32 and the other end is connected to the outer shell 1. When the accumulator 100 is in the initial state, the spring pulls the protrusion 32 to make it in the initial position; when the protrusion 32 is in the triggered position, the spring is stretched. When the external force applied to the protective cover 2 is removed, the spring rebounds to make the main wheel 3 and the protective cover 2 reset. In this solution, the spring also has the function of limiting and resetting the initial position of the protrusion 32. If the limiting member 22 is a magnetic structure and the protrusion 32 is made of iron, the limiting member 22 attracts the protrusion 32 to achieve the limiting function.

[0069] Furthermore, such as Figure 2 As shown, the actuator 21 is a protrusion, and the actuator 21 and the limiting member 22 are located on the circumference of the movement trajectory of the protrusion 32. When the applicator 100 is in the ready-to-administer state, the actuator 21 presses the protrusion 32 against the second end 112 of the first clearance through hole 11. The actuator 21 and the second end 112 together clamp the protrusion 32 so that the main wheel 3 is stably in the trigger position. In this way, the actuator 21 has the functions of actuation and limiting the trigger position of the protrusion 32, and its structure is simple and easy to process.

[0070] It should be understood that the cross-sectional shape of the protrusion of the actuator 21 includes, but is not limited to, square, circular, triangular, and polygonal shapes.

[0071] Of course, the structure of the actuator 21 is not limited to this; it can also be a magnetic structure, which drives the protrusion 32 to rotate synchronously through magnetic attraction.

[0072] In one implementation, such as Figure 1 and Figure 8 As shown, the first clearance through-hole 11 extends along the movement trajectory of the protrusion 32. Thus, the first clearance through-hole 11 has a curved, waist-shaped shape, which helps to reduce its size and prevents external dust and / or bacteria from entering the outer casing 1 through the first clearance through-hole 11, thus avoiding vesicle contamination. Of course, the first clearance through-hole 11 can also be square or round, in which case it has more unused space, making the vesicles more susceptible to contamination.

[0073] Furthermore, such as Figure 1 As shown, the outer casing 1 is provided with an annular groove 16. When the protective cover 2 rotates, the actuator 21 and the limiting member 22 rotate along the annular groove 16. Both the actuator 21 and the limiting member 22 extend partially into the annular groove 16. This allows the inner wall of the protective cover 2 to be closer to the outer wall of the outer casing 1, which is beneficial for the miniaturization design of the detector 100.

[0074] In one implementation, such as Figures 5 to 7 As shown, the inhaler 100 also includes a triggering auxiliary component 4, which is rotatably connected to the inside of the housing 1. The triggering auxiliary component 4 includes a second gear part 41 and a baffle 42. The second gear part 41 meshes with the first gear part 31. When the inhaler 100 is in the initial state, the baffle 42 covers the inlet end of the nozzle 12 to protect the vesicles inside the housing 1 from contamination. When the main wheel 3 rotates to trigger the drug delivery, due to the meshing relationship between the first gear part 31 and the second gear part 41, the triggering auxiliary component 4 rotates in the opposite direction, and the baffle 42 moves away from the nozzle 12 to expose the inlet end of the nozzle 12 to facilitate subsequent drug delivery.

[0075] Furthermore, such as Figure 5 , Figure 8 and Figure 9As shown, the outer circumferential wall of the outer casing 1 is provided with a second clearance through hole 13; the triggering auxiliary component 4 includes a position indicator 43, which is positioned opposite to the second clearance through hole 13 to indicate the change in the circumferential position of the triggering auxiliary component 4. Specifically, if the protective cover 2 rotates but does not rotate to the trigger position, the blister cannot be directly facing the mouthpiece 12 or the baffle 42 partially obstructs the blister, resulting in some dry powder remaining in the blister during inhalation, thus affecting the accuracy of the dosage. In this solution, the position of the position indicator 43 is set to indicate whether the user's inhaler 100 is currently in an accurate dosage state, avoiding insufficient dosage.

[0076] Furthermore, such as Figure 9 As shown, the position indicator 43 passes through the second clearance through hole 13 to be partially located outside the housing 1, making the indication clearer.

[0077] Furthermore, such as Figure 5 and Figure 9 As shown, the position indicator 43 includes a first rod 431 and a second rod 432 connected together. The second rod 432 passes through the second clearance through hole 13, and the first rod 431 is located outside the housing 1. The first rod 431 and the second rod 432 intersect, enabling more intuitive position indication. In addition, the first rod 431 is positioned close to the outer wall of the housing 1 to reduce the probability of the user accidentally touching the position indicator 43 and avoid triggering drug administration.

[0078] In one implementation, such as Figure 1 As shown, the outer shell 1 includes a first limiting structure 14 and a second limiting structure 15, which are used to limit the initial position and the drug delivery position of the protective cover 2, respectively. Specifically, as shown... Figure 11 As shown, when one side of the housing 1 is limited by the first limiting structure 14, the admittance device 100 is in its initial state; as Figure 9 As shown, when the other side of the outer shell 1 is limited to the second limiting structure 15, the accumulator 100 is in a ready-to-administer state, which is beneficial for the user to use the accumulator conveniently and accurately.

[0079] In one implementation, such as Figure 10 As shown, the outer casing 1 includes a first housing 17 and a second housing 18, which are connected to form a cavity for accommodating the internal components of the accumulator 100.

[0080] Furthermore, such as Figure 6 and Figure 7 As shown, the main wheel 3 is rotatably connected to the inner wall of the first housing 17 via the first rotating shaft 191.

[0081] Furthermore, such as Figure 6 and Figure 7 As shown, the triggering auxiliary component 4 is rotatably connected to the inner wall of the first housing 17 via the second rotating shaft 192.

[0082] It should be understood that the "initial position" and "trigger position" mentioned above are matched with the corresponding components. The protective cover 2, the main wheel 3, and the trigger auxiliary component 4 have different initial positions and trigger positions.

[0083] 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 quasi-atomizer, characterized in that, The admittance device (100) includes: The outer shell (1) has a cavity, a first clearance through hole (11) and a suction nozzle (12). A protective cover (2) is rotatably connected to the outer shell (1), and its inner wall is provided with an actuator (21), which is a protrusion; The main wheel (3) is rotatably connected to the housing (1) and includes a first gear part (31) and an eccentrically arranged protrusion (32) extending out of the first clearance through hole (11). A drug dispensing assembly that cooperates with the first gear (31) includes a blister roll, a blister substrate winding wheel and a blister cap winding wheel; When the accumulator (100) is in the initial state, the protective cover (2) covers the outlet end of the nozzle (12), and the protrusion (32) is in the initial position; When the protective cover (2) rotates under external force to expose the nozzle (12), the actuator (21) first rotates to abut against the protrusion (32), and then the actuator (21) pushes the main wheel (3) to rotate to the trigger position to trigger the drug dispensing assembly to dispense the drug, so that the precipitator (100) is in the drug delivery state; and when the main wheel (3) rotates, the main wheel (3) rotates to trigger the blister roll, blister substrate winding wheel and blister cap winding wheel to rotate respectively, and the drug dispensing assembly starts to dispense the drug. When the main wheel (3) is in the trigger position, the precipitator (100) is in the drug delivery state. The inner wall of the protective cover (2) is provided with a limiting member (22). When the accumulator (100) is in the initial state, the limiting member (22) limits the protrusion (32) to the initial position.

2. The quasi-nail of claim 1, wherein, The limiting member (22) is a protrusion; When the admittance device (100) is in the initial state, the limiting member (22) presses the protrusion (32) against the first end (111) of the first clearance through hole (11). When the protective cover (2) is reset under external force, the limiting member (22) pushes the protrusion (32) to rotate in the opposite direction so as to drive the main wheel (3) to reset.

3. The quasi-nail of claim 2, wherein, The actuator (21) and the limiting member (22) are respectively located on the circumference of the movement trajectory of the protrusion (32); when the accumulator (100) is in the preparation state for drug administration, the actuator (21) presses the protrusion (32) against the second end (112) of the first clearance through hole (11).

4. The quasi-nail according to any one of claims 1-3, wherein, The first clearance through hole (11) extends along the movement trajectory of the protrusion (32).

5. The quasi-nail according to any one of claims 1-3, wherein, The accumulator (100) further includes a triggering auxiliary component (4), which is rotatably connected to the housing (1), and the triggering auxiliary component (4) includes a second gear part (41) and a baffle (42), wherein the second gear part (41) meshes with the first gear part (31); When the inhaler (100) is in its initial state, the baffle (42) covers the inlet end of the nozzle (12); when the main wheel (3) rotates to trigger preparation for drug administration, the triggering aid (4) rotates in the opposite direction to expose the inlet end.

6. The quasi-nail of claim 5, wherein, The outer circumferential wall of the outer casing (1) is provided with a second clearance through hole (13); the triggering auxiliary member (4) includes a position indicator (43), which is positioned opposite to the second clearance through hole (13) to indicate the change of the position of the triggering auxiliary member (4) in the circumferential direction.

7. The quasi-nail of claim 6, wherein, The position indicator (43) passes through the second clearance through hole (13) to be partially located outside the housing (1).

8. The quasi-nail according to any one of claims 1-3, wherein, The outer shell (1) includes a first limiting structure (14) and a second limiting structure (15) to limit the initial position and the drug delivery position of the protective cover (2), respectively.

9. The quasi-nail according to any one of claims 1-3, wherein, The outer casing (1) includes a first casing (17) and a second casing (18), which are connected to form the cavity.

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