Breath-triggered aerosol apparatus
By using a breathing-triggered aerosol device with a housing, nozzle, elastic components, and rotating parts structure, the complexity and false triggering problems of existing inhalation drug delivery devices are solved, achieving a simple, stable, and economical drug release effect.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- JIUZHONG (ZHUJI) TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2026-01-16
- Publication Date
- 2026-07-23
AI Technical Summary
Existing inhalation drug delivery devices are complex in structure, expensive, and difficult for patients to use correctly. In particular, electronic triggering methods require coordination skills and are prone to false triggering or insufficient dosage.
Design a breathing-triggered aerosol device, which adopts a structure of shell, nozzle, elastic component and rotating part. The rotation of the interface cover drives the rotating part to compress the elastic component to store potential energy. When inhaling, the potential energy is released to trigger the drug to be sprayed out, which is simplified to one-handed operation and avoids accidental triggering.
It achieves drug release with simple structure and high stability. Patients can complete drug spraying with one hand, avoiding drug waste and accidental triggering, and reducing the complexity and cost of the device.
Smart Images
Figure CN2026073175_23072026_PF_FP_ABST
Abstract
Description
A breathing-triggered aerosol device
[0001] Cross-reference declaration
[0002] This invention claims Chinese Patent Application No. CN2025100741079, filed on January 17, 2025, the entire contents of which are incorporated herein by reference. Technical Field
[0003] This disclosure relates to an inhaler for use in inhalation into a user's airway, and more particularly to a breath-triggered aerosol device. Background Technology
[0004] Inhalation is a method of drug delivery that uses inhalation to deliver medication to the site of the lesion, specifically to the lungs, thereby producing a local or systemic therapeutic effect. Compared to oral administration, its advantages lie in the rapid and efficient delivery of the drug. The lungs have a large contact surface area, a high penetration rate, and ample blood supply, allowing for rapid drug absorption. A smaller drug dose can achieve the desired therapeutic effect, and it also reduces toxic side effects.
[0005] Currently, inhalation drug delivery devices, both domestically and internationally, employ a negative pressure tympanic membrane-driven triggering method. This method generates negative pressure to achieve drug inhalation and delivery, but it has several drawbacks. First, the structure is typically complex, meaning higher costs. Furthermore, these devices can be difficult to use, especially for patients with poor hand-eye coordination or limited cognitive abilities, leading to a higher risk of accidental triggering. These factors can cause difficulties for patients during use, affecting proper drug absorption and efficacy. Alternatively, inhalation drug delivery devices may use electronic triggering, controlling drug release via electronic signals. However, such devices require a certain level of operational skill from the patient or user, particularly in coordinating inhalation with device triggering. Delayed triggering can easily occur, potentially reducing the pulmonary dose, especially in the latter half of the inhalation phase; additionally, the design is complex, resulting in higher manufacturing costs. Summary of the Invention
[0006] The purpose of this disclosure is to provide a breathing-triggered aerosol device.
[0007] This disclosure provides a respiration-triggered aerosol device, comprising:
[0008] A housing having a receiving cavity for accommodating a medicine container, the housing having an air inlet and an interface both communicating with the receiving cavity;
[0009] A nozzle is located within the receiving cavity and is disposed on the housing, with the nozzle outlet facing the interface;
[0010] An elastic component is located in the receiving cavity and is movably disposed within the housing. The elastic component has a first position and a second position relative to the housing. When the elastic component is in the first position, it has no elastic potential energy. When the elastic component is in the second position, it is compressed along a preset direction and stores elastic potential energy. The elastic potential energy is used to provide external force to the medicine canister and trigger the medicine canister to spray out the medicine.
[0011] A rotating component is located in the receiving cavity, and the rotating component is rotatably disposed on the housing;
[0012] An interface cover is rotatably mounted on the housing for sealing and opening the interface. When the interface cover seals the interface, the elastic component is not compressed and has no elastic potential energy. When the interface cover rotates to open the interface, the interface cover rotates and pushes the rotating component to rotate, changing the length of the rotating component along the preset direction, thereby enabling the rotating component to push the elastic component, compressing it along the preset direction and storing the elastic potential energy.
[0013] This disclosure provides a respiratory-triggered aerosol device, including a housing with a cavity for accommodating a medication canister. A nozzle, an elastic component, and a rotating component are disposed within the cavity. The housing includes an air inlet and an interface, which is aligned with the patient's mouth. Medication from the canister is introduced into the patient's mouth through the interface and then into the respiratory tract to achieve a therapeutic effect. To ensure cleanliness, an interface cover is provided at the interface location, as the interface is in contact with the patient's mouth. The interface cover is rotatably mounted on the housing. Rotating the interface cover allows for sealing and opening of the interface. When medication needs to be sprayed from the interface, the interface cover is rotated to open it; after use, the interface cover is rotated again to seal the interface. For ease of understanding, the working process of the respiratory-triggered aerosol device provided in this disclosure is described below. When the patient is not using it, the interface cover seals the interface, and the elastic component is not compressed, meaning that the elastic component is in its natural state. When the patient uses it, the interface cover is turned by hand to open the interface. During the rotation of the interface cover, the rotating component is pushed to rotate, compressing and storing elastic potential energy. The elastic component compresses and stores elastic potential energy. During the opening of the interface cover, the length of the rotating component changes along a preset direction, thus pushing the elastic component and compressing it along the preset direction. Then, when the elastic component releases its elastic potential energy, it simultaneously triggers the canister, spraying the medication from the interface into the patient's mouth. The medication in the canister does not evaporate prematurely during the entire operation. Furthermore, after the medication is sprayed from the canister, the elastic component is not compressed when the interface cover is closed. The compression and release of the elastic component are completed during a single use, thus effectively avoiding the risk of accidental triggering. The rotating component replaces many complex interlocking parts. When the interface cover is closed, the rotating component restricts its free rotation. The interface cover causes the rotating component to change its length in a preset direction, compressing the elastic component in that direction. This is achieved using a lever-driven triggering method. The elastic component releases its elastic potential energy, thus dispensing the medication from the canister. As described above, the respiratory-triggered aerosol device provided in this disclosure has few parts, a simple structure, and high stability. The patient opens the interface cover with one hand, allowing the opening spring assembly to store elastic potential energy, triggering the medication dispensing. All mechanical actions are completed through the rotation of the interface cover and the inhalation from the air inlet.
[0014] Optionally, the interface cover at least partially covers the outer surface of the housing, and a first protrusion is provided on the inner surface of the interface cover facing the housing;
[0015] The rotating component is rotatably connected to the housing via a rotating shaft, which divides the rotating component into a first part and a second part. The rotating component has a first position and a second position relative to the housing. When the rotating component changes from the first position to the second position, the first protrusion of the interface cover contacts the first part of the rotating component and provides rotational force, and the second part of the rotating component contacts the elastic component to compress the elastic component along the preset direction.
[0016] Optionally, it also includes a pneumatic valve located in the receiving cavity, the pneumatic valve being rotatably mounted on the housing, the pneumatic valve having an initial position and an end position relative to the housing;
[0017] The second part of the rotating component has a second protrusion on the side facing the pneumatic valve;
[0018] When the pneumatic valve moves from the end position to the initial position, the pneumatic valve blocks the passage between the nozzle and the interface. The second part of the rotating member contacts the elastic component to compress the elastic component along the preset direction. The elastic component and the pneumatic valve form a constraint. The second protrusion of the rotating member contacts the pneumatic valve and provides rotational force to the pneumatic valve.
[0019] When the pneumatic valve moves from the initial position to the final position, the pneumatic valve connects the passage between the nozzle and the interface. When the pneumatic valve is in the initial position, the rotating component is in the second position, the elastic component releases the constraint on the pneumatic valve, the interface cover opens to expose the interface, and the interface is used to contact the patient's mouth. When the patient inhales, a negative pressure is formed in the closed space formed between the interface and the pneumatic valve. The pressure difference force drives the pneumatic valve to rotate from the initial position to the final position.
[0020] Optionally, the pneumatic valve is provided with a third protrusion on the side facing the rotating member, and the second protrusion is configured to cooperate with the third protrusion;
[0021] When the rotating member rotates from the first position to the second position, the rotating member compresses the elastic component along the preset direction, and the second protrusion and the third protrusion cooperate to drive the pneumatic valve to rotate to the initial position.
[0022] Optionally, a first limiting part and a second limiting part are provided on the inner wall of the housing;
[0023] When the rotating member is in the first position, the second part of the rotating member abuts against the first limiting part, restricting the rotating member from rotating around the first direction;
[0024] When the rotating member is in the second position, the first part of the rotating member abuts against the second limiting part, restricting the rotating member from rotating around the second direction, which is opposite to the second direction.
[0025] Optionally, a third limiting part is also provided on the inner wall of the housing. When the pneumatic valve is in the initial state, the third limiting part abuts against the pneumatic valve to restrict the pneumatic valve from rotating around the first direction.
[0026] Optionally, the elastic component includes: an elastic block and a spring arranged along the preset direction; the housing includes a body and a cover detachably connected to the body, the body having an opening communicating with the receiving cavity, and when the housing is disassembled, the opening of the body is exposed, and the elastic component and the medicine bottle can be pulled out or inserted from the opening;
[0027] The spring is located between the elastic block and the shell cover. The elastic block has an internal space for accommodating at least part of the medicine container. The nozzle is located outside the internal space of the elastic block and is in communication with the medicine container.
[0028] Optionally, the elastic block includes a guide strip that extends along the preset direction away from the cover.
[0029] The end of the guide strip away from the cover is in contact with or away from the rotating member. The guide strip has a first locking member, and the pneumatic valve has a second locking member. The second locking member cooperates with the first locking member. When the elastic block moves toward the rotating member, the second locking member abuts against the first locking member, and the pneumatic valve and the guide strip are limited to achieve the rotation of the pneumatic valve along with the guide strip. When the pneumatic valve moves from the initial position to the end position, the second locking member moves away from the first locking member, and the limitation of the pneumatic valve and the guide strip is released.
[0030] Optionally, when the elastic potential energy of the elastic component is released, the pneumatic valve is in the end position, and the third protrusion is parallel to and attached to the guide strip of the elastic component.
[0031] Optionally, the rotating component is a plate-shaped structure, and the distance from the end of the first component to the rotating shaft is greater than the distance from the end of the second component to the rotating shaft.
[0032] Optionally, the rotating component is made of an elastic material;
[0033] And / or, the first protrusion is made of an elastic material. Attached Figure Description
[0034] Figure 1 is a schematic diagram of the overall structure of a respiratory-triggered aerosol device provided in an embodiment of this disclosure;
[0035] Figure 2 is an exploded view of a respiratory-triggered aerosol device provided in an embodiment of this disclosure;
[0036] Figure 3 is a cross-sectional view of a respiratory-triggered aerosol device provided in an embodiment of this disclosure;
[0037] Figure 4 is a second cross-sectional view of a respiratory-triggered aerosol device provided in an embodiment of this disclosure;
[0038] Figure 5 is a partial enlarged schematic diagram of point A in Figure 4 of this disclosure;
[0039] Figure 6 is a partial enlarged schematic diagram of point B in Figure 5 of this disclosure;
[0040] Figure 7 is a cross-sectional view three of a breathing-triggered aerosol device provided in an embodiment of this disclosure;
[0041] Figure 8 is a partial enlarged schematic diagram of point C in Figure 7 of this disclosure;
[0042] Figure 9 is a cross-sectional view of a respiratory-triggered aerosol device provided in an embodiment of this disclosure;
[0043] Figure 10 is a partial enlarged schematic diagram of point D in Figure 9 of this disclosure;
[0044] Figure 11 is a schematic diagram of the interface cover of a breathing-triggered aerosol device provided in an embodiment of this disclosure in the closed position;
[0045] Figure 12 is a schematic diagram of the structure of an interface cover of a respiratory trigger aerosol device provided in an embodiment of the present disclosure, which opens from the closed position.
[0046] Figure 13 is a partial enlarged schematic diagram of point E in Figure 12 of this disclosure;
[0047] Figure 14 is a partial schematic diagram of a respiratory-triggered aerosol device provided in an embodiment of this disclosure;
[0048] Figure 15 is a partial enlarged schematic diagram of point F in Figure 14 of this disclosure;
[0049] Figure 16 is a schematic diagram of a respiratory-triggered aerosol device in a second position according to an embodiment of the present disclosure;
[0050] Figure 17 is a partially enlarged schematic diagram of point H in Figure 16 of this disclosure;
[0051] Figure 18 is a partial enlarged schematic diagram of point G in Figure 16 of this disclosure;
[0052] Figure 19 is a partial enlarged schematic diagram of point I in Figure 16 of this disclosure;
[0053] Figure 20 is a schematic diagram of the interface cover of a breathing-triggered aerosol device provided in an embodiment of this disclosure, with the cover fully open.
[0054] Figure 21 is a partial enlarged schematic diagram of point K in Figure 20 of this disclosure;
[0055] Figure 22 is a schematic diagram of the interface cover of a respiratory trigger aerosol device provided in an embodiment of the present disclosure, showing the process from open to closed.
[0056] Figure 23 is a partially enlarged schematic diagram of the corresponding L point in Figure 22 of this disclosure;
[0057] Figure 24 is a partial enlarged schematic diagram of point M corresponding to Figure 22 of this disclosure;
[0058] Figure 25 is a schematic diagram of the overall structure of another breathing-triggered aerosol device provided in an embodiment of this disclosure;
[0059] Figure 26 is a schematic diagram of the overall structure of another breathing-triggered aerosol device provided in an embodiment of this disclosure;
[0060] Figure 27 is an exploded view of another breathing-triggered aerosol device provided in an embodiment of this disclosure;
[0061] Figure 28 is a three-dimensional structural diagram of the elastic block and the medicine canister in another breathing-triggered aerosol device provided in an embodiment of this disclosure;
[0062] Figure 29 is a bottom view of the elastic block and the medicine canister in another breathing-triggered aerosol device provided in an embodiment of this disclosure;
[0063] Figure 30 is a cross-sectional view of the NN section of Figure 29;
[0064] Figure 31 is a schematic diagram of the internal structure of another breathing-triggered aerosol device provided in this embodiment of the present disclosure after the first housing is removed without the button being pressed.
[0065] Figure 32 is a top view of another breathing-triggered aerosol device provided in this embodiment of the present disclosure after the first housing has been removed without the button being pressed.
[0066] Figure 33 is a cross-sectional view at point OO corresponding to Figure 32;
[0067] Figure 34 is a schematic diagram of the internal structure of another breathing-triggered aerosol device provided in this embodiment of the present disclosure after the first housing is removed after the button is pressed.
[0068] Figure 35 is a top view of another breathing-triggered aerosol device provided in this embodiment of the present disclosure after the first housing is removed following pressing of the button.
[0069] Figure 36 is a cross-sectional view at point PP in Figure 35;
[0070] Figure 37 is a three-dimensional structural schematic diagram of the positional relationship between the shell constraint member and the limiting card in another breathing-triggered aerosol package provided in an embodiment of this disclosure;
[0071] Figure 38 is a magnified view of the corresponding part at point A in Figure 37;
[0072] Figure 39 is a front view of the positional relationship between the housing constraint and the limiting card in another breathing-triggered aerosol package provided in an embodiment of this disclosure;
[0073] Figure 40 is a cross-sectional view of the QQ section in Figure 39;
[0074] Figure 41 is a magnified view of the corresponding area R in Figure 40;
[0075] Figure 42 is a schematic diagram of the structure of another breathing-triggered aerosol dispenser after the transfer plate rotates, according to an embodiment of this disclosure.
[0076] Figure 43 is an enlarged view of point A in Figure 42;
[0077] Figure 44 is a schematic diagram of the structure of another breathing-triggered aerosol dispenser after the transfer plate rotates, according to another embodiment of this disclosure.
[0078] Figure 45 is an enlarged view of point B in Figure 44;
[0079] Figure 46 is a schematic diagram of the structure of another breathing-triggered aerosol dispenser after the transfer plate rotates, according to another embodiment of this disclosure.
[0080] Figure 47 is an enlarged view of point D in Figure 46;
[0081] Figure 48 is a schematic diagram of another respiratory-triggered aerosol device provided in an embodiment of this disclosure;
[0082] Figure 49 is a cross-sectional view of another breathing-triggered aerosol device provided in an embodiment of this disclosure;
[0083] Figure 50 is a magnified view of the corresponding part at point B in Figure 49;
[0084] Icons: 01-Drug canister; 011-Nozzle; 012-Valve; 1-Shell; 11-Receiving cavity; 11A-Enclosed area; 12-Air inlet; 13-Interface; 14-First limiting part; 15-Second limiting part; 16-Third limiting part; 17-Body; 171-First shell; 172-Second shell; 173-Shell constraint; 173a-Upper constraint; 173b-Lower constraint; 174-Matching part; 18-Shell cover; 19-Connecting cover; 2-Elastic component; 21-Elastic block; 211-Internal space; 212-Guide strip; 2121-First snap-fit component; 213-Snap-fit ring; 213a-Snap-fit ring opening; 214-Extension component; 2141-Extension component locking point; 22-Spring; 3-Rotating component; 31-First part; 32-Second part; 33-Second protrusion; 34-Rotating plate protrusion; 4-Interface cover; 41-First protrusion; 5-Rotating shaft; 6-Pneumatic valve; 61-Third protrusion; 62-Second snap-fit component; 63-Pneumatic valve protrusion; 7-Nozzle; 71-Nozzle outlet; 8-Press button; 81-Limiting clip; Detailed Implementation
[0085] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.
[0086] Furthermore, the following descriptions of the embodiments are with reference to the accompanying illustrations, which illustrate specific embodiments in which this disclosure can be implemented. Directional terms used in this disclosure, such as "up," "down," "front," "rear," "left," "right," "inner," "outer," and "side," are merely directional references to the accompanying illustrations. Therefore, the directional terms used are for better and clearer explanation and understanding of this disclosure, and are not intended to indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this disclosure.
[0087] It should be noted that, in order to more clearly describe the respiration-triggered aerosol device provided in this disclosure, the direction of the rotational center axis of an object such as a column or tube is defined as the axial direction; the circumferential direction is the direction around the axis of the object (perpendicular to the axis and also perpendicular to the cross-sectional radius); and the radial direction is the direction along the diameter or radius. It is worth noting that the term "end" appearing in terms such as "one end," "the other end," "first end," "second end," "initial end," "end point," "both ends," "free end," "upper end," and "lower end" is not limited to a tip, endpoint, or end face, but also includes a portion extending axially and / or radially from the tip, endpoint, or end face on the element to which the tip, endpoint, or end face belongs. Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The conventional terminology used in this specification is for the purpose of describing particular embodiments only and should not be construed as limiting the disclosure.
[0088] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.
[0089] Currently, inhalation drug delivery devices on the market include those from Teva Pharmaceutical Industries Limited (TEVA), such as the autohaler and redihaler. These typically use a negative pressure tympanic membrane-driven triggering method, which is structurally complex, unstable, and prone to false triggering. Additionally, electronic triggering methods are available internationally, but these require patients or users to possess certain operational skills, particularly in coordinating inhalation with device triggering. Some companies also use lever-driven triggering methods, but these are structurally complex, have a high failure rate, and are costly to produce.
[0090] Inhalation drug delivery is a method of drug administration that delivers medication to the site of disease through inhalation, thereby producing a local or systemic therapeutic effect. It is currently widely used for diseases of the respiratory system and other similar conditions. Compared to oral administration, its advantages lie in the rapid and efficient delivery of the drug. The large contact surface area with the lungs, high penetration rate, and ample blood supply ensure rapid drug absorption. Furthermore, by avoiding the first-pass effect, a smaller drug dose can achieve the desired therapeutic effect, and toxic side effects can be reduced.
[0091] Therefore, in order to solve the above-mentioned series of problems, as shown in Figures 1 and 2, this embodiment of the present disclosure provides a breathing-triggered aerosol device, including: a housing 1, the housing 1 having a receiving cavity 11 for accommodating a medicine canister 01, the housing 1 having an air inlet 12 and an interface 13 both communicating with the receiving cavity 11; and a nozzle 7, located inside the receiving cavity 11 and disposed on the housing 1, with the nozzle outlet 71 facing the interface 13.
[0092] The elastic component 2 is located in the receiving cavity 11 and is movably disposed in the housing 1. The elastic component 2 has a first position and a second position relative to the housing 1. When the elastic component 2 is in the first position, the elastic component 2 does not have elastic potential energy. When the elastic component 2 is in the second position, the elastic component 2 is compressed along a preset direction and stores elastic potential energy. The elastic potential energy is used to provide external force to the medicine canister 01 and trigger the medicine canister 01 to spray out medicine.
[0093] Rotating component 3 is located in receiving cavity 11 and is rotatably mounted on housing 1;
[0094] Interface cover 4 is rotatably mounted on housing 1 and is used to block and open interface 13. When interface cover 4 blocks interface 13, elastic component 2 is not compressed and has no elastic potential energy. When interface cover 4 rotates to open interface 13, interface cover 4 rotates to push rotating component 3 to rotate, changing the length of rotating component 3 along a preset direction, so that rotating component 3 pushes elastic component 2, compressing it along the preset direction and storing elastic potential energy.
[0095] It should be noted that the respiratory trigger aerosol device provided in this disclosure includes a housing 1, in which a receiving cavity 11 for accommodating a medicine canister 01 is formed. A nozzle 7, an elastic component 2, and a rotating component 3 are disposed in the receiving cavity 11. The housing 1 includes an air inlet 12 and an interface 13. The interface 13 is aligned with the patient's mouth, allowing the medicine in the medicine canister 01 to enter the patient's mouth through the interface 13 and then enter the respiratory tract to achieve a therapeutic effect. Since the interface 13 is in contact with the patient's mouth, an interface cover 4 is provided at the interface 13 to ensure its cleanliness. The interface cover 4 is rotatably mounted on the housing 1. The interface 13 can be sealed and opened by rotating the interface cover 4. When it is necessary to spray the medicine from the medicine canister 01 from the interface 13, the interface cover 4 needs to be rotated to open the interface 13. After use, the interface cover 4 is rotated again to seal the interface 13. For ease of understanding, the working process of the respiratory-triggered aerosol device provided in this disclosure is described below. When the patient is not using it, the interface cover 4 seals the interface 13, and the elastic component 2 is not compressed at this time, that is, the elastic component 2 is in its natural state. When the patient uses it, the interface cover 4 is turned by hand to open the interface 13. During the rotation of the interface cover 4, the rotating component 3 is pushed to rotate. During the rotation of the rotating component 3, elastic potential energy is compressed and stored. The elastic potential energy compressed and stored in the elastic component 2 is also used to open the interface cover 4, which drives the rotating component 3 to rotate along the interface 13. The length of the elastic component changes in the preset direction, pushing the elastic component 2 and compressing it along the preset direction. Then, when the elastic component 2 releases its elastic potential energy, it simultaneously triggers the drive of the medicine container 01, spraying the medicine from the interface 13 into the patient's mouth. Throughout the entire operation, the medicine in the medicine container 01 is not pre-evaporated. Furthermore, after the medicine is sprayed from the medicine container 01, the elastic component 2 is not compressed after the interface cover 4 is closed. The compression and release of the elastic component 2 are completed in a single use, effectively avoiding the risk of accidental triggering. The rotating component 3 replaces many complex interlocking parts. When the interface cover 4 is in the closed position, the rotating component 3 restricts the free rotation of the interface cover 4. The interface cover 4 drives the rotating component 3 to change its length in the preset direction, compressing the elastic component 2 in the preset direction. A lever-driven triggering method is used, and the elastic component 2 releases its elastic potential energy, completing the spraying of the medicine in the medicine container 01. As can be seen from the above description, the respiratory trigger aerosol device provided in this disclosure has few parts and a simple structure, and high stability. At the same time, the patient opens the interface cover 4 with one hand to complete the opening spring assembly 2 to store elastic potential energy, thereby triggering the spraying of the medicine canister 01. All mechanical actions are completed by the rotation of the interface cover 4 and the inhalation of air from the air inlet 12.
[0096] Referring again to Figure 1, which is a schematic diagram of the overall structure of a breath-triggered aerosol device provided in this embodiment of the present disclosure, the housing 1 includes a body 17 and a housing cover 18 detachably connected to the body 17. The body 17 has an opening that communicates with a receiving cavity 11, and the housing cover 18 is installed at the opening of the body 17. After the housing cover 18 is removed, the elastic component 2 and the medicine canister 01 are placed into the receiving cavity from the opening. After the elastic component 2 and the medicine canister 01 are placed in, the housing cover 18 is installed on the body 17 and the opening is closed, thus completing the assembly of the breath-triggered aerosol device provided in this embodiment of the present disclosure. When the medicine in the medicine canister 01 is used up, the housing cover 18 is separated from the body 17, and the elastic component 2 and the medicine canister 01 are taken out from the receiving cavity 11 of the housing 1 and replaced with a new medicine canister 01. This operation does not require the complete removal of the housing 1; only the housing cover 18 needs to be opened to complete the replacement of the medicine canister and the elastic component, making the operation more convenient for patients and thus saving costs. The main body 17 includes a first shell 171 and a second shell 172. The first shell 171 and the second shell 172 are detachably connected to facilitate the assembly of the main body 17. The interface cover 4 is rotatably mounted on the shell 1. At this time, the state shown in Figure 1 is that the interface 13 (not shown in the figure) is blocked by the interface cover 4, that is, the interface cover 4 is in the closed position. An air inlet 12 communicating with the receiving cavity 11 is provided on the shell 1.
[0097] To clearly understand the structure within the internal cavity 11 of the housing 1, refer to Figure 2, which is an exploded view of a respiration-triggered aerosol device provided in this embodiment. The internal cavity 11 of the housing 1 is provided with an elastic component 2, which includes a spring block 21 and a spring 22 arranged along a preset direction. The spring 22 is located between the spring block 21 and the housing cover 18. The spring block 21 has an internal space 211 for accommodating at least a portion of the medicine canister 01. The nozzle 7 is located outside the internal space 211 of the spring block 21 and communicates with the medicine canister 01. There is also a rotating component 3 and a pneumatic valve 6 located within the internal cavity 11 of the housing 1. Both the rotating component 3 and the pneumatic valve 6 are rotatably mounted on the housing 1. The rotation of the interface cover 4 drives the rotating component 3 to rotate, thereby changing its length along a preset direction and compressing the elastic component 2. Simultaneously, the rotation of the rotating component 3 drives the pneumatic valve 6 to rotate. This series of actions completes the preparation work for the medicine in the medicine canister 01 to be sprayed from the nozzle 7.
[0098] As shown in Figures 3 and 4, the interface cover 4 at least partially covers the outer surface of the housing 1, and a first protrusion 41 is provided on the inner surface of the interface cover 4 facing the housing 1. The rotating member 3 is rotatably connected to the housing 1 through a rotating shaft 5, which divides the rotating member 3 into a first part 31 and a second part 32. The rotating member 3 has a first position and a second position relative to the housing 1. For ease of explanation, the position of the rotating member 3 shown in Figure 3 is the first position, while the second position is when the first protrusion 41 of the interface cover 4 contacts and drives the second part 32 of the rotating member 3 to rotate to the limit position. The second position is when the rotating member 3 contacts the second limiting part 15 provided on the second shell 172 of the housing 1. When the rotating member 3 changes from the first position to the second position, the first protrusion 41 of the interface cover 4 contacts the first part 31 of the rotating member 3 and provides rotational force, and the second part 32 of the rotating member 3 contacts the elastic component 2 to compress the elastic component 2 in a preset direction.
[0099] In some specific embodiments, as shown in Figures 4-10, the breathing-triggered aerosol device provided in this disclosure further includes a pneumatic valve 6 located in the receiving cavity 11. The pneumatic valve 6 is rotatably mounted on the housing 1, and has an initial position and an end position relative to the housing 1. For ease of explanation, the initial position is the position of the pneumatic valve 6 shown in Figure 4. Referring also to Figure 5, the pneumatic valve 6 in the initial position contacts the third limiting part 16 provided on the housing 1. The third limiting part 16 restricts the rotation of the pneumatic valve 6 in the first direction. The end position of the pneumatic valve 6 is the position of the pneumatic valve 6 shown in Figure 7. The movement process of the pneumatic valve 6 will be described below. When the pneumatic valve 6 moves from the end position to the initial position, the pneumatic valve 6 blocks the spray outlet 7. The passage between interface 13 and the rotating part 3, the second part 32 of the rotating part 3 contacts the elastic component 2 to compress the elastic component 2 in a preset direction, the elastic component 2 forms a constraint with the pneumatic valve 6, the second protrusion 33 of the rotating part 3 contacts the pneumatic valve 6 and provides rotational force to the pneumatic valve 6; when the pneumatic valve 6 moves from the initial position to the end position, the pneumatic valve 6 connects the passage between the nozzle 71 and interface 13. When the pneumatic valve 6 is in the initial position, the rotating part 3 is in the second position, the elastic component 2 releases the constraint on the pneumatic valve 6, at this time the interface cover 4 is in the open state to expose the interface 13, and the interface 13 is used to contact the patient's mouth. When the patient inhales, a negative pressure is formed in the closed space formed between the interface 13 and the pneumatic valve 6, and the pressure difference drives the pneumatic valve 6 to rotate from the initial position to the end position.
[0100] To clearly illustrate the positions and transmission relationships among the elastic component 2, the rotating component 3, and the pneumatic valve 6, please refer to Figure 4 and Figure 6. In Figure 4, the pneumatic valve 6 is in its initial position, and the rotating component 3 is rotating from the first position to the second position. At this time, the rotating component 3 lifts the spring assembly 2 along a preset direction, which compresses the spring 22 in the spring assembly 2. The spring 22 stores elastic potential energy, causing the elastic block 21 in the spring assembly 2 to be in a pre-excited state. The elastic block 21 includes a guide bar 212, which extends along the preset direction away from the cover 18. The second latching member 62 of the pneumatic valve 6 abuts against the first latching member 2121 of the guide bar 212.
[0101] Referring again to Figures 7 and 8, the spring 22 in the elastic component 2 is decompressed, that is, the elastic block 21 is released, pushing the medicine canister 01 to move downward, which is equivalent to pressing the valve 012 of the medicine canister 01 to spray the medicine from the nozzle 71 fixed on the housing 1. The nozzle 71 is opposite to the interface 13, so that the medicine enters the patient's mouth from the interface 13. During the process of the medicine being sprayed from the medicine container 01, when the patient inhales, a negative pressure is formed in the closed space between the interface 13 and the pneumatic valve 6. Airflow is drawn in from the air inlet 12, causing the pneumatic valve 6 to open under the action of the inhaled airflow at the air inlet 12. The pressure difference force drives the pneumatic valve 6 to rotate from the initial position to the final position, that is, the pneumatic valve 6 switches from the initial position to the final position, as shown in Figure 7. The pressure difference force provides the rotational force for the pneumatic valve 6. As the pneumatic valve 6 rotates around the second direction, the second latch 62 on the pneumatic valve 6 separates from the first latch 2121 on the guide bar 212. The constraint of the elastic component 2 on the pneumatic valve 6 is released, and the elastic potential energy of the elastic component 2 is released. The elastic block 21 moves in the opposite direction to the preset direction, and the elastic component 2 contacts the second part 32 of the rotating component 3, driving the rotating component 3 to the first position. As shown in Figure 8, the second latch 62 of the pneumatic valve 6 releases contact with the first latch 2121 of the guide bar 212. As shown in Figure 9, the pneumatic valve 6 rotates to its initial position by the pressure difference generated by the patient's inhalation. The third protrusion 61 is parallel to and fits against the guide strip 212 of the elastic component 2, which can constrain the pneumatic valve 6, so that the pneumatic valve 6 will not rotate arbitrarily, and will fit tightly against the lower edge of the interface 13, so as not to block the medicine sprayed from the nozzle 7.
[0102] In addition, some similar inhalation drug delivery devices compress the spring after the first use when the interface cover is closed, drawing the medication from the compressed canister into the canister valve. When the interface cover is opened again for the second use, the medication drawn from the canister into the canister valve during the first use will evaporate. This means that during the time between two uses, the medication in the canister has already been drawn into the canister valve, and there is a risk of the medication evaporating and being lost. At the same time, the spring remains compressed until the next use, which poses a risk of accidental triggering. In other words, even a small amount of compression applied to the elastic component through the interface cover can trigger the medication in the canister to spray out. The breathing-triggered aerosol device provided in this embodiment does not compress the spring 22 in the elastic component 2 before opening the interface cover 4. As shown in FIG9 and referring to FIG10, the spring 22 is compressed only during the process of opening the cover. At the same time, the medicine in the medicine canister 01 is drawn into the medicine canister 01 valve 012. The valve 012 is connected to the nozzle through the nozzle pipe 011, and then the driving trigger is completed. In this way, there is no risk of medicine evaporation and loss. In addition, the spring 22 of the elastic component 2 is not compressed after the interface cover 4 is closed, which greatly reduces the risk of false triggering, because the compression and release of the spring 22 are completed in one use.
[0103] The adapter in the breathing-triggered aerosol device provided in this embodiment replaces the function of many parts with one component. The first part 31 of the rotating component 3, through its mutual linkage with the first protrusion 41 of the interface cover 4, completes the function of lifting the elastic block 21 in the elastic component 2 and compressing the spring 22.
[0104] The present invention discloses a breathing-triggered aerosol device with few and simple parts, high stability, and the ability to open the interface cover 4 with one hand to store energy in the spring 22, trigger the rotation of the pneumatic valve 6 by inhalation, and complete the spraying of the medicine canister 01. All mechanical actions are completed by the rotation of the interface cover 4 and the patient's inhalation.
[0105] As shown in Figure 11, Figure 11 is a structural schematic diagram of the interface cover 4 of a breathing-triggered aerosol device provided in this embodiment of the present disclosure in the closed position; the interface cover 4 completely seals the interface 13. It is worth noting that at this time, the first protrusion 41 of the interface cover 4 does not contact the first part 31 of the rotating member 3 and has a certain gap. This design, combined with the elastic component 2 not being compressed at this time, can effectively prevent the medicine from being sprayed out of the medicine canister 01 due to contact.
[0106] Furthermore, a first limiting part 14 and a second limiting part 15 are provided on the inner wall of the housing 1. When the rotating member 3 is in the first position, the second part 32 of the rotating member 3 abuts against the first limiting part 14, restricting the rotating member 3 from rotating around the first direction. When the rotating member 3 is in the second position, the first part 31 of the rotating member 3 abuts against the second limiting part 15, restricting the rotating member 3 from rotating around the second direction. The first direction and the second direction are opposite, for example, if the first direction is clockwise, then the second direction is counterclockwise; or, if the first direction is counterclockwise, then the second direction is clockwise. A third limiting part 16 is also provided on the inner wall of the housing 1. In Figure 11, the pneumatic valve 6 is in the end position, at which time the third limiting part 16 does not play any role. When the pneumatic valve 6 is in the initial state, the third limiting part 16 abuts against the pneumatic valve 6, restricting the pneumatic valve 6 from continuing to rotate around the first direction.
[0107] As shown in Figure 12, compared to Figure 11, the interface cover 4 is opened from the closed position. Specifically, refer to Figure 13. At this time, the first protrusion 41 of the interface cover 4 contacts the first part 31 of the rotating member 3, and the rotation of the interface cover 4 drives the rotation of the rotating member 3.
[0108] As the interface cover 4 continues to rotate, as shown in Figures 14 and 15, during the opening process of the interface 13 plate, the rotating component 3 is driven to rotate around the second direction. The second part 32 of the rotating component 3 is provided with a second protrusion 33 on the side facing the pneumatic valve 6, and the pneumatic valve 6 is provided with a third protrusion 61 on the side facing the rotating component 3. The second protrusion 33 and the third protrusion 61 are configured to cooperate. The second protrusion 33 on the rotating component 3 contacts the third protrusion 61 of the pneumatic valve 6, driving the pneumatic valve 6 to rotate around the first direction, so that the pneumatic valve 6 moves from the end position to the start position. That is, the rotating component 3 can play the role of driving the pneumatic valve 6 from the end position back to the start position, replacing the function of a return spring 22.
[0109] As shown in Figure 16, for ease of understanding, please refer to the enlarged partial schematic diagrams 17-19 at different positions in Figure 16. Continue to rotate the interface cover 4. As shown in Figure 17, when the elastic block 21 is raised to the highest point in the preset direction due to the action of the rotating part 3, as shown in Figure 18, the first protrusion 41 drives the rotating part 3 to move to abut against the second limiting part 15, causing the rotating part 3 to stop moving. At this time, the end of the second part 32 of the rotating part 3 abuts against the guide strip 212 of the elastic block 21, so that the length of the rotating part 3 increases in the preset direction, thereby raising the elastic component to the highest point. As shown in Figure 19, there is a gap between the first locking part 2121 of the guide strip 212 and the second locking part 62 of the pneumatic valve 6. At this time, the pneumatic valve 6 is released from the initial position and can be freely rotated from the initial position to the end position.
[0110] As shown in Figures 20 and 21, as the interface cover 4 continues to rotate, the second limiting part 15 limits the rotating part 3, preventing the rotating part 3 from continuing to rotate with the interface cover 4. However, since at least one of the first protrusion 41 and the rotating part 3 is made of elastic material, the first protrusion 41 on the interface cover 4 can bypass the first part 31 of the rotating part 3 and continue to rotate. At this time, the rotating part 3 loses its driving force until the end of the interface cover 4 abuts against the housing 1 and stops rotating. At this time, the spring 22 in the elastic component 2 is released. Due to the action of the spring 22, the elastic block 21 moves in the opposite direction to the preset direction. At this time, the elastic block 21 moves a distance in the opposite direction to the preset direction, and the second latching part 62 contacts the first latching part 2121. The gap between the second latching part 62 and the first latching part 2121 in Figure 19 disappears. When the elastic block 21 moves toward the rotating part 3, that is, when the elastic block 21 moves downward, the second locking part 62 abuts against the first locking part 2121, and the pneumatic valve 6 and the guide bar 212 are limited. At this time, when the patient inhales, the closed space formed between the interface 13 and the pneumatic valve 6 forms a negative pressure, and the airflow is drawn in from the air inlet 12, causing the pneumatic valve 6 to open under the action of the inhaled airflow from the air inlet 12. The pressure difference force drives the pneumatic valve 6 to rotate from the initial position to the end position. The second locking part 62 moves away from the first locking part 2121, and the limitation of the pneumatic valve 6 and the guide bar 212 is released. The elastic potential energy of the elastic component 2 pushes the medicine in the medicine canister 01 to be sprayed out from the spray outlet 71 of the nozzle 7. The airflow drives the pneumatic valve 6 to rotate, and the medicine enters the patient's mouth from the interface 13.
[0111] As shown in Figures 22-24, after the medication is sprayed, the interface cover 4 is rotated in the first direction to seal the interface 13. The first protrusion 41 of the interface cover 4 drives the rotating member 3 to rotate in the first direction, as shown in Figure 23. When the second part 32 of the rotating member 3 contacts the first limiting part 14, it stops rotating. At this time, the rotating member 3 is in the first position. Similarly, since at least one of the first protrusion 41 or the rotating member 3 is made of elastic material, the first protrusion 41 on the interface cover 4 can elastically bypass the rotating member 3 and continue to rotate in the first direction until the interface cover 4 is closed. Here, the first limiting part 14 of the rotating member 3 acts as a locking point for closing the interface cover 4. When the first protrusion 41 on the interface cover 4 elastically bypasses the first part 31 of the rotating member 3, a "click" sound is emitted. Through a simple structural arrangement, the patient is reminded that the breathing-triggered aerosol device provided in this embodiment has been completely closed. At this time, the elastic block 21 is always in the lowest position along the preset direction under the action of the spring 22, which makes the rotating member 3 stay in the first position.
[0112] Specifically, the rotating component 3 has a plate-like structure, and the distance from the end of the first component to the rotating shaft 5 is greater than the distance from the end of the second component to the rotating shaft 5. With this arrangement, the lever arm of the interface cover 4 driving the rotating component 3 is larger during rotation. In other words, under the same torque, the patient needs less effort to drive the interface cover 4. For example, the distance from the end of the first component to the rotating shaft 5 can be equal to the distance from the end of the second component to the rotating shaft 5; or the distance from the end of the first component to the rotating shaft 5 can be less than the distance from the end of the second component to the rotating shaft 5. The specific selection, besides considering the torque, also needs to satisfy the shape of the shell for easy patient gripping.
[0113] As shown in Figures 25-50, another breathing-triggered aerosol device provided in this embodiment of the invention includes:
[0114] The housing 1 has a receiving cavity 11 for accommodating a medicine container, and the housing 1 has an air inlet 12 and an interface 13 that are both connected to the receiving cavity 11;
[0115] The nozzle 7 is located inside the receiving cavity 11 and is disposed on the housing 1, with the nozzle outlet facing the interface 13;
[0116] Rotating component 3 is located in the receiving cavity 11, and the rotating component 3 is rotatably disposed on the housing 1;
[0117] An interface cover 4 is rotatably disposed on the housing 1 for sealing and opening the interface 13; the interface cover 4 at least partially covers the outer surface of the housing 1.
[0118] The button 8 is movably disposed on the housing 1. The button 8 can move relative to the housing 1 in a preset direction. The button 8 can rotate around the preset direction, which is a third direction, for example, clockwise or counterclockwise.
[0119] A pneumatic valve 6 is located in the receiving cavity 11. The pneumatic valve 6 is rotatably mounted on the housing 1. The pneumatic valve 6 has an initial position and an end position relative to the housing 1.
[0120] An elastic component 2 is located in the receiving cavity 11. The elastic component 2 is movably disposed within the housing 1 along a preset direction. The elastic component 2 has a first working position and a second working position relative to the housing 1. When the elastic component 2 is in the first working position, the elastic component 2 has no elastic potential energy. When the elastic component 2 is in the second working position, the elastic component 2 is compressed along the preset direction and stores elastic potential energy. The elastic potential energy is used to provide external force to the medicine container and trigger the medicine container to spray out the medicine. The elastic component 2 includes a spring block 21 and a spring 22. One end of the spring 22 contacts the pressing button 8, and the other end of the spring 22 contacts the spring block 21. When the pressing button is pressed downward along the preset direction... At time 8, the pressing button 8 drives the spring 22 to move downwards. Simultaneously, the spring 22 drives the elastic block 21 to move downwards, and the medicine canister 01 located in the receiving cavity 11 moves downwards as well. The liquid outlet of the medicine canister 01 is fluidly connected to the nozzle 7. The nozzle 7, fixed to the housing 1, moves relative to the medicine canister 01, thus completing the spraying action of the medicine canister 01. For ease of understanding, please refer to Figure 33. A mating part 174 is provided on the inner wall of the housing 1. This mating part 174 is, for example, a guide rail structure, which constrains the elastic block 21 to move up and down within the housing 1. Because the elastic force of the spring 22 is greater than the valve spring pressure of the medicine canister 01, pressing the pressing button 8 will compress the medicine canister 01 to complete the spraying action. The connecting cover 19 in Figure 27 is used to fix the pressing button 8 to the housing 1.
[0121] Referring again to Figure 28, the elastic block 21 includes a retaining ring 213 and an extension 214. A retaining ring opening 213a is provided at the retaining ring 213, which facilitates the insertion of the medicine canister 01 into the internal space of the elastic block 21.
[0122] For ease of understanding, referring to Figure 30, when installing the medicine container 01, the retaining ring 213 constrains the groove of the medicine container 01 to achieve relative fixation between the elastic block 21 and the medicine container 01.
[0123] As shown in Figures 34-36, when the button 8 is pressed down to its lowest position, i.e., after the medicine canister 01 completes its first spray, the button 8 cannot be fixed at this point; that is, once the external force is removed, the button 8 will reset. Referring also to Figures 37-41, when the button 8 rotates axially by a certain angle, the limiting clip 81 on the button 8 undergoes elastic deformation. The limiting clip 81 is made of elastic material; and / or, the housing constraint member 173 is made of elastic material. This allows the limiting clip 81 of the button 8 to cooperate with the housing constraint member 173 on the housing 1 to form a constraint. To further restrict the up-and-down movement of the button 8, the structure of the housing constraint member 173 has a limiting structure in both the upper and lower directions, i.e., an upper constraint 173a and a lower constraint 173b, which constrain the button 8 so that the button 8 is locked in a certain position and cannot rotate or move up and down. At this time, the spring 22 is still in a compressed state.
[0124] As shown in Figures 42-45, when the interface cover 4 is opened, it rotates relative to the housing 1. After opening the interface cover 4, the interface 13 of the breathing-triggered aerosol device provided in this embodiment will be exposed. At this time, the rotating member 3 is rotated downwards. For example, the rotating member is a plate-shaped structure. One end of the rotating member 3 contacts the extension 214 of the elastic block 21. As the rotating member 3 rotates, one end of the rotating member 3 moves upwards, pushing the elastic block 21 upwards. Because the pressing button 8 is locked, the spring 22 will be further compressed. Referring to Figure 45, at the same time, the rotating plate protrusion 34 and the pneumatic valve protrusion 63 are in contact with each other. Because of the rotation of the rotating member 3, the pneumatic valve 6 will also rotate upwards accordingly.
[0125] Continue rotating the rotating part 3 downwards. After rotating the rotating part 3 to a certain angle, that is, when rotating the rotating part 3 rotates to the position shown in Figure 46, as shown in Figure 47, the pneumatic valve protrusion 63 will overlap with the extension locking point 2141 of the elastic block 21 in the vertical direction. When the rotating part 3 releases the rotational force, because the spring 22 is compressed, it will push the elastic block 21 downwards, which will cause the extension locking point 2141 of the elastic block 21 to constrain the pneumatic valve protrusion 63, so that the elastic block 21 is locked. At this time, the spring 22 is still compressed. As shown in Figures 48-50, as the pneumatic valve 6 rotates upwards, the person's lips are pressed against the interface 13. Therefore, the person's mouth, the pneumatic valve 6 and the shell 1 form a closed area 11A. When the person begins to inhale, this closed area 11A will form a negative pressure, so that a certain suction force will be generated on the pneumatic valve 6, which will drive the pneumatic valve 6 to rotate, compress the medicine canister 01 to spray out the spray, and spray out through the nozzle 7, passing through the interface 13 and entering the person's oral cavity.
[0126] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of this disclosure. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.
Claims
1. A breath-activated aerosol device, characterized by, include: A housing having a receiving cavity for accommodating a medicine container, the housing having an air inlet and an interface both communicating with the receiving cavity; A nozzle is located within the receiving cavity and is disposed on the housing, with the nozzle outlet facing the interface; An elastic component is located in the receiving cavity and is movably disposed within the housing. The elastic component has a first position and a second position relative to the housing. When the elastic component is in the first position, it has no elastic potential energy. When the elastic component is in the second position, it is compressed along a preset direction and stores elastic potential energy. The elastic potential energy is used to provide external force to the medicine canister and trigger the medicine canister to spray out the medicine. A rotating component is located in the receiving cavity, and the rotating component is rotatably disposed on the housing; An interface cover, rotatably mounted on the housing, is used to seal and open the interface; When the interface cover seals the interface, the elastic component is not compressed and has no elastic potential energy; when the interface cover rotates to open the interface, the interface cover rotates and pushes the rotating component to rotate, changing the length of the rotating component along the preset direction, so that the rotating component pushes the elastic component, compressing it along the preset direction and storing the elastic potential energy.
2. A breath-activated aerosol device according to claim 1, wherein, The interface cover at least partially covers the outer surface of the housing, and a first protrusion is provided on the inner surface of the interface cover facing the housing. The rotating component is rotatably connected to the housing via a rotating shaft, which divides the rotating component into a first part and a second part. The rotating component has a first position and a second position relative to the housing. When the rotating component changes from the first position to the second position, the first protrusion of the interface cover contacts the first part of the rotating component and provides rotational force, and the second part of the rotating component contacts the elastic component to compress the elastic component along the preset direction.
3. A breath-actuated aerosol device according to claim 2, wherein, It also includes a pneumatic valve located in the receiving cavity, the pneumatic valve being rotatably mounted on the housing, the pneumatic valve having an initial position and an end position relative to the housing; the second part of the rotating member has a second protrusion on the side facing the pneumatic valve; When the pneumatic valve moves from the end position to the initial position, the pneumatic valve blocks the passage between the nozzle and the interface. The second part of the rotating member contacts the elastic component to compress the elastic component along the preset direction. The elastic component and the pneumatic valve form a constraint. The second protrusion of the rotating member contacts the pneumatic valve and provides rotational force to the pneumatic valve. When the pneumatic valve moves from the initial position to the final position, the pneumatic valve connects the passage between the nozzle and the interface. When the pneumatic valve is in the initial position, the rotating component is in the second position, the elastic component releases the constraint on the pneumatic valve, the interface cover opens to expose the interface, and the interface is used to contact the patient's mouth. When the patient inhales, a negative pressure is formed in the closed space formed between the interface and the pneumatic valve. The pressure difference force drives the pneumatic valve to rotate from the initial position to the final position.
4. A breath-actuated aerosol device according to claim 3, wherein, The pneumatic valve has a third protrusion on the side facing the rotating component, and the second protrusion is configured to cooperate with the third protrusion. When the rotating member rotates from the first position to the second position, the rotating member compresses the elastic component along the preset direction, and the second protrusion and the third protrusion cooperate to drive the pneumatic valve to rotate to the initial position.
5. A breath-actuated aerosol device according to claim 4, wherein, A first limiting part and a second limiting part are provided on the inner wall of the housing; When the rotating member is in the first position, the second part of the rotating member abuts against the first limiting part, restricting the rotating member from rotating around the first direction; When the rotating member is in the second position, the first part of the rotating member abuts against the second limiting part, restricting the rotating member from rotating around the second direction, which is opposite to the second direction.
6. A breath-actuated aerosol device according to claim 5, wherein, A third limiting part is also provided on the inner wall of the housing. When the pneumatic valve is in the initial state, the third limiting part abuts against the pneumatic valve, restricting the pneumatic valve from rotating around the first direction.
7. A breath-actuated aerosol device according to claim 6, wherein, The elastic component includes: an elastic block and a spring arranged along the preset direction; the housing includes a body and a cover detachably connected to the body, the body having an opening communicating with the receiving cavity, and when the housing is disassembled, the opening of the body is exposed, and the elastic component and the medicine canister can be pulled out or inserted from the opening; the spring is located between the elastic block and the cover, the elastic block has an internal space for accommodating at least part of the medicine canister, the nozzle is located outside the internal space of the elastic block, and the nozzle communicates with the medicine canister.
8. A breath-actuated aerosol device according to claim 7, wherein, The elastic block includes a guide strip that extends along the preset direction away from the cover. The end of the guide strip away from the cover is in contact with or away from the rotating member. The guide strip has a first locking member, and the pneumatic valve has a second locking member. The second locking member cooperates with the first locking member. When the elastic block moves toward the rotating member, the second locking member abuts against the first locking member, and the pneumatic valve and the guide strip are limited to achieve the rotation of the pneumatic valve along with the guide strip. When the pneumatic valve moves from the initial position to the end position, the second locking member moves away from the first locking member, and the limitation of the pneumatic valve and the guide strip is released.
9. A breath-actuated aerosol device according to claim 8, wherein, When the elastic potential energy of the elastic component is released, the pneumatic valve is in the end position, and the third protrusion is parallel and attached to the guide strip of the elastic component.
10. A breath-activated aerosol device according to claim 5, wherein, The rotating component is made of an elastic material; And / or, the first protrusion is made of an elastic material.