Rotating mechanism, dosage protection mechanism, breath triggering apparatus, and dry powder inhaler

Abstract

Provided are a rotating mechanism (2), a dosage protection mechanism (3), a breath triggering apparatus (100), and a dry powder inhaler (800). The rotating mechanism (2) is applied to the breath triggering apparatus (100), and the rotating mechanism (2) comprises: a rotating shaft (22), an outer side surface of which is provided with a notch (221); and a baffle (21) connected to the outer side surface of the rotating shaft (22), wherein the rotating mechanism (2) is rotatable between a first position and a second position, and when in the first position, blocks a first airflow channel of the breath triggering apparatus (100); when moving from the first position to the second position, the baffle (21) rotates around the rotating shaft (22) to open the first airflow channel. By means of the above configuration, the problem of inadequate drug powder deaggregation in the prior art can be effectively resolved.

Description

Rotating mechanism, dosage protection mechanism, breathing trigger device and dry powder inhaler

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Chinese patent application 202311874076.2 filed on December 29, 2023, and all of its contents are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of inhalation devices, and in particular to a rotation mechanism, a dosage protection mechanism, a breathing trigger device and a dry powder inhaler. Background Art

[0004] Blister-type dry powder inhalers typically use airflow to draw powder from a dosing chamber into a mouthpiece for inhalation. However, existing blister-type dry powder inhalers cannot guarantee the protection of powder during low-speed airflow. During inhalation, the airflow does not effectively deagglomerate the powder, resulting in low powder utilization and potential powder waste.

[0005] Summary of the Invention

[0006] The present application mainly provides a rotation mechanism, a dosage protection mechanism, a respiratory trigger device and a dry powder inhaler to solve the problem of poor powder deagglomeration effect of dry powder inhalers in the prior art.

[0007] To solve the above technical problems, the present application adopts a technical solution: to provide a rotation mechanism for use in a breathing trigger device, comprising:

[0008] The rotating shaft has a notch on its outer side;

[0009] a baffle connected to the outer side of the rotating shaft;

[0010] The rotating mechanism is capable of rotating between a first position and a second position, and when in the first position, blocks the first air flow channel of the breathing trigger device; when moving from the first position to the second position, the baffle rotates around the rotating shaft to open the first air flow channel.

[0011] Wherein, one end of the rotating shaft is connected to a protruding rod;

[0012] A groove is provided on the side surface of one end of the rotating shaft, one end of the protruding rod is connected to the side wall of the groove, and an angle is formed between the protruding rod and the baffle.

[0013] The baffle has a first surface provided with a flange, which is provided at an end of the baffle away from the rotating shaft and extends from one side to the other side along an edge of the baffle away from the rotating shaft.

[0014] Wherein, one end of the flange away from the rotating shaft is provided with a chamfer.

[0015] In which, the baffle also has a second surface opposite to the first surface, and the second surface is provided with a stopper; the stopper is arranged at the end of the baffle away from the rotating shaft, and extends from one side to the other side along the edge of the end of the baffle away from the rotating shaft; along the direction parallel to the second surface, one end of the stopper is connected to the second surface, and the other end extends out of the second surface to form a limiting portion.

[0016] In order to solve the above technical problems, another technical solution adopted by this application is to provide a dose protection mechanism applied to the respiratory trigger device.

[0017] The dose protection mechanism is movable between a third position and a fourth position; the dose protection mechanism includes a plate-shaped portion having a first communication hole and a second communication hole spaced apart from each other;

[0018] When the dose protection mechanism is in the third position, the plate-shaped portion blocks the second airflow channel of the breathing trigger device, and the second communicating hole connects the external atmosphere and the airway compartment of the breathing trigger device; when the dose protection mechanism is in the fourth position, the first communicating hole connects the second airflow channel, and the plate-shaped portion is used to block the airway compartment.

[0019] Wherein, the dose protection mechanism further includes a main body portion, and the main body portion is provided with a limit member.

[0020] Wherein, the limiting member is a convex column obliquely arranged on a surface of the main body, and the convex column has a free end.

[0021] Wherein, the first communicating hole and the second communicating hole are both circular holes, and are spaced and aligned in the moving direction of the dose protection mechanism;

[0022] The main body is further provided with a receiving groove.

[0023] To solve the above technical problems, another technical solution adopted by the present application is to provide a breathing trigger device, comprising:

[0024] airway compartment;

[0025] a rotating mechanism capable of rotating between a first position and a second position;

[0026] a dose protection mechanism movable between a third position and a fourth position;

[0027] Wherein, when the negative pressure in the airway chamber of the respiratory trigger device is greater than a preset threshold, the external air pressure pushes the rotating mechanism to rotate from the first position to the second position, the rotating mechanism releases the limit on the dose protection mechanism, and the dose protection mechanism moves from the third position to the fourth position; and / or,

[0028] When the negative pressure in the airway chamber of the breath trigger device is greater than a preset threshold, the rotation mechanism and the dose protection mechanism move to change the communication mode of the airflow channel of the breath trigger device.

[0029] Wherein, the rotating mechanism is the rotating mechanism described above;

[0030] The dose protection mechanism is the dose protection mechanism described above;

[0031] The respiratory trigger device further includes a drug delivery chamber spaced apart from the airway chamber; the airway chamber is connected to the drug delivery chamber via a second airflow channel; the airway chamber is connected to the external atmosphere via the first airflow channel or the third airflow channel;

[0032] Among them, when the negative pressure in the airway chamber is greater than a preset threshold, the external air pressure pushes the rotating mechanism to rotate from the first position to the second position, so that the first airflow channel is opened; when the dose protection mechanism is in the third position, the second airflow channel is blocked, the airway chamber is not connected to the drug delivery chamber, and the third airflow channel is opened, and the airway chamber is connected to the external atmosphere through the third airflow channel; when the dose protection mechanism is in the fourth position, the second airflow channel is opened to connect the airway chamber and the drug delivery chamber, and the third airflow channel is blocked.

[0033] Wherein, the breathing triggering device further includes:

[0034] The bracket has the airway compartment and the drug delivery compartment spaced apart from each other; the rotating mechanism is rotatably mounted on the bracket, and the dose protection mechanism is movably mounted on the bracket;

[0035] an elastic member, arranged in contact with the dose protection mechanism, and configured to drive the dose protection mechanism to move from the third position to the fourth position;

[0036] When the rotating mechanism rotates from the first position to the second position, the rotating mechanism releases the limit on the dose protection mechanism, so that the elastic member drives the dose protection mechanism to move from the third position to the fourth position.

[0037] The dosing chamber has a first row of powder holes, and the airway chamber has a second row of powder holes; the first row of powder holes and the second row of powder holes are arranged in an aligned and spaced relationship to form a portion of the second airflow channel; the bracket is further provided with a third communicating hole, and the third communicating hole is spaced apart from the airway chamber;

[0038] In which, when the dose protection mechanism is in the third position, the first connecting hole and the first row of powder holes are staggered and block the first row of powder holes; when the dose protection mechanism is in the third position, the second connecting hole and the third connecting hole are aligned and connected to form a part of the third air flow channel; when the dose protection mechanism is in the fourth position, the first connecting hole is located between the first row of powder holes and the second row of powder holes, so that the first row of powder holes, the first connecting hole and the second row of powder holes are aligned and connected in sequence to form the second air flow channel.

[0039] Wherein, the breath trigger device further includes a translation mechanism; the translation mechanism is movably arranged on the bracket and is capable of moving between a fifth position and a sixth position; the translation mechanism is respectively arranged in contact with the rotation mechanism and the dose protection mechanism;

[0040] The translation mechanism moves from the sixth position to the fifth position, drives the dose protection mechanism to return from the fourth position to the third position, and drives the rotation mechanism to return from the second position to the first position.

[0041] The dose protection mechanism is slidably mounted on the bracket; the dose protection mechanism includes the main body, the plate-shaped portion is connected to a side of the main body away from the elastic member; one end of the rotating shaft is connected to the protruding rod, and the main body is provided with the accommodating groove;

[0042] The translation mechanism includes a supporting member and a push rod connected to each other, the supporting member abuts against the protruding rod, and the push rod is at least partially disposed in the accommodating groove;

[0043] When the translation mechanism moves from the sixth position to the fifth position, the support member pushes the protruding rod to reset the rotation mechanism from the second position to the first position, and the push rod pushes the main body to reset the dose protection mechanism from the fourth position to the third position.

[0044] Wherein, along the first direction, the airway compartment and the drug delivery compartment are spaced apart; along the second direction, the first airflow channel and the rotating mechanism are arranged on one side of the airway compartment; the dose protection mechanism slides along the second direction; the axial direction of the rotating shaft is the third direction;

[0045] The first direction, the second direction and the third direction are perpendicular to each other.

[0046] To solve the above technical problems, another technical solution adopted in this application is to provide a dry powder inhaler, comprising:

[0047] A housing assembly, comprising a housing and a nozzle;

[0048] A breathing trigger device is disposed in the housing, wherein the breathing trigger device is any of the breathing trigger devices described above;

[0049] Wherein, the suction nozzle is communicated with the airway compartment.

[0050] In some embodiments, the dry powder inhaler further comprises:

[0051] The cover body is rotatably connected to the shell assembly, and the cover body can rotate between a seventh position and an eighth position, and when the cover body rotates from the eighth position to the seventh position, it drives the translation mechanism to move from the sixth position to the fifth position; when the cover body is in the seventh position, the suction nozzle is covered, and the rotation mechanism is limited to the first position by the translation mechanism; when the cover body is in the eighth position, the suction nozzle is exposed, and the limitation on the translation mechanism is released.

[0052] In some embodiments, the cover is connected to the translation mechanism, and the translation mechanism is driven to slide between the fifth position and the sixth position by the cover rotating between the seventh position and the eighth position; or

[0053] The bracket is further provided with an elastic arm, and when the translation mechanism is in the fifth position, the elastic arm abuts against the translation mechanism; when the cover body is in the eighth position, the elastic arm drives the translation mechanism to slide from the fifth position to the sixth position; or,

[0054] When the rotating mechanism rotates from the first position to the second position, the translation mechanism is driven to slide from the fifth position to the sixth position; or,

[0055] When the dose protection mechanism moves from the third position to the fourth position, the translation mechanism is driven to slide from the fifth position to the sixth position.

[0056] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a rotation mechanism, a dosage protection mechanism, a respiratory trigger device, and a dry powder inhaler. The rotation mechanism is applied to the respiratory trigger device, and the rotation mechanism includes: a rotating shaft having a notch on the outer side surface; a baffle connected to the outer side surface of the rotating shaft; wherein the rotation mechanism can rotate between a first position and a second position, and when in the first position, it blocks the first airflow channel of the respiratory trigger device; when moving from the first position to the second position, the baffle rotates around the rotating shaft to open the first airflow channel. The above arrangement can effectively solve the problem of poor deagglomeration effect of medicinal powder in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0058] FIG1 is a schematic structural diagram of the dry powder inhaler provided by the present application in a first state;

[0059] FIG2 is an exploded schematic diagram of the dry powder inhaler provided in FIG1 ;

[0060] FIG3 is a schematic structural diagram of the breathing trigger device of the dry powder inhaler provided in FIG1 when the dry powder inhaler is in a first state;

[0061] FIG4A is a cross-sectional schematic diagram of the breath triggering device provided in FIG3 ;

[0062] FIG4B is a partial enlarged schematic diagram of FIG4A ;

[0063] FIG5 is another cross-sectional schematic diagram of the breath triggering device provided in FIG3 ;

[0064] FIG6 is a schematic structural diagram of the dry powder inhaler provided by the present application in a second state;

[0065] FIG7 is a schematic structural diagram of the breathing trigger device of the dry powder inhaler provided in FIG6 when the dry powder inhaler is in the second state;

[0066] FIG8A is a cross-sectional schematic diagram of the breath-triggered device provided in FIG7 ;

[0067] FIG8B is a partially enlarged schematic diagram of FIG8A ;

[0068] FIG9A is another cross-sectional schematic diagram of the breath-triggered device provided in FIG7 ;

[0069] FIG9B is a partially enlarged schematic diagram of FIG9A ;

[0070] FIG10 is a schematic structural diagram of the mouthpiece of the dry powder inhaler provided in FIG1 :

[0071] FIG11 is a schematic structural diagram of a support at an angle of the respiratory trigger device provided in FIG3 ;

[0072] FIG12 is a schematic structural diagram of the bracket provided in FIG11 from another angle;

[0073] FIG13 is a partially enlarged schematic diagram of a cross section of the stent provided in FIG11 ;

[0074] FIG14 is a partially enlarged schematic diagram of another cross section of the stent provided in FIG11;

[0075] FIG15 is a schematic structural diagram of the rotation mechanism of the breathing trigger device provided in FIG3 at an angle;

[0076] FIG16 is a schematic structural diagram of the rotation mechanism provided in FIG15 from another angle;

[0077] FIG17 is a schematic structural diagram of a dose protection mechanism of the breath trigger device provided in FIG3 ;

[0078] FIG18 is a schematic structural diagram of the translation mechanism of the breathing trigger device provided in FIG3 ;

[0079] FIG19 is a schematic structural diagram of an embodiment of an airway structure of a dry powder inhaler provided by the present application;

[0080] FIG20 is a schematic cross-sectional view of the airway structure provided in FIG19;

[0081] FIG21 is another cross-sectional schematic diagram of the airway structure provided in FIG19;

[0082] FIG22 is a schematic structural diagram of the airway compartment of the airway structure provided in FIG19;

[0083] FIG23 is a schematic top view of the manifold of the airway structure provided in FIG19;

[0084] FIG24 is a bottom view of the manifold provided in FIG23;

[0085] FIG25 is a schematic structural diagram of the cover of the dry powder inhaler provided in FIG1 ;

[0086] FIG26 is a schematic structural diagram of an embodiment of a winding device provided by the present application;

[0087] FIG27 is a schematic cross-sectional view of the winding device provided in FIG25 ;

[0088] FIG28 is a schematic structural diagram of the belt reel rod of the reeling device provided in FIG25;

[0089] FIG29 is a schematic top view of the structure of the belt reel gear of the reeling device provided in FIG25;

[0090] FIG30 is a bottom view of the structure of the tape reel gear provided in FIG29;

[0091] Figure 31 is a schematic structural diagram of the corrugated gasket of the winding device provided in Figure 25.

[0092] Explanation of the accompanying drawings: Dry powder inhaler 800; breath trigger device 100; bracket 1; third air inlet 10; airway chamber 11; second row of powder holes 111; annular side wall 112; first side wall 1121; second side wall 1122; third side wall 1123; fourth side wall 1124; bottom wall 113; top wall 114; first fin 115; second fin 116; first airway portion 117; second airway portion 118; mixing airway portion 119; vortex airway 110; drug delivery chamber 12; first row of powder holes 121; vent 122; first airflow channel Q1; second airflow channel Q2; third airflow channel Q3 Channel Q3; air inlet channel Q4; first direction A1; second direction A2; third direction A3; elastic arm 13; third connecting hole 14; air outlet hole 15; first air inlet 16; second air inlet 17; bracket body 18; manifold 19; embedded portion 191; annular embedded section 1911; first embedded section 1912; second embedded section 1913; cover portion 192; connecting portion 193; rotating mechanism 2; baffle 21; first surface 211; flange 213; second surface 212; stopper 214; limiting portion 2141; rotating shaft 22; notch 221; groove 222; protruding rod 2 3; dose protection mechanism 3; plate-shaped portion 31; first communicating hole 311; second communicating hole 312; position limiting member 32; main body portion 33; accommodating groove 331; notch 34; elastic member 4; translation mechanism 5; support member 51; support portion 511; connecting portion 512; push rod 52; protrusion 53; medicine strip 6; substrate strip 61; medicine accommodating portion 62; medicine strip accommodating groove 7; housing assembly 200; housing 201; external air inlet 2011; grille 2012; first housing 206; second housing 207; first protrusion 208; second protrusion 209; nozzle 202; annular surrounding portion 203; surrounding wall 204; recessed portion 205; cover body 300; arc-shaped portion 301; rotating portion 302; unwinding wheel 400; medicine tape mounting shaft 401; cover sheet winding wheel 500; medication wheel 600; substrate winding wheel 700; winding device 900; tape rod 91; rod-shaped portion 911; first clamping portion 912; second clamping portion 913; first rod segment 914; second rod segment 915; first clamping slot 916; second clamping slot 917; tape winding gear 92; center hole 921; limiting slot 922; receiving slot 923; gasket 93; rigid gasket 931; elastic gasket 932. DETAILED DESCRIPTION

[0093] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0094] The terms "first", "second" and "third" in the embodiments of the present application are only used for descriptive purposes and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally also include steps or units that are not listed, or may optionally also include other steps or units inherent to these processes, methods, products or devices.

[0095] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0096] Referring to Figures 1 to 10, Figure 1 is a structural schematic diagram of the dry powder inhaler provided by the present application when in a first state, Figure 2 is an exploded schematic diagram of the dry powder inhaler provided by Figure 1, Figure 3 is a structural schematic diagram of the breathing trigger device provided by Figure 1 when in the first state, Figure 4A is a cross-sectional schematic diagram of the breathing trigger device provided by Figure 3, Figure 4B is a partially enlarged schematic diagram of Figure 4A, Figure 5 is another cross-sectional schematic diagram of the breathing trigger device provided by Figure 3, Figure 6 is a structural schematic diagram of the dry powder inhaler provided by the present application when in a second state, Figure 7 is a structural schematic diagram of the breathing trigger device provided by Figure 6 when in the second state, Figure 8A is a cross-sectional schematic diagram of the breathing trigger device provided by Figure 7, Figure 8B is a partially enlarged schematic diagram of Figure 8A, Figure 9A is another cross-sectional schematic diagram of the breathing trigger device provided by Figure 7, Figure 9B is a partially enlarged schematic diagram of Figure 9A, and Figure 10 is a structural schematic diagram of the mouthpiece of the dry powder inhaler provided by Figure 1.

[0097] Referring to Figures 1 and 2, the present application provides a dry powder inhaler 800, which includes a housing assembly 200, a breath trigger device 100 and a cover body 300. The cover body 300 is rotatably connected to the housing assembly 200. The housing assembly 200 includes a housing 201 and a nozzle 202. The housing 201 and the nozzle 202 are interconnected, and the breath trigger device 100 is disposed in the housing 201. The dry powder inhaler 800 can be switched between a first state and a second state. When the dry powder inhaler 800 is in the first state and the second state, the cover 300 is in different positions. Specifically, when the dry powder inhaler 800 is in the first state, the cover 300 is in a closed state, covering the mouthpiece 202. When the dry powder inhaler 800 is in the second state, the cover 300 is in an open state, exposing the mouthpiece 202, so that the user can inhale powder at the mouthpiece 202. The first state of the dry powder inhaler 800 is the closed cover state, and the second state is the open cover state.

[0098] Referring to Figures 1, 2, 3, 6, and 7, in one embodiment, housing 201 includes a first housing 206 and a second housing 207 that are interconnected. The first housing 206 and the second housing 207 cooperate to form a housing for accommodating components such as the breath triggering device 100. The nozzle 202 is connected to one end of the housing 201. Referring to Figure 6, the housing 201 is provided with an external air inlet 2011, which can be located on the first housing 206 and / or the second housing 207. As shown in FIG1 , when the dry powder inhaler 800 is in a first state, i.e., a closed state, the cover 300 is closed, shielding the external air inlet 2011 and the mouthpiece 202. As shown in FIG6 , when the dry powder inhaler 800 is in a second state, i.e., an open state, the cover 300 is opened, exposing the external air inlet 2011 and the mouthpiece 202. External air can enter the housing assembly 200 through the external air inlet 2011, specifically, into the accommodation space formed by the first housing 206 and the second housing 207. Furthermore, referring to FIG6 , the housing 201 can also be provided with a grille 2012, which protrudes from the outer surface of the housing 201 to prevent the user's lips from blocking the external air inlet 2011 when inhaling from the mouthpiece 202, resulting in poor air intake. In a specific embodiment, the shell 201 may have multiple external air inlets 2011 and multiple grilles 2012. The external air inlets 2011 and the grilles 2012 may be alternately arranged to better prevent the external air inlets 2011 from being blocked by lips, thereby avoiding poor air intake.

[0099] Specifically, referring to Figures 3 to 9B, the breath trigger device 100 includes a bracket 1, a rotating mechanism 2, a dose protection mechanism 3, and an elastic member 4. The bracket 1 has an airway compartment 11 and a drug delivery compartment 12 spaced apart from each other. The airway compartment 11 is connected to the external atmosphere via a first airflow channel Q1, and the airway compartment 11 and the drug delivery compartment 12 are connected via a second airflow channel Q2. The mouthpiece 202 is connected to the airway compartment 11. The rotating mechanism 2 is rotatably mounted on the bracket 1 and is capable of rotating between a first position and a second position. When the dry powder inhaler 800 is in the first state, i.e., the closed lid state, the lid 300 is in the closed state, the rotating mechanism 2 is in the first position, and the rotating mechanism 2 blocks the port of the first airflow channel Q1, preventing the airway compartment 11 from communicating with the external atmosphere via the first airflow channel Q1. When the dry powder inhaler 800 is in the second state, i.e., the lid-open state, and the negative pressure in the airway compartment 11 is greater than a preset threshold, i.e., the flow rate of the user's inhaled airflow is greater than the operating threshold, the external air pressure pushes the rotating mechanism 2 to rotate from the first position to the second position, so that the port of the first airflow channel Q1 is opened. Wherein, the first position is the initial position of the rotating mechanism 2 when the breathing trigger device 100 is not triggered, and the second position is the final position of the rotating mechanism 2 after the breathing trigger device 100 is triggered. That is, when the airflow velocity during the user's inhalation is large enough to make the negative pressure in the airway compartment 11 greater than the preset threshold, under the pressure difference between the external air pressure and the air pressure in the airway compartment 11, the external air pressure will push the rotating mechanism 2 to rotate so that the port of the first airflow channel Q1 is opened, and the first airflow channel Q1 is connected to the external atmosphere through the port. However, when the airflow velocity during the user's inhalation is small and the negative pressure in the airway compartment 11 is less than or equal to the preset threshold, the rotating mechanism 2 will not rotate under the driving effect of the external air pressure so that the port of the first airflow channel Q1 is opened.

[0100] The dose protection mechanism 3 is movably mounted on the bracket 1 and is movable between a third position and a fourth position. When in the third position, the dose protection mechanism 3 blocks the second airflow channel Q2. When in the fourth position, the second airflow channel Q2 is opened, connecting the airway compartment 11 with the medication compartment 12. Specifically, the third position is the initial position of the dose protection mechanism 3 when the breath triggering mechanism 100 is not triggered. The fourth position is the final position of the dose protection mechanism 3 after the breath triggering mechanism 100 is triggered. The elastic member 4 is disposed in contact with the dose protection mechanism 3 and is used to drive the dose protection mechanism 3 from the third position to the fourth position. When the rotating mechanism 2 is in the first position, the rotating mechanism 2 constrains the dose protection mechanism 3 to the third position. When the rotating mechanism 2 rotates from the first position to the second position, the rotating mechanism 2 releases the constraint on the dose protection mechanism 3, allowing the elastic member 4 to drive the dose protection mechanism 3 from the third position to the fourth position. The elastic member 4 may be a spring or an elastic component of any other structure.

[0101] It can be understood that by setting a breathing trigger device 100 in the dry powder inhaler 800, and the airway compartment 11 in the breathing trigger device 100 is connected to the medicine containing part 62 in the medicine delivery compartment 12 through the second airflow channel Q2, the airway compartment 11 is connected to the external atmosphere through the first airflow channel Q1, and a rotating mechanism 2 is rotatably provided on the bracket 1, so that only when the airflow velocity is large enough when the user inhales and the negative pressure in the airway compartment 11 is greater than the preset threshold value, the rotating mechanism 2 will rotate from the first position to the second position under the push of the external air pressure. The second position is set, thereby opening the port of the first airflow channel Q1. The rotating mechanism 2 releases the restriction on the dose protection mechanism 3, allowing the dose protection mechanism 3 to move from the third position to the fourth position under the action of the elastic member 4, thereby opening the second airflow channel Q2. The airway chamber 11 and the drug delivery chamber 12 can be connected through the second airflow channel Q2. The powder in the drug holding portion 62 in the drug delivery chamber 12 can then enter the airway chamber 11 through the second airflow channel Q2, be deagglomerated by the gas, and then be inhaled by the user at the mouthpiece 202. In other words, by providing the breath triggering device 100, the second airflow channel Q2 is opened only when the airflow velocity during the user's inhalation is sufficiently high. This ensures that the high-speed airflow deagglomerates the powder in the drug holding portion 62 in the drug delivery chamber 12 during the user's inhalation, thereby improving the utilization rate of the powder, reducing powder waste, and solving the problem of poor powder deagglomeration in dry powder inhalers in the prior art.

[0102] In one embodiment, the breath triggering device 100 further includes a translation mechanism 5 movably mounted on the bracket 1 and capable of moving between a fifth position and a sixth position. The translation mechanism 5 is disposed in contact with the rotation mechanism 2 and the dose protection mechanism 3, respectively. When the translation mechanism 5 moves from the sixth position to the fifth position, it can drive the dose protection mechanism 3 to reset from the fourth position to the third position and drive the rotation mechanism 2 to reset from the second position to the first position. In other words, the movement of the translation mechanism 5 can drive the rotation mechanism 2 and the dose protection mechanism 3 to reset.

[0103] Referring to Figures 11 to 18, Figure 11 is a structural schematic diagram of the bracket at one angle of the breathing trigger device provided in Figure 3, Figure 12 is a structural schematic diagram of the bracket at another angle provided in Figure 11, Figure 13 is a partially enlarged schematic diagram of a cross-section of the bracket provided in Figure 11, Figure 14 is a partially enlarged schematic diagram of another cross-section of the bracket provided in Figure 11, Figure 15 is a structural schematic diagram of the rotating mechanism at one angle of the breathing trigger device provided in Figure 3, Figure 16 is a structural schematic diagram of the rotating mechanism provided in Figure 15 at another angle, Figure 17 is a structural schematic diagram of the dose protection mechanism of the breathing trigger device provided in Figure 3, and Figure 18 is a structural schematic diagram of the translation mechanism of the breathing trigger device provided in Figure 3.

[0104] 4A, 4B and 8A, 8B, the airway chamber 11 has a second row of powder holes 111, and the drug delivery chamber 12 has a first row of powder holes 121. The first row of powder holes 121 and the second row of powder holes 111 are aligned and spaced apart, forming a portion of the second airflow channel Q2. It should be noted that "alignment" in this application can be complete or partial alignment, as long as the projections in a certain direction at least partially overlap, it can be considered an alignment arrangement. For example, the first row of powder holes 121 and the second row of powder holes 111 are arranged in alignment, and the diameter of the first row of powder holes 121 can be equal to the diameter of the second row of powder holes 111, and the projections of the first row of powder holes 121 and the second row of powder holes 111 completely overlap, that is, the first row of powder holes 121 and the second row of powder holes 111 are completely aligned; or, the diameter of the first row of powder holes 121 is equal to the diameter of the second row of powder holes 111, and the projections of the first row of powder holes 121 and the second row of powder holes 111 only partially overlap, then the first row of powder holes 121 and the second row of powder holes 111 are partially aligned, and the other part is misaligned; the diameter of the first row of powder holes 121 is larger than the diameter of the second row of powder holes The diameter of the powder holes 111, the projection of the second row of powder holes 111 falls within the projection range of the first row of powder holes 121, and the projections of the first row of powder holes 121 and the second row of powder holes 111 partially overlap, then the first row of powder holes 121 and the second row of powder holes 111 are partially aligned; or, the diameter of the first row of powder holes 121 is larger than the diameter of the second row of powder holes 111, and the projections of the second row of powder holes 111 only partially fall within the projection range of the first row of powder holes 121, then the first row of powder holes 121 and the second row of powder holes 111 are partially aligned. The above multiple situations can all be referred to as the alignment setting of the first row of powder holes 121 and the second row of powder holes 111. Preferably, the first row of powder holes 121 and the second row of powder holes 111 have the same shape. For example, the first row of powder holes 121 and the second row of powder holes 111 are both round holes. The first row of powder holes 121 and the second row of powder holes 111 have the same diameter and are completely aligned, which is more conducive to the powder from the first row of powder holes 121 into the second row of powder holes 111, reducing the waste of powder.

[0105] Specifically, the top wall 114 of the dosing bin 12 is spaced apart from the bottom wall 113 of the airway bin 11, the second row of powder holes 111 is provided on the bottom wall 113 of the airway bin 11, and the first row of powder holes 121 is provided on the top wall 114 of the dosing bin 12. Referring to FIG17 , the dose protection mechanism 3 includes a plate-shaped portion 31, which is at least partially movably provided between the top wall 114 of the dosing bin 12 and the bottom wall 113 of the airway bin 11. The plate-shaped portion 31 has a first communication hole 311. When the dose protection mechanism 3 is in the third position, the first communication hole 311 and the first row of powder holes 121 are offset, and the dose protection mechanism 3 blocks the first row of powder holes 121. Specifically, the plate-shaped portion 31 blocks the first row of powder holes 121, preventing communication with the second airflow channel Q2. When the dose protection mechanism 3 is in the fourth position, the first communication hole 311 is located between the first row of powder holes 121 and the second row of powder holes 111, so that the first row of powder holes 121, the first communication hole 311, and the second row of powder holes 111 are aligned and connected to form the second airflow channel Q2. That is, when the dose protection mechanism 3 is in the third position, the second airflow channel Q2 is blocked. When the dose protection mechanism 3 is in the fourth position, the second airflow channel Q2 is connected. The relationship between the negative pressure in the airway chamber 11 and a preset threshold determines the movement state of the rotation mechanism 2, thereby controlling the movement state of the dose protection mechanism 3 between the third and fourth positions, switching between the blocked and connected states of the second airflow channel Q2. This ensures that the second airflow channel Q2 is connected and the powder in the first row of powder holes 121 is inhaled only when the airflow velocity is sufficiently high during inhalation and the negative pressure in the airway chamber 11 is greater than the preset threshold. This facilitates the deagglomeration of the powder by the airflow and improves the powder utilization rate. At the same time, when the dose protection mechanism 3 is in the third position, the medicine powder is still kept in a relatively closed state to prevent the medicine powder from leaking out or being contaminated.

[0106] Referring to Figures 3, 4A, 4B, 7, 8A, 8B, and 15-17, the rotation mechanism 2 includes a baffle 21 and a rotating shaft 22 connected to each other. The rotating shaft 22 is rotatably connected to the bracket 1. The baffle 21 is used to block the first airflow channel Q1. In one specific embodiment, as shown in Figures 3, 7, 15, and 16, the baffle 21 is flat and has a first surface 211 and a second surface 212 facing each other. The first surface 211 is the surface of the baffle 21 facing away from the airway chamber 11, and the second surface 212 is the surface of the baffle 21 facing the airway chamber 11. The first surface 211 is provided with a flange 213, and the second surface 212 is provided with a stopper 214. The shape of the flange 213 matches the cross-sectional shape of the sidewall of the port of the first airflow channel Q1, so that the flange 213 can better cooperate with the sidewall of the port of the first airflow channel Q1 to block the port of the first airflow channel Q1. The flange 213 is located on the side of the baffle 21 away from the airway compartment 11, and the stopper 214 is located on the side of the baffle 21 closer to the airway compartment 11. Both the flange 213 and the stopper 214 are disposed on the end of the baffle 21 away from the rotating shaft 22. One end of the stopper 214 is connected to the second surface 212, and the other end extends beyond the second surface 212 in a direction parallel to the second surface 212, forming a stopper 2141. Specifically, the flange 213 is smaller than the stopper 214 in a direction parallel to the second surface 212, and larger than the stopper 214 in a direction perpendicular to the baffle 21. Along the axial direction of the rotating shaft 22, both the flange 213 and the stopper 214 extend from one side of the baffle 21 to the other side of the baffle 21. When the rotating mechanism 2 is in the first position, the flange 213 and the stopper 214 can cooperate with the suction nozzle 202 to block the first airflow channel Q1.

[0107] Specifically, as shown in Figures 3, 4A, 4B, 8A, 8B and 10, the surface of the nozzle 202 near the airway chamber 11 is connected to an annular surrounding portion 203, and the annular surrounding portion 203 is used to cooperate with the airway chamber 11 and the bracket 1 to form the first airflow channel Q1. The annular surrounding portion 203 includes a surrounding wall 204, and the surrounding wall 204 is spaced apart from the airway chamber 11. The bracket 1, the rotating mechanism 2, the annular surrounding portion 203 and the airway chamber 11 are jointly formed to form the first airflow channel Q1. The surrounding wall 204 is the side wall of the port of the first airflow channel Q1, and the rotating mechanism 2 is arranged at the port position of the first airflow channel Q1. A recessed portion 205 is provided on the end surface of the enclosing wall 204 near the dose protection mechanism 3. In one embodiment, the recessed portion 205 is arc-shaped, and the flange 213 is also arc-shaped. When the rotating mechanism 2 is in the first position (i.e., the initial position of the rotating mechanism 2 when the breath triggering device 100 is not triggered), the baffle 21 is fully aligned with the enclosing wall 204. The flange 213, which is located away from the rotating shaft 22, is an arc-shaped surface and abuts against the bottom surface of the recessed portion 205 to block the end of the first airflow channel Q1. When the baffle 21 rotates from the first position to the second position, the end of the first airflow channel Q1 is opened. After external air enters the housing 201, it enters the first airflow channel Q1 through the gap between the flange 213 of the baffle 21 and the bottom surface of the recessed portion 205 of the enclosing wall 204. From there, it enters the airway chamber 11 through the first airflow channel Q1, thereby facilitating the deagglomeration of the drug powder within the airway chamber 11.

[0108] It will be appreciated that the flange 213 protrudes from the first surface 211. During the rotation of the baffle 21 about the rotation axis 22 from the first position to the second position, the flange 213 ensures that the cross-sectional area of ​​air entering the first airflow channel Q1 remains substantially consistent throughout the entire process. Specifically, the distance between the flange 213 and the bottom wall of the recessed portion 205 remains substantially consistent, thereby ensuring consistency in the inhalation resistance throughout the movement of the rotating mechanism 2 and preventing a sudden change in the inhalation resistance of the dry powder inhaler 800 when the baffle 21 rotates due to the lack of the flange 213. Only when the user's inhalation airflow velocity is sufficiently high and the negative pressure within the airway chamber 11 is sufficiently high will the baffle 21 rotate about the rotation axis 22 to a relatively large angle, allowing the flange 213 to fully rotate until it is no longer in contact with the bottom surface of the recessed portion 205 of the enclosing wall 204, thereby opening the port of the first airflow channel Q1 and allowing the first airflow channel Q1 to communicate with the external atmosphere. That is, the flange 213 can further ensure that when the user's inhalation airflow velocity is large enough and the negative pressure in the airway chamber 11 is greater than the preset threshold, the first airflow channel Q1 is opened to further enhance the deagglomeration effect of the medicine powder and avoid waste of medicine powder; at the same time, the flange 213 provided on the first surface 211 can also play a certain air gathering effect.

[0109] Furthermore, in some embodiments, as shown in Figures 15 and 16 , the end of the flange 213 away from the rotation axis 22 is further provided with a chamfer. The chamfer can be an oblique angle or a rounded angle. It is understood that providing a chamfer on the end of the flange 213 away from the rotation axis 22 can effectively prevent the flange 213 from interfering with the surrounding wall 204 during the process of the baffle 21 rotating about the rotation axis 22 from the first position to the second position, thereby preventing the baffle 21 from rotating. This can ensure smooth rotation of the rotating mechanism 2 between the first and second positions.

[0110] The stopper 214 is located on the side of the enclosing wall 204 close to the airway chamber 11. In a specific embodiment, the stopper 214 is arc-shaped, and the surface of the stopper 214 close to the enclosing wall 204 is flat. The limiting portion 2141 of the stopper 214 extends from the second surface 212 and abuts against the inner side surface of the enclosing wall 204 to further block the port of the first airflow channel Q1, ensuring that when the negative pressure in the airway chamber 11 is less than or equal to the preset threshold, the limiting portion 2141 of the stopper 214 of the baffle 21 can cooperate with the enclosing wall 204 of the suction nozzle 202 to better block the first airflow channel Q1, avoiding the problem that the first airflow channel Q1 is not blocked in place, resulting in gas entering the airway chamber 11 through the first airflow channel Q1 and causing waste of medicine powder; at the same time, when the rotating mechanism 2 is reset from the second position to the first position, the limiting portion 2141 can also abut against the inner side surface of the enclosing wall 204, thereby limiting the rotating mechanism 2 to the first position.

[0111] In other embodiments, the flange 213 and the stopper 214 may also be set to other shapes, as long as they are consistent with the cross-sectional shape of the side wall of the port of the first airflow channel Q1, so as to better seal the port of the first airflow channel Q1; the flange 213 and the stopper 214 may not be set on the baffle 21, and when the rotating mechanism 2 is in the first position, the end face of the baffle 21 away from the rotating shaft 22 may directly abut against the surrounding wall 204 of the suction nozzle 202 to seal the first airflow channel Q1, or only the flange 213 or only the stopper 214 may be set, and the design can be carried out as needed.

[0112] The dose protection mechanism 3 further includes a stopper 32. A notch 221 is formed on the outer side of the rotating shaft 22. When the rotating mechanism 2 is in the first position, the stopper 32 abuts against the outer side of the rotating shaft 22, thereby limiting the dose protection mechanism 3 to the third position. When the rotating mechanism 2 is in the second position, the stopper 32 corresponds to the notch 221, thereby releasing the limit on the dose protection mechanism 3. Specifically, when the rotating mechanism 2 rotates to the second position, the stopper 32 no longer abuts against the outer side of the rotating shaft 22. The notch 221 on the outer side of the rotating shaft 22 rotates to a position corresponding to the stopper 32. The stopper 32 then corresponds to the notch 221, thereby freeing the rotating shaft 22 from limiting the dose protection mechanism 3 and facilitating movement of the dose protection mechanism 3.

[0113] In one embodiment, referring to Figures 3, 4A, 4B, 7, 8A, 8B, and 17, the dose protection mechanism 3 is slidably mounted on the bracket 1. The dose protection mechanism 3 further comprises a body portion 33, a plate-shaped portion 31 connected to a side of the body portion 33 away from the elastic member 4, and a stopper 32, specifically, a protrusion obliquely disposed on a surface of the body portion 33. When the rotation mechanism 2 is in the first position, the free end of the protrusion abuts against the outer side of the rotation shaft 22, thereby limiting the dose protection mechanism 3 to the third position. When the baffle 21 rotates about the rotation shaft 22, the notch 221 on the outer side of the rotation shaft 22 rotates to the position of the free end of the protrusion, causing the free end of the protrusion to slide out of the notch 221, thereby releasing the restriction on the dose protection mechanism 3 and allowing the dose protection mechanism 3 to slide from the third position to the fourth position under the drive of the elastic member 4.

[0114] In other embodiments, the limiting member 32 of the dose protection mechanism 3 may also be configured as other structures. For example, the limiting member 32 may be a groove or notch provided in the body portion 33 of the dose protection mechanism 3. The outer side surface of the rotating shaft 22 may not be provided with the notch 221, but a protrusion may be directly connected to the outer side surface of the rotating shaft 22. When the rotating mechanism 2 is in the first position, the free end of the protrusion abuts within the groove 222 of the body portion 33, thereby limiting the dose protection mechanism 3 in the third position by the protrusion provided on the rotating shaft 22. When the baffle 21 rotates about the rotating shaft 22, the protrusion on the rotating shaft 22 rotates out of the groove 222 of the body portion 33, thereby releasing the limit on the dose protection mechanism 3 and allowing the dose protection mechanism 3 to move from the third position to the fourth position under the driving action of the elastic member 4. As long as the limiting member 32 of the dose protection mechanism 3 is disposed in contact with the rotating mechanism 2, the dose protection mechanism 3 can be limited when the rotating mechanism 2 is in the first position and can be released from the limit on the dose protection mechanism 3 by rotation of the rotating mechanism 2. This is not limited in this application.

[0115] Furthermore, the body 33 of the dose protection mechanism 3 is provided with a receiving groove 331. Specifically, the receiving groove 331 is provided on the surface of the body 33 near the translation mechanism 5. A protruding rod 23 is connected to one end of the rotating shaft 22. Specifically, the protruding rod 23 is connected to the end of the rotating shaft 22 near the translation mechanism 5. Referring to FIG. 18 , the translation mechanism 5 includes a support member 51 and a push rod 52 that are interconnected. The support member 51 abuts the protruding rod 23 on the rotating shaft 22, and the push rod 52 is at least partially disposed within the receiving groove 331. When the translation mechanism 5 moves from the sixth position to the fifth position, the support member 51 pushes the protruding rod 23, thereby resetting the rotation mechanism 2 from the second position to the first position. The push rod 52 pushes the body 33, thereby resetting the dose protection mechanism 3 from the fourth position to the third position.

[0116] Referring to FIG. 25 , FIG. 25 is a schematic structural diagram of the cover of the dry powder inhaler provided in FIG. Referring to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 6 , FIG. 7 , and FIG. 25 , the cover 300 is rotatable between a seventh position and an eighth position. When the cover 300 is in the seventh position, i.e., when the cover 300 is in the closed state, the suction nozzle 202 and the external air inlet 2011 are obscured. When the cover 300 is rotated to the eighth position, i.e., when the cover 300 is in the open state, the suction nozzle 202 and the external air inlet 2011 are exposed.

[0117] Specifically, the cover 300 is generally U-shaped, comprising an arcuate portion 301 and two rotating portions 302 connected to the ends of the arcuate portion 301. The two rotating portions 302 are symmetrically arranged, with one rotating portion 302 located on the side of the first housing 206 away from the second housing 207 and rotatably connected to the center of the outer side of the first housing 206. The other rotating portion 302 is located on the side of the second housing 207 away from the first housing 206 and rotatably connected to the center of the outer side of the second housing 207. The outer sides of the first housing 206 and the second housing 207 are each provided with a first protrusion 208 and a second protrusion 209 spaced apart from each other. The cover 300 can rotate between the first protrusion 208 and the second protrusion 209 along the circumference of the housing assembly 200. The first protrusion 208 and the second protrusion 209 limit the cover 300 to rotation between a seventh position and an eighth position. The first protrusion 208 limits the cover 300 to the seventh position, and the second protrusion 209 limits the cover 300 to the eighth position.

[0118] In a specific embodiment, when the cover body 300 rotates from the eighth position to the seventh position, that is, when the cover body 300 rotates from the open state to the closed state, that is, during the closing process, the cover body 300 can drive the translation mechanism 5 to move from the sixth position to the fifth position, that is, drive the translation mechanism 5 to reset to the initial position, and then the translation mechanism 5 drives the rotation mechanism 2 to reset from the second position to the first position, and drives the dose protection mechanism 3 to reset from the fourth position to the third position.

[0119] Specifically, referring to FIG18 , the support member 51 includes a supporting portion 511 and a connecting portion 512 connected to each other. The push rod 52 is connected to the surface of the connecting portion 512 on the side closest to the dose protection mechanism 3. The translation mechanism 5 also includes a protrusion 53 connected to the end of the connecting portion 512 away from the supporting portion 511. The supporting portion 511 is configured to abut against the protrusion 23 on the rotating shaft 22. When the translation mechanism 5 moves from the sixth position to the fifth position, the protrusion 23 is pushed, thereby resetting the rotation mechanism 2 from the second position to the first position. When the cover body 300 rotates from the eighth position to the seventh position, the side surface of the rotating portion 302 of the cover body 300 abuts against the protrusion 53, thereby pushing the protrusion 53 of the translation mechanism 5 by the cover body 300, thereby enabling the translation mechanism 5 to move from the sixth position to the fifth position.

[0120] In a specific embodiment, as shown in Figures 25, 18 and 3, the surface of the rotating portion 302 of the protrusion 53 close to the cover body 300 is an arc surface, and the surface of the rotating portion 302 of the cover body 300 close to the protrusion 53 is a plane. When the cover body 300 is in the seventh position, i.e., the closed position, the side surface of the rotating portion 302 of the cover body 300 abuts against the arc surface of the protrusion 53 to limit the translation mechanism 5 to the fifth position; in the process of opening the cover body 300, i.e., the process of rotating the cover body 300 from the seventh position to the eighth position, the side surface of the rotating portion 302 of the cover body 300 gradually separates from the arc surface of the protrusion 53. When the cover body 300 is rotated to the eighth position, i.e., the cover is opened, the side surface of the rotating portion 302 is completely separated from the arc surface of the protrusion 53. 53, and the cam 32 is moved horizontally along the second direction A2 so that the translation mechanism 5 is reset from the sixth position to the fifth position. After the cover body 300 is reset to the seventh position, that is, after the cover body 300 is closed, the side surface of the rotation part 302 of the cover body 300 limits the translation mechanism 5 to the fifth position again.

[0121] When the cover 300 is in the seventh position, the cover 300 covers the mouthpiece 202, preventing the user from inhaling from the mouthpiece 202. The cover 300 constrains the translation mechanism 5 to the fifth position, which in turn constrains the rotation mechanism 2 to the first position. The rotation mechanism 2 constrains the dose protection mechanism 3 to the third position. At this point, the mouthpiece 202 is covered, and even if the negative pressure within the airway chamber 11 exceeds a preset threshold, the rotation mechanism 2 remains constrained to the first position and does not rotate. When the cover 300 is in the eighth position, the mouthpiece 202 is exposed, and the cover 300 releases the constraint on the translation mechanism 5, thereby facilitating movement of the translation mechanism 5 from the fifth position to the sixth position.

[0122] In one embodiment, the cover body 300 can be connected to the translation mechanism 5, and can directly drive the translation mechanism 5 to slide between the fifth position and the sixth position by rotating the cover body 300 between the seventh position and the eighth position. That is, when the cover body 300 moves from the seventh position to the eighth position, the translation mechanism 5 is directly driven by the cover body 300 to move from the fifth position to the sixth position.

[0123] In one embodiment, as shown in FIG3 , a spring arm 13 may be provided on the bracket 1 . When the translation mechanism 5 is in the fifth position, the spring arm 13 abuts against the translation mechanism 5 , causing the spring arm 13 to be in a compressed state. When the cover 300 is in the eighth position, i.e., after the cover 300 releases the position restriction on the translation mechanism 5, the spring arm 13 drives the translation mechanism 5 to slide from the fifth position to the sixth position. At this point, the support portion 511 of the translation mechanism 5 no longer abuts against the protruding rod 23 of the rotation mechanism 2 , i.e., the support portion 511 no longer interferes with the movement of the protruding rod 23 of the rotation mechanism 2 . This prevents the support portion 511 of the translation mechanism 5 from obstructing the normal rotation of the rotation mechanism 2 during the respiratory triggering process after the cover 300 is fully opened, thereby preventing the respiratory triggering function from malfunctioning due to the support portion 511 of the translation mechanism 5.

[0124] In one embodiment, the translation mechanism 5 can be driven to slide from the fifth position to the sixth position directly when the rotation mechanism 2 rotates from the first position to the second position. Specifically, after the cover 300 releases the position limit on the translation mechanism 5, the protruding rod 23 connected to the rotation shaft 22 of the rotation mechanism 2 can abut against the support portion 511 of the translation mechanism 5. As the baffle 21 rotates about the rotation shaft 22, the protruding rod 23 pushes the support portion 511 to move, thereby driving the translation mechanism 5 to slide from the fifth position to the sixth position.

[0125] In one embodiment, the dose protection mechanism 3 can also drive the translation mechanism 5 to slide from the fifth position to the sixth position when it moves from the third position to the fourth position. Specifically, after the cover 300 releases the restriction on the translation mechanism 5, the baffle 21 of the rotation mechanism 2 rotates about the rotation axis 22, releasing the restriction on the dose protection mechanism 3. Driven by the elastic member 4, the dose protection mechanism 3 moves from the third position to the fourth position. The push rod 52 of the translation mechanism 5 abuts against the side wall of the receiving groove 331 of the dose protection mechanism 3. The movement of the dose protection mechanism 3 drives the push rod 52 of the translation mechanism 5 to move, thereby causing the translation mechanism 5 to slide from the fifth position to the sixth position.

[0126] In other embodiments, the translation mechanism 5 may be driven to move from the sixth position to the fifth position without rotating the cover body 300 from the eighth position to the seventh position. For example, a separate reset mechanism may be provided, and the reset mechanism is connected to the translation mechanism 5, so as to directly drive the translation mechanism 5 to reset from the sixth position to the fifth position through the reset mechanism; or, the translation mechanism 5 may be limited to the fifth position without using the cover body 300. For example, a separate limiting mechanism may be provided to limit the translation mechanism 5 to the fifth position.

[0127] In one specific embodiment, as shown in Figures 15 and 16 , a groove 222 is formed on the side surface of one end of the rotating shaft 22, and one end of the protruding rod 23 is connected to the side wall of the groove 222. The protruding rod 23 and the baffle 21 form an angle. Specifically, the protruding rod 23 is located on the side of the baffle 21 facing away from the first surface 211. It will be understood that the groove 222 is provided on the side surface of one end of the rotating shaft 22, and one end of the protruding rod 23 is directly connected to the side wall of the groove 222. When the support member 51 of the translation mechanism 5 abuts against the protruding rod 23 to drive the protruding rod 23 to rotate about the rotating shaft 22 and return the rotating mechanism 2 to the first position, the protruding rod 23 is less likely to break under the action of the support member 51, and the rotation efficiency of the protruding rod 23 and the rotating shaft 22 is higher under the action of the support member 51. Furthermore, an angle is formed between the protruding rod 23 and the baffle 21, i.e., the protruding rod 23 is arranged at an angle relative to the baffle 21, and the protruding rod 23 is located on the side of the baffle 21 facing away from the first surface 211. When the translation mechanism 5 slides from the sixth position to the fifth position, the protruding rod 23 is more easily abutted against the support member 51 of the translation mechanism 5, facilitating the support member 51 of the translation mechanism 5 to better apply a force to the protruding rod 23, further facilitating the protruding rod 23 to rotate about the rotation axis 22, thereby driving the baffle 21 of the rotation mechanism 2 to rotate more smoothly about the rotation axis 22, and the translation mechanism 5 drives the rotation mechanism 2 to more efficiently return from the second position to the first position. Preferably, the angle between the protruding rod 23 and the baffle 21 can be set within a range of 15-30 degrees to more effectively improve the resetting efficiency of the rotation mechanism 2.

[0128] In other embodiments, the groove 222 may not be provided on the side surface of one end of the rotating shaft 22, and one end of the protruding rod 23 may be directly connected to the end surface of the rotating shaft 22 close to the end of the translation mechanism 5 or to the outer surface of the rotating shaft 22. The protruding rod 23 of the rotating mechanism 2 is driven to rotate by the translation mechanism 5, thereby driving the rotating mechanism 2 to reset from the second position to the first position.

[0129] Referring to Figures 3 to 14 , specifically, the airway compartment 11 and the medication compartment 12 are spaced apart along a first direction A1. Along a second direction A2, the first airflow channel Q1 and the rotation mechanism 2 are both located on one side of the airway compartment 11. The dose protection mechanism 3 slides along the second direction A2 between a third position and a fourth position. The axis of the rotation shaft 22 of the rotation mechanism 2 is oriented along a third direction A3. Along this third direction A3, the translation mechanism 5 is located on one side of the dose protection mechanism 3. The first direction A1, the second direction A2, and the third direction A3 are all perpendicular to each other.

[0130] In some embodiments, before the breath triggering device 100 is triggered, when the negative pressure within the airway chamber 11 is less than or equal to a preset threshold, that is, before the first airflow channel Q1 is opened, the airway chamber 11 is also connected to the external atmosphere through the third airflow channel Q3, thereby ensuring consistent draw resistance within the airway chamber 11 at each stage. Specifically, as shown in FIG17 , the plate-shaped portion 31 of the dose protection mechanism 3 is further provided with a second communication hole 312, which is spaced apart from the first communication hole 311. In one specific embodiment, the second communication hole 312 is spaced apart from and aligned with the first communication hole 311 in the second direction A2. The second communication hole 312 is part of the third airflow channel Q3. Before the breath triggering device 100 is triggered, when the dose protection mechanism 3 is in the third position, the third airflow channel Q3 is opened, and the second communication hole 312 connects the airway chamber 11 with the external atmosphere, thereby balancing the draw resistance within the airway chamber 11 and preventing inconsistent draw resistance within the airway chamber 11 from affecting the user experience. After the breath triggering device 100 is triggered, when the negative pressure within the airway compartment 11 exceeds a preset threshold, and the dose protection mechanism 3 is in the fourth position, the second communication hole 312 is disconnected from the airway compartment 11, the third airflow channel Q3 is blocked, and the first airflow channel Q1 is opened. The airflow channel connection mode of the dry powder inhaler 800 is changed, and the airway compartment 11 is now connected to the outside atmosphere through the first airflow channel Q1. The airway compartment 11 is connected to the outside atmosphere through different airflow channels at different times. This not only ensures the consistency of the inhalation resistance within the airway compartment 11 at all times, improving user compliance, but also facilitates the deagglomeration of the drug powder.

[0131] Specifically, referring to Figures 4A, 4B, 8A, 8B and 13, a third connecting hole 14 is provided on the bracket 1, and the third connecting hole 14 is spaced apart from the airway bin 11. In a specific embodiment, along the second direction A2, the third connecting hole 14 is spaced apart from the second powder discharge hole 111. The third connecting hole 14 is located on the side of the airway bin 11 close to the rotating mechanism 2, and the third connecting hole 14 is connected to the airway bin 11 through the gap between the airway bin 11 and the rotating mechanism 2. The second connecting hole 312 is provided on the plate-like portion 31 of the dose protection mechanism 3, and one end of the second connecting hole 312 is connected to the external atmosphere. Specifically, one end of the second connecting hole 312 is connected to the external gas entering the shell assembly 200.

[0132] As shown in Figures 4A and 4B, before the breath triggering device 100 is triggered, the rotating mechanism 2 is in the first position and the dose protection mechanism 3 is restricted to the third position. The end of the first airflow channel Q1 is blocked, and the second communication hole 312 on the plate-shaped portion 31 of the dose protection mechanism 3, the third communication hole 14 on the bracket 1, and the gap between the airway compartment 11 and the rotating mechanism 2 are sequentially connected to form a third airflow channel Q3. Before the breath triggering device 100 is triggered, when the dose protection mechanism 3 is in the third position, the second communication hole 312 on the dose protection mechanism 3 is aligned with and connected to the third communication hole 14 on the bracket 1, i.e., the third airflow channel Q3 is opened, thereby connecting the second communication hole 312 to the airway compartment 11 and the external atmosphere. The airway compartment 11 is connected to the external atmosphere through the third airflow channel Q3, thereby balancing the inhalation resistance within the airway compartment 11.

[0133] When the dose protection mechanism 3 moves to the fourth position along the second direction A2, i.e., after the breath trigger mechanism 100 is triggered, the second communication hole 312 is misaligned with the third communication hole 14 on the bracket 1 and cannot communicate with each other, thereby preventing the second communication hole 312 from communicating with the airway chamber 11. The plate-shaped portion 31 of the dose protection mechanism 3 blocks the third communication hole 14 on the bracket 1, thereby blocking the third airflow channel Q3 and preventing the airway chamber 11 from communicating with the outside atmosphere through the third airflow channel Q3. At this time, the rotation mechanism 2 has rotated and opened the port of the first airflow channel Q1, and the airway chamber 11 is now connected to the outside atmosphere through the port of the first airflow channel Q1. At the same time, after the breath trigger mechanism 100 is triggered, the first row of powder holes 121, the first communication hole 311, and the second row of powder holes 111 are aligned and connected in sequence, i.e., the second airflow channel Q2 is opened, facilitating the user to inhale powder from the drug storage portion 62 in the drug delivery chamber 12 into the airway chamber 11 during inhalation, ensuring a sufficiently high airflow velocity for better deagglomeration of the powder. In other embodiments, the third communication hole 14 may not be provided on the bracket 1. When the dose protection mechanism 3 is in the third position, the second communication hole 312 is connected to the airway compartment 11 and the external atmosphere by other means.

[0134] The setting of the breathing trigger device 100 ensures that the breathing trigger device 100 will be triggered to operate only when the flow rate of the user's inhaled air flow is sufficiently greater than the working threshold and the negative pressure in the airway chamber 11 is greater than the preset threshold, thereby connecting the second airflow channel Q2, and the powder in the medicine holding part 62 of the substrate belt 61 in the medicine chamber 12 will enter the airway chamber with the airflow and be better deagglomerated, so as to improve the utilization rate of the powder and improve the emptying rate of the powder in the medicine holding part 62. At the same time, when the flow rate of the user's inhaled airflow is less than or equal to the working threshold and the negative pressure in the airway chamber 11 is less than or equal to the preset threshold, the respiratory trigger device 100 will not be triggered, and the second airflow channel Q2 will be blocked by the plate-shaped portion 31 of the dose protection mechanism 3. The powder in the medicine holding portion 62 in the dosing chamber 12 will be blocked by the plate-shaped portion 31 in the dosing chamber 12, and the medicine powder will not enter the airway chamber 11, avoiding the problem of poor powder deagglomeration effect and low powder utilization rate caused by insufficient user inhalation airflow. At the same time, the plate-shaped portion 31 seals the powder in the medicine holding portion 62, and also avoids problems such as powder contamination and powder leakage when the user does not inhale or the inhalation airflow is insufficient.

[0135] In the present application, before and after the breath triggering mechanism 100 is triggered, not only do the positions and motion states of the rotating mechanism 2 and the dose protection mechanism 3 change, but the communication mode of the airflow channels of the dry powder inhaler 800 also changes. Specifically, when the negative pressure within the airway compartment 11 is less than or equal to a preset threshold, the third airflow channel Q3 is opened and the first airflow channel Q1 is blocked, connecting the third airflow channel Q3 to the airway compartment 11 and the external atmosphere. When the negative pressure within the airway compartment 11 is greater than the preset threshold, the first airflow channel Q1 is opened, the third airflow channel Q3 is blocked, and the first airflow channel Q1 connects the airway compartment 11 to the external atmosphere. The provision of the breath triggering mechanism 100 enables communication between the different airflow channels of the dry powder inhaler 800.

[0136] Referring to Figures 19 to 24, Figure 19 is a structural schematic diagram of an embodiment of the airway structure of the dry powder inhaler provided in the present application, Figure 20 is a cross-sectional schematic diagram of the airway structure provided in Figure 19, Figure 21 is another cross-sectional schematic diagram of the airway structure provided in Figure 19, Figure 22 is a structural schematic diagram of the airway compartment of the airway structure provided in Figure 19, Figure 23 is a top-down structural schematic diagram of the manifold of the airway structure provided in Figure 19, and Figure 24 is a bottom-up structural schematic diagram of the manifold provided in Figure 23.

[0137] 4A , 4B , 6 , 8A , 8B , and 19 to 24 , in one embodiment, the dry powder inhaler 800 further includes an airway structure, which includes the aforementioned airway chamber 11, the first airflow channel Q1, the third airflow channel Q3, the breathing triggering device 100, and an external air inlet 2011 disposed on the housing 201 . The state of the breathing triggering device 100 is determined based on the magnitude of the negative pressure within the airway chamber 11 and a preset threshold value. This allows the dry powder inhaler 800 to have different airflow channel connectivity modes in two different states, before and after the breathing triggering device 100 is triggered. This ensures consistency in inhalation resistance at each stage and facilitates deagglomeration of the drug powder.

[0138] In other embodiments, a trigger mechanism other than the breath trigger device 100 may be provided to connect or switch different airflow channels of the dry powder inhaler 800 through the action of the trigger mechanism. This allows the dry powder inhaler 800 to have different airflow channel connection modes in different states of the trigger mechanism, thereby ensuring consistency of the inhalation resistance of the dry powder inhaler 800 at each stage.

[0139] Referring to Figures 11 to 14 and 19 to 23, the airway structure includes a bracket 1, which has the above-mentioned airway bin 11, wherein the airway bin 11 includes an annular side wall 112, a bottom wall 113 and a top wall 114, the bottom wall 113 of the airway bin 11 has a second row of powder holes 111, and a first fin 115 and a second fin 116 are provided in the airway bin 11, the first fin 115 and the second fin 116 are spaced apart from each other, and the first fin 115 is spaced apart from the annular side wall 112. The side wall 112 cooperates to form a first airway portion 117, the second fin 116 and the annular side wall 112 cooperate to form a second airway portion 118, the first fin 115 and the second fin 116 cooperate to form a mixing airway portion 119, the first airway portion 117 and the second airway portion 118 are both connected to the mixing airway portion 119 and the three together form a vortex airway 110. Specifically, a vortex is formed inside the mixing airway portion 119, and the vortex airway 110 is spiral. The top wall 114 of the airway compartment 11 has an air outlet 15 and an air inlet spaced apart from each other. Specifically, the air inlet includes a first air inlet 16 and a second air inlet 17. The first air inlet 16 and the second air inlet 17 are respectively arranged on both sides of the air outlet 15, wherein the air outlet 15 is directly connected to the mixing air duct portion 119, the first air inlet 16 is connected to the external atmosphere and the first airway portion 117, and the second air inlet 17 is connected to the external atmosphere and the second airway portion 118.

[0140] It can be understood that by setting the airway structure as described above in the dry powder inhaler 800, a first fin 115 and a second fin 116 are set in the airway chamber 11 to form a first airway portion 117, a second airway portion 118 and a mixed airway portion 119, and the first airway portion 117 and the second airway portion 118 are both connected to the mixed airway portion 119 to form a spiral vortex airway 110, and two air inlets, a first air inlet 16 and a second air inlet 17 are set on the top wall 114 of the airway chamber 11. The first air inlet 16 is connected to the first airway portion 117, and the second air inlet 17 is connected to the second airway portion 118. By setting two air inlets, when the user inhales from the nozzle 202 position, the external airflow can enter the vortex airway 110 more efficiently from the top wall 114 of the airway chamber 11, which is more conducive to deagglomerating the medicine powder entering the airway chamber 11. Moreover, the first airway portion 117 and the second airway portion 118 are both connected to the mixing airway portion 119 to form a vortex airway 110. When the user inhales, the gas entering the mixing airway portion 119 from the first airway portion 117 and the gas entering the mixing airway portion 119 from the second airway portion 118 form two tangential airflows. The two tangential airflows converge in the mixing airway portion 119 to form a vortex, which is more conducive to the deagglomeration of the medicine powder in the mixing airway portion 119, and more convenient for the deagglomerated medicine powder to be inhaled by the user through the air outlet 15 and the suction nozzle 202, thereby improving the deagglomeration effect of the medicine powder. The medicine powder in the mixing airway portion 119 has a higher emptying rate under the action of the cyclone, which reduces the adhesion of the medicine powder on the side wall and bottom wall 113 of the mixing airway portion 119, improves the utilization rate of the medicine powder during each inhalation, and reduces the waste of medicine powder.

[0141] Referring to Figure 22, in one embodiment, the first fin 115 and the second fin 116 are both arc-shaped, and the concave surfaces of the first fin 115 and the second fin 116 are arranged opposite each other to form a mixing air passage portion 119. The convex surface of the first fin 115 faces the annular sidewall 112 and is spaced apart from the annular sidewall 112 to form a first air passage portion 117. The convex surface of the second fin 116 faces the annular sidewall 112 and is spaced apart from the annular sidewall 112 to form a second air passage portion 118. The first air inlet 16 is arranged corresponding to the first air passage portion 117, and the second air inlet 17 is arranged corresponding to the second air passage portion 118. Specifically, the first air inlet 16 is arranged corresponding to the end of the first air passage portion 117 away from the mixing air passage portion 119, so that the gas entering the first air passage portion 117 from the first air inlet 16 can flow through the entire first air passage portion 117 before entering the mixing air passage portion 119. The second air inlet 17 is provided at an end of the second airway portion 118 away from the mixing airway portion 119, so that the gas entering the second airway portion 118 from the second air inlet 17 can flow through the entire second airway portion 118 before entering the mixing airway portion 119, thereby increasing the flow rate of the two tangential airflows entering the mixing airway portion 119 from the first airway portion 117 and from the second airway portion 118, further improving the deagglomeration effect of the powder, as well as the emptying rate and utilization rate of the powder. The second row of powder holes 111 is provided at the center of the vortex airway 110. Specifically, the second row of powder holes 111 is provided on the bottom wall 113 of the airway chamber 11, corresponding to the center position of the mixing airway portion 119, so that the gas entering the vortex airway 110 can further deagglomerate the powder entering the mixing airway portion 119 from the second row of powder holes 111 more evenly and efficiently.

[0142] Specifically, the first fin 115 and the second fin 116 extend from the bottom wall 113 of the airway chamber 11 to the top wall 114 of the airway chamber 11. In one embodiment, along the first direction A1, the bottom ends of the first fin 115 and the second fin 116 are connected to the bottom wall 113 of the airway chamber 11, and the top ends are in contact with the top wall 114 of the airway chamber 11. The annular sidewall 112 is a rectangular ring and includes a first sidewall 1121 and a second sidewall 1122, which are oppositely disposed, and a third sidewall 1123 and a fourth sidewall 1124, which are oppositely disposed. Along the extension direction of the arc surface, one end of the first fin 115 is connected to the third side wall 1123, and the other end extends toward the fourth side wall 1124 and is spaced apart from the fourth side wall 1124. The first fin 115 cooperates with the first side wall 1121 and part of the fourth side wall 1124 to form a first airway portion 117. The first airway portion 117 is connected to the mixing airway portion 119 through the gap between the first fin 115 and the fourth side wall 1124. One end of the second fin 116 is connected to the fourth side wall 1124, and the other end extends toward the third side wall 1123 and is spaced apart from the third side wall 1123. The second fin 116 cooperates with the second side wall 1122 and part of the third side wall 1123 to form a second airway portion 118. The second airway portion 118 is connected to the mixing airway portion 119 through the gap between the second fin 116 and the third side wall 1123, so that the second airway portion 118 and the first airway portion 117 enter the mixing airway portion 119 from relative positions, thereby facilitating the formation of a cyclonic airflow.

[0143] As shown in Figures 19 and 22, in a specific embodiment, the first fin 115 and the second fin 116 are centrally symmetrically arranged, and the first air inlet 16 and the second air inlet 17 are centrally symmetrically arranged, which is more conducive to forming a vortex airway 110 and enhancing the deagglomeration effect of the cyclonic airflow on the powder.

[0144] In other embodiments, the first fin 115 and the second fin 116 can also be set to other shapes. For example, the first fin 115 and the second fin 116 can both be set to folded surfaces. The concave surfaces of the first fin 115 and the second fin 116 are arranged relative to each other to form a mixing airway portion 119. The convex surface of the first fin 115 cooperates with the first side wall 1121 and a portion of the fourth side wall 1124 to form a first airway portion 117. The convex surface of the second fin 116 cooperates with the second side wall 1122 and a portion of the third side wall 1123 to form a second airway portion 118. The first airway portion 117 and the second airway portion 118 are both connected to the mixing airway portion 119 to form a vortex airway 110. ; The first fin 115 and the second fin 116 may also be in any shape such as a curved surface; or, the first fin 115 may not be connected to the third side wall 1123, and the second fin 116 may not be connected to the fourth side wall 1124. For example, the first fin 115 is spaced apart from the third side wall 1123 and the fourth side wall 1124, and the second fin 116 is spaced apart from the third side wall 1123 and the fourth side wall 1124. As long as they can cooperate with the annular side wall 112 of the airway compartment 11 to form the first airway portion 117 and the second airway portion 118, and the two cooperate with each other to form the mixing airway portion 119 to form the vortex airway 110, the present application does not impose any limitation on this.

[0145] In a specific embodiment, referring to Figures 19 to 24, the bracket 1 includes a bracket body 18 and a manifold 19, and an air gathering groove (not marked in the figure) is provided on the surface of the bracket body 18 close to the suction nozzle 202. The side wall of the air gathering groove serves as the annular side wall 112 of the airway bin 11, and the bottom wall 113 of the air gathering groove serves as the bottom wall 113 of the airway bin 11. The bottom ends of the first fin 115 and the second fin 116 are connected to the bottom wall 113 of the air gathering groove, and the first airway portion 117, the second airway portion 118 and the mixed airway portion 119 are all formed in the air gathering groove. The manifold 19 is arranged on one side of the bracket body 18 and covers the air gathering groove. The manifold 19 serves as the top wall 114 of the airway chamber 11. The first air inlet 16 and the second air inlet 17 are arranged on the manifold 19. The top ends of the first fin 115 and the second fin 116 are extended to contact the manifold 19 to avoid the airflow entering the air gathering groove from the first air inlet 16 and the second air inlet 17 directly entering the mixing airway portion 119 through the gap between the top ends of the first fin 115 and the second fin 116 and the manifold 19, without flowing through or only partially flowing through the first airway portion 117 and the second airway portion 118, affecting the formation of a cyclonic airflow in the vortex airway 110, resulting in poor deagglomeration effect of the powder in the mixing airway portion 119 and low powder emptying rate.

[0146] Specifically, as shown in Figures 23 and 24, the manifold 19 includes an interconnected embedded portion 191, a cover portion 192, and a connecting portion 193. The embedded portion 191 is located on the side of the cover portion 192 away from the connecting portion 193. The embedded portion 191 is spirally shaped and embedded in the vortex airway 110. The cover portion 192 covers the top of the bracket body 18 and covers the air gathering groove. The first air inlet 16 and the second air inlet 17 are both located in the cover portion 192. The air outlet 15 passes through the connecting portion 193, the cover portion 192, and the embedded portion 191 in sequence and communicates with the mixed air channel portion 119.

[0147] Specifically, the cover portion 192 is a rectangular plate-shaped structure, with the four side surfaces of the cover portion 192 correspondingly abutting against the four side walls of the airway chamber 11. The first air inlet 16 and the second air inlet 17 are notches provided in the cover portion 192. The first air inlet 16 is provided on the surface of the cover portion 192 near the first side wall 1121, and extends from the surface of the cover portion 192 near the third side wall 1123 to the surface near the fourth side wall 1124. Along the third direction A3, the first air inlet 16 and the fourth side wall 1124 are spaced apart. The second air inlet 17 is provided on the surface of the cover portion 192 near the second side wall 1122, and extends from the surface of the cover portion 192 near the fourth side wall 1124 to the surface near the third side wall 1123. Along the third direction A3, the second air inlet 17 and the third side wall 1123 are spaced apart. Preferably, the first air inlet 16 and the second air inlet 17 are centrally symmetrically arranged.

[0148] In other embodiments, the first air inlet 16 and the second air inlet 17 may be any structure such as a round hole, a square hole, etc. provided on the cover portion 192. The shapes of the first air inlet 16 and the second air inlet 17 may be the same or different. The first air inlet 16 and the second air inlet 17 may also be provided at other positions of the cover portion 192. The first air inlet 16 and the second air inlet 17 may not be centrally symmetrically provided, as long as the first air inlet 16 can be connected to the first airway portion 117 and the second air inlet 17 can be connected to the second airway portion 118.

[0149] As shown in Figure 23, the connecting portion 193 of the manifold 19 is in the shape of a circular tube, and the end of the connecting portion 193 away from the embedded portion 191 is inserted into the suction nozzle 202, so that the suction nozzle 202 is connected with the mixing airway portion 119 through the air outlet 15 of the manifold 19, thereby facilitating the user to inhale the powder in the mixing airway portion 119 at the suction nozzle 202.

[0150] As shown in Figure 24, the embedded portion 191 is spiral-shaped. Specifically, the embedded portion 191 includes an annular embedded segment 1911, and a first embedded segment 1912 and a second embedded segment 1913 connected to the annular embedded segment 1911 and spaced apart from each other. Preferably, the first embedded segment 1912 and the second embedded segment 1913 are both spaced apart from part of the outer side surface of the annular embedded segment 1911. The first embedded segment 1912 is arranged at a gap position corresponding to the gap between the first fin 115 and the fourth side wall 1124, and the second embedded segment 1913 is arranged at a gap position corresponding to the gap between the second fin 116 and the third side wall 1123. The annular embedded section 1911 is embedded in the mixing air duct portion 119, the first embedded section 1912 is embedded in the gap between the first fin 115 and the fourth side wall 1124, the second embedded section 1913 is embedded in the gap between the second fin 116 and the third side wall 1123, the end of the first fin 115 close to the fourth side wall 1124 is embedded between the first embedded section 1912 and the annular embedded section 1911, and the end of the second fin 116 close to the third side wall 1123 is embedded between the second embedded section 1913 and the annular embedded section 1911, which facilitates a more stable assembly of the manifold 19 and the bracket body 18, and makes it easier for the vortex air duct 110 to form a cyclone-shaped airflow.

[0151] Preferably, as shown in FIG24 , the surfaces of the first embedded section 1912 and the second embedded section 1913 of the manifold 19 away from the cover portion 192 are inclined surfaces. The thicknesses of the first embedded section 1912 and the second embedded section 1913 in the first direction A1 gradually decrease from the end connected to the annular embedded section 1911 toward the end away from the annular embedded section 1911. It will be appreciated that the inclined surfaces of the first embedded section 1912 and the second embedded section 1913 away from the cover portion 192 provide a certain flow-guiding effect on the airflow entering through the first air inlet 16 and the second air inlet 17. The inclined surfaces further facilitate the formation of a cyclonic airflow within the vortex airway 110, thereby enhancing the deagglomeration effect on the drug powder.

[0152] Specifically, the outer side surface of the first embedded section 1912 is a plane and abuts against the fourth side wall 1124, the inner side surface of the first embedded section 1912 is an arc surface and abuts against part of the outer side surface of the first fin 115, the outer side surface of the second embedded section 1913 is a plane and abuts against the third side wall 1123, and the inner side surface of the second embedded section 1913 is an arc surface and abuts against part of the outer side surface of the second fin 116. More preferably, as shown in Figure 24, in the second direction A2, the first air inlet 16 and the first embedded section 1912 are spaced apart, and / or the second air inlet 17 and the second embedded section 1913 are spaced apart, so as to avoid the airflow entering the first airway portion 117 from the first air inlet 16 directly entering the mixing airway portion 119 through the connection position between the second airway portion 118 and the mixing airway portion 119, or the airflow entering the second airway portion 118 from the first air inlet 16 directly entering the mixing airway portion 119 through the connection position between the second airway portion 118 and the mixing airway portion 119, thereby affecting the formation of the cyclonic airflow and thereby affecting the deagglomeration effect on the medicinal powder.

[0153] In other embodiments, the manifold 19 may be integrally formed with the bracket body 18, or the manifold 19 may not be provided. The bracket body 18 itself forms the top wall 114 of the airway compartment 11. The top ends of the first fins 115 and the second fins 116 may be directly connected to the top wall 114 of the airway compartment 11. The air outlet holes 15 are provided on the top wall 114 of the airway compartment 11 to connect the suction nozzle 202 and the mixing airway portion 119. The first fins 115 and the second fins 116 may be integrally formed with the bracket 1.

[0154] The dosing bin 12 is used to accommodate the medicine strip 6. Specifically, the medicine strip 6 includes a base strip 61 and a cover strip (not shown in the figure). The base strip 61 is provided with a medicine holding portion 62 for holding powdered medicine. The cover strip is attached to a surface of the base strip 61 and covers the medicine holding portion 62. During use, the cover strip is peeled off from the base strip 61. The dosing bin 12 is used to accommodate the base strip 61 after the cover strip is peeled off, so that the medicine holding portion 62 is exposed, thereby making it convenient for the user to inhale the medicine powder in the medicine holding portion 62.

[0155] In some embodiments, the airway structure also includes an air intake channel Q4 independent of the vortex airway 110, and the air intake channel Q4 connects the external atmosphere and the second row of powder holes 111 of the bottom wall 113 of the airway bin 11, and passes through the first row of powder holes 121 of the top wall 114 of the drug delivery bin 12, wherein, when the user inhales, the drug holding portion 62 of the drug strip 6 is delivered to the position corresponding to the first row of powder holes 121 of the drug delivery bin 12, that is, the first row of powder holes 121 is connected to the drug holding portion 62. It can be understood that an air intake channel Q4 independent of the vortex airway 110 is provided in the airway structure. The air intake channel Q4 is connected to the external atmosphere and must pass through the first row of powder holes 121 on the top wall 114 of the drug storage bin 12 and then be connected to the second row of powder holes 111. During the user's inhalation process, the air intake channel Q4 can introduce external airflow into the position of the first row of powder holes 121. The airflow can carry the powder in the medicine holding portion 62 arranged opposite to the first row of powder holes 121 into the second row of powder holes 111, and then be inhaled by the user through the vortex airway 110 and the suction nozzle 202. That is, when the airflow passes through the first row of powder holes 121, it must flow through the top of the medicine holding portion 62. The medicine powder in the medicine holding portion 62 is more easily carried by the airflow into the vortex airway 110, which makes it easier for the medicine powder to be discharged from the medicine holding portion 62, effectively solving the problem of unclean discharge of the medicine powder and improving the utilization rate of the medicine powder.

[0156] In one embodiment, the top wall 114 of the medication chamber 12 further includes an air vent 122 spaced apart from the first row of powder holes 121. The air vent 122 is offset from the second row of powder holes 111. The air inlet channel Q4 includes the air vent 122, the medicine holding portion 62 within the medication chamber 12, and the first row of powder holes 121, which are sequentially connected. One end of the air inlet channel Q4 is connected to the external atmosphere, and the other end is connected to the second row of powder holes 111. During the user's inhalation process, the air inlet channel Q4 flows sequentially through the air vent 122, the medicine holding portion 62 within the medication chamber 12, and the first row of powder holes 121 before reaching the second row of powder holes 111. It can be understood that the air entering the air inlet channel Q4 will first flow through the air vent 122 before flowing through the first row of powder holes 121. Because the air vent 122 is spaced apart from the first row of powder holes 121, the air will pass through the interior of the medication chamber 12 when flowing from the air vent 122 to the second row of powder holes 111. Specifically, during the user's inhalation process, the medicine holding portion 62 of the medicine belt 6 is delivered to the position corresponding to the vent hole 122 and the first row of powder holes 121, and the gas will flow through the top of the medicine holding portion 62 inside the medicine storage bin 12, and then flow through the first row of powder holes 121. The airflow flowing through the top of the medicine holding portion 62 will carry the medicine powder in the medicine holding portion 62 into the first row of powder holes 121, and then flow through the vortex airway 110 and be inhaled by the user at the suction nozzle 202. Compared with only sucking the medicine powder in the medicine holding portion 62 into the vortex airway 110 through the second airflow channel Q2, a separate air inlet channel Q4 is provided, so that the airflow can flow through the inside of the medicine holding portion 62, which is more conducive to improving the emptying rate and utilization rate of the medicine powder, and avoiding the problem of waste caused by unclean discharge of medicine powder.

[0157] Specifically, as shown in Figures 14 and 21, a third air inlet 10 is provided on the bracket 1, and the third air inlet 10 is arranged at a position corresponding to the top wall 114 of the drug administration chamber 12 and the bottom wall 113 of the airway chamber 11. The third air inlet 10 is connected to the external atmosphere and the air vent 122. The air vent 122 and the first row of powder holes 121 are both used to connect to the medicine containing portion 62 of the medicine belt 6 when the user inhales, so that the third air inlet 10, the air vent 122, the medicine containing portion 62, and the first row of powder holes 121 are connected in sequence to form the air inlet channel Q4, that is, the third air inlet 10 is the port of the air inlet channel Q4, and the external air enters the air inlet channel Q4 through the third air inlet 10.

[0158] In a specific embodiment, during the user's inhalation process, the medicine holding portion 62 is delivered to a position corresponding to the vent hole 122 and the first row of powder holes 121. Preferably, in the third direction A3, the first row of powder holes 121 and the vent hole 122 are spaced apart and aligned. Specifically, as shown in Figures 20 and 21, the first row of powder holes 121 and the vent hole 122 are both circular holes, the diameter of the first row of powder holes 121 is equal to the diameter of the vent hole 122, and the first row of powder holes 121 and the vent hole 122 are completely aligned in the third direction A3. In the second direction A2, the width of the medicine accommodating portion 62 is equal to the diameter of the first row of powder holes 121 and the vent holes 122, and the length of the medicine accommodating portion 62 in the third direction A3 is greater than the width in the second direction A2. Preferably, in the third direction A3, the length of the medicine accommodating portion 62 just completely covers the first row of powder holes 121 and the vent holes 122, that is, in the third direction A3, one end of the medicine accommodating portion 62 corresponds to the hole wall of the first row of powder holes 121 away from one end of the vent holes 122, and the other end corresponds to the vent holes 122 away from the first row of powder holes 121. 21, the hole wall at one end of the medicine containing portion 62 is completely aligned with the first row of powder holes 121 and the vent holes 122. When the gas flows through the vent holes 122 and the first row of powder holes 121, it can completely flow through the entire medicine containing portion 62, so as to carry the medicine powder in the medicine containing portion 62 into the vortex airway 110 more smoothly and efficiently, and ensure that the medicine powder at each position in the medicine containing portion 62 can be discharged from the medicine containing portion 62, so as to more effectively improve the emptying rate of the medicine powder, thereby improving the utilization rate of the medicine powder, solving the problem of unclean discharge of the medicine powder, and avoiding waste.

[0159] In other embodiments, the first row of powder holes 121 and the vent holes 122 may also be set to any regular or irregular shape such as rectangular holes, elliptical holes, diamond holes, triangular holes, etc. The shapes of the first row of powder holes 121 and the vent holes 122 may be the same or different; the first row of powder holes 121 and the vent holes 122 may not be completely aligned, for example, the diameters of the first row of powder holes 121 and the vent holes 122 are equal, and in the third direction A3, only a part of the first row of powder holes 121 and the vent holes 122 are aligned, and the other part is staggered, or the diameters of the first row of powder holes 121 and the vent holes 122 are not equal, so that the first row of powder holes 121 and the vent holes 122 are partially aligned; in the second direction A2, the width of the medicament accommodating portion 62 may also be greater than or less than the first row of powder holes 121 Or the diameter of the air hole 122, in the third direction A3, the length of the medicine holding portion 62 may also be smaller than or larger than the size from one end of the first row of powder holes 121 away from the air hole 122 to the end of the air hole 122 away from the first row of powder holes 121, that is, the medicine holding portion 62 and the first row of powder holes 121 and the air hole 122 may also not be completely aligned, that is, they may be partially staggered; the first row of powder holes 121 and the air hole 122 may also be spaced apart along other directions, and the first row of powder holes 121 and the air hole 122 may also be staggered, as long as the first row of powder holes 121 and the air hole 122 can be connected to the medicine holding portion 62, the air flow can flow through the top of the medicine holding portion 62 when flowing from the air hole 122 to the first row of powder holes 121, and this application does not limit this. The third air inlet 10 may also not be set corresponding to the gap position between the top wall 114 of the medication chamber 12 and the bottom wall 113 of the airway chamber 11, and may be set at any position of the bracket 1, as long as the third air inlet 10 can connect to the external atmosphere and the vent 122.

[0160] Furthermore, in some embodiments, since the dose protection mechanism 3 is partially movably arranged in the gap between the drug administration chamber 12 and the airway chamber 11, and can move between the third position and the fourth position along the second direction A2, a first connecting hole 311 is provided on the dose protection mechanism 3. When the dose protection mechanism 3 is in the third position, the first connecting hole 311 and the first row of powder holes 121 are staggered, and the dose protection mechanism 3 blocks the first row of powder holes 121. At this time, the air inlet channel Q4 is not connected to the second row of powder holes 111, which can avoid waste of powder from entering the vortex airway 110 from the first row of powder holes 121 when the user does not inhale or the inhalation airflow is insufficient. When the dose protection mechanism 3 is in the fourth position, the first connecting hole 311 is located between the first row of powder holes 121 and the second row of powder holes 111, and the first row of powder holes 121, the first connecting hole 311 and the second row of powder holes 111 are aligned and connected in sequence to form a second air flow channel Q2. At this time, the dose protection mechanism 3 does not block the air inlet channel Q4, and the third air inlet 10 is connected with the air vent 122, so that external air can pass through the third air inlet 10, the air vent 122, the inside of the medicine holding portion 62, the first row of powder holes 121, the first connecting hole 311 and then enter the second row of powder holes 111, so that the air inlet channel Q4 is connected with the second row of powder holes 111, and the first row of powder holes 121 and the first connecting hole 311 are both part of the second air flow channel Q2 and part of the air inlet channel Q4. The rotation of the rotating mechanism 2 between the first position and the second position is determined by the relationship between the user's suction negative pressure value and the preset threshold value, thereby controlling the movement of the dose protection mechanism 3 between the third position and the fourth position in the second direction A2, thereby achieving the blocking and connection of the second air flow channel Q2 and the air inlet channel Q4, which is beneficial to improving the powder deagglomeration effect while improving the powder emptying rate.

[0161] Furthermore, in some embodiments, the dose protection mechanism 3 also has a notch 34. When the dose protection mechanism 3 is in the third position, the notch 34 is offset from the vent hole 122 and / or the third air inlet 10. The dose protection mechanism 3 blocks the vent hole 122 and / or the third air inlet 10 to prevent the air inlet channel Q4 from being connected to the second row of powder holes 111.

[0162] As shown in Figures 5, 9A, 9B, and 17, in one embodiment, a notch 34 is provided in the plate-shaped portion 31 of the dose protection mechanism 3, and the notch 34 is spaced and aligned with the first communication hole 311 in the third direction A3. Specifically, the notch 34 is a rectangular notch, and the first communication hole 311 is a circular hole. In the second direction A2, the size of the notch 34 is equal to the diameter of the first communication hole 311, and the first communication hole 311 and the notch 34 are completely aligned in the third direction A3. In the third direction A3, the length of the notch 34 is greater than the diameter of the vent hole 122, and in the second direction A2, the width of the notch 34 is equal to the diameter of the vent hole 122.

[0163] When the user's inhalation airflow is insufficient, the negative pressure in the airway chamber 11 is less than or equal to the preset threshold, the rotating mechanism 2 is in the first position, and the dose protection mechanism 3 is in the third position, the first connecting hole 311 is completely misaligned with the first row of powder holes 121 and the second row of powder holes 111, the plate-like portion 31 blocks the first row of powder holes 121, and the second air flow channel Q2 is disconnected. At the same time, the missing hole 34 is also completely misaligned with the vent hole 122 and the third air inlet 10, and the missing hole 34 is not connected to the vent hole 122 and the third air inlet 10, so that the air inlet channel Q4 is disconnected. At this time, the powder in the medicine holding portion 62 will not enter the vortex airway 110 through the second row of powder holes 111, thereby avoiding waste of medicine powder.

[0164] When the user inhales with sufficient airflow, the negative pressure within the airway chamber 11 exceeds a preset threshold, and the dose protection mechanism 3 is in the fourth position, the notch 34 moves to a position corresponding to the vent 122 and communicates with the vent 122. Specifically, in the first direction A1, the notch 34 is aligned with the vent 122, with the projection of the vent 122 completely within the projection of the notch 34. The notch 34 and the vent 122 are aligned and communicate with each other. In the third direction A3, the third air inlet 10 is aligned and communicates with the notch 34, wherein the third air inlet 10 is located on the side of the notch 34 away from the first communication hole 311. Preferably, along the second direction A2, the width of the third air inlet 10 is equal to the width of the hole 34, and along the first direction A1, the height of the third air inlet 10 is equal to the height of the hole 34, that is, the thickness of the plate-like portion 31, so that the gas entering the air inlet channel Q4 through the third air inlet 10 can completely flow through the hole 34 and the air vent 122 and enter the top of the medicine holding portion 62 to carry the medicine powder into the second row of powder holes 111, thereby improving the powder emptying rate and air intake efficiency, which is beneficial to improving the deagglomeration effect of the medicine powder.

[0165] In other embodiments, the notch 34 may also be set to any other shape such as a circle, a semicircle, a diamond, etc. In the second direction A2, the size of the notch 34 may not be equal to the aperture of the first connecting hole 311, and the first connecting hole 311 and the notch 34 may be only partially aligned in the third direction A3; or, the notch 34 and the first connecting hole 311 may also be spaced apart in other directions; in the second direction A2, the width of the notch 34 may not be equal to the aperture of the vent 122, and the width of the third air inlet 10 may not be equal to the aperture of the vent 122. When the dose protection mechanism 3 is in the third position, the first connecting hole 311 is aligned and connected with the second row of powder holes 111 and the first row of powder holes 121, and the missing hole 34 can be only offset with the third air inlet 10, and partially aligned or completely aligned with the vent hole 122, that is, the missing hole 34 is connected with the vent hole 122 and only disconnected from the third air inlet 10, so that when the dose protection mechanism 3 is in the third position, the air inlet channel Q4 is disconnected, and the external air flow cannot flow through the third air inlet 10, then flow through the air inlet channel Q4 and then enter the second row of powder holes 111; alternatively, when the dose protection mechanism 3 is in the third position, the missing hole 34 can only be offset with the vent hole 122, and partially aligned or completely aligned with the third air inlet 10, so that the air inlet channel Q4 is disconnected. When the dose protection mechanism 3 is in the fourth position, the notch 34 may be partially aligned with the third air inlet 10 and / or the vent hole 122 , so that the air inlet channel Q4 is connected to the second row of powder holes 111 .

[0166] In other embodiments, in the dose protection mechanism 3 of the airway structure, only the first connecting hole 311 may be provided without the missing hole 34, or only the missing hole 34 may be provided without the first connecting hole 311. The communication and blocking between the air inlet channel Q4 and the second powder discharge hole 111 are controlled by moving the dose protection mechanism 3 between the third position and the fourth position, thereby improving the powder emptying rate while reducing powder waste.

[0167] In some embodiments, with further reference to Figures 2 and 4A and 4B, the dry powder inhaler 800 further includes an unwinding wheel 400, a cover sheet winding wheel 500, a dosing wheel 600, and a substrate winding wheel 700. The unwinding wheel 400, the cover sheet winding wheel 500, the dosing wheel 600, and the substrate winding wheel 700 are all mounted on the bracket 1.

[0168] The unwinding wheel 400 is used to unwind the medicine tape 6 and includes a medicine tape mounting shaft 401 for mounting the medicine tape 6. Along the length of the medicine tape 6, at one end of the medicine tape 6, the base tape 61 and the cover tape are in a peeled state. The cover tape winding wheel 500 is used to peel the cover tape off the base tape 61 to expose the medicine receiving portion 62 on the base tape 61, and to rewind the cover tape after it has been peeled off the base tape 61. The dosing wheel 600 is disposed within the dosing chamber 12 and is used to transfer the base tape 61 after it has been peeled off by the cover tape winding wheel 500, so as to deliver the medicine receiving portion 62 to a position corresponding to the first row of powder holes 121, so that the powder in the medicine receiving portion 62 can be discharged through the first row of powder holes 121 when the user inhales. The base film winding wheel 700 is used to wind up the base film strip 61 after the cover film strip is peeled off by the cover film winding wheel 500 and the medicine powder in the medicine containing portion 62 is inhaled by the user.

[0169] The bracket 1 is also provided with a tape accommodating slot 7, within which at least the unwinding wheel 400 is located. The tape accommodating slot 7 is used to accommodate at least the wound tape 6 mounted on the tape mounting shaft 401. As shown in Figures 2, 12, and 13, in one embodiment, the unwinding wheel 400 and the substrate winding wheel 700 are both located within the tape accommodating slot 7, spaced apart from each other and not interfering with each other. In other embodiments, if the tape accommodating slot 7 is sufficiently spacious, the unwinding wheel 400, the substrate winding wheel 700, and the cover film winding wheel 500 can all be located within the tape accommodating slot 7, and the design can be customized as needed.

[0170] The medicine strip 6 comprises a base strip 61 and a cover strip (not shown). The base strip 61 is provided with a medicine holding portion 62 (i.e., a medicine capsule) for holding powdered medicine. The cover strip is attached to one surface of the base strip 61 and covers the medicine holding portion 62. During use, the cover strip is peeled off the base strip 61. A dosing wheel 600 is housed within the dosing chamber 12. The outer side of the dosing wheel 600 has a plurality of dosing slots (not shown). The base strip 61, after being peeled off the cover strip, is wound around the dosing wheel 600 so that the medicine holding portion 62 is located within the dosing slots and the top of the medicine holding portion 62 is exposed, allowing the medicine holding portion 62 to serve as part of the air inlet passage Q4, thereby facilitating the user to inhale the powdered medicine in the medicine holding portion 62.

[0171] The unwinding wheel 400, the cover sheet winding wheel 500, the medication administration wheel 600, and the substrate winding wheel 700 can all be provided with gears, and transmission can be achieved by forming a gear set with multiple gears, thereby achieving their respective functions. In one embodiment, the rotation center of the cover body 300 can be linked with the gear set, and the rotation of the cover body 300 between the seventh position and the eighth position drives the gear set to move, thereby enabling the unwinding wheel 400, the cover sheet winding wheel 500, the medication administration wheel 600, and the substrate winding wheel 700 to achieve their functions; at the same time, the limit of the translation mechanism 5 of the breathing trigger device 100 can also be released, facilitating the subsequent breathing triggering process. That is, during the process of the cover body 300 rotating from the seventh position to the eighth position (i.e., the opening process), the linkage between multiple submodules is achieved. Through a single opening operation, the linkage action of the relevant modules can be achieved, simplifying the user's operation and improving user compliance.

[0172] Concrete, Diskus 800 can comprise ratchet (not shown) and ratchet gear (not shown), ratchet and ratchet gear are all provided with a plurality of pawls and are assembled and connected, ratchet gear is connected with above-mentioned gear train gear, and the rotation center of cover 300 is connected with the center of ratchet.When cover 300 rotates from the seventh position to the eighth position, because ratchet and ratchet gear are connected by the pawl, cover 300 drives ratchet and ratchet gear to rotate synchronously, and then drives gear train to rotate by ratchet gear, so that above-mentioned multiple submodules realize its function.In the rotation process of cover 300 from the eighth position to the seventh position, because the pawl provided on ratchet and ratchet gear, cover 300 only can drive the ratchet that is connected thereto to rotate in the opposite direction, ratchet gear can not rotate, and the gear train of unwinding wheel 400, cover sheet winding wheel 500, medication wheel 600 and substrate winding wheel 700 can not rotate either, avoids medicine tape, substrate tape or cover sheet tape to unwind or to wind loosely.

[0173] In other embodiments, a separate drive member may be provided to drive the gear train to operate, thereby enabling each component to function. The gears in the unwinding wheel 400, the cover sheet winding wheel 500, the dosing wheel 600, and the substrate winding wheel 700 may rotate synchronously or asynchronously, as desired.

[0174] Referring to Figures 26 to 31, Figure 26 is a structural schematic diagram of an embodiment of the winding device provided in the present application, Figure 27 is a cross-sectional schematic diagram of the winding device provided in Figure 26, Figure 28 is a structural schematic diagram of the tape rod of the winding device provided in Figure 26, Figure 29 is a top-view structural schematic diagram of the tape gear of the winding device provided in Figure 26, Figure 30 is a bottom-up structural schematic diagram of the tape gear provided in Figure 29, and Figure 31 is a structural schematic diagram of the corrugated washer of the winding device provided in Figure 25.

[0175] 26 and 27 , the present application further provides a winding device 900. At least one of the cover film winding wheel 500 and the substrate film winding wheel 700 of the dry powder inhaler 800 may be the winding device 900 described above. The winding device 900 includes a tape rod 91, a tape gear 92, and a washer 93. The tape rod 91 includes a rod-shaped portion 911, a first clamping portion 912, and a second clamping portion 913. The first clamping portion 912 and the second clamping portion 913 are spaced apart on the outer side of the rod-shaped portion 911. The rod-shaped portion 911 is used to wind up the material tape, wherein the material tape may be the substrate film tape 61 or the cover film tape. The tape gear 92 has a center hole 921. The tape gear 92 is sleeved on the outer side of the rod-shaped portion 911 and is located between the first engaging portion 912 and the second engaging portion 913. That is, the first engaging portion 912 and the second engaging portion 913 limit the position of the tape gear 92. The wall of the center hole 921 is in contact with the outer side of the rod-shaped portion 911, and the surface of the tape gear 92 adjacent to the first engaging portion 912 is in contact with the first engaging portion 912. The washer 93 is installed between the tape gear 92 and the second engaging portion 913, and is in contact with the tape gear 92 and the second engaging portion 913, respectively.

[0176] It can be understood that the tape gear 92 is limitedly installed on the tape rod 91 by the first clamping portion 912 and the second clamping portion 913. The structures of the tape gear 92 and the tape rod 91 are relatively simple and the volume is small. The diameter of the tape rod 91 is smaller than the diameter of the tape gear 92, so more material tape can be wound, which effectively saves space and simplifies the structure of the winding device 900. It can be suitable for small space structures and has a wider range of applications. The first locking portion 912 is located near the first locking portion 912, and the first locking portion 912 is located near the first locking portion 912. The contact area between the belt gear 92 and the belt rod 91 is larger, and the friction force is greater, which is more conducive to the belt gear 92 driving the belt rod 91 to rotate and rewind the material belt. When the belt rod 91 is overloaded, the belt gear 92 can also slide relative to the belt rod 91. The belt gear 92 is still rotating and the belt rod 91 can stop rotating, or it can rotate at a speed lower than the speed of the belt gear 92, so that the belt gear 92 can slide relative to the belt rod 91, thereby effectively reducing the load of the belt rod 91 through the sliding friction between the two, achieving the effect of belt compensation, and avoiding the belt rod 91 from still winding the belt when the load is too large, resulting in the belt rod 91 winding the material too tightly and breaking the material belt. After the tape winding compensation is performed on the tape winding rod 91 , the tape winding rod 91 can still rotate synchronously with the tape winding gear 92 under the drive of the tape winding gear 92 to continue winding the material tape.

[0177] As shown in Figures 26 and 27, in one embodiment, the washer 93 includes a rigid washer 931 and an elastic washer 932. The elastic washer 932 is positioned between the tape gear 92 and the rigid washer 931, and is disposed in contact with both the tape gear 92 and the rigid washer 931. In one specific embodiment, the rigid washer 931 is a flat washer, and the elastic washer 932 is a corrugated washer. It will be appreciated that the simultaneous provision of the rigid washer 931 and the elastic washer 932 allows the elastic washer 932 to compress the tape gear 92 during assembly, ensuring closer contact between the tape gear 92 and the tape rod 91. This facilitates the synchronous rotation of the tape rod 91 with the rotation of the tape gear 92, thereby winding the tape. The provision of the rigid washer 931 also enhances the assembly stability of the winding device 900. The contact between the elastic washer 932 and the rigid washer 931 also reduces energy loss in the entire winding device 900 during the movement of the tape gear 92.

[0178] Specifically, a wave crest is provided on the side of the corrugated washer facing the tape gear 92. As shown in FIG29 , a limiting groove 922 is provided on the surface of the tape gear 92 close to the corrugated washer corresponding to the wave crest. The wave crest is correspondingly provided in the limiting groove 922 so that the tape gear 92 and the corrugated washer rotate synchronously, thereby avoiding relative sliding between the tape gear 92 and the corrugated washer, and the sliding friction between the two causes the problem of energy loss of the winding device 900.

[0179] 26, 27, and 30, a receiving groove 923 is provided on the surface of the tape winding gear 92 on the side away from the washer 93, a center hole 921 is provided on the bottom wall 113 of the receiving groove 923, and the first engaging portion 912 is embedded in the receiving groove 923. Specifically, the surface of the first engaging portion 912 proximal to the second engaging portion 913 is aligned with the bottom surface of the receiving groove 923, and / or the side surfaces of the first engaging portion 912 are aligned with the side surfaces of the receiving groove 923. Preferably, the surface of the first engaging portion 912 proximal to the second engaging portion 913 is aligned with the bottom surface of the receiving groove 923, and the side surfaces of the first engaging portion 912 are aligned with the side surfaces of the receiving groove 923. It can be understood that the above embodiment can make the contact area between the tape gear 92 and the tape rod 91 larger, the static friction stronger, and more conducive to the tape gear 92 driving the tape rod 91 to rotate synchronously; it can also reduce the load of the tape rod 91 more quickly through the staggered movement of the tape rod 91 and the tape gear 92 when the load on the tape rod 91 is too large, and achieve the effect of tape compensation more efficiently, thereby avoiding the problem of damage to the material tape caused by excessive tape tension.

[0180] Referring to Figures 26, 27 and 28, the rod-shaped portion 911 of the winding rod 91 includes a first rod segment 914 and a second rod segment 915 connected to each other, the first clamping portion 912 is located at the connection between the first rod segment 914 and the second rod segment 915, and the second clamping portion 913 is arranged at one end of the second rod segment 915 away from the first clamping portion 912. The first rod segment 914 is used to wind up the material tape, and the winding gear 92 and the washer 93 are sleeved on the second rod segment 915.

[0181] In a specific embodiment, the rod-shaped portion 911 is cylindrical, the first clamping portion 912 is annular, the center hole 921 is a circular hole, the receiving groove 923 is a circular groove, and the surface of the second clamping portion 913 away from the first clamping portion 912 is a slope, which is inclined to the axis of the rod-shaped portion 911, and the diameter of the second clamping portion 913 gradually increases from the end of the second clamping portion 913 away from the first clamping portion 912 to the end close to the first clamping portion 912, and the diameter of the second clamping portion 913 close to the end of the first clamping portion 912 is smaller than the diameter of the first clamping portion 912. It can be understood that making the surface of the second clamping portion 913 away from the first clamping portion 912 an inclined surface can make it easier to assemble the washer 93 and the tape gear 92 on the tape rod 91, thereby improving assembly efficiency. In addition, the diameter of the second clamping portion 913 close to the end of the first clamping portion 912 is smaller than the diameter of the first clamping portion 912, which can prevent the center hole 921 of the tape gear 92 from passing through the first clamping portion 912 and being unable to be confined between the first clamping portion 912 and the second clamping portion 913.

[0182] The first rod segment 914 is hollow cylindrical, and the sidewall of the first rod segment 914 is provided with at least one first latching groove 916, which extends axially along the rod portion 911. As shown in FIG28 , in one embodiment, the sidewall of the first rod segment 914 is provided with two first latching grooves 916, which are used to allow the end of the material strip to pass through them, so as to facilitate the first rod segment 914 to reel the material strip. And / or, the second rod segment 915 is hollow cylindrical, and the sidewall of the second rod segment 915 is provided with at least one second latching groove 917. As shown in FIG28 , in one embodiment, the sidewall of the second rod segment 915 is provided with two second latching grooves 917, which extend from the end of the second rod segment 915 away from the first rod segment 914 to the first latching portion 912. During the assembly process of the winding device 900, the second clamping groove 917 can facilitate the inward contraction of the second rod segment 915, so that the belt gear 92 and the washer 93 can be more smoothly assembled from one end of the second clamping portion 913 to between the second clamping portion 913 and the first clamping portion 912, thereby improving the assembly efficiency, and returning to its original state after the assembly is completed, so as to facilitate the limiting of the belt gear 92 and the washer 93.

[0183] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A rotation mechanism, applied to a breath trigger device, wherein, Comprising: A rotating shaft having a notch on its outer surface; A baffle connected to the outer surface of the rotating shaft; Wherein, the rotating mechanism can rotate between a first position and a second position, and when in the first position, it blocks a first air flow channel of the breath trigger device; when moving from the first position to the second position, the baffle rotates around the rotating shaft to open the first air flow channel.

2. The rotating mechanism according to claim 1, wherein, One end of the rotating shaft is connected with a convex rod; One side surface of one end of the rotating shaft has a groove, one end of the convex rod is connected to the side wall of the groove, and the convex rod has an included angle with the baffle.

3. The rotating mechanism according to claim 1, wherein, The baffle has a first surface, and a flange is arranged on the first surface, the flange is arranged at one end of the baffle away from the rotating shaft, and extends from one side to the other side along the edge of the end of the baffle away from the rotating shaft.

4. The rotating mechanism according to claim 3, wherein, A chamfer is arranged at one end of the flange away from the rotating shaft.

5. The rotating mechanism according to claim 3, wherein, The baffle further has a second surface opposite to the first surface, and a stopper is arranged on the second surface; the stopper is arranged at one end of the baffle away from the rotating shaft, and extends from one side to the other side along the edge of the end of the baffle away from the rotating shaft; Along the direction parallel to the second surface, one end of the stopper is connected to the second surface, and the other end extends out of the second surface to form a limiting part.

6. A dose protection mechanism applied to a breath trigger device, wherein, The dose protection mechanism can move between a third position and a fourth position; the dose protection mechanism includes a plate-shaped part, and the plate-shaped part has a first communication hole and a second communication hole which are spaced apart from each other; When the dose protection mechanism is in the third position, the plate-shaped part blocks a second air flow channel of the breath trigger device, and the second communication hole communicates the external atmosphere and the airway chamber of the breath trigger device; when the dose protection mechanism is in the fourth position, the first communication hole communicates with the second air flow channel, and the plate-shaped part is used to block the airway chamber.

7. The dose protection mechanism according to claim 6, wherein, The dose protection mechanism further includes a main body part, and a limiting member is arranged on the main body part.

8. The dose protection mechanism according to claim 7, wherein, The limiting member is a convex column obliquely arranged on one surface of the main body part, and the convex column has a free end.

9. The dose protection mechanism according to claim 7, wherein, Both the first communication hole and the second communication hole are circular holes, and are arranged at intervals and in alignment in the moving direction of the dose protection mechanism; A receiving groove is further arranged on the main body part.

10. A breathing trigger device, wherein, Comprising: An airway chamber; A rotating mechanism capable of rotating between a first position and a second position; A dose protection mechanism capable of moving between a third position and a fourth position; Wherein, when the negative pressure in the airway chamber of the breath trigger device is greater than a preset threshold value, the external air pressure pushes the rotating mechanism to rotate from the first position to the second position, the rotating mechanism releases the limit on the dose protection mechanism, and the dose protection mechanism moves from the third position to the fourth position; And / or, When the negative pressure in the airway chamber of the breath trigger device is greater than a preset threshold value, the rotating mechanism and the dose protection mechanism move so that the communication mode of the air flow channel of the breath trigger device changes.

11. According to claim 1 of the breath trigger device, wherein, The rotating mechanism is the rotating mechanism according to any one of claims 1-5; The dose protection mechanism is the dose protection mechanism according to any one of claims 6-9; The breathing trigger device further includes a drug delivery chamber spaced from the airway chamber; the airway chamber and the drug delivery chamber are communicated through a second air flow channel; the airway chamber is communicated with the external atmosphere through a first air flow channel or a third air flow channel; Wherein, when the negative pressure in the airway chamber is greater than a preset threshold value, the external air pressure pushes the rotating mechanism to rotate from the first position to the second position, so that the first air flow channel is opened; when the dose protection mechanism is in the third position, the second air flow channel is blocked, the airway chamber and the drug delivery chamber are not communicated, and the third air flow channel is opened, and the airway chamber is communicated with the external atmosphere through the third air flow channel; when the dose protection mechanism is in the fourth position, the second air flow channel is opened to communicate the airway chamber and the drug delivery chamber, and the third air flow channel is blocked.

12. The respiratory triggering device according to claim 11, wherein, The breathing trigger device further includes: A bracket having the airway chamber and the drug delivery chamber spaced apart; the rotating mechanism is rotatably arranged on the bracket, and the dose protection mechanism is movably arranged on the bracket; An elastic member in contact with the dose protection mechanism for driving the dose protection mechanism to move from the third position to the fourth position; Wherein, when the rotating mechanism rotates from the first position to the second position, the rotating mechanism releases the limit on the dose protection mechanism, so that the elastic member drives the dose protection mechanism to move from the third position to the fourth position.

13. The breathing trigger device according to claim 12, wherein, The drug delivery chamber has a first powder discharging hole, and the airway chamber has a second powder discharging hole; the first powder discharging hole and the second powder discharging hole are arranged at intervals in alignment to form a part of the second air flow channel; the bracket is further provided with a third communication hole spaced from the airway chamber; Wherein, when the dose protection mechanism is in the third position, the first communication hole is misaligned with the first powder discharging hole and blocks the first powder discharging hole; when the dose protection mechanism is in the third position, the second communication hole is in alignment and communication with the third communication hole to form a part of the third air flow channel; when the dose protection mechanism is in the fourth position, the first communication hole is located between the first powder discharging hole and the second powder discharging hole, so that the first powder discharging hole, the first communication hole and the second powder discharging hole are sequentially in alignment and communication to form the second air flow channel.

14. The respiratory trigger device according to claim 12, wherein, The breathing trigger device further includes a translation mechanism; the translation mechanism is movably arranged on the bracket and can move between a fifth position and a sixth position; the translation mechanism is respectively in contact with the rotating mechanism and the dose protection mechanism; Wherein, when the translation mechanism moves from the sixth position to the fifth position, it drives the dose protection mechanism to reset from the fourth position to the third position, and drive the rotating mechanism to reset from the second position to the first position.

15. The respiratory triggering device according to claim 14, wherein, The dose protection mechanism is slidably arranged on the bracket; the dose protection mechanism includes the main body part, and the plate-shaped part is connected to the side of the main body part away from the elastic part; one end of the rotating shaft is connected with the convex rod, and the accommodating groove is arranged on the main body part; The translational mechanism includes a support member and a push rod connected to each other, the support member abuts against the convex rod, and at least part of the push rod is arranged in the accommodating groove; When the translational mechanism moves from the sixth position to the fifth position, the support member pushes the convex rod, so that the rotating mechanism resets from the second position to the first position, and the push rod pushes the main body part, so that the dose protection mechanism resets from the fourth position to the third position.

16. The respiratory triggering device according to claim 11, wherein, Along the first direction, the airway chamber and the drug delivery chamber are arranged at intervals; along the second direction, the first air flow channel and the rotating mechanism are arranged on one side of the airway chamber; the dose protection mechanism slides along the second direction; the axial direction of the rotating shaft is the third direction; The first direction, the second direction and the third direction are perpendicular to each other.

17. A dry powder inhaler, wherein, Comprising: A housing assembly, including a housing and a mouthpiece; A respiration triggering device, arranged in the housing, and the respiration triggering device is the respiration triggering device according to any one of claims 10-16; Wherein, the mouthpiece is communicated with the airway chamber.

18. The dry powder inhaler according to claim 17, wherein, The respiration triggering device is the respiration triggering device according to claim 14 or 15; the dry powder inhaler further includes: A cover body, rotatably connected to the housing assembly, the cover body can rotate between a seventh position and an eighth position, and when the cover body rotates from the eighth position to the seventh position, it drives the translational mechanism to move from the sixth position to the fifth position; when the cover body is in the seventh position, it covers the mouthpiece and limits the rotating mechanism to the first position through the translational mechanism; when the cover body is in the eighth position, it exposes the mouthpiece and releases the limit on the translational mechanism.

19. The dry powder inhaler according to claim 18, wherein, The cover body is connected to the translational mechanism, and by rotating the cover body between the seventh position and the eighth position, it drives the translational mechanism to slide between the fifth position and the sixth position; or, The bracket is further provided with an elastic arm, when the translational mechanism is in the fifth position, the elastic arm abuts against the translational mechanism; when the cover body is in the eighth position, the elastic arm drives the translational mechanism to slide from the fifth position to the sixth position; or, When the rotating mechanism rotates from the first position to the second position, it drives the translational mechanism to slide from the fifth position to the sixth position; or, When the dose protection mechanism moves from the third position to the fourth position, it drives the translational mechanism to slide from the fifth position to the sixth position.

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