Rotating mechanism, dose protection mechanism, respiration triggering device and dry powder inhaler

Abstract

The invention discloses a rotating mechanism, a dose protection mechanism, a respiration triggering device and a dry powder inhaler. The rotating mechanism is applied to the respiration triggering device and comprises a rotating shaft, a rotating shaft and a rotating shaft, the baffle is connected to the outer side surface of the rotating shaft; wherein the rotating mechanism can rotate between a first position and a second position, and when the rotating mechanism is located at the first position, a first airflow channel of the respiration triggering device is blocked; when the baffle moves from the first position to the second position, the baffle rotates around the rotating shaft to open the first airflow channel. Through the arrangement, the problem that in the prior art, the medicine powder depolymerization effect is poor can be effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of inhalation devices, and in particular to a rotating mechanism, a dose protection mechanism, a breathing trigger device and a dry powder inhaler. Background Art

[0002] For a blister-type dry powder inhaler, the medicinal powder is generally inhaled from the dosing chamber to the mouthpiece by means of air flow inhalation for the user to inhale. However, for the existing blister-type dry powder inhalation devices, it is impossible to ensure the protection of the medicinal powder under the condition of low-speed air flow inhalation. During the user's suction process, the air flow has a poor effect on the disaggregation of the medicinal powder, resulting in low utilization rate of the medicinal powder and easy waste of the medicinal powder. Summary of the Invention

[0003] The present application mainly provides a rotating mechanism, a dose protection mechanism, a breathing trigger device and a dry powder inhaler to solve the problem of poor disaggregation effect of the medicinal powder in the existing dry powder inhaler.

[0004] To solve the above technical problem, a technical solution adopted in the present application is: to provide a rotating mechanism applied to a breathing trigger device, including:

[0005] A rotating shaft having a notch on its outer surface;

[0006] A baffle connected to the outer surface of the rotating shaft;

[0007] 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 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.

[0008] Wherein, a convex rod is connected to one end of the rotating shaft;

[0009] One end of the side surface 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 and the baffle have an included angle.

[0010] 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 one end of the baffle away from the rotating shaft.

[0011] Wherein, a chamfer is arranged at one end of the flange away from the rotating shaft.

[0012] Wherein, the baffle further has a second surface opposite to the first surface, and a stopper is provided on the second surface; the stopper is provided at an 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 a 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.

[0013] To solve the above technical problems, another technical solution adopted by the present application is: to provide a dose protection mechanism, which is applied to a breath trigger device.

[0014] The dose protection mechanism can move between a third position and a fourth position; the dose protection mechanism includes a plate-shaped portion, and the plate-shaped portion has a first communication hole and a second communication hole spaced apart from each other.

[0015] When the dose protection mechanism is in the third position, the plate-shaped portion blocks the 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 the second air flow channel, and the plate-shaped portion is used to block the airway chamber.

[0016] Wherein, the dose protection mechanism further includes a body portion, and a limiting member is provided on the body portion.

[0017] Wherein, the limiting member is a convex column obliquely provided on one surface of the body portion, and the convex column has a free end.

[0018] Wherein, both the first communication hole and the second communication hole are circular holes, and are arranged at intervals in the moving direction of the dose protection mechanism.

[0019] The body portion is further provided with a receiving groove.

[0020] To solve the above technical problems, another technical solution adopted by the present application is: to provide a breath trigger device, including:

[0021] An airway chamber;

[0022] A rotating mechanism capable of rotating between a first position and a second position;

[0023] A dose protection mechanism capable of moving between a third position and a fourth position;

[0024] Wherein, when the negative pressure in the airway chamber of the breath 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

[0025] When the negative pressure in the airway chamber of the breathing trigger device is greater than a preset threshold, the rotating mechanism and the dose protection mechanism move so as to change the connection mode of the air flow channel of the breathing trigger device.

[0026] Wherein, the rotating mechanism is the rotating mechanism as described above;

[0027] The dose protection mechanism is the dose protection mechanism as described above;

[0028] The breathing trigger device further includes a drug delivery chamber spaced from the airway chamber; the airway chamber is communicated with the drug delivery chamber 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;

[0029] Wherein, 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 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 is not communicated with the drug delivery chamber, 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 with the drug delivery chamber, and the third air flow channel is blocked.

[0030] Wherein, the breathing trigger device further includes:

[0031] A bracket having the airway chamber and the drug delivery chamber spaced apart; the rotating mechanism is rotatably provided on the bracket, and the dose protection mechanism is movably provided on the bracket;

[0032] An elastic member, which is in contact with the dose protection mechanism and is used to drive the dose protection mechanism to move from the third position to the fourth position;

[0033] 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.

[0034] 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 a counterpoint manner to form a part of the second air flow channel; the bracket is further provided with a third communication hole, and the third communication hole is spaced from the airway chamber;

[0035] 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 and the third communication hole are in alignment and communication 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 in alignment and communication in sequence to form the second air flow channel.

[0036] 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 rotation mechanism and the dose protection mechanism;

[0037] 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 drives the rotation mechanism to reset from the second position to the first position.

[0038] Wherein, the dose protection mechanism is slidably arranged on the bracket; the dose protection mechanism includes the body part, and the plate-shaped part is connected to the side of the body part away from the elastic part; one end of the rotating shaft is connected with the convex rod, and the body part is provided with the accommodating groove;

[0039] The translation mechanism includes a support member and a push rod which are connected to each other. The support member abuts against the convex rod, and at least a part of the push rod is arranged in the accommodating groove;

[0040] When the translation mechanism moves from the sixth position to the fifth position, the support member pushes the convex rod so that the rotation mechanism resets from the second position to the first position, and the push rod pushes the body part so that the dose protection mechanism resets from the fourth position to the third position.

[0041] Wherein, along a first direction, the airway chamber and the drug administration chamber are arranged at intervals; along a second direction, the first air flow channel and the rotation 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 a third direction;

[0042] The first direction, the second direction and the third direction are perpendicular to each other.

[0043] To solve the above technical problems, another technical solution adopted by the present application is: to provide a dry powder inhaler, including:

[0044] A housing assembly, including a housing and a mouthpiece;

[0045] A breathing trigger device, disposed within the housing, and the breathing trigger device is any one of the breathing trigger devices described above;

[0046] Wherein, the mouthpiece is in communication with the airway chamber.

[0047] In some embodiments, the dry powder inhaler further comprises:

[0048] 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 translation 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 rotation mechanism to the first position through the translation mechanism; when the cover body is in the eighth position, it exposes the mouthpiece and releases the limit on the translation mechanism.

[0049] In some embodiments, the cover body is connected to the translation mechanism, and by rotating the cover body between the seventh position and the eighth position, it drives the translation mechanism to slide between the fifth position and the sixth position; or,

[0050] The bracket is further provided with an elastic arm, which abuts against the translation mechanism when the translation mechanism is in the fifth position; 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,

[0051] When the rotation mechanism rotates from the first position to the second position, it drives the translation mechanism to slide from the fifth position to the sixth position; or,

[0052] When the dose protection mechanism moves from the third position to the fourth position, it drives the translation mechanism to slide from the fifth position to the sixth position.

[0053] The beneficial effects of the present application are: Different from the prior art, the present application discloses a rotation mechanism, a dose protection mechanism, a breathing trigger device and a dry powder inhaler. The rotation mechanism is applied to the breathing trigger device, and the rotation mechanism includes: a rotating shaft with a notch on the outer side surface; a baffle plate 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 air flow channel of the breathing trigger device; when moving from the first position to the second position, the baffle plate rotates around the rotating shaft to open the first air flow channel. Through the above settings, the problem of poor powder depolymerization effect in the prior art can be effectively solved. Description of the Drawings

[0054] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings, where:

[0055] Figure 1 is a schematic structural diagram of the dry powder inhaler provided by the present application in the first state;

[0056] Figure 2 is Figure 1 an exploded schematic diagram of the dry powder inhaler provided;

[0057] Figure 3 is Figure 1 a schematic structural diagram of the breathing trigger device of the dry powder inhaler provided by the present application in the first state;

[0058] Figure 4A is Figure 3 a cross-sectional schematic diagram of the breathing trigger device provided;

[0059] Figure 4B is Figure 4A a partially enlarged schematic diagram of;

[0060] Figure 5 is Figure 3 another cross-sectional schematic diagram of the breathing trigger device provided;

[0061] Figure 6 is a schematic structural diagram of the dry powder inhaler provided by the present application in the second state;

[0062] Figure 7 is Figure 6 a schematic structural diagram of the breathing trigger device of the dry powder inhaler provided by the present application in the second state;

[0063] Figure 8A is Figure 7 a cross-sectional schematic diagram of the breathing trigger device provided;

[0064] Figure 8B is Figure 8A a partially enlarged schematic diagram of;

[0065] Figure 9A is Figure 7 another cross-sectional schematic diagram of the breathing trigger device provided;

[0066] Figure 9B is Figure 9A a partially enlarged schematic diagram of;

[0067] Figure 10 isFigure 1 Schematic structural diagram of the mouthpiece of the dry powder inhaler provided

[0068] Figure 11 is Figure 3 Schematic structural diagram of one angle of the bracket of the breath trigger device provided

[0069] Figure 12 is Figure 11 Schematic structural diagram of another angle of the bracket provided

[0070] Figure 13 is Figure 11 Partial enlarged schematic diagram of one cross-section of the bracket provided

[0071] Figure 14 is Figure 11 Partial enlarged schematic diagram of another cross-section of the bracket provided

[0072] Figure 15 is Figure 3 Schematic structural diagram of one angle of the rotating mechanism of the breath trigger device provided

[0073] Figure 16 is Figure 15 Schematic structural diagram of another angle of the rotating mechanism provided

[0074] Figure 17 is Figure 3 Schematic structural diagram of the dose protection mechanism of the breath trigger device provided

[0075] Figure 18 is Figure 3 Schematic structural diagram of the translational mechanism of the breath trigger device provided

[0076] Figure 19 Schematic structural diagram of an embodiment of the airway structure of the dry powder inhaler provided in this application

[0077] Figure 20 is Figure 19 Schematic cross-sectional diagram of one of the airway structures provided

[0078] Figure 21 is Figure 19 Schematic cross-sectional diagram of another of the airway structures provided

[0079] Figure 22 is Figure 19 Schematic structural diagram of the airway chamber of the airway structure provided

[0080] Figure 23 is Figure 19 Top view schematic structural diagram of the manifold of the airway structure provided

[0081] Figure 24 isFigure 23 Schematic diagram of the upward view of the provided manifold;

[0082] Figure 25 is Figure 1 Schematic diagram of the structure of the lid of the provided dry powder inhaler;

[0083] Figure 26 Schematic diagram of the structure of an embodiment of the winding device provided by the present application;

[0084] Figure 27 is Figure 25 Cross-sectional schematic diagram of the provided winding device;

[0085] Figure 28 is Figure 25 Schematic diagram of the structure of the tape winding rod of the provided winding device;

[0086] Figure 29 is Figure 25 Top view schematic diagram of the tape winding gear of the provided winding device;

[0087] Figure 30 is Figure 29 Schematic diagram of the upward view of the provided tape winding gear;

[0088] Figure 31 is Figure 25 Schematic diagram of the structure of the wave washer of the provided winding device.

[0089] Explanation of the reference numerals in the attached drawings:

[0090] Dry powder inhaler 800; Breath-triggering device 100; Bracket 1; Third air inlet 10; Airway chamber 11; Second powder discharge hole 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 part 117; Second airway part 118; Mixed airway part 119; Vortex airway 110; Drug delivery chamber 12; First powder discharge hole 121; Ventilation hole 122; First air flow channel Q1; Second air flow channel Q2; Third air flow channel Q3; Intake channel Q4; First direction A1; Second direction A2; Third direction A3; Elastic arm 13; Third communication hole 14; Air outlet 15; First air inlet 16; Second air inlet 17; Bracket body 18; Manifold 19; Embedded part 191; Annular embedded section 1911; First embedded section 1912; Second embedded section 1913; Covering part 192; Communication part 193; Rotating mechanism 2; Baffle 21; First surface 211; Flange 213; Second surface 212; Stopper 214; Limiting part 2141; Rotating shaft 22; Notch 221; Groove 222; Convex rod 23; Dose protection mechanism 3; Plate-like part 31; First communication hole 311; Second communication hole 312; Limiting part 32; Body part 33; Accommodation groove 331; Missing hole 34; Elastic part 4; Translational mechanism 5; Support part 51; Support part 511; Connection part 512; Push rod 52; Protruding part 53; Medicine strip 6; Substrate strip 61; Medicine accommodating part 62; Medicine strip accommodating groove 7; Housing assembly 200; Housing 201; External air inlet 2011; Grille 2012; First housing 206; Second housing 207; First convex part 208; Second convex part 209; Mouthpiece 202; Annular surrounding part 203; Surrounding wall 204; Depressed part 205; Cover body 300; Arc part 301; Rotating part 302; Unwinding wheel 400; Medicine strip mounting shaft 401; Cover sheet winding wheel 500; Drug delivery wheel 600; Substrate winding wheel 700; Rewinding device 900; Tape winding rod 91; Rod-shaped part 911; First clamping part 912; Second clamping part 913; First rod section 914; Second rod section 915; First clamping groove 916; Second clamping groove 917; Tape winding gear 92; Central hole 921; Limiting groove 922; Accommodation groove 923; Washer 93; Rigid washer 931; Elastic washer 932. Detailed implementation mode

[0091] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0092] The terms "first", "second", and "third" in the embodiments of the present application are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0093] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0094] Refer to Figures 1 to 10 , Figure 1 is a schematic structural diagram of the dry powder inhaler provided by the present application in the first state, Figure 2 is Figure 1 an exploded schematic diagram of the dry powder inhaler provided by Figure 3 is Figure 1 a schematic structural diagram of the breathing trigger device of the dry powder inhaler provided by the present application in the first state, Figure 4A is Figure 3 a cross-sectional schematic diagram of the breathing trigger device provided by Figure 4B is Figure 4A a partial enlarged schematic diagram of Figure 5 is Figure 3 another cross-sectional schematic diagram of the breathing trigger device provided by Figure 6 is a schematic structural diagram of the dry powder inhaler provided by the present application in the second state, Figure 7 is Figure 6 a schematic structural diagram of the breathing trigger device of the dry powder inhaler provided by the present application in the second state, Figure 8A is Figure 7 a cross-sectional schematic diagram of the breathing trigger device provided by Figure 8B is Figure 8A a partial enlarged schematic diagram of Figure 9A is Figure 7 another cross-sectional schematic diagram of the breathing trigger device provided by Figure 9B is Figure 9APartial enlarged schematic diagram Figure 10 is Figure 1 A schematic structural diagram of the mouthpiece of the dry powder inhaler provided

[0095] Refer to Figure 1 and Figure 2 In this application, a dry powder inhaler 800 is provided. The dry powder inhaler 800 includes a housing assembly 200, a breathing trigger device 100, and a cover 300. The cover 300 is rotatably connected to the housing assembly 200. The housing assembly 200 includes a housing 201 and a mouthpiece 202. The housing 201 is connected to the mouthpiece 202, and the breathing trigger device 100 is disposed inside 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 respectively, 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, and the cover 300 covers the mouthpiece 202. When the dry powder inhaler 800 is in the second state, the cover 300 is in an open state, and the cover 300 exposes the mouthpiece 202 so that the user can inhale the medicine powder at the position of 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 in place state.

[0096] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 In a specific embodiment, the housing 201 includes a first housing 206 and a second housing 207 that are connected to each other. The first housing 206 and the second housing 207 cooperate to form a receiving space for accommodating structural components such as the breathing trigger device 100, and the mouthpiece 202 is connected to one end of the housing 201. See Figure 6 An external air inlet 2011 is provided on the housing 201, and the external air inlet 2011 can be provided on the first housing 206 and / or the second housing 207. As Figure 1 shown, when the dry powder inhaler 800 is in the first state, i.e., the closed cover state, the cover 300 is closed, and the cover 300 blocks the external air inlet 2011 and the mouthpiece 202. As Figure 6 shown, when the dry powder inhaler 800 is in the second state, i.e., the open state, the cover 300 is open, and the external air inlet 2011 and the mouthpiece 202 are exposed. External air can enter the housing assembly 200 through the external air inlet 2011, specifically, into the receiving space formed by the cooperation of the first housing 206 and the second housing 207. Further, see Figure 6, a grille 2012 may also be provided on the housing 201. The grille 2012 protrudes from the outer surface of the housing 201 to prevent the problem of poor air intake caused by the user's lips blocking the external air inlet 2011 when inhaling from the suction nozzle 202. In a specific embodiment, a plurality of external air inlets 2011 and a plurality of grilles 2012 may be provided on the housing 201, and the external air inlets 2011 and the grilles 2012 may be alternately arranged to better prevent the external air inlet 2011 from being blocked by the lips and avoid poor air intake.

[0097] Specifically, refer to Figures 3 to 9B , the breathing 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 chamber 11 and a drug delivery chamber 12 arranged at intervals. The airway chamber 11 is communicated with the external atmosphere through a first air flow channel Q1. The airway chamber 11 is communicated with the drug delivery chamber 12 through a second air flow channel Q2. The suction nozzle 202 is communicated with the airway chamber 11. The rotating mechanism 2 is rotatably arranged on the bracket 1 and can rotate 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 body 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 air flow channel Q1, and the airway chamber 11 cannot be communicated with the external atmosphere through the first air flow channel Q1. When the dry powder inhaler 800 is in the second state, i.e., the open lid in place state, and the negative pressure in the airway chamber 11 is greater than a preset threshold, that is, when the flow rate of the user's suction air flow is greater than the working 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 air flow channel Q1 is opened. Wherein, the first position is the initial position where the rotating mechanism 2 is located when the breathing trigger device 100 is not triggered, and the second position is the final position where the rotating mechanism 2 is located after the breathing trigger device 100 is triggered. That is, when the flow rate of the air flow during the user's suction is large enough to make the negative pressure in the airway chamber 11 greater than the preset threshold, under the pressure difference between the external air pressure and the air pressure in the airway chamber 11, the external air pressure will push the rotating mechanism 2 to rotate so that the port of the first air flow channel Q1 is opened, and the first air flow channel Q1 is communicated with the external atmosphere through the port. When the flow rate of the air flow during the user's suction is small and the negative pressure in the airway chamber 11 is less than or equal to the preset threshold, the rotating mechanism 2 will not rotate under the pushing action of the external air pressure to open the port of the first air flow channel Q1.

[0098] The dose protection mechanism 3 is movably arranged on the bracket 1 and can move between a third position and a fourth position. When the dose protection mechanism 3 is in the third position, the dose protection mechanism 3 blocks the second air flow channel Q2. When the dose protection mechanism 3 is in the fourth position, the second air flow channel Q2 is opened to connect the airway chamber 11 and the medicine administration chamber 12. Specifically, it connects the medicine accommodation part 62 of the substrate tape 61 in the airway chamber 11 and the medicine administration chamber 12. The third position is the initial position where the dose protection mechanism 3 is located when the breathing trigger device 100 is not triggered, and the fourth position is the final position where the dose protection mechanism 3 is located after the breathing trigger device 100 is triggered. The elastic member 4 is in contact with the dose protection mechanism 3 and is used to drive the dose protection mechanism 3 to move from the third position to the fourth position. Among them, when the rotating mechanism 2 is in the first position, the rotating mechanism 2 limits 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 limit on the dose protection mechanism 3, so that the elastic member 4 can drive the dose protection mechanism 3 to move from the third position to the fourth position. Among them, the elastic member 4 can be a spring or an elastic member with any other structure.

[0099] It can be understood that by arranging the breathing trigger device 100 in the dry powder inhaler 800, and the airway chamber 11 in the breathing trigger device 100 is connected to the medicine accommodation part 62 in the medicine administration chamber 12 through the second air flow channel Q2, the airway chamber 11 is connected to the external atmosphere through the first air flow channel Q1, and the rotating mechanism 2 is rotatably arranged on the bracket 1, so that only when the air flow velocity is large enough when the user sucks and the negative pressure in the airway chamber 11 is greater than the preset threshold, the rotating mechanism 2 will rotate from the first position to the second position under the pushing action of the external air pressure. Furthermore, the port of the first air flow channel Q1 is opened, and the rotating mechanism 2 releases the limit on the dose protection mechanism 3, so that the dose protection mechanism 3 can move from the third position to the fourth position under the action of the elastic member 4 to open the second air flow channel Q2, so that the airway chamber 11 and the medicine administration chamber 12 can be connected through the second air flow channel Q2. Furthermore, the medicine powder in the medicine accommodation part 62 in the medicine administration chamber 12 can enter the airway chamber 11 through the second air flow channel Q2 and be depolymerized by the gas and then be sucked by the user at the suction nozzle 202. That is to say, by arranging the breathing trigger device 100, the second air flow channel Q2 will be opened only when the air flow velocity is large enough when the user sucks, which ensures the depolymerization effect of the high-speed air flow on the medicine powder in the medicine accommodation part 62 in the medicine administration chamber 12 during the user's suction process, improves the utilization rate of the medicine powder, reduces the waste of the medicine powder, and solves the problem of poor depolymerization effect of the medicine powder in the existing dry powder inhaler.

[0100] In one embodiment, the breathing trigger device 100 further includes a translation mechanism 5. The translation mechanism 5 is movably arranged on the bracket 1 and can move between a fifth position and a sixth position. The translation mechanism 5 is 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, that is, the rotation mechanism 2 and the dose protection mechanism 3 can be driven to reset by the movement of the translation mechanism 5.

[0101] Refer to Figures 11 to 18 , Figure 11 which Figure 3 is a schematic structural view of the bracket of the breathing trigger device provided at a certain angle, Figure 12 and Figure 11 is a schematic structural view of the bracket provided at another angle, Figure 13 and Figure 11 is a partially enlarged schematic view of a cross-section of the bracket provided, Figure 14 and Figure 11 is a partially enlarged schematic view of another cross-section of the bracket provided, Figure 15 and Figure 3 is a schematic structural view of the rotation mechanism of the breathing trigger device provided at a certain angle, Figure 16 and Figure 15 is a schematic structural view of the rotation mechanism provided at another angle, Figure 17 and Figure 3 is a schematic structural view of the dose protection mechanism of the breathing trigger device, Figure 18 and Figure 3 is a schematic structural view of the translation mechanism of the breathing trigger device.

[0102] See Figure 4A , Figure 4B and Figure 8A , Figure 8B, the airway chamber 11 has second powder discharge holes 111, and the medicine administration chamber 12 has first powder discharge holes 121. The first powder discharge holes 121 and the second powder discharge holes 111 are arranged at intervals in a position alignment manner, forming a part of the second air flow channel Q2. It should be noted that the "position alignment" in this application can be complete position alignment or partial position alignment, as long as there is at least partial overlap in the projection in a certain direction, it can be called position alignment setting. For example, the first powder discharge holes 121 and the second powder discharge holes 111 are arranged in a position alignment manner. The diameter of the first powder discharge holes 121 can be equal to the diameter of the second powder discharge holes 111, and the projections of the first powder discharge holes 121 and the second powder discharge holes 111 completely overlap, that is, the first powder discharge holes 121 and the second powder discharge holes 111 are completely in position alignment; or, the diameter of the first powder discharge holes 121 is equal to the diameter of the second powder discharge holes 111, and only partial overlap exists in the projections of the first powder discharge holes 121 and the second powder discharge holes 111, then the first powder discharge holes 121 and the second powder discharge holes 111 are partially in position alignment and the other part is misaligned; the diameter of the first powder discharge holes 121 is greater than the diameter of the second powder discharge holes 111, and the projection of the second powder discharge holes 111 falls within the projection range of the first powder discharge holes 121, and partial overlap exists in the projections of the first powder discharge holes 121 and the second powder discharge holes 111, then the first powder discharge holes 121 and the second powder discharge holes 111 are partially in position alignment; or, the diameter of the first powder discharge holes 121 is greater than the diameter of the second powder discharge holes 111, and only part of the projection of the second powder discharge holes 111 falls within the projection range of the first powder discharge holes 121, then the first powder discharge holes 121 and the second powder discharge holes 111 are partially in position alignment. The above-mentioned various situations can all be called the position alignment setting of the first powder discharge holes 121 and the second powder discharge holes 111. Preferably, the first powder discharge holes 121 and the second powder discharge holes 111 have the same shape. For example, both the first powder discharge holes 121 and the second powder discharge holes 111 are circular holes, and the diameters of the first powder discharge holes 121 and the second powder discharge holes 111 are the same and are completely in position alignment, which is more conducive to the medicine powder entering from the first powder discharge holes 121 into the second powder discharge holes 111 and reducing the waste of the medicine powder.

[0103] Specifically, the top wall 114 of the medicine administration chamber 12 and the bottom wall 113 of the airway chamber 11 are arranged at intervals. The second powder discharge holes 111 are arranged on the bottom wall 113 of the airway chamber 11, and the first powder discharge holes 121 are arranged on the top wall 114 of the medicine administration chamber 12. See Figure 17, the dose protection mechanism 3 includes a plate-shaped portion 31, and at least part of the plate-shaped portion 31 is movably disposed between the top wall 114 of the medicine delivery chamber 12 and the bottom wall 113 of the air passage chamber 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 is misaligned with the first powder discharge hole 121, and the dose protection mechanism 3 blocks the first powder discharge hole 121. Specifically, the plate-shaped portion 31 blocks the first powder discharge hole 121, so that the second air flow channel Q2 cannot communicate. When the dose protection mechanism 3 is in the fourth position, the first communication hole 311 is located between the first powder discharge hole 121 and the second powder discharge hole 111, so that the first powder discharge hole 121, the first communication hole 311, and the second powder discharge hole 111 are aligned and communicated in sequence to form the second air flow channel Q2. That is, when the dose protection mechanism 3 is in the third position, the second air flow channel Q2 cannot communicate, and when the dose protection mechanism 3 is in the fourth position, the second air flow channel Q2 will communicate. The movement state of the rotation mechanism 2 is determined by the magnitude relationship between the negative pressure in the air passage chamber 11 and the preset threshold, and then the movement state of the dose protection mechanism 3 between the third position and the fourth position is controlled, realizing the switching of the blocking and communication states of the second air flow channel Q2, so that only when the air flow velocity is large enough during user suction and the negative pressure in the air passage chamber 11 is greater than the preset threshold, the second air flow channel Q2 will communicate, and the medicine powder in the first powder discharge hole 121 will be inhaled, which is more conducive to the disaggregation of the medicine powder by the air flow and improves the utilization rate of the medicine powder. At the same time, when the dose protection mechanism 3 is in the third position, the medicine powder is still in a relatively closed state, avoiding the leakage or contamination of the medicine powder.

[0104] See Figure 3 , Figure 4A , Figure 4B , Figure 7 , Figure 8A , Figure 8B , Figures 15 to 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, and the baffle 21 is used to block the first air flow channel Q1. In a specific embodiment, as Figure 3 and Figure 7 , Figure 15 and Figure 16As shown, the baffle 21 is in the shape of a flat plate. The baffle 21 has opposite first surface 211 and second surface 212. The first surface 211 is the surface of the baffle 21 away from the airway chamber 11, and the second surface 212 is the surface of the baffle 21 close to the airway chamber 11. A flange 213 is provided on the first surface 211, and a stopper 214 is provided on the second surface 212. The shape of the flange 213 is consistent with the side wall cross-sectional shape of the port of the first air flow channel Q1, so that the flange 213 can better cooperate with the side wall of the port of the first air flow channel Q1 to block the port of the first air flow channel Q1. Among them, the flange 213 is located on the side of the baffle 21 away from the airway chamber 11, the stopper 214 is located on the side of the baffle 21 close to the airway chamber 11, and both the flange 213 and the stopper 214 are provided at one 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 out of the second surface 212 along a direction parallel to the second surface 212 and forms a limiting portion 2141. Specifically, along the direction parallel to the second surface 212, the size of the flange 213 is smaller than that of the stopper 214, along the direction perpendicular to the baffle 21, the size of the flange 213 is larger than that of the stopper 214, and 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, both the flange 213 and the stopper 214 can be used to cooperate with the suction nozzle 202 to block the first air flow channel Q1.

[0105] Specifically, as Figure 3 , Figure 4A , Figure 4B , Figure 8A , Figure 8B and Figure 10As shown, an annular surrounding portion 203 is connected to the surface of the suction nozzle 202 close to the airway chamber 11. The annular surrounding portion 203 is used to cooperate with the airway chamber 11 and the bracket 1 to form a first air flow channel Q1. Among them, the annular surrounding portion 203 includes a surrounding wall 204. The surrounding wall 204 is arranged at an interval from the airway chamber 11. The bracket 1, the rotating mechanism 2, the annular surrounding portion 203 and the airway chamber 11 jointly surround to form the first air flow channel Q1. The surrounding wall 204 is the side wall of the port of the first air flow channel Q1. The rotating mechanism 2 is arranged at the port position of the first air flow channel Q1. A recess 205 is arranged on the end face of the surrounding wall 204 close to the dose protection mechanism 3. In a specific embodiment, the recess 205 is arc-shaped, and the flange 213 is arc-shaped. When the rotating mechanism 2 is in the first position, that is, the initial position of the rotating mechanism 2 when the breathing trigger device 100 is not triggered, the baffle 21 is completely aligned with the surrounding wall 204. The surface of the flange 213 away from the rotating shaft 22 is an arc surface and abuts against the bottom surface of the recess 205 to block the port of the first air flow channel Q1. When the baffle 21 rotates from the first position to the second position, the port of the first air flow channel Q1 is opened. After the external atmosphere enters the interior of the housing 201, it enters the first air flow channel Q1 through the gap between the flange 213 of the baffle 21 and the bottom surface of the recess 205 of the surrounding wall 204, and then enters the interior of the airway chamber 11 through the first air flow channel Q1, which is convenient for better deflocculation of the medicament powder in the airway chamber 11.

[0106] It can be understood that the flange 213 protrudes from the first surface 211. During the process of the baffle 21 rotating around the rotating shaft 22 from the first position to the second position, the flange 213 can ensure that the intake cross-sectional area when the external atmosphere enters the first air flow channel Q1 remains basically the same throughout the process, that is, the distance between the flange 213 and the bottom wall of the recess 205 remains basically the same, thereby ensuring the consistency of the suction resistance during the movement of the entire rotating mechanism 2 and avoiding the sudden change of the suction resistance of the dry powder inhaler 800 when the baffle 21 rotates without setting the flange 213. Only when the suction air flow velocity of the user is large enough and the negative pressure in the airway chamber 11 is large enough, the baffle 21 will rotate around the rotating shaft 22 by a large angle, and the flange 213 will completely rotate to not contact the bottom surface of the recess 205 of the surrounding wall 204, thereby opening the port of the first air flow channel Q1 and connecting the first air flow channel Q1 with the external atmosphere. That is, the flange 213 can further ensure that when the suction air flow velocity of the user is large enough and the negative pressure in the airway chamber 11 is greater than the preset threshold, the first air flow channel Q1 is opened to further improve the deflocculation effect of the medicament powder and avoid waste of the medicament powder; at the same time, the flange 213 arranged on the first surface 211 can also play a certain air-gathering effect.

[0107] Further, in some embodiments, such as Figure 15 and Figure 16As shown, a chamfer is further provided at one end of the flange 213 away from the rotating shaft 22. The chamfer can be an oblique angle or a rounded angle. It can be understood that providing a chamfer at one end of the flange 213 away from the rotating shaft 22 can effectively avoid the problem that during the process of the baffle 21 rotating from the first position to the second position around the rotating shaft 22, the flange 213 interferes with the surrounding wall 204, thereby affecting the rotation of the baffle 21, and ensure the smooth rotation of the rotating mechanism 2 between the first position and the second position.

[0108] The stopper 214 is located on the side of the surrounding wall 204 close to the air duct chamber 11. In a specific embodiment, the stopper 214 is arc-shaped. The surface of the stopper 214 close to the surrounding wall 204 is a plane. The limiting portion 2141 of the stopper 214 extending out of the second surface 212 abuts against the inner side surface of the surrounding wall 204 to further block the port of the first air flow channel Q1. Ensure that when the negative pressure in the air duct 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 surrounding wall 204 of the suction nozzle 202 to better block the first air flow channel Q1, and avoid the problem that the first air flow channel Q1 is not blocked properly, resulting in waste of medicine powder due to gas entering the air duct chamber 11 through the first air flow channel Q1; at the same time, when the rotating mechanism 2 returns from the second position to the first position, the limiting portion 2141 can also abut against the inner side surface of the surrounding wall 204, thereby limiting the rotating mechanism 2 at the first position.

[0109] In other embodiments, the flange 213 and the stopper 214 can 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 air flow channel Q1, so as to facilitate better blocking of the port of the first air flow channel Q1; the baffle 21 can be provided without the flange 213 and the stopper 214. When the rotating mechanism 2 is in the first position, the end face of the baffle 21 away from the rotating shaft 22 can directly abut against the surrounding wall 204 of the suction nozzle 202 to block the first air flow channel Q1, or only the flange 213 or only the stopper 214 can be provided, which can be designed according to needs.

[0110] The dose protection mechanism 3 further has a limiting member 32. The outer side surface of the rotating shaft 22 has a notch 221. When the rotating mechanism 2 is in the first position, the limiting member 32 abuts against the outer side surface of the rotating shaft 22, so that the dose protection mechanism 3 is limited to the third position by the outer side surface of the rotating shaft 22. When the rotating mechanism 2 is in the second position, the limiting member 32 corresponds to the notch 221, thereby releasing the limitation on the dose protection mechanism 3. That is, when the rotating mechanism 2 rotates to the second position, the limiting member 32 does not abut against the outer side surface of the rotating shaft 22, and the notch 221 provided on the outer side surface of the rotating shaft 22 rotates to a position corresponding to the limiting member 32, and the limiting member 32 is correspondingly located at the position of the notch 221, so that the rotating shaft 22 no longer limits the dose protection mechanism 3, facilitating the movement of the dose protection mechanism 3.

[0111] In a specific embodiment, referring to Figure 3 、 Figure 4A 、 Figure 4B 、 Figure 7 、 Figure 8A 、 Figure 8B and Figure 17 , the dose protection mechanism 3 is slidably arranged on the bracket 1. The dose protection mechanism 3 further includes a body portion 33. The plate-like portion 31 is connected to a side of the body portion 33 away from the elastic member 4. Specifically, the limiting member 32 is a convex column obliquely arranged on a surface of the body portion 33. When the rotating mechanism 2 is in the first position, the free end of the convex column abuts against the outer side surface of the rotating shaft 22 to limit the dose protection mechanism 3 to the third position. When the baffle 21 rotates around the rotating shaft 22, the notch 221 on the outer side surface of the rotating shaft 22 rotates to the position of the free end of the convex column, and the free end of the convex column slides out of the notch 221, thereby releasing the limitation on the dose protection mechanism 3, enabling the dose protection mechanism 3 to slide from the third position to the fourth position under the drive of the elastic member 4.

[0112] In other embodiments, the limiting member 32 of the dose protection mechanism 3 can also be configured as other structures. For example, the limiting member 32 can be a groove or notch provided on the body portion 33 of the dose protection mechanism 3. The outer side surface of the rotating shaft 22 may not be provided with a notch 221, but a convex column is 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 convex column abuts against the groove 222 of the body portion 33, so that the dose protection mechanism 3 is limited to the third position by the convex column provided on the rotating shaft 22. When the baffle 21 rotates around the rotating shaft 22, the convex column on the rotating shaft 22 rotates out of the groove 222 of the body portion 33, thereby releasing the limitation on the dose protection mechanism 3, so that the dose protection mechanism 3 can 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 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 the limitation on the dose protection mechanism 3 can be released by the rotation of the rotating mechanism 2. The present application does not make any limitation on this.

[0113] Further, a receiving groove 331 is provided on the body portion 33 of the dose protection mechanism 3. Specifically, the receiving groove 331 is provided on the surface of the body portion 33 close to the translational mechanism 5. One end of the rotating shaft 22 is connected with a convex rod 23. Specifically, the convex rod 23 is connected to one end of the rotating shaft 22 close to the translational mechanism 5. Refer to Figure 18 , the translational mechanism 5 includes a support member 51 and a push rod 52 connected to each other. The support member 51 abuts against the convex rod 23 on the rotating shaft 22, and at least a part of the push rod 52 is disposed in the receiving groove 331. When the translational mechanism 5 moves from the sixth position to the fifth position, the support member 51 pushes the convex rod 23 so that the rotating mechanism 2 can be reset from the second position to the first position, and the push rod 52 pushes the body portion 33 so that the dose protection mechanism 3 can be reset from the fourth position to the third position.

[0114] Refer to Figure 25 , Figure 25 is Figure 1 a schematic structural view of the cover of the dry powder inhaler provided. Refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 , Figure 25 , the cover 300 can rotate between a seventh position and an eighth position. When the cover 300 is in the seventh position, that is, when the cover 300 is in the closed state, the nozzle 202 and the external air inlet 2011 are blocked. When the cover 300 rotates to the eighth position, that is, when the cover 300 is in the open state, the nozzle 202 and the external air inlet 2011 are exposed.

[0115] Specifically, the cover 300 is generally U-shaped, including an arc portion 301 and two rotating portions 302 connected to both ends of the arc portion 301. The two rotating portions 302 are symmetrically arranged. One rotating portion 302 is located on the side of the first housing 206 away from the second housing 207, and this rotating portion 302 is rotatably connected to the central position of the outer side surface 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 this rotating portion 302 is rotatably connected to the central position of the outer side surface of the second housing 207. The outer side surfaces of the first housing 206 and the second housing 207 are respectively provided with spaced-apart first convex portions 208 and second convex portions 209. The cover 300 can rotate between the first convex portion 208 and the second convex portion 209 along the circumferential direction of the housing assembly 200. The first convex portion 208 and the second convex portion 209 limit the cover 300 to rotate between the seventh position and the eighth position. Among them, the first convex portion 208 limits the cover 300 to the seventh position, and the second convex portion 209 limits the cover 300 to the eighth position.

[0116] In a specific embodiment, when the cover 300 rotates from the eighth position to the seventh position, that is, during the process of the cover 300 rotating from the open state to the closed state, that is, during the process of closing the cover, the cover 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 drive the rotation mechanism 2 to reset from the second position to the first position by the translation mechanism 5, and drive the dose protection mechanism 3 to reset from the fourth position to the third position.

[0117] Specifically, refer to Figure 18 , the support member 51 includes a support 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 close to the dose protection mechanism 3. The translation mechanism 5 further includes a protruding portion 53. The protruding portion 53 is connected to one end of the connecting portion 512 away from the support portion 511. The support portion 511 is used to abut against the convex rod 23 on the rotating shaft 22, so as to push the convex rod 23 when the translation mechanism 5 moves from the sixth position to the fifth position, thereby making the rotation mechanism 2 reset from the second position to the first position. During the rotation of the cover 300 from the eighth position to the seventh position, the side surface of the rotating portion 302 of the cover 300 abuts against the protruding portion 53, so as to push the protruding portion 53 of the translation mechanism 5 by the cover 300, so that the translation mechanism 5 can move from the sixth position to the fifth position.

[0118] In a specific embodiment, as Figure 25 、 Figure 18 and Figure 3As shown, the surface of the protrusion 53 close to the rotating part 302 of the cover body 300 is an arc surface, and the surface of the rotating part 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 part 302 of the cover body 300 abuts against the arc surface of the protrusion 53 to limit the translation mechanism 5 at the fifth position; during the process of opening the cover body 300, i.e., when the cover body 300 rotates from the seventh position to the eighth position, the side surface of the rotating part 302 of the cover body 300 gradually separates from the arc surface of the protrusion 53. When the cover body 300 rotates to the eighth position, i.e., the cover is opened in place, the side surface of the rotating part 302 is completely separated from the arc surface of the protrusion 53, thereby releasing the limit on the translation mechanism 5; during the process of closing the cover body 300, i.e., when the cover body 300 rotates from the eighth position to the seventh position, the side surface of the rotating part 302 of the cover body 300 gradually abuts against the arc surface of the protrusion 53. During the circumferential rotation of the rotating part 302 of the cover body 300 along the circumference of the housing 201, the side surface of the rotating part 302 abuts against different positions of the arc surface of the protrusion 53, and the side surface of the rotating part 302 pushes the protrusion 53 to move 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, i.e., the cover is closed in place, the side surface of the rotating part 302 of the cover body 300 re-limits the translation mechanism 5 at the fifth position.

[0119] When the cover body 300 is in the seventh position, the cover body 300 covers the suction nozzle 202, and the user cannot suck from the position of the suction nozzle 202. The cover body 300 limits the translation mechanism 5 at the fifth position, and the translation mechanism 5 limits the rotation mechanism 2 at the first position, and the rotation mechanism 2 limits the dose protection mechanism 3 at the third position. At this time, the suction nozzle 202 is covered. Even if the negative pressure in the airway chamber 11 is greater than the preset threshold, the rotation mechanism 2 will only be limited at the first position and will not rotate. When the cover body 300 is in the eighth position, the suction nozzle 202 is exposed, and the cover body 300 releases the limit on the translation mechanism 5, thus facilitating the translation mechanism 5 to move from the fifth position to the sixth position.

[0120] In one embodiment, the cover body 300 can be connected to the translation mechanism 5, and the translation mechanism 5 can be directly driven to slide between the fifth position and the sixth position by the rotation of 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 cover body 300 directly drives the translation mechanism 5 to move from the fifth position to the sixth position.

[0121] In one embodiment, as Figure 3As shown, an elastic arm 13 can be provided on the bracket 1. When the translation mechanism 5 is in the fifth position, the elastic arm 13 abuts against the translation mechanism 5, causing the elastic arm 13 to be in a compressed state. When the cover body 300 is in the eighth position, that is, after the cover body 300 releases the limit on the translation mechanism 5, the elastic arm 13 drives the translation mechanism 5 to slide from the fifth position to the sixth position. At this time, the support portion 511 of the translation mechanism 5 no longer abuts against the convex rod 23 of the rotation mechanism 2, that is, the support portion 511 no longer interferes with the movement of the convex rod 23 of the rotation mechanism 2, which can avoid the problem that the support portion 511 of the translation mechanism 5 blocks the normal rotation of the rotation mechanism 2 during the breathing trigger process after the cover body 300 is opened in place, resulting in abnormal breathing trigger function.

[0122] In an embodiment, when the rotation mechanism 2 rotates directly from the first position to the second position, it can drive the translation mechanism 5 to slide from the fifth position to the sixth position. Specifically, after the cover body 300 releases the limit on the translation mechanism 5, the convex rod 23 connected to the rotating shaft 22 of the rotation mechanism 2 abuts against the support portion 511 of the translation mechanism 5, and by rotating the baffle 21 around the rotating shaft 22, the convex 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.

[0123] In an embodiment, when the dose protection mechanism 3 moves from the third position to the fourth position, it can also drive the translation mechanism 5 to slide from the fifth position to the sixth position. Specifically, after the cover body 300 releases the limit on the translation mechanism 5, the rotation of the baffle 21 of the rotation mechanism 2 around the rotating shaft 22 releases the limit on the dose protection mechanism 3, so that the dose protection mechanism 3 moves from the third position to the fourth position under the driving action of the elastic member 4. The push rod 52 of the translation mechanism 5 abuts against the side wall of the accommodating groove 331 of the dose protection mechanism 3, and 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.

[0124] In other embodiments, it is not necessary to drive the translation mechanism 5 to move from the sixth position to the fifth position by the rotation of the cover body 300 from the eighth position to the seventh position. For example, a separate reset mechanism can 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 by the reset mechanism; or, it is not necessary to limit the translation mechanism 5 to the fifth position by the cover body 300. For example, a separate limiting mechanism can be provided to limit the translation mechanism 5 to the fifth position.

[0125] In a specific embodiment, such as Figure 15 and Figure 16As shown, the side surface of one end of the rotating shaft 22 has a groove 222, one end of the convex rod 23 is connected to the side wall of the groove 222, and there is an included angle between the convex rod 23 and the baffle 21. Specifically, the convex rod 23 is located on the side of the baffle 21 away from the first surface 211. It can be understood that a groove 222 is provided on the side surface of one end of the rotating shaft 22, and one end of the convex 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 convex rod 23 to drive the convex rod 23 to rotate around the rotating shaft 22 and reset the rotating mechanism 2 to the first position, the convex rod 23 is not easily broken under the action of the support member 51, and the rotation efficiency of the convex rod 23 and the rotating shaft 22 is higher under the action of the support member 51. Moreover, there is an included angle between the convex rod 23 and the baffle 21, that is, the convex rod 23 is inclined with respect to the baffle 21, and the convex rod 23 is located on the side of the baffle 21 away from the first surface 211. When the translation mechanism 5 slides from the sixth position to the fifth position, the convex rod 23 is more likely to abut against the support member 51 of the translation mechanism 5, which is convenient for the support member 51 of the translation mechanism 5 to apply a force to the convex rod 23 better, and is more conducive to the convex rod 23 rotating around the rotating shaft 22 to drive the baffle 21 of the rotating mechanism 2 to rotate around the rotating shaft 22 more smoothly, and the translation mechanism 5 drives the rotating mechanism 2 to reset from the second position to the first position more efficiently. Preferably, the included angle between the convex rod 23 and the baffle 21 can be set in the range of 15 - 30°, so as to more effectively improve the reset efficiency of the rotating mechanism 2.

[0126] In other embodiments, the side surface of one end of the rotating shaft 22 may not be provided with a groove 222, and one end of the convex rod 23 is directly connected to the end surface of the rotating shaft 22 near the translation mechanism 5 or connected to the outer side surface of the rotating shaft 22. The convex rod 23 of the rotating mechanism 2 is driven by the translation mechanism 5 to rotate, so as to drive the rotating mechanism 2 to reset from the second position to the first position.

[0127] See Figures 3 to 14 , specifically, the airway chamber 11 and the drug delivery chamber 12 are arranged at intervals along the first direction A1. Along the second direction A2, the first air flow channel Q1 and the rotating mechanism 2 are both arranged on one side of the airway chamber 11, and the dose protection mechanism 3 slides between the third position and the fourth position along the second direction A2. The axial direction of the rotating shaft 22 of the rotating mechanism 2 is the third direction A3, and along the third direction A3, the translation mechanism 5 is arranged on one side of the dose protection mechanism 3. Among them, the first direction A1, the second direction A2 and the third direction A3 are perpendicular to each other.

[0128] In some embodiments, before the breathing trigger device 100 is triggered, when the negative pressure in the airway chamber 11 is less than or equal to a preset threshold value, that is, before the first air flow channel Q1 is opened, the airway chamber 11 is also communicated with the external atmosphere through the third air flow channel Q3, so as to ensure the consistency of the suction resistance in the airway chamber 11 at each stage. Specifically, such as Figure 17As shown, a second communication hole 312 is further provided on the plate-like portion 31 of the dose protection mechanism 3. The second communication hole 312 and the first communication hole 311 are arranged at intervals. In a specific embodiment, the second communication hole 312 and the first communication hole 311 are arranged at intervals and in alignment in the second direction A2. The second communication hole 312 is part of the third air flow channel Q3. Before the breathing trigger device 100 is triggered, when the dose protection mechanism 3 is in the third position, the third air flow channel Q3 is opened, and the second communication hole 312 communicates the airway chamber 11 with the external atmosphere to balance the suction resistance in the airway chamber 11 and avoid the problem that inconsistent suction resistance in the airway chamber 11 affects the user experience. After the breathing trigger device 100 is triggered and the negative pressure in the airway chamber 11 is greater than the preset threshold, when the dose protection mechanism 3 is in the fourth position, that is, the second communication hole 312 is not communicated with the airway chamber 11, the third air flow channel Q3 is blocked, and the first air flow channel Q1 is opened, and the communication mode of the air flow channel of the dry powder inhaler 800 is changed. The airway chamber 11 is changed to communicate with the external atmosphere through the first air flow channel Q1. The airway chamber 11 communicates with the external atmosphere through different air flow channels at different times, which not only ensures the consistency of the suction resistance in the airway chamber 11 at each time, improves the user compliance, but also is more conducive to improving the powder disaggregation effect.

[0129] Specifically, referring to Figure 4A 、 Figure 4B 、 Figure 8A 、 Figure 8B and Figure 13 ,a third communication hole 14 is provided on the bracket 1. The third communication hole 14 and the airway chamber 11 are arranged at intervals. In a specific embodiment, along the second direction A2, the third communication hole 14 and the second powder discharging hole 111 are arranged at intervals. The third communication hole 14 is located on the side of the airway chamber 11 close to the rotating mechanism 2, and the third communication hole 14 communicates with the airway chamber 11 through the gap between the airway chamber 11 and the rotating mechanism 2. The second communication hole 312 is provided on the plate-like portion 31 of the dose protection mechanism 3. One end of the second communication hole 312 communicates with the external atmosphere. Specifically, one end of the second communication hole 312 communicates with the external gas entering the interior of the housing assembly 200.

[0130] Such as Figure 4A and Figure 4BAs shown, before the breathing trigger device 100 is triggered, the rotating mechanism 2 is in the first position and limits the dose protection mechanism 3 to the third position. The port of the first air flow channel Q1 is blocked, and the second communication hole 312 on the plate-shaped part 31 of the dose protection mechanism 3, the third communication hole 14 on the bracket 1, and the gap between the airway chamber 11 and the rotating mechanism 2 are sequentially communicated to form a third air flow channel Q3. Before the breathing trigger 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 and the third communication hole 14 on the bracket 1 are arranged in alignment and communicated with each other, that is, the third air flow channel Q3 is opened, so that the second communication hole 312 communicates the airway chamber 11 and the external atmosphere, and the airway chamber 11 communicates with the external atmosphere through the third air flow channel Q3 to balance the suction resistance in the airway chamber 11.

[0131] When the dose protection mechanism 3 moves along the second direction A2 to the fourth position, that is, after the breathing trigger device 100 is triggered, the second communication hole 312 and the third communication hole 14 on the bracket 1 are arranged out of alignment and cannot be communicated, so that the second communication hole 312 is not communicated with the airway chamber 11, and the plate-shaped part 31 of the dose protection mechanism 3 blocks the third communication hole 14 on the bracket 1, so that the third air flow channel Q3 is blocked, and the airway chamber 11 cannot communicate with the external atmosphere through the third air flow channel Q3. At this time, the rotating mechanism 2 has rotated and opened the port of the first air flow channel Q1, and the airway chamber 11 is changed to communicate with the outside atmosphere through the port of the first air flow channel Q1. At the same time, after the breathing trigger device 100 is triggered, the first powder discharge hole 121, the first communication hole 311, and the second powder discharge hole 111 are sequentially arranged in alignment and communicated, that is, the second air flow channel Q2 is opened, which is convenient for the user to inhale the medicine powder from the medicine accommodating part 62 in the medicine supply chamber 12 into the airway chamber 11 during the suction process, ensuring that the air flow velocity is large enough to better depolymerize the medicine 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 communicates the airway chamber 11 and the external atmosphere in other ways.

[0132] The settings of the breathing trigger device 100 are such that only when the flow rate of the user's suction airflow is sufficiently greater than the working threshold and the negative pressure in the airway chamber 11 is greater than the preset threshold, the breathing trigger device 100 will be triggered, and then the second airflow channel Q2 will be connected, and the powder in the medicine accommodating part 62 of the substrate tape 61 in the medicine supply chamber 12 will enter the airway chamber along with the airflow, be better depolymerized, so as to improve the utilization rate of the powder and the evacuation rate of the powder in the medicine accommodating part 62. At the same time, when the flow rate of the user's suction 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 breathing trigger device 100 will not be triggered, and the second airflow channel Q2 will be blocked by the plate-shaped part 31 of the dose protection mechanism 3. The powder in the medicine accommodating part 62 in the medicine supply chamber 12 will be blocked in the medicine supply chamber 12 by the plate-shaped part 31, and the powder will not enter the airway chamber 11, avoiding the problems of poor powder depolymerization effect and low powder utilization rate caused by insufficient user suction airflow. At the same time, the plate-shaped part 31 seals the powder in the medicine accommodating part 62, also avoiding problems such as powder contamination and powder leakage when the user does not suck or the suction airflow is insufficient.

[0133] In this application, before and after the breathing trigger device 100 is triggered, not only the positions and motion states of the rotating mechanism 2 and the dose protection mechanism 3 change, but also the connection mode of the airflow channels of the dry powder inhaler 800 changes. Specifically, when the negative pressure in the airway chamber 11 is less than or equal to the preset threshold, the third airflow channel Q3 is opened, the first airflow channel Q1 is blocked, and the third airflow channel Q3 connects the airway chamber 11 with the external atmosphere; when the negative pressure in the airway chamber 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 chamber 11 with the external atmosphere. By setting the breathing trigger device 100, different airflow channels of the dry powder inhaler 800 are connected.

[0134] Refer to Figures 19 to 24 , Figure 19 is a schematic structural diagram of an embodiment of the airway structure of the dry powder inhaler provided in this application, Figure 20 is Figure 19 a cross-sectional schematic diagram of the provided airway structure, Figure 21 is Figure 19 another cross-sectional schematic diagram of the provided airway structure, Figure 22 is Figure 19 a schematic structural diagram of the airway chamber of the provided airway structure, Figure 23 is Figure 19 a top-view structural schematic diagram of the manifold of the provided airway structure, Figure 24 is Figure 23 a bottom-view structural schematic diagram of the provided manifold.

[0135] See Figure 4A ,Figure 4B , Figure 6 , Figure 8A , Figure 8B , Figures 19 to 24 , in one embodiment, the dry powder inhaler 800 further includes an airway structure, which includes the above-mentioned airway chamber 11, the first air flow channel Q1, the third air flow channel Q3, the breathing trigger device 100, and the external air inlet 2011 provided on the housing 201. According to the magnitude of the negative pressure in the airway chamber 11 and a preset threshold, the state of the breathing trigger device 100 is determined, so that the dry powder inhaler 800 has different connection modes of the air flow channels in two different states before and after the breathing trigger device 100 is triggered, which not only ensures the consistency of the suction resistance in each stage, but also is more conducive to the disaggregation of the medicinal powder.

[0136] In other embodiments, other trigger mechanisms different from the breathing trigger device 100 may also be provided to realize the connection or switching of different air flow channels of the dry powder inhaler 800 through the actions of the trigger mechanisms, so that the dry powder inhaler 800 has different connection modes of the air flow channels in different states of the trigger mechanism, ensuring the consistency of the suction resistance of the dry powder inhaler 800 in each stage.

[0137] See Figures 11 to 14 , Figures 19 to 23 , the airway structure includes a bracket 1, and the bracket 1 has the above-mentioned airway chamber 11. Among them, the airway chamber 11 includes an annular side wall 112, a bottom wall 113, and a top wall 114. The bottom wall 113 of the airway chamber 11 has a second powder discharge hole 111. A first fin 115 and a second fin 116 are arranged in the airway chamber 11. The first fin 115 and the second fin 116 are spaced apart from each other. The first fin 115 and the annular side wall 112 cooperate to form a first airway part 117, the second fin 116 and the annular side wall 112 cooperate to form a second airway part 118, the first fin 115 and the second fin 116 cooperate to form a mixed airway part 119. The first airway part 117 and the second airway part 118 are both communicated with the mixed airway part 119, and the three together form a vortex airway 110. Specifically, a vortex is formed inside the mixed airway part 119, and the vortex airway 110 is spiral. The top wall 114 of the airway chamber 11 has air outlet holes 15 and air inlets spaced apart from each other. Specifically, the air inlets include 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 hole 15. Among them, the air outlet hole 15 is directly communicated with the mixed airway part 119, the first air inlet 16 communicates the external atmosphere and the first airway part 117, and the second air inlet 17 communicates the external atmosphere and the second airway part 118.

[0138] It can be understood that by arranging the airway structure as described above in the dry powder inhaler 800, the first fin 115 and the second fin 116 are arranged in the airway chamber 11 to form the first airway part 117, the second airway part 118 and the mixed airway part 119, and both the first airway part 117 and the second airway part 118 are communicated with the mixed airway part 119 to form a spiral vortex airway 110. There are two air inlets, namely the first air inlet 16 and the second air inlet 17, arranged on the top wall 114 of the airway chamber 11. The first air inlet 16 is communicated with the first airway part 117, and the second air inlet 17 is communicated with the second airway part 118. By arranging the two air inlets, when the user sucks from the position of the suction nozzle 202, the external air flow can enter the vortex airway 110 more efficiently from the top wall 114 of the airway chamber 11, which is more conducive to the deflocculation of the medicament powder entering the airway chamber 11. Moreover, both the first airway part 117 and the second airway part 118 are communicated with the mixed airway part 119 to form the vortex airway 110. When the user sucks, the gas entering the mixed airway part 119 from the first airway part 117 and the gas entering the mixed airway part 119 from the second airway part 118 form two tangential airflows. The two tangential airflows converge in the mixed airway part 119 to form a vortex, which is more conducive to the deflocculation of the medicament powder in the mixed airway part 119, and it is more convenient for the deflocculated medicament powder to be inhaled by the user through the air outlet 15 and the suction nozzle 202, improving the deflocculation effect of the medicament powder. The evacuation rate of the medicament powder in the mixed airway part 119 is higher under the action of the cyclone, reducing the adhesion of the medicament powder to the side wall and the bottom wall 113 of the mixed airway part 119, improving the utilization rate of the medicament powder during each suction, and reducing the waste of the medicament powder.

[0139] See Figure 22, in a specific embodiment, both the first fin 115 and the second fin 116 are arc-shaped, and the concave surfaces of the first fin 115 and the second fin 116 are arranged opposite to each other to cooperate to form a mixed airway portion 119. The convex surface of the first fin 115 faces the annular side wall 112 and is spaced apart from the annular side wall 112 to form a first airway portion 117, and the convex surface of the second fin 116 faces the annular side wall 112 and is spaced apart from the annular side wall 112 to form a second airway portion 118. Among them, the first air inlet 16 is arranged corresponding to the first airway portion 117, and the second air inlet 17 is arranged corresponding to the second airway portion 118. Specifically, the first air inlet 16 is arranged corresponding to one end of the first airway portion 117 away from the mixed airway portion 119, so that the gas entering the first airway portion 117 from the first air inlet 16 can flow through the entire first airway portion 117 and then enter the mixed airway portion 119. The second air inlet 17 is arranged corresponding to one end of the second airway portion 118 away from the mixed 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 and then enter the mixed airway portion 119, improving the flow rates of the two tangential airflows entering the mixed airway portion 119 from the first airway portion 117 and the second airway portion 118, and further improving the deflocculation effect of the powder and the discharge rate and utilization rate of the powder. The second powder discharge hole 111 is arranged corresponding to the center of the eddy current airway 110. Specifically, the second powder discharge hole 111 is arranged on the bottom wall 113 of the airway bin 11 corresponding to the center position of the mixed airway portion 119, so that the gas entering the eddy current airway 110 can further deflocculate the powder entering the mixed airway portion 119 from the second powder discharge hole 111 more evenly and efficiently.

[0140] Specifically, both the first fin 115 and the second fin 116 extend from the bottom wall 113 of the air duct chamber 11 to the top wall 114 of the air duct chamber 11. In a specific embodiment, along the first direction A1, the bottom ends of the first fin 115 and the second fin 116 are both connected to the bottom wall 113 of the air duct chamber 11, and the top ends are both in contact with the top wall 114 of the air duct chamber 11. The annular side wall 112 is in the shape of a rectangular ring. The annular side wall 112 includes a first side wall 1121 and a second side wall 1122 which are oppositely arranged, and a third side wall 1123 and a fourth side wall 1124 which are oppositely arranged. Along the extending 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 towards the fourth side wall 1124 and is spaced from the fourth side wall 1124. The first fin 115 and the first side wall 1121 and a part of the fourth side wall 1124 cooperate to form a first air duct portion 117. The first air duct portion 117 communicates with the mixed air duct 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 towards the third side wall 1123 and is spaced from the third side wall 1123. The second fin 116 and the second side wall 1122 and a part of the third side wall 1123 cooperate to form a second air duct portion 118. The second air duct portion 118 communicates with the mixed air duct portion 119 through the gap between the second fin 116 and the third side wall 1123, so that the second air duct portion 118 and the first air duct portion 117 enter the mixed air duct portion 119 from opposite positions, facilitating the formation of a cyclone airflow.

[0141] As Figure 19 and Figure 22 shown, in a specific embodiment, the first fin 115 and the second fin 116 are symmetrically arranged about the center, and the first air inlet 16 and the second air inlet 17 are symmetrically arranged about the center, which is more conducive to forming the eddy current air duct 110 and improving the depolymerization effect of the cyclone airflow on the powder.

[0142] In other embodiments, the first fin 115 and the second fin 116 can also be set to other shapes. For example, both the first fin 115 and the second fin 116 can be set to a folded surface. The concave surfaces of the first fin 115 and the second fin 116 are arranged opposite to each other to cooperate to form the mixed airway portion 119. The convex surface of the first fin 115 cooperates with the first side wall 1121 and a part of the fourth side wall 1124 to form the first airway portion 117. The convex surface of the second fin 116 cooperates with the second side wall 1122 and a part of the third side wall 1123 to form the second airway portion 118. The first airway portion 117 and the second airway portion 118 are both communicated with the mixed airway portion 119 to form the eddy current airway 110. The first fin 115 and the second fin 116 can 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 from both the third side wall 1123 and the fourth side wall 1124, and the second fin 116 is spaced from both the third side wall 1123 and the fourth side wall 1124. As long as the first airway portion 117 and the second airway portion 118 can be formed in cooperation with the annular side wall 112 of the airway chamber 11, and the two cooperate with each other to form the mixed airway portion 119 to form the eddy current airway 110, the present application does not limit this.

[0143] In a specific embodiment, referring to Figures 19 to 24 , the bracket 1 includes a bracket body 18 and a manifold 19. An air-gathering groove (not labeled in the figure) is provided on the surface of the bracket body 18 close to the nozzle 202. The side wall of the air-gathering groove serves as the annular side wall 112 of the airway chamber 11, and the bottom wall 113 of the air-gathering groove serves as the bottom wall 113 of the airway chamber 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. 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 provided on the manifold 19. The top ends of the first fin 115 and the second fin 116 both extend to contact with the manifold 19, so as to prevent the air flow entering the air-gathering groove from the first air inlet 16 and the second air inlet 17 from directly entering the mixed 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, which affects the formation of the cyclone-shaped air flow in the eddy current airway 110 and causes problems such as poor deflocculation effect of the powder in the mixed airway portion 119 and low powder evacuation rate.

[0144] Specifically, as Figure 23 and Figure 24As shown in the figure, the manifold 19 includes a connected embedded portion 191, a covering portion 192, and a communicating portion 193. The embedded portion 191 is located on the side of the covering portion 192 away from the communicating portion 193. Among them, the embedded portion 191 is spiral, and the embedded portion 191 is embedded in the eddy current air passage 110. The covering 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 arranged on the covering portion 192. The air outlet hole 15 sequentially penetrates through the communicating portion 193, the covering portion 192, and the embedded portion 191, and communicates with the mixing air passage portion 119.

[0145] Specifically, the covering portion 192 has a rectangular plate-like structure. The four side surfaces of the covering portion 192 are respectively in abutting contact with the four side walls of the air passage bin 11. The first air inlet 16 and the second air inlet 17 are notches provided on the covering portion 192. The first air inlet 16 is arranged on the surface of the covering portion 192 close to the first side wall 1121, and extends from the surface of the covering portion 192 close to the third side wall 1123 to the surface close to the fourth side wall 1124. Along the third direction A3, the first air inlet 16 is spaced from the fourth side wall 1124. The second air inlet 17 is arranged on the surface of the covering portion 192 close to the second side wall 1122, and extends from the surface of the covering portion 192 close to the fourth side wall 1124 to the surface close to the third side wall 1123. Along the third direction A3, the second air inlet 17 is spaced from the third side wall 1123. Preferably, the first air inlet 16 and the second air inlet 17 are arranged in central symmetry.

[0146] In other embodiments, the first air inlet 16 and the second air inlet 17 can also be any structures such as round holes and square holes provided on the covering portion 192. The shapes of the first air inlet 16 and the second air inlet 17 can be the same or different. The first air inlet 16 and the second air inlet 17 can also be arranged at other positions on the covering portion 192. The first air inlet 16 and the second air inlet 17 may not be arranged in central symmetry, as long as the first air inlet 16 can communicate with the first air passage portion 117 and the second air inlet 17 can communicate with the second air passage portion 118.

[0147] As Figure 23 As shown in the figure, the communicating portion 193 of the manifold 19 is in a circular tube shape. One end of the communicating portion 193 away from the embedded portion 191 is inserted into the nozzle 202, so that the nozzle 202 communicates with the mixing air passage portion 119 through the air outlet hole 15 of the manifold 19, thereby facilitating the user to inhale the powder in the mixing air passage portion 119 at the nozzle 202.

[0148] As Figure 24As shown, the embedding part 191 is spiral. Specifically, the embedding part 191 includes an annular embedding section 1911, and a first embedding section 1912 and a second embedding section 1913 that are connected to the annular embedding section 1911 and are spaced apart from each other. Preferably, both the first embedding section 1912 and the second embedding section 1913 are spaced from a partial outer side surface of the annular embedding section 1911. The first embedding section 1912 is arranged corresponding to the gap position between the first fin 115 and the fourth side wall 1124, and the second embedding section 1913 is arranged corresponding to the gap position between the second fin 116 and the third side wall 1123. The annular embedding section 1911 is embedded in the mixed air duct part 119, the first embedding section 1912 is embedded in the gap between the first fin 115 and the fourth side wall 1124, and the second embedding section 1913 is embedded in the gap between the second fin 116 and the third side wall 1123. One end of the first fin 115 close to the fourth side wall 1124 is embedded between the first embedding section 1912 and the annular embedding section 1911, and one end of the second fin 116 close to the third side wall 1123 is embedded between the second embedding section 1913 and the annular embedding section 1911, which is convenient for the more stable assembly and combination of the manifold 19 and the bracket body 18, and makes it easier to form a cyclone-shaped air flow in the eddy current air duct 110.

[0149] Preferably, as Figure 24 shown, the surfaces of the first embedding section 1912 and the second embedding section 1913 of the manifold 19 away from the covering part 192 are inclined surfaces. From the end connected to the annular embedding section 1911 to the end away from the annular embedding section 1911, the thicknesses of the first embedding section 1912 and the second embedding section 1913 in the first direction A1 gradually decrease. It can be understood that setting the surfaces of the first embedding section 1912 and the second embedding section 1913 away from the covering part 192 as inclined surfaces has a certain guiding effect on the air flow entering from the first air inlet 16 and the second air inlet 17. The inclined surfaces are more convenient for the formation of the cyclone-shaped air flow in the eddy current air duct 110, which is beneficial to improving the deflocculation effect of the pharmaceutical powder.

[0150] Specifically, the outer side surface of the first embedding section 1912 is a plane and abuts against the fourth side wall 1124, the inner side surface of the first embedding section 1912 is an arc surface and abuts against a partial outer side surface of the first fin 115. The outer side surface of the second embedding section 1913 is a plane and abuts against the third side wall 1123, and the inner side surface of the second embedding section 1913 is an arc surface and abuts against a partial outer side surface of the second fin 116. More preferably, as Figure 24As shown, 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 prevent the air flow entering the first airway section 117 from the first air inlet 16 from directly entering the mixing airway section 119 through the connection position between the second airway section 118 and the mixing airway section 119, or prevent the air flow entering the second airway section 118 from the first air inlet 16 from directly entering the mixing airway section 119 through the connection position between the second airway section 118 and the mixing airway section 119, which may affect the formation of the cyclone air flow and further affect the depolymerization effect of the medicament powder.

[0151] In other embodiments, the manifold 19 may also be integrally formed with the bracket body 18. Alternatively, the manifold 19 may not be provided, and the bracket body 18 itself forms the top wall 114 of the airway chamber 11. The tops of the first fin 115 and the second fin 116 may be directly connected to the top wall 114 of the airway chamber 11. An air outlet 15 is provided on the top wall 114 of the airway chamber 11 to communicate with the suction nozzle 202 and the mixing airway section 119. The first fin 115 and the second fin 116 may be integrally formed with the bracket 1.

[0152] The medicament storage chamber 12 is used to accommodate the medicament tape 6. Specifically, the medicament tape 6 includes a base tape 61 and a cover tape (not shown in the figure). The base tape 61 is provided with a medicament accommodating portion 62 for accommodating the powdery medicament. The cover tape is attached to one surface of the base tape 61 and covers the medicament accommodating portion 62. During use, the cover tape is peeled off from the base tape 61. The medicament storage chamber 12 is used to accommodate the base tape 61 after the cover tape is peeled off, so that the medicament accommodating portion 62 is exposed, thereby facilitating the user to inhale the medicament powder in the medicament accommodating portion 62.

[0153] In some embodiments, the airway structure further includes an intake passage Q4 independent of the swirl airway 110. The intake passage Q4 communicates with the outside atmosphere and the second powder discharge hole 111 in the bottom wall 113 of the airway chamber 11, and passes through the first powder discharge hole 121 in the top wall 114 of the medicine delivery chamber 12. Wherein, when the user sucks, the medicine containing portion 62 of the medicine strip 6 is delivered to a position corresponding to the first powder discharge hole 121 of the medicine delivery chamber 12, that is, the first powder discharge hole 121 communicates with the medicine containing portion 62. It can be understood that an intake passage Q4 independent of the swirl airway 110 is provided in the airway structure. The intake passage Q4 communicates with the outside atmosphere and must pass through the first powder discharge hole 121 in the top wall 114 of the medicine delivery chamber 12 and then communicate with the second powder discharge hole 111. During the user's sucking process, the intake passage Q4 can introduce external air flow to the position of the first powder discharge hole 121. The air flow can carry the medicine powder in the medicine containing portion 62 arranged opposite to the first powder discharge hole 121 into the second powder discharge hole 111, and then be inhaled by the user through the swirl airway 110 and the suction nozzle 202. That is, when the air flow passes through the first powder discharge hole 121, it has to flow above the medicine containing portion 62. The medicine powder in the medicine containing portion 62 is more likely to enter the swirl airway 110 under the carrying of the air flow, which is more convenient for the medicine powder to be discharged from the medicine containing portion 62, effectively solving the problem of incomplete discharge of the medicine powder and improving the utilization rate of the medicine powder.

[0154] In one embodiment, the top wall 114 of the medicine delivery chamber 12 further has a ventilation hole 122 spaced from the first powder discharge hole 121. The ventilation hole 122 is arranged in a staggered manner with the second powder discharge hole 111. The intake passage Q4 includes a ventilation hole 122, a medicine accommodating portion 62 inside the medicine delivery chamber 12, and a first powder discharge hole 121 that are connected in sequence. One end of the intake passage Q4 communicates with the external atmosphere, and the other end communicates with the second powder discharge hole 111. During the user's suction process, the intake passage Q4 flows through the ventilation hole 122, the medicine accommodating portion 62 inside the medicine delivery chamber 12, and the first powder discharge hole 121 in sequence and then reaches the second powder discharge hole 111. It can be understood that the gas entering the intake passage Q4 will flow through the ventilation hole 122 before flowing through the first powder discharge hole 121. Since the ventilation hole 122 is spaced from the first powder discharge hole 121, when the gas flows from the ventilation hole 122 to the second powder discharge hole 111, it will pass through the inside of the medicine delivery chamber 12. Specifically, during the user's suction process, the medicine accommodating portion 62 of the medicine strip 6 is delivered to a position corresponding to the ventilation hole 122 and the first powder discharge hole 121. The gas will flow above the medicine accommodating portion 62 inside the medicine delivery chamber 12 and then flow through the first powder discharge hole 121. The airflow flowing above the medicine accommodating portion 62 will carry the medicine powder in the medicine accommodating portion 62, enter the first powder discharge hole 121, and then flow through the eddy current airway 110 and be inhaled by the user at the suction nozzle 202. Compared with only sucking the medicine powder in the medicine accommodating portion 62 into the eddy current airway 110 through the second airflow passage Q2, setting a separate intake passage Q4 enables the airflow to flow through the inside of the medicine accommodating portion 62, which is more conducive to improving the evacuation rate and utilization rate of the medicine powder and avoiding the problem of waste caused by incomplete discharge of the medicine powder.

[0155] Specifically, as Figure 14 and Figure 21 shown, a third air inlet 10 is provided on the bracket 1. The third air inlet 10 is arranged corresponding to the position between the top wall 114 of the medicine delivery chamber 12 and the bottom wall 113 of the airway chamber 11. The third air inlet 10 communicates the external atmosphere and the ventilation hole 122. Both the ventilation hole 122 and the first powder discharge hole 121 are used to communicate with the medicine accommodating portion 62 of the medicine strip 6 during the user's suction, so that the third air inlet 10, the ventilation hole 122, the medicine accommodating portion 62, and the first powder discharge hole 121 are connected in sequence to form the intake passage Q4. That is, the third air inlet 10 is the port of the intake passage Q4, and the external gas enters the intake passage Q4 through the third air inlet 10.

[0156] In a specific embodiment, during the user's suction process, the medicine accommodating portion 62 is delivered to a position corresponding to the ventilation hole 122 and the first powder discharge hole 121. Preferably, in the third direction A3, the first powder discharge hole 121 and the ventilation hole 122 are arranged in a spaced and aligned manner. Specifically, as Figure 20 and Figure 21As shown, the first row of powder holes 121 and the ventilation holes 122 are both round holes. The diameter of the first row of powder holes 121 is equal to the diameter of the ventilation holes 122, and the first row of powder holes 121 and the ventilation holes 122 are completely aligned in the third direction A3. In the second direction A2, the width of the medicament accommodating portion 62 is equal to the diameter of the first row of powder holes 121 and the ventilation holes 122. The length of the medicament 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 medicament accommodating portion 62 exactly completely covers the first row of powder holes 121 and the ventilation holes 122. That is, in the third direction A3, one end of the medicament accommodating portion 62 corresponds to the hole wall of the first row of powder holes 121 far from the ventilation holes 122, and the other end corresponds to the hole wall of the ventilation holes 122 far from the first row of powder holes 121. The medicament accommodating portion 62 is completely aligned with the first row of powder holes 121 and the ventilation holes 122. When the gas flows through the ventilation holes 122 and the first row of powder holes 121, it can completely flow above the entire medicament accommodating portion 62, which is convenient for more smoothly and efficiently carrying the powder in the medicament accommodating portion 62 into the eddy current air passage 110, ensuring that the powder at each position in the medicament accommodating portion 62 can be discharged from the medicament accommodating portion 62, more effectively improving the evacuation rate of the powder, thereby improving the utilization rate of the powder, solving the problem of incomplete powder discharge, and avoiding waste.

[0157] In other embodiments, the first powder discharge holes 121 and the ventilation holes 122 can also be set as rectangular holes, elliptical holes, diamond-shaped holes, triangular holes or any other regular or irregular shapes. The shapes of the first powder discharge holes 121 and the ventilation holes 122 can be the same or different; the first powder discharge holes 121 and the ventilation holes 122 can be arranged without complete alignment. For example, the diameters of the first powder discharge holes 121 and the ventilation holes 122 are equal, and in the third direction A3, only a part of the first powder discharge holes 121 and the ventilation holes 122 are aligned, and the other part is arranged in a staggered manner. Or, the diameters of the first powder discharge holes 121 and the ventilation holes 122 are not equal, so that the first powder discharge holes 121 and the ventilation holes 122 are partially aligned; in the second direction A2, the width of the medicine containing part 62 can also be greater than or less than the diameter of the first powder discharge holes 121 or the ventilation holes 122, and in the third direction A3, the length of the medicine containing part 62 can also be less than or greater than the dimension from one end of the first powder discharge holes 121 away from the ventilation holes 122 to the other end of the ventilation holes 122 away from the first powder discharge holes 121, that is, the medicine containing part 62 and the first powder discharge holes 121 and the ventilation holes 122 can also be arranged without complete alignment, that is, they can be partially arranged in a staggered manner; the first powder discharge holes 121 and the ventilation holes 122 can also be arranged at intervals along other directions, and the first powder discharge holes 121 and the ventilation holes 122 can also be arranged in a staggered manner, as long as both the first powder discharge holes 121 and the ventilation holes 122 can communicate with the medicine containing part 62, and the air flow can flow over the medicine containing part 62 when flowing from the ventilation holes 122 to the first powder discharge holes 121. The present application does not limit this. The third air inlet 10 may not be arranged corresponding to the gap position between the top wall 114 of the medicine delivery bin 12 and the bottom wall 113 of the air duct bin 11, and can be arranged at any position of the bracket 1, as long as the third air inlet 10 can communicate the external atmosphere and the ventilation holes 122.

[0158] Further, in some embodiments, since part of the dose protection mechanism 3 is movably disposed in the gap between the drug delivery chamber 12 and the airway chamber 11 and can move along the second direction A2 between the third position and the fourth position, a first communication hole 311 is provided on the dose protection mechanism 3. When the dose protection mechanism 3 is in the third position, the first communication hole 311 is misaligned with the first powder discharge hole 121, and the dose protection mechanism 3 blocks the first powder discharge hole 121. At this time, the intake air passage Q4 is not communicated with the second powder discharge hole 111, which can prevent the powder from entering the eddy current airway 110 from the first powder discharge hole 121 and causing waste when the user does not suck or the suction air flow is insufficient. When the dose protection mechanism 3 is in the fourth position, the first communication hole 311 is located between the first powder discharge hole 121 and the second powder discharge hole 111, and the first powder discharge hole 121, the first communication hole 311, and the second powder discharge hole 111 are sequentially aligned and communicated to form a second air flow passage Q2. At this time, the dose protection mechanism 3 does not block the intake air passage Q4, and the third intake port 10 is communicated with the ventilation hole 122, so that external gas can sequentially pass through the third intake port 10, the ventilation hole 122, the inside of the medicine containing portion 62, the first powder discharge hole 121, and the first communication hole 311 and then enter the second powder discharge hole 111, so that the intake air passage Q4 is communicated with the second powder discharge hole 111. The first powder discharge hole 121 and the first communication hole 311 are both part of the second air flow passage Q2 and part of the intake air passage Q4. By the magnitude relationship between the user's suction negative pressure value and the preset threshold, the rotation mechanism 2 is determined to rotate between the first position and the second position, and further the movement of the dose protection mechanism 3 between the third position and the fourth position in the second direction A2 is controlled, so as to realize the blocking and communication of the second air flow passage Q2 and the intake air passage Q4, which is beneficial to improving the powder depolymerization effect and the powder evacuation rate at the same time.

[0159] Further, in some embodiments, the dose protection mechanism 3 further has a missing hole 34. When the dose protection mechanism 3 is in the third position, the missing hole 34 is misaligned with the ventilation hole 122 and / or the third intake port 10, and the dose protection mechanism 3 blocks the ventilation hole 122 and / or the third intake port 10, so that the intake air passage Q4 is not communicated with the second powder discharge hole 111.

[0160] Such as Figure 5 、 Figure 9A 、 Figure 9B and Figure 17As shown, in a specific embodiment, the missing hole 34 is provided in the plate-shaped portion 31 of the dose protection mechanism 3, and the missing hole 34 and the first communication hole 311 are arranged at intervals and in alignment in the third direction A3. Specifically, the missing hole 34 is a rectangular notch, and the first communication hole 311 is a circular hole. In the second direction A2, the size of the missing hole 34 is equal to the aperture of the first communication hole 311, and the first communication hole 311 and the missing hole 34 are completely aligned in the third direction A3. In the third direction A3, the length of the missing hole 34 is greater than the aperture of the ventilation hole 122. In the second direction A2, the width of the missing hole 34 is equal to the aperture of the ventilation hole 122.

[0161] When the user's suction air flow 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 communication hole 311 is completely misaligned with the first powder discharge hole 121 and the second powder discharge hole 111. The plate-shaped portion 31 blocks the first powder discharge hole 121, and the second air flow channel Q2 is not connected. At the same time, the missing hole 34 is also completely misaligned with the ventilation hole 122 and the third air inlet 10, and the missing hole 34 is not connected to the ventilation hole 122 and the third air inlet 10, so that the intake air channel Q4 is not connected. At this time, the powder in the medicine containing portion 62 will not enter the eddy current airway 110 through the second powder discharge hole 111, avoiding powder waste.

[0162] When the user's suction air flow is sufficient, the negative pressure in the airway chamber 11 is greater than the preset threshold, and the dose protection mechanism 3 is in the fourth position, the missing hole 34 moves to a position corresponding to the ventilation hole 122 and is connected to the ventilation hole 122. Specifically, in the first direction A1, the missing hole 34 is arranged in alignment with the ventilation hole 122, and the projection of the ventilation hole 122 is completely within the projection range of the missing hole 34, and the missing hole 34 is connected to the ventilation hole 122 in alignment. In the third direction A3, the third air inlet 10 is connected to the missing hole 34 in alignment. Among them, the third air inlet 10 is located on the side of the missing hole 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 missing hole 34, and along the first direction A1, the height of the third air inlet 10 is equal to the height of the missing hole 34, that is, the thickness of the plate-shaped portion 31, so that the gas entering the intake air channel Q4 through the third air inlet 10 can completely flow through the missing hole 34 and the ventilation hole 122 and then enter above the medicine containing portion 62 to carry the powder into the second powder discharge hole 111, improving the powder evacuation rate and the intake air efficiency, and being beneficial to improving the powder deflocculation effect.

[0163] In other embodiments, the missing hole 34 can also be set to any other shape such as circular, semi-circular, diamond-shaped, etc. In the second direction A2, the size of the missing hole 34 can also be not equal to the aperture of the first communication hole 311. The first communication hole 311 and the missing hole 34 can be only partially aligned in the third direction A3; alternatively, the missing hole 34 and the first communication hole 311 can also be spaced apart in other directions; in the second direction A2, the width of the missing hole 34 can also be not equal to the aperture of the ventilation hole 122, and the width of the third air inlet 10 can also be not equal to the aperture of the ventilation hole 122. When the dose protection mechanism 3 is in the third position, the first communication hole 311 is aligned and communicated with the second powder discharge hole 111 and the first powder discharge hole 121. The missing hole 34 can be only misaligned with the third air inlet 10, and be partially or completely aligned with the ventilation hole 122, that is, the missing hole 34 is communicated with the ventilation hole 122 and is only not communicated with the third air inlet 10, so that when the dose protection mechanism 3 is in the third position, the air inlet passage Q4 is not communicated, and external air flow cannot flow through the third air inlet 10, then through the air inlet passage Q4 and then enter the second powder discharge hole 111; or, when the dose protection mechanism 3 is in the third position, the missing hole 34 can be only misaligned with the ventilation hole 122, and be partially or completely aligned with the third air inlet 10, so that the air inlet passage Q4 is not communicated. When the dose protection mechanism 3 is in the fourth position, the missing hole 34 can be partially aligned with the third air inlet 10 and / or the ventilation hole 122, so that the air inlet passage Q4 is communicated with the second powder discharge hole 111.

[0164] In other embodiments, in the dose protection mechanism 3 of the airway structure, only the first communication hole 311 can be provided without providing the missing hole 34, or only the missing hole 34 can be provided without providing the first communication hole 311. The connection and blockage between the air inlet passage Q4 and the second powder discharge hole 111 are controlled by the movement of the dose protection mechanism 3 between the third position and the fourth position, so as to reduce powder waste while improving the powder evacuation rate.

[0165] In some embodiments, further referring to Figure 2 and Figure 4A 、 Figure 4B ,the dry powder inhaler 800 further includes a 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 installed on the bracket 1.

[0166] Among them, the unwinding wheel 400 is used for unwinding the medicine tape 6. The unwinding wheel 400 includes a medicine tape mounting shaft 401, and the medicine tape mounting shaft 401 is used for mounting the medicine tape 6. Along the length direction of the medicine tape 6, at one end of the medicine tape 6, the substrate tape 61 and the cover tape are in a peeled state. The cover tape winding wheel 500 is used for peeling the cover tape from the substrate tape 61 to expose the medicine accommodating portion 62 on the substrate tape 61, and for winding up the cover tape peeled from the substrate tape 61. The medicine delivery wheel 600 is arranged in the medicine delivery bin 12. The medicine delivery wheel 600 is used for delivering the substrate tape 61 after the cover tape is peeled off by the cover tape winding wheel 500, so as to deliver the medicine accommodating portion 62 to a position corresponding to the first powder discharge hole 121, facilitating the powder in the medicine accommodating portion 62 to be discharged through the first powder discharge hole 121 when the user sucks. The substrate tape winding wheel 700 is used for winding up the substrate tape 61 after the cover tape is peeled off by the cover tape winding wheel 500 and the powder in the medicine accommodating portion 62 is sucked by the user.

[0167] A medicine tape accommodating groove 7 is further arranged on the bracket 1. At least the unwinding wheel 400 is located in the medicine tape accommodating groove 7. The medicine tape accommodating groove 7 is at least used for accommodating the wound medicine tape 6 mounted on the medicine tape mounting shaft 401. As Figure 2 、 Figure 12 and Figure 13 shown, in an embodiment, both the unwinding wheel 400 and the substrate tape winding wheel 700 are located in the medicine tape accommodating groove 7, and they are arranged at intervals and do not interfere with each other. In other embodiments, if the space of the medicine tape accommodating groove 7 is large enough, the unwinding wheel 400, the substrate tape winding wheel 700 and the cover tape winding wheel 500 can all be arranged in the medicine tape accommodating groove 7, and can be designed according to needs.

[0168] The medicine tape 6 includes a substrate tape 61 and a cover tape (not shown in the figure). A medicine accommodating portion 62 (i.e., a medicine sac) for accommodating powdery medicine is arranged on the substrate tape 61. The cover tape is attached to one surface of the substrate tape 61 and seals the medicine accommodating portion 62, and the cover tape is peeled off from the substrate tape 61 during use. The medicine delivery wheel 600 is accommodated in the medicine delivery bin 12. The outer side surface of the medicine delivery wheel 600 has a plurality of medicine delivery grooves (not marked in the figure). The substrate tape 61 after the cover tape is peeled off is wound around the medicine delivery wheel 600, so that the medicine accommodating portion 62 is located in the medicine delivery groove and the top of the medicine accommodating portion 62 is exposed, making the medicine accommodating portion 62 a part of the air inlet channel Q4, thereby facilitating the user to suck the powder in the medicine accommodating portion 62.

[0169] The unwinding reel 400, the cover sheet winding reel 500, the drug delivery wheel 600, and the substrate winding reel 700 can all be provided with gears. The gears can be used to form a gear set for transmission, so as to realize their respective functions. In one embodiment, the rotation center of the cover 300 can be linked to the gear set. By rotating the cover 300 between the seventh position and the eighth position, the gear set is driven to move, so that the unwinding reel 400, the cover sheet winding reel 500, the drug delivery wheel 600, and the substrate winding reel 700 realize their functions. At the same time, the limit on the translation mechanism 5 of the breathing trigger device 100 can also be released to facilitate the subsequent breathing trigger process. That is, during the process of the cover 300 rotating from the seventh position to the eighth position (i.e., the opening process), the linkage between multiple sub-modules is realized. Through one opening operation, the linkage actions of related modules can be realized, which simplifies the operation of the user and improves the user compliance.

[0170] Specifically, the dry powder inhaler 800 can include a ratchet (not shown in the figure) and a ratchet gear (not shown in the figure). Multiple pawls are provided on both the ratchet and the ratchet gear and are assembled and connected. The ratchet gear is in gear connection with the above-mentioned gear set, and the rotation center of the cover 300 is connected to the center of the ratchet. When the cover 300 rotates from the seventh position to the eighth position, since the ratchet and the ratchet gear are connected by pawls, the cover 300 drives the ratchet to rotate synchronously with the ratchet gear, and then the ratchet gear drives the gear set to rotate, so that the above-mentioned multiple sub-modules realize their functions. During the process of the cover 300 rotating from the eighth position to the seventh position, due to the pawls provided on the ratchet and the ratchet gear, the cover 300 only drives the ratchet connected thereto to rotate in the reverse direction, and the ratchet gear does not rotate, so that the gear sets of the unwinding reel 400, the cover sheet winding reel 500, the drug delivery wheel 600, and the substrate winding reel 700 do not rotate either, avoiding the loose winding or insufficient winding of the drug tape, the substrate tape, or the cover sheet tape.

[0171] In other embodiments, a separate driving member can also be provided to drive the gear set to move, so that each component realizes its function. Among them, the gears in the unwinding reel 400, the cover sheet winding reel 500, the drug delivery wheel 600, and the substrate winding reel 700 can rotate synchronously or non-synchronously, which can be designed according to needs.

[0172] Refer to Figures 26 to 31 , Figure 26 is a schematic structural diagram of an embodiment of the winding device provided by the present application, Figure 27 is Figure 26 a cross-sectional schematic diagram of the winding device provided by Figure 28 is Figure 26 a schematic structural diagram of the winding rod of the winding device provided by Figure 29 is Figure 26 a top view structural schematic diagram of the winding gear of the winding device provided by Figure 30 isFigure 29 An upward view structural schematic diagram of the tape winding gear provided Figure 31 is Figure 25 A structural schematic diagram of the wave washer of the winding device provided

[0173] Refer to Figure 26 and Figure 27 In this application, a winding device 900 is also provided. At least one of the cover sheet winding wheel 500 and the substrate winding wheel 700 of the dry powder inhaler 800 can be the winding device 900 as described above. The winding device 900 includes a tape winding rod 91, a tape winding gear 92, and a washer 93. The tape winding 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 and arranged on the outer side surface of the rod-shaped portion 911. The rod-shaped portion 911 is used for winding the tape. Among them, the tape can be a substrate tape 61 or a cover sheet tape. The tape winding gear 92 has a central hole 921. The tape winding gear 92 is sleeved on the outer side surface of the rod-shaped portion 911 and is located between the first clamping portion 912 and the second clamping portion 913. That is, the first clamping portion 912 and the second clamping portion 913 limit the tape winding gear 92. The inner wall of the central hole 921 is attached to the outer side surface of the rod-shaped portion 911. The surface of the tape winding gear 92 close to the first clamping portion 912 is in contact with the first clamping portion 912. The washer 93 is installed between the tape winding gear 92 and the second clamping portion 913 and is in contact with the tape winding gear 92 and the second clamping portion 913 respectively.

[0174] It can be understood that the tape winding gear 92 is limited and installed on the tape winding rod 91 through the first clamping part 912 and the second clamping part 913. The structures of the tape winding gear 92 and the tape winding rod 91 are relatively simple and small in size. The diameter of the tape winding rod 91 is smaller than that of the tape winding gear 92, and more tape can be wound, effectively saving space and simplifying the structure of the winding device 900. It can be applied to small-space structures and has a wider application range. Moreover, the inner wall of the central hole 921 of the tape winding gear 92 is attached to the outer side surface of the rod-shaped part 911, and the surface of the tape winding gear 92 close to the first clamping part 912 is in contact with the first clamping part 912, so that the contact area between the tape winding gear 92 and the tape winding rod 91 is larger and the friction force is greater, which is more conducive to driving the tape winding rod 91 to rotate by the tape winding gear 92 to wind the tape. When the load of the tape winding rod 91 is too large, the tape winding gear 92 can also slide relative to the tape winding rod 91. Among them, the tape winding gear 92 is still rotating, and the tape winding rod 91 can stop rotating, or can also rotate at a speed lower than the rotation speed of the tape winding gear 92, so that the tape winding gear 92 can slide relative to the tape winding rod 91, thereby effectively reducing the load of the tape winding rod 91 through the sliding friction force between the two, achieving the effect of tape winding compensation, and avoiding problems such as the tape winding rod 91 still winding the tape when the load of the tape winding rod 91 is too large, resulting in the tape being wound too tightly on the tape winding rod 91 and the tape breaking. 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 and continue to wind the tape.

[0175] As Figure 26 and Figure 27 shown, in an embodiment, the washer 93 includes a rigid washer 931 and an elastic washer 932. The elastic washer 932 is located between the tape winding gear 92 and the rigid washer 931, and the elastic washer 932 is in contact with the tape winding gear 92 and the rigid washer 931 respectively. In a specific embodiment, the rigid washer 931 is a flat washer, and the elastic washer 932 is a corrugated washer. It can be understood that by setting the rigid washer 931 and the elastic washer 932 at the same time, during the assembly process, the elastic washer 932 can press the tape winding gear 92, making the contact between the tape winding gear 92 and the tape winding rod 91 closer, which is more conducive to driving the tape winding rod 91 to rotate synchronously by the rotation of the tape winding gear 92 to wind the tape. Setting the rigid washer 931 can also make the assembly stability of the winding device 900 higher. The elastic washer 932 is in contact with the rigid washer 931, and can also reduce the energy loss of the entire winding device 900 during the movement of the tape winding gear 92.

[0176] Specifically, the side of the corrugated washer facing the tape winding gear 92 is provided with wave crests, as Figure 29As shown in the figure, a limiting groove 922 is provided on the surface of the tape winding gear 92 close to the corrugated washer corresponding to the wave crest, and the wave crest is correspondingly arranged in the limiting groove 922, so that the tape winding gear 92 rotates synchronously with the corrugated washer, thereby avoiding relative sliding between the tape winding gear 92 and the corrugated washer, and preventing the problem of energy loss of the winding device 900 caused by the sliding friction between the two.

[0177] See Figure 26 、 Figure 27 and Figure 30 , a receiving groove 923 is provided on the surface of the tape winding gear 92 on the side away from the washer 93, the central hole 921 is provided on the bottom wall 113 of the receiving groove 923, and the first clamping portion 912 is embedded in the receiving groove 923. Specifically, the surface of the first clamping portion 912 close to the second clamping portion 913 is attached to the bottom surface of the receiving groove 923, and / or the side surface of the first clamping portion 912 is attached to the side surface of the receiving groove 923. Preferably, the surface of the first clamping portion 912 close to the second clamping portion 913 is attached to the bottom surface of the receiving groove 923, and the side surface of the first clamping portion 912 is attached to the side surface of the receiving groove 923. It can be understood that the above implementation can make the contact area between the tape winding gear 92 and the tape winding rod 91 larger and the static friction stronger, which is more conducive to the tape winding gear 92 driving the tape winding rod 91 to rotate synchronously; it can also, when the load of the tape winding rod 91 is too large, through the misalignment movement of the tape winding rod 91 and the tape winding gear 92, more quickly reduce the load of the tape winding rod 91, and more efficiently achieve the function of tape winding compensation, avoiding the problem of tape damage caused by over-tight winding.

[0178] See Figure 26 、 Figure 27 and Figure 28 , the rod-shaped portion 911 of the tape 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. The second clamping portion 913 is provided at one end of the second rod segment 915 away from the first clamping portion 912. The first rod segment 914 is used for winding the tape, and the tape winding gear 92 and the washer 93 are sleeved on the second rod segment 915.

[0179] In a specific embodiment, the rod-shaped portion 911 is cylindrical, the first clamping portion 912 is annular, the central 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 an inclined surface. The inclined surface is arranged obliquely to the axis of the rod-shaped portion 911, and 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, the diameter of the second clamping portion 913 gradually increases, and the diameter of the end of the second clamping portion 913 close to 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 more convenient to assemble the washer 93 and the tape winding gear 92 onto the tape winding rod 91, improving the assembly efficiency. And the diameter of the end of the second clamping portion 913 close to the first clamping portion 912 is smaller than the diameter of the first clamping portion 912, which can prevent the central hole 921 of the tape winding gear 92 from passing through the first clamping portion 912 and being unable to be limited between the first clamping portion 912 and the second clamping portion 913.

[0180] Among them, the first rod segment 914 is a hollow cylinder, and at least one first clamping groove 916 is provided on the side wall of the first rod segment 914. The first clamping groove 916 extends along the axial direction of the rod-shaped portion 911. As Figure 28 shown, in a specific embodiment, two first clamping grooves 916 are provided on the side wall of the first rod segment 914. The first clamping grooves 916 are used for the end of the tape to pass through them, so as to facilitate the first rod segment 914 to wind the tape. And / or, the second rod segment 915 is a hollow cylinder, and at least one second clamping groove 917 is provided on the side wall of the second rod segment 915. As Figure 28 shown, in a specific embodiment, two second clamping grooves 917 are provided on the side wall of the second rod segment 915. The second clamping grooves 917 extend from the end of the second rod segment 915 away from the first rod segment 914 to the first clamping portion 912. During the assembly process of the winding device 900, the second clamping grooves 917 can facilitate the inward contraction of the second rod segment 915, so that the tape winding gear 92 and the washer 93 can be more smoothly assembled from one end of the second clamping portion 913 between the second clamping portion 913 and the first clamping portion 912, improving the assembly efficiency, and returning to its original state after assembly, facilitating the limitation of the tape winding gear 92 and the washer 93.

[0181] The above are only the embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A rotating mechanism is applied to a breath-triggering device, characterized in that Comprising: A rotating shaft with a notch on its outer surface; A baffle plate 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 breathing trigger device; when moving from the first position to the second position, the baffle plate rotates around the rotating shaft to open the first air flow channel.

2. The rotating mechanism according to claim 1, characterized in that, 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 forms an included angle with the baffle plate.

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

4. The rotating mechanism according to claim 3, characterized in that, A chamfer is arranged at one end of the flange far from the rotating shaft.

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

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

7. The dose protection mechanism according to claim 6, characterized in that, The dose protection mechanism further includes a main body portion, and a limiting member is arranged on the main body portion.

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 portion, and the convex column has a free end.

9. The dose protection mechanism according to claim 7, characterized in that, 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; The main body portion is further provided with a receiving groove.

10. A respiratory triggering device, characterized in that, Comprising: An airway chamber; A rotating mechanism that can rotate between a first position and a second position; A dose protection mechanism that can move between a third position and a fourth position; Wherein, when the negative pressure in the airway chamber of the breathing 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 breathing trigger device is greater than a preset threshold value, the rotating mechanism and the dose protection mechanism move so that the connection mode of the air flow channel of the breathing trigger device changes.

11. The breathing trigger device according to claim 1, characterized in that 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 a counterpoint manner 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 and the third communication hole are aligned and communicated 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 aligned and communicated to form the second air flow channel.

14. The breathing trigger device according to claim 12, characterized in that, 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, the translation mechanism moves from the sixth position to the fifth position, driving the dose protection mechanism to reset from the fourth position to the third position and driving the rotation mechanism to reset from the second position to the first position.

15. The respiratory triggering device according to claim 14, characterized in that, 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 translation 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 translation mechanism moves from the sixth position to the fifth position, the support member pushes the convex rod so that the rotation 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 rotation 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, characterized in that, Comprising: A housing assembly, including a housing and a mouthpiece; A breathing trigger device, arranged in the housing, and the breathing trigger device is the breathing trigger 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 breathing trigger device is the breathing trigger 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 translation 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 rotation mechanism to the first position through the translation mechanism; when the cover body is in the eighth position, it exposes the mouthpiece and releases the limit on the translation mechanism.

19. The dry powder inhaler according to claim 18, wherein The cover body is connected to the translation mechanism, and by rotating the cover body between the seventh position and the eighth position, it drives the translation mechanism to slide between the fifth position and the sixth position; or, The bracket is further provided with an elastic arm, 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, When the rotation mechanism rotates from the first position to the second position, it drives the translation 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 translation mechanism to slide from the fifth position to the sixth position.

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