CN117205411A

CN117205411A - Dry powder inhalation assembly

Info

Publication number: CN117205411A
Application number: CN202311058188.0A
Authority: CN
Inventors: 任瑞贤; 王敏
Original assignee: Suzhou Singmed Medical Device Science And Technology Ltd
Current assignee: Suzhou Singmed Medical Device Science And Technology Ltd
Priority date: 2017-04-17
Filing date: 2017-04-17
Publication date: 2023-12-12
Also published as: CN106924845A

Abstract

The application discloses a dry powder inhalation assembly, which comprises a bearing plate, a suction nozzle and a capsule chamber, wherein a through hole is formed in the bearing plate in a penetrating way; the suction nozzle is connected above the bearing plate and is positioned at the through hole; the capsule chamber is connected below the bearing plate and is positioned at the through hole; the lower surface of the bearing plate is provided with a ventilation slit extending into the through hole; or, an air inlet groove extending downwards is formed in the upper hole edge of the through hole on the bearing plate; or, the upper surface of the bearing plate is provided with an air inlet hole which extends downwards to the inner wall of the through hole in an inclined way. The dry powder inhalation assembly can interact with main air flow entering the capsule chamber to form turbulence through the design of the ventilation slit, the air inlet groove or the air inlet hole, so that powder medicine can be fully dispersed under the drive of turbulent air and sequentially enter a user body through the screen and the suction nozzle, and the powder medicine can be smoothly sucked out by the user.

Description

Dry powder inhalation assembly

The application is a divisional application of Chinese patent application CN201710249570.8 with the name of "a dry powder absorber" submitted in 2017, 4 and 17 days.

Technical Field

The present application relates to a dry powder inhaler for delivering a powdered medicament, in particular for the treatment of respiratory diseases such as asthma and chronic obstructive pulmonary disease.

Background

There are various different kinds of powder medicine inhalers known in the art of powder medicine inhalers. Existing powder drug inhalers can be divided into three general categories:

first category: the powder medicine inhaler of the reservoir type, which has a reservoir for storing a dose of powder therein, has a member for metering the dose of powder to be separated from the reservoir at each braking, and the separated powder is sucked into a patient through an exhaust pipe. Disadvantages of such powder inhalants: 1. the amount of powder delivered per time is unstable; 2. the powder medicine inhalators have poor sealing performance, so that the powder is easy to wet in a more humid environment, and the expected effect is affected; 3. during the separation of the powder in the reservoir, a portion of the powder remains inside the powder inhaler, which can contaminate the powder inhaler and cause some harm to the user.

The second category: the powder is stored in the bubble cap on the bubble cap belt independently in advance, the bubble caps are evenly distributed on the bubble cap belt, and the bubble cap belt is mounted on the rotating disc inside the powder medicine inhaler; one blister is opened every time the powder drug inhaler is actuated, and powder is inhaled into the patient through the discharge tube. The powder medicine inhaler ensures the tightness of the powder better; the defects are that: 1. poor reproducibility, differences in front and back delivery of the same powder drug inhaler to the patient; 2. the powder medicine inhaler has residual medicine powder, which can pollute the powder medicine inhaler and cause a certain harm to users; 3. there is powder residue in the blister, rendering the properties of the powder less than desired.

Third category: in a single dose powder medicine inhaler, powder is stored in a single capsule independently in advance, the capsules are distributed on a capsule plate, a patient firstly takes out the capsules from the capsule plate when using the powder medicine inhaler, then puts the taken-out capsules into a capsule chamber of the powder medicine inhaler, the capsules are pierced by pressing a button, and the powder is sucked into the patient through a discharge pipe. Disadvantages of existing such products: 1. the existing powder medicine inhaler has poor reliability; for example: (1) in the puncturing process, the puncturing component is separated from the button component; (2) the button can not be normally pressed and started, so that the powder medicine inhaler can not be normally used; 2. the powder medicine inhaler cannot be cleaned sufficiently, and is easy to cause pollution; 3. the use is not humanized and the use is not convenient enough; the assembly process is complex, the reject ratio is high, and the manufacturing cost is high.

More specifically, existing powder drug inhalers suffer from the following drawbacks:

1. and an additional main shaft is adopted, so that a part of product cost is increased. The assembly is cumbersome and the spindle is not necessary at all from an economical point of view.

2. The adoption of a pair of transparent windows, the actual size of the windows is limited by the strength of the parts, the windows cannot be made large, and the windows are not suitable for patients to observe the internal conditions, so that the patients are likely to misjudge the internal conditions, and when the patients take medicines in later stages, additional medicines are inhaled, and even dirt is caused. The rib position connected between the two windows is extremely fine, so that the injection molding is inconvenient (the injection molding cost is relatively high).

3. And 3 small holes around the capsule chamber and on the bottom plate are communicated with the cavity of the lower shell and then communicated with the atmosphere. The main air flow of the capsule chamber is communicated to the lower shell cavity first and then is communicated with the atmosphere, so that whether the air flow in the lower shell cavity is clean or not can have influence on the clean conditions of the two air flows.

4. In the prior art, the capsule chamber is provided with two tips which can move oppositely to the spring to push the button, the button is arranged on the capsule chamber and inconvenient, the pair of tips are directly embedded into the button, the button is directly arranged on the capsule chamber and inconvenient, no good quality management condition is obtained, and the condition of falling can occur.

5. Holes smaller than 1mm are formed in the bottom plate, edges of the holes are close to the capsule chamber, the parts are weak in structure, products are easy to damage, and the die is easy to damage.

6. The reduced width of the slot formed in the floor adjacent the spindle results in a relatively weaker floor on the side of the spindle.

Disclosure of Invention

The application aims at: in order to solve the problems, a dry powder inhaler with a more ingenious structure is provided.

The application adopts the following technical scheme:

a dry powder inhalation assembly comprising:

the bearing plate is provided with a through hole in a penetrating way;

a suction nozzle connected to the upper side of the bearing plate and located at the through hole; and

a capsule chamber connected below the carrier plate and located at the through hole;

the lower surface of the bearing plate is provided with a ventilation slit extending into the through hole; or,

an air inlet groove extending downwards is formed in the upper hole edge of the through hole on the bearing plate; or,

the upper surface of the bearing plate is provided with an air inlet hole which extends downwards to the inner wall of the through hole in an inclined way.

In some embodiments, the number of ventilation slits is two, symmetrically arranged at two radial sides of the through hole; or,

The number of the air inlet grooves is three, and the air inlet grooves are circumferentially and uniformly distributed at the hole edges of the through holes; or,

the number of the air inlets is three, and the air inlets are circumferentially and uniformly distributed on the periphery of the through hole.

In some embodiments, at least two vent holes communicating with the through holes are formed in the top of the capsule chamber.

In some embodiments, each of the vent holes is uniformly distributed along the circumferential direction;

the cross section of the vent hole is round, oval or strip-shaped.

In some embodiments, the device further comprises a lower shell, wherein the upper part of the lower shell is of an open structure;

the bearing plate is connected to the upper opening of the lower shell, and the lower shell accommodates the capsule chamber therein.

In some embodiments, a U-shaped gap is formed in the wall of the lower shell, the gap penetrates through the bottom wall of the lower shell and two ends of the gap extend to the side walls of opposite sides of the lower shell respectively, and an observation window made of transparent materials and detachably connected with the lower shell is fixedly arranged at the gap.

In some embodiments, the viewing window is integrally formed with an air guide wall.

In some embodiments, the suction nozzle is provided with a suction opening, and the suction nozzle is provided with a bearing plate, and the bearing plate is provided with a suction opening and a suction opening.

In some embodiments, a horizontally extending rotating shaft is fixedly arranged on the bearing plate;

an upper shell overturning buckle in a shape of a Chinese character 'ji' which is rotationally nested outside the rotating shaft is integrally formed at the lower open edge of the upper shell, so that the upper shell is pivotally connected with the bearing plate;

the bottom of the suction nozzle is integrally formed with a suction nozzle overturning buckle in a shape of a Chinese character 'ji' which is rotationally nested outside the rotating shaft, so that the suction nozzle is pivotally connected with the bearing plate.

In some embodiments, the lower open edge of the upper shell is further integrally formed with an upper shell buckle;

the bearing plate is integrally formed with an upper shell clamping seat matched with the upper shell clamping buckle, and the upper shell clamping seat and the rotating shaft are respectively positioned on two opposite sides of the bearing plate.

Compared with the prior art, the invention has the beneficial effects that at least:

1. the pivotal connection among the upper shell, the suction nozzle, the bearing plate and the lower shell does not need to be additionally provided with a special rotating shaft component, so that the production and management cost of products is reduced, and the assembly of the dry powder inhaler is simplified.

2. Set up special guide structure between button and the inferior valve, not only can guide the direction of pressing of button, prevent the button skew, can overturn the button moreover, very conveniently make loading board and inferior valve break away from, and then clear up inferior valve and capsule chamber.

3. The wall of the lower shell is provided with a notch which extends from the open edge of the upper part of the lower shell to the bottom of the lower shell, and a rotating window with the upper end pivotally connected with the bearing plate is arranged at the notch. On the one hand, the state of the capsule in the capsule chamber can be conveniently observed through the rotating window made of the transparent material. On the other hand, the lower shell is easier to clean, is not easy to remain and is easy to dry. After the dry powder inhaler is used, the rotating window can be turned over and opened, and the inside of the lower shell and the capsule chamber are washed by clean water through the notch on the lower shell, so that the powder remained in the using process is washed away, and the dry powder inhaler is ensured to be in a clean state when being used next time.

4. A U-shaped gap is formed in the shell wall on one side of the lower shell, the gap penetrates through the bottom wall of the lower shell, and two ends of the gap extend to the side walls of two opposite sides of the lower shell respectively. The gap is provided with an observation window fixedly connected with the lower shell. Therefore, the observation window has a large length size, and the gap extends from the side wall of one side of the lower shell to the side wall of the other side of the lower shell after passing through the bottom wall of the lower shell, so that the state of the capsule in the capsule chamber can be observed very conveniently through the observation window made of the transparent material. And the inner side of the observation window is integrally formed with an air guide wall, so that the trend of air flow entering the capsule chamber can be optimized.

5. The upper portion of inferior valve is opened on the upper portion open edge and is offered the notch that admits air that undercut just is linked together with inferior valve inner chamber, and the lower portion open edge shaping of inferior valve has the downward bulge just with admitting air notch assorted sealed flange. When the upper shell is closed, the sealing convex plate just shields the air inlet opening, so that foreign objects can be prevented from entering the lower shell from the air inlet opening to pollute the capsule medicine in the capsule chamber. When the upper shell is opened, the sealing convex plate is separated from the air inlet opening, and external air can enter the lower shell from the air inlet opening and then enter the capsule chamber, and under the action of suction force of a user, air flows from the air inlet opening to the inner cavity of the lower shell, then flows into the capsule chamber and then flows into air flow in the user body through the suction nozzle. The structure is ingenious, and the structural strength of the lower shell is not reduced.

6. The bottom of the lower shell is of a larger elliptic open structure, and a large-area observation window is fixedly arranged at the open part of the bottom. So be favorable to the clean condition of user's observation bottom more, also be favorable to improving product strength more, be favorable to reducing inferior valve and observation window forming die's design and shaping degree of difficulty simultaneously, promote production efficiency.

7. The upper shell and the suction nozzle are both pivotally connected to two rotating shafts of the bearing plate through integrally arranged C-shaped overturning buckles, and the two rotating shafts are vertically arranged. When the upper shell is turned over by a user, the force which interferes with the turning over of the suction nozzle is not generated, and when the suction nozzle is turned over, the space of the upper shell is not limited. Greatly facilitates the use of the medicine inhaler.

8. The screen mesh embedding groove for fixing the screen mesh is arranged on the suction nozzle, and the screen mesh seat is not required to be additionally arranged, so that the stability of the assembling position of the screen mesh is guaranteed while the structure of the screen mesh seat is omitted, the manufacturing cost of a product is saved, the manufacturing of the product is simpler, and the efficient quality management is achieved.

9. The top of the capsule chamber is provided with a plurality of vent holes, and the vent holes interact with main air flow entering the capsule chamber to form turbulence, so that powder medicine can be fully dispersed under the drive of turbulent air and sequentially enter a user body through a screen and a suction nozzle, and the powder medicine can be sucked out smoothly by the user.

10. The bearing plate and the capsule chamber are of an integral structure, and the bearing plate and the capsule chamber are integrally formed. Compared with the prior art, the single manufacturing of one part is reduced, and one pressing process can be reduced when the medicine inhaler is assembled.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is an exploded view of a conventional dry powder inhaler;

FIG. 2 is an exploded view of a dry powder inhaler according to a first embodiment of the present application;

FIG. 3 is a schematic view showing the overall structure of a dry powder inhaler according to a first embodiment of the present application;

FIG. 4 is a schematic view of a carrier plate according to an embodiment of the application;

FIG. 5 is a partial sectional view of a dry powder inhaler according to a first embodiment of the present application;

FIG. 6 is a perspective view of the structural member shown in FIG. 5;

FIG. 7 is a partial exploded view of a dry powder inhaler according to a first embodiment of the present application;

FIG. 8 is a schematic diagram of a dry powder inhaler according to a second embodiment of the present application;

FIG. 9 is a second schematic diagram of a dry powder inhaler according to a second embodiment of the present application;

FIG. 10 is an exploded view of a dry powder inhaler according to a third embodiment of the present application;

FIG. 11 is a schematic structural view of an upper shell in a third embodiment of the present application;

fig. 12 is a schematic perspective view of a suction nozzle in a third embodiment of the present application;

FIG. 13 is a schematic cross-sectional view of a suction nozzle according to a third embodiment of the present application;

fig. 14 is a schematic structural view of a carrier plate in a third embodiment of the present application;

FIG. 15 is a schematic view of the structure of the lower shell in the third embodiment of the present application;

FIG. 16 is a schematic view showing the structure of a button in a third embodiment of the present application;

FIG. 17 is a second schematic view of the lower shell in the third embodiment of the present application;

FIG. 18 is a schematic view showing the structure of a viewing window in a third embodiment of the present application;

fig. 19 is a schematic perspective view of a carrier plate according to a fourth embodiment of the application;

FIG. 20 is a schematic cross-sectional view of a carrier plate according to a fourth embodiment of the present application;

FIG. 21 is a schematic view showing the structure of a capsule chamber in a fifth embodiment of the present application;

FIG. 22 is a schematic view showing the structure of a capsule chamber in a sixth embodiment of the present application;

FIG. 23 is a schematic view showing the structure of a capsule chamber in a seventh embodiment of the present application;

FIG. 24 is an exploded view of a dry powder inhaler according to an eighth embodiment of the present application;

FIG. 25 is a partial cross-sectional view of a dry powder inhaler according to an eighth embodiment of the present application;

FIG. 26 is a schematic view of a partial structure of a dry powder inhaler according to embodiment nine of the present application;

FIG. 27 is a schematic view showing the overall structure of a dry powder inhaler according to a tenth embodiment of the present application;

fig. 28 is an exploded view of a dry powder inhaler according to an embodiment of the present application.

Wherein: 1-bearing plate, 2-screen, 3-suction nozzle, 4-capsule chamber, 5-button, 6-taper pin, 7-spring, 8-lower shell, 9-upper shell, 10-rotating window, 11-screen seat and 12-observing window;

1 a-through holes, 1 b-screen seat clamping grooves, 1 c-ventilation slits, 1 d-rotating shafts, 1 f-second rotating shafts, 1 g-bearing plate clamping blocks, 1 h-bearing plate lugs, 1 j-inner bosses, 1 k-outer bosses, 9 f-left bosses, 1 p-air inlet grooves, 1 q-air inlet holes, 1 r-upper shell clamping seats and 1 s-bearing plate overturning angle positioning protrusions;

3 a-suction nozzle lugs, 3 b-suction nozzle rotating holes, 3 c-suction nozzle overturning angle positioning protrusions, 3 d-upper shell mounting guide grooves, 3 e-screen mesh embedding grooves and 3 f-suction nozzle overturning buckles;

4 a-guiding and moving holes, 4 b-guiding and limiting plates, 4 c-ventilation holes and 4 d-capsule chamber air inlet holes;

the device comprises a 5 a-guide moving plate, a 5 b-anti-falling limiting block, a 5 c-upper shell opening inclined plane, a 5 d-guide sliding groove and a 501-spike seat;

8 a-opening, 8 b-lower shell overturning buckles, 8 c-opening seams, 8 d-lower shell lugs, 8 e-lower shell rotating holes, 8 f-air inlet opening, 8 g-bearing plate installation guide grooves and 8 h-guide protrusions;

9 a-upper shell overturning buckles, 9 b-upper shell buckles, 9 c-upper shell lugs, 9 d-upper shell overturning angle positioning protrusions, 9 e-sealing convex plates, 9 f-left bosses, 901-left half shells and 902-right half shells;

10 a-window flip button, 10 b-window button;

11 a-screen seat catch;

12 a-air guide wall.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples may be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are generally those in routine experiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.

In the description of the present specification, the terms "coupled," "mounted," "secured," and the like are to be construed broadly. For example, "connected" may mean fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present application.

Furthermore, the features and aspects described herein may be combined in any suitable manner in one or more embodiments. It will be readily understood by those skilled in the art that the steps or order of operation of the methods associated with the embodiments provided herein may also be varied. Thus, any order in the figures and examples is for illustrative purposes only and does not imply that a certain order is required unless explicitly stated that a certain order is required.

Embodiment one:

fig. 2 to 7 show a preferred embodiment of such a dry powder inhaler of the present application, which, like the conventional structure, also comprises: the capsule comprises a bearing plate 1, a screen 2, a suction nozzle 3, a capsule chamber 4, a button 5, a spring 7, a lower shell 8, an upper shell 9 and other structural components. Wherein:

the carrier plate 1 is provided with a through hole 1a.

The screen 2 is provided at the through hole 1a of the carrier plate 1.

The suction nozzle 3 is disposed above the carrier plate 1, and the suction nozzle 3 accommodates the screen 2 therein.

A capsule chamber 4 is detachably connected below the carrier plate 1 and is also located at the above-mentioned through-hole 1a. The capsule chamber 4 is made of transparent material.

A spike pin 6 is connected to the button 5, and the spike pin 6 can be inserted into the capsule chamber by the pressing operation of the button 5, thereby piercing the capsule placed in the capsule chamber. In order to increase the penetration of the capsule in the capsule chamber by the spike pins 6, the present embodiment is provided with a total of two spike pins 6, and the two spike pins 6 are arranged parallel to each other.

The spring 7 is interposed between the button 5 and the capsule chamber 4, and applies an elastic force to the button 5 in a direction away from the capsule chamber 4.

The upper part of the lower shell 8 is of an open structure, and the bearing plate 1 is fixedly connected with the upper opening of the lower shell 8 in a clamping way, and meanwhile, the lower shell accommodates the capsule chamber 4 therein so as to protect the capsule chamber.

The lower part of the upper case 9 is of an open structure, and the lower open side of the upper case 9 is pivotally connected to the carrier plate 1, whereby the suction nozzle 3 can be selectively covered/uncovered by the pivotal movement of the upper case.

In practice, the screen 2 is removed, and after the capsule containing the powdered medicament is placed in the capsule chamber 4, the screen 2 is fitted. The button 5 is pressed, the button drives the sharp pin 6 to extend into the capsule chamber to puncture the capsule (after the button 5 is released, the button 5 is reset under the action of the elastic force of the spring 7, and the sharp pin 6 is withdrawn from the capsule chamber). The upper case 9 is turned open to expose the suction nozzle 3. The user inhales upwards through the suction nozzle 3, the air flow passes through the capsule chamber 4 and the through hole 1a and enters the mouth of the user, and the powder medicine in the capsule chamber 4 is inhaled into the user under the driving of the air flow.

The key improvement of this embodiment is that a notch 8a extending from the upper open edge of the lower shell to the bottom of the lower shell is formed in the shell wall of the lower shell 8, and a rotation window 10 with the upper end pivotally connected to the bearing plate 1 is arranged at the notch 8 a. And the rotation window 10 is made of transparent material.

It can be seen that the turning window 10 has a large length dimension, which extends from the top to the bottom of the lower shell 8. On the one hand, the state of the capsule in the capsule chamber 4 can be very conveniently observed through the rotating window 10 of the transparent material. On the other hand, after the dry powder inhaler is used, the rotary window 10 can be turned over and opened, and the inside of the lower case and the capsule chamber are washed with clean water through the notch 8a on the lower case 8, so that the powder remained in the use process is washed away, and the dry powder inhaler is ensured to be in a clean state when being used next time.

The pivoting connection of the above-mentioned rotary window 10 with the carrier plate 1 is realized in such a structural form: a horizontally extending rotating shaft 1d is fixed on the bearing plate 1, and two C-shaped window overturning buckles 10a which are rotationally nested outside the rotating shaft 1d are integrally formed at the upper end of the rotating window 10. When we pull the rotary window 10 hard, the window overturning buckle 10a will be separated from the rotating shaft 1d by utilizing the deformation capability of the C-shaped window overturning buckle, so that the rotary window 10 is separated from the bearing plate 1. During assembly, the C-shaped window overturning buckle 10a is aligned to the rotating shaft 1d, and then the window 10 is pushed to rotate forcibly, so that the window overturning buckle 10a is clamped outside the rotating shaft 1d and can rotate around the rotating shaft by utilizing the deformation capacity of the C-shaped window overturning buckle.

In order to prevent the rotary window 10 from turning around the rotary shaft 1d during normal use and affecting normal use of the dry powder inhaler, the present embodiment provides a window catch 10b at the lower end of the rotary window 10 and a window catch seat matching the window catch 10b at the bottom of the lower case 8. Normally, the window buckle 10b is fixedly clamped with the window clamping seat, and the opening 8a on the lower shell 8 is blocked by the rotating window 10, so that sundries are prevented from entering the lower shell and the capsule chamber. The window buckle 10b is unlocked and separated from the window clamping seat, so that the rotary window 10 can be turned over and opened very conveniently.

The second key improvement point of this embodiment is that a guide plate 5a extending in a straight line is fixedly arranged on the button 5, a guide hole 4a corresponding to the guide plate is fixedly arranged on the capsule chamber 4, and the guide plate 5a movably penetrates through the guide hole 4 a. The linear movement of the push button 5 and the spike pin 6 fixed on the push button is guided, so that the movement direction of the push button is prevented from being shifted when a user presses the push button 5, and the spike pin 6 cannot accurately pierce the capsule, and even the spike pin 6 is bent or broken.

In order to further improve the guiding property of the linear movement of the push button 5 and the taper pin 6, the above-mentioned guide plate 5a and guide hole 4a are respectively provided with two, and the two guide plates 5a are arranged in parallel.

Further, two guiding and limiting plates 4b located outside the two guiding and limiting holes 4a are fixedly arranged on the capsule chamber 4, and the two guiding and limiting plates 5a are arranged on the inner sides of the two guiding and limiting plates 4b in a sliding and fitting mode. The guiding limiting plate 4b is in surface contact with the guiding and moving plate 5a, so that the possibility of the guiding and moving plate 5a shifting in the moving process is completely eliminated.

And, the front end integrated into one piece of guide board 5a has anti-drop stopper 5b. In fig. 2, when the guide plate 5a is retreated rightward, the falling-off prevention stopper 5b is caught on the left side of the guide hole 4a, thereby preventing the guide plate 5a from completely falling off the guide hole 4a, thus preventing the button 5 from falling off from the dry powder inhaler.

In view of the fact that the screen 2 is not well fixed directly to the carrier plate 1, a screen seat 11 is specially provided for this embodiment to fix the screen 2 to the carrier plate 1 at the through-holes 1a by means of the screen seat 11. During assembly, the screen 2 is firstly placed in the screen seat 11, and then the screen seat 11 is fixed on the suction nozzle 3.

The specific assembly relationship between the screen seat 11 and the carrier plate 1 is as follows: two screen seat clamping grooves 1b positioned on two radial sides of the through hole 1a are formed in the bearing plate 1, and two screen seat clamping buckles 11a which are respectively clamped and fixed in the two screen seat clamping grooves 1b are integrally formed on the screen seat 11.

A third key improvement of the present embodiment is that two ventilation slits 1c extending into the through-hole are provided on the lower surface of the carrier plate 1, and the ventilation slits 1c are located below the screen 2, and the two ventilation slits 1c are symmetrically arranged on both sides of the through-hole 1a in the radial direction.

In practical use, a part of air flows into the through hole 1a through the ventilation slit 1c, passes through the screen, and is sucked into the user's body through the suction nozzle. The air flows flowing into the through holes 1a from the two ventilation slits 1c are converged into the main air flow flowing into the capsule chamber from the main air inlet opening at the bottom of the capsule chamber (the main air inlet opening at the bottom of the capsule chamber is the main air flow of the capsule chamber with the structure, namely the air inlet hole 4d of the capsule chamber in the figure), and interact to form turbulence, so that the powder medicine is fully dispersed under the driving of the turbulence air and sequentially passes through the screen and the suction nozzle to enter the body of a user.

Since there is inevitably a certain gap between the mesh seat 11 and the carrier plate 1, a small amount of air flows into the gap between the mesh seat 11 and the carrier plate 1 to be converged into the main air flow during use, which causes deviation of the flow resistance of the dry powder inhaler from the designed and predetermined flow resistance value. In this embodiment, the average flow resistance and the turbulence effect can be made equal to the designed and predetermined flow resistance and turbulence effect, respectively, by adjusting the dimensions of the two ventilation slits 1 c.

Of course, the number of the ventilation slits 1c may be three or four, and if the ventilation slits 1c are three in some other embodiments of the present application, the three ventilation slits 1c are preferably uniformly distributed around the through hole 1 a.

A fourth key improvement of the present embodiment is that the upper case 9 is pivotally connected to the carrier plate 1 by this structural form: two C-shaped upper shell overturning buckles 9a which are rotationally nested outside the rotating shaft 1d are integrally formed on the lower opening edge of the upper shell 9.

Furthermore, the above-mentioned structure of the pivotal connection of the rotary window 10 and the carrier plate 1 can also be regarded as a part of the fourth key improvement point of the present embodiment.

In the present embodiment, the bottom of the suction nozzle 3 is pivotally connected to the carrier plate 1. Specifically, the pivoting connection mode of the two is as follows:

The bearing plate 1 is fixedly provided with a second rotating shaft 1f which extends horizontally and is arranged vertically to the rotating shaft 1d, and the bottom of the suction nozzle 3 is integrally formed with two C-shaped suction nozzle overturning buckles which are rotationally nested outside the second rotating shaft 1 f.

The suction nozzle 3 is fixedly engaged with the screen seat 11. In fig. 2, when we turn the suction nozzle 3 upwards, the suction nozzle 3 drives the screen seat 11 and the screen 2 to separate from the carrier plate 1.

An upper shell buckle 9b is integrally formed on the lower opening edge of the upper shell 9, an upper shell clamping seat 1r matched with the upper shell buckle 9b is integrally formed on the bearing plate 1, and the upper shell clamping seat 1r and the rotating shaft 1d are distributed on two opposite sides of the bearing plate 1. When the upper shell 9 is in a closed state, the upper shell buckle 9b and the upper shell clamping seat 1r are clamped and fixed, so that the upper shell 9 is prevented from loosening and overturning on the bearing plate 1.

The button 5 is integrally provided with an upper shell opening inclined plane 5c matched with the upper shell clamping buckle 9b, when a user presses the button 5, the upper shell opening inclined plane 5c on the button 5 can abut against the upper shell clamping buckle 9b, and the upper shell clamping buckle 9b is unlocked and separated from the upper shell clamping seat 1r, so that the upper shell 9 can be freely turned over.

In this embodiment, the carrier plate 1 and the lower case 8 are fixedly connected together in such a structural form: the periphery of the bearing plate 1 is integrally formed with a plurality of bearing plate clamping blocks 1g which are distributed at intervals, the inner side of the upper opening of the lower shell 8 is integrally formed with a plurality of bearing plate clamping grooves which are distributed at intervals, and the bearing plate clamping blocks 1g are clamped and fixed in the bearing plate clamping grooves.

Embodiment two:

fig. 8 and 9 show a second preferred embodiment of the dry powder inhaler of the present application, which is substantially identical in structure to the dry powder inhaler of the first embodiment, and differs therefrom mainly in the following aspects:

first, in the present embodiment, the upper case 9 is not a unitary structure, but is formed of split-type left and right half cases 901 and 902, and the left and right half cases 901 and 902 are pivotally connected to the left and right sides of the carrier plate 1, respectively, in a split-type structure.

Next, in this embodiment, the lower case 8 is not provided with a notch 8a extending from the upper opening edge of the lower case to the bottom of the lower case, and the rotation window 10 of the structure of the first embodiment is not provided. But adopts the structural form:

a U-shaped gap 8c is formed in the wall of the lower shell 8, the gap 8c penetrates through the bottom wall (i.e. the bottom wall) of the lower shell 8, and two ends of the gap 8c extend to the side walls of two opposite sides of the lower shell respectively. The gap 8c is provided with an observation window 12 fixedly connected to the lower shell 8, and the observation window 12 is connected to the lower shell 8 in a non-detachable manner, although in other embodiments of the present application, a detachable connection manner, such as a snap connection, may be selected. The viewing window 12 is made of transparent material.

It can be seen that the observation window 12 and the slit 8c have a large length, the slit 8c extends from the side wall of one side of the lower case 8 to the side wall of the other side of the lower case 8 after passing through the bottom wall of the lower case, and two ends of the slit 8c are very close to the upper open edge of the lower case 8. The state of the capsule in the capsule chamber 4 can be observed through the transparent observation window 12.

And, the inside integrated into one piece of observation window 12 has the air guide wall for optimize the air current trend that gets into the capsule room.

Embodiment III:

fig. 10 to 18 show a third preferred embodiment of the dry powder inhaler of the present application, which is substantially identical in structure to the dry powder inhaler of the first embodiment, and differs therefrom mainly in the following aspects:

first, the connection manner among the upper case 9, the carrier plate 1, the suction nozzle 3 and the lower case 8 is different.

the side part of the bearing plate 1 is integrally formed with two bearing plate lugs 1h which are distributed at intervals, the inner sides of the two bearing plate lugs 1h, which are close to each other, are integrally formed with cylindrical inner bosses 1j which are coaxially arranged, and the outer sides of the two bearing plate lugs 1h, which are away from each other, are integrally formed with cylindrical outer bosses 1k which are coaxially arranged. The aforementioned inner boss 1j and outer boss 1k are also coaxially arranged.

The side part of the suction nozzle 3 is integrally formed with two suction nozzle lugs 3a which are distributed at intervals, the two suction nozzle lugs 3a are provided with suction nozzle rotating holes 3b which are coaxially arranged and matched with the inner boss 1j, and the two suction nozzle rotating holes 3b are respectively and rotatably sleeved outside the inner boss 1 j. The pivotal connection of the suction nozzle 3 and the carrier plate 1 is thus achieved.

An upper shell lug 9c is integrally formed on the lower opening edge of the upper shell 9, a cylindrical left boss 9f and a cylindrical right boss which are coaxially arranged are integrally formed on the left side and the right side of the upper shell lug 9c, and the left boss 9f and the right boss are respectively and rotatably sleeved in two suction nozzle rotating holes 3b on the suction nozzle 3. The pivoting connection of the upper shell 9 and the carrier plate 1 is thus achieved.

The upper open edge of the lower shell 8 is integrally formed with two lower shell lugs 8d which are distributed at intervals, the two lower shell lugs 8d are provided with lower shell rotating holes 8e which are coaxially arranged, and the total two lower shell rotating holes 8e on the two lower shell lugs 8d are respectively sleeved outside the outer convex platform 1 k. When the lower shell 8 and the capsule chamber 4 are required to be cleaned, the lower shell 8 is turned over and opened, so that the cleaning device is very convenient.

Upper shell installation guide grooves 3d are formed on the opposite inner sides of two nozzle lugs 3a on the nozzle 3, and when the nozzle 3 and the upper shell 9 are assembled, the left boss 9f and the right boss slide into the nozzle rotating hole 3b through the upper shell installation guide grooves 3d, so that the pivoting connection of the nozzle 3 and the upper shell 9 is realized.

The upper open edge of the lower shell 8 is integrally formed with two lower shell lugs 8d which are distributed at intervals, the two lower shell lugs 8d are provided with lower shell rotating holes 8e which are coaxially arranged, and the total two lower shell rotating holes 8e on the two lower shell lugs 8d are respectively sleeved outside the outer boss 1k, so that the pivoting connection of the lower shell 8 and the bearing plate 1 is realized. When the lower shell 8 and the capsule chamber 4 are required to be cleaned, the lower shell 8 is turned over and opened, so that the cleaning device is very convenient.

In order to ensure that the lower shell 8 and the bearing plate 1 can be in a relatively stable overturning and buckling state, a clamping structure matched with each other is also arranged between the lower shell 8 and the bearing plate 1 in the embodiment. When the lower case 8 and the capsule chamber 4 need to be cleaned, the locking structure of the lower case 8 and the capsule chamber 4 is unlocked first, and then the lower case 8 is opened by turning over.

Also, the opposite inner sides of the two lower case lugs 8d on the lower case 8 are formed with the carrier plate mounting guide grooves 8g through which the outer bosses 1k slide into the lower case turning holes 8e when the carrier plate mounting guide grooves 8g and the carrier plate 1 are assembled.

Further, an upper case turning angle positioning projection 9d friction-fitted with the lower case 8 is integrally formed on the upper case lug 9 c. When the upper shell 9 is opened by a certain angle to cause the upper shell overturning angle positioning protrusion 9d to contact with the lower shell 8 to generate friction interference, the upper shell 9 can receive a certain rotation resistance, so that the upper shell 9 can not rotate by means of self weight, and the trouble that a user rotates or even closes due to the self weight of the upper shell is eliminated.

In the same way, the nozzle lug 3a is also integrally formed with a nozzle turning angle positioning protrusion 3c in friction fit with the lower shell 8. When the suction nozzle 3 is opened by a certain angle so that the suction nozzle overturning angle positioning protrusion 3c is contacted with the lower shell 8 to generate friction interference, the suction nozzle 3 can not freely rotate under the action of the friction force due to the gravity of the suction nozzle.

Similarly, the bearing plate lug 1h is also integrally formed with a bearing plate overturning angle positioning protrusion 1s in friction fit with the lower shell 8, and when the bearing plate 1 is overturned for a certain angle relative to the lower shell so that the bearing plate overturning angle positioning protrusion 1s contacts with the lower shell 8 to generate friction interference, the bearing plate 1 can not freely rotate under the action of the friction force due to self gravity.

Of course, the structures of the upper case flip angle positioning projection 9d, the suction nozzle flip angle positioning projection 3c, and the carrier plate flip angle positioning projection 1s described above can also be applied in the first embodiment.

As can be seen from the above, the present embodiment does not need to separately provide a rotating shaft connected to the carrier plate 1 as in the conventional art, and omits the rotating shaft structure separately provided in the conventional dry powder inhaler, so that the cost of the product is reduced, and the assembly process of the product is simplified.

Second, the structure of the screen seat 11 is not separately provided in the present embodiment, but the suction nozzle 3 is directly used to fix the screen 2. The suction nozzle 3 is provided with a screen positioning structure matched with the screen 2, which is equivalent to integrating the suction nozzle 2 and the screen seat 11 in one embodiment. The suction nozzle 3 is clamped and fixed with the bearing plate 1. During assembly, the screen 2 is placed in the suction nozzle 3 for fixation, and then the suction nozzle 2 is connected with the bearing plate 1, so that the screen 2 is fixed at the through hole 1 a.

The screen positioning structure on the suction nozzle 3 is specifically a screen embedding groove 3e, during assembly, the screen 2 is embedded and positioned in the screen embedding groove, and then the screen is melted, so that the wall around the screen embedding groove 3e is melted and bent, and then the screen 2 is pressed (the bonding strength of the suction nozzle 3 and the screen 2 is ensured, and the screen is prevented from falling off), thereby realizing the fixation of the screen 2 and the suction nozzle 3.

The carrier plate 1 is provided with a suction nozzle clamping groove, and the suction nozzle 3 is integrally provided with a suction nozzle clamping tongue clamped and fixed in the suction nozzle clamping groove, which can be shown in fig. 14 (not labeled in the figure). During normal use, the suction nozzle 3 is clamped and fixed with the bearing plate 1, and when a capsule is required to be taken out or put in, the suction nozzle clamping tongue and the suction nozzle clamping groove are separated, and the suction nozzle 3 is turned over and opened.

Third, in this embodiment, an air inlet opening 8f (the carrier plate 1 does not completely block the air inlet opening 8 f) which is concave downward and is communicated with the inner cavity of the lower shell is formed on the upper open edge of the lower shell 8, and a sealing convex plate 9e which protrudes downward and is matched with the air inlet opening 8f is formed on the lower open edge of the upper shell 9.

When the upper case 9 is closed, the sealing convex plate 9e just shields the air inlet opening 8f to prevent foreign objects from entering the lower case 8 from the air inlet opening 8f to pollute the capsule medicine in the capsule chamber.

When the upper shell 9 is opened, the sealing convex plate 9e is separated from the air inlet opening 8f, and external air can enter the lower shell 8 from the air inlet opening 8f and then enter the capsule chamber, and under the suction action of a user, air flows from the air inlet opening 8f to the inner cavity of the lower shell, then to the capsule chamber and then flows into the air flow in the user through the suction nozzle.

Fifth, in the present embodiment, three air inlet grooves 1p extending downward are formed at the upper edge of the through hole 1a on the carrier plate 1. After the assembly, the air inlet groove 1p is engaged with the outer wall of the suction nozzle to form a gas flow hole communicating with the through hole 1 a. In practical use, a part of the air flows into the through hole 1a through the three air inlet grooves 1p (i.e., the air flow holes), passes through the screen, and is sucked into the user's body through the suction nozzle. The air flows flowing into the through holes 1a from the three air inlet grooves 1p are converged into the main air flow flowing into the capsule chamber from the main air inlet opening at the bottom of the capsule chamber (the main air inlet opening at the bottom of the capsule chamber is of the own structure of the capsule chamber, namely the air inlet holes 4d of the capsule chamber in the figure), and the air flows interact to form turbulence, so that the powder medicine is fully dispersed under the drive of the turbulent air and sequentially enters the body of a user through the screen and the suction nozzle.

The three air inlet grooves 1p are uniformly and symmetrically distributed along the circumferential direction so as to improve the turbulence effect of the air flow at the through holes.

Sixth, in this embodiment, the spike 6 is fixedly connected to the button 5 through a spike holder 501 made of plastic. The spike pin 6 is made of metal, and the spike pin seat 501 is fixed with the button caliper. When the plastic spike holder 501 is injection molded, the metal spike 6 is put into the injection mold as a metal insert, so that after the spike holder 501 is injection molded, the spike 6 and the spike holder 501 are combined into a whole, and the spike holder 501 and the spike holder are not detachably assembled. We call this combination: the spike 6 and the spike holder 501 are injection molded.

Because the spike pin 6 and the spike pin seat 501 are fixed by injection molding, the combination strength of the spike pin 6 and the spike pin seat 501 is high, and the spike pin seat cannot be separated. The spike holder 501 and the button 5 are engaged and fixed, and are difficult to be disengaged in normal use. This ensures the stability of the connection of the spike 6 and the push button 5.

The spike pins 6 are provided in total in two, and the two spike pins 6 are arranged in parallel. In order to ensure that the tip angles of the two spike pins 6 are kept consistent, the present embodiment provides a locating plane at the tail end of the spike pin 6. To ensure that the tip angles of the two spikes 6 remain consistent when the spikes 6 and the spike holder 501 are injection molded together, the locating plane can locate the circumferential position of the two spikes 6.

And, a slot (not labeled in the figure) for arranging the button 5 is formed on the lower shell 8, a guide protrusion 8h (two guide protrusions in total) is fixedly arranged on the slot walls on two sides of the slot, and guide sliding grooves 5d matched with the guide protrusions 8h are formed on two sides of the button 5. The guide protrusion 8h is slidably fitted in the guide chute 5d to guide the pressing movement of the push button 5. This structure can be used in combination with the structures of the guide plate 5a, the guide hole 4a and the guide limiting plate 4b in the first embodiment, and when in combination, the guide plate 5a is disposed on the spike holder 501.

The above-mentioned cooperation structure of guide protrusion 8h and guide chute 5d not only has the guide effect to the pressing movement of button 5, but also has following technical effect:

when the user presses down on the outer end of the push button 5, the push button rotates about the guide protrusion 8h, so that the inner end of the push button 5 "picks up" the carrier plate 1 upwards (like a lever, wherein the guide protrusion is opposite to the fulcrum of the lever), and the snap-fit connection of the carrier plate 1 and the lower shell 8 is separated, so that the user can clean the lower shell 8 and the capsule chamber. After the carrier plate 1 is "picked up", the spike holder 501 and the button 5 are separated from each other, the spike holder 501 and the spike 6 are connected with the supporting seat 1, and the button 5 is restricted from being connected with the lower case 8 at the guide protrusion 8 h.

In this embodiment, the lower shell 8 is also provided with the same observation window 12 as that of the second embodiment, and the inner side of the observation window 12 is integrally formed with an air guide wall 12a for optimizing the direction of the air flow entering the capsule chamber, as shown in fig. 18. The air flow entering the lower shell from the air inlet opening 8f flows into the capsule chamber through the air inlet hole of the capsule chamber under the diversion effect of the air guide wall 12 a.

Embodiment four:

fig. 19 and 20 show a fourth preferred embodiment of the dry powder inhaler according to the present application, which has a structure substantially the same as that of the dry powder inhaler according to the third embodiment, and the main difference between them is that the carrier plate 1 of the present embodiment is not provided with the air inlet slot 1p, but the carrier plate 1 is provided with an air inlet hole instead of the air inlet slot, so that turbulent air flow is formed in the through hole 1a, and thus the effect of deagglomerating or dispersing the active powder and the carrier is achieved. The method comprises the following steps:

the upper surface of the bearing plate 1 is provided with three air inlet holes 1q which extend obliquely downwards to the inner wall of the through hole 1 a. And the three intake holes 1q are uniformly and symmetrically distributed in the circumferential direction around the through hole 1 a.

In practical application, a part of air flows into the through hole 1a through the three air inlet holes 1q (namely, the air flow holes), passes through the screen, and is sucked into the user body through the suction nozzle. The air flows flowing into the through holes 1a from the three air inlet holes 1q are converged into the main air flow flowing into the capsule chamber from the main air inlet opening at the bottom of the capsule chamber (the main air inlet opening at the bottom of the capsule chamber is of a structure of the capsule chamber in the prior art), and interact to form turbulence, so that the powder medicine is fully dispersed under the drive of the turbulence air and sequentially enters the body of a user through the screen and the suction nozzle.

Fifth embodiment:

fig. 21 shows a fifth preferred embodiment of the dry powder inhaler according to the present application, which has a structure substantially the same as that of the dry powder inhalers of the third and fourth embodiments, and is mainly different in that the carrier plate 1 of the present embodiment is provided with neither the air inlet slot 1p structure of the third embodiment nor the air inlet hole 1q structure of the fourth embodiment, but the effect of forming turbulent air flow in the through hole 1a is achieved by providing three air holes 4c in the lower capsule chamber 4. The method comprises the following steps:

three vent holes 4c communicated with the through holes 1a are formed in the top of the capsule chamber 4, and the three vent holes 4c are uniformly and symmetrically distributed along the circumferential direction.

In practice, a part of the air flows into the through hole 1a through the three ventilation holes 4c (i.e., the aforementioned air flow holes), passes through the screen, and is sucked into the user's body through the suction nozzle. The air flows flowing into the through holes 1a from the three vent holes 4c are converged into the main air flow flowing into the capsule chamber from the main air inlet opening of the bottom of the capsule chamber (the main air inlet opening of the bottom of the capsule chamber is of a structure of the capsule chamber in the prior art), and interact to form turbulence, so that the powder medicine is fully dispersed under the drive of the turbulence air and sequentially passes through the screen and the suction nozzle to enter the body of a user.

In this embodiment, the vent hole 4c has a circular cross section.

Example six:

fig. 22 shows a sixth preferred embodiment of the dry powder inhaler of the present application, which is substantially identical in structure to the dry powder inhaler of the fifth embodiment, except that the cross section of the vent hole 4c in the capsule chamber is elliptical rather than circular in this embodiment.

Embodiment seven:

fig. 23 shows a seventh preferred embodiment of the dry powder inhaler of the present application, which is substantially identical in structure to the dry powder inhaler of the fifth embodiment, except that the cross section of the vent hole 4c in the capsule chamber is in the form of a strip rather than a circle.

Example eight:

fig. 24 and 25 show an eighth preferred embodiment of the dry powder inhaler according to the present application, which has substantially the same structure as the dry powder inhaler of the third embodiment, except that the capsule housing 4 and the carrier plate 1 are integrally formed in one piece in the present embodiment.

Compared with the prior art, the single manufacturing of one part can be reduced, and one pressing procedure is reduced when the medicine inhaler is assembled.

The capsule chamber 4 and the bearing plate 1 are made of transparent materials, so that a user can conveniently observe the condition in the capsule chamber after opening the lower shell 8.

Example nine:

fig. 26 shows a ninth preferred embodiment of the dry powder inhaler according to the present application, which has substantially the same structure as the dry powder inhaler according to the third embodiment, except that the structure of the viewing window 12 on the lower housing 8 is the same as that of the third embodiment. Specifically, the bottom of the lower case 8 is a large oval open structure (the lower case 8 approximates a cylindrical structure), the caliber of which is at least one half of the diameter of the lower case 8, and a large-area viewing window 12 of transparent material is fixedly provided at the bottom open position. So be favorable to the clean condition of user's observation bottom more, also be favorable to improving product strength more, be favorable to reducing inferior valve and observation window forming die's design and shaping degree of difficulty simultaneously, promote production efficiency.

Example ten:

fig. 27 and 28 show a tenth embodiment of the dry powder inhaler according to the present application, which is basically identical in construction to embodiment one, with the main difference that the mouthpiece 3 and the upper housing 1 have the same pivoting direction in this embodiment. The method comprises the following steps:

a rotating shaft 1d extending horizontally is fixedly arranged on the bearing plate 1, two C-shaped upper shell overturning buckles 9a which are rotationally nested outside the rotating shaft 1d are integrally formed on the lower opening edge of the upper shell 9, and thus the upper shell 9 is in pivot connection with the bearing plate 1; the bottom of the suction nozzle 3 is integrally formed with a C-shaped suction nozzle overturning buckle 3f which is rotationally nested outside the rotating shaft 1d, so that the suction nozzle 3 is pivotally connected with the bearing plate 1. The upper end of the rotary window 10 is integrally formed with a C-shaped window overturning buckle 10a which is rotationally nested outside the rotary shaft 1d, so that the rotary window 10 is pivotally connected with the bearing plate 1.

The window flip button 10a and the nozzle flip button 3f described above are disposed immediately between the two upper case flip buttons 9 a.

And, the upper portion open edge integrated into one piece of inferior valve 8 has two rotatory nested C style of calligraphy inferior valve upset knot 8b outside pivot 1d, so realizes the pivotal connection of inferior valve 8 and loading board 1. Of course, in this embodiment, the lower shell 8 is also connected with the carrier plate 1 in a clamping manner, and the lower shell 8 can only turn over relative to the carrier plate 1 after the lower shell 8 is locked and unlocked with the carrier plate 1.

The foregoing embodiments are merely illustrative of the technical concept and features of the present application, and are not intended to limit the scope of the application. All equivalent changes or modifications made according to the spirit of the main technical proposal of the application should be covered in the protection scope of the application.

Claims

1. A dry powder inhalation assembly comprising:

a carrier plate (1) on which a through hole (1 a) is formed;

a suction nozzle (3) connected above the carrier plate (1) and located at the through hole (1 a); and

a capsule chamber (4) connected below the carrier plate (1) and located at the through hole (1 a);

The method is characterized in that:

the lower surface of the bearing plate (1) is provided with a ventilation slit (1 c) extending into the through hole (1 a); or,

an air inlet groove (1 p) extending downwards is formed in the upper hole edge of the through hole (1 a) on the bearing plate (1); or,

the upper surface of the bearing plate (1) is provided with an air inlet hole (1 q) which extends downwards to the inner wall of the through hole (1 a) in an inclined mode.

2. A dry powder inhalation assembly according to claim 1, characterised in that the number of ventilation slits (1 c) is two, symmetrically arranged on both radial sides of the through-going aperture (1 a); or,

the number of the air inlet grooves (1 p) is three, and the air inlet grooves are circumferentially and uniformly distributed at the hole edges of the through holes (1 a); or,

the number of the air inlets (1 q) is three, and the air inlets are circumferentially and uniformly distributed on the periphery of the through hole (1 a).

3. A dry powder inhalation assembly according to claim 1 characterised in that the top of the capsule chamber (4) is provided with at least two ventilation holes (4 c) communicating with the through-going holes (1 a).

4. A dry powder inhalation assembly according to claim 3 characterised in that each of the ventilation holes (4 c) is evenly distributed in the circumferential direction;

the cross section of the vent hole (4 c) is round, oval or strip-shaped.

5. The dry powder inhalation assembly according to claim 1, further comprising a lower housing (8), the upper part of the lower housing (8) being of open construction;

the bearing plate (1) is connected to the upper opening of the lower shell (8), and the lower shell (8) accommodates the capsule chamber (4) therein.

6. The dry powder inhalation module according to claim 5, wherein a U-shaped slit (8 c) is formed in the wall of the lower case (8), the slit (8 c) penetrates through the bottom wall of the lower case (8) and extends to the side walls of opposite sides of the lower case (8) at both ends, and an observation window (12) made of a transparent material and detachably connected with the lower case (8) is fixedly arranged at the slit (8 c).

7. The dry powder inhalation module according to claim 6, wherein the viewing window (12) is integrally formed with an air guide wall (12 a).

8. The dry powder inhalation assembly according to claim 1, further comprising an upper housing (9), the upper housing (9) being of an open construction and a lower open edge of the upper housing (9) being pivotally connected to the carrier plate (1), the mouthpiece (3) being selectively closable or exposable by means of a pivotal movement of the upper housing (9).

9. A dry powder inhalation assembly according to claim 8 characterised in that the carrier plate (1) is fixedly provided with a horizontally extending spindle (1 d);

The upper shell (9) is integrally formed with a C-shaped upper shell overturning buckle (9 a) which is rotationally nested outside the rotating shaft (1 d) at the opening edge of the lower part of the upper shell (9), so that the upper shell (9) is in pivot connection with the bearing plate (1);

the bottom of the suction nozzle (3) is integrally formed with a C-shaped suction nozzle overturning buckle (3 f) which is rotationally nested outside the rotating shaft (1 d), so that the suction nozzle (3) is pivotally connected with the bearing plate (1).

10. The dry powder inhalation assembly according to claim 9, wherein the lower open edge of the upper shell (9) is further integrally formed with an upper shell catch (9 b);

the bearing plate (1) is integrally formed with an upper shell clamping seat (1 r) matched with the upper shell clamping buckle (9 b), and the upper shell clamping seat (1 r) and the rotating shaft (1 d) are respectively positioned on two opposite sides of the bearing plate (1).