CN215309298U - Inhalation device - Google Patents

Abstract

The application discloses an inhalation device which reduces the difficulty and cost of production while ensuring the use effect through a simplified structure; in the inhalation device of this application, filter and put into the mouth with the capsule and closely laminate, and when suction nozzle and lid board are laminated, the whole capsule storehouse that all is located of sieve mesh portion, from this when inhaling medicine powder, the air current can produce the ideal flow direction through sieve mesh portion better under the negative pressure effect, guarantees the effective inhalation of medicine powder.

Description

Inhalation device

Technical Field

The application relates to the technical field of medical equipment, in particular to an inhalation device.

Background

In current methods of administration, drugs are taken by direct inhalation for some respiratory diseases. For example, a capsule with a medicament powder is pierced by a special administration device at the time of administration, and the medicament powder is inhaled into the respiratory tract. However, in the prior art, the conventional drug delivery devices are generally complicated in structure, which increases the manufacturing cost.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned disadvantages of the related art, the present application aims to provide an inhalation device to overcome the technical problems of complicated structure and high manufacturing cost of the drug delivery device in the related art.

To achieve the above and other related objects, the present application provides an inhalation device comprising: the suction nozzle comprises a suction nozzle body and a suction channel formed on the suction nozzle body, and the bottom of the suction channel is of a tubular structure; the filtering piece comprises a sleeving part sleeved at the bottom end of the tubular structure and a screen part integrally formed with the sleeving part and is used for preventing capsule scraps generated after the capsule is punctured from entering the suction channel; the capsule bin is positioned below the suction nozzle, and comprises a cover plate and a cavity which is integrally formed at the lower side of the cover plate and is used for containing capsules in a use state, and the cover plate is provided with a capsule placing port which is communicated with the cavity and is correspondingly combined with the screen part; the piercing component is arranged on one side of the capsule bin and comprises a button part and a piercing needle which are movably arranged on one side of the capsule bin, and the button part moves relative to the capsule bin when being stressed in a use state so as to drive the piercing needle to pierce the capsule in the capsule bin; a base including a seat for receiving the chamber and a portion of the piercing assembly; the cover body covers the suction nozzle in a clamping state with the base; when negative pressure is generated in the inhalation channel in the state that the capsule is placed in the capsule bin and the capsule is punctured, the medicine powder in the capsule enters the inhalation channel through the capsule placing opening and the screen part.

In certain embodiments of the present application, the lid, the mouthpiece, the capsule magazine, and the distal side of the base are coaxially hinged by a hinge.

In some embodiments of the present application, the cover includes a first snap-fit portion located proximal to the cover for snap-fitting with the proximal edge of the cover.

In some embodiments of the present application, the first engaging portion is a protrusion located inside the proximal end of the cover, and the proximal end of the cover has an end surface matched with the protrusion, so that the cover and the cover are engaged in a proximal direction.

In certain embodiments of the present application, the cap includes a first non-slip portion proximal to the cap.

In certain embodiments of the present application, the nozzle body comprises:

the mounting part is used for being clamped with the cover plate of the capsule bin; a suction port portion integrally formed with the mounting portion and having an approximately flat elliptical structure adapted to the mouth of a human body; wherein, a transition surface is arranged between the mounting part and the suction port part.

In certain embodiments of the present application, the mouthpiece includes a second catch located proximal to the mouthpiece; the cover plate comprises a third clamping part which is positioned near the cover plate, and the second clamping part and the third clamping part are clamped at the near end.

In some embodiments of the present application, the second engaging portion is a hook structure formed on a lower surface of the suction nozzle, and the third engaging portion is a bayonet provided on the cover plate and corresponding to the hook structure.

In certain embodiments of the present application, the mouthpiece includes a second non-slip portion located proximal to the mouthpiece.

In some embodiments of the present application, the bottom end of the tubular structure extends out of the suction nozzle body, so that the filter member sleeved thereon presses the capsule inlet under the clamping state of the suction nozzle and the cover plate, so as to form a closed passage for air flow.

In some embodiments of the present application, the contact surface of the filter member and the capsule chamber has a matching end surface to make the filter member and the capsule chamber tightly fit in a clamping state of the suction nozzle and the capsule chamber.

In some embodiments of the present application, the cover plate includes a side wing, and the side wing is provided with a fourth engaging portion for engaging with a fifth engaging portion on the upper side edge of the base.

In some embodiments of the present application, the cover plate is provided with a first air inlet to facilitate the external air to enter the inner space of the base through the first air inlet when the negative pressure is generated in the suction passage.

In certain embodiments of the present application, the chamber of the capsule cartridge comprises a main chamber having a diameter greater than the transverse cross-sectional diameter of the capsule and less than the longitudinal cross-sectional diameter of the capsule.

In some embodiments of the present application, the chamber bottom of the capsule chamber is provided with a sub-chamber communicated with the main chamber, the bottom end of the sub-chamber is provided with a second air inlet, a gap is arranged between the second air inlet and the bottom surface of the base, and the diameter of the sub-chamber is smaller than the transverse section diameter of the capsule.

In certain embodiments of the present application, the chamber of the capsule cartridge comprises mounting structure for cooperating with the piercing assembly such that the piercing assembly punctures a capsule within the capsule cartridge with its piercing needle during movement relative to the capsule cartridge.

In certain embodiments of the present application, the mounting structure comprises: the mounting plate is provided with symmetrical clamping grooves; the abutting part is formed on the mounting plate and is positioned between the symmetrical clamping grooves; and the two pipe parts are formed on the mounting plate, are respectively positioned on the upper side and the lower side of the abutting part, are communicated with the cavity and are used for limiting the puncturing direction of the puncture needle.

In certain embodiments of the present application, the piercing assembly further comprises a reset mechanism located between the button member and the abutment for being depressed upon movement of the button member in a direction towards the capsule compartment to provide a reset force to restore the piercing needle and the button member to an initial position.

In some embodiments of the present application, the lancet is disposed through the tube portion, and the proximal end of the lancet is fixedly coupled to the button member.

In some embodiments of the present application, the button member includes a pressing portion and a movable connecting portion integrally formed with the pressing portion, and a distal end of the movable connecting portion has a limiting portion engaged with the slot.

In certain embodiments of the present application, an outer surface of the pressing portion is provided with a third slippage prevention portion.

In certain embodiments of the present application, the tip portion of the lancet has a bevel.

In some embodiments of the present application, the number of the needles is two and the needles are arranged in an up-down manner, and the distance between the two needles arranged in the up-down manner is smaller than the height of the capsule and is larger than half of the height of the capsule.

In certain embodiments of the present application, the seat of the base includes a fourth non-slip portion distal to the seat.

In some embodiments of the present application, the proximal end of the base is provided with an opening to provide a space for movement of the piercing assembly.

In some embodiments of the present application, the seat body of the base is provided with a second stopping portion for limiting the movement position of the piercing assembly relative to the capsule chamber.

In some embodiments of the present application, the base further comprises a transparent window installed on the base body, and the cavity of the capsule chamber has a transparent wall surface for observing the state of the capsule in the capsule chamber through the base in the use state.

In some embodiments of the present application, the transparent window is U-shaped, and correspondingly, the bottom surface of the base body of the base is provided with mounting grooves extending to the front and rear sides of the base body for mounting the transparent window.

In some embodiments of the present application, the base is made of a transparent material, and the chamber of the capsule chamber has a transparent wall surface for observing the state of the capsule in the capsule chamber through the base in the use state.

To sum up, the suction device in this application has reduced the degree of difficulty and the cost of production through the structure of simplifying when guaranteeing the result of use. In the inhalation device of this application, filter and put into the mouth with the capsule and closely laminate, and when suction nozzle and lid board are laminated, the whole capsule storehouse that all is located of sieve mesh portion, from this when inhaling medicine powder, the air current can produce the ideal flow direction through sieve mesh portion better under the negative pressure effect, guarantees the effective inhalation of medicine powder.

Furthermore, the guiding structure of the cover plate and the button member can prevent the puncture needle from being punctured or generating resistance feeling due to unstable moving position of the button member when being pressed. The cover body, the suction nozzle, the filter piece and the base of the suction device are coaxially connected, and anti-skid structures are arranged at multiple positions, so that the suction device accords with the ergonomic design.

Other aspects and advantages of the present application will be readily apparent to those skilled in the art from the following detailed description. Only exemplary embodiments of the present application have been shown and described in the following detailed description. As those skilled in the art will recognize, the disclosure of the present application enables those skilled in the art to make changes to the specific embodiments disclosed without departing from the spirit and scope of the invention to which the present application relates. Accordingly, the descriptions in the drawings and the specification of the present application are illustrative only and not limiting.

Drawings

FIG. 1a is an exploded view of an embodiment of an inhalation device of the present application;

FIG. 1b is a schematic view of the lid, mouthpiece, capsule chamber and base of the present application in an embodiment of the present application;

FIG. 2 is a schematic view of a nozzle of the present application in one embodiment;

FIG. 3 is a schematic diagram of the filter of the present application in one embodiment;

FIG. 4 is a schematic structural diagram of a cover according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a capsule cartridge of the present application in one embodiment;

FIG. 6 is a schematic view of the cover and capsule magazine of the present application in one embodiment;

FIG. 7 is a schematic structural diagram of a cover according to another embodiment of the present application;

FIG. 8 is a schematic view of a cover plate of the present application in another embodiment;

FIG. 9 shows a schematic view of the present application with the mouthpiece and capsule magazine engaged in one embodiment;

FIG. 10 is a schematic view of the filter and capsule cartridge of the present application in one embodiment;

FIG. 11 is a schematic view of another embodiment of the filter of the present application;

FIG. 12a shows a schematic view of the filter and mouthpiece of the present application in one embodiment;

FIG. 12b shows a cross-sectional view of the filter and mouthpiece of the present application in one embodiment;

FIG. 13 is a schematic view of the filter of the present application in one embodiment;

FIG. 14a is a schematic view of a base according to an embodiment of the present application;

FIG. 14b is an enlarged view of a portion of the structure of portion A of FIG. 14a of the present application;

FIG. 15 is a schematic view of a capsule cartridge of the present application in one embodiment;

FIG. 16 is a schematic view of a piercing assembly and capsule cartridge of the present application in a further embodiment;

FIG. 17 is a schematic view of a capsule cartridge and capsule of the present application in one embodiment;

FIG. 18 shows a schematic view of the lancet needle of the present application in one embodiment;

FIG. 19 is a schematic view of the button member of the present application in one embodiment;

FIG. 20a is a schematic view of a button member of the present application in another embodiment;

FIG. 20b is an enlarged view of the portion G of FIG. 20 a;

FIG. 21 illustrates a schematic view of a piercing assembly of the present application in one embodiment;

FIG. 22 is a schematic view of a button member of the present application in one embodiment;

FIG. 23 shows an exploded view of the piercing assembly and capsule cartridge of the present application in another embodiment;

FIG. 24 is a schematic view of a base according to another embodiment of the present application;

FIG. 25 is a schematic view of a base according to the present application in a further embodiment;

FIG. 26 shows a schematic view of a capsule according to the present application in an embodiment;

figure 27 shows a schematic view of an inhalation device according to the present application in a further embodiment;

figure 28 shows a schematic view of the air flow pattern of the inhalation device of the present application in one embodiment.

Detailed Description

The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure.

In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and that changes in the module or unit composition, electrical, and operation may be made without departing from the spirit and scope of the present disclosure. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Although the terms first, second, etc. may be used herein to describe various elements, information, or parameters in some instances, these elements or parameters should not be limited by these terms. These terms are only used to distinguish one element or parameter from another element or parameter. For example, the first engagement portion may be referred to as the second engagement portion, and similarly, the second engagement portion may be referred to as the first engagement portion, without departing from the scope of the various described embodiments. The first engaging portion and the second engaging portion are each described as one engaging portion, but they are not the same engaging portion unless the context clearly indicates otherwise. The similar situation also comprises a first stopping part and a second stopping part, or a first anti-skid part and a second anti-skid part.

Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

As described in the background, in some embodiments, a drug delivery device for treating respiratory diseases is generally complex in structure, for example, in order to avoid puncturing a capsule and inhaling the fragments of the capsule together when sucking medicine powder, the drug delivery device has a metal screen, in order to fix the metal screen on a suction nozzle, a fixing frame with a special structure needs to be additionally manufactured to embed the metal screen into the fixing frame, and the manufacturing and assembly of different materials increase the complexity of manufacturing production and material cost; in addition, the screen made of metal is easy to deform when not used properly, the deformation of the screen directly influences the airflow direction during use, and the metal material is easy to oxidize or rust in a humid environment for a long time along with use, so that the service life of the product is also shortened.

Furthermore, in some related arts, the capsule chamber and the capsule chamber cover plate of the inhaler of the drug delivery device are two independent components, and the two components are combined together to form a chamber for placing the capsule, but since the two independent components need to be combined in the assembling process, the material and production costs are increased; more importantly, although the two independent components of the capsule chamber and the capsule chamber cover plate are fixedly installed, gaps can be generated between the capsule chamber and the capsule chamber cover plate along with the increase of the use time of a patient or the increase of frequent opening and closing times, the air flow is influenced in use, the ideal effect of the air flow cannot be realized when the medicine is inhaled, and the inhalation efficiency is reduced.

In view of the significant effect of inhalation efficiency on drug delivery efficiency and drug delivery effect of inhalation devices for drug delivery devices, the present application provides an inhalation device which, in embodiments, facilitates inhalation of a drug powder from a capsule enclosing a powdered drug by a patient via the respiratory tract, and in some applications is also referred to as an inhaler, a powder inhaler, a dry powder inhaler, or the like. In use, the capsule may be loaded into a capsule chamber located within the inhaler by the patient prior to use, and the patient may then press a button which actuates a spike to switch the spike from a rest condition to a moving condition to puncture the capsule located within the capsule chamber to cause the capsule to release powdered medicament therein under the influence of negative pressure. Examples of powdered drugs include, but are not limited to: tiotropium Bromide (Tiotropium Bromide), Indacaterol (Indacaterol), and the like can be administered by inhalation through the respiratory tract.

In an exemplary embodiment, referring to fig. 1a, an exploded view of an embodiment of the inhalation device of the present application is shown, wherein the inhalation device comprises a cover 1, a mouthpiece 2, a filter 3, a capsule chamber 4, a piercing assembly 5, and a base 6.

The cover is a member for covering the suction nozzle 2 in a state of being engaged with the base 6, so as to prevent the suction nozzle from being contaminated by the outside.

In the present application, the engagement means a physical engagement manner between two components that can be achieved quickly or conveniently in a fixed state or a separated state by using mechanical deformation (e.g. interference fit) or mechanical interference, in embodiments, for example, an engagement manner of a hook and a slot, an engagement manner of a hook and a hook, or an engagement manner of a protrusion and a groove, an engagement manner of a protrusion and a protrusion, etc., in the present application, the engagement structure between two components will be described according to the mechanical structure of different components in their respective specific implementation states and by using diagrams.

The suction nozzle is a component for being matched with the mouth of a human body to suck medicine powder in a capsule bin into the body, in this embodiment, please refer to fig. 2, which shows a structure of the suction nozzle in this application in one embodiment, the suction channel 22 is integrally formed in the suction nozzle body 21, and in order to facilitate the combination of the suction channel and the capsule bin to form a smooth airflow channel, the bottom of the suction channel is in a tubular structure. The tubular structure may be a circular tube, a square tube, or a tube of other shape, as long as the powder medicine can pass through the tubular structure, but in consideration of inhalation efficiency, a circular tube, that is, a tubular structure having a circular cross section is used in the present embodiment.

In the present application, the integrally molded structure means a structure in which a plurality of components having respective functions are integrated into one body and are not physically separated by a non-destructive means, and is generally integrated at a manufacturing stage, for example, by injection molding with a mold, or integrally molded by means of additive manufacturing (3D printing), or the like.

The filter element is intended to represent the part which has a filtering effect on the contents of the capsule chamber and which facilitates the generation of an efficient suction air flow, and in the embodiment shown the filter element 3 is fitted over the tubular structure of the bottom 22 of the suction channel.

In the present application, the sleeve is arranged to allow a larger diameter component to be sleeved on a smaller diameter component due to the difference in diameter between the two components. Therefore, on the one hand, the filter element needs to perform a filtering function to pass only the medicine powder through the inhalation passage, and on the other hand, the filter element needs to be fixed to the bottom of the inhalation passage 22.

In an embodiment, please refer to fig. 3, which is a schematic structural diagram of the filter element in the present application in an embodiment, as shown in the figure, the filter element 3 includes a sleeve portion 31 and a screen portion 32, the screen portion is used for preventing the fragments of capsule skin generated after the capsule is punctured from entering the suction channel, the sleeve portion is used for being sleeved on the bottom end of the suction channel 22 which is in a tubular structure; in the embodiment, the screen part 32 and the sleeve part 31 are of an integrally formed structure, so that the manufacturing and production are facilitated while the filtering and fixing effects are considered, the step of assembling the screen part and the sleeve part is omitted, the stability of mechanical matching of the combination of the filter member including the screen part and the sleeve part and the suction channel is ensured, and the material management cost is also saved due to the simplified structure; and because screen portion 32 and the design that the portion 31 was established to the cover is the integrated into one piece structure and is the same material, can not lead to along with patient's live time's increase screen portion 32 and cover are established and are produced the deformation between the two of portion 31, and the stability of screen portion 32 structure has ensured that screen portion 32 and capsule storehouse combine the back to form the contact surface that agrees with and do benefit to and form unobstructed airflow channel, and then when having ensured that the patient breathes in, especially the air current when making the inhaled medicine can ensure inhalation efficiency, and then has guaranteed the efficiency of dosing and the effect of dosing.

The capsule magazine is a component for containing capsules and holding the components connected to the piercing assembly, the suction nozzle, and the base, and with continued reference to fig. 1a, the capsule magazine 4 is located below the suction nozzle 2, the capsule magazine includes a cover plate 41 and a cavity 42 integrally formed with the cover plate 41, the cavity 42 is used for containing capsules; in an embodiment, the capsule is placed in the chamber 42 in a substantially upright position, i.e. with one end of the capsule at the bottom of the chamber 42 and one end of the capsule adjacent the top of the chamber 42. The cover plate and the cavity are connected seamlessly through integral molding, the manufacturing cost and the manufacturing difficulty are reduced, and it is emphasized that in the application, the cover plate 41 and the cavity 42 of the capsule bin are of an integral structure, so that the material and production cost are reduced; more importantly, even if along with the increase of patient live time or the increase of frequent number of times that opens and shuts, can not lead to appearing the gap between capsule storehouse and the capsule storehouse apron, and then when having ensured that the patient breathes in, especially the air current when making the inhaled medicine can ensure inhalation efficiency, and then has guaranteed to administer efficiency and the effect of dosing.

The cover plate 41 is located above the cavity 42, and the cover plate 41 is provided with a capsule inlet 411. The capsule inlet 411 is in communication with the chamber 42, and in a use state, a patient places a capsule in the chamber 42 through the capsule inlet 411.

In this application, the communication means spatial communication such that an air stream or an air stream entrained medicament powder can pass through, and in some expressions, the communication is also used as communication, both meaning spatial connection of two physical spaces.

On the other hand, the capsule inlet 411 is correspondingly combined with the screen part 32 so as to be closely combined with the screen part to ensure suction efficiency. The cover plate 41 and the cavity 42 are integrally formed, so that the production and the manufacture are convenient, and the step of assembling the cover plate 41 and the cavity 42 is omitted. Here, it should be noted that the capsule is not necessarily a part of the inhalation device, and in some cases, in order to prevent the powder in the capsule from being affected by moisture, the capsule is taken out only in a use state and put into a capsule chamber to suck the medicine powder in the capsule.

The piercing assembly is a component for piercing a capsule in the capsule compartment. The piercing assembly 5 is located at one side of the capsule chamber 4, the piercing assembly 5 comprises a button member 51 and a piercing needle 52, the button member 51 is movable relative to the capsule chamber, a channel for passing the piercing needle is arranged on a cavity of the capsule chamber 4, and in a use state, when a pressing force is applied to the button member, the button member moves relative to the capsule chamber and simultaneously drives the piercing needle 52 to pierce the capsule in the cavity 42. In this application, relative motion refers to movement of multiple components toward or away from each other. Hence, here, the button member being movable relative to the capsule compartment means that the button member can be moved closer or further away relative to the capsule compartment.

The base is used for accommodating the capsule bin and serving as a part of the air flow channel, and is a dustproof component convenient for a user to hold and operate, the base 6 comprises a base body 61, the interior of the base body 61 is of a hollow structure and is used for accommodating the cavity 42 of the capsule bin and part of the piercing assembly 5.

In the usage of the present embodiment, the cover 1 and the suction nozzle 2 are first opened, a capsule is placed in the capsule inlet 411 of the capsule chamber 4, the capsule enters the cavity 42 from the capsule inlet 411, then the suction nozzle 2 covers the cover plate 41 of the capsule chamber 4 to connect the suction channel 22 with the capsule inlet 411, the button 51 drives the puncture needle 52 to puncture the capsule in the cavity 42 to form a medicine powder outlet on the capsule, and at this time, the user holds the upper part of the suction nozzle with the mouth and inhales air, and a negative pressure is generated in the suction channel, because the diameter of the medicine powder is very small, the medicine powder can leave the capsule through the medicine powder outlet of the capsule under the negative pressure and enter the suction channel 22 through the filter member 3 to be inhaled into the user, and the possibly generated capsule debris is blocked by the filter member 3 and cannot enter the suction channel.

It will be appreciated that the terms "proximal" and "distal" are used herein with respect to the piercing assembly, and thus in the various embodiments of the present application, for ease of description, the side of the inhalation device proximal to the piercing assembly will be defined as proximal and the side distal from the piercing assembly, i.e. the side on which the reference numerals 7, 19, 29, 49, 69 shown in fig. 1a of the present application are located will be distal and the opposite will be proximal. In addition, the terms "front" and "rear" used in the present application are for convenience of explanation with respect to the direction of observation shown in the drawing, and specifically "front" in the present application is defined as a side toward the left side of the direction of the axis 7 with reference to the direction of the piercing member, i.e., a side closer to the direction of observation shown in fig. 1 a; the "rear" in this application is defined as the side to the right of the direction of the axis 7, i.e. the side farther away from the viewing direction of the diagram in fig. 1a, with reference to the direction of the piercing assembly. It will also be appreciated that for ease of description, spatial terms such as "top surface", "bottom surface", etc. are used herein in the context of the inhalation device placement presented in the figures. However, these spatial terms are not intended to be limiting and absolute in that the surgical medical instrument can be used in a variety of orientations and positions in a variety of use scenarios.

In an exemplary embodiment, for ease of use, the lid, mouthpiece, capsule cartridge, and distal side of the base are coaxially connected by a hinge.

In a possible embodiment, continuing to refer to fig. 1a, hinges (19, 29, 49, 69) are provided at the distal sides of the cover 1, the mouthpiece 2, the capsule chamber 4, and the base 6, and the cover 1, the mouthpiece 2, the capsule chamber 4, and the base 6 are hinged together coaxially by a shaft 7 passing through the respective hinges, and as shown in fig. 1a, the cover 1, the mouthpiece 2, the capsule chamber 4, and the base 6 are hinged together by a shaft 7 passing through the respective hinges by a shaft 7; in the use state, the hinged state of the cover body 1, the suction nozzle 2, the capsule chamber 4 and the base 6 is as shown in fig. 1b, and fig. 1b shows the hinged relationship of the cover body, the suction nozzle, the capsule chamber and the base in one embodiment of the present application.

In an exemplary embodiment, in order to avoid that the cover body loosens and cannot protect the suction nozzle in a non-use state, a matched clamping structure is arranged between the cover body and the cover plate, so that the cover body is opened to expose the suction nozzle through the clamping structure in use, and the cover body covers the suction nozzle in non-use.

In one embodiment, the cover plate is provided with a structure matched with the first clamping part on the near side. The specific structure of the first engaging portion may be designed according to the engaging manner of the cover and the cover plate. For example, the first engaging portion may be a protruding structure, and correspondingly, the cover plate has a slope on the proximal side for cooperating with the protruding structure. Alternatively, the first engaging portion may be a hook-shaped structure, and correspondingly, the cover plate has a protrusion structure on the near side thereof for engaging with the hook-shaped structure.

Please refer to fig. 4 to 6, wherein fig. 4 is a schematic structural diagram of a cover in an embodiment of the present application, fig. 5 is a schematic structural diagram of a capsule chamber in an embodiment of the present application, and fig. 6 is a schematic structural diagram of a cover and a capsule chamber in an embodiment of the present application. As shown in fig. 4, a first engaging portion 11 is disposed near the cover, and the first engaging portion 11 is a protruding structure formed on an inner wall surface of the cover near the end. As shown in fig. 5, the cover plate has a bevel 45 on the lower surface of the proximal end. As shown in fig. 6, when the cover is closed, the first engaging portion 11 contacts with the edge of the cover, and when the force is applied, the first engaging portion 11 moves downward and engages with the inclined surface 45 of the cover. When the cover needs to be opened, an upward force is applied to the cover, and the first engaging portion 11 moves upward along the inclined surface 45 and disengages from the cover.

In an embodiment, to facilitate opening the cover during use, please refer to fig. 7, which is a schematic structural view of another embodiment of the cover in the present application, a first anti-slip portion 12 is further disposed on the proximal side of the cover, and in the embodiment shown in fig. 7, the first anti-slip portion may be a plurality of raised or recessed textures formed on the proximal side of the cover to form an anti-slip structure; of course, in other embodiments, the first anti-slip portion may also be an anti-slip structure or material such as a plurality of silicone strips disposed near the cover body.

In an exemplary embodiment, with continued reference to FIG. 2, as shown, the nozzle body 21 includes a nozzle portion 211 and a mounting portion 212. The mounting part 212 is used for being clamped with the cover plate of the capsule bin, so that clamping connection can be achieved between the suction nozzle and the capsule bin, and the filter piece can be tightly attached to the capsule placing opening of the cover plate in a clamping state. As shown in fig. 2, the mouthpiece portion has an approximately flat elliptical structure adapted to the mouth (mouth) of a human body, so that a user can hold the upper portion of the mouthpiece with the mouth, thereby forming a negative pressure in the inhalation passage of the mouthpiece by inhaling in a state where the user's mouth wraps the upper portion of the mouthpiece.

The mounting part 212 and the suction port part 211 are integrally formed, and the mounting part is matched with the cover plate in the using process, and the suction port part is matched with the mouth part of a user, so that the mounting part and the suction port part have different shapes to be more in line with the human engineering. For this purpose, a transition surface is provided between the mounting portion 212 and the suction opening portion 211, in order to transition from the approximately flat, oval configuration of the suction opening portion 211 to a mounting portion configuration that matches the shape of the cover plate.

In an exemplary embodiment, the mouthpiece includes a second snap-fit portion located on the proximal side, and the cover plate includes a third snap-fit portion located on the proximal side, the second snap-fit portion and the third snap-fit portion cooperating at the proximal end to effect a snap-fit between the cover plate and the mouthpiece.

In a possible embodiment, please refer to fig. 2 in combination with fig. 8 and 9, in which fig. 8 is a schematic view of a cover plate in the present application in one embodiment, and fig. 9 is a schematic view of a mouthpiece and a capsule chamber in the present application in a locked state in one embodiment. As shown in fig. 2 and 9, the second engaging portion 23 is a hook structure formed on two sides of the lower surface of the suction nozzle, and as shown in fig. 8 and 9, the third engaging portion 43 is a bayonet located on two sides of the proximal end of the cover plate and corresponding to the hook structure on two sides of the suction nozzle, and the bayonet is a notch formed on two sides of the cover plate. The clamping hook on the lower surface of the suction nozzle slightly deforms under the stress state when contacting with the edge of the notch, and recovers to deform after being positioned below the notch so as to be clamped and fixed below the edge of the notch, so that the suction nozzle is clamped with the capsule bin. The clamping structure in this embodiment can make the filter element mounted at the bottom of the tubular structure of the suction nozzle completely attached to the capsule inlet of the cover plate, so that the powdered medicine can be inhaled into the lung of the patient in a manner of completely following the airflow by the patient.

In one embodiment, with continued reference to fig. 2, in order to facilitate the engagement or disengagement operation of the suction nozzle with the cover plate, the two sides of the near side of the suction nozzle are provided with second anti-slip portions 24, which in the embodiment shown in fig. 2 may be a plurality of raised or depressed textures formed on the two sides of the near side of the suction nozzle to form an anti-slip structure; of course, in other embodiments, the second anti-slip portion may also be an anti-slip structure or material such as a plurality of silicone strips disposed near the suction nozzle.

In an exemplary embodiment, in order to facilitate the communication between the suction channel and the cavity, the bottom end of the tubular structure extends out of the suction nozzle body, the filter element on the tubular structure presses the capsule inlet in the clamped state of the suction nozzle and the cover plate, and further, the contact surface of the filter element and the capsule bin has end surfaces with matched shapes, so that the filter element can be pressed in the capsule inlet and tightly attached to each other in the clamped state of the suction nozzle and the capsule bin, and the leakage of air flow in the use process is avoided.

In one possible embodiment, please refer to fig. 10, which is a schematic structural view of the filter and capsule cartridge of the present application in one embodiment. As shown in the figure, the outer surface of the lower part of the filtering piece is provided with a step-shaped structure formed by transition of the shape of the sleeve part and the shape of the screen part, correspondingly, the upper part of the inner surface of the capsule inlet 411 of the cover plate is provided with a shape matched with the step-shaped structure correspondingly, so that the filtering piece is tightly attached to the capsule inlet, and the screen part is integrally positioned in the capsule inlet 411 when the suction nozzle is clamped with the cover plate, therefore, when medicine powder is inhaled, air flow can better generate an ideal flow direction through the screen part under the action of negative pressure, and the inhalation efficiency of the medicine powder is ensured.

In some embodiments, the suction nozzle is clamped with the third clamping part of the cover plate through the second clamping part, so that the filter element is further tightly attached to the capsule placing opening, the air flow efficiency is higher in use, and the effective inhalation of the medicine powder is ensured.

In an exemplary embodiment, the outer surface of the bottom end of the tubular structure is formed with a first annular nesting portion, and the inner surface of the nesting portion of the filter member is provided with a second annular nesting portion, and the first annular nesting portion is used for being clamped on the second annular nesting portion.

In a possible embodiment, please refer to fig. 11, fig. 12a, fig. 12b in combination with fig. 2, wherein fig. 11 shows a schematic structural view of a filter element in the present application in another embodiment, fig. 12a shows a schematic structural view of a filter element and a mouthpiece in the present application in one embodiment, and fig. 12b shows a cross-sectional view of a filter element and a mouthpiece in the present application in one embodiment. As shown in fig. 2, the inner surface of the sleeve portion of the filter member has a ring of ribs 221, and correspondingly, as shown in fig. 11, the outer surface of the bottom end of the tubular structure has an annular groove 311 matching with the ribs, so that when the filter member 3 is mounted on the tubular structure of the suction nozzle 2, the ribs 221 can be clamped in the annular groove 311, as shown in fig. 12 a. Figure 12b shows a schematic cross-sectional view after the filter element 3 has been mounted on the tubular structure.

It should be noted that, although the embodiment is exemplified by the matching structure of the protruding rib and the annular groove, the practical application is not limited thereto as long as the clamping effect of the filter element and the tubular structure can be achieved, for example, in other embodiments, one circle of the protruding rib in the above embodiments may be replaced by a plurality of protruding blocks formed on the inner surface of the filter element sleeving portion, and the annular groove may be replaced by a plurality of recessed holes formed on the outer surface of the tubular structure and corresponding to the plurality of protruding blocks. Moreover, the positions of the protruding rib and the annular groove, or the positions of the protruding block and the concave hole may also be interchanged, for example, the inner surface of the sleeving part of the filtering member may be the annular groove and the outer surface of the bottom end of the tubular structure is a circle of protruding rib, or the inner surface of the sleeving part of the filtering member may be a plurality of concave holes and the outer surface of the bottom end of the tubular structure is a plurality of corresponding protruding blocks, etc., which are not described herein again.

In this embodiment, the fixing structure between the first annular engaging portion and the second annular engaging portion can firmly combine the filtering member with the tubular structure, thereby ensuring the use efficiency and safety.

In an exemplary embodiment, please refer to fig. 13, which is a schematic structural diagram of a filter element in the present application in yet another embodiment. As shown in the figure, in order to ensure the inhalation efficiency of the medicine powder, the thickness t of the screen part 32 is 0.35 to 0.51mm, and the thickness includes the distance from the lowest point to the highest point of the screen part. In addition, in order to ensure the suction efficiency while ensuring the filtering effect, the mesh number of the screen part should also be designed reasonably. It will be appreciated that the mesh number includes the number of mesh openings on the screen section and that the size of the mesh openings directly constitutes a diameter limitation of objects that can pass through the screen section. The mesh number is therefore dependent on the size of the filter pack and on the air flow, and in various embodiments is approximately 20 to 30, for example 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30. In the present embodiment, the thickness t of the screen part 32 is 0.35 to 0.51mm, the cross-sectional diameter of the filter member is 11 to 12mm, and the number of the meshes is 21.

The filter piece in this application can borrow the size shape and the surface curvature of borrowing the screen cloth aperture to control the distribution of flowing air current, also can avoid the patient to inhale the cracked capsule shell of large fragment when vigorously absorbing medicine powder simultaneously.

In some embodiments, the integrally formed filter element may be a polymer structure material including, but not limited to, ABS (Acrylonitrile Butadiene Styrene plastic), PC (Polycarbonate), PA (Polyamide), and the like. In this embodiment, the filter member is made of ABS material, which prevents deformation due to improper use, and combines the properties of three components, in which acrylonitrile has high hardness and strength, heat resistance and corrosion resistance, since ABS material is a terpolymer of acrylonitrile (a) -butadiene (B) -styrene (S); butadiene has impact resistance and toughness; the styrene has high surface glossiness, easy coloring property and easy processing property, so that the filter piece has high strength, good toughness, low cost and easy processing and forming; and the material with the high molecular structure can not deform or rust in a damp environment, so that the stability of the screen structure is ensured.

In an exemplary embodiment, please refer to fig. 15, which shows a schematic structural view (bottom view) of the capsule cartridge of the present application in an embodiment, as shown in the figure, the cover plate includes side wings 412 at both sides, and fourth engaging portions 4121 are provided on the side wings 412, where the fourth engaging portions are protrusions at both sides of the side wings. Referring to fig. 14a, which is an enlarged partial structure view of the base of the present application in one embodiment, the upper edges of the two sides of the base 6 are provided with fifth engaging portions 62 corresponding to the fourth engaging portions 4121. Please refer to fig. 14b, which is an enlarged view of a portion a of fig. 14a, wherein, for the convenience of clearly showing the structure of the fifth engaging portion, the fifth engaging portion 62 is rotated by a certain angle on the basis of fig. 14a to obtain the state shown in fig. 14 b. As shown, the fifth engaging portion includes a slope 621 and a slot 622 located below the slope 621. When the cover plate is engaged, the fourth engaging portion 4121 is downward contacting the inclined surface 621 and engaged with the engaging groove 622, thereby engaging the capsule chamber with the base.

In one embodiment, with continued reference to fig. 14a, the upper edges of the two sides of the seat 61 of the base 6 have inward folded edges 611, when the cover is mounted on the seat, the side wings 412 on the two sides of the cover abut against the folded edges 611, so as to prevent the cover from being dislocated, and on the other hand, provide support for the front and rear sides of the base, and increase the compressive strength of the base in the front and rear directions.

In an exemplary embodiment, in order to form an air flow channel within the inhalation device, the capsule chamber needs to be in communication with the inhalation channel of the mouthpiece, and an additional channel for communicating with the outside air from which air can be introduced after the mouthpiece is held by the user's mouth. Because the capsule storehouse is through the apron block on the base, for this reason, be equipped with first air inlet on the apron, when producing the negative pressure in inhaling the passageway, do benefit to the outside air via first air inlet gets into the inner space of base provides the outside air for the cavity in capsule storehouse.

In one embodiment, to facilitate the forming process, the first air inlet may be a notch formed on the cover plate profile. For example, with continued reference to fig. 15, as shown, the contours on the distal sides of the cover plate are narrower relative to the contours of the cover plate side wings, thereby forming notches 413. After the cover is fastened to the base, the side wings are fastened to the upper portion of the base body of the base, and a gap is formed between the base body of the base and the recess 413 to serve as an inlet passage for external air. It should be noted that although the embodiment is exemplified by the notches formed on the two distal sides of the cover plate, other configurations are also possible in practical applications, as long as the suction nozzle can be covered on the capsule chamber to expose the first air inlet so that the air flow can enter from the first air inlet during use.

In an exemplary embodiment, the capsule chamber 42 comprises a main chamber having a diameter greater than the transverse cross-sectional diameter of the capsule and less than the longitudinal cross-sectional diameter of the capsule in order to maintain the capsule in an upright position in the main chamber for piercing by the piercing assembly. Please refer to fig. 17, which is a schematic structural diagram of a capsule cartridge and a capsule according to an embodiment of the present application. As shown, the lateral diameter D of the primary chamber 421₁Larger than the transverse cross-sectional diameter D of the capsule 8₃So as to enable the capsule 8 to enter the main chamber and the transversal diameter D of the main chamber 421₁Smaller than the longitudinal cross-sectional diameter D of the capsule 8₂So as to keep the capsule 8 in an upright condition in the main chamber 421. In a possible embodiment, the ratio of the transverse diameter to the longitudinal diameter of the main chamber is between 1:2 and 1: 3.

It should be noted that, in the present embodiment, there is no limitation on the size of the capsule, the capsule may be any size of capsule, and the diameter of the main chamber may be configured to match the size of the capsule in order to adapt to the size of the capsule. The size of the capsule is usually related to the amount of the drug to be administered, i.e. when the amount of powder is large, the capsule size is designed to be large, and when the amount of powder is small, the capsule size is designed to be small.

In one embodiment, the capsule 8 will generally have a transverse cross-sectional diameter D of the capsule, taking into account the existing powder medicament dosage, such as tiotropium bromide, indacaterol, etc., as mentioned above₃The design is 5-6 mm, and the height, namely the diameter D2 of the longitudinal section, is 15-16 mm. In some embodiments, since the capsule is assembled by two shells, please refer to fig. 26, which shows a structural schematic view of the capsule in an embodiment of the present application, the outer shell of the capsule is assembled by an upper shell 8a and a lower shell 8b, and the sum of the longitudinal cross-sectional diameters of the upper shell 8a and the lower shell 8b is usually designed to be 16-17 mm.

In an exemplary embodiment, with continued reference to fig. 17, the bottom of the capsule chamber 42 is provided with a sub-chamber 422 in communication with the main chamber 421, the sub-chamber 422 being used to provide an air intake passage for the main chamber 421. The bottom end of the sub-chamber 422 is provided with a second air inlet, so that the capsule bin can be communicated with the inner space of the base body of the base after being clamped on the base body of the base to form an air inlet channel, and a gap is formed between the second air inlet and the bottom surface of the base. And, in order not to drop the capsule from the main chamber to the sub-chamber, the diameter D of the sub-chamber₄Smaller than the transverse cross-sectional diameter D of the capsule₃。

In an exemplary embodiment, the chamber of the capsule cartridge comprises a mounting structure cooperating with the piercing assembly such that the piercing assembly remains connected to the capsule cartridge in the non-use state and is movable relative to the capsule cartridge to pierce a capsule in the capsule cartridge in the use state. The mounting structure comprises a mounting plate, the mounting plate and the cavity can be of an integrated structure, and a clamping groove and a tube part, wherein the clamping groove is used for enabling the button part of the piercing assembly to move relative to the capsule bin and not to be separated from the capsule bin, and the tube part is used for limiting the piercing direction of the piercing needle of the piercing assembly. In some embodiments, in order to force the piercing assembly to automatically return to the initial position after piercing the capsule during use, the piercing assembly further comprises a return mechanism, such as, but not limited to, a spring or other elastic element; and, the position department that corresponds canceling release mechanical system on the mounting panel is equipped with the portion of leaning on to play the effect that the position of restriction canceling release mechanical system guaranteed its normal work. Wherein, the arrangement positions of the clamping groove, the abutting part and the tube part can be determined according to the structure of the piercing assembly. For example, when the piercing assembly is movably connected with the mounting plate through the left side and the right side of the button member, the piercing assembly is matched with the capsule in the capsule bin through the two piercing needles arranged up and down, and the reset mechanism is arranged between the two piercing needles, the clamping grooves can be correspondingly arranged on the left side and the right side of the mounting plate, the abutting portions can be located between the symmetrical clamping grooves, and the two pipe portions corresponding to the two piercing needles can be respectively located on the upper side and the lower side of the abutting portions.

In an exemplary embodiment, the capsule chamber is further provided with a first stop portion at a position facing the button member for limiting a movement position of the piercing assembly relative to the capsule chamber. The first stopping portion can be positioned on the main chamber and the auxiliary chamber, the length of the first stopping portion is configured to match the ideal travel range of the button member, namely, the first stopping portion stops continuously when the first stopping portion is touched during the pressing process of the button member, and the puncture needle can puncture the capsule just and can not puncture the capsule excessively. Therefore, when the first stopper is located on the secondary chamber, since the lateral diameter of the secondary chamber is smaller than that of the primary chamber, the length of the first stopper located on the secondary chamber should be slightly greater than that of the first stopper located on the primary chamber. In embodiments where the capsule magazine comprises a mounting plate, the first stop may also be provided on the mounting plate.

In one embodiment, please refer to fig. 16, which is a schematic structural diagram of the piercing assembly and capsule cartridge in the present application in another embodiment, as shown in the drawing, a first stopping portion 423 is disposed on a side of the lower portion of the main chamber facing the button member, the first stopping portion 423 is located on the mounting plate, when the button member is pressed, the lower portion of the button member abuts against the first stopping portion 423 and cannot move further to the distal end, thereby avoiding excessive piercing.

In one embodiment, the number of the puncture needles in the puncture assembly can be one or more, the proximal end of each puncture needle is fixedly connected with the button member, and the positions and the number of the tube parts on the mounting plate correspond to the positions and the number of the puncture needles. After mounting the piercing assembly to the capsule magazine, the piercing needles may be arranged in corresponding tube portions on the mounting plate, i.e. distal to each piercing needle in each corresponding tube portion, and when a force is applied to the button member, the piercing needles may be moved along the tube portions to pierce a capsule located in the chamber after reaching the chamber.

The puncture needle is a component for puncturing the capsule, and the puncture needle is not necessarily an elongated structure, but may also be a thin sheet-like structure. For example, the lancet can also be designed flat like a blade structure, and correspondingly, the tube portion of the mounting plate can be adapted to a flat tube structure to allow the blade-like lancet to move within its tube, in which case the lancet cuts the capsule in a transverse manner, either as a large opening or directly in half or more, when it pierces the capsule.

In a possible embodiment, to ensure that each needle is functional and to increase the efficiency of the escape of the medicament, the spacing between the two needles that are furthest from each other of the needles should be less than the height of the capsule and greater than half the height of the capsule. For example, when the number of the puncture needles is two, the distance between the two puncture needles should be less than the height of the capsule and more than half of the height of the capsule, for example, when the puncture needles puncture the capsule, the wall breaking position of the capsule is just at the transition position between the main part and the top part at the two ends of the capsule. In this embodiment, the distance between the perforations formed in the capsule after the capsule is pierced by the piercing needles is 3/5-4/5 of the height of the assembled capsule.

The arrangement of the needles can be configured according to the placement direction of the capsule and the number of the needles. For example, when the needles are one, they can be arranged at a position corresponding to the centre of the capsule; when the number of the pricking pins is two and the capsule is vertically placed, the two pricking pins can be arranged up and down; when the number of the pricking pins is two and the capsule is transversely placed, the two pricking pins can be arranged left and right; when the number of the felting needles is three or more, the felting needles can be on the same straight line or not. It should be understood that the arrangement of the needles is merely exemplary and not restrictive, and can be adjusted according to specific requirements in practical applications, and will not be described herein.

In an exemplary embodiment, referring to fig. 18, which shows a schematic structural view of the lancet in one embodiment of the present application, as shown in the figure, in order to facilitate the lancet to puncture the capsule and avoid the generation of capsule debris as much as possible, the tip of the lancet 52 has a bevel, and the position of the lancet tip is eccentric, i.e., the tip point of the lancet tip and the axial center of the lancet are not in a straight line. When the capsule shell is pierced, fragments at the broken part of the capsule are not easy to fall off from the capsule, thereby fundamentally avoiding the generation of the fragments of the capsule and ensuring the safety and the comfort of the inhalation process. At the same time, the structure can also effectively release the powder medicine during the inhalation process.

In one embodiment, in order to facilitate the movable connection of the piercing assembly to the mounting plate, the button member of the piercing assembly includes a pressing portion and a movable connecting portion, the pressing portion and the movable connecting portion are of an integral structure, and a distal end of the movable connecting portion has a limiting portion cooperating with the clamping groove, so that the piercing assembly can move relative to the capsule chamber without departing from the mounting plate.

In a possible implementation manner, please refer to fig. 19, which is a schematic structural diagram of the button in the present application in an embodiment, as shown in fig. 19, the button 51 includes a pressing portion 510 and a movable connecting portion, which are integrally formed, in this embodiment, the movable connecting portion is an extension arm 511 extending distally from two sides of the button 51, a distal end of the extension arm 511 is provided with a convex hook portion 512 as a limiting portion, and the hook portion and the extension arm are integrally formed.

Correspondingly, as shown in fig. 9, two slots 441 are disposed on the mounting plate 44, the positions of the two slots 441 correspond to the position of the extension arm 511, and the width of the slots 441 is slightly greater than the width of the extension arm 511, so that the extension arm 511 can slide in the slots. Meanwhile, the width of the clamping hook part 512 added with the extension arm 511 is larger than that of the clamping groove 441, so that the extension arm cannot be separated from the mounting plate when sliding in the clamping groove 441.

In some cases, referring to fig. 20a and 20b in combination with fig. 9, fig. 20a is a schematic structural view of a button member in the present application in another embodiment, fig. 20b is an enlarged view of a portion G in fig. 20a, and as shown, to further facilitate the assembly of the puncturing assembly 5 to the mounting plate 44, the hooking portion 512 has a slope s, a distance between the slope s and the extension arm 511 increases from the far side to the near side, and a minimum width h at the slope is_e1Is less than the width h of the clamping groove 441_gMaximum width h at slope_e2Is slightly larger than the width h of the clamping groove 441_g. Here, as shown in fig. 20b, the minimum width h at the slope_e1Including the combined width of the distal side of the hook and the distal side of the extension arm, the maximum width h at the bevel_e2Including the combined width of the proximal side of the hook and the proximal side of the extension arm. Based on this structural design, when installed, the distal side of the extension arm 511 is aligned with the slot 441 in the mounting plate 44 due to the minimum width h at the bevel_e1Is less than the width h of the clamping groove 441_gThe extension arm 511 can pass through the clamping groove, the inclined surface is gradually attached to the edge of the clamping groove 441 along with the increase of the width of the inclined surface, the clamping groove 441 applies pressure to the inclined surface after force application is continued, the extension arm is pressed to generate slight elastic deformation, and finally after the whole clamping hook part 512 passes through the clamping groove 441, the inclined surface returns to the initial state and limits the piercing component through the clamping hook part 512, so that the piercing component can move relative to the capsule bin without separating from the mounting plate.

It should be noted that, the structure of the limiting portion in this embodiment is only an example and not a limitation, and in practical applications, the limiting portion may be other structures as long as the button can pass through the mounting plate and limit the button thereon, for example, the hook portion in fig. 20a and 20b may be replaced by a plurality of small hooks distributed on the far side of the extension arm as the limiting portion.

Referring to fig. 21 in combination with fig. 9, fig. 21 is a schematic structural view of a puncturing assembly in another embodiment of the present invention, in this embodiment, referring to fig. 21, the number of the puncturing needles 52 is two and is arranged up and down, and the two puncturing needles 52 are located between the front and rear extending arms 511 and are fixed on the button 51 through the proximal side. Referring to fig. 9, two tube portions 443 are provided on the mounting plate 44 of the capsule magazine corresponding to the two piercing needles, so that the two tube portions 443 are also arranged up and down on the mounting plate 44, the tube portions 443 being in communication with the chamber 42 of the capsule magazine 4. After mounting the piercing assembly 5 to the capsule magazine, the lancet needles are arranged through the tube portions 443, i.e. the lancet needles 52 are located distally in both tube portions 443, and when a force is applied to the button member 51, the lancet needles 52 can be moved along the tube portions 443 to pierce the capsules located in the chamber 42 after extending into the chamber. By penetrating is meant that the lancet has a diameter that is smaller than the diameter of the tube portion so as to pass through the hollow portion of the tube portion, and that a portion of the lancet, such as the distal end of the lancet, can be located within the tube portion in an initial state (i.e., in a state in which no force is applied to operate the button member) in order to facilitate movement of the lancet along the tube portion.

In order to force the piercing assembly to automatically return to its initial position after piercing the capsule during use, the piercing assembly further comprises a return mechanism 53, the return mechanism 53 including, by way of example and not limitation, a spring or the like. And, the mounting plate 44 is provided with an abutting portion 442 at a position corresponding to the reset mechanism 53, so as to limit the position of the reset mechanism and ensure the normal operation thereof. Here, the abutting portion 422 may be a mounting seat for fixing the return mechanism 53, for example, when the return mechanism is a spring, the abutting portion 422 may be a spring mounting seat protruding toward the proximal side so as to sleeve the distal side of the spring on the mounting seat. In the embodiment shown in fig. 9, the abutting portion 442 is disposed at the center of the mounting plate, i.e., between the left and right card slots 441 and between the upper and lower tube portions 443, in consideration of space utilization efficiency of the mounting plate. Of course, in other embodiments, the reset mechanism may be disposed at other positions as long as the button member can be reset after being stressed. The structure of the abutting portion may also be designed according to actual requirements, and is not limited to the spring mounting seat protruding to the near side, for example, the abutting portion may also be a recess formed on the surface of the mounting plate, so as to mount the return mechanism therein, and the like.

It should be noted that, in the above embodiment, the capsule chamber is designed to be a vertical structure, so that the capsule is placed in the capsule chamber in a vertical state. In other possible embodiments, the capsule magazine may also be designed in a transverse configuration so that the capsule is placed in the capsule magazine in a transverse position, and accordingly the piercing needles in the piercing assembly and the tube portion on the mounting plate are configured to be arranged side to side so as to match the placement direction of the capsule for piercing the capsule.

In one embodiment, referring to fig. 22, which is a schematic structural view of the button member of the present application in one embodiment, as shown in the figure, in order to press the button portion, a third slide prevention portion 513 is disposed on an outer surface of the pressing portion, so that when a force is applied through the button member 51, the force can be transmitted more effectively. Wherein, considering that a user generally presses the button member with a thumb during use, the third slide prevention portion is designed as a concave structure having an arc-shaped outer peripheral surface as shown in fig. 22 to fit the finger shape of the human body. It should be understood that the third anti-slip portion in the present embodiment is only an example and not a limitation, and in practical applications, the third anti-slip portion may also be a texture of several protrusions or depressions formed on the proximal side of the cap body to form an anti-slip structure; of course, in other embodiments, the third anti-slip portion may be an anti-slip structure or material such as a plurality of silicone strips provided on the proximal side of the lid body.

In an exemplary embodiment, to further ensure the stability of the movement of the puncture needle when the puncture assembly punctures the capsule, corresponding guiding structures are provided on the cover plate and the button member. The guide structure is a structure which enables the button piece to keep linear motion under a stressed state so as to drive the puncture needle to move more stably and avoid the puncture needle from generating resistance feeling due to the unstable moving position of the button piece when the puncture needle is punctured or pressed.

Because the consistency and stability of the puncture direction of the puncture needle are particularly important for the inhalation device when the puncture needle punctures the capsule (or breaks the wall of the capsule), in the embodiment of the application, the cover plate is provided with a first guide part corresponding to one side of the button member, namely the lower surface of the cover plate near the side, and the button member is provided with a second guide part matched with the first guide part, so that when the button member moves towards the capsule bin, two needles can be guided to stably keep moving on a horizontal line in the process of pushing the button to puncture the capsule, the shapes and sizes of holes on the capsule shell of the capsule are kept relatively consistent after the capsule is punctured by the needles, and the medicine powder in the capsule bin can smoothly escape under the action of negative pressure, and the phenomenon that the capsule shell is broken due to the shaking of the puncture needle is avoided.

The first guide part and the second guide part can comprise a matching form of a guide rail and a guide groove, a matching form of a limiting groove and a guide block and the like. For example, the first guide portion may include a guide rail formed on a lower surface of the proximal side of the cover plate, and the second guide portion includes a guide groove provided on an upper surface of the button member, or the second guide portion may include a guide rail formed on a lower surface of the proximal side of the cover plate, and the first guide portion includes a guide groove provided on an upper surface of the button member.

In one embodiment, please refer to fig. 23, which is a schematic structural view of the piercing assembly and capsule cartridge of the present application in another embodiment. As shown in the figure, two elongated guide rails 415 are disposed on the lower surface of the cover plate near the side, correspondingly, an upward extending arm is disposed on the upper side of the button member, a guide groove 514 is disposed on the extending arm at a position corresponding to the guide rail 415, and when a force is applied to the button member, the guide groove 514 on the button member can move along the guide rail 415 of the cover plate, so as to better control the moving direction of the button member, and drive the puncture needle to puncture the capsule in the capsule chamber more accurately and efficiently. In another embodiment, the positions of the guide rail and the guide groove can be interchanged, that is, the guide rail can be located on the button member and the guide groove is located on the lower surface of the cover plate, and the same technical effects can be achieved.

In another embodiment, two sides of the lower surface of the near side of the cover plate can be provided with limit blocks, the movable connecting part of the button part can extend upwards to be in contact with the cover plate, and the movable connecting parts on two sides of the button part are positioned between the two limit blocks on the cover plate and abut against the limit blocks, so that when force is applied to the button part, the movable connecting part of the button part can stably move under the limit action of the limit blocks, and the puncture needle is driven to puncture the capsule in the capsule bin more accurately and efficiently.

It should be noted that the structures of the first guiding portion and the second guiding portion in the above embodiments are only examples and not limitations, and in practical applications, it is only necessary to be able to guide the button member to keep it moving stably; in addition, the arrangement positions of the first guide portion and the second guide portion can also be adjusted according to specific requirements, which is not described herein again.

In an exemplary embodiment, to avoid excessive piercing of the capsule when the button member is pressed, the cover plate further includes a third stopping portion, which is a stopping structure located on the cover plate and used for limiting the moving range of the button member relative to the cover plate, and includes, but is not limited to, a stopper, a baffle, and the like. In the present embodiment, please refer to fig. 23, as shown in the figure, the third stopping portion is a protrusion 416 formed at the distal end of the first guiding portion, so that when the button member moves along the cover plate, the button member is limited by the protrusion after abutting against the protrusion, and cannot be further pushed, thereby limiting the moving position of the piercing assembly relative to the capsule chamber.

In an exemplary embodiment, continuing to refer to fig. 14a, an opening 613 is provided at the proximal end of the base to provide mounting and movement space for the piercing assembly through the opening 613 after the capsule cartridge is assembled into the base, so that the piercing assembly can move along the capsule cartridge under force.

In an embodiment, a second stopping portion may be further disposed on the seat body of the base, and the second stopping portion is a stopping structure located on the base and used for limiting a moving range of the button relative to the base, and includes, but is not limited to, a stopper, a baffle, and the like. In this embodiment, with continuing reference to fig. 14a, a baffle 612 is disposed in the base body of the base and below the proximal side, the baffle 612 has a stop 6121 protruding upward on the distal side, where the portion of the baffle other than the stop is defined as a baffle main body 6120, the height of the baffle main body 6120 is lower than the lower surface of the button so as to allow the button to pass through, and the height of the stop 6121 is higher than the lower surface of the button so as not to allow the button to pass through. Thus, when the button member is pressed, the button member can move along the top surface of the baffle plate main body 6120 towards the capsule chamber, and when the button member touches the stop block 6121, the button member cannot move towards the capsule chamber, so that the depth of the puncture needle penetrating into the capsule is controlled by limiting the movement position of the puncture assembly relative to the capsule chamber.

In an exemplary embodiment, in order to observe the capsule state in the capsule chamber during operation, the base further comprises a transparent window, the transparent window is installed on the base body, and meanwhile, the chamber of the capsule chamber is also made of transparent materials, so that the capsule state in the chamber can be observed through the transparent window and the transparent chamber during use, and the wall breaking state of the capsule can be observed during puncturing.

The position of the transparent window arranged on the base can be designed according to actual requirements, for example, the transparent window can be arranged on the front side and the rear side of the base.

In an embodiment, please refer to fig. 24, which is a schematic structural diagram of the base in the present application in another embodiment, as shown in the figure, to facilitate the installation of the transparent window and the base, the transparent window 63 may be configured as a U-shaped structure, correspondingly, the bottom surface of the seat body 61 of the base is provided with mounting grooves extending to the front and rear sides of the seat body, two long arms 63a and 63b of the U-shaped structure respectively correspond to the mounting grooves of the front and rear portions of the seat body 61, and the bottom plate 63c of the U-shaped structure corresponds to the mounting groove of the bottom surface portion of the seat body 61, so as to install the transparent window of the U-shaped structure on the base 6. In an embodiment, the U-shaped transparent window 63 is mounted on the base 6 by heat melting or bonding; alternatively, the U-shaped transparent window 63 may be integrally formed with the base 6.

In other embodiments, the base may also be made of a transparent material or a partially transparent material (e.g., the window is made of a transparent material), so that the state of the capsule in the cavity and the wall-broken state of the capsule during the puncturing process can be observed through the transparent base and the transparent cavity.

In an exemplary embodiment, please refer to fig. 25, which is a schematic structural diagram of the base in the present application in another embodiment, and for facilitating the holding in use, a fourth anti-slip portion 64 is further disposed on the far side of the base, wherein the fourth anti-slip portion may be a plurality of raised or recessed textures formed on the near side of the cover body to conform to the ergonomics or the holding habit of the user, or may be a plurality of anti-slip structures such as silicon strips disposed on the far side of the base. Further, the base is configured to approximate a rectangular parallelepiped structure, which is more convenient to hold during use and more comfortable for a user to apply force.

In an exemplary embodiment, referring to fig. 27, which shows a schematic structural view of an inhalation device of the present application in a further embodiment, as shown, the inhalation device comprises a cover body 1, a mouthpiece 2, a filter member 3, a capsule bin 4, a piercing member 5, and a base 6, wherein the cover body 1, the mouthpiece 2, the capsule bin 4, and the base 6 are coaxially hinged at the far side. And in order to facilitate the use of operators, the near side of the cover body, the near side of the suction nozzle, the outer surface of the pressing part of the button part and the far side of the seat body are respectively provided with an anti-skid part.

The cover 1 and the cover 41 have corresponding engaging structures on their proximal sides, so that the cover can be opened or closed with respect to the base in a state where the base and the cover are engaged. The suction nozzle body 21 of the suction nozzle 2 is used for being matched with the mouth of a human body so that a user can suck powder medicine into a respiratory tract through the suction nozzle, the bottom of a suction channel of the suction nozzle 2 is of a tubular structure, the filter element 3 is sleeved on the tubular structure, and the sleeved part 31 of the filter element 3 is matched with a groove on the outer surface of the lower part of the suction channel 22 through a circle of convex ribs on the inner surface, so that the filter element 3 is clamped at the bottom of the suction channel. Moreover, the sleeve part 31 and the screen part 32 of the filter element are of an integral structure, so that the filter element is convenient to manufacture and produce while realizing the functions of filtering and fixing, and the step of assembling the screen part and the sleeve part is omitted.

The capsule chamber 4 is located below the suction nozzle 2, and comprises an integrated cover plate 41 and a cavity 42, wherein the cavity 42 is divided into a main cavity 421 and a sub-cavity 422. The capsule can be placed into the chamber through the capsule placement port on the cover plate, and since the diameter of the main chamber is larger than the transverse cross-sectional diameter of the capsule and smaller than the longitudinal cross-sectional diameter of the capsule, and the diameter of the sub-chamber is smaller than the transverse cross-sectional diameter of the capsule, the capsule remains in a vertical state in the main chamber so as to be pierced by the piercing assembly. The upper part of the sub-chamber is communicated with the main chamber, the lower part of the sub-chamber is also provided with an opening, and a gap is arranged between the sub-chamber and the inner bottom of the base, so that external air flow can enter the capsule bin. Corresponding clamping structures are arranged on the near sides of the suction nozzle 2 and the cover plate 41, so that the suction nozzle and the cover plate can be clamped and fixed, and notches are arranged on the two far sides of the cover plate to provide an air inlet after the suction nozzle and the cover plate are installed on a base. The capsule inlet and the filter piece have end faces with matched shapes, so that the filter piece can be pressed in the capsule inlet and tightly attached to the capsule inlet in a pressing mode under the clamping state of the suction nozzle and the capsule bin, and air flow leakage is avoided.

The piercing assembly 5 is held in positional relationship with the capsule magazine 4 by a mounting plate 44. The piercing assembly 5 includes a button member 51, two piercing pins 52 and a reset mechanism 53. The button 51 includes a pressing portion 510 and movable connecting portions 511 located at two sides of a distal end of the pressing portion, a slot 441 is correspondingly disposed at a position on the mounting plate corresponding to the movable connecting portions, and a limiting portion on the movable connecting portion can limit the button in the slot so that the button can move along the slot but cannot be separated from the slot. The reset mechanism is located between the movable connecting parts at two sides, an abutting part 442 is arranged on the mounting plate at a position corresponding to the reset mechanism, one side of the reset mechanism 53 is connected with the button piece 51, and the other side of the reset mechanism is arranged on the abutting part 442 so as to help the button piece return to the initial position after the button piece is pressed. The near ends of the two puncture needles are respectively fixed on the button part and are arranged up and down, and the positions corresponding to the two puncture needles on the mounting plate are respectively provided with a tube part correspondingly, so that after the puncture assembly is mounted on the mounting plate of the capsule bin, the two puncture needles are respectively positioned in the respective corresponding tube parts, and the tube parts are communicated with the main chamber, so that when the button part is pressed, the button part can drive the puncture needles to pass through the tube parts to the main chamber to puncture the capsule.

In order to better control the movement direction of the button member to drive the puncture needle to puncture the capsule in the capsule bin more accurately and efficiently, two slender guide rails are arranged on the lower surface of the near side of the cover plate, correspondingly, an upward extending arm is arranged on the upper side of the button member, a guide groove is arranged on the extending arm corresponding to the guide rail, when force is applied to the button member, the guide groove on the button member can move along the guide rail of the cover plate, so that the phenomenon that the puncture needle punctures unevenly or resistance feeling is generated due to unstable moving position of the button member when the puncture is carried out is avoided, more importantly, the guide design of the button member can lead the two needles to stably keep moving on a horizontal line in the capsule pushing and puncturing process, so as to ensure that the shapes and sizes of holes on the capsule shell of the capsule after the capsule is punctured by the needles are relatively consistent, and not only under the action of negative pressure, the medicine powder in the capsule bin can smoothly escape, and the scraps of the capsule skin generated in the process of puncturing the capsule due to the shaking of the puncture needle can be avoided.

Further, in order to avoid excessive puncture of the capsule when the button member is pressed, a third stopping portion is further arranged at the far end of the guide rail, and when the button member moves along the cover plate and abuts against the protruding block, the button member cannot be pushed forward continuously under the limiting effect of the protruding block, so that the movement position of the puncture assembly relative to the capsule bin is limited. Meanwhile, a baffle plate is arranged below the near side in the base body of the base, the baffle plate is provided with a stop block protruding upwards at the far side, the button piece is allowed to pass through as the height of the baffle plate main body is lower than the lower surface of the button piece, and the button piece is not allowed to pass through as the height of the stop block is higher than the lower surface of the button piece. Therefore, when the button member is pressed, the button member can move along the top surface of the baffle plate main body towards the capsule chamber, and when the button member touches the stop block, the button member cannot move towards the capsule chamber, so that the depth of the puncture needle penetrating into the capsule is controlled by limiting the movement position of the puncture assembly relative to the capsule chamber.

The base 6 comprises a base body 61, the base body 61 is hollow and is used for accommodating the cavity 42 of the capsule chamber, and two sides of the cover plate 41 of the capsule chamber 4 and two sides of the upper part of the base body 61 are provided with corresponding clamping structures, so that the capsule chamber can be disassembled from the base. An opening 613 is provided at the proximal side of the seat body 61 so that the piercing member can move along the capsule chamber under a force application state by providing a moving space for the piercing member through the opening 613 after the capsule chamber is assembled into the base.

The base still includes the transparent window 63 of U type, and the mounting groove that extends to both sides around the pedestal is seted up to the pedestal 61 bottom surface of base, and transparent window 63 is installed on pedestal 61, and the cavity in capsule storehouse also is transparent material simultaneously to can observe the capsule state in the cavity through transparent window and transparent cavity when using.

When the capsule puncturing device is used, firstly, the cover body 1 and the suction nozzle 2 are opened, a capsule is placed into the main cavity 421 through the capsule placing opening 411 on the cover plate 41, then the suction nozzle 2 and the cover body 1 are closed, the button part is pressed, the button part drives the puncturing needle to enter the main cavity along the tube part to puncture the capsule, and at the moment, the capsule is under the action of the guide rail and the guide groove between the cover plate and the button part, so that the pressing process is smoother, and on the other hand, the capsule is under the action of the third stopping part on the guide rail and the second stopping part on the base, so that the puncturing assembly is prevented from being punctured excessively. When the user cancels the force application to the button piece, the reset mechanism resets the button piece to the initial position.

Then, the user opens the cover body and sucks air with the mouth portion over the suction nozzle. Referring to fig. 28, which is a schematic view of the air flow direction of the inhalation device in one embodiment of the present application, as shown in the figure, under the action of the negative pressure generated in the mouthpiece 2, the external air flow enters the base through the gap (i.e. the first air inlet) between the cover plate and the base, and enters the main chamber 421 through the bottom of the sub-chamber 422, due to the structural design of the screen portion, an air flow facilitating the escape of the powder is generated in the main chamber, the powder enters the inhalation channel of the mouthpiece 2 through the screen portion, and the capsule debris is blocked outside the screen portion, so that the powder in the inhalation channel is inhaled into the user.

And finally, opening the suction nozzle to clean the capsule shell, the scraps and the like in the capsule bin, and/or cleaning and airing the capsule shell, the scraps and the like, and then covering the suction nozzle and the cover body for subsequent use.

Suction device in this application adopts the filtration piece and the capsule storehouse of integral type design, has reduced the degree of difficulty and the cost of production when guaranteeing the result of use. And in the inhalation device of this application, filter and put into the mouth with the capsule and closely laminate, and when suction nozzle and lid board are laminated, the whole capsule storehouse that all is located of sieve mesh portion, from this when inhaling medicine powder, the air current can produce the ideal flow direction through sieve mesh portion better under the negative pressure effect, guarantees the effective inhalation of medicine powder. The guiding structure of the cover plate and the button member can prevent the puncture needle from being deflected or generating resistance feeling due to unstable moving position of the button member when being pressed. The cover body, the suction nozzle, the filter piece and the base of the suction device are coaxially connected, and anti-skid structures are arranged at multiple positions, so that the suction device accords with the ergonomic design.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims (30)

1. An inhalation device, comprising:

the suction nozzle comprises a suction nozzle body and a suction channel formed on the suction nozzle body, and the bottom of the suction channel is of a tubular structure;

the filtering piece comprises a sleeving part sleeved at the bottom end of the tubular structure and a screen part integrally formed with the sleeving part and is used for preventing capsule scraps generated after the capsule is punctured from entering the suction channel;

the capsule bin is positioned below the suction nozzle, and comprises a cover plate and a cavity which is integrally formed at the lower side of the cover plate and is used for containing capsules in a use state, and the cover plate is provided with a capsule placing port which is communicated with the cavity and is correspondingly combined with the screen part;

the piercing component is arranged on one side of the capsule bin and comprises a button part and a piercing needle which are movably arranged on one side of the capsule bin, and the button part moves relative to the capsule bin when being stressed in a use state so as to drive the piercing needle to pierce the capsule in the capsule bin;

a base including a seat for receiving the chamber and a portion of the piercing assembly;

the cover body covers the suction nozzle in a clamping state with the base;

when negative pressure is generated in the inhalation channel in the state that the capsule is placed in the capsule bin and the capsule is punctured, the medicine powder in the capsule enters the inhalation channel through the capsule placing opening and the screen part.

2. The inhalation device according to claim 1, wherein the lid, mouthpiece, capsule magazine, and base are coaxially hinged at their distal sides by a hinge.

3. The inhalation device according to claim 1, wherein said cover comprises a first snap-fit portion located proximal to said cover for snap-fitting with a proximal edge of said cover.

4. The inhalation device according to claim 3, wherein said first engaging portion is a protrusion located inside said proximal end of said cover, and said proximal end of said cover has an end surface engaging said protrusion to allow proximal engagement of the cover with the cover.

5. The inhalation device according to claim 1, wherein the cap comprises a first non-slip portion proximal to the cap.

6. The inhalation device according to claim 1, wherein said mouthpiece body comprises:

the mounting part is used for being clamped with the cover plate of the capsule bin;

a suction port portion integrally formed with the mounting portion and having an approximately flat elliptical structure adapted to the mouth of a human body;

wherein, a transition surface is arranged between the mounting part and the suction port part.

7. The inhalation device according to claim 1, wherein said mouthpiece comprises a second catch located proximal to said mouthpiece; the cover plate comprises a third clamping part which is positioned near the cover plate, and the second clamping part and the third clamping part are clamped at the near end.

8. The inhalation device according to claim 7, wherein the second engaging portion is a hook structure formed on a lower surface of the mouthpiece, and the third engaging portion is a bayonet provided on the cover plate and corresponding to the hook structure.

9. The inhalation device according to claim 1, wherein the mouthpiece comprises a second non-slip portion located proximal to the mouthpiece.

10. The inhalation device according to claim 1, wherein the bottom end of the tubular structure extends out of the mouthpiece body, so that the filter member sleeved thereon presses the capsule inlet under the engagement between the mouthpiece and the cover plate to form a closed passage for air flow.

11. The inhalation device according to claim 1 or 10, wherein the contact surfaces of the filter element and the capsule chamber have mating end surfaces for the tight fit of the filter element and the capsule chamber in the engaged state of the mouthpiece and the capsule chamber.

12. The inhalation device according to claim 1, wherein said cover comprises a side wing, said side wing having a fourth engaging portion for engaging with a fifth engaging portion on an upper side edge of said base.

13. The inhalation device according to claim 1, wherein said cover plate is provided with a first air inlet for facilitating the entry of outside air into the interior space of said base through said first air inlet when a negative pressure is generated in said inhalation passage.

14. The inhalation device according to claim 1, wherein the chamber of the capsule cartridge comprises a main chamber having a diameter greater than the transverse cross-sectional diameter of the capsule and less than the longitudinal cross-sectional diameter of the capsule.

15. The inhalation device according to claim 14, wherein the chamber bottom of the capsule chamber is provided with a sub-chamber communicating with the main chamber, the bottom end of the sub-chamber is provided with a second air inlet, and a gap is provided between the second air inlet and the bottom surface of the base, and the diameter of the sub-chamber is smaller than the transverse cross-sectional diameter of the capsule.

16. The inhalation device according to claim 1, wherein the capsule chamber is further provided with a first stop at a position towards the button member for limiting the position of movement of the piercing assembly relative to the capsule chamber.

17. The inhalation device according to claim 1, wherein the chamber of the capsule cartridge comprises a mounting structure for cooperating with the piercing assembly such that the piercing assembly pierces the capsule in the capsule cartridge with its piercing needle during movement relative to the capsule cartridge.

18. The inhalation device according to claim 17, wherein said mounting structure comprises:

the mounting plate is provided with symmetrical clamping grooves;

the abutting part is formed on the mounting plate and is positioned between the symmetrical clamping grooves;

and the two pipe parts are formed on the mounting plate, are respectively positioned on the upper side and the lower side of the abutting part, are communicated with the cavity and are used for limiting the puncturing direction of the puncture needle.

19. The inhalation device according to claim 18, wherein the piercing assembly further comprises a reset mechanism located between the button member and the abutment for being pressed upon movement of the button member in a direction toward the capsule chamber to provide a reset force to return the piercing needle and the button member to the initial position.

20. The inhalation device according to claim 18, wherein said lancet is disposed through said tube portion, and a proximal end of said lancet is fixedly connected to said button member.

21. The inhalation device according to claim 18, wherein said button member comprises a pressing portion and a movable connecting portion integrally formed with said pressing portion, and a distal end of said movable connecting portion has a stopper portion engaging with said engaging groove.

22. The inhalation device according to claim 21, wherein the outer surface of said pressing portion is provided with a third slippage prevention portion.

23. The inhalation device according to claim 1, wherein the tip portion of the lancet has a bevel.

24. The inhalation device according to claim 1, wherein the number of the needles is two and the needles are arranged in an up-down manner, and the distance between the two needles arranged in an up-down manner is smaller than the height of the capsule and larger than half of the height of the capsule.

25. The inhalation device according to claim 1, wherein the seat of the base comprises a fourth non-slip portion located distally of the seat.

26. The inhalation device according to claim 1, wherein the proximal end of the base is provided with an opening to provide a space for the piercing member to move.

27. The inhalation device according to claim 1, wherein the seat body of the base is provided with a second stop portion for limiting the movement position of the piercing assembly relative to the capsule chamber.

28. The inhalation device according to claim 1, wherein the base further comprises a transparent window mounted on the holder body, and the chamber of the capsule chamber has a transparent wall for viewing the state of the capsule in the capsule chamber through the base in the use state.

29. The inhalation device according to claim 28, wherein the transparent window is U-shaped, and correspondingly, the bottom surface of the base body of the base is provided with mounting grooves extending to the front and rear sides of the base body for mounting the transparent window.

30. The inhalation device according to claim 1, wherein the base is made of a transparent material, and the chamber of the capsule chamber has a transparent wall for viewing the state of the capsule in the capsule chamber through the base in the use state.

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