Powder inhaler, piercing mechanism, and powder delivery mechanism

Abstract

A powder inhaler, a piercing mechanism (8), and a powder delivery mechanism (5). The powder inhaler comprises: a housing assembly (1); a depolymerization mechanism (2), provided with a depolymerization cavity (21) in communication with an inhalation nozzle (3); a cover body (4), capable of being configured to a first position so as to cover the inhalation nozzle (3) or a second position so as to expose the inhalation nozzle (3); and the powder delivery mechanism (5). The powder delivery mechanism (5) comprises: an annular body (51), wherein the annular body (51) is provided with a plurality of capsule cavities (510) for placing a powder capsule (9), a transmission assembly (6) is separately connected to the cover body (4) and the annular body (51), and in a process that the cover body (4) is configured from the first position to the second position, the cover body (4) is linked to the transmission assembly (6) to rotate, and the transmission assembly (6) is linked to the annular body (51) to rotate, such that the plurality of capsule cavities (510) are sequentially in communication with the depolymerization cavity (21); and a sealing belt (531), wherein a first end of the sealing belt (531) is connected to a belt winding wheel assembly (7), and a second end thereof is wound around the annular body (51) in the circumferential direction of the annular body (51) and covers cavity openings of the plurality of capsule cavities (510). During rotation, the annular body (51) is linked to the belt winding wheel assembly (7) to rotate, such that the sealing belt (531) is separated from the annular body (51) and is wound around the belt winding wheel assembly (7).

Description

Powder inhaler, piercing mechanism and powder delivery mechanism

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Chinese patent applications 202410250793.6, 202410250796.X, 202410250795.5, and 202410251915.3 filed on March 5, 2024, and all of their contents are incorporated herein by reference.

Technical field

[0003] The present invention relates to the technical field of inhalation devices, and in particular to a powder inhaler, a piercing mechanism, a powder delivery mechanism and the powder inhaler. [Background Technology]

[0004] Powder inhalers typically consist of a housing assembly and various functional mechanisms. They dispense powdered pharmaceutical preparations through airflow inhalation, drawing powder from a powder capsule into a mouthpiece for inhalation. However, existing powder inhalers have issues such as cumbersome operation and bulky powder capsules, making them inconvenient to carry. [Summary of the invention]

[0005] The powder inhaler, piercing mechanism, powder delivery mechanism and powder inhaler provided in the present application are intended to solve the problems of cumbersome operation of existing powder inhalers and the large packaging volume of powder capsules, which are inconvenient to carry.

[0006] In order to solve the above technical problems, the first technical solution adopted by the present application is: to provide a powder inhaler, which includes a shell assembly, a deaggregation mechanism, a mouthpiece, a cover, a powder delivery mechanism, a transmission assembly and a take-up wheel assembly; wherein the deaggregation mechanism has a deaggregation chamber; the mouthpiece is connected to the deaggregation chamber; the cover can be configured to a first position to cover the mouthpiece; or configured to a second position to expose the mouthpiece; the powder delivery mechanism includes an annular body and a sealing belt, the annular body has a plurality of capsule cavities, the capsule cavities are used to place powder capsules; the transmission assembly and the cover are connected The cover body and the annular body are respectively connected; in the process of the cover body being configured from the first position to the second position, the cover body is linked to the transmission assembly to rotate, and the transmission assembly is linked to the annular body to rotate during the rotation process, so that the multiple capsule cavities are connected to the depolymerization cavity in sequence; the first end of the sealing belt is connected to the belt wheel assembly, and the second end is wound around the annular body along the circumferential direction of the annular body and covers the cavity openings of the multiple capsule cavities; in the process of the annular body rotating, the annular body is linked to the belt wheel assembly to rotate, thereby separating the sealing belt from the annular body and winding it around the belt wheel assembly.

[0007] In one embodiment of the present application, the stroke of the cover body from the first position to the second position includes an open cover idle stroke and an open cover load stroke after the open cover idle stroke; within the open cover idle stroke, the cover body does not link the rotation of the transmission assembly; within the open cover load stroke, the cover body triggers the transmission assembly to rotate, so as to link the powder delivery mechanism to rotate, thereby connecting multiple capsule cavities with the depolymerization cavity in sequence.

[0008] In one embodiment of the present application, the shell assembly has a buckle position, and the transmission assembly has an external rib position; the stroke of the cover body from the first position to the second position also includes an over-opening stroke after the cover opening load stroke; within the over-opening stroke, the external rib position passes through the buckle position, and a prompt sound is issued, and the relative position of the cover body and the shell assembly is locked.

[0009] In one embodiment of the present application, the cover body is rotatably connected to the shell assembly; and within the empty cover opening stroke, the rotation angle range of the cover body is 5°-30°; within the load cover opening stroke, the rotation angle range of the cover body is 70°-75°; within the over-cover opening stroke, the rotation angle range of the cover body is 3°-8°.

[0010] In one embodiment of the present application, one of the shell assembly and the powder delivery mechanism has a first limiter, and the other has multiple second limiters; when the capsule cavity and the depolymerization cavity are aligned, the first limiter is engaged with one of the second limiters.

[0011] In one embodiment of the present application, the powder delivery mechanism comprises:

[0012] An annular body, wherein a plurality of capsule cavities are formed on an outer peripheral surface of the annular body and are spaced apart along a circumferential direction of the annular body;

[0013] A passive component is connected to the annular body and is used to link the annular body to rotate so that the multiple capsule cavities are connected to the depolymerization cavity in sequence;

[0014] The first limiting member is formed on the shell component; the plurality of second limiting members are formed on the passive component, and one second limiting member corresponds to one capsule cavity.

[0015] In one embodiment of the present application, the housing assembly further includes a support member, which elastically abuts against the inner circumferential surface of the annular body.

[0016] In one embodiment of the present application, the inner circumferential surface of the annular body has a plurality of grooves spaced apart along its circumferential direction; at least a portion of the support member extends to the side where the inner circumferential surface of the annular body is located, and the support member has a protrusion on the side surface facing the annular body, and the protrusion is embedded in the groove and interference fits with the groove.

[0017] In one embodiment of the present application, the passive component includes a driven wheel, the driven wheel having a plurality of first saw teeth, the plurality of first saw teeth being arranged at equal intervals along the circumferential direction of the driven wheel, and along the circumferential direction of the driven wheel, a first spacing L between the first first saw tooth and the last first saw tooth satisfies the following formula:

[0018] L>a+2b; where a is the width of the first sawtooth along the circumferential direction of the driven wheel; b is the distance between two adjacent first sawtooth along the circumferential direction of the driven wheel;

[0019] The transmission assembly includes a driving wheel; the driving wheel has a plurality of second saw teeth, the second saw teeth are engaged with the first saw teeth, and along the circumferential direction of the driven wheel, the first spacing is greater than the spacing between two adjacent second saw teeth.

[0020] In one embodiment of the present application, when the cover is in the second position, there is interference between the last first serration of the driving wheel and the driven wheel, and the interference amount is greater than 0° and less than [360° / (Q*2 / 3)]; Q is the total number of teeth of the driven wheel.

[0021] In one embodiment of the present application, the transmission assembly also includes a ratchet, which is connected to the cover body; in the empty stroke of opening the cover, the cover body is linked to the ratchet to rotate, and the ratchet is not in contact with the driving wheel; in the load stroke of opening the cover, the cover body is linked to the ratchet to continue rotating, the ratchet is in contact with the driving wheel, and drives the driving wheel to rotate.

[0022] In one embodiment of the present application, the take-up wheel assembly includes an intermediate gear and a take-up wheel; the intermediate gear is respectively engaged with the annular body and the take-up wheel; the first end of the sealing belt is connected to the take-up wheel; wherein, the transmission ratio between the annular body and the take-up wheel is a first ratio; the transmission ratio between the driven wheel and the driving wheel is a second ratio, and the first ratio is greater than the second ratio.

[0023] In one embodiment of the present application, it also includes: a piercing mechanism, including a mounting seat, a protective member and a piercing member, the protective member and the piercing member are respectively arranged on the mounting seat, and both extend in the first direction; and along the first direction, the end of the protective member facing away from the mounting seat protrudes beyond the end of the piercing member facing away from the mounting seat.

[0024] In one embodiment of the present application, the shell assembly includes a first shell and a second shell, and the first shell and the second shell cooperate to form a accommodating chamber, and the powder delivery mechanism, the transmission assembly and the belt pulley assembly are respectively arranged in the accommodating chamber, and part of the transmission assembly is exposed through the first shell to be connected to the cover body; the belt pulley assembly is located on the side of the powder delivery mechanism facing the second shell; the cover body is further rotatably connected to the second shell; wherein, one of the transmission assembly and the first shell has a first clamping piece, and the other has a first clamping groove. When the cover body is configured to the first position, the first clamping piece is embedded in the first clamping groove and a reset prompt sound is emitted.

[0025] In one embodiment of the present application, one of the side surface of the cover body facing the second shell and the side surface of the second shell facing the cover body has a protrusion, and the other has a first limiting rib. During the process of configuring the cover body from the second position to the first position, the protrusion passes over the first limiting rib.

[0026] To solve the above technical problems, the second technical solution adopted in this application is to provide a powder delivery mechanism, comprising:

[0027] The annular body has a plurality of capsule cavities along its circumferential outer surface, the capsule cavities extending along the axial direction of the annular body; and at least one side wall of the capsule cavity along the axial direction of the annular body is provided with a puncture hole;

[0028] A plurality of powder capsules are disposed in the plurality of capsule cavities;

[0029] The sealing component at least covers the cavity opening and the puncture hole of the capsule cavity.

[0030] In one embodiment of the present application, the sealing assembly includes:

[0031] A sealing belt is arranged around the annular body along the circumferential direction of the annular body and covers the opening of the capsule cavity;

[0032] The sealing ring is arranged on the side wall of the annular body along the axial direction of the annular body and covers each puncture hole.

[0033] In one embodiment of the present application, at least one puncture hole is formed on both side walls of the capsule cavity along the axial direction of the annular body;

[0034] The sealing ring includes a first sealing ring and a second sealing ring; along the axial direction of the annular body, the first sealing ring is arranged on the first side wall of the annular body and covers all puncture holes on the corresponding side; the second sealing ring is arranged on the second side wall of the annular body and covers all puncture holes on the corresponding side.

[0035] In one embodiment of the present application, an avoidance hole is provided on at least one side of the puncture hole along the circumferential direction of the annular body, and the avoidance hole is used to avoid the protective part of the puncture mechanism.

[0036] In one embodiment of the present application, an avoidance hole is respectively provided on both sides of the puncture hole along the circumferential direction of the annular body, and the openings of the avoidance hole and the opening of the puncture hole face the same direction.

[0037] In one embodiment of the present application, the annular body has a receiving groove on at least one side along its axial direction, and the receiving groove contains a desiccant.

[0038] In one embodiment of the present application, the sealing assembly further includes: a third sealing ring, the third sealing ring covering the notch of the accommodating groove.

[0039] In one embodiment of the present application, it further includes:

[0040] A passive assembly includes a follower having an extension arm;

[0041] The third sealing ring has a through hole, and the extension arm of the driven member passes through the through hole and is clamped with the annular body, thereby fixing the third sealing ring between the driven member and the annular body.

[0042] In one embodiment of the present application, it further includes:

[0043] The passive component includes a follower, which is connected to the annular body and is used to drive the annular body to rotate along its circumferential direction; and the follower has a second limiter, which is used to cooperate with the first limiter of the shell component so that when the capsule cavity and the depolymerization cavity are aligned, the first limiter is engaged with a second limiter.

[0044] In one embodiment of the present application, the bottom wall of the capsule cavity is in a sealed state.

[0045] In one embodiment of the present application, the plurality of capsule cavities are centrally symmetrically distributed along the circumferential direction of the annular body.

[0046] In one embodiment of the present application, each capsule cavity contains a powder capsule.

[0047] To solve the above technical problems, the third technical solution adopted in this application is to provide a powder inhaler, comprising:

[0048] housing assembly;

[0049] The powder delivery mechanism is detachably arranged in the shell assembly and is the powder delivery mechanism mentioned above.

[0050] In order to solve the above technical problems, the fourth technical solution adopted by this application is to provide a piercing mechanism, including:

[0051] Mounting seat;

[0052] The protective member and the piercing member are respectively arranged on the mounting seat and both extend in the first direction; and along the first direction, one end of the protective member away from the mounting seat protrudes beyond the other end of the piercing member away from the mounting seat.

[0053] In one embodiment of the present application, there are two protective members, which are arranged on two sides of the piercing member opposite to each other.

[0054] In one embodiment of the present application, the end of the piercing member facing away from the mounting seat forms an insertion end, and the insertion end has a first inclined surface. Along the first direction, the first inclined surface extends from the end of the insertion end close to the mounting seat to the end facing away from the mounting seat; and the inclination angle of the first inclined surface is 1°-60°.

[0055] In one embodiment of the present application, the insertion end further has a second inclined surface, which extends along the first direction to an end of the insertion end away from the mounting seat, and the second inclined surface intersects with the first inclined surface.

[0056] In one embodiment of the present application, the mounting seat has a mounting post, the mounting post has a mounting hole, and one end of the piercing member is inserted into and fixed in the mounting hole;

[0057] The piercing mechanism further includes: a second elastic member, which is sleeved on the outside of the piercing member, and one end of the second elastic member is sleeved and fixed on the outside of the mounting column, and the other end is used to abut against the shell assembly.

[0058] To solve the above technical problems, the fifth technical solution adopted in this application is to provide a powder delivery mechanism, comprising:

[0059] The annular body has a capsule cavity for receiving the powder capsule;

[0060] A puncture hole is provided on at least one side wall along the axial direction of the annular body, and the puncture member of the puncture mechanism is inserted into the capsule cavity through the puncture hole; an avoidance hole is provided on at least one side of the puncture hole along the circumferential direction of the annular body, and the avoidance hole is used to avoid the protective member of the puncture mechanism.

[0061] In one embodiment of the present application, a puncture hole is respectively provided on both side walls of the capsule cavity along the axial direction of the annular body; each puncture hole is respectively provided on both sides along the circumferential direction of the annular body, and one avoidance hole is used to accommodate a protective member.

[0062] In one embodiment of the present application, the annular body has a plurality of capsule cavities, and the plurality of capsule cavities are arranged on the outer peripheral surface of the annular body at intervals along the circumferential direction of the annular body.

[0063] To solve the above technical problems, the sixth technical solution adopted in this application is to provide a powder inhaler, comprising:

[0064] The piercing mechanism is the piercing mechanism mentioned above;

[0065] A powder delivery mechanism, which is the powder delivery mechanism mentioned above;

[0066] Among them, when the protective piece of the piercing mechanism is aligned with the avoidance hole of the powder delivery mechanism, the mounting seat of the piercing mechanism is pressed, and the piercing piece of the piercing mechanism can be inserted into the capsule cavity to pierce the powder capsule in the capsule cavity; when the protective piece is misaligned with the avoidance hole, the mounting seat is pressed, and the protective piece abuts against the side wall of the avoidance hole, thereby limiting the abutment between the piercing piece and the powder delivery mechanism.

[0067] In one embodiment of the present application, the extension length of the avoidance hole is not less than the length of the insertion end of the piercing member along the first direction.

[0068] In one embodiment of the present application, it further includes:

[0069] The powder delivery mechanism is detachably arranged in the shell component; a portion of the mounting seat is exposed from the shell component and serves as a button.

[0070] In order to solve the above technical problems, the seventh technical solution adopted in this application is to provide a powder inhaler, comprising:

[0071] housing assembly;

[0072] a depolymerization mechanism having a depolymerization cavity;

[0073] The powder delivery mechanism is disposed in the housing assembly and has a plurality of capsule cavities for storing powder capsules; the powder delivery mechanism is movable relative to the deaggregation cavity so that the plurality of capsule cavities are sequentially connected to the deaggregation cavity;

[0074] Among them, one of the shell assembly and the powder delivery mechanism has a first limiting member, and the other has a plurality of second limiting members; when the capsule cavity and the depolymerization cavity are aligned, the first limiting member is engaged with one of the second limiting members.

[0075] In one embodiment of the present application, the powder delivery mechanism comprises:

[0076] An annular body, wherein a plurality of capsule cavities are formed on an outer peripheral surface of the annular body and are spaced apart along a circumferential direction of the annular body;

[0077] A passive component is connected to the annular body and is used to link the annular body to rotate so that the multiple capsule cavities are connected to the depolymerization cavity in sequence;

[0078] The first limiting member is formed on the shell component; the plurality of second limiting members are formed on the passive component, and one second limiting member corresponds to one capsule cavity.

[0079] In one embodiment of the present application, the first limiting member includes a limiting elastic arm; the second limiting member is a limiting groove.

[0080] In one embodiment of the present application, the passive component includes a driven wheel, which is connected to the inner circumference of the annular body; along the axial direction of the annular body, a plurality of second limiting members are distributed in a ring shape on the side surface of the driven wheel facing the shell component; and the second limiting members are aligned with the corresponding capsule cavity along the radial direction of the annular body.

[0081] In one embodiment of the present application, it further includes:

[0082] a suction nozzle, connected to the depolymerization chamber;

[0083] The transmission assembly is arranged in the housing assembly and connected to the passive assembly, and is used to link the passive assembly to rotate during the rotation process;

[0084] The cover body can be configured to a first position to cover the suction nozzle; or configured to a second position to expose the suction nozzle; wherein, during the process of the cover body rotating from the first position to the second position, the cover body is linked to the transmission assembly to rotate and drive the first limit member to disengage from the current second limit member, thereby driving the annular body to rotate.

[0085] In one embodiment of the present application, the housing assembly further includes a support member, which elastically abuts against the inner circumferential surface of the annular body.

[0086] In one embodiment of the present application, the inner circumferential surface of the annular body has a plurality of grooves arranged at intervals along its circumferential direction;

[0087] At least part of the support extends to the side where the inner circumference of the annular body is located, and a surface of the support facing the annular body is provided with a protrusion, which is embedded in the groove and has an interference fit with the groove.

[0088] In one embodiment of the present application, the shell assembly includes a first shell and a second shell, the first shell and the second shell cooperate to form a accommodating cavity, and the powder delivery mechanism is arranged in the accommodating cavity; the first limiting member is arranged on the first shell; the support member is arranged on the second shell and extends toward the first shell.

[0089] In one embodiment of the present application, the deagglomeration mechanism further has an annular convex rib, which abuts against the outer peripheral surface of the annular body and surrounds an entrance to form a deagglomeration cavity, through which the powder capsules in the capsule cavity enter the deagglomeration cavity.

[0090] In one embodiment of the present application, the deagglomeration chamber has an external air inlet and an internal air inlet; during the suction process, external air enters the deagglomeration chamber through the external air inlet and the internal air inlet in sequence, forming a rotating airflow; the powder capsules in the capsule chamber enter the deagglomeration chamber under the action of the pressure difference between the capsule chamber and the deagglomeration chamber, and rotate under the action of the rotating airflow, thereby causing the powder in the powder capsule to overflow and enter the suction nozzle;

[0091] Among them, the air intake area of ​​the inner air intake is 10~30mm 2 , the air intake area of ​​the external air inlet is not less than the air intake area of ​​the internal air inlet.

[0092] In one embodiment of the present application, the nozzle has multiple grids, and the powder in the deagglomeration chamber enters the nozzle through the grids; and the air inlet area of ​​the grids is 0.5 to 2 mm 2 The total air intake area of ​​all grids is 10 to 60 mm 2 ; The air outlet area of ​​the nozzle is 50-100mm 2 .

[0093] In one embodiment of the present application, the distance between the bottom of the capsule cavity and the grid of the suction nozzle is smaller than the length of the powder capsule.

[0094] The powder inhaler provided in the present application provides multiple capsule cavities on a powder delivery mechanism, allowing powder capsules to be placed in the cavities. During rotation of the powder delivery mechanism, the cavities are sequentially connected to the deaggregation chamber, allowing the powder capsules in each cavity to enter the deaggregation chamber for inhalation by the user. This eliminates the need to carry separate powder capsules, which is inconvenient to carry, and eliminates the need to tear open the aluminum foil package and manually place the powder capsules in the powder inhaler, simplifying operation. Furthermore, by rotating the cover body in conjunction with the transmission assembly, the transmission assembly rotates in conjunction with the powder delivery mechanism, which in turn rotates in conjunction with the take-up wheel assembly, thereby separating the sealing tape of the powder delivery mechanism from the annular body and winding it around the take-up wheel assembly, exposing the powder capsules in the capsule cavities. Furthermore, when the capsule cavities are connected to the deaggregation chamber, the powder capsules in the capsule cavities can enter the deaggregation chamber. This powder inhaler achieves linkage between the cover body, powder delivery mechanism, transmission assembly, and take-up wheel assembly, simplifying operation.

Brief Description of the Drawings

[0095] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0096] FIG1 is a schematic structural diagram of a powder inhaler provided by an embodiment of the present application, wherein the cover is configured to a first position;

[0097] FIG2 is a schematic structural diagram of a powder inhaler provided by an embodiment of the present application with the cover configured in a second position;

[0098] Figures 3 and 4 are two disassembled schematic diagrams of the powder inhaler provided in an embodiment of the present application;

[0099] FIG5 is a partial schematic diagram of a powder inhaler provided in one embodiment of the present application;

[0100] FIG6 is a cross-sectional view taken along line AA of the powder inhaler shown in FIG2 according to an embodiment of the present application;

[0101] FIG7 is a schematic structural diagram of a powder inhaler with the mouthpiece opened to expose the deaggregation chamber according to an embodiment of the present application;

[0102] FIG8 is a disassembled schematic diagram of a powder delivery mechanism provided in one embodiment of the present application;

[0103] FIG9 is a schematic structural diagram of an annular body provided in one embodiment of the present application;

[0104] FIG10 a is a cross-sectional view taken along line BB of the powder inhaler shown in FIG1 according to an embodiment of the present application;

[0105] FIG10 b is a cross-sectional view taken along line EE of the powder inhaler shown in FIG1 according to an embodiment of the present application;

[0106] FIG11 is a schematic structural diagram of the engagement of a first sawtooth of a driven wheel with a driving wheel according to an embodiment of the present application;

[0107] FIG12 is a schematic structural diagram of the last first serration of the driven wheel meshing with the driving wheel according to an embodiment of the present application;

[0108] FIG13 is a schematic structural diagram of the powder inhaler with the second shell removed, when the cover is in the second position according to an embodiment of the present application;

[0109] FIG14 is a cross-sectional view of a take-up wheel provided in one embodiment of the present application;

[0110] FIG15 is a disassembled schematic diagram of a take-up wheel provided in one embodiment of the present application;

[0111] FIG16 is a schematic structural diagram of the rotating member in the take-up pulley shown in FIG15 ;

[0112] FIG17 is a schematic structural diagram of a piercing mechanism provided in one embodiment of the present application;

[0113] FIG18 is a cross-sectional view taken along line CC of the powder inhaler shown in FIG2 according to an embodiment of the present application;

[0114] FIG19 is a DD-direction cross-sectional view of the powder inhaler shown in FIG7 according to an embodiment of the present application;

[0115] 20 to 21 are schematic structural diagrams of the piercing member provided in this application from different perspectives.

[0116] Explanation of Reference Numerals: 1 - Housing assembly; 11 - First housing; 111 - Window; 112 - First engaging groove; 113 - First limiting member; 114 - Slide groove; 115 - Buckle; 12 - Second housing; 121 - First rotating shaft; 122 - First limiting rib; 123 - Support member; 124 - Protrusion; 125 - Second rotating shaft; 2 - Deaggregation mechanism; 21 - Deaggregation chamber; 22 - External air inlet; 23 - Internal air inlet; 24 - Annular rib; 3 - Suction nozzle; 31 - Grid; 32 - Internal straight air channel; 4 - Cover; 41 - First connecting arm; 411 - Engraving groove; 42 - Second connecting arm; 421 - Rotation hole; 422 - Protrusion; 5-powder delivery mechanism; 5a-first ring portion; 5b-second ring portion; 51-annular body; 510-capsule cavity; 511-groove; 512-puncture hole; 513-identification information; 514-accommodation slot; 515-avoidance hole; 52-driven wheel; 521-first sawtooth; 522-extension arm; 523-second stopper; 531-sealing belt; 532-first sealing ring; 533-second sealing ring; 534-third sealing ring; 535-through hole; 6-transmission assembly; 61-ratchet; 611-clamping block; 612-first clamping member; 62-driving wheel; 621-second sawtooth; 622-external rib; 7-Tape pulley assembly; 71-Intermediate gear; 72-Tape pulley; 73-Casing; 731-Third limiting rib; 74-Third rotating shaft; 741-Second limiting rib; 75-First elastic member; 76-Back seat; 761-Second limiting groove; 77-Rotating member; 771-First limiting groove; 8-Piercing mechanism; 81-Mounting seat; 811-Locking member; 812-Mounting column; 82-Piercing member; 821-First inclined plane; 822-Second inclined plane; 83-Protective member; 84-Second elastic member; 9-Powder capsule. [Specific implementation method]

[0117] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0118] The terms "first," "second," and "third" in this application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications also change accordingly. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0119] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0120] In the related art, there are typically only single-dose powder inhalers, meaning they can only hold one powder capsule. This type of powder inhaler requires the user to carry the powder capsule, enclosed in aluminum foil, at all times. After the powder capsule in the powder inhaler is completely inhaled, the discarded powder capsule shell must be manually poured out. The user then tears open the aluminum foil of the carried powder capsule and places the powder capsule into the powder inhaler; then, the needle pierces the powder capsule and inhales the powder in the powder capsule. Consequently, this type of powder inhaler presents problems such as cumbersome operation, a large powder capsule package, inconvenient portability, and troublesome disposal of discarded powder capsules.

[0121] Based on this, the embodiment of the present application provides a powder inhaler, which does not require the additional carrying of powder capsules, thereby avoiding the inconvenience of carrying powder capsules; and eliminates the need to tear open the aluminum foil package and manually place the powder capsules in the powder inhaler, making the operation relatively simple.

[0122] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0123] Referring to Figures 1 and 2, Figure 1 is a schematic diagram of the structure of a powder inhaler according to one embodiment of the present application, with the cover configured in a first position; and Figure 2 is a schematic diagram of the structure of a powder inhaler according to one embodiment of the present application, with the cover configured in a second position. In this embodiment, a powder inhaler is provided, comprising a housing assembly 1, a deaggregating mechanism 2, a mouthpiece 3, a cover 4, a powder delivery mechanism 5, a transmission assembly 6, a take-up wheel assembly 7, and a piercing mechanism 8.

[0124] Referring to Figures 3 and 4 , two schematic diagrams of a disassembled powder inhaler according to an embodiment of the present invention are shown. The housing assembly 1 includes a first housing 11 and a second housing 12, which are arranged opposite each other and cooperate to form a receiving chamber. The powder delivery mechanism 5, transmission assembly 6, and take-up pulley assembly 7 are all detachably disposed within the receiving chamber. The first housing 11 has a window 111 through which a portion of the transmission assembly 6 is exposed for connection to the cover 4.

[0125] 2 , the cover 4 is connected to the housing assembly 1 and can rotate back and forth between a first position and a second position. The process of rotating the cover 4 from the first position to the second position is called the opening process, and the process of rotating from the second position to the first position is called the closing process. As shown in FIG1 , when the cover 4 is configured in the first position, the cover 4 covers the suction nozzle 3 to protect the suction airway. As shown in FIG2 , when the cover 4 is configured in the second position, the cover 4 exposes the suction nozzle 3, allowing the powder in the powder capsule 9 to be sucked through the suction nozzle 3.

[0126] In one embodiment, the cover 4 is linked with the transmission assembly 6, the powder delivery mechanism 5, and the take-up wheel assembly 7 to achieve a coordinated action between the various components by rotating the cover 4 back and forth between a first position and a second position, thereby enabling the powder inhaler to inhale powders such as medicinal powders, and is simpler to operate than conventional powder inhalers. The reciprocating rotation herein refers to a repetitive path, with the two rotations being in opposite directions, for example, a clockwise rotation from the first position to the second position, and then a counterclockwise rotation from the second position back to the first position.

[0127] 3 and 4 , the cover body 4 has a first connecting arm 41 and a second connecting arm 42 that are opposite to each other. The first connecting arm 41 of the cover body 4 is located on the side of the first shell 11 facing away from the second shell 12 and is connected to the transmission assembly 6 through the window 111 of the first shell 11. Specifically, one of the transmission assembly 6 and the first connecting arm 41 has a snap-fit ​​block 611, and the other has a slot 411 that matches the snap-fit ​​block 611. The snap-fit ​​block 611 is embedded in the slot 411 to achieve connection between the transmission assembly 6 and the cover body 4. The cover body 4 drives the transmission assembly 6 to rotate via the snap-fit ​​block 611 to complete the process of opening or closing the cover. There can be two snap-fit ​​blocks 611 and two slots 411, with two snap-fit ​​blocks 611 provided on the transmission assembly 6 and two slots 411 provided on the first connecting arm 41.

[0128] The second connecting arm 42 of the cover 4 is located on the side of the second shell 12 facing away from the first shell 11 and is rotatably connected to the second shell 12. Of the two opposing surfaces of the second shell 12 and the second connecting arm 42, one has a first rotating shaft 121, and the other has a rotating hole 421. The first rotating shaft 121 is embedded in the rotating hole 421 and can rotate within the rotating hole 421. The first rotating shaft 121 can be provided on a side surface of the second shell 12 facing the second connecting arm 42, and the rotating hole 421 is provided on the second connecting arm 42. In this embodiment, when the cover 4 is configured from the second position to the first position, the cover 4 drives the transmission assembly 6 to reset via the engaging block 611.

[0129] In some embodiments, referring to Figures 3 and 5 , Figure 5 is a partial schematic diagram of a powder inhaler provided in one embodiment of the present application; one of the transmission assembly 6 and the first housing 11 has a first engaging member 612, and the other has a first engaging groove 112. When the cover 4 is configured to the first position, i.e., when the cover is closed, the first engaging member 612 engages with the first engaging groove 112. In this way, the cover 4 can be restrained in the first position by the first engaging groove 112 and the first engaging member 612; at the same time, the resistance to opening the cover can be increased, reducing the probability of the cover 4 being accidentally opened.

[0130] The first clamping member 612 may be a protrusion, and the first clamping groove 112 may be a recess matching the protrusion.

[0131] In one embodiment, in conjunction with Figures 3 and 4 , one of the side surface of the cover 4 facing the second shell 12 and the side surface of the second shell 12 facing the cover 4 has a protrusion 422 (see Figure 4 ), and the other has a first limiting rib 122 (see Figure 3 ). During the process of the cover 4 being configured from the second position to the first position, that is, after the cover is closed, the protrusion 422 passes over the first limiting rib 122. In this way, the first limiting rib 122 can block the process of the cover 4 rotating from the first position to the second position, thereby increasing the resistance to opening the cover and reducing the probability of the cover 4 being accidentally opened. In addition, a pre-tightening force is provided when the cover is opened to prevent the cover 4 from being accidentally closed. In the process of closing the cover, the pawl of the ratchet 61 is squeezed and deformed by the drive wheel 62, thereby producing a sound.

[0132] 3 and 4 , the protrusion 422 can be formed on a side surface of the second connecting arm 42 facing the second housing 12, and the first limiting rib 122 can be formed on a side surface of the second housing 12 facing the second connecting arm 42. Both the protrusion 422 and the first limiting rib 122 can be two in number, with the two first limiting ribs 122 being located on opposite sides of the first rotating shaft 121, and the two protrusions 422 being located on opposite sides of the rotating hole 421.

[0133] Refer to Figure 6, which is an AA sectional view of the powder inhaler shown in Figure 2 provided by an embodiment of the present application; the deaggregation mechanism 2 is covered at the cavity opening of the accommodating cavity and has a deaggregation cavity 21. The suction nozzle 3 is connected to the deaggregation cavity 21. The powder delivery mechanism 5 has a plurality of capsule cavities 510, and the capsule cavity 510 is used to accommodate or accommodate powder capsules 9. One capsule cavity 510 can be used to accommodate one powder capsule 9. The powder capsule 9 can specifically be an HPMC (Hydroxypropyl Methyl Cellulose) capsule. The transmission assembly 6 is connected to the powder delivery mechanism 5. During the process of the cover body 4 being configured from the first position to the second position, the cover body 4 is linked to the transmission assembly 6 for rotation; the transmission assembly 6 is further linked to the powder delivery mechanism 5 for rotation, so that the plurality of capsule cavities 510 are sequentially connected to the deaggregation cavity 21.

[0134] The specific structures and functions of the suction nozzle 3, the deagglomeration mechanism 2, the powder delivery mechanism 5, the transmission assembly 6, the take-up wheel assembly 7 and the piercing mechanism 8 are introduced below.

[0135] (1) Nozzle 3

[0136] Please continue to refer to Figure 6. The nozzle 3 has multiple grids 31 and an inner straight airway 32. The multiple grids 31 are formed at the port at the first end of the inner straight airway 32. The inner straight airway 32 is connected to the depolymerization chamber 21 through the multiple grids 31. The port at the second end of the inner straight airway 32 forms an air outlet. The powder in the powder capsule 9 enters the user's body through the inner straight airway 32. The air inlet area of ​​each grid 31 is 0.5 to 2 mm.2 The total air intake area of ​​all grids 31 is 10 to 60 mm 2 The outlet area of ​​nozzle 3 is 50-100mm 2 .

[0137] In some embodiments, the distance H between the bottom of the capsule cavity 510 and the grid 31 of the suction nozzle 3 is less than the length of the powder capsule 9. In this way, when the capsule cavity 510 is aligned with the deaggregation cavity 21, the powder capsule 9 can be effectively prevented from standing upright, that is, the powder capsule 9 extends in the direction Y along the deaggregation cavity 21 toward the capsule cavity 510, which would cause the powder capsule 9 to be unable to rotate.

[0138] (2) Depolymerization mechanism 2

[0139] Figures 6 and 7 are combined to illustrate the structure of a powder inhaler according to one embodiment of the present invention, wherein the nozzle is opened to reveal the deaggregation chamber. The deaggregation mechanism 2 further comprises an external air inlet 22 and an internal air inlet 23. The external air inlet 22 communicates with the ambient air, while the internal air inlet 23 communicates with both the external air inlet 22 and the deaggregation chamber 21. During the inhalation process, when the user holds the mouthpiece 3 in their mouth and inhales, airflow enters the interior of the powder inhaler through the outer air inlets 22 on either side of the deagglomeration chamber 21 and then enters the deagglomeration chamber 21 through the inner air inlets 23 on either side of the deagglomeration chamber 21. Due to the position of the inner air inlets 23 on either side of the deagglomeration chamber 21 and the structure of the deagglomeration chamber 21, the airflow forms a rotating airflow within the deagglomeration chamber 21, forming a low-pressure area above the capsule chamber 510. The powder capsules 9 within the capsule chamber 510 rise from the capsule chamber 510 due to the pressure difference between the capsule chamber 510 and the deagglomeration chamber 21 and enter the deagglomeration chamber 21. Under the influence of the rotating airflow, the powder capsules 9 begin to rotate within the deagglomeration chamber 21, producing a sound. As the powder capsules 9 rotate, the powder within the powder capsules 9 is discharged from the openings on either side of the powder capsules 9, then enters the mouthpiece 3 through the grid 31 of the mouthpiece 3, and ultimately enters the user's body. It will be understood that the rotation plane of the powder capsules 9 is parallel to the axial direction X of the annular body 51.

[0140] As shown in FIG7 , after the user has finished sucking each powder capsule 9 , there will be empty powder capsules 9 remaining in the deaggregation chamber 21 or the capsule chamber 510 , and the user can open the suction nozzle 3 to pour out the empty powder capsules.

[0141] The air inlet area of ​​the inner air inlet 23 and the outer air inlet 22, as well as the size of the air inlet area of ​​the inner air inlet 23 and the outer air inlet 22, will affect the inhalation resistance of the powder inhaler, the rotation speed of the powder capsule 9 and the deagglomeration effect. In one embodiment, the air inlet area of ​​the air inlet 23 is 10 to 30 mm. 2 , the air intake area of ​​the outer air intake port 22 is not less than the air intake area of ​​the inner air intake port 23.

[0142] In one specific embodiment, as shown in FIG6 , the deaggregating mechanism 2 further comprises an annular rib 24. The annular rib 24 abuts the outer circumferential surface of the annular body 51, thereby forming an entrance to the deaggregating chamber 21. The powder capsules 9 in the capsule cavity 510 enter the deaggregating chamber 21 through the entrance. The abutment of the deaggregating mechanism 2 with the annular body 51 via the annular rib 24 effectively ensures the width and degree of contact between the two surfaces, achieving a better sealing effect between the deaggregating mechanism 2 and the annular body 51 than surface contact.

[0143] (3) Powder delivery mechanism 5

[0144] Referring to Figures 8 and 9, Figure 8 is a disassembled schematic diagram of the powder delivery mechanism provided in one embodiment of the present application; Figure 9 is a structural schematic diagram of the annular body provided in one embodiment of the present application. The powder delivery mechanism 5 includes an annular body 51, a sealing component (not shown in the figure) and a passive component (not shown in the figure). All capsule cavities 510 are formed on the annular body 51, and can be located on the outer peripheral surface of the annular body 51, and are spaced apart along the circumferential direction of the annular body 51. Specifically, all capsule cavities 510 on the annular body 51 are centrally symmetrically distributed along the circumferential direction of the annular body 51. The bottom wall of the capsule cavity 510 does not have an opening, that is, it is in a sealed state to reduce the ingress of water vapor and reduce the risk of the powder capsule 9 in the capsule cavity 510 getting damp.

[0145] In some embodiments, referring to FIG10a, FIG10a is a BB cross-sectional view of the powder inhaler shown in FIG1 according to an embodiment of the present application; the housing assembly 1 further includes a support member 123, which elastically abuts against the inner circumference of the annular body 51. This ensures that the relative motion surfaces of the depolymerization chamber 21 and the capsule chamber 510 are in close contact. Specifically, the support member 123 can support the elastic arm. The support member 123 can be formed on a side surface of the second housing 12 facing the first housing 11, and extend to the side where the inner circumference of the annular body 51 is located, and abut against the inner circumference of the annular body 51.

[0146] In some specific embodiments, in combination with Figure 9, the inner circumferential surface of the annular body 51 has a plurality of spaced grooves 511 along its circumferential direction; at least part of the support member 123 extends to the side where the inner circumferential surface of the annular body 51 is located, and the support member 123 has a protrusion 124 on the side surface facing the annular body 51, and the protrusion 124 is embedded in the groove 511 and is interference fit with the groove 511 to ensure that the support member 123 always has a supporting effect on the annular body 51, thereby achieving the effect of the outer side surface of the annular body 51 and the annular rib 24 of the depolymerization cavity 21 being in close contact with each other.

[0147] The number of capsule cavities 510 on the annular body 51 can be 2-30, such as 5, 10, 15, 20, or 30. The annular body 51 can be a circular ring or a polygonal ring. The size specification model of the powder capsule 9 can be selected from 3# to 5#.

[0148] 9 , the capsule cavity 510 extends along the axial direction X of the annular body 51 , and along the axial direction X of the annular body 51 , at least one side wall of the capsule cavity 510 is provided with a puncture hole 512 , and the puncture member 82 of the puncture mechanism 8 is inserted into the capsule cavity 510 through the puncture hole 512 to puncture the powder capsule 9 , thereby allowing the powder in the powder capsule 9 to be discharged.

[0149] In one specific embodiment, as shown in FIG8 , the annular body 51 includes a first ring portion 5a and a second ring portion 5b along its axial direction X. A capsule cavity 510 is formed on the outer circumferential surface of the first ring portion 5a, and a receiving groove 514 is formed on the side of the first ring portion 5a facing away from the second ring portion 5b. The second ring portion 5b is a gear and meshes with the take-up pulley assembly 7 to coordinate rotation of the take-up pulley assembly 7 during rotation of the annular body 51. In this embodiment, identification information 513 is specifically provided on the side of the second ring portion 5b facing away from the first ring portion 5a. Specifically, the second ring portion 5b can be integrally formed with the first ring portion 5a. Both the second ring portion 5b and the first ring portion 5a can be circular or polygonal rings, and the diameter of the second ring portion 5b can be smaller than that of the first ring portion 5a, thereby miniaturizing the powder delivery mechanism 5 as much as possible.

[0150] 6 and 8 , the sealing assembly includes a sealing strip 531 and a sealing ring. The first end of the sealing strip 531 is connected to the take-up pulley assembly 7. The second end of the sealing strip 531 is wound around the outer surface of the annular body 51 along the circumference of the annular body 51, covering the opening of the capsule cavity 510. During rotation of the take-up pulley assembly 7, the take-up pulley assembly 7 drives the sealing strip 531, which is wound around the take-up pulley assembly 7, to separate from the annular body 51, exposing the powder capsules 9 within the capsule cavity 510 and allowing the powder capsules 9 within the capsule cavity 510 to enter the deagglomeration chamber 21.

[0151] The sealing ring is provided on the side wall of the annular body 51 along the axial direction X of the annular body 51 and covers each puncture hole 512 to cooperate with the sealing tape 531 to wrap and seal the powder capsule 9 to prevent the powder capsule 9 from getting wet. The sealing ring and the sealing tape 531 can be made of materials such as aluminum foil or silicone.

[0152] In a specific embodiment, in combination with Figures 8 and 9, along the axial direction X of the annular body 51, at least one puncture hole 512 is provided on both side walls of the capsule cavity 510. The sealing ring specifically includes a first sealing ring 532 and a second sealing ring 533. Along the axial direction X of the annular body 51, the first sealing ring 532 is provided on the first side wall of the annular body 51, and covers all the puncture holes 512 on the corresponding side. The second sealing ring 533 is provided on the second side wall of the annular body 51 opposite to the first side wall, and covers all the puncture holes 512 on the corresponding side. Among them, a puncture hole 512 can be provided on each side wall of the capsule cavity 510. The first side wall refers to the side wall of the annular body 51 facing the first shell 11.

[0153] In some embodiments, the surfaces of the annular body 51, the sealing band 531, the first sealing ring 532, or the second sealing ring 533 are provided with a plurality of identification information 513, with each identification information 513 corresponding to each capsule cavity 510. Thus, during the rotation of the annular body 51, the identification information 513 can be used to implement a counting function to determine the usage of the powder capsules 9 within the powder inhaler. The identification information 513 can be a series of numbers or letters, allowing the user to determine the number of uninhaled powder capsules 9 or the number of inhaled powder capsules 9 based on the identification information 513.

[0154] Specifically, multiple consecutive digital markings, such as natural numbers from 0 to 15, 0 to 20, or 0 to 30, can be provided on the second sidewall of the annular body 51 by silk-screen printing, engraving, laser engraving, mold engraving, or stickers. The multiple digital markings are arranged in a ring shape. The consecutive digital markings rotate at the same angle as the annular body 51. During the lid opening process, each time the lid 4 rotates a preset angle, the annular body 51 rotates the same angle, and the value of the digital marking exposed through the second lid 4 is successively reduced by 1.

[0155] When the digital identification exposed by the second cover body 4 shows "0", continue to rotate the cover body 4, and the value of the digital identification exposed by the cover body 4 remains unchanged. This function is realized by the driven wheel 52 and the driving wheel 62 of the transmission assembly 6; for the specific implementation method, please refer to the relevant description of the transmission assembly 6 below.

[0156] In one embodiment, with reference to FIG9 , the annular body 51 has a receiving groove 514 on at least one side along its axial direction X, and a desiccant is contained in the receiving groove 514. The desiccant is used to dry the powder capsule 9 in the capsule cavity 510. The desiccant can be any existing desiccant used for moisture-proofing, such as soda lime, quicklime, potassium carbonate (KCO3), sodium carbonate (Na2CO3), sodium bicarbonate (NaHCO3), potassium bicarbonate (KHCO3) and calcium carbonate (CaCO3), or a mixture of several ingredients. The desiccant can be in the form of powder or block. In this embodiment, the sealing assembly can also include a third sealing ring 534, which covers the notch of the receiving groove 514 to prevent the desiccant from falling out.

[0157] The passive component includes a driven wheel 52, which is arranged on the inner side of the annular body 51. The transmission component 6 is linked to the powder delivery mechanism 5 through the driven wheel 52. In conjunction with Figure 11, Figure 11 is a structural schematic diagram of the first first sawtooth of the driven wheel provided by an embodiment of the present application being engaged with the driving wheel; the driven wheel 52 has a plurality of first saw teeth 521, and the plurality of first saw teeth 521 are arranged at equal intervals along the circumferential direction of the driven wheel 52, and along the circumferential direction of the driven wheel 52, the first spacing L between the first first saw tooth 521 and the last first saw tooth 521 satisfies the following formula: L>a+2b, so as to form a design of empty teeth on the driven wheel 52. Among them, a is the width of the first saw tooth 521 along the circumferential direction of the driven wheel 52; b is the distance between two adjacent first saw teeth 521 along the circumferential direction of the driven wheel 52.

[0158] The driven wheel 52 may be an internal gear connected to the annular body 51 and meshed with the transmission assembly 6 , so that the internal gear rotates in conjunction with the annular body 51 during the rotation of the transmission assembly 6 .

[0159] Specifically, referring back to FIG8 , the driven wheel 52 has an extension arm 522 on one side, and the third sealing ring 534 has a through hole 535. The extension arm 522 of the driven wheel 52 passes through the through hole 535 and engages with the annular body 51, thereby securing the third sealing ring 534 between the driven wheel 52 and the annular body 51. The number of extension arms 522 can be two, three, four, or more to achieve a stable connection between the driven wheel 52 and the annular body 51.

[0160] Specifically, in conjunction with Figure 10b, Figure 10b is an EE-sectional view of the powder inhaler shown in Figure 1 provided by an embodiment of the present application; the shell assembly 1 also has a first limiter 113, and the other side surface of the driven wheel 52 has multiple second limiters 523. After each rotation of the cover body 4 by a certain angle, the first limiter 113 is engaged with one of the second limiters 523 to ensure that one of the capsule cavities 510 is aligned with the deaggregation cavity 21, thereby avoiding misalignment between the capsule cavity 510 and the deaggregation cavity 21, affecting the proportional distribution of the air intake during the inhalation process, and thus affecting the inhalation resistance and deaggregation effect.

[0161] The first limiting member 113 can be a limiting elastic arm formed on the first housing 11, and the second limiting member 523 can be a limiting groove provided on the driven wheel 52. The limiting elastic arm can be inserted into the limiting groove to achieve a snap connection between the two. Of course, in other embodiments, multiple second limiting members 523 can be provided on the first housing 11, and the first limiting member 113 can be provided on the driven wheel 52.

[0162] Specifically, the contact surfaces of the limiting spring arm and the limiting groove have similar shapes and there is a certain interference to ensure that the limiting spring arm and the limiting groove are in zero-match contact, that is, the limiting spring arm and the limiting groove are in zero-gap contact, thereby achieving relative motion position alignment of the capsule cavity 510 and the depolymerization cavity 21.

[0163] The plurality of second stoppers 523 are spaced apart along the circumference of the driven wheel 52; for example, they can be equally spaced. Each second stopper 523 corresponds to a capsule cavity 510, and along the radial direction of the annular body 51, the second stopper 523 is aligned with the corresponding capsule cavity 510. "Alignment" as used herein can mean that the orthographic projection of one structure falls within or completely overlaps with another structure, or that the two structures are coaxially arranged.

[0164] The powder delivery mechanism 5 typically includes powder capsules 9 preloaded into an annular body 51 for use with the other components of the powder delivery mechanism 5. Alternatively, multiple annular bodies 51 may be preloaded, each containing a powder capsule 9. This allows the powder delivery mechanism 5 to be replaced with a new annular body 51 and powder capsules 9 after the powder capsules 9 are used up, allowing the other components of the powder delivery mechanism 5 to be reused.

[0165] The following describes the assembly process of the powder delivery mechanism 5 .

[0166] First, multiple powder capsules 9 are sequentially installed into the multiple capsule cavities 510 of the annular body 51, and a clamp is provided on the arc surface of the annular body 51 along its circumferential direction. The contour of the clamp matches the circumferential contour of the annular body 51 and surrounds the arc surface of the annular body 51, thereby preventing the powder capsules 9 from falling out of the capsule cavity 510. Afterwards, the sealing tape 531 is fixed to the outer surface of the annular body 51 by heat melting or other means, and then the first sealing ring 532 and the second sealing ring 533 are respectively fixed to the first side wall and the second side wall of the annular body 51 by heat melting or other means. At the same time, a desiccant is placed in the receiving groove 514 of the annular body 51. Finally, the third sealing ring 534 and the driven wheel 52 are installed in sequence. The driven wheel 52 is fixed to the annular body 51 by snaps, screws or other means, and the third sealing ring 534 is pressed to seal the receiving groove 514 to prevent the desiccant from overflowing.

[0167] The powder delivery mechanism 5 provided in this embodiment achieves multi-dose delivery by providing multiple capsule cavities 510 on the annular body 51 and placing a powder capsule 9 within each capsule cavity 510. When the powder delivery mechanism 5 is used in a powder inhaler, there is no need to carry a separate row of packaged powder capsules. This avoids the problem of bulky, separate-carrying, and inconvenient carrying of the packaged rows of powder capsules. Furthermore, the user does not need to manually tear open the aluminum foil, remove the powder capsules, and manually place the powder capsules in the powder inhaler, simplifying operation and facilitating use. Furthermore, the powder delivery mechanism 5 utilizes a sealing assembly to cover at least the cavity opening and puncture hole 512 of the capsule cavity 510, thereby encapsulating and sealing the capsule cavity 510 and preventing the powder capsules 9 within the capsule cavity 510 from becoming damp.

[0168] (4) Transmission assembly 6

[0169] In conjunction with Figure 4, the transmission assembly 6 includes a ratchet 61 and a driving wheel 62. The second housing 12 has a second rotating shaft 125 on one side surface facing the first housing 11. The ratchet 61 has a first sleeve hole and is sleeved on the second rotating shaft 125 through the first sleeve hole, and can rotate along the circumferential direction of the second rotating shaft 125. Two clamping blocks 611 are specifically provided on the ratchet 61 and are located on opposite sides of the first sleeve hole. The driving wheel 62 has a second sleeve hole and is sleeved on the second rotating shaft 125 through the second sleeve hole, and can rotate along the circumferential direction of the second rotating shaft 125. The driving wheel 62 is specifically engaged with the driven wheel 52 to rotate in conjunction with the driven wheel 52. The driving wheel 62 can specifically be an external gear, and the driven wheel 52 can be an internal gear. Of course, the driving wheel 62 can also be an internal gear and the driven wheel 52 can be an external gear.

[0170] Specifically, see Figure 12, which is a schematic diagram illustrating the meshing of the last first serration of the driven wheel with the driving wheel according to one embodiment of the present application. The driving wheel 62 has a plurality of second serrations 621, which mesh with the first serrations 521. Along the circumferential direction of the driven wheel 52, the first spacing is greater than the spacing between two adjacent second serrations 621.

[0171] As shown in Figure 11, when the cover body 4 is in the first position, the driving wheel 62 engages with the first first serration 521 of the driven wheel 52. However, due to friction between the sealing strip 531 and the annular body 51, the last tooth of the open tooth design cannot be fully engaged, resulting in premature tooth disengagement, thus causing the final rotation angle to fail to reach the predetermined value. Therefore, as shown in Figure 12, when the cover body 4 is in the second position, to ensure that the annular body 51 is fully engaged during the final opening of the cover and does not prematurely disengage and fail to reach the desired position, the angle of the driven wheel 52 is offset, causing the driving wheel 62 and the driven wheel 52 to interfere with each other's motion. That is, the last first serration 521 of the driving wheel 62 and the driven wheel 52 is not completely free of air, but rather retains some interference, but this interference does not achieve engagement. The interference amount is greater than 0° and less than [360° / (Q*2 / 3)], where Q is the total number of teeth on the driven wheel 52. The purpose of this design is to ensure that the annular body 51 can rotate a predetermined angle in the last rotation, so as to ensure that the corresponding capsule cavity 510 is exactly aligned with the depolymerization cavity 21.

[0172] When identification information 513 displays "0," each time the lid is opened, the second serrations 621 of the driving wheel 62 interfere with the first serrations 521 of the driven wheel 52. However, this interference does not drive the annular body 51 to rotate. However, due to the plastic deformation of the first and second serrations 521, the second serrations 621 of the driving wheel 62 can pass through this interference. Furthermore, this principle ensures that the annular body 51 reaches the predetermined position when the number jumps from "1" to "0."

[0173] The following describes the process in which the cover 4 drives the driven component 6 and the powder delivery mechanism 5 to rotate.

[0174] 4 , during the lid opening process (i.e., the counterclockwise rotation process in FIG. 4 ), the pawl of ratchet wheel 61 begins to rotate counterclockwise under the linkage of lid body 4 and gradually abuts drive wheel 62. As a result, the pawl drives the drive wheel 62 to rotate. The drive wheel 62 engages with the driven wheel 52, thereby driving the driven wheel 52 to rotate. The driven wheel 52 further drives the annular body 51 to rotate, so that the multiple capsule cavities 510 on the annular body 51 are sequentially connected to the depolymerization chamber 21, thereby achieving the switching of capsule cavities 510 and the dressing change process.

[0175] It is understood that the travel of the lid body 4 from the first position to the second position (i.e., the lid opening travel) includes an idle travel and a loaded travel following the idle travel. During the idle travel, the lid body 4 drives the ratchet 61 to rotate, but the pawl of the ratchet 61 has not yet contacted the drive wheel 62, and the drive wheel 62 does not rotate, nor does it cause the powder delivery mechanism 5 to rotate. During the loaded travel, the lid body 4 triggers the drive wheel 62 of the transmission assembly 6 to rotate, thereby causing the annular body 51 of the powder delivery mechanism 5 to rotate, thereby causing the multiple capsule cavities 510 to sequentially communicate with the depolymerization chamber 21, thereby completing the delivery of the multiple powder capsules 9.

[0176] During the lid opening load stroke, each time the lid body 4 rotates a certain angle, the annular body 51 of the powder delivery mechanism 5 is linked to rotate by a predetermined angle α by controlling the reduction ratio between the driving wheel 62 and the driven wheel 52, so that the next capsule cavity 510 rotates to communicate with the depolymerization cavity 21. The predetermined angle α satisfies the following formula: α = 360° / (n+1), where n is the number of capsule cavities 510 on the annular body 51 of the powder delivery mechanism 5.

[0177] In some embodiments, referring to FIG5 , the first shell 11 has a buckle position 115, and the driving wheel 62 has an outer rib position 622. After the cover opening load stroke, the cover opening stroke also includes an over-covering stroke. In the over-covering stroke, the outer rib position 622 can pass through the buckle position 115 to complete the cover opening process and lock the relative position of the cover body 4 and the first shell 11, and a prompt sound will be emitted during the process of the outer rib position 622 passing the buckle position 115 to prompt the user that the cover body 4 is in the second position. By setting the over-covering stroke, the resistance between the annular body 51 and the sealing belt 531 can be overcome, so that the annular body 51 reaches the predetermined position and stays at the final position (such as the 100° position).

[0178] As shown in FIG5 , the outer rib 622 forms a step portion. During the process of opening the cover, the pawl of the ratchet 61 abuts against the step portion to drive the driving wheel 62 to rotate. During the process of closing the cover, the pawl of the ratchet 61 is squeezed and deformed by the outer rib 622, thereby making a sound.

[0179] In the open lid idle stroke, the cover body 4 rotates at an angle of 5° to 30°, for example, 5°, 10°, 15°, 20°, 25°, 28°, or 30°. In the open lid loaded stroke, the cover body 4 rotates at an angle of 70° to 75°, for example, 70°, 72°, or 75°. In the open lid overstroke, the cover body 4 rotates at an angle of 3° to 8°, for example, 3°, 5°, or 8°. For example, the rotation angle range of the cover body 4 is 28° during the empty opening stroke, 72° during the loaded opening stroke, and 5° during the over-opening stroke. When the cover body 4 is in the first position, the rotation angle of the cover body 4 is 0°. During the opening process, the cover body 4 begins to rotate, and after rotating to 28°, the pawl of the ratchet 61 abuts the drive wheel 62. The cover body 4 continues to rotate and rotates to the 100° position, which is the final resting position of the cover body 4. The cover body 4 then continues to rotate to 105°, causing the outer rib 622 to pass through the buckle position 115, thereby locking the relative position of the cover body 4 and the first shell 11 and emitting a warning sound.

[0180] (5) Take-up wheel assembly 7

[0181] Referring to Figure 13, Figure 13 is a schematic diagram of the structure of a powder inhaler provided by one embodiment of the present application, with the cover in the second position and the second housing removed. The take-up reel assembly 7 includes an intermediate gear 71 and a take-up reel 72. The intermediate gear 71 meshes with the annular body 51 and the take-up reel 72, respectively. There can be two intermediate gears 71, each meshing with the other, with one meshing with the second ring portion 5b of the annular body 51 and the other meshing with the take-up reel 72. The number of intermediate gears 71 can be set according to actual needs. The first end of the sealing tape 531 is connected to the take-up reel 72. During the rotation of the annular body 51, the annular body 51 rotates in conjunction with the intermediate gear 71, which in turn rotates in conjunction with the take-up reel 72, causing the sealing tape 531 to separate from the annular body 51 at the annular rib 24 and be wound around the take-up reel 72.

[0182] The transmission ratio between the annular body 51 and the belt reel 72 is a first ratio, and the transmission ratio between the driven wheel 52 and the driving wheel 62 is a second ratio, wherein the first ratio is greater than the second ratio. In this way, the sealing belt 531 can be kept taut.

[0183] In a specific embodiment, referring to Figures 14 to 16 , Figure 14 is a cross-sectional view of a take-up pulley provided in one embodiment of the present application. Figure 15 is a schematic diagram of a disassembled take-up pulley provided in one embodiment of the present application. Figure 16 is a schematic diagram of the structure of the rotating member of the take-up pulley shown in Figure 15 . The take-up pulley 72 includes a housing 73, a third rotating shaft 74, a first elastic member 75, a rear seat 76, and a rotating member 77.

[0184] The rotating member 77 meshes with the intermediate gear 71. As shown in Figures 15 and 16, the rotating member 77 has an insertion hole, the inner circumference of which is provided with a first limiting groove 771. The first limiting groove 771 extends along the axial direction of the rotating member 77 and extends to a side surface of the rotating member 77 along its axial direction X. The third rotating shaft 74 is sleeved within the insertion hole of the rotating member 77, and the outer wall of the third rotating shaft 74 has a second limiting rib 741, which engages with the first limiting groove 771 to limit the relative position of the third rotating shaft 74 and the rotating member 77 along the circumferential direction of the third rotating shaft 74.

[0185] The rear seat 76 is sleeved onto the rotating member 77, and its contact surface with the rotating member 77 is an inclined surface. The third rotating shaft 74 passes through the rear seat 76 to connect with the rotating member 77. The inner wall of the outer shell 73 has a third limiting rib 731, and the outer wall of the rear seat 76 has a second limiting groove 761. The outer shell 73 is sleeved onto the outer wall of the rear seat 76, and the third limiting rib 731 is embedded in the second limiting groove 761 to limit the relative position of the outer shell 73 and the rear seat 76 along the circumferential direction of the rear seat 76. The first elastic member 75 is sleeved on the outer side of the third rotating shaft 74 and elastically compresses between the rear seat 76 and the outer shell 73 along the axial direction of the third rotating shaft 74 to increase the friction between the rear seat 76 and the rotating member 77. Specifically, as shown in Figure 14, along the axial direction of the third rotating shaft 74, one end of the first elastic member 75 abuts the rear seat 76, and the other end abuts the outer shell 73. The first elastic member 75 can be a spring.

[0186] The specific assembly process of the tape reel 72 is as follows: with the rotating part 77 as the base, the rear seat 76, the first elastic part 75 and the shell 73 are placed in sequence from bottom to top, and finally the third rotating shaft 74 is inserted from the upper hole of the shell 73, and passes through the insertion hole of the rotating part 77 according to the alignment structure, and finally the third rotating shaft 74 is rotated, and the two second limiting ribs 741 on the third rotating shaft 74 enter the first limiting groove 771 of the rotating part 77 to complete the assembly.

[0187] The working principle of the take-up wheel 72 is as follows: as the number of turns of the sealing tape 531 wound around the take-up wheel 72 increases, the maximum diameter of the structure formed by the take-up wheel 72 and the sealing tape 531 wound thereon will gradually increase, and the angle of rotation of the take-up wheel 72 is the same each time, so the length of the sealing tape 531 wound each time will gradually increase, and the length of the sealing tape 531 needs to be compensated, otherwise the tension on the sealing tape 531 will gradually increase, and eventually it will break. The housing 73 and the rotating member 77 can rotate relative to each other. The rear seat 76 is provided with two second limiting grooves 761 that cooperate with the two third limiting ribs 731 of the housing 73. When the rear seat 76 rotates, the housing 73 is also rotated. The rear seat 76 and the rotating member 77 are in contact with each other at an angle, and there is friction between them. This friction is determined by the materials of the rear seat 76 and the rotating member 77 and the elastic force of the first elastic member 75. When the tension on the sealing belt 531 is greater than the friction between the rear seat 76 and the rotating member 77, the rotating member 77 continues to rotate while the rear seat 76 remains stationary, thereby ensuring that the tension on the sealing belt 531 does not continue to increase, thereby preventing the sealing belt 531 from being broken. The friction between the rear seat 76 and the rotating member 77 is much smaller than the force that would cause the sealing belt 531 to be broken.

[0188] (6) Piercing mechanism 8

[0189] Referring to Figures 17 to 19, Figure 17 is a schematic structural diagram of the piercing mechanism provided in one embodiment of the present application; Figure 18 is a CC-direction sectional view of the powder inhaler shown in Figure 2 provided in one embodiment of the present application; and Figure 19 is a DD-direction sectional view of the powder inhaler shown in Figure 7 provided in one embodiment of the present application. The piercing mechanism 8 is provided on the shell assembly 1 and is used to be inserted into the capsule cavity 510 and pierce the powder capsule 9 in the capsule cavity 510 so that the powder in the powder capsule 9 can be discharged. The number of piercing mechanisms 8 is related to whether a piercing hole 512 is provided on one side wall or both side walls of each capsule cavity 510 along the axial direction X of the annular body 51. If a piercing hole 512 is provided on one side wall of each capsule cavity 510 along the axial direction X of the annular body 51, the number of piercing mechanisms 8 is one. If each capsule cavity 510 is provided with puncture holes 512 on both sides of the annular body 51 along the axial direction X, there are two puncture mechanisms 8, one on each side of the annular body 51 along the axial direction X, and inserted into the puncture holes 512 on the corresponding side to puncture the powder capsule 9; this is used as an example in the embodiments of this application. For ease of understanding, the following embodiments of this application are described using the puncture mechanism 8 located on the first side of the annular body 51 as an example.

[0190] As shown in Figure 17, the piercing mechanism 8 includes a mounting seat 81, a piercing member 82, a protective member 83, and a second elastic member 84. The mounting seat 81 is connected to the first housing 11 and can slide relative to the first housing 11 to insert the piercing member 82 into the capsule cavity 510. Specifically, as shown in Figure 18, the mounting seat 81 has a retaining member 811. The first housing 11 has a chute 114. The retaining member 811 engages with the groove wall of the chute 114 and can slide along the extension direction of the chute 114 to achieve a sliding connection between the piercing mechanism 8 and the first housing 11. The retaining member 811 limits the sliding process of the piercing mechanism 8 to prevent the piercing mechanism 8 from falling off the first housing 11. In a specific embodiment, a portion of the mounting seat 81 is exposed from the first housing 11 and serves as a button. The user can manually press or press the button to drive the piercing mechanism 8 to slide relative to the first housing 11, thereby passing through the piercing hole 512 and inserting it into the capsule cavity 510.

[0191] The protective member 83 and the piercing member 82 are respectively disposed on the mounting seat 81 and both extend in the first direction X. Specifically, as shown in FIG18 , the mounting seat 81 has a mounting post 812 having a mounting hole. One end of the piercing member 82 is inserted into and fixed in the mounting hole, and the other end extends away from the mounting seat 81 along the first direction X to form an insertion end. The insertion end of the piercing member 82 is used to pass through the piercing hole 512 of the annular body 51 and into the capsule cavity 510 to pierce the powder capsule 9.

[0192] In one specific embodiment, referring to Figures 20 and 21 , which are schematic structural diagrams of the piercing member 82 provided herein from different perspectives, the insertion end has a first inclined surface 821 extending from the end of the insertion end closest to the mounting seat 81 to the end facing away from the mounting seat 81 along a first direction X. The first inclined surface 821 has an inclination angle β of 1°-60°; for example, β can be 20°, 30°, or 60°. Forming the first inclined surface 821 at the insertion end reduces resistance to piercing the powder capsule 9, facilitating easier penetration of the powder capsule 9 by the piercing member 82.

[0193] Furthermore, in another specific embodiment, referring to FIG. 20 , the insertion end further comprises a second inclined surface 822, which extends along the first direction X to the end of the insertion end facing away from the mounting seat 81, and intersects with the first inclined surface 821. A second inclined surface 822 is provided on each side of the first inclined surface 821 to further reduce penetration resistance.

[0194] Of course, the insertion end of the piercing member 82 can also be a structural member with a needle-shaped end, such as a lancet. The piercing member 82 can be cylindrical as a whole.

[0195] 17 and 19 , along the first direction X, the end of the protective member 83 facing away from the mounting seat 81 protrudes beyond the end of the piercing member 82 facing away from the mounting seat 81. Thus, when the piercing mechanism 8 is pressed to pierce the powder capsule 9, the protective member 83 contacts the first sidewall of the annular body 51 before the piercing member 82. This prevents the piercing member 82 from being damaged by striking the sidewall of the annular body 51, which could affect the piercing function of the piercing member 82 and cause abnormalities during piercing of the powder capsule 9, preventing the powder from being discharged.

[0196] In a specific embodiment, as shown in Figures 9 and 19 , an escape hole 515 is formed along at least one side of the piercing hole 512 along the circumference of the annular body 51. The escape hole 515 is used to avoid the piercing mechanism's protective member 83. When the protective member 83 of the piercing mechanism 8 is aligned with the escape hole 515 of the powder delivery mechanism 5, pressing the mounting seat 81 of the piercing mechanism 8 allows the piercing member 82 of the piercing mechanism 8 to be inserted into the capsule cavity 510, thereby piercing the powder capsule 9 therein. If the protective member 83 is misaligned with the escape hole 515, pressing the mounting seat 81 causes the protective member 83 to abut against the sidewall of the escape hole 515, thereby preventing the piercing member 82 from abutting against the annular body 51 and protecting the piercing member 82.

[0197] Specifically, referring to Figure 9 , along the circumference of the annular body 51, a relief hole 515 is provided on either side of the puncture hole 512, with the openings of the relief holes 515 and the openings of the puncture hole 512 facing the same direction. This ensures that when the puncture mechanism 8 moves in the first direction X, the protective member 83 and the puncture member can be inserted into the relief holes 515 and puncture hole 512, respectively. The number of protective members 83 matches the number of relief holes 515, with each relief hole 515 receiving one protective member 83. Specifically, a relief hole 515 can be provided between two adjacent puncture holes 512 to reduce the impact of the openings on the strength of the annular body 51.

[0198] Specifically, the extension length of the avoidance hole 515 along the first direction X is not less than the length m of the insertion end of the piercing member 82 along the first direction X, so as to ensure that the insertion end of the piercing member 82 is completely inserted into the capsule cavity 510 .

[0199] The number of the protective members 83 can be one, two or more. Preferably, the number of the protective members 83 can be two, and the two protective members 83 are arranged on both sides of the piercing member 82 opposite to each other.

[0200] As shown in Figure 18, the second elastic member 84 is sleeved around the outside of the piercing member 82. One end of the second elastic member 84 is sleeved and fixed to the outside of the mounting post 812, while the other end abuts the first shell 11. When the mounting seat 81 is pressed, the second elastic member 84 is elastically compressed. When the pressing force of the mounting seat 81 is released, the mounting seat 81 returns to its original position due to the elastic restoring force of the second elastic member 84, simultaneously moving the piercing member 82 out of the capsule cavity 510 to prevent the piercing member 82 from obstructing the next rotation of the annular body 51.

[0201] Specifically, at least one fourth limiting rib is provided on the outer side of the mounting post 812, and the second elastic member 84 is interference-fitted with the fourth limiting rib to fix the relative position of the second elastic member 84 and the mounting seat 81. The second elastic member 84 may be a spring.

[0202] The following describes the specific operating process of the piercing mechanism 8 in a powder inhaler: After the lid is opened, that is, the lid body 4 is rotated a certain angle to align one capsule cavity 510 of the annular body 51 with the deaggregation cavity 21, the mounting bases 81 of the piercing mechanism 8 on both sides of the powder delivery mechanism 5 are pressed simultaneously until the mounting bases 81 cannot slide anymore and then released. At this point, the piercing member 82 of the piercing mechanism 8 passes through the piercing hole 512 and enters the capsule cavity 510, piercing the powder capsule 9 with a sound of breaking through the shell. After releasing the mounting bases 81, they automatically return to their original position due to the elastic restoring force of the second elastic member 84.

[0203] The piercing mechanism 8 provided in this embodiment is provided with a protective member 83, with the end of the protective member 83 facing away from the mounting seat 81 protruding beyond the end of the piercing member 82 facing away from the mounting seat 81. Thus, when the piercing mechanism 8 is inserted into the capsule cavity 510 of the powder delivery mechanism 5 to pierce the powder capsule 9, the protective member 83 contacts the first side wall of the annular body 51 before the piercing member 82. This prevents the piercing member 82 from being damaged by striking the first side wall of the annular body 51, which could affect the piercing function of the piercing member 82 and cause abnormalities during piercing of the powder capsule 9, resulting in failure to discharge powder.

[0204] It will be appreciated that the powder inhaler of the present application includes a plurality of suction strokes, each of which is used to draw powder from a powder capsule 9. Each suction stroke includes a dosing stroke, a piercing stroke, and a reset stroke. In the dosing stroke, the capsule cavity 510 exposes the powder capsule 9 therein. In the piercing stroke, the piercing member 82 of the piercing mechanism 8 inserts into the capsule cavity 510 and pierces the powder capsule 9. In the reset stroke, the piercing mechanism 8 automatically resets.

[0205] The powder inhaler provided in this embodiment provides a plurality of capsule cavities 510 on the powder delivery mechanism 5, so that powder capsules 9 can be placed in the plurality of capsule cavities 510 respectively. During the rotation of the powder delivery mechanism 5, the plurality of capsule cavities 510 can be sequentially connected with the deaggregation chamber 21, so that the powder capsules 9 in each capsule cavity 510 can enter the deaggregation chamber 21 and be inhaled by the user. In this way, not only is it unnecessary to carry the powder capsules 9 separately, thus avoiding the inconvenience of carrying the powder capsules 9, but it also eliminates the need to tear open the aluminum foil package and manually place the powder capsules 9 in the powder inhaler, thereby simplifying the operation. At the same time, by causing the cover body 4 to rotate in conjunction with the transmission assembly 6, the transmission assembly 6 rotates in conjunction with the powder delivery mechanism 5 during the rotation process, and the powder delivery mechanism 5 further rotates in conjunction with the take-up wheel assembly 7 during the rotation process, thereby separating the sealing belt 531 of the powder delivery mechanism 5 from the annular body 51 and winding it around the take-up wheel assembly 7, thereby exposing the powder capsules 9 in the capsule cavity 510. When the capsule cavity 510 is connected to the deaggregation chamber 21, the powder capsules 9 in the capsule cavity 510 can enter the deaggregation chamber 21. This powder inhaler realizes the linkage between the cover body 4, the powder delivery mechanism 5, the transmission assembly 6, and the take-up wheel assembly 7, and is more simple to operate.

[0206] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A powder inhaler comprising: housing assembly; a depolymerization mechanism having a depolymerization cavity; a suction nozzle, connected to the depolymerization chamber; a cover body, which can be configured to a first position to cover the nozzle; or configured to a second position to expose the nozzle; A powder delivery mechanism comprises an annular body and a sealing belt, wherein the annular body has a plurality of capsule cavities for accommodating powder capsules; a transmission assembly, connected to the cover and the annular body respectively; When the cover body is configured from the first position to the second position, the cover body is linked to the transmission assembly to rotate, and the transmission assembly is linked to the annular body to rotate during the rotation process, so that the multiple capsule cavities are connected to the depolymerization cavity in sequence; A take-up wheel assembly, wherein the first end of the sealing belt is connected to the take-up wheel assembly, and the second end is wound around the annular body along the circumferential direction of the annular body and covers the cavity openings of the multiple capsule cavities; during the rotation of the annular body, the annular body is linked to the take-up wheel assembly to rotate, thereby separating the sealing belt from the annular body and winding it around the take-up wheel assembly.

2. The powder inhaler according to claim 1, wherein The stroke of the cover body from the first position to the second position includes an open cover idle stroke and an open cover load stroke after the open cover idle stroke; within the open cover idle stroke, the cover body does not link the powder delivery mechanism to rotate; within the open cover load stroke, the cover body triggers the transmission assembly to rotate, so as to link the powder delivery mechanism to rotate, thereby making the multiple capsule cavities connected to the depolymerization cavity in sequence.

3. The powder inhaler according to claim 2, wherein The housing assembly has a buckle position, and the transmission assembly has an external rib position; The stroke of the cover body from the first position to the second position also includes an over-opening stroke after the cover opening load stroke; within the over-opening stroke, the outer rib passes through the buckle position, and a prompt sound is emitted, and the relative position of the cover body and the shell assembly is locked.

4. The powder inhaler according to claim 3, wherein The cover body is rotatably connected to the shell assembly; and within the cover opening idle stroke, the rotation angle range of the cover body is 5°-30°; within the cover opening load stroke, the rotation angle range of the cover body is 70°-75°; within the cover opening over stroke, the rotation angle range of the cover body is 3°-8°.

5. The powder inhaler according to claim 1, wherein One of the shell assembly and the powder delivery mechanism has a first limiting member, and the other has a plurality of second limiting members; when the capsule cavity is aligned with the depolymerization cavity, the first limiting member is engaged with one of the second limiting members.

6. The powder inhaler according to claim 5, wherein The powder delivery mechanism comprises: An annular body, wherein the plurality of capsule cavities are formed on an outer peripheral surface of the annular body and are spaced apart along a circumferential direction of the annular body; a passive component connected to the annular body and configured to rotate the annular body in conjunction with the annular body so that the plurality of capsule cavities are sequentially connected to the depolymerization cavity; The first limiting member is formed on the shell component; the plurality of second limiting members are formed on the passive component, and one second limiting member corresponds to one capsule cavity.

7. The powder inhaler according to claim 6, wherein The housing assembly further comprises a support member, which elastically abuts against the inner circumferential surface of the annular body.

8. The powder inhaler according to claim 7, wherein The inner circumferential surface of the annular body has a plurality of grooves arranged at intervals along its circumferential direction; At least a portion of the support member extends to a side where the inner circumference of the annular body is located, and a surface of the support member facing the annular body has a protrusion, which is embedded in the groove and has an interference fit with the groove.

9. The powder inhaler according to claim 6, wherein The passive component includes a driven wheel, the driven wheel having a plurality of first saw teeth, the plurality of first saw teeth being arranged at equal intervals along the circumferential direction of the driven wheel, and along the circumferential direction of the driven wheel, a first spacing L between a first first saw tooth and a last first saw tooth satisfies the following formula: L>a+2b; wherein a is the width of the first sawtooth along the circumferential direction of the driven wheel; b is the distance between two adjacent first sawtooths along the circumferential direction of the driven wheel; The transmission assembly includes a driving wheel; the driving wheel has a plurality of second saw teeth, the second saw teeth are engaged with the first saw teeth, and along the circumferential direction of the driven wheel, the first spacing is greater than the spacing between two adjacent second saw teeth.

10. The powder inhaler according to claim 9, wherein When the cover is in the second position, there is interference between the driving wheel and the last first serration of the driven wheel, and the interference amount is greater than 0° and less than [360° / (Q*2 / 3)]; Q is the total number of teeth of the driven wheel.

11. The powder inhaler according to claim 9, wherein The transmission assembly also includes a ratchet, which is connected to the cover body; in an idle stroke of opening the cover, the cover body is linked to the ratchet to rotate, and the ratchet is not in contact with the driving wheel; in a loaded stroke of opening the cover, the cover body is linked to the ratchet to continue rotating, the ratchet is in contact with the driving wheel, and drives the driving wheel to rotate.

12. The powder inhaler according to claim 9, wherein The belt reel assembly includes an intermediate gear and a belt reel; the intermediate gear is engaged with the annular body and the belt reel respectively; the first end of the sealing tape is connected to the belt reel; Wherein, the transmission ratio between the annular body and the belt pulley is a first ratio; the transmission ratio between the driven wheel and the driving wheel is a second ratio, and the first ratio is greater than the second ratio.

13. The powder inhaler according to claim 1, wherein Also includes: The piercing mechanism includes a mounting seat, a protective member and a piercing member, wherein the protective member and the piercing member are respectively arranged on the mounting seat and both extend in a first direction; and along the first direction, the end of the protective member facing away from the mounting seat protrudes beyond the end of the piercing member facing away from the mounting seat.

14. The powder inhaler according to claim 1, wherein The housing assembly includes a first housing and a second housing, wherein the first housing and the second housing cooperate to form a receiving chamber, wherein the powder delivery mechanism, the transmission assembly, and the take-up pulley assembly are respectively disposed within the receiving chamber, and a portion of the transmission assembly is exposed through the first housing to be connected to the cover body; the take-up pulley assembly is located on a side of the powder delivery mechanism facing the second housing; and the cover body is further rotatably connected to the second housing; Wherein, one of the transmission assembly and the first shell has a first clamping member, and the other has a first clamping groove. When the cover is configured to the first position, the first clamping member is embedded in the first clamping groove.

15. The powder inhaler according to claim 14, wherein One of the side surface of the cover body facing the second shell and the side surface of the second shell facing the cover body has a protrusion, and the other has a first limiting rib. During the process of the cover body being configured from the second position to the first position, the protrusion passes over the first limiting rib.

16. A powder delivery mechanism comprising: An annular body having a plurality of capsule cavities along its circumferential outer surface, the capsule cavities extending along the axial direction of the annular body; and at least one side wall of the capsule cavity along the axial direction of the annular body having a puncture hole; a plurality of powder capsules disposed in the plurality of capsule cavities; The sealing component at least covers the cavity opening of the capsule cavity and the puncture hole.

17. The powder delivery mechanism of claim 16, wherein: The sealing assembly comprises: a sealing belt, which is wound around the annular body along the circumferential direction of the annular body and covers the opening of the capsule cavity; A sealing ring is arranged on the side wall of the annular body along the axial direction of the annular body and covers each of the puncture holes.

18. The powder delivery mechanism of claim 17, wherein: At least one puncture hole is formed on both side walls of the capsule cavity along the axial direction of the annular body; The sealing ring includes a first sealing ring and a second sealing ring; along the axial direction of the annular body, the first sealing ring is arranged on the first side wall of the annular body and covers all the puncture holes on the corresponding side; the second sealing ring is arranged on the second side wall of the annular body and covers all the puncture holes on the corresponding side.

19. The powder delivery mechanism of claim 16, wherein: Along the circumferential direction of the annular body, an avoidance hole is opened on at least one side of the puncture hole, and the avoidance hole is used to avoid the protective part of the puncture mechanism.

20. The powder delivery mechanism of claim 19, wherein: Along the circumferential direction of the annular body, an avoidance hole is respectively opened on both sides of the puncture hole, and the openings of the avoidance hole and the opening of the puncture hole face the same direction.

21. The powder delivery mechanism of claim 16, wherein: The annular body has a receiving groove on at least one side along the axial direction thereof, and the receiving groove contains a desiccant.

22. The powder delivery mechanism of claim 21, wherein: The sealing assembly further includes a third sealing ring, which covers the notch of the accommodating groove.

23. The powder delivery mechanism of claim 22, wherein: Also includes: A passive assembly includes a follower having an extending arm; The third sealing ring has a through hole, and the extension arm of the follower passes through the through hole and is engaged with the annular body, thereby fixing the third sealing ring between the follower and the annular body.

24. The powder delivery mechanism of claim 16, wherein: Also includes: a passive component, comprising a driven member, the driven member being connected to the annular body and configured to drive the annular body to rotate along its circumferential direction; The follower has a second limiting member, which is used to cooperate with the first limiting member of the shell assembly, so that when the capsule cavity and the depolymerization cavity are aligned, the first limiting member is engaged with one of the second limiting members.

25. The powder delivery mechanism of claim 16, wherein: The bottom wall of the capsule cavity is in a sealed state.

26. The powder delivery mechanism of claim 16, wherein: The plurality of capsule cavities are centrally symmetrically distributed along the circumferential direction of the annular body.

27. The powder delivery mechanism of claim 16, wherein: Each capsule cavity contains one powder capsule.

28. A powder inhaler comprising: housing assembly; The powder delivery mechanism is detachably disposed in the housing assembly and is the powder delivery mechanism according to any one of claims 1 to 12.

29. A piercing mechanism comprising: Mounting seat; The protective member and the piercing member are respectively provided on the mounting seat and both extend in the first direction; Furthermore, along the first direction, one end of the protection member facing away from the mounting seat protrudes beyond one end of the piercing member facing away from the mounting seat.

30. The piercing mechanism of claim 29, wherein: The number of the protective members is two, and the two protective members are oppositely arranged on two sides of the piercing member.

31. The piercing mechanism of claim 29, wherein: The end of the piercing member facing away from the mounting seat forms an insertion end, and the insertion end has a first inclined surface. Along the first direction, the first inclined surface extends from the end of the insertion end close to the mounting seat to the end facing away from the mounting seat; and the inclination angle of the first inclined surface is 1°-60°.

32. The piercing mechanism of claim 31, wherein: The insertion end further has a second inclined surface, which extends along the first direction to an end of the insertion end away from the mounting seat, and the second inclined surface intersects with the first inclined surface.

33. The piercing mechanism of claim 29, wherein: The mounting seat has a mounting post, the mounting post has a mounting hole, and one end of the piercing member is inserted and fixed in the mounting hole; The piercing mechanism further includes: a second elastic member, which is sleeved on the outside of the piercing member, and one end of the second elastic member is sleeved and fixed on the outside of the mounting column, and the other end is used to abut against the housing assembly.

34. A powder delivery mechanism comprising: An annular body having a capsule cavity for receiving a powder capsule; A puncture hole is provided on at least one side wall along the axial direction of the annular body, and the puncture member of the puncture mechanism is inserted into the capsule cavity through the puncture hole; an avoidance hole is provided on at least one side of the puncture hole along the circumferential direction of the annular body, and the avoidance hole is used to avoid the protective member of the puncture mechanism.

35. The powder delivery mechanism of claim 34, wherein: The capsule cavity is provided with a puncture hole on both side walls along the axial direction of the annular body; each puncture hole is provided with an avoidance hole on both sides along the circumferential direction of the annular body, and one avoidance hole is used to accommodate one protective member.

36. The powder delivery mechanism of claim 34 or 35, wherein: The annular body is provided with a plurality of capsule cavities, and the plurality of capsule cavities are arranged at intervals along the circumferential direction of the annular body on the outer peripheral surface of the annular body.

37. A powder inhaler comprising: The piercing mechanism is the piercing mechanism according to any one of claims 1 to 33; A powder delivery mechanism, comprising the powder delivery mechanism according to any one of claims 34 to 36; In which, when the protective member of the piercing mechanism is aligned with the avoidance hole of the powder delivery mechanism, the mounting seat of the piercing mechanism is pressed, and the piercing member of the piercing mechanism can be inserted into the capsule cavity to pierce the powder capsule in the capsule cavity; when the protective member is misaligned with the avoidance hole, the mounting seat is pressed, and the protective member abuts against the side wall of the avoidance hole, thereby limiting the abutment between the piercing member and the powder delivery mechanism.

38. The powder inhaler of claim 37, wherein The extension length of the avoidance hole is not less than the length of the insertion end of the piercing member along the first direction.

39. The powder inhaler of claim 37, wherein Also includes: The powder delivery mechanism is detachably arranged in the shell component; a portion of the mounting seat is exposed from the shell component and serves as a button.

40. A powder inhaler comprising: housing assembly; a depolymerization mechanism having a depolymerization cavity; a powder delivery mechanism disposed in the housing assembly and having a plurality of capsule cavities for storing powder capsules; the powder delivery mechanism being movable relative to the deaggregation cavity so that the plurality of capsule cavities are sequentially communicated with the deaggregation cavity; Wherein, one of the shell assembly and the powder delivery mechanism has a first limiting member, and the other has a plurality of second limiting members; when the capsule cavity and the depolymerization cavity are aligned, the first limiting member is engaged with one of the second limiting members.

41. The powder inhaler of claim 40, wherein The powder delivery mechanism comprises: An annular body, wherein the plurality of capsule cavities are formed on an outer peripheral surface of the annular body and are spaced apart along a circumferential direction of the annular body; a passive component connected to the annular body and configured to rotate the annular body in conjunction with the annular body so that the plurality of capsule cavities are sequentially connected to the depolymerization cavity; The first limiting member is formed on the shell component; the plurality of second limiting members are formed on the passive component, and one second limiting member corresponds to one capsule cavity.

42. The powder inhaler of claim 41, wherein The first limiting member includes a limiting elastic arm; the second limiting member is a limiting groove.

43. The powder inhaler of claim 41, wherein The passive component includes a driven wheel, which is connected to the inner circumference of the annular body; along the axial direction of the annular body, the multiple second limiting members are distributed in a ring shape on the side surface of the driven wheel facing the shell component; and the second limiting members are aligned with the corresponding capsule cavity along the radial direction of the annular body.

44. The powder inhaler of claim 41, wherein Also includes: a suction nozzle, connected to the depolymerization chamber; A transmission assembly is provided in the housing assembly and is connected to the passive assembly, and is used to link the passive assembly to rotate during the rotation process; The cover body can be configured to a first position to cover the suction nozzle; or configured to a second position to expose the suction nozzle; wherein, during the process of the cover body rotating from the first position to the second position, the cover body is linked to the rotation of the transmission assembly and drives the first limit member to disengage from the current second limit member, thereby driving the annular body to rotate.

45. The powder inhaler of claim 41, wherein The housing assembly further comprises a support member, which elastically abuts against the inner circumferential surface of the annular body.

46. ​​The powder inhaler of claim 44, wherein The inner circumferential surface of the annular body has a plurality of grooves arranged at intervals along its circumferential direction; At least a portion of the support member extends to a side where the inner circumference of the annular body is located, and a surface of the support member facing the annular body has a protrusion, which is embedded in the groove and has an interference fit with the groove.

47. The powder inhaler of claim 46, wherein The shell assembly includes a first shell and a second shell, the first shell and the second shell cooperate to form a accommodating cavity, and the powder delivery mechanism is arranged in the accommodating cavity; the first limiting member is arranged on the first shell; the support member is arranged on the second shell and extends toward the first shell.

48. The powder inhaler of claim 41, wherein The deagglomeration mechanism further comprises an annular convex rib, which abuts against the outer peripheral surface of the annular body and surrounds an entrance to form the deagglomeration cavity. The powder capsules in the capsule cavity enter the deagglomeration cavity through the entrance.

49. The powder inhaler of claim 40, wherein The depolymerization chamber has an external air inlet and an internal air inlet; during the suction process, external air enters the depolymerization chamber through the external air inlet and the internal air inlet in sequence, and forms a rotating airflow; The powder capsule in the capsule cavity enters the deagglomeration cavity under the action of the pressure difference between the capsule cavity and the deagglomeration cavity, and rotates under the action of the rotating airflow, so that the powder in the powder capsule overflows and enters the suction nozzle; The air intake area of ​​the inner air intake is 10 to 30 mm. 2 , the air intake area of ​​the outer air inlet is not less than the air intake area of ​​the inner air inlet.

50. The powder inhaler of claim 49, wherein The nozzle has multiple grids, and the powder in the deagglomeration chamber enters the nozzle through the grids; and the air inlet area of ​​the grids is 0.5 to 2 mm 2 The total air intake area of ​​all the grids is 10 to 60 mm 2 The outlet area of ​​the nozzle is 50 to 100 mm 2 .

51. The powder inhaler of claim 50, wherein The distance between the bottom of the capsule cavity and the grid of the suction nozzle is smaller than the length of the powder capsule.