A dry powder dosing device

Abstract

The present invention proposes a dry powder dosing device, comprising a dosing nozzle with a dosing channel, a housing containing an air supply mechanism, a drug storage compartment disposed above the housing, and a press-control mechanism. A dosing slider is disposed between the drug storage compartment and the air supply mechanism. The present invention utilizes the press-control mechanism to switch between a drug removal state and a drug delivery state. In the drug removal state, the dry powder in the drug storage compartment falls into a dosing trough on the dosing slider, enabling quantitative drug removal. In the drug delivery state, the dry powder in the dosing trough is delivered to the patient's mouth or nasal cavity by a vortex airflow generated by the air supply mechanism, enabling involuntary inhalation by the patient.

Description

Technical Field

[0001] The present invention relates to the field of medical products, in particular to a dry powder quantitative dosing device. Background Art

[0002] Existing dry powder delivery devices are divided into capsule type, blister type and reservoir type. Among them, the capsule type dry powder delivery device usually punctures the capsule and then delivers the drug through active inhalation by the patient. During the inhalation process, not only may fragments be inhaled, which affects health, but it is also very easy to fail to reach the dosage due to improper inhalation method. The reservoir type dry powder delivery device uses powder to store in an integrated drug storage reservoir. Each time the patient uses it, the drug is loaded by rotating the metering device, and the powder falls into the metering chamber by its own gravity or other mechanical thrust. The patient inhales the powder in the metering chamber into the respiratory system through inhalation.

[0003] CN102228725A proposes a dry powder dosing device that can dispense powdered medicine in batches and in fixed quantities, while also preventing outside air from entering the powder container and causing the powder to become damp. Specifically, the device comprises an inverted conical powder storage container, an annular manual rotating portion, a flow channel component, and a dosing metering unit, disposed on the upper portion of the housing. The flow channel component sequentially connects the air inlet, the dosing metering assembly, and the suction nozzle. By rotating the annular manual rotating portion, the powder storage container and the drying assembly are sequentially connected to the dosing groove on the dosing metering unit, enabling quantitative drug removal and drying. The annular manual rotating portion is then rotated again so that the drug inlet of the flow channel component is aligned with the dosing groove, and the patient inhales the powder through the suction nozzle, completing the dosing.

[0004] The above-mentioned drug delivery device requires active inhalation through the mouth and is not suitable for nasal delivery. In the field of nasal treatment and care, existing nasal medications are usually liquids, which are pressed to allow the drugs to enter the nasal cavity in a spray form. However, liquid drugs are easily lost after entering the nasal cavity. Although dry powder drugs can increase the deposition of drugs in the nasal cavity, they cannot achieve quantitative delivery, and there is no non-active nasal drug delivery device. Summary of the Invention

[0005] To solve the above problems, the present invention provides a dry powder quantitative dosing device.

[0006] The main contents of the present invention include:

[0007] A dry powder dosing device, comprising:

[0008] a dosing nozzle, the dosing nozzle comprising a dosing channel;

[0009] A housing, the housing comprising a housing cavity, wherein an air supply mechanism is provided in the housing cavity;

[0010] A medicine storage bin, comprising a medicine storage bin body and a medicine taking passage connected to the medicine storage bin body;

[0011] A dosage slider is disposed between the medicine storage bin and the air supply mechanism, and includes a quantitative groove body;

[0012] A press control mechanism, comprising a press unit and a control unit, wherein the press unit acts on the air supply mechanism to provide a vortex airflow; the control unit is connected to the dose slider, driving the dose slider to reciprocate in a first direction to switch the dispenser between a drug removal state and a drug administration state;

[0013] In the drug taking state, the quantitative tank body is connected to the drug taking channel, and the drug administration channel is closed; in the drug administration state, the quantitative tank body is connected to the drug administration channel and the air supply mechanism.

[0014] Preferably, the air supply mechanism includes an elastic airbag, a conduit and an atomizing core; the pressing unit is arranged above the elastic airbag, and the outlet of the elastic airbag is connected to the air hole of the atomizing core through the conduit.

[0015] Preferably, the control unit includes a cover plate covering the opening of the shell, and a first arc-shaped toggle groove is formed on the cover plate; the pressing unit includes a pressing body, and a pressing column and a toggle rod extend downward from the bottom of the pressing body, and the pressing column acts on the elastic airbag;

[0016] A second arc-shaped toggle groove is formed on one side of the dose slider, the toggle rod is arranged in the first toggle groove and the second toggle groove, and the first end of the first toggle groove and the first end of the second toggle groove are arranged to overlap each other up and down, and the angle between the tangent of the first toggle groove at its first end and the second direction is smaller than the angle between the tangent of the second toggle groove at its first end and the second direction.

[0017] Preferably, the cover plate includes a cover plate body, a cover plate edge extending downward from the edge of the lower surface of the cover plate body, and at least two edge opening grooves, wherein the cover plate edge is separated into at least one edge elastic wall by the edge opening grooves.

[0018] A locking column extends upward from the upper surface of the cover plate, and the locking column has a locking through hole. The pressing column passes through the locking through hole to act on the elastic airbag; the locking column is provided with at least one locking clearance groove extending along the axis, and the outer wall surface of the pressing column is provided with at least one locking ridge; in the dosing state, the locking ridge is arranged in the locking clearance groove.

[0019] Preferably, a first C-shaped support wall and a second C-shaped support wall are provided at the bottom of the shell, a plurality of support ridges extending in the axial direction are protruded from the bottom of the inner wall of the first support wall, and the elastic airbag is provided on the support ridges; the atomization core is provided on the second support wall; the conduit extends from the first support wall to the second support wall through the opening of the first support wall and the second support wall.

[0020] Preferably, the atomizing core comprises a core body, a first side wall is provided on the edge of the lower surface of the core body along the circumferential direction and the axial direction, a second side wall is provided on the inner side of the first side wall along the axial direction and the axial direction, and the second supporting wall is arranged between the first side wall and the second side wall;

[0021] A core pipe connected to the conduit is downwardly extended from the center of the lower surface of the core body, and the air hole of the atomizing core is opened at the center of the core body and connected to the core pipe.

[0022] Preferably, a circular first groove body and two second groove bodies are provided on the upper surface of the core body, the two second groove bodies are connected to the first groove body and are arranged tangent to the first groove body; the two second groove bodies are centrally symmetrical with respect to the circle point of the first groove body; the air hole of the atomizing core is provided at one end of the second groove body away from the first groove body.

[0023] Preferably, the air holes of the atomizing core are in a fan-shaped or trapezoidal shape.

[0024] Preferably, the drug delivery nozzle includes a nozzle housing, which covers the medicine storage chamber; the medicine storage chamber includes a medicine storage chamber with an open end and a medicine discharge pipe, the medicine discharge pipe is integrally formed with the medicine storage chamber, and passes through the medicine storage chamber to form a first pipe upward and a second pipe downward, the first pipe is connected to the drug delivery channel; the dosage slider is provided with a ventilation hole;

[0025] In the medication state, the air supply mechanism is connected to the second pipeline through the quantitative tank; in the medication removal state, the air supply mechanism is connected to the second pipeline through the ventilation hole.

[0026] Preferably, the dosage slider includes a first slider plate, a second slider plate and a connecting plate body connecting the first slider plate and the second slider plate, the quantitative groove body and the ventilation channel are opened on the first slider plate, the second slider plate is arranged above the first slider plate, the second slider includes a U-shaped guide groove, and the second pipe and the medicine removal channel are arranged in the U-shaped guide groove.

[0027] The beneficial effects of the present invention are as follows: the present invention proposes a dry powder quantitative drug delivery device, which realizes the switching between the drug removal state and the drug delivery state by pressing the control mechanism. In the drug removal state, the dry powder medicine in the drug storage bin falls into the quantitative groove body on the dosage slider, which can realize quantitative drug removal; in the drug delivery state, the dry powder medicine in the quantitative groove body is delivered to the patient's mouth or nasal cavity by the vortex airflow generated by the air supply mechanism, thereby realizing the patient's non-active inhalation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is an overall cross-sectional view of the present invention;

[0030] Figure 3 is a schematic structural diagram of the shell;

[0031] Figure 4 Schematic diagram of the structure of the cover;

[0032] Figure 5 Schematic diagram of the structure of the pressing unit;

[0033] Figure 6 It is a schematic diagram of the structure after the shell is hidden;

[0034] Figure 7 This is a schematic diagram of the structure after the shell and cover are hidden;

[0035] Figure 8 It is a schematic diagram of the structure of the dosage slider;

[0036] Figure 9 (a) is a schematic structural diagram of a medicine storage bin from one angle;

[0037] Figure 9(b) is a schematic structural diagram of the medicine storage bin from another angle;

[0038] Figure 10(a) is a schematic diagram of the overall structure of the atomizing core;

[0039] Figure 10(b) is a top view of the atomizing core;

[0040] FIG10( c ) is a bottom view of the atomizing core;

[0041] Figure 11 A perspective view of the pressing control mechanism from one angle;

[0042] Reference numerals:

[0043] 1-housing; 11-first supporting wall; 110-supporting ridge; 12-second supporting wall;

[0044] 2-dosing nozzle; 20-nozzle housing; 200-dosing channel;

[0045] 3-drug storage chamber; 30-drug storage chamber body; 300-drug extraction channel; 301-drug chamber cavity; 310-drug outlet pipe; 3101-first pipe; 3102-second pipe;

[0046] 4-dose slider; 400-dosing slot; 401-ventilation channel; 41-first slider plate; 410-second toggle slot; 42-second slider plate; 420-U-shaped guide slot; 43-connecting plate;

[0047] 5-pressing unit; 50-pressing body; 51-pressing column; 510-locking ridge; 52-shift lever;

[0048] 6-control unit; 60-cover plate; 600-first toggle slot; 601-cover plate body; 602-cover plate edge; 603-edge opening slot; 604-edge elastic wall; 61-locking column; 610-locking through hole; 611-locking clearance slot; 620-clearance hole;

[0049] 7-air supply mechanism; 70-elastic airbag; 71-conduit; 72-atomizing core; 720-air hole; 7200-first tank;

[0050] 7201 - second trough body; 722 - first side wall; 723 - second side wall; 724 - core pipe. DETAILED DESCRIPTION

[0051] The technical solution protected by the present invention is described in detail below with reference to the accompanying drawings.

[0052] The present invention proposes a dry powder dosing device, which is particularly suitable for dry powder administration in the nasal cavity and can achieve non-active inhalation administration and is easy to operate. Figures 1 to 11 A dry powder dosing device proposed in the present invention includes a shell 1, which includes a accommodating cavity with an upper opening, and an air supply mechanism 7, a dosage slider 4 and a medicine storage chamber 3 are arranged in the accommodating cavity; and a dosing nozzle 2 and a pressing control mechanism are also arranged above the shell 1, and the dosing nozzle 2 includes a nozzle shell 20, and the nozzle shell 20 covers the medicine storage chamber; wherein, the pressing control mechanism includes a pressing unit 5 and a control unit 6, wherein the pressing unit 5 can act on the air supply mechanism, so that the air supply mechanism can generate a vortex airflow to enable the dry powder medicine to be discharged, and the control unit 6 can drive the dosage slider to move linearly through a rotational motion.

[0053] In this embodiment, the drug storage chamber 3 also has an upper-open cavity structure. A cover plate 60 is embedded in the opening of the storage chamber. The cover plate 60 serves to cover the storage chamber, enclosing the aforementioned components within the housing 1. Furthermore, the cover plate 60, together with the dosage slider 4, enables the drug dispenser to switch between a drug administration mode and a drug removal mode under the control of the control unit 6. More specifically, the drug administration mode involves the delivery of a predetermined amount of dry powder medication into the patient's nasal cavity or mouth under the action of the vortex airflow; the drug removal mode involves the quantitative deposition of dry powder medication from the drug storage chamber 3 into the dosing slot 400 of the dosage slider 4.

[0054] The specific structure of each part will be introduced in detail below.

[0055] Please combine Figure 1 、 Figure 2 and Figure 3 . In order to stably place the various components in the shell 1, two C-shaped areas are provided at the bottom of the shell 1 - a first support wall 11 and a second support wall 12, wherein the openings of the first support wall 11 and the second support wall 12 are arranged opposite to each other to make way for the air supply mechanism 7; specifically, the air supply mechanism includes an elastic airbag 70, a conduit 71 and an atomizing core 72 connected in sequence, and the openings of the first support wall 11 and the second support wall 12 are used to make way for the conduit 71; a plurality of supporting ridges 110 are provided on the inner bottom of the first support wall 11 along the axial direction, and the first support wall 11 accommodates the elastic airbag 70 and part of the conduit 71 therein. Furthermore, when the pressing unit acts on the air supply mechanism 7, the supporting ridges 110 provide support for the elastic airbag 70; and the second support wall 12 accommodates the atomizing core 72 and part of the conduit 71 therein.

[0056] Specifically, referring to Figures 10(a)-(c), the atomizing core 72 includes a core body, and the lower surface edge of the core body is provided with a first side wall 722 extending circumferentially and axially, the inner side of the first side wall 722 is provided with a second side wall 723 extending axially and axially, and the second support wall 12 is arranged between the first side wall 722 and the second side wall 723.

[0057] At the same time, a core pipe 724 connected to the conduit extends downward from the center of the lower surface of the core body, and the air hole 720 of the atomizing core is opened at the center of the core body and connected to the upper end of the core pipe 724; the lower end of the core pipe 724 is connected to the elastic airbag 70 through the conduit 71.

[0058] Please combine Figure 4 、 Figure 5 as well as Figure 6、 Figure 7 、 Figure 8 and Figure 11 The cover 60 includes a cover body 601, a cover edge 602 extending downward from the edge of the lower surface of the cover body 601, and at least two edge opening grooves 603. The cover edge 602 is separated into at least one edge elastic wall 604 by the edge opening groove 603. A circle of fitting grooves is opened on the cover edge 602, and a circle of fitting protrusions is provided on the upper part of the inner wall of the shell 1, so that the cover 60 and the shell 1 can be fitted together. The purpose of providing the edge elastic wall 604 is to facilitate the removal of the cover. Only by pressing the shell corresponding to the edge elastic wall 604, the cover body 601 on this side can be pulled out, so that the other parts can also be pulled out accordingly.

[0059] In this embodiment, the cover plate 60 is designed as a whole. Since the pressing unit 5 needs to be above the elastic airbag 72, a clearance hole 620 is also opened on the cover plate 60 to enable the pressing unit 5 to move up and down in the clearance hole 620.

[0060] One of the most important functions of the cover plate is to receive the drive of the regulating unit 6 together with the dosage slider 4, thereby realizing the change of the drug dispenser between the drug administration state and the drug removal state. Specifically, a first toggle groove 600 is provided on the cover plate 60, and the first toggle groove 600 is arc-shaped; at the same time, a second toggle groove 410 is correspondingly provided on the dose slider 8, and the pressing unit 5 includes a toggle rod 52, which is configured in the first toggle groove 600 and the second toggle groove 410 at the same time. When in the dosing state, the toggle rod 52 is located at the first end of the first toggle groove 600 and the first end of the second toggle groove 410, that is, in the dosing state, the first end of the first toggle groove 600 and the first end of the second toggle groove 410 coincide axially. Since the position of the cover plate 60 is fixed, the toggle rod 52 can only move along the arc path of the first toggle groove 600. During the movement of the toggle rod 52, since the arc direction of the second toggle groove 410 is different from that of the first toggle groove 600, it can drive the dose slider 4 to achieve linear motion.

[0061] Specifically, please refer to Figure 11 ,have Figure 11 It can be seen that the arc shapes of the first toggle groove 600 and the second toggle groove 410 are different, and the second toggle groove 410 is located inside the circle where the first toggle groove 600 is located; Figure 7As shown, at this time, it is in the dosing state, the air hole 720 of the atomizing core is connected to the quantitative groove body 400 on the dose slider 4, and the quantitative groove body 400 is connected to the dosing channel. Figure 7 When the pressing unit 5 is rotated clockwise, the lever 52 pushes the dosage slider 4 toward the medicine storage chamber 3, so that the quantitative groove 400 of the dosage slider 4 is connected with the medicine extraction channel 300 of the medicine storage chamber 3, and the bottom of the quantitative groove 400 is closed by the upper surface of the atomization core 72; at the same time, the ventilation channel 401 of the dosage slider 4 is connected with the drug administration channel and the air hole 720 of the atomization core 72, so that external air enters the elastic airbag 70.

[0062] In addition, please combine Figure 4 and Figure 5 , a locking column 61 is extended upward from the upper surface of the cover plate 60 and the periphery of the give way hole 620, and the locking column 61 has a locking through hole 610, which is used to allow the pressing unit 5 to pass through and act on the elastic airbag 70; the pressing unit 5 specifically includes a pressing body 50, and a pressing column 51 and the shift rod 52 are extended downward from the bottom of the pressing body 50. The pressing column 51 extends downward from the center of the pressing body 50, and the shift rod 52 extends downward from the edge of the lower surface of the pressing body 50. The pressing column 51 passes through the locking through hole 610 and acts on the elastic airbag 70. At least one locking protrusion 510 extending in the axial direction is convexly provided on the outer peripheral surface of 51. At the same time, at least one locking clearance groove 611 extending along the axis is provided on the locking column 61. Through the configuration of the locking clearance groove 611 and the locking protrusion 510, the stroke of the pressing unit 5 can be limited when the medicine is taken out. In the medication state, the locking protrusion 510 is configured in the locking clearance groove 611, so that the locking column 61 no longer limits the stroke of the pressing unit 5, thereby squeezing the elastic airbag 70. The elastic airbag 70 is compressed and the gas therein forms a vortex airflow through the atomization core 72.

[0063] Please combine Figure 8 In this embodiment, the dosage slider 4 includes a first slider plate 41, a second slider plate 42, and a connecting plate body 43 connecting the first slider plate 41 and the second slider plate 42. The second slider plate 42 is arranged above the first slider plate 41. The quantitative groove 400 and the ventilation channel 401 are opened on the first slider plate 41. The second toggle groove 410 is opened at one end of the second slider plate 42, and the second slider plate includes a U-shaped guide groove 420. The medicine storage bin can be partially configured in the U-shaped guide groove 420 to activate a certain guiding effect for the linear motion of the dosage slider 4.

[0064] Please refer to Figure 9(a) and Figure 9(b). The drug storage bin 3 includes a drug storage bin body 30 and a drug dispensing channel 300 connected to the drug storage bin body 30. The opening and closing of the drug dispensing channel 300 is controlled by the movement of the dosage slider 4. When in the drug dispensing state, the drug dispensing channel 300 is connected to the quantitative tank body 400, and the bottom of the quantitative tank body 400 is also sealed by the upper surface of the atomization core 72 and will not leak out. The specific structure of the atomization core will be introduced in detail later; and when in the drug administration state, the dosage slider 8 makes a linear motion, so that the quantitative tank body 400 that takes the dry powder medicine moves to a position connected to the drug administration channel 200. At this time, the bottom of the drug dispensing channel 300 is sealed by the first sliding plate 41 and will not leak.

[0065] Specifically, the drug storage bin 3 includes a drug storage cavity 301 with an opening at one end and a drug discharge pipe 310. The drug discharge pipe 310 is used to connect the quantitative tank body 400 and the drug administration channel 200. In this embodiment, the drug discharge pipe 310 is integrally formed with the drug storage cavity 301. Specifically, a first pipe 3101 is formed upward from the upper part of the drug storage cavity 301, and a second pipe 3101 is formed downward. The first pipe 3101 is connected to the drug administration channel 200; the second pipe 3102 is connected to the quantitative tank body 400 and the ventilation channel 401; at the same time, the drug removal channel 300 is also formed by extending downward from the bottom of the drug storage cavity 301; in this embodiment, the drug removal channel 300 and the second pipe 3102 are a whole when observed from the outside, and are arranged in the U-shaped guide groove 420.

[0066] As shown in Figure 9(a), the medicine chamber cavity 301 is divided into two parts, and the first pipe 3101 is located at the center of the medicine chamber cavity 301. In this embodiment, the medicine extraction channel 300 is connected to one of the parts, and dry powder medicine is stored in the part; in other embodiments, dry powder medicine can also be stored in the other part, and another medicine extraction channel can also be opened at the same time. At the same time, a quantitative slot 400 is correspondingly provided on the dosage slider 4, and the linear reciprocating motion of the dosage slider 4 is driven by rotating the pressing unit to realize the switching between the two states of drug extraction and drug administration.

[0067] 10( a )-( c ), in order to provide a stable vortex airflow, the present invention has specially designed the air holes of the atomizing core. Specifically, a first trough body 7200 and several second trough bodies 7201 are provided on the upper surface of the core body, several second trough bodies 7201 are connected to the first trough body 7200, and several second trough bodies 7201 are extended outward from the edge of the first trough body 7200. Preferably, the first trough body 7200 is circular, the second trough body 7201 extends along the tangential direction of the first trough body 7200, and several second trough bodies 7201 are arranged in an approximately radial shape. The air hole 720 of the atomization core is provided at one end of the second trough body 7201 away from the first trough body 7200; the first trough body 7200 is used to seal the bottom of the quantitative trough body 400, and the air hole 720 of the atomization core is also connected to the quantitative trough body 400. When the elastic airbag 70 is pressurized and the gas inside it rushes out, the gas flow rate increases after passing through the air hole 720 of the atomization core located in the narrow, tangential second trough body, thereby changing the flow direction of the gas. Preferably, the number of the second trough bodies 7201 is two, and the two second trough bodies 7201 are centrally symmetrical with respect to the center of the first trough body 7200. When two identical tangential airflows converge, a vortex high-speed airflow is generated, thereby ejecting the dry powder medicine in the quantitative trough body 400 through the administration channel 200. Preferably, the shape of the air hole 720 of the atomizing core is fan-shaped or trapezoidal.

[0068] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dry powder dosing device, characterized in that: include: a dosing nozzle, the dosing nozzle comprising a dosing channel; A housing, the housing comprising a receiving cavity with an upper opening, wherein an air supply mechanism is provided in the receiving cavity; A medicine storage bin, comprising a medicine storage bin body and a medicine taking passage connected to the medicine storage bin body; A dosage slider is disposed between the medicine storage bin and the air supply mechanism, and includes a quantitative groove body; A pressing and regulating mechanism, the pressing and regulating mechanism comprising a pressing unit and a regulating unit, the pressing unit acting on the air supply mechanism to provide a vortex airflow; The regulating unit is connected to the dosage slider, and is configured to rotate and drive the dosage slider to reciprocate in a first direction, so as to switch the drug dispenser between a drug taking state and a drug administering state; In the drug dispensing state, the quantitative tank body is connected to the drug dispensing channel, and the drug dispensing channel is closed; in the drug dispensing state, the quantitative tank body is connected to the drug dispensing channel and the air supply mechanism; The air supply mechanism includes an elastic airbag, a conduit, and an atomizing core; the pressing unit is arranged above the elastic airbag, and the outlet of the elastic airbag is connected to the air hole of the atomizing core through the conduit; The control unit includes a cover plate covering the opening of the accommodating cavity, and a first arc-shaped shifting groove is formed on the cover plate; the pressing unit includes a pressing body, and a pressing column and a shifting rod extend downward from the bottom of the pressing body, and the pressing column acts on the elastic airbag; A second arc-shaped toggle groove is formed on one side of the dose slider, and the toggle rod is disposed in the first toggle groove and the second toggle groove. In the dosing state, the first end of the first toggle groove and the first end of the second toggle groove are vertically overlapped, and the angle between the tangent line of the first end of the first toggle groove and the second direction is smaller than the angle between the tangent line of the first end of the second toggle groove and the second direction; the second direction is perpendicular to the first direction. The drug storage chamber includes a drug storage cavity with an opening at one end and a drug discharge pipe. The drug delivery nozzle includes a nozzle housing, and the nozzle housing covers the drug storage cavity. The drug discharge pipe is integrally formed with the drug storage cavity and passes through the drug storage cavity to form a first pipe upward and a second pipe downward. The first pipe is connected to the drug delivery channel. The dosage slider is provided with a ventilation channel. In the medication state, the air supply mechanism is connected to the second pipeline through the quantitative tank; in the medication removal state, the air supply mechanism is connected to the second pipeline through the ventilation channel.

2. A dry powder dosing device according to claim 1, characterized in that: The cover plate includes a cover plate body, a cover plate edge extending downward from the lower surface edge of the cover plate body, and at least two edge opening grooves, wherein the cover plate edge is separated into at least one edge elastic wall by the edge opening grooves; A locking column extends upward from the upper surface of the cover plate, and the locking column has a locking through hole. The pressing column passes through the locking through hole to act on the elastic airbag; the locking column is provided with at least one locking clearance groove extending along the axis, and the outer wall surface of the pressing column is provided with at least one locking ridge; in the dosing state, the locking ridge is arranged in the locking clearance groove.

3. A dry powder dosing device according to claim 1, characterized in that: The bottom of the shell is provided with a first C-shaped support wall and a second C-shaped support wall. The bottom of the inner wall of the first support wall is provided with a plurality of support ridges extending in the axial direction, and the elastic airbag is provided on the support ridges; the atomizing core is provided on the second support wall; the conduit extends from the first support wall to the second support wall through the opening of the first support wall and the second support wall.

4. A dry powder dosing device according to claim 3, characterized in that: The atomizing core comprises a core body, wherein a first side wall is provided on the edge of a lower surface of the core body along the circumferential direction and the axial direction, a second side wall is provided on the inner side of the first side wall along the axial direction and the axial direction, and the second supporting wall is arranged between the first side wall and the second side wall; A core pipe connected to the conduit is downwardly extended from the center of the lower surface of the core body, and the air hole of the atomizing core is opened at the center of the core body and connected to the core pipe.

5. A dry powder dosing device according to claim 4, characterized in that: A first groove body and a plurality of second groove bodies are provided on the upper surface of the core body, wherein the plurality of second groove bodies are connected to the first groove body, and the plurality of second groove bodies are extended outward from the edge of the first groove body; the air hole of the atomizing core is provided at one end of the second groove body away from the first groove body.

6. A dry powder dosing device according to claim 5, characterized in that: The edge of the first trough body is an arc surface, and the plurality of second trough bodies extend along the tangent direction of the edge of the first trough body; the shape of the air hole of the atomizing core is fan-shaped or trapezoidal.

7. A dry powder dosing device according to claim 1, characterized in that: The dosage slider includes a first slider plate, a second slider plate, and a connecting plate body connecting the first slider plate and the second slider plate. The quantitative groove body and the ventilation channel are opened on the first slider plate. The second slider plate is arranged above the first slider plate. The second slider plate includes a U-shaped guide groove. The second pipe and the medicine removal channel are arranged in the U-shaped guide groove.

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