Capsule-type dry powder inhaler

Abstract

The invention discloses a capsule type dry powder inhaler, which comprises a capsule chamber, an upper chamber located at one end of the capsule chamber, and a lower chamber located at the other end of the capsule chamber, wherein an upper puncture mechanism is arranged on the upper chamber, a lower puncture mechanism and an air suction component are arranged on the lower chamber, the upper puncture mechanism comprises an upper hollow needle and an upper button, and the lower puncture mechanism comprises a lower hollow needle and a lower button; a first limiting hole for allowing the upper hollow needle to pass through is arranged on the side of the upper chamber close to the capsule chamber, the upper hollow needle is located in the first limiting hole, a second limiting hole for allowing the lower hollow needle to pass through is arranged on the side of the lower chamber close to the capsule chamber, and the lower hollow needle is located in the second limiting hole; when the upper and lower buttons are pressed simultaneously, the upper and lower hollow needles move toward the capsule chamber, the upper hollow needle is connected to the upper chamber, and the lower hollow needle is connected to the air suction component. The puncture mechanism is connected to the airflow channel, which solves the problem of drug residue in the capsule in the prior art.

Description

Technical Field

[0001] The present invention relates to an inhalation device for fine dry powder, and further relates to an inhalation device for capsule-type dry powder. Background Art

[0002] Pulmonary inhalation preparations refer to preparations that are administered by special devices and exert systemic or local effects through the deep respiratory tract, cavities, mucous membranes, etc. Currently, such preparations used clinically include aerosols, dry powder inhalers, and nebulizer inhalers, which are used to treat respiratory diseases such as asthma and chronic obstructive pulmonary disease.

[0003] Dry powder inhalers are devices that contain drug powder. Patients inhale through the inhaler, which disperses the powder into mist and then inhales it into the trachea or lungs to exert its therapeutic effect. For example, the long-acting antimuscarinic drug tiotropium bromide is a quaternary ammonium salt that is poorly absorbed orally and is suitable for inhalation administration. It is administered once a day (inhaled 18ug / day) and the effect can last for more than 24 hours.

[0004] Existing inhalers release drugs by destroying the capsule, mainly by puncturing the capsule to release the drug from the pinhole. In order to ensure that the user really inhales, it is recommended that the user check the capsule after use.

[0005] There are other ways to destroy the capsule, such as the dry powder inhaler disclosed in patent CN103096955B. This inhaler uses a dispersion chamber to separate the capsule from top to bottom, thereby releasing the medicine. Because this structure needs to separate the capsule, a certain space is required so that the capsule can rotate with the airflow in the dispersion chamber to release the medicine, so the dispersion chamber must be large enough, which will increase the volume of the inhaler accordingly.

[0006] In order to solve the problem of drug residue in dry powder capsules and the problem of inhalers being too large and inconvenient to use, an inhaler is provided that directly connects an air inlet channel and an air inhalation channel to the capsule. Summary of the invention

[0007] The invention provides a capsule type dry powder inhaler, which provides a method of connecting a puncture mechanism with an air flow channel, thereby solving the problem of medicine residue in the capsule in the prior art.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A capsule-type dry powder inhaler comprises a capsule chamber, an upper chamber located at one end of the capsule chamber, and a lower chamber located at the other end of the capsule chamber, wherein an upper puncture mechanism is arranged on the upper chamber, and a lower puncture mechanism and an inhalation component are arranged on the lower chamber, wherein the upper puncture mechanism comprises an upper hollow needle and an upper button for driving the upper hollow needle to move, and the lower puncture mechanism comprises a lower hollow needle and a lower button for driving the lower hollow needle to move;

[0010] A first limiting hole is provided on the upper chamber near the capsule compartment to allow the upper hollow needle to pass through, and the upper hollow needle is located in the first limiting hole; a second limiting hole is provided on the lower chamber near the capsule compartment to allow the lower hollow needle to pass through, and the lower hollow needle is located in the second limiting hole;

[0011] When the upper button and the lower button are pressed simultaneously, the upper hollow needle and the lower hollow needle move toward the capsule compartment, the upper hollow needle is connected with the upper chamber, and the lower hollow needle is connected with the suction component.

[0012] In order to increase the absorption of the lungs, the drugs in dry powder inhalers are mostly fine powders of about 5um, and the dosage of the drugs is small and the effect is fast. The capsules of capsule-type dry powder inhalers, such as capsule No. 3, can be loaded with drugs of different weights of 180mg, 240mg, and 360mg according to the density of the drugs. The dosage of dry powder inhalers is only at the ug level, and it is only a few dozen milligrams including the excipients. The capsules of dry powder inhalers are not full of drugs, and there is extra space.

[0013] The capsule-type dry powder inhaler of the present invention is provided with an upper chamber, a lower chamber and a capsule chamber located between the upper chamber and the lower chamber.

[0014] The upper chamber is provided with a first limiting hole and an upper puncturing mechanism on one side close to the capsule compartment. The upper puncturing mechanism includes an upper hollow needle and an upper button for driving the upper hollow needle to move. The upper hollow needle is located in the first limiting hole. The upper button can drive the upper hollow needle to move in the first limiting hole toward the capsule compartment. The upper hollow needle is hollow. When the upper button is pressed, the upper button drives the upper hollow needle to move toward the capsule compartment and pass through the first limiting hole. Further, the tip of the upper hollow needle enters the capsule compartment and punctures the capsule located in the capsule compartment. At this time, the upper hollow needle is connected to the upper chamber. Further, the punctured capsule is connected to the upper chamber through the upper hollow needle.

[0015] A second limiting hole is provided on one side of the lower chamber close to the capsule compartment.

[0016] The upper part is provided with a lower button, a lower hollow needle and an air suction component in the lower chamber. A through hole is provided near the capsule compartment in the lower chamber, and the lower hollow needle can enter the capsule compartment through the through hole under the drive of the lower button. An air suction component is provided inside the lower chamber. When the lower button is pressed, the lower hollow needle enters the capsule compartment and punctures the capsule. At this time, the lower hollow needle is connected to the air suction component.

[0017] When the upper button and the lower button are pressed at the same time, the upper hollow needle and the lower hollow needle enter the capsule compartment at the same time to puncture the capsule. Since the upper hollow needle is connected to the upper chamber and the lower hollow needle is connected to the air inhalation component, the capsule is now connected to the outside world. The patient inhales through the air inhalation component, and the powder in the capsule enters the patient's body along the airflow direction.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention directly enters the capsule compartment through the upper hollow needle and the lower hollow needle, so that the powder in the capsule directly enters the patient's body along the lower hollow needle and the suction component, reducing the process of releasing the powder after puncturing the capsule in the prior art and improving the efficiency of inhaling the powder.

[0020] 2. The present invention keeps the hollow needle in the capsule by keeping the button pressed, thereby improving the efficiency of puncturing the capsule and avoiding the problem of drug residue in the capsule in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0023] Figure 3 Another cross-sectional schematic diagram of the present invention;

[0024] Figure 4 for Figure 3 A magnified schematic diagram of B;

[0025] Figure 5 This is a schematic diagram of the upper chamber;

[0026] Figure 6 It is a schematic diagram of the lower chamber;

[0027] Figure 7 is a schematic diagram of the base of the lower chamber;

[0028] Figure 8 A schematic diagram of a ratchet;

[0029] Fig. 9 It is a schematic diagram of the counting component;

[0030] Fig.10 This is a schematic diagram of the capsule room;

[0031] Fig.11 Schematic diagram of the upper chamber opening when loading the capsule;

[0032] Fig.12 A schematic diagram of a vent hole of the present invention;

[0033] In the figure, upper chamber 1, capsule chamber 2, lower chamber 3, capsule 4, vent 5, spring 6, buckle 7, upper cover 11, upper chamber base 12, upper puncture mechanism 13, upper chamber 14, shaft pin 15, upper sealing gasket 21, capsule chamber wall 22, bolt 23, shaft sleeve 24, lower sealing gasket 25, lower chamber base 31, lower cover 32, lower puncture mechanism 33, preload spring 34, steel ball 35, suction pipe 36, suction port 37, mouth cover 38, lower chamber 39, upper button 1 31. first limiting hole 132. upper hollow needle 133. upper spring 134. indicator number 221. ratchet 222. bolt hole 223. steel ball hole 224. ratchet through hole 225. slot 226. capsule compartment 227. connecting rod 311. lower button 331. second limiting hole 332. lower hollow needle 333. lower spring 334. connecting capillary 361. lower air inlet pipe 362. upper air inlet port 1321. air inlet through hole 1331. lower air outlet port 3331. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below through specific embodiments:

[0035] A capsule-type dry powder inhaler comprises a capsule chamber 2, an upper chamber 1 located at one end of the capsule chamber 2, and a lower chamber 3 located at the other end of the capsule chamber 2, wherein the upper chamber 1 is provided with an upper puncture mechanism 13, the lower chamber 3 is provided with a lower puncture mechanism 33 and an inhalation component, the upper puncture mechanism 33 comprises an upper hollow needle 133 and an upper button 131 for driving the upper hollow needle 133 to move, and the lower puncture mechanism 33 comprises a lower hollow needle 333 and a lower button 331 for driving the lower hollow needle 333 to move;

[0036] A first limiting hole 132 is provided on the upper chamber 1 near the capsule chamber 2 to allow the upper hollow needle 133 to pass through, and the upper hollow needle 133 is located in the first limiting hole 132. A second limiting hole 332 is provided on the lower chamber 3 near the capsule chamber 2 to allow the lower hollow needle 333 to pass through, and the lower hollow needle 333 is located in the second limiting hole 332.

[0037] When the upper button 131 and the lower button 331 are pressed simultaneously, the upper hollow needle 133 and the lower hollow needle 333 move toward the capsule chamber 2, the upper hollow needle 131 is connected with the upper chamber 1, and the lower hollow needle 333 is connected with the suction assembly.

[0038] The air intake assembly includes an air intake pipe 36 , an air intake port 37 connected to one end of the air intake pipe 36 , a lower air intake pipe 362 connected to the other end of the air intake pipe 36 , and a connecting capillary 361 connected to the lower air intake pipe 362 .

[0039] The lower hollow needle 333 is provided with a lower air inlet 3331 . When the lower button 331 is pressed, the lower air inlet 3331 is connected to the connecting capillary 361 .

[0040] The upper hollow needle 133 is provided with an air inlet hole 1331 , and the first limiting hole 132 is provided with an upper air inlet port 1321 . When the lower button 131 is pressed, the air inlet hole 1331 is communicated with the upper air inlet port 1321 .

[0041] An upper sealing gasket 21 is disposed on a side of the upper chamber 1 close to the capsule chamber 2 , and a lower sealing gasket 25 is disposed on a side of the lower chamber 3 close to the capsule chamber 2 .

[0042] The capsule chamber 2 includes a capsule chamber wall 22 and a capsule compartment 227 .

[0043] There are multiple capsule bins 227. When there are multiple capsule bins 227, the capsule-type dry powder inhaler further includes a counting assembly arranged on the capsule chamber 2 and the lower chamber 3. The counting assembly includes a ratchet 222 located at the lower edge of the capsule chamber wall 22, a steel ball hole 224 arranged on the side of the capsule chamber 2 close to the lower chamber 3, a preload spring 34 arranged on the side of the lower chamber 3 close to the capsule chamber 2, a steel ball 35, and an indication number 221 arranged on the capsule chamber wall 2. The capsule chamber 2 includes a bolt 23 and a shaft sleeve 24.

[0044] like Figure 1 As shown, the inhaler of the present invention comprises an upper chamber 1, a capsule chamber 4, and a lower chamber 3. An upper piercing mechanism 13 is provided on the upper chamber 1, and a lower piercing mechanism 33 is provided on the lower chamber 3. The upper piercing mechanism 13 and the lower piercing mechanism 33 are arranged opposite to each other, and can pierce the capsule 4 placed in the capsule chamber 2.

[0045] Figure 2As shown, the upper chamber 1 also includes an upper cover 11, an upper chamber base 12, and an upper sealing gasket 21. The upper cover 11, the upper chamber base 12, and the upper sealing gasket 21 form an upper chamber 14. The upper puncture mechanism 13 of the upper chamber 1 includes an upper button 131, an upper hollow needle 133, a first limiting hole 132, and an upper spring 134. The first limiting hole 132 is arranged on the side of the upper chamber 1 close to the capsule chamber 2, and the upper hollow needle 133 is located in the first limiting hole 132. The tip of the upper hollow needle 133 faces the capsule chamber 2, and the other end is connected to the upper button 131. The upper button 131 includes a first pressing portion that can constitute a part of the upper cover 11, a first connecting portion connected to the upper hollow needle 133 located in the upper chamber 14, and a first overlapping portion that can move up and down on the upper chamber base 12. The range area where the first overlapping portion can move on the upper chamber base 12 is the first limiting groove. By pressing the first pressing part, the entire upper button 131 moves toward the capsule chamber 2, driving the upper hollow needle 133 to move toward the capsule chamber 2, and the tip of the upper hollow needle 133 passes through the first limiting hole 132, enters the capsule chamber 2, and punctures the capsule 4. The first overlap portion moves to the limited position in the first limiting groove, which is the deepest distance that the upper hollow needle 133 enters the capsule chamber 2. In addition, an upper spring 134 is arranged in the first limiting hole 132, which plays a role in limiting the deepest distance that the upper hollow needle 133 enters the capsule chamber 2, and also plays a role in returning the upper puncture mechanism.

[0046] The lower chamber 3 also includes a lower cover 32, a lower chamber base 31, and a lower sealing gasket 25. The lower puncture mechanism 33 of the lower chamber 3 includes a lower button 331, a lower hollow needle 333, a second limiting hole 332, and a lower spring 334. The second limiting hole 332 is arranged on the side of the lower chamber 3 close to the capsule chamber 2, and the lower hollow needle 333 is located in the second limiting hole 332. The tip of the lower hollow needle 333 faces the capsule chamber 2, and the other end is connected to the lower button 331. The lower button 331 includes a second pressing portion that can constitute a part of the lower cover 32, a second connecting portion connected to the lower hollow needle 333, and a second overlapping portion that can move up and down on the lower chamber base 31. The range area in which the second overlapping portion can move on the lower chamber base 31 is the second limiting groove. By pressing the second pressing part, the entire lower button 331 moves toward the capsule chamber 2, driving the lower hollow needle 333 to move toward the capsule chamber 2, and the tip of the lower hollow needle 333 passes through the second limiting hole 332, enters the capsule chamber 2, and punctures the capsule 4. The second overlap portion moves to a limited position in the second limiting groove, which is the deepest distance that the lower hollow needle 333 enters the capsule chamber 2. In addition, a lower spring 334 is arranged in the second limiting hole 332, which plays a role in limiting the deepest distance that the lower hollow needle 333 enters the capsule chamber 2, and also plays a role in returning the lower puncturing mechanism 33.

[0047] The lower chamber 3 also includes an inhalation mechanism, which is arranged inside the lower chamber 3 and includes an inhalation tube 36 and an inhalation port 37. When the lower button 331 is pressed, the inhalation tube 36 is connected to the lower hollow needle 333. A sleeve extends inwardly from the inhalation port 37 and is sleeved on the outside of the inhalation tube 36. When not in use, it is in a retracted state. When in use, the length of the inhalation tube 36 can be extended to facilitate the patient to hold the inhalation port 37. A mouth cover 38 is arranged on the outside of the inhalation port 37.

[0048] Multiple capsules 4 can be placed in the capsule chamber 2. The capsule chamber 2 includes a sleeve 24 and a bolt 23. The outer portion of the sleeve 24 is the capsule chamber 2 wall. The sleeve 24 rotates around the bolt 23. The bolt 23 is fixed on the lower chamber base 31. When there are multiple capsules 4 in the capsule chamber 2, in order to ensure that the capsule 4 rotates between the upper hollow needle 133 and the lower hollow needle 333, a steel ball 35 and a preload spring 34 are provided at the connection between the upper chamber 1 and the capsule chamber 2.

[0049] An upper sealing pad 21 is arranged on the upper chamber 1 near the capsule chamber 2, and a lower sealing pad 25 is arranged on the lower chamber 3 near the capsule chamber 2, so as to ensure that the multiple capsules 4 are relatively sealed and dry.

[0050] like Figure 3 As shown, Figure 3 Another cross-sectional view shows that the upper puncture mechanism 13 further includes an air inlet hole 1331 disposed on the upper hollow needle 133 and an upper air inlet 1321 disposed on the first limiting hole 132. When the upper button 131 is pressed until the upper spring 134 cannot be compressed, the air inlet hole 1331 is connected to the upper air inlet 1321, and the upper hollow needle 133 is connected to the upper cavity 14.

[0051] like Figure 4 As shown, a lower air outlet 3331 is provided on the lower hollow needle 333. When the lower button 331 is pressed to the position where the lower spring 334 cannot be compressed, the lower air outlet 3331 is communicated with the air inlet pipe of the air suction component.

[0052] like Figure 5 As shown, the positions of the first limiting hole 132 and the upper air inlet 1321 inside the upper chamber 1. The upper chamber 1 is connected to the capsule 4 bin via an axle pin 15, and a connecting rod 311 is also provided on the axle pin 15. When there are multiple capsules 4, an indicator number 221 is provided on the wall of the capsule chamber 2 to identify the remaining number of capsules 4.

[0053] like Figure 6 As shown, the connection relationship between the air suction assembly and the second fiber hole in the lower chamber 3. The air suction pipe 36 is connected to the connecting suction pipe at one end away from the air suction port 37, and the other end of the connecting suction pipe is placed in the lower chamber 39. One end of the lower air inlet pipe 362 is connected to the connecting suction pipe, and the other end is connected to the second limiting hole 332.

[0054] like Figure 7 As shown, a spring piece 6 is arranged on the outer periphery of the lower chamber 3 .

[0055] like Figure 8 As shown, a ratchet 222 is provided at the lower edge of the wall of the capsule chamber 2 on the side where the capsule chamber 2 is connected to the lower chamber 3 .

[0056] like Fig. 9 As shown, the capsule chamber 2 is provided with a bolt 23 hole, a steel ball hole 224, and a ratchet through hole 225 near the lower chamber 3. The bolt 23 hole is used for the bolt 23 to be fixed to the lower chamber 3 after passing through the capsule chamber 2. The steel ball hole 224 is used in conjunction with the steel ball 35. When the capsule chamber 2 rotates, the steel ball 35 enters the steel ball hole 224, and the force of rotating the capsule chamber 2 will increase, which plays a role in marking that the capsule 4 has rotated between the upper puncture mechanism and the lower puncture mechanism 33. The ratchet through hole 225 facilitates the lower hollow needle 333 to enter the capsule chamber 2.

[0057] like Fig.10 As shown, a circle of slots 226 are provided on the wall of the capsule chamber 2 near one end of the upper chamber 1 for clamping the upper chamber 1. A plurality of capsule 4 bins are provided in the shaft sleeve 24. The capsule 4 bins are used to place capsules 4.

[0058] like Fig.11 As shown, the upper chamber 1 can be opened, and the capsule 4 is placed in the capsule 4 compartment of the capsule chamber 2, and one capsule 4 compartment can hold one capsule 4.

[0059] like Fig.12 As shown, vent holes 5 are provided on the outer walls of the upper chamber 1 and the lower chamber 3. These vent holes 5 are specifically opened at the upper chamber 14, which is conducive to air entering the upper chamber 14, and opened at the lower chamber 39, which is conducive to air entering the lower chamber 39.

[0060] The inhaler disclosed in the present invention has the following working principles: open the upper chamber 1, place the capsule 4 in the capsule 4 compartment, close the upper chamber 1, rotate the capsule chamber 2, and make the indication number 221 at the position of "4". Open the cover 38, pull out the inhalation port 37, press the upper button 131 and the lower button 331 at the same time, and the patient exhales and inhales by holding the inhalation port 37. After the end, release the upper button 131 and the lower button 331, and do not rotate the capsule 4 compartment. Rotate it again before the next use to make the unused capsule 4 between the upper puncture mechanism and the lower puncture mechanism 33. After all the capsules 4 in the capsule 4 compartment are used, open the upper chamber 1 to pour out the used capsules 4, and reload the capsules 4.

[0061] The upper chamber 1 of the inhaler of the present invention is connected to the capsule 4 chamber by a buckle 7, an axle pin 15, and a connecting rod 311. The capsule 4 is conveniently loaded and unloaded, and a sealing effect is achieved. An upper sealing pad 21 is arranged on the side of the upper chamber 1 close to the capsule chamber 2, and a lower sealing pad 25 is arranged on the side of the lower chamber 3 close to the capsule chamber 2.

[0062] The inhaler of the present invention is also provided with a counting assembly, which is arranged between the capsule chamber 2 and the lower chamber 3, and includes a ratchet 222, a spring 6, a steel ball 35, a preload spring 34, an indicator number 221, and a steel ball hole 224. The ratchet 222 is arranged at the lower edge of the wall of the capsule chamber 2, the spring 6 is arranged on the lower chamber 3, and the steel ball hole 224 is arranged on the side of the capsule chamber 2 close to the lower chamber 3. The ratchet 222 cooperates with the spring 6 to ensure that the capsule chamber 2 can only rotate in one direction, thereby preventing the use of the capsule 4 that has been punctured and used. The preload spring 34 and the steel ball 35 are arranged in the lower chamber 3 on one side of the capsule 4 compartment, and the preload spring 34 is placed below the steel ball 35. When the capsule chamber 2 is rotated, the steel ball 35 compresses the spring to contract. When it is rotated to the position of the steel ball hole 224, the steel ball 35 no longer compresses the spring, and the steel ball 35 is bounced into the steel ball hole 224, playing a limiting role. At this time, greater force is required to rotate, which also indicates that the capsule 4 to be used enters between the upper puncture mechanism 13 and the lower puncture mechanism 33.

[0063] Regarding sealing, the present invention can load multiple capsules 4 at one time. In order to prevent moisture absorption, the capsules 4 are sealed except for being connected to the outside when in use. First, each capsule 4 compartment is independent, and sealing pads are respectively provided at both ends of each capsule 4 compartment. Only when the capsule 4 compartment rotates to between the upper piercing mechanism 13 and the lower piercing mechanism 33, the capsule 4 compartment is in a non-sealed state.

[0064] Regarding the inhalation component, in order to increase the effect of inhaling the powder, the inhalation component is a venturi tube. Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Although the present invention is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A capsule-type dry powder inhaler, comprising a capsule chamber, an upper chamber located at one end of the capsule chamber, and a lower chamber located at the other end of the capsule chamber, characterized in that: The upper chamber is provided with an upper puncture mechanism, and the lower chamber is provided with a lower puncture mechanism and an air suction component, the upper puncture mechanism includes an upper hollow needle and an upper button for driving the upper hollow needle to move, and the lower puncture mechanism includes a lower hollow needle and a lower button for driving the lower hollow needle to move; A first limiting hole is provided on the upper chamber near the capsule chamber to allow the upper hollow needle to pass through, and the upper hollow needle is located in the first limiting hole; a second limiting hole is provided on the lower chamber near the capsule chamber to allow the lower hollow needle to pass through, and the lower hollow needle is located in the second limiting hole; When the upper button and the lower button are pressed simultaneously, the upper hollow needle and the lower hollow needle move toward the capsule chamber, the upper hollow needle is connected with the upper chamber, and the lower hollow needle is connected with the suction component.

2. A capsule-type dry powder inhaler according to claim 1, characterized in that: The air intake assembly comprises an air intake pipe, an air intake port connected to one end of the air intake pipe, a lower air intake pipe connected to the other end of the air intake pipe, and a connecting capillary pipe connected to the lower air intake pipe.

3. A capsule-type dry powder inhaler according to claim 2, characterized in that: The lower hollow needle is provided with a lower air inlet, and when the lower button is pressed, the lower air inlet is connected with the connecting capillary.

4. A capsule-type dry powder inhaler according to claim 1, characterized in that: The upper hollow needle is provided with an air inlet hole, and the first limiting hole is provided with an upper air inlet port. When the lower button is pressed, the air inlet hole is connected with the upper air inlet port.

5. A capsule-type dry powder inhaler according to claim 1, characterized in that: An upper sealing gasket is arranged on one side of the upper chamber close to the capsule chamber, and a lower sealing gasket is arranged on one side of the lower chamber close to the capsule chamber.

6. A capsule-type dry powder inhaler according to any one of claims 1 to 5, characterized in that: The capsule chamber comprises a capsule chamber wall and a capsule compartment.

7. A capsule-type dry powder inhaler according to claim 6, characterized in that: There are multiple capsule compartments.

8. A capsule-type dry powder inhaler according to claim 7, characterized in that: When there are multiple capsule compartments, the capsule-type dry powder inhaler further comprises a counting assembly arranged on the capsule chamber and the lower chamber.

9. A capsule-type dry powder inhaler according to claim 8, characterized in that: The counting assembly includes a ratchet located at the lower edge of the capsule chamber wall, a steel ball hole arranged on the capsule chamber side close to the lower chamber, a preload spring arranged on the lower chamber side close to the capsule chamber, a steel ball and an indication number arranged on the capsule chamber wall.

10. A capsule-type dry powder inhaler according to claim 9, characterized in that: The capsule chamber includes a bolt and a bushing.

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