US-20260124408-A1 - POWDER INHALATION DEVICE AND MEDICAMENT BOX

US20260124408A1US 20260124408 A1US20260124408 A1US 20260124408A1US-20260124408-A1

Abstract

Disclosed is a powder inhalation device and a medicament box, the powder inhalation device including a carrier plate, a mouthpiece, an air intake slot and an air intake slot, where the carrier plate is formed with a through hole, and an annular groove is provided at an outer periphery of the through hole; the mouthpiece is disposed above the carrier plate; the capsule chamber is disposed under the carrier plate, and the capsule chamber also communicates with an outside atmosphere; air intake slots are spaced around the outer periphery of the through hole, each of the air intake slots including a horizontal slot section and an oblique slot section; and the horizontal slot section is located on an upper surface of the carrier plate, the oblique slot section is located on a sidewall of the annular groove, and the horizontal slot section is connected to the oblique slot section.

Inventors

Saihua Xu
Xiaoyuan Sun
Guangtao Zhao

Assignees

SUZHOU XINMAIDE MEDICAL DEVICE TECHNOLOGY CO., LTD

Dates

Publication Date: 20260507
Application Date: 20251230
Priority Date: 20230707

Claims (20)

1 . A powder inhalation device comprising: a carrier plate, a through hole being formed in the carrier plate, and an annular groove being provided at an outer periphery of the through hole; a mouthpiece, the mouthpiece being disposed above the carrier plate and communicating with the through hole; and a capsule chamber, the capsule chamber being disposed under the carrier plate and communicating with the through hole, the capsule chamber also communicating with an outside atmosphere for inhalation of a first airflow; wherein the powder inhalation device further comprises: at least one air intake slot, the air intake slot being provided at the outer periphery of the through hole, and the air intake slot comprising a horizontal slot section and an oblique slot section; wherein the horizontal slot section is located on an upper surface of the carrier plate, the oblique slot section is located on a sidewall of the annular groove, and the horizontal slot section is connected to the oblique slot section, so that a second airflow drawn from the air intake slot creates a turbulent flow at the annular groove.
2 . The powder inhalation device according to claim 1 , wherein the sum of surface areas of the horizontal slot section and the oblique slot section is positively related to an air intake amount of the air intake slot; an included angle between the horizontal slot section and the oblique slot section is negatively related to the air intake amount of the air intake slot; and/or three air intake slots are provided, the air intake slots being distributed circumferentially uniformly at the outer periphery of the through hole ( 101 ); and/or the air intake slot further comprises a draft slot section; wherein the draft slot section is located on the upper surface of the carrier plate and is disposed at an end of the horizontal slot section away from the oblique slot section, and the draft slot section and the horizontal slot section and the oblique slot section are integrally formed.
3 . The powder inhalation device according to claim 1 , wherein a sieve mesh is arranged between the mouthpiece and the carrier plate, the sieve mesh is located at the through hole, and the sieve mesh is configured to intercept large particles of powder that have not been broken up.
4 . The powder inhalation device according to claim 1 , wherein a sieve holder is provided inside the mouthpiece; the sieve holder is partially provided in the annular groove and forms an airflow channel with the air intake slot, and at least two first snap-fits are provided at an outer periphery of the sieve holder; the carrier plate is provided with at least two first snap-fit grooves, the first snap-fit grooves corresponding to and matching the first snap-fits; and the sieve holder is snap-fitted and fixed to the carrier plate by the first snap-fits and the first snap-fit groove, and a sieve mesh is provided in the sieve holder.
5 . The powder inhalation device according to claim 1 , further comprising a lower shell, the top of which is open; wherein the carrier plate is hinged with the lower shell and is snap-fitted to the top of the lower shell; and the capsule chamber is housed inside the lower shell.
6 . The powder inhalation device according to claim 3 , wherein the lower shell comprises an outer shell and an inner shell; the outer shell is provided with an opening on each side of the capsule chamber, and two sides of the opening are symmetrically provided with notch structures; the inner shell has upwardly extending side panels on both sides, the side panels are at least partially engaged with the notch structures to secure the inner shell within the outer shell, while part of the side panel is of a transparent structure and a viewing window is formed at the corresponding opening; and/or steps are provided on two sides of the top of the lower shell, and each of the steps is provided with a second snap-fit groove at a hinge point away from the lower shell; flanges are provided on both sides of the carrier plate, and each of the flanges is provided with a second snap-fit at a hinge point away from the carrier plate; and the flange is provided on the step and is snap-fitted and fixed to the second snap-fit groove by the second snap-fit, so that the carrier plate is detachably connected to the lower shell.
7 . The powder inhalation device according to claim 6 , wherein the notch structure is provided with a limit block, and the limit block is configured to limit the position of the inner shell; and an auxiliary column is provided at an inner bottom of the inner shell, and the auxiliary column is configured to correct and position the capsule chamber.
8 . The powder inhalation device according to claim 5 , wherein an air intake gap is formed between the carrier plate and the lower shell, and the air intake gap is in communication with the bottom of the capsule chamber, so that the first airflow enters the capsule chamber through the air intake gap.
9 . The powder inhalation device according to claim 5 , further comprising an operating mechanism with a lancet; wherein the operating mechanism is movably arranged on a sidewall of the lower shell, and the operating mechanism is configured as a dual function actuator; in a first actuation, the operating mechanism is capable of driving the upper shell to open; and in a second actuation, the operating mechanism is capable of driving the lancet to pierce a target capsule in the capsule chamber.
10 . The powder inhalation device according to claim 9 , wherein the operating mechanism has guide plates parallel to the lancet, and a backstop is provided at an end of each of the guide plates close to the capsule chamber; a guiding plate is provided on a side of the capsule chamber facing the operating mechanism, and the guiding plate is formed with a guiding hole; and the guide plate is slidably inserted into the guiding hole, and an anti-release function is realized by the backstop.
11 . The powder inhalation device according to claim 9 , further comprising an upper shell, the bottom of which is open; wherein one side of the upper shell is hinged with the carrier plate, and the other side of the upper shell is provided with a closure; an interference surface is provided on a side of the carrier plate close to the operating mechanism; a boat-shaped recess is provided at the top of the operating mechanism; when the upper shell is in a closed state, the closure is located just inside the boat-shaped recess and is held against the interference surface; and only when an acting force exerted by the boat-shaped recess on the closure is larger than an interference force between the closure and the interference surface, the closure is capable of being disengaged from the interference surface and automatically opening the upper shell.
12 . The powder inhalation device according to claim 11 , wherein the closure comprises a guide portion and an interference portion arranged in sequence from bottom to top; and the guide portion is in sliding fit with the boat-shaped recess to provide an acting force for driving the interference portion away from the interference surface.
13 . The powder inhalation device according to claim 6 , wherein an inner wall of the mouthpiece and an inner wall of the capsule chamber are provided with a first conductive layer; an outer surface of the lower shell is provided with a second conductive layer; and the first conductive layer is electrically connected to the second conductive layer so that static electricity generated by the use of the powder inhalation device is conducted out through a human body.
14 . The powder inhalation device according to claim 9 , wherein an inner wall of the mouthpiece and an inner wall of the capsule chamber are provided with a first conductive layer; the lancet is a conductive lancet; a third conductive layer is provided on a surface of the operating mechanism, or the inside of the operating mechanism is provided with a third conductive layer extending to the outside; and the first conductive layer is electrically connected to the third conductive layer by the lancet so that static electricity generated by the use of the powder inhalation device is conducted out through a human body.
15 . The powder inhalation device according to claim 9 , wherein an inner wall of the mouthpiece and an inner wall of the capsule chamber are provided with a first conductive layer; the lancet is a non-conductive lancet, and the lancet extends to a surface of the operating mechanism and has a metal filler disposed therein; and the first conductive layer contacts a human body through the metal filler so that static electricity generated by the use of the powder inhalation device is conducted out through the human body.
16 . The powder inhalation device according to claim 11 , wherein a pressing rib is provided at an inner top of the upper shell, and a lower end of the pressing rib is held against a top end of the mouthpiece; and when the upper shell is flipped and closed, the unclosed mouthpiece is capable of being flipped in the same direction under the action of the pressing rib until it is completely closed on the carrier plate.
17 . The powder inhalation device according to claim 9 , wherein an end of the lancet close to the capsule chamber is of a multifaceted structure, the multifaceted structure comprising a main oblique piercing surface and lateral piercing surfaces on two sides of the main oblique piercing surface.
18 . The powder inhalation device according to claim 4 , wherein a fixing portion is provided at the bottom of the sieve holder; and the sieve mesh is provided at the fixing portion, and the sieve mesh and the fixing portion are fixedly connected by means of hot melting.
19 . The powder inhalation device according to claim 9 , wherein a spring is arranged between the capsule chamber and the operating mechanism; a rib ( 302 ) is provided on a side of the capsule chamber facing the operating mechanism; a cross-shaped protrusion is provided on a side of the operating mechanism facing the capsule chamber, and four sides of the cross-shaped protrusion extend outward and form a reinforcing rib structure in the operating mechanism; and two ends of the spring are fitted over the rib and the cross-shaped protrusion, respectively.
20 . A medicament box, comprising a powder inhalation device according to claim 1 .

Description

CROSS REFERENCE TO RELATED APPLICATIONS The present application is a continuation of the international application PCT/CN2023/133189, filed on Nov. 22, 2023 and entitled “powder inhalation device and a medicament box”, and the international application claims the right of priority of the Chinese Patent Application No. 202321775073.9 filed on Jul. 7, 2023 and entitled “powder inhalation device with closing mechanism and medicament box”, Chinese Patent Application No. 202310828770.4 filed on Jul. 7, 2023 and entitled “powder inhalation device with anti-misoperation mechanism and medicament box”, Chinese Patent Application No. 202321848737.X filed on Jul. 14, 2023 and entitled “powder inhalation device with auxiliary air inlets and medicament box”, and Chinese Patent Application No. 202321928949.9 filed on Jul. 21, 2023 and entitled “powder drug inhaler with a detachable base”, which are incorporated herein by reference in their entirety. TECHNICAL FIELD The present invention relates to the technical field of powder inhalers, and in particular to a powder inhalation device and a medicament box. BACKGROUND At present, pulmonary inhalation administration is the best treatment for pulmonary diseases such as asthma and chronic obstructive pneumonia. In recent years, it has been extended to the treatment of systemic diseases such as diabetes, and has enormous market potential. Pulmonary administration requires the use of a specific delivery device to complete the dispersion, nebulization and pulmonary delivery of drug, and an inhaler plays a key role in a pulmonary administration system. The existing powder inhalers can be roughly divided into three categories: Class I: Provided is a depot-type powder inhaler having a reservoir in which a dose of powder can be stored, where the powder inhaler also has a dosing component that can separate a dose of powder from the reservoir each time it is actuated, and the separated powder is then inhaled into the patient's body through a drain line. Disadvantages of such powder inhalant: firstly, the amount of powder per delivery is inconsistent; secondly, this type of powder inhaler is poorly sealed, so the powder is susceptible to moisture in a humid environment, affecting an expected effect; finally, during the process of powder separation in the reservoir, part of the powder will remain inside the powder inhaler, which will contaminate the powder inhaler and cause certain harm to a user. Class II: Provided is a multi-dose powder inhaler in which powder is stored separately in advance in blisters on a blister strip, where the blisters are evenly distributed on the blister strip, and the blister strip is mounted on a rotating disk inside the powder inhaler; Each actuation of the powder inhaler opens one blister, and the powder is inhaled into the patient's body through a discharge tube. Such powder inhaler better guarantees the sealing of the powder; and its disadvantages are: firstly, it has poor reproducibility, and there variation in the dose delivered to the patient between successive uses of the same powder inhaler; secondly, there will be powder residues in the powder inhaler, which will contaminate the powder inhaler and cause certain harm to a user; finally, there will be powder residues in the blister, causing the performance of the powder to not achieve an expected effect. Class III: Provided is a single-dose powder inhaler in which powder is stored independently in a single capsule in advance, where capsules are distributed on a capsule plate, and when in use, a patient first takes out a capsule from the capsule plate, then puts the removed capsule into a capsule chamber of the powder inhaler, and presses a button to enable the capsule to be punctured, so that the powder is inhaled into the patient's body through a discharge tube. SUMMARY The present invention provides a powder inhalation device, including: a carrier plate, a through hole being formed in the carrier plate, and an annular groove being provided at an outer periphery of the through hole;a mouthpiece, the mouthpiece being disposed above the carrier plate and communicating with the through hole; anda capsule chamber, the capsule chamber being disposed under the carrier plate and communicating with the through hole, the capsule chamber also communicating with an outside atmosphere for inhalation of a first airflow;where the powder inhalation device further includes:at least one air intake slot, the air intake slot being provided at the outer periphery of the through hole, and the air intake slot including a horizontal slot section and an oblique slot section;where the horizontal slot section is located on an upper surface of the carrier plate, the oblique slot section is located on a sidewall of the annular groove, and the horizontal slot section is connected to the oblique slot section, so that a second airflow drawn from the air intake slot creates a turbulent flow at the annular groove. In some embodimen