Single-dose simple dry powder inhaler

Abstract

The utility model relates to a single-dose simple dry powder inhaler, and belongs to the field of dry powder inhalers. Comprising a body and a medicine powder bubble cap. Wherein the main body comprises a suction nozzle and air inlets which are oppositely arranged, the air inlets are connected with spiral air inlet channels, the air inlet channels are converged at a vortex chamber, an acceleration slope is arranged in the vortex chamber, the vortex chamber is communicated with the suction nozzle through an air outlet channel, and a filter screen is arranged between the vortex chamber and the air outlet channel. By means of the internal structure of the device, medicine powder is evenly dispersed in the using process of a patient, the caking phenomenon is avoided, absorption by the patient is facilitated, and the whole device is light and easy to carry by the patient when the patient goes out.

Description

Technical Field

[0001] The utility model relates to a dry powder inhaler, in particular to a dry powder inhaler which allows medicine powder to be orally delivered into the lungs of a human body for administration and utilizes a single-dose blister to store the medicine powder. Background Art

[0002] Pulmonary inhalation is another more attractive route of administration besides oral and injection administration. Based on the special structure of the lungs, pulmonary inhalation administration has the advantages of rapid onset, good efficacy, and few adverse reactions. Common pulmonary inhalation administration methods include inhalation aerosols, nebulizers, and inhalation powders. Among them, the administration process of inhalation powders is actively inhaled by the patient. While improving patient compliance, no propellant is used, avoiding damage to the environment. Its overall structure is also more compact and portable than the nebulizer that needs to be used in a fixed place. A single course of treatment takes no more than ten minutes, which is more convenient for patients' daily use.

[0003] The powder storage form of inhalation powder aerosols is divided into capsule, blister or multi-dose reservoir type. Capsule-type inhalation powder aerosols store a single dose of powder in a single capsule, and during use, the device needs to be punctured to release the powder in the capsule; multi-dose reservoir-type inhalation powder aerosols store a large dose of powder in the device, and when used, a single dose is divided for the patient to inhale, which places great demands on the sealing performance of the device. The blister-type dry powder inhaler currently available on the market includes a blister belt, on which single-dose powder blisters are evenly distributed and stored. During use, the blister is opened inside the device using a gear structure to release the powder. This type of blister-type dry powder inhaler has a complex internal structure and a large device appearance, and is not portable overall. At the same time, a single device stores a large dose, and a counting component needs to be added to remind the patient of the remaining dose inside the device when the device is used, which further increases the weight and appearance of the device.

[0004] The existing single-dose blister dry powder inhaler adopts a straight-through airflow channel, which is prone to uneven dispersion of drug powder during use by patients, and agglomeration after entering the oral cavity, making it difficult to absorb. Utility Model Content

[0005] The main purpose of the utility model is to provide a single-dose simple dry powder inhaler which is convenient for patients to carry and use and can evenly disperse medicine powder in view of the above problems.

[0006] A single-dose simple dry powder inhaler comprises a main body and a powder blister. Furthermore, the main body of the device is provided with a plurality of openings, one of which is a suction nozzle, and the other openings are air inlets. The air inlets are arranged at the same horizontal position as the distal end of the suction nozzle, and the air inlets are opposite openings. The air inlets are correspondingly connected to an air inlet channel, and the air inlet channel is arranged in a spiral shape.

[0007] Furthermore, the medicine powder blister comprises a medicine chamber plate and an aluminum foil strip, and the aluminum foil strip can be detachably fixed on the medicine chamber plate.

[0008] Furthermore, the air inlet channel converges into a vortex chamber, the center of the vortex chamber is a sinking structure and is connected to the suction nozzle through an air outlet channel.

[0009] Furthermore, a filter is provided between the vortex chamber and the air outlet channel.

[0010] Preferably, a raised acceleration slope is provided around the inlet of the vortex chamber sinking structure.

[0011] Furthermore, the body may be used as a disposable device or may be reusable.

[0012] Furthermore, when the main body is used as a disposable device, the medicine powder blister can be thermoplastically fixed to the main body, and the aluminum foil strip is located between the medicine chamber plate and the main body.

[0013] Furthermore, when the main body is used for repeated use, the end of the main body opposite to the suction nozzle can be flexibly connected to a sheet-type upper cover, and the flexible connection part is divided into two sections, and the length of the middle gap is located between the widest distance of the medicine chamber plate and the distance after the medicine chamber plate is retracted.

[0014] Preferably, a fixing hole is provided at one end of the medicine chamber plate, the fixing hole corresponds to the fixing column on the main body, and the other end is retracted inward by a certain distance to form a step.

[0015] Preferably, a medicine bin hole is provided on the upper cover, and the medicine bin hole is an elliptical through hole, and its position corresponds to the position of the medicine bin after the medicine powder blister is installed.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Independent powder blister, a single blister corresponds to a single dose. When the patient needs to go out, he only needs to carry the corresponding number of powder blisters and the dry powder inhaler body. The device has a simple structure and good economy; the appearance is small and light, which is more convenient for patients to carry when going out.

[0018] 2. The opposite air inlet is combined with the spiral air inlet channel, so that when the patient uses it, the airflow drives the powder to collide inside the device. At the same time, an acceleration slope is provided in the vortex chamber, which can drive the powder to collide with the filter screen, further disperse the powder evenly, prevent the powder from agglomerating, and make it easier for patients to absorb.

[0019] 3. The powder blister is thermoplastically fixed on the device body, that is, one device corresponds to one dose of medication, which can avoid the problem of cleaning the device and is safer and more hygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments of the present invention, in which:

[0021] Figure 1 It is a structural explosion diagram of a reusable single-dose simple dry powder inhaler according to a preferred embodiment of the utility model;

[0022] Figure 2 This is a diagram of a use state of a reusable single-dose simple dry powder inhaler according to a preferred embodiment of the utility model;

[0023] Figure 3 This is a diagram of a use state of a reusable single-dose simple dry powder inhaler according to a preferred embodiment of the utility model;

[0024] Figure 4 is a top view of a reusable single-dose simple dry powder inhaler according to a preferred embodiment of the utility model;

[0025] Figure 5 is a structural schematic diagram of a reusable main body according to a preferred embodiment of the utility model;

[0026] Figure 6 is a schematic diagram of the filter position according to a preferred embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the airflow direction of a single-dose simple dry powder inhaler according to a preferred embodiment of the utility model;

[0028] Figure 8 It is a schematic structural diagram of a powder blister of a disposable single-dose simple dry powder inhaler according to another preferred embodiment of the utility model;

[0029] Fig. 9 is a top view of a disposable single-dose simple dry powder inhaler according to another preferred embodiment of the utility model;

[0030] Fig.10 is a side view of a disposable single-dose simple dry powder inhaler according to another preferred embodiment of the utility model;

[0031] Among them: 1-main body, 2-powder blister, 3-upper cover, 4-aluminum foil strip, 5-medicine chamber plate, 6-buckle mouth, 7-sucking nozzle, 8-medicine chamber, 9-vortex chamber, 10-fixing hole, 11-fixing column, 12-medicine chamber hole, 13-air outlet channel, 14-air inlet, 15-air inlet channel, 16-acceleration slope, 17-filter. DETAILED DESCRIPTION

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0033] Figures 1 to 7 The figure shows a preferred embodiment of the single-dose simple dry powder inhaler of the utility model that can be reused, which includes: a main body 1, a powder blister 2, an upper cover 3 and other structural parts. Among them:

[0034] like Figure 2-4 As shown, the medicine powder blister 2 includes a medicine chamber plate 5 and an aluminum foil strip 4. The medicine chamber plate 5 includes a medicine chamber 8 for storing medicine powder, and the aluminum foil strip 4 covers the medicine chamber 8 and is completely sealed around the medicine chamber 8 and folded to extend the tail. When the patient uses it, the aluminum foil strip 4 can be peeled off from the medicine chamber plate 5 by pulling the tail. The medicine chamber plate 5 is a long sheet structure as a whole, and a small round hole is set on one end of the medicine chamber plate 5 as a fixing hole 10, and the two sides of the other end of the medicine chamber plate 5 are parallel and retracted inward by a certain distance to form a step.

[0035] The main body 1 is provided with a plurality of openings, one of which is a suction nozzle 7. A sunken vortex chamber 9 is provided at the center of the main body 1 far from the suction nozzle 7. A raised cylinder is provided between the vortex chamber 9 and the suction nozzle 7. The raised cylinder is a fixed column 11. The upper cover 3 is flexibly connected to the end of the main body 1 opposite to the suction nozzle 7. The flexible connection part is divided into two sections. The distance between the middle gap and the length of the middle gap is between the widest distance of the medicine chamber plate and the distance after the medicine chamber plate is retracted. The upper cover 3 is provided with a medicine chamber hole 12, which is an elliptical through hole.

[0036] During use by the patient, the narrower section of the medicine chamber plate 5 together with the tail end of the aluminum foil strip 4 is inserted into the middle gap of the flexible connection between the main body 1 and the upper cover 3. The step of the medicine chamber plate 5 will limit the insertion distance of the entire medicine powder blister 2 and prompt the patient that it has been inserted in place. After the patient inserts the medicine powder blister 2 into place, the upper cover 3 needs to be buckled with the main body 1. At this time, the medicine chamber 8 corresponds to the medicine chamber hole 12, and the fixing hole 10 corresponds to the fixing column 11. The four cooperate with each other to fix the medicine powder blister 2 between the main body 1 and the upper cover 3 to prevent the medicine powder blister 2 from shifting and affecting the drug administration process. A buckle 6 is provided on the upper cover 3. When the patient has finished using it, the buckle 6 can be used to reopen the device and take out the medicine powder blister 2, which is convenient for the next use of the device.

[0037] like Figure 5-7As shown, a group of opposite openings are provided in the main body 1, and the opposite openings are air inlets 14, and the air inlet 14 is connected to an air inlet channel 15 with a spiral layout, and the air inlet channel 15 converges to the vortex chamber 9 provided in the main body 1. The center of the vortex chamber 9 is a sinking structure, and a raised acceleration slope 16 is provided around the entrance of the sinking structure. The acceleration slope 16 can limit the cross-sectional area of ​​the air flow, thereby achieving an acceleration effect. The sinking structure of the vortex chamber 9 is connected to the suction nozzle 7 through the air outlet channel 13, and a filter 17 is provided between the vortex chamber 9 and the air outlet channel 13.

[0038] During the use of the device by the patient, after the device is installed, the aluminum foil strip 4 is peeled off from the medicine bin plate 5, and the medicine powder in the medicine bin 8 will fall into the vortex bin 9. At this time, the patient inhales through the suction nozzle 7, and the external airflow enters the device through the air inlet 14. Since the air inlet channel 15 is spirally arranged and is provided with an acceleration slope 16, the airflow entering from the opposite direction will accelerate into the vortex bin 9 and vortex, and the vortex drives the medicine powder in the vortex bin 9 to collide with the inner wall of the device, and the medicine powder is initially dispersed. The medicine powder will be further dispersed through the filter 17, and finally the evenly dispersed medicine powder will enter the patient's oral cavity through the air outlet channel 13 and the suction nozzle 7.

[0039] Figures 8 to 10 The single-dose simple dry powder inhaler of the utility model is shown as another preferred embodiment of a disposable device, wherein: the medicine chamber plate 5 is in the shape of a wide plate, the powder blister 2 is fixed on the main body 1 by thermoplasticization, and the aluminum foil strip 4 is located between the medicine chamber plate 5 and the main body 1. The entire device is a disposable item, and the entire device can be discarded after the patient has finished using it. This design is cleaner and more hygienic, and can avoid the possibility of the mouthpiece being contaminated due to the placement or carrying of the device between multiple medication treatments to the greatest extent.

[0040] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the position or location relationship are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A single-dose simple dry powder inhaler, comprising a main body and a powder blister, characterized in that: The main body of the device is provided with a plurality of openings, one of which is a suction nozzle, and the other openings are air inlets, the air inlets are arranged at the same horizontal position as the distal end of the suction nozzle, and the air inlets are opposite openings, the air inlets are correspondingly connected to the air inlet channels, and the air inlet channels are arranged in a spiral shape; The medicine powder blister comprises a medicine chamber plate and an aluminum foil strip, and the aluminum foil strip can be detachably fixed on the medicine chamber plate.

2. The single-dose simplified dry powder inhaler according to claim 1, characterized in that: The air inlet channel converges into the vortex chamber, the center of the vortex chamber is a sinking structure and is communicated with the suction nozzle through an air outlet channel.

3. The single-dose simplified dry powder inhaler according to claim 2, characterized in that: A filter is provided between the vortex chamber and the air outlet channel.

4. The single-dose simplified dry powder inhaler according to claim 3, characterized in that: A raised acceleration slope is arranged around the inlet of the vortex chamber sinking structure.

5. The single-dose simplified dry powder inhaler according to claim 1, characterized in that: The body may be used as a disposable device or may be reusable.

6. The single-dose simplified dry powder inhaler according to claim 1, characterized in that: When the main body is used as a disposable device, the medicine powder blister can be thermoplastically fixed on the main body, and the aluminum foil strip is located between the medicine chamber plate and the main body.

7. The single-dose simplified dry powder inhaler according to claim 1, characterized in that: When the main body is used for repeated use, the end of the main body opposite to the suction nozzle can be flexibly connected to a sheet-type upper cover, and the flexible connection part is divided into two sections, and the length of the middle gap is located between the widest distance of the medicine chamber plate and the distance after the medicine chamber plate is retracted.

8. The single-dose simplified dry powder inhaler according to claim 7, characterized in that: One end of the medicine chamber plate is provided with a fixing hole corresponding to the fixing column on the main body, and the other end is retracted inward by a certain distance to form a step.

9. The single-dose simplified dry powder inhaler according to claim 8, characterized in that: The upper cover is provided with a medicine bin hole, which is an elliptical through hole, and its position corresponds to the position of the medicine bin after the medicine powder blister is installed.

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