Dry powder inhaler

Abstract

The invention discloses a dry powder inhaler, which comprises a bearing plate, a suction nozzle, a capsule chamber, a button, a spring and a lower shell, wherein through holes are formed in the bearing plate in a going-through mode; the suction nozzle is connected to the upper side of the bearing plate and is arranged on the through holes; the capsule chamber is connected to the lower side of the bearing plate and is located on the through holes; tip pins, which are made from metal, are connected to the button, and the tip pins, through a pressing action of the button, can extend into the capsule chamber; the spring is clamped between the button and the capsule chamber, and by virtue of the spring, elasticity away from the direction of the capsule chamber is exerted; the upper side of the lower shell is of an opening structure; the bearing plate is connected to an opening of the upper side of the lower shell, and meanwhile, the capsule chamber is accommodated within the lower shell; the tip pins are fixedly connected to the button by virtue of a plastic tip pin seat; the tip pins and the tip pin seat are fixed in an injection-molding mode; and the tip pin seat and the button are fixed in a clamping mode. According to the dry powder inhaler, the tip pins, when used, are prevented from getting fallen or displaced easily; and moreover, the capsule chamber can be cleaned by a user more conveniently.

Description

technical field [0001] The present application relates to a dry powder inhaler, which is used for delivering powdered medicaments, especially powdered medicaments for treating respiratory diseases (such as asthma and chronic obstructive pulmonary disease). Background technique [0002] In the known field of powder medicine inhalers, there are various kinds of powder medicine inhalers. Existing powder drug inhalers can be divided into three main categories: [0003] Type 1: Reservoir-type powder pharmaceutical inhalers, which have a reservoir in which a certain dose of powder can be stored, and a metering part that can be separated from the reservoir at each actuation A certain dose of powder is dispensed, and then the separated powder is inhaled into the patient's body through the exhaust tube. Disadvantages of this type of powder inhaler: 1. The amount of powder delivered each time is unstable; 2. The sealing performance of this type of powder drug inhaler is poor, so the...

AI Technical Summary

Problems solved by technology

Disadvantages of this type of powder inhaler: 1. The amount of powder delivered each time is unstable; 2. The sealing performance of this type of powder drug inhaler is poor, so the powder is easily affected by moisture in a relatively humid environment, which affects the expected effect; 3. The powder During the separation process in the storage, some powder will remain inside the powder drug inhaler, which will pollute the powder drug inhaler and cause certain harm to the user

This type of powder drug inhaler better guarantees the sealing of the powder; its disadvantages: 1. Poor repeatability, and there are differences in the delivery of the same powder drug inhaler to the patient before and after; 2. The inside of the powder drug inhaler will Residual drug powder will pollute the powder inhaler and cause certain harm to the user; 3. There will be powder residue in the blister, which will cause the performance of the powder to fail to achieve the expected effect;

The shortcoming of existing this type of product: one, the reliability of existing powder medicine inhaler is poor; Normal use; 2. The powder drug inhaler cannot be fully cleaned, which is easy to cause pollution; 3. The use is not humane enough, and the use is not convenient enough; the assembly process is complicated, the defective rate is high, and the manufacturing cost is high

Assembly is troublesome, from an economical point of view, this spindle is completely unnecessary

[0008] 2. A pair of transparent windows are used. The actual size of the window is restricted by the strength of the components and cannot be made very large. It is not suitable for patients to observe the internal situation. It is likely to cause patients to misjudge the internal situation and cause later stage When taking medicine, inhaling extra medicine or even dirty

Moreover, the main airflow of the capsule chamber is also connected to the lower shell cavity first, and then to the atmosphere, which leads to whether the airflow in the lower shell cavity is clean or not, which will affect the cleanliness of the two airflows

[0010] 4. In the current prior art, the capsule chamber is provided with two pointed points which can be oppositely moved with the spring to push the button. This button is extremely inconvenient to install on the capsule chamber. The capsule room is extremely inconvenient, and has not obtained good quality control conditions, and it may fall

[0011] 5. A hole smaller than 1mm is set on the bottom plate. The edge of this hole is very close to the capsule chamber, resulting in a weak structure of the part. Not only the product is easily damaged, but the mold is also easily damaged.

[0012] 6. There is a slit formed by a reduced width on the base plate close to the main shaft, resulting in a relatively weak base plate on this side of the main shaft

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