Inhaled dry powder inhalation dosing device

Abstract

The utility model discloses an inhaled dry powder inhalation dosing device. According to the invention, a first medicine carrying cavity and / or a second medicine carrying cavity for carrying a medicine bag are / is formed in a medicine carrying device; an air inlet is formed in the bottom of the first medicine carrying cavity and / or the second medicine carrying cavity, the medicine carrying device comprises at least one first hole located in the left side face and / or at least one second hole located in the right side face, and a first boss is arranged on the left side face and / or a second boss is arranged on the right side face; one end of a needle is connected with a button, and the other end of the needle is slidably connected to the first hole and / or the second hole to puncture the medicine bag when overcoming the elastic force of an elastic element; a spiral device comprises a cylinder body and a blade structure arranged in the cylinder body and used for generating vortexes, the blade structure is twisted by a preset angle in the vertical direction to form a spiral flow channel, and air from the air inlet carries the medicine powder from the medicine bag to sequentially pass through a grid flow channel, the spiral flow channel and a flat flow channel to enter the mouth.

Description

technical field [0001] The invention relates to the field of oral inhalation preparations, in particular to an inhalation powder mist drug delivery device. Background technique [0002] Oral inhalation preparations refer to preparations that deliver drugs to the respiratory tract and / or lungs through inhalation to exert local or systemic effects, and are mainly used for the treatment of respiratory diseases and other diseases. Clinically commonly used oral inhalation preparations include inhalation aerosol and inhalation powder aerosol. Compared with aerosol, inhalation powder does not use a propellant to dissolve the drug powder, and the drug powder is directly stored in the sachet, blister or reservoir. When in use, the drug powder enters the body through the patient's own inhalation, thus eliminating the problem of coordination between breathing and external power. [0003] Inhalation of powder mist needs to be performed through a drug delivery device (inhalation device...

AI Technical Summary

Problems solved by technology

The main difference lies in the loading unit of the drug powder, but the inhalation channel is often very simple, so that the drug powder flows unevenly during the inhalation process, the middle flow rate is too large, it is easy to hit the patient's mouth, and the inhalation efficiency of the active ingredient is relatively low. Usually less than 30%

At the same time, under normal circumstances, the drug delivery device has only one drug-loading cavity, which can only be used to administer a single drug component, or a mixture of drug components

For pharmaceutical ingredient mixtures, the high temperature and high heat generated when mixing with a mixer may cause the active ingredients to interact and cause them to decompose, resulting in poor efficacy or even danger to patients

Images