A method for controlling the accuracy of the drug supply of a powder mist drug delivery device

Abstract

The invention relates to a method for controlling accuracy of a medicine supply quantity of a powder aerosol supply device, and belongs to the field of a medicine supply machine. On one hand, a vibration gear is arranged below a medicine powder outlet of a medicine powder storage container to perform integral striking-type vibration to a runner lower component by virtue of a rotating plate, so that the measuring accuracy of a medicine powder dosage supplied by a medicine storage unit in the medicine supply process at every time of the entire powder aerosol supply device can be better guaranteed; on the other hand, a counter-rotation prevention structure is used for preventing the failure in medicine supply, when in operation, the powder aerosol supply device can correctly supply the medicine after rotating for a given angle, so that the situation of failure in medicine supply can be prevented, the rotating angle of a rotating wheel is enabled to be correct at every time when in use, more convenience in operation can be realized, the situation of failure in medicine supply can be prevented, and accuracy in measuring the medicine supply dosage of the powder aerosol supply device at every time can be guaranteed. The method can be widely suitable for the design and manufacture field of the powder aerosol supply device of various specifications.

Description

Technical field [0001] The invention belongs to the field of devices for injecting media into the human body, and in particular relates to an inhalation type drug delivery device used to deliver a specified dose of powder mist along the respiratory airflow through the oral cavity into the lungs of a patient. Background technique [0002] In modern medical technology, the use of oral or nasal inhalation can make the drug directly enter the lungs and be absorbed into the blood, avoiding the "first pass" effect of the liver. [0003] Clinically, pulmonary administration is mainly used to treat lung diseases such as asthma, chronic obstructive pneumonia, and cystic fibrosis. Due to the characteristics of thin alveolar epithelial cell wall, large surface area, and low enzyme metabolic activity, in recent years, pulmonary drug delivery has gradually become a new way of non-invasive drug delivery for more drugs (such as peptides and protein drugs, etc.). [0004] In the way of pulmonary ad...

AI Technical Summary

Problems solved by technology

[0014] In the inverted cone-shaped drug powder storage container in the above technical solution, once its design parameters (inverted cone angle) are determined, it can only be adapted to a drug powder with a certain fluidity range. For drug powders with worse fluidity index parameters, it cannot well adapted

When the physical performance index of the filled drug powder (usually refers to the fluidity index of the drug powder) changes, only by redesigning the mechanical design parameters of the inverted cone-shaped drug powder storage container and the vibrating drug delivery unit can the drug delivery rate of each drug delivery be ensured. The metering accuracy of the powder dose supplied in the process (commonly known as the dosage of a single dose), so the powder mist drug delivery device designed and produced can only be aimed at a specific drug powder, and does not have a good type of drug. Adaptability and convenience of mechanical structure parameter design adjustment

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