TH35595B - Inhalation devices for administering medication into the lungs. - Google Patents

Abstract

The DC60 inhalation device for drug delivery into the lungs consists of a chamber for containing a powdered pharmaceutical component, which has been ground into very small particles by air impact for dispersion; an air inlet pathway for bringing outside air into the chamber for air impact application of the pharmaceutical component and for spraying outside air onto the pharmaceutical component; an inhalation pathway for the powdered pharmaceutical component; a frame for arranging the chamber, air inlet pathway, and inhalation pathway; and a mouthpiece provided at one end of the frame. This mouthpiece has a lateral flow pathway connecting to the inhalation pathway and an auxiliary flow pathway. The inhalation device is constructed in such a way that air impact is applied to the pharmaceutical component with outside air flowing into the chamber during pressure-induced inhalation by the user (patient). The powdered pharmaceutical component is then introduced into the lateral mouthflow pathway. At the same time, outside air is directly drawn into the auxiliary flow pathway by pressure-induced inhalation. The inhalation device for drug delivery into the lungs consists of a chamber for containing the pharmaceutical mixture, which has been powdered into very small particles by air impact for diffusion; an air inlet pathway for bringing outside air into the chamber for air impact application of the pharmaceutical component; and a pathway for spraying outside air onto the pharmaceutical component. The inhalation pathway for the powdered pharmaceutical mixture, the structure for arranging the chamber, the air inlet pathway, and the inhalation pathway, and a mouthpiece are provided at one end of the structure. The mouthpiece is equipped with a lateral flow pathway to the mouthpiece, which connects to the inhalation pathway and the auxiliary flow pathway, where the inhalation device for drug delivery into the lungs is constructed in such a way that air impact is applied to the pharmaceutical component with outside air flowing into the chamber by pressure-induced inhalation that occurs when the user (patient) inhales the air, and the powdered pharmaceutical mixture... The powder is introduced through the lateral flow path of the mouth, and at the same time, outside air is directly introduced through the auxiliary flow path by pressure-induced inhalation.

Claims (13)

1. An inhalation device for delivering medication into the lungs, consisting of a frame; a mouthpiece at one end of the frame; a chamber constructed within the frame for containing a pharmaceutical component, which has been atomized into fine particles by air impaction for diffusion; an air inlet pathway for bringing outside air into the chamber and for spraying outside air onto the pharmaceutical component for air impaction action; an inhalation pathway with an intake port located within the chamber for inhaling the powdered pharmaceutical component; and an auxiliary pathway for direct inhalation of outside air that does not flow through the chamber. The auxiliary pathway is opened around the inhalation pathway in the direction of the airflow of the inhalation pathway in such a way that the auxiliary air flowing out of the auxiliary pathway does not interfere with the airflow of the inhalation pathway. 2. Inhalation device for drug delivery into the lungs, as per claim 1, whereby the mouthpiece is provided with an oral flow path connected to the inhalation flow path; an auxiliary flow path for direct external air intake is not connected to the inhalation and oral flow paths; and the inhalation device for drug delivery into the lungs is constructed in such a way that the air-induced impact is delivered to the pharmaceutical component by external air flowing into the chamber by the pressure induced by inhalation created when the user inhales; and the powdered pharmaceutical component is induced into the oral flow path, and at the same time external air is induced directly into the auxiliary flow path by the pressure induced by inhalation. 3. Inhalation device for drug delivery into the lungs, as per claim 1, whereby the mouthpiece is provided with an oral flow path connected to the inhalation flow path, and a barrier with a small opening is present in at least one of the oral or inhalation flow paths to reduce the size of the flow path by forming a stepped section, and the inhalation device for drug delivery into the lungs is shaped in such a way that the air-induced impact is delivered to the pharmaceutical component by external air flowing into the chamber by the pressure induced by inhalation created when the user (patient) inhales, and the powdered pharmaceutical component is directed to the inhalation flow path and the oral flow path and through the opening as well. 4. An inhalation device for the delivery of medication into the lungs, as per claim 3, whereby a number of barriers, each with a small vent arranged at appropriate intervals, are provided. 5. An inhalation device for the delivery of medication into the lungs, as per claim 1, whereby the mouthpiece is provided with an oral flow path connected to the inhalation flow path, and an auxiliary flow path for external air inhalation is not used for impacting the pharmaceutical component and does not flow through the chamber, and furthermore, external air inhaled is allowed to flow into the oral flow path through an air channel opened into the oral flow path by an air outlet in the direction of the air discharge of the oral flow path, and the pharmaceutical component is powdered by impact with the air created by the external air flowing into the chamber by the pressure induced by the inhalation created when the user inhales, and the powdered pharmaceutical component flows into the oral flow path which is surrounded by the external air flowing into the oral flow path from the annular air channel. 6. An inhalation device for drug delivery into the lungs, as per claim 5, which includes an additional partitioned chamber with micro-channels to reduce the size of the flow path formed in the oral flow path, through which external air containing the powdered pharmaceutical components flows, and is subsequently surrounded by external air flowing into the oral flow path from an annular vent. 7. An inhalation device for the delivery of medication into the lungs, as per claim 6, where the length of the pleural pathway is longitudinal in the direction of the air discharge of the oral pathway. 8. An inhalation device for the delivery of a drug into the lungs, according to any of the preceding claims, which also includes an unsealed component for releasing the sealing condition of the container provided by the sealing component, where the container is held in such a chamber, contains a non-powdered, granular pharmaceutical component which is dispersed in the air by an impact created by the air, and is sealed by the sealing component, where the container is not sealed by the unsealed component to create a connection between the chamber and the interior of the container, and the impact created by the air is delivered by pressure induced by inhalation to the pharmaceutical component contained in the container. 9. An inhalation device for the delivery of medication into the lungs, as per one of the preceding claims, which also incorporates a check valve to prevent the powdered pharmaceutical component from flowing from the inlet pathway to the outside. 10. Inhalation device for delivery of medication into the lungs, as per claim 1, which includes a barrier for restricting the inhalation flow path. The barrier has a small opening for reducing the size of the inhalation flow path and is positioned at the end of the air inlet port. The structure consists of a main body formed in a cylindrical shape and a removable air inlet container. The chamber is formed by a container for holding the pharmaceutical component, which has been ground into fine particles by impact created by the air for dispersion. The inhalation flow path is formed from the empty space inside the main body, mouthpiece, and container. The inhalation flow path is for the flow of external air containing the fine particles of the pharmaceutical component from the side of the container to the side of the mouthpiece. 11. An inhalation device for the delivery of drugs into the lungs, as per claim 10, whereby the air inlet port is formed between the main body and the vessel by a notch arranged at the end of the main body, and an auxiliary flow path is formed between the mouthpiece and the barrier by a notch formed on the outer surface of the circumference of the barrier. 12. An inhalation device for the delivery of a drug into the lungs, pursuant to claim 10 or 11, whereby the inhalation flow path has a certain capacity such that the impact created by the air can be delivered to the pharmaceutical component by external air fed from the inlet port into the inhalation flow path positioned at the flow site of the barrier by user inhalation. 13. An inhalation device for the delivery of medication into the lungs, in accordance with any one of claims 10 through 12, whereby an auxiliary flow path is provided with an air outlet that opens into the inhalation flow path of the mouthpiece, and the air outlet is positioned in such a way that external air flowing in from the air outlet is inhaled into the user's mouth without flowing through the small opening.