AIR FLOW IN THE NEBULISER NOZZLE Russian patent published in 2020 - IPC A61M11/00 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to nebuliser head (10), nebuliser system (100) and method (200) for dispensing an aerosol-based substance using a nebuliser. Nozzle comprises housing structure (12) that provides air flow path (16) with two opposed airflow holes (18a, 18b). Nozzle comprises reservoir (14) for fluid medium intended for accommodation of liquid in it, from which drops are produced for aerosol formation. Nozzle has aerosol generator (20) with hole element (22), which comprises surface (24) with holes for liquid drops delivery. Fluid reservoir is arranged nearby aerosol generator so that element with orifices is in contact with fluid. Aerosol generator is arranged inside air flow path. Between the aerosol generator and the housing structure there is at least one bypass flow path (26). Airflow pathway is a bidirectional path that provides a first air flow direction (28) for inhalation and a second air flow direction (38) for exhalation. Air enters the air flow path and leaves the air flow path through the air flow openings and the surface with holes is located across the first and second air flow directions. System (100) comprises nozzle (102) for a nebuliser and structure (104) of a base, comprising a power supply, as well as a control and control element for controlling operation of the aerosol generator. Nozzle for the nebuliser is at least temporarily installed on the base structure. Method (200) for dispensing a substance in the form of an aerosol using a nebuliser involves dispensing (202) a substance in the form of aerosol drops in an air flow caused by inhalation of the patient. Air flow enters the air flow path through the rear airflow hole and extends around the aerosol generator such that the aerosol drops are mixed with the airflow to form an aerosol. Rear airflow opening is directed from inhalation patient, and the aerosol exits the air flow path through the mouthpiece to enter the patient's oral cavity or nasal cavity for further passage into the patient's respiratory tracts and respiratory tracts. Method comprises step b) release (204) of exhaled air, wherein the exhaled air enters the air flow path through the mouthpiece and extends around the aerosol generator such that aerosol droplets are transferred towards the rear airflow opening; and the air mixture exits the air flow path through the rear airflow opening for discharge into ambient air away from the patient exhaling.

EFFECT: technical result is improvement of air flow direction.

14 cl, 6 dwg