AEROSOL DELIVERY SYSTEM Russian patent published in 2022 - IPC A61M11/00 A61M15/00 

FIELD: medical equipment.

SUBSTANCE: inventions relates to medical equipment, namely to two variants of an aerosol delivery system and a method for converting a fluid medium into an aerosol. In the first embodiment, the system includes an aerosol generator containing a housing forming a chamber and having an inlet and outlet. The housing outlet contains a conical inner surface. The housing has a ventilation opening connected in fluid medium with said chamber and designed to release gas and/or liquid and/or foam from the housing. The aerosol generator contains a support plate functionally connected to the housing and forming an opening. The aerosol generator has a vibration element operably connected to the base plate so that it is located across the hole. The aerosol generator includes a piezoelectric actuator associated with the base plate, which, when it expands and contracts, causes the vibration element to vibrate to convert the fluid into an aerosol. The aerosol generator includes a first seal that isolates the piezoelectric actuator from the fluid entering the housing. The aerosol generator has a fluid medium supply tube having a distal end located at a distance from the vibratory element, allowing fluid medium to be delivered to the vibrating element. The distance between the distal end of the fluid supply tube and the vibrating element is from 1.0 to 0.001 mm to facilitate the attraction of the supplied fluid to the vibrating element using surface tension forces, regardless of the orientation of the housing, until the fluid is aerosolized by vibrating the vibrating element. In the second embodiment, the system includes from 2 to 11 tubes that deliver fluid to the vibratory element. One of these tubes is different in size from the rest of the tubes. The method includes a step at which a volume of fluid is supplied from the dosing tip of the fluid supply tube to the surface of the vibrating element located in the chamber of the aerosol generator housing. The method includes the step of releasing gas and/or liquid and/or foam from the housing through a ventilation opening formed by the housing and in fluid communication with said chamber. The method includes actuating a piezoelectric actuator to vibrate the vibration element to convert the fluid into an aerosol. The method includes interrupting between doses the fluid flow to the vibrating element vibrating under the action of a piezoelectric actuator to convert the fluid on the vibrating element into an aerosol.

EFFECT: increasing the effectiveness of the treatment of respiratory disease with a nebulizer.

18 cl, 13 dwg