SPRAYER, IN PARTICULAR AN INHALER, FOR SPRAYING A LIQUID ACTIVE SUBSTANCE INTO AN AEROSOL, AS WELL AS A CORRESPONDING METHOD Russian patent published in 2021 - IPC A61M11/00 A61M15/00 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to an inhaler for spraying a liquid active substance into an aerosol and an inhaler operating method. Inhaler contains reservoir (1) for an active substance, spray nozzle (2) and pump device (3). Suction side (4) of pump device (3) is connected with reservoir (1) for active substance, and pressure side (5) of pump device (3) communicates with spray nozzle (2). Pump device (3) comprises piston (7) movable in cylinder (6) in axial direction (x) of cylinder (6). Along its outer periphery (8) piston (7) adjoins internal wall (9) of cylinder (6) in places with geometrical closure, and in some places between inner wall (9) of cylinder (6) and piston (7) gap (10) is formed. Piston (7) is located in cylinder (6) with possibility of rotation about its longitudinal axis (x) and with possibility of movement between suction position, in which working chamber (11) of pump device (3) through gap (10) is connected to suction side (4), and delivery position, in which piston (7) closes suction side (4). Method of inhaler operation includes movement of piston (7) relative to cylinder (6) in longitudinal direction (x) of piston (7) and cylinder (6) between extended position into retracted position.

EFFECT: technical result is improvement of sprayer and corresponding method so that they are simple and do not require high manufacturing costs.

18 cl, 6 dwg