ADVANCED INHALATION DEVICE Russian patent published in 2023 - IPC A61M15/00 A61M11/00 B05B11/00 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to an inhalation device for medical liquids for the formation of an aerosol and a method for the formation of an aerosol by means of an inhalation device. The inhalation device comprises a housing (1), inside the said housing (1) a reservoir (2) for storing liquid, a pressure unit. The injection unit contains an outlet pipe (5), a hollow cylindrical part (3) with an internal space configured to accommodate an end part (5A) of the said outlet pipe (5) located upstream of the fluid. The cylindrical part (3) is made with the possibility of linear movement along the outlet pipe (5). The cylindrical part (3) and the outlet pipe (5) form an injection chamber having, due to the linear movement of the cylindrical part (3) relative to the outlet pipe (5), a variable volume for pressurizing the said injection chamber. The injection chamber is in fluid communication with the reservoir (2) and with a nozzle (6) which has a liquid-tight connection with the downstream end part (5B) of the outlet pipe (5). The possibility of the said relative linear movement is provided by means of relative rotation of the rotatable part (1A), which is a part of the first part of the body (1), around the axis (R) of rotation relative to the counterpart (1B), which is a part of the second part of the said body (1) so that the said relative rotation is converted into the said relative linear movement by the drive mechanism. The drive mechanism comprises a cam surface containing a first section (9A) located in the axial direction, having an increasing height, as well as a second section (9B), having a decreasing height. The cam surface is made with the possibility of sliding along the adjacent mating surface. The cam surface is configured to slide on the said mating surface during rotation, resulting in the said transformation. Means (7) are provided for storing potential energy, configured to store energy through the said relative rotation along the first section (9A). It is possible to communicate the specified energy to the specified pumping device when it is released. The cam surface comprises between the first section (9A) having an increasing height and the second section (9B) having a decreasing height, a third section (9C) having a constant height, so that while the said third section (9C) of the said cam surface slides on the mating surface, no linear movement of the cylindrical part (3) relative to the outlet pipe (5) occurs. The dosing cycle, which covers the angle of rotation of the first, second and third sections (9A, 9B, 9C), corresponds to a rotation of 180 degrees. The method for generating an aerosol by means of an inhalation device includes, during rotation of the rotatable part (1A), the first phase — the filling phase, for filling the injection chamber with liquid, and the second phase — the release phase, for ejecting the sprayed liquid from the nozzle (6). Between these two phases there is a third phase, the rest phase, during which, despite further rotation, the volume of the injection chamber remains constant and one dosing cycle is provided by means of a 180 degree rotation.

EFFECT: production of a device that makes it possible to prevent any premature and undesirable release of liquid from the nozzle, avoids a reduction in dosing cycles per tank, and also provides a cost-effective and mechanically reliable technical solution.

14 cl, 16 dwg