HIGH PRESSURE INHALATION DEVICE Russian patent published in 2023 - IPC A61M15/00 A61M11/00 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to an inhalation device for generating an aerosol from a liquid and a method of generating an aerosol from a liquid. The inhalation device comprises a housing (1), inside the said housing (1) there is a reservoir (2) for storing the said medical fluid, further than the said reservoir (2) along the flow of the fluid, there is an injection unit (3) for creating pressure connected to the agent (4) for supplying mechanical energy to the said injection unit (3), and there is nozzle (5) further to the said injection unit (3) along the flow of the fluid. The discharge block (3) contains a hollow cylindrical part (3A) and a plunger (3B), wherein the cylindrical part (3A) has an internal space (3C) with a given first cross section (A1) configured to accommodate an upstream end section (3B') of the said plunger (3B). The cylindrical part (3A) and the plunger (3B) are movable relative to each other linearly so as to form an injection chamber with a variable volume. An agent (4) for supplying mechanical energy is a pressurized gas. The inhalation device contains a pressurized chamber (6) having an internal volume for storing the said pressurized gas. The wall of the injection pressure chamber (6) is formed by a piston (7) configured to perform reciprocating linear movement so as to change the internal volume of the injection pressure chamber (6). The piston (7) is mechanically coupled with the plunger (3B) or with the cylindrical part (3A) of the pressure block (3), and the piston (7) has a cross section (A2) that is larger than the cross section (A1) of the pressure chamber. The method includes a step in the filling phase, providing a negative gauge pressure inside the injection chamber by increasing its volume and thus filling the injection chamber with liquid from the reservoir (2) due to the said negative gauge pressure. The method includes the step in the ejection phase, providing a positive gauge pressure inside the pressurization chamber (6) having the specified second cross section (A2) and, thus, the movement of the piston (7). The method includes the step of mechanically transmitting the said movement to the plunger (3B) in such a way that the volume of the injection chamber is reduced and a positive pressure is created in its interior; and thus ejecting the medical fluid is performed from the injection chamber through the nozzle (5) while increasing the pressure in the injection pressure chamber (6).

EFFECT: ejection of large volumes of liquid for medical purposes in a fairly short time in just one dosing cycle.

20 cl, 4 dwg