Inhalation device and method

US11612704B2 · kind B2 · utility

Assignee

• SOFTWARE GMBH · DE

Inventors

• Frank Bartels · Hattingen, DE
• Jürgen Rawert · Cologne, DE

Key dates

• Filing date: Apr 30, 2018
• Grant date: Mar 28, 2023
• Expiry date: Oct 5, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B11/1004
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to the field of inhalation devices for liquids. In particular, the invention relates to an inhalation device having improved flow characteristics. A inhalation device for medically active liquids (F) for generation of an aerosol comprises a housing (1), inside this housing (1) a reservoir (2) for storing a liquid (F), a pumping device with a hollow cylinder (9) providing a pumping chamber (3) for the generation of a pressure inside said pumping chamber (3), wherein the pumping chamber is fluidically connected with the reservoir (2) via an inlet check valve (4) which blocks in direction of the reservoir (2), a riser pipe (5) which can be received with at least one reservoir-facing, interior end (5A) in said hollow cylinder (9), and a nozzle (6) which is connected liquid-tight to an exterior end (5B) of the riser pipe (5), wherein the volume of the pumping chamber (3) is changeable by means of relative motion of the cylinder (9) to the riser pipe (5), and is characterised in that the riser pipe (5) is immobile and firmly attached to the housing (1) and to the nozzle (6), whereas the hollow cylinder (9) is moveable relative to the housing (1) and to the nozzle (6…