Cartridge for a liquid

US6988496B1 · kind B1 · utility

Assignee

• Boehringer Ingelheim International GmbH · DE

Inventors

• Joachim Eicher · Karlsruhe, DE
• Johannes Geser · Gerlingen, DE
• Matthias Hausmann · Rees, DE
• Michael Schyra · Wuppertal, DE
• Gilbert Wuttke · Dortmund, DE
• Andreas Fiol · Norderstedt, DE
• Heinrich Kladders · Wiesloch, DE
• Dieter Hochrainer · Bingen, DE
• Bernd Zierenberg · Ingelheim am Rhein, DE

Key dates

• Filing date: Feb 23, 2000
• Grant date: Jan 24, 2006
• Expiry date: Feb 23, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B11/026
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

For meteredly dispensing a liquid over a period of several months from a container which can be stored over a long period of time, the need is for a container which is practically diffusion-tight and in which the liquid does not come into contact with the ambient atmosphere.The cartridge according to the invention is a three-shell container comprising a collapsible bag which contains the liquid, a container which is stable in respect of shape and a stiff metal casing. The cartridge can be releasably connected to a dispensing device. The cartridge can be provided with a micro-opening with which the time for pressure equalisation between the cartridge and the ambient atmosphere can be adjusted. The cartridge is suitable for aqueous and for alcoholic liquids which contain a pharmacologically active substance. The liquid in the cartridge is protected from external influences.The cartridge can be used in an atomiser for producing an inhalable aerosol for the treatment of illnesses.