Method and device for filling needle-free injectors

US6640842B1 · kind B1 · utility

Assignee

• inova pharma systems GmbH · DE

Inventors

• Bernd Laukenmann · Crailsheim, DE
• Michael Mueller · Oettingen, DE
• Juergen Rothbauer · Michelfeld, DE
• Georg Alfred Kallmeyer · Mannheim, DE
• Theo Arnitz · Philippsburg, DE

Key dates

• Filing date: May 10, 2002
• Grant date: Nov 4, 2003
• Expiry date: May 10, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65B57/145
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

In a method and a device for filling needle-free injectors, it is proposed that filling takes place through the injector discharge opening and where the piston stopper has been previously inserted. Filling takes place in such a way that, independently of tolerances of the injector, the interior space is filled to the brim in an at least approximately bubble-free manner. It is not absolutely necessary to measure or dose the liquid to be filled. The filled state is either established through the disappearance of the vacuum in the interior space, or through the piston having reached a specific position during displacement.