Hypodermic injection system

US6258063A · kind A · utility

Assignee

• Roche Diagnostics GMBH · DE

Inventors

• Hans-Peter Haar · Wiesloch, DE
• Manfred Beuttenmuller · Ladenburg, DE
• Markus Mattern · Heppenheim, DE
• George Bevan Kirby Meacham · Shaker Heights, US

Key dates

• Filing date: Sep 24, 1999
• Grant date: Jul 10, 2001
• Expiry date: Sep 24, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/312
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A hypodermic injection system allows for the generation of a high pressure liquid jet capable of passing through the skin. The system uses two regions, the first region being flexible or squeezable and the second region having at least one exiting orifice through which the liquid jet can be expelled. The flexible region can be deformed by a pressure change in the surrounding container generated by an activatable gas generator that generates pressure within the first region that causes the liquid to be expelled.