Medicament injection device

US11484662B2 · kind B2 · utility

Assignee

• Sanofi-Aventis Deutschland GMBH · DE

Inventors

• Michael Jugl · Frankfurt am Main, DE
• Axel Teucher · Frankfurt am Main, DE
• Stefan Blancke · Frankfurt am Main, DE
• Michael Helmer · Frankfurt am Main, DE
• Marc Schader · Frankfurt am Main, DE
• Sebastian Braun · Rüsselsheim am Main, DE

Key dates

• Filing date: Nov 21, 2016
• Grant date: Nov 1, 2022
• Expiry date: May 7, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/2474
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A medicament delivery device comprising: a main body arranged to receive a medicament cartridge sealed with a penetrable barrier; a needle carrier carrying a needle; a cap removably coupled to the needle carrier, a pre-stressed spring connected to the needle carrier and to the main body, wherein the pre-stressed spring is held by an activation element coupled to the cap, wherein the activation element is arranged to release the spring when the cap is pulled in a distal direction from the device, thereby causing the needle carrier to move axially in a proximal direction.