Medication delivery device

US8579867B2 · kind B2 · utility

Assignee

• Sanofi-Aventis Deutschland GMBH · DE

Inventors

• Michael Harms · Frankfurt am Main, DE
• Steffen Raab · Frankfurt am Main, DE
• Dominic George Webber · Cambridge, GB
• James Robert Howarth · Cambridge, GB
• Trevor Beckett · Cambridge, GB
• Geoffrey Philip Gray · Berkhamsted, GB
• John David Cross · Northampton, GB

Key dates

• Filing date: Mar 9, 2012
• Grant date: Nov 12, 2013
• Expiry date: Mar 9, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49826
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A medication delivery device comprising a housing, a medication receptacle, a piston rod which is moveable distally, and a drive device for rotating the piston rod in a first rotational direction. The piston rod comprises two threaded sections, a first threaded section for threaded engagement with a reset element and a second threaded section for threaded engagement with the drive device. In an operational state, the reset element is prevented from rotating and the piston rod prevented from moving proximally. In a resetting state, the reset element is allowed to rotate, such that the delivery device is resettable by rotating the piston rod and the reset element in a second rotational direction and moving the piston rod proximally.