Medication delivery device

US9205196B2 · kind B2 · utility

Assignee

• Sanofi-Aventis Deutschland GMBH · DE

Inventors

• Michael Harms · Frankfurt am Main, DE
• James Roberts Howarth · Cambridge, GB
• Robin Craig Cocker · Oldham, GB
• George Richard Gregory · Frankfurt am Main, DE
• Anthony Raymond Caharpentier · Frankfurt am Main, DE
• Michael Strehl · Frankfurt am Main, DE
• Udo Leuschner · Traunwalchen, DE
• Norbert Besenhardt · Frankfurt am Main, DE

Key dates

• Filing date: Dec 30, 2013
• Grant date: Dec 8, 2015
• Expiry date: Dec 30, 2033

Classification

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

Abstract

A method of preventing setting a dose which exceeds an amount of medication contained in a medication receptacle of a medication delivery device. The device comprising a piston rod comprising a second stop element, a drive device for moving the piston rod, and a dose setting member for setting a dose. The method comprising the steps of moving a dose limiting member which comprises a first stop element axially with respect to the piston rod during dose setting, and utilizing the first and second stop elements to stop an axial movement of the dose limiting member in the proximal direction when the first and second stop elements catch, limiting a movement of the dose setting member for increasing a set dose of medication. The dose limiting member and the piston rod only interact directly, when the first and second stop elements catch.