Pen-type drug injection device with controller and time lock-out mechanism for its drive

US11547803B2 · kind B2 · utility

Assignee

• Sanofi-Aventis Deutschland GMBH · DE

Inventors

• Hardy Kietzmann · Frankfurt am Main, DE
• Jasmin Groeschke · Frankfurt am Main, DE
• Hanno Juhnke · Frankfurt am Main, DE
• Jan-Peter Spengler · Frankfurt am Main, DE
• Matthias Scharf · Frankfurt am Main, DE
• Christoph Dette · Frankfurt am Main, DE
• Michael Schrack · Rübgarten, DE
• Olaf Zeckai · Weinheim, DE

Key dates

• Filing date: Jul 10, 2018
• Grant date: Jan 10, 2023
• Expiry date: Oct 11, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/6054
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention relates to a drive mechanism for a drug delivery device, comprising: a piston rod to operably engage with a piston of a cartridge to displace the piston in a distal direction during a dose dispensing action, at least one actuation member mechanically coupled with the piston rod to induce a distally directed displacement of the piston rod when actuated by a user, a control to ascertain at least one predefined condition of use, and at least one interlock member coupled with the control to mechanically obstruct displacement of the piston rod if the condition of use is not fulfilled.