Patent · US Active

Needle assembly with release mechanism

US8864740B2 · kind B2 · utility

29Cited by

4References

14Claims

0Family size

Assignee

Sanofi-Aventis Deutschland GMBH · DE

Inventors

Michael Schabbach · Weinheim, DE
Daniel Wagner · Pittsburgh, US
Houda Mihad · Frankfurt am Main, DE

Key dates

Filing date	Sep 28, 2011
Grant date	Oct 21, 2014
Priority date	—
Expiry date	Sep 28, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2005/1787
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A needle assembly comprises a body configured for attachment to a drug delivery device. The body defines a cavity. A septum is positioned within the cavity and a stopper positioned within the cavity such that the cavity, septum, and stopper define a reservoir. A double ended needle is positioned in the stopper and septum, the needle comprising a proximal end and a distal end. A release mechanism is positioned near a distal end of the body. A biasing element is positioned to drive the stopper. During a dose dispensing step, the release mechanism drives the proximal end of the needle out of the septum so that the proximal end resides in said reservoir. The biasing element may also drive the stopper proximally.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.