Patent · US Active

Drive mechanism for a drug delivery device

US11291774B2 · kind B2 · utility

3Cited by

0References

19Claims

0Family size

Assignee

Sanofi · FR

Inventors

Stefan Bayer · Würselen, DE
Daniel Berning · Baesweiler, DE
Philippe Blank · Düsseldorf, DE
Wolfgang Pelzer · Kreuzau, DE
Björn Wilden · Simmerath, DE

Key dates

Filing date	Apr 8, 2014
Grant date	Apr 5, 2022
Priority date	—
Expiry date	Oct 27, 2035

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2005/3152
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The present invention relates to a drive mechanism of a drug delivery device for setting and dispensing of a dose of a medicament, the mechanism comprising: a housing (20), a piston rod (120) to operably engage with a piston (14) of a cartridge (12) to displace the piston (14) in a distal direction (1), a rotatable member (80) arranged on an axially extending axis of rotation (4) in the housing (20), said rotatable member (80) being rotatable in a dose incrementing direction (5) against the action of a spring element (78) and being operably engageable with the piston rod (120) during dose dispensing, a clutch member (150) comprising at least one radially displaceable clutch element (153) to engage with a rim (82) of the rotatable member (80) with variably adjustable strength.

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