Patent · US Active

Medicament delivery devices

US9572927B2 · kind B2 · utility

26Cited by

2References

11Claims

0Family size

Assignee

Sanofi-Aventis Deutschland GMBH · DE

Inventors

Ulrich Bruggemann · Frankfurt am Main, DE
Christopher Jones · Leicester, US

Key dates

Filing date	Feb 3, 2010
Grant date	Feb 21, 2017
Priority date	—
Expiry date	Jun 14, 2031

Classification

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

Abstract

A medicament delivery device comprises a housing, a telescopic piston rod assembly for driving a bung of a medicament container, and a drive mechanism for the telescopic piston rod assembly. The telescopic piston rod assembly comprises a plunger for driving a bung, a key for allowing predominantly axial movement between the plunger and the housing and an input drive telescopically coupled to the plunger and supported for rotational and axial movement relative the housing. The drive mechanism additionally comprises a transfer drive that operates to rotate the input drive. As the input drive rotates, it moves axially relative to the housing, expanding telescopically relative to the plunger.

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