Patent · US Active

Feedback mechanism for an injection device

US11324895B2 · kind B2 · utility

1Cited by

1References

8Claims

0Family size

Assignee

Sanofi-Aventis Deutschland GMBH · DE

Inventors

Marc Schader · Frankfurt am Main, DE
Michael Kneip · Frankfurt am Main, DE
Matthias Rau · Frankfurt am Main, DE

Key dates

Filing date	Oct 12, 2017
Grant date	May 10, 2022
Priority date	—
Expiry date	Jul 29, 2038

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2205/581
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A feedback mechanism for an injection device that is configured to deliver a medicament to a user is described. The feedback mechanism comprises a piston and a fluid chamber, and the piston is adapted to move into the fluid chamber during use of the injection device. The feedback mechanism also has a damper that is arranged to damp movement of the piston, and an indicator that is arranged to provide feedback to the user after the piston has moved a pre-determined distance into the fluid chamber.

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