Feedback Mechanism for an Injection Device
AssigneeSanofi-Aventis Deutschland GmbH
InventorsMarc Schader, Matthias Rau, Sebastian Braun
Life of this patent
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Abstract
A feedback mechanism for an injection device that is configured to deliver a medicament to a user is described. The feedback mechanism comprises an actuator and a fluid chamber having a restricted outlet. The actuator is adapted to urge fluid from the fluid chamber through the restricted outlet. The feedback mechanism also has an indicator that is adapted to provide feedback to the user after a predetermined volume of fluid has passed from the fluid chamber through the restricted outlet during use of the injection device.
Claims21
-15. (canceled)
A feedback mechanism for an injection device, the injection device configured to deliver a medicament to a user, the feedback mechanism comprising:
- an actuator;
- a fluid chamber having a restricted outlet, wherein the actuator is configured to urge fluid from the fluid chamber through the restricted outlet;
- and
- an indicator configured to provide feedback to the user after a predetermined volume of fluid has passed from the fluid chamber through the restricted outlet during use of the injection device.
An injection device comprising:
- a medicament delivery mechanism comprising:
- a reservoir;
- a plunger configured to displace medicament from the reservoir for delivery to a user during use of the injection device;
- and
- a feedback mechanism comprising:
- an actuator;
- a fluid chamber having a restricted outlet, wherein the actuator is configured to urge fluid from the fluid chamber through the restricted outlet;
- and
- an indicator configured to provide feedback to the user after a predetermined volume of fluid has passed from the fluid chamber through the restricted outlet during use of the injection device.
A method of using an injection device, the method comprising:
- delivering medicament to a user;
- urging fluid from a fluid chamber through a restricted outlet after the medicament has been delivered;
- and
- providing delayed feedback to the user once a predetermined volume of fluid has passed through the restricted outlet.
Dependencies are inferred from the claim text.