Assembly for a drug delivery device comprising a feedback feature

Patent metadata

Field	Value
Publication number	US-2016008549-A1
Application number	US-201414770845-A
Country	US
Kind code	A1
Filing date	Mar 10, 2014
Priority date	Mar 13, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

An assembly for a drug delivery device is provided, the assembly comprising an actuator which is configured to be operated in order to dispense a dose of medication and a feedback feature being configured to give a feedback signal to a user at the end of a dwell period after the actuator has reached an end position.

First claim

1 - 15 . (canceled)

16 . An assembly for a drug delivery device, the assembly comprising an actuator which is configured to be operated in order to dispense a dose of medication and a feedback feature being configured to give a feedback signal to a user at the end of a dwell period after the actuator has reached an end position.

17 . The assembly according to claim 16 , comprising a resilient member, wherein the resilient member is deformed during the setting and/or the dispensing of a dose, and wherein a feedback signal occurs after a relaxation of the resilient member.

18 . The assembly according to claim 17 , wherein the resilient member is configured as a spring member.

19 . The assembly according to claim 17 , wherein a relaxation of the resilient member causes the feedback signal to be given by the feedback feature.

20 . The assembly according to claim 16 , wherein the feedback feature comprises the resilient member, and wherein the feedback signal is given by the resilient member.

21 . The assembly according to claim 16 , wherein the feedback feature comprises a snap feature, wherein the snap feature is configured to snap through at the end of the dwell period.

22 . The assembly according to claim 16 , wherein the feedback feature is configured to axially move during the dwell period.

23 . The assembly according to claim 16 , wherein the feedback feature comprises at least one flexible arm.

24 . The assembly according to claim 17 , comprising a ratchet feature, wherein the resilient member is coupled to the ratchet feature.

25 . The assembly according to claim 24 , wherein the resilient member is decoupled from the ratchet feature when a load on the resilient member exceeds a certain value.

26 . The assembly according to claim 24 , comprising a clutch member which is coupled to the ratchet feature, and wherein the clutch member is decoupled from the ratchet feature when the load on the resilient member exceeds a certain value.

27 . The assembly according to claim 16 , comprising a first feedback element which is configured to rotate with respect to a second feedback element.

28 . The assembly according to claim 17 , comprising a damping feature, wherein the damping feature retard a relaxation of the resilient member.

29 . The assembly according to claim 16 , comprising a piston rod wherein the feedback feature is arranged at a distal end of the piston rod.

30 . The assembly according to claim 16 , comprising an electronic module which is configured to track the motion of components of the assembly in order to determine when the actuator is at an end position.

Assignees

• Sanofi Aventis Deutschland

Inventors

• Plumptre David Aubrey
• Rekaya Naceur
• Draper Paul Richard
• Griffin Paul
• Gilmore Stephen Francis

Classifications

• A61M5/31541

  Means preventing setting of a dose beyond the amount remaining in the cartridge · CPC title

• A61M5/31585

  performed by axially moving actuator, e.g. an injection button · CPC title

• A61M2205/582

  by tactile feedback · CPC title

• A61M5/5086

  for indicating if defective, used, tampered with or unsterile · CPC title

• A61M2205/581

  by audible feedback · CPC title