DRIVE MECHANISM FOR A DRUG DELIVERY DEVICE AND DRUG DELIVERY DEVICE

• US 20150238699A1
• Filed: 09/09/2013
• Published: 08/27/2015
• Est. Priority Date: 09/11/2012
• Status: Active Grant

• Current Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Original Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Inventors: Butler, Stephen David, Horlock, Mark Philip
• Granted Patent: US 10,780,231 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 5/31555 by purely axial movement of dose setting member, e.g. during setting or filling of a syringe
• CPC Class Codes: A61M 5/3157 Means providing feedback signals when administration is completed A61M5/20 takes precedence
• CPC Class Codes: A61M 5/3158 performed by axially moving actuator operated by user, e.g. an injection button

Abstract

The present invention concerns a drive mechanism for a drug delivery device comprising a housing having a longitudinal axis, a first feedback element which is movable along the longitudinal axis relative to the housing and a second feedback element, wherein the first feedback element and the second feedback element are adapted to interact with each other thereby providing at least one of tactile and audible feedback during at least one of a dose setting and dose dispensing operation of the drive mechanism. Moreover a drug delivery device incorporating such a drive mechanism is disclosed.

Claims

1-15. -15. (canceled)

16. A drive mechanism for a drug delivery device, comprising a housing having a longitudinal axis,

a first feedback element which is movable along the longitudinal axis relative to the housing and

a second feedback element,

wherein the first feedback element and the second feedback element are adapted to interact with each other, thereby providing at least one of tactile and audible feedback during at least one of a dose setting and dose dispensing operation of the drive mechanism.

17. The drive mechanism according to claim 16, wherein feedback is provided continuously during at least one of a dose setting and dose dispensing operation of the drive mechanism.

18. The drive mechanism according to claim 16, comprising a dose member which comprises the first feedback element.

19. The drive mechanism according to claim 16, wherein the first feedback element comprises a helical structure.

20. The drive mechanism according to claim 16, wherein the first feedback element comprises a groove.

21. The drive mechanism according to one claim 16,

wherein the first feedback element comprises a first surface configured to interact with the second feedback element during at least one of a dose setting and dose dispensing operation of the drive mechanism, and

wherein the first surface is structured.

22. The drive mechanism according to claim 21, wherein the first surface comprises structure elements and wherein the structure elements of the first surface are equally spaced.

23. The drive mechanism according to claim 21, wherein the structure elements of the first surface are spaced further apart at one end of the first surface than at another end of the first surface.

24. The drive mechanism according to claim 16,

wherein the first feedback element comprises a second surface configured to interact with the second feedback element during at least one of a dose setting and dose dispensing operation of the drive mechanism, and

wherein the second surface is smooth.

25. The drive mechanism according to claim 16, wherein the first feedback element and the second feedback element are adapted to interact with each other, thereby providing feedback only during a dose dispensing operation of the drive mechanism.

26. The drive mechanism according to claim 16, comprising a sleeve, wherein the first feedback element is arranged at a surface of the sleeve.

27. The drive mechanism according to claim 16, wherein the second feedback element comprises a peg.

28. The drive mechanism according to claim 16, wherein the second feedback element is rotatable around the longitudinal axis of the housing.

29. The drive mechanism according to claim 16, wherein the second feedback element is prevented from a movement along the longitudinal axis of the housing.

30. A drug delivery device comprising a drive mechanism according to claim 16.