ASSEMBLY FOR A DRUG DELIVERY DEVICE AND DRUG DELIVERY DEVICE

• US 20120259285A1
• Filed: 09/21/2010
• Published: 10/11/2012
• Est. Priority Date: 09/23/2009
• Status: Active Grant

• Current Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Original Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Inventors: Schabbach, Michael, Heger, Serpil
• Granted Patent: US 9,402,959 B2
• Time in Patent Office: Days
• US Class Current: 604/189
• CPC Class Codes: A61M 2005/3125 specific display means, e.g. to indicate dose setting
• CPC Class Codes: A61M 2205/584 having a color code
• CPC Class Codes: A61M 5/20 Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically A61M5/142 , A61M5/46 take precedence; hypodermic projectiles F42B12/54
• CPC Class Codes: A61M 5/3146 Priming, e.g. purging, reducing backlash or clearance
• CPC Class Codes: A61M 5/31525 Dosing burettes, pipettes B01L3/02
• CPC Class Codes: A61M 5/31533 Dosing mechanisms, i.e. setting a dose administrating mechanisms A61M5/31565
• CPC Class Codes: A61M 5/31583 based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod

Abstract

An assembly for a drug delivery device is provided for. The assembly may comprise a housing body having a longitudinal axis. It may have a drive assembly having a drive member, the drive member being configured to be axially displaced with respect to the housing body during operation of the drive assembly for setting and/or dispensing a dose of the drug. The assembly may have a display assembly having a display and an indicator element, the indicator element being axially displaceable with respect to the housing body along the longitudinal axis or the indicator element being rotationally displaceable with respect to the housing body around a rotational axis which is inclined, in particular perpendicular, to the longitudinal axis. The display may be configured such that it displays a first state when the indicator element is in a first position and switches to a second state when the indicator element is displaced away from the first position. The drive assembly may be configured such that the drive member transfers a force to the indicator element which force displaces the indicator element away from the first position when the drive assembly is operated for a first time. Further, a drug delivery device is provided for.

Claims

1. :

An assembly for a drug delivery device comprising

a housing body having a longitudinal axis;

a drive assembly having a drive member, the drive member being configured to be axially displaced with respect to the housing body during operation of the drive assembly for setting and/or dispensing a dose of the drug; and

a display assembly having a display and an indicator element, the indicator element being axially displaceable with respect to the housing body along the longitudinal axis or the indicator element being rotationally displaceable with respect to the housing body around a rotational axis which is inclined to the longitudinal axis;

wherein

the display is configured such that it displays a first state when the indicator element is in a first position and switches to a second state when the indicator element is displaced away from the first position, and

the drive assembly is configured such that the drive member transfers a force to the indicator element which force displaces the indicator element away from the first position when the drive assembly is operated for a first time.

2. :

The assembly of claim 1, wherein the drive assembly is configured such that the indicator element remains displaced away from the first position when the drive assembly is subsequently operated for a second time.

3. :

The assembly of claim 1, wherein the display comprises a window in the housing body and the indicator element is visible through the window to display the first state.

4. :

The assembly of claim 1, wherein the drive member comprises a piston rod and the indicator element is fixed to the piston rod or formed integrally with the piston rod.

5. :

The assembly of claim 3, wherein the drive member comprises a piston rod, the indicator element is fixed to the piston rod or formed integrally with the piston rod, and, when the display displays the second state, a portion of the piston rod which portion is free of the indicator element is visible through the window to display the second state.

6. :

The assembly of claim 2, wherein the drive assembly is configured such that the indicator element is displaced from the first position to a predetermined second position when the drive assembly is operated for said first time.

7. :

The assembly of claim 6, wherein the indicator element remains in the second position when the drive assembly is subsequently operated for said second time.

8. :

The assembly of claim 6, wherein the drive member and the indicator element are decoupled from each other when the indicator element is in the second position.

9. :

The assembly of claim 2, wherein the drive member is configured to be displaced in a first axial direction and subsequently in a second axial direction when the drive assembly is operated.

10. :

The assembly of claim 9, wherein the drive assembly comprises a piston rod, the piston rod being axially displaceable with respect to the drive member and the housing body and the drive member is operable to transfer a force to the piston rod for axially displacing the piston rod when the drive member is displaced in the first and/or second axial direction.

11. :

The assembly of claim 9, wherein the indicator element and the drive member are operable to be axially displaced with respect to each other when the drive member is displaced in the first axial direction.

12. :

The assembly of claim 9, wherein the drive member is operable to transfer said force to the indicator element when the drive member is displaced in the second axial direction during operation of the drive assembly for said first time.

13. :

The assembly of claim 1, wherein the drive member is operable to hold the indicator element in a resiliently biased position before the drive assembly is operated for said first time.

14. :

The assembly of claim 9, wherein

the drive member is operable to hold the indicator element in a resiliently biased position when the drive member is in a rest position before the drive assembly is operated for said first time;

the drive member is inoperable to transfer said force to the indicator element when the indicator element is in the resiliently biased position and the drive member is operable to transfer said force to the indicator element when the indicator element is in an interaction position; and

the assembly is configured such that the indicator element can move radially or rotationally from the resiliently biased position to the interaction position when the drive member is displaced by a predetermined distance from the rest position in the first axial direction.

15. :

A drug delivery device comprising an assembly according to claim 1, wherein the drug delivery device is configured to dispense at least one fixed dose of the drug.