You’re using a public version of DrugPatentWatch with 5 free searches available | Register to unlock more free searches. CREATE FREE ACCOUNT

Last Updated: March 29, 2024

Claims for Patent: 9,511,193


✉ Email this page to a colleague

« Back to Dashboard


Summary for Patent: 9,511,193
Title:Assembly and indicator for a drug delivery device
Abstract: An assembly for a drug delivery device, comprising a housing having a proximal end and a distal end, a piston rod and an indicator. The piston rod is adapted to be displaced distally with respect to the housing away from a proximal start position and towards a distal end position for delivering a drug. The indicator is adapted for indicating at least two different operation conditions of the assembly, the indicator being movable with respect to the housing from a first indication position for a first condition of the assembly into a second indication position for a second condition of the assembly. The piston rod and the indicator are configured to mechanically interact for converting movement of the piston rod into movement of the indicator. A first detent is provided which is configured to releasably secure the indicator in the first indication position such that movement into the second indication position is allowed. A second detent is provided which is configured to secure the indicator in the second indication position such that movement into the first indication position is prevented.
Inventor(s): Plumptre; David (Droitwich Spa, GB), Terry; Warren (Leaminston Spa, GB), Veasey; Robert (Leamington Spa, GB), Jones; Matthew (Warwick, GB), Claughton; Timothy Giles (Congleton, GB)
Assignee: SANOFI-AVENTIS DEUTSCHLAND GMBH (Frankfurt am Main, DE)
Application Number:13/392,882
Patent Claims: 1. An assembly for a drug delivery device, comprising: a housing having a proximal end and a distal end, a piston rod which is adapted to be displaced distally with respect to the housing away from a proximal start position and towards a distal end position for delivering a drug, an indicator for indicating at least two different operation conditions of the assembly, the indicator being rotatable with respect to the housing from a first indication position for a first condition of the assembly into a second indication position for a second condition of the assembly, the indicator including an inner member and an outer indication element, wherein the piston rod and the indicator are configured to mechanically interact for converting movement of the piston rod into rotational movement of the indicator, and wherein a first detent is provided which is configured to releasably secure the indicator in the first indication position such that movement into the second indication position is allowed, a second detent is provided which is configured to secure the indicator in the second indication position such that movement into the first indication position is prevented, at least one counter element configured to engage at least one of the first detent or the second detent, the piston rod is rotatable in a first rotational direction with respect to the housing in order to be displaced away from the proximal start position and towards the distal end position for delivering the drug, the indicator is arranged and configured to mechanically interact with the piston rod such that the indicator is rotated together with the piston rod in the first rotational direction in order to move the indicator from the first indication position into the second indication position, the first detent comprises a ramp on the outer indication element of the indicator for releasably securing the indicator in the first indication position, the ramp rising in the first rotational direction, and the second detent irreleasably secures the indicator in the second indication position while the piston rod travels to the distal end position, wherein the inner member and the outer indication element are connected by means of at least one flexible member and, wherein, when the first detent and the second detent are disengaged from the at least one counter element, the at least one flexible member provides a force which tends to displace the outer indication element in the distal direction with respect to the housing.

2. The assembly according to claim 1, comprising a drive member and a dose button, wherein the dose button is moveable with respect to the housing, with movement of the dose button being converted into movement of the drive member by mechanical interaction of the dose button and the drive member, wherein movement of the dose button in the distal direction with respect to the housing causes transition of the indicator from the first indication position into the second.

3. The assembly according to claim 2, wherein the at least one counter element is part of the drive member and, wherein, when the at least one counter element engages with one of the first and second detents, the at least one counter element is disengaged from the other one of the first and second detents.

4. The assembly of claim 1, wherein the inner member comprises at least one second interaction surface, with mechanical cooperation of the second interaction surface and the piston rod keeping the indicator in the first indication position.

5. The assembly of claim 4, wherein the first interaction surface protrudes radially outwardly from the inner member and the second interaction surface is arranged closer to a proximal end of the piston rod than the first interaction surface, and, wherein an angular distance between the second interaction surface and the piston rod is smaller than an angular distance between the first interaction surface and the piston rod.

6. The assembly according to claim 1, wherein the flexible member is secured to an end face of the outer indication element, the flexible member running in the radial direction with respect to the housing and, wherein the flexible member is shaped s-like.

7. The assembly according to claim 1, further comprising a dose button, wherein the dose button comprises a plurality of protrusions arranged on an inner surface of the dose button, the protrusions being configured to mechanically interact with the at least one flexible member such that movement of the indicator away from the second indication position and back towards the first indication position is prevented.

8. The assembly according to claim 1, wherein the indicator is configured to be a prime status indicator and, wherein, the first indication position denotes an unprimed condition of the assembly and, wherein the second indication position denotes a primed condition of the assembly.

9. An indicator for a drug delivery device, the indicator comprising: an inner member and an outer indication element, the outer indication element providing an indication surface and being resiliently connected to the inner member by at least one flexible member, wherein the indicator comprises at least one first detent and at least one second detent, the first detent being adapted to enable rotation of the indicator in a first direction and the second detent being adapted to prevent rotation of the indicator in the direction opposite to the first direction, and wherein the first detent comprises a ramp on the outer indication element, the ramp rising in the first direction.

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.