Assembly and Indicator for a Drug Delivery Device
First Claim
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 moveable 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, whereinthe piston rod and the indicator are configured to mechanically interact for converting movement of the piston rod into movement of the indicator, and whereina 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, anda 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.
1 Assignment
0 Petitions
Accused Products
Abstract
An assembly for a drug delivery device (1), comprising a housing (2) having a proximal end and a distal end, a piston rod (8) and an indicator (13). The piston rod (8) is adapted to be displaced distally with respect to the housing (2) away from a proximal start position and towards a distal end position for delivering a drug (31). The indicator (13) is adapted for indicating at least two different operation conditions of the assembly, the indicator (13) being moveable with respect to the housing (2) 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 (8) and the indicator (13) are configured to mechanically interact for converting movement of the piston rod (8) into movement of the indicator (13). A first detent (21) is provided which is configured to releasably secure the indicator (13) in the first indication position such that movement into the second indication position is allowed. A second detent (22) is provided which is configured to secure the indicator (13) in the second indication position such that movement into the first indication position is prevented.
106 Citations
16 Claims
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1. An assembly for a drug delivery device, comprising:
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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 moveable 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, wherein the piston rod and the indicator are configured to mechanically interact for converting movement of the piston rod into 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, and 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. 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.
Specification