Devices and methods for delivering medicaments from a multi-chamber container

摘要

An apparatus includes a housing, a medicament container, and a movable assembly. The movable assembly includes a first movable member and a second movable member. The second movable member is configured to move relative to the first movable member to move the movable assembly from a first configuration to a second configuration. A distal end portion of the second movable member is configured to move a plunger disposed within the medicament container in a distal direction when the movable assembly is moved to the second configuration. The movable assembly is configured to move between a first position and a second position to move the medicament container within the housing between a first container position and a second container position.

主权项

1. An apparatus, comprising:
a housing; a medicament container assembly at least partially disposed within the housing, the medicament container assembly including a first elastomeric member and a second elastomeric member, the first elastomeric member defining, at least in part, a first volume, the second elastomeric member defining, at least in part, a second volume; and a movable assembly including a first movable member and a second movable member, the second movable member configured to move within the medicament container assembly in a distal direction relative to the first movable member to change the movable assembly from a first configuration to a second configuration, a distal end portion of the second movable member configured to move at least the second elastomeric member in the distal direction within the medicament container assembly when the movable assembly changes from the first configuration to the second configuration, the first movable member configured to move the first elastomeric member in the distal direction within the medicament container assembly to expel at least a portion of the contents of the first volume and the second volume, the second movable member including a retention portion, the retention portion being retracted when the movable assembly is in the first configuration and being extended when the movable assembly is in the second configuration, the retention portion configured to limit movement of the second movable member in a proximal direction relative to the medicament container assembly when the movable assembly is in the second configuration.