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

An apparatus, comprising:

• a housing;
• a medicament container at least partially disposed within the housing, the medicament container 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 configured to move at least the second elastomeric member in a distal direction a first distance within the medicament container when the movable assembly moves from a first configuration to a second configuration such that a first substance within the first volume is mixed with a second substance within the second volume, a length of the movable assembly increasing when the movable assembly moves from the first configuration to the second configuration,
• the movable assembly configured to move at least the first elastomeric member a second distance within the medicament container when at least a portion of the movable assembly moves within the housing after the movable assembly has been moved to the second configuration to expel at least a portion of the contents of the first volume and the second volume,
• the movable assembly includes a first movable member and a second movable member, the second movable member configured to move relative to the first movable member to change the movable assembly from the first configuration to the second configuration,
• the movable assembly includes a retention portion configured to limit movement of the second movable member when the movable assembly is in the second configuration.

An apparatus, comprising:

• a housing including an aperture;
• a medicament container at least partially disposed within the housing, the medicament container 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;
• a movable member configured to move at least the first elastomeric member within the medicament container;
• a release member having a pivot portion pivotably couple to the housing via the aperture, a first end portion and a second end portion, the second end portion configured to move between a first position and a second position, the second end portion of the release member configured to limit movement of the movable member when the second end portion is in the first position, the release member configured such that when the first end portion is moved in a first direction, the second end portion moves in a second direction from the first position to the second position, the second direction different than the first direction;
• a needle configured to be placed in fluid communication with the medicament container;
• and
• a needle cover assembly covering at least a portion of the needle when the needle cover assembly is coupled to the housing, the first end portion of the release member coupled to a portion of the needle cover assembly such that when the needle cover assembly is removed from the housing, the first end portion is moved in the first direction.