Medicament delivery device for administration of opioid antagonists including formulations for naloxone

An apparatus, comprising:

• a housing defining a first opening and a second opening;
• a medicament container disposed within the housing, the medicament container containing a medicament and configured to be coupled to a needle;
• and
• a movable assembly coupled to the medicament container, the movable assembly including a first movable member, a second movable member and an elastomeric member, the first movable member configured to move within the housing between a first position and a second position in response to a force produced by an energy storage member, the needle disposed within the housing when the first movable member is in the first position, a portion of the needle disposed outside of the housing when the first movable member is in the second position, the second movable member configured to move the elastomeric member within the medicament container when the first movable member is in the second position to convey a medicament from the medicament container via the needle,
• a lock portion of the first movable member configured to be disposed within the first opening of the housing when the first movable member is in the first position, a portion of the movable assembly configured to be aligned with the second opening to produce a visual indication that the medicament has been conveyed.

An apparatus, comprising:

• a housing defining a first opening, a second opening and a third opening;
• a medicament container disposed within the housing, the medicament container including a medicament and configured to be coupled to a needle;
• a movable assembly coupled to the medicament container, the movable assembly configured to move within the housing in response to a force produced by an energy storage member to move the needle from a first needle position to a second needle position, the needle disposed within the housing when the needle is in the first needle position, a portion of the needle disposed outside of the housing via the third opening when the needle is in the second needle position, a portion of the movable assembly configured to move within the medicament container when the needle is in the second needle position to convey the medicament from the medicament container via the needle, the portion of the movable assembly configured to be aligned with the second opening to produce a visual indication that the medicament has been conveyed, a lock portion of the movable assembly configured to be disposed within the first opening of the housing to limit movement of the movable assembly;
• and
• a cover configured to be removably coupled to the housing, the cover configured to cover the third opening of the housing when the cover is coupled to the housing, the cover defining a cover opening configured to correspond with the second opening of the housing when the cover is coupled to the housing.