Patent ID: 8608698

Claim:
An apparatus, comprising: a housing; a needle movably disposed within the housing, the needle configured to be placed in fluid communication with a medicament container, the needle configured to be moved in a first direction 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 when the needle is in the second needle position; a first energy storage member disposed within the housing, the first energy storage member configured to produce a first force when the first energy storage member is actuated; a second energy storage member disposed within the housing, the second energy storage member configured to be actuated in response to the first force to produce a second force to move a portion of a plunger within the medicament container when the needle is in the second needle position; a third energy storage member configured to produce a third force to move the needle in a second direction opposite the first direction; a transfer member configured to move within the housing when the first energy storage member is actuated, a portion of the transfer member configured to move the second energy storage member; and a release member configured to release at least the second force from the portion of the plunger, the needle configured to move in the second direction after the second force is released.