Devices, systems and methods for medicament delivery

An apparatus, comprising:

• a housing;
• a medicament container disposed within the housing, the medicament container including a first plunger and a second plunger, the first plunger, a portion of the medicament container and the second plunger collectively defining, at least in part, a first volume containing a first substance, the second plunger and a distal end portion of the medicament container collectively defining, at least in part, a second volume containing a second substance;
• a mixing assembly including a mixing member and a first spring, the mixing assembly configured to place the first volume in fluid communication with the second volume when the mixing assembly is moved from a first mixing configuration to a second mixing configuration, the first spring configured to produce a mixing force acting on the mixing member to move the mixing assembly from the first mixing configuration to the second mixing configuration when the mixing assembly is actuated;
• and
• an injection assembly including an injection member and a second spring, the injection assembly configured to move the first plunger within the medicament container to expel a mixture of the first substance and the second substance when the injection assembly is moved from a first injection configuration to a second injection configuration, the second spring configured to produce an injection force acting on the injection member to move the injection assembly from the first injection configuration to the second injection configuration when the injection assembly is actuated.

An apparatus, comprising:

• a housing;
• a medicament container disposed within the housing, the medicament container including a first plunger and a second plunger, the first plunger, a portion of the medicament container and the second plunger collectively defining, at least in part, a first volume, the second plunger and a distal end portion of the medicament container collectively defining, at least in part, a second volume;
• a mixing member having a portion in contact with the first plunger, the mixing member configured to move, at least partially within the medicament container, from a first position to a second position to move at least the second plunger within the medicament container;
• a first spring configured to produce a first force to move the mixing member;
• an injection member configured to move the first plunger and the second plunger within the medicament container;
• and
• a second spring configured to produce a second force to move the injection member,
• the mixing member configured to move relative to the injection member when moved from its first position to its second position.

An apparatus, comprising:

• a housing;
• a medicament container disposed within the housing, the medicament container including a first plunger and a second plunger, the first plunger, a portion of the medicament container and the second plunger collectively defining, at least in part, a first volume, the second plunger and a distal end portion of the medicament container collectively defining, at least in part, a second volume;
• a mixing member having a portion configured to move within the medicament container from a first position to a second position to move the second plunger within the medicament container;
• a first spring configured to produce a first force to move the mixing member;
• an injection member configured to move the first plunger and the second plunger within the medicament container;
• and
• a second springy, configured to produce a second force to move the injection member,
• the portion the mixing member being slidably disposed within the injection member.