Medicament Delivery Device

A medicament delivery device, comprising:

• a housing having a proximal end and a distal end, wherein the housing comprises a first housing part open at the proximal end and the distal end, and a second housing part attached to the distal end of the first housing part;
• a medicament container operably arranged within the housing;
• a delivery member holder fixedly attached to the first housing part;
• a drive mechanism arranged within the housing and configured to act on the medicament container;
• a medicament container holder movably disposed inside the housing and configured to accommodate the medicament container;
• and
• an activator mechanism comprising a contactor operably arranged to the proximal end of the housing, a rotator arranged inside the housing and operably connected to the drive mechanism, and a safety member operably arranged to the distal end of the housing and operably connected to the rotator,
• wherein rotation of the rotator causes the drive mechanism to move the medicament container proximally to engage the delivery member holder, such that a first interaction between the rotator and the drive mechanism moves the medicament container towards a delivery member, and a second interaction between the rotator and the contactor causes a dose of medicament to be expelled through the delivery member.
• wherein the drive mechanism comprises a plunger rod and a force member having predetermined load force configured to act on the plunger rod, wherein the plunger rod is operably connected to the rotator such that turning of the rotator by the safety member causes a release of the plunger rod, and
• wherein the contactor is axially movable with respect to the housing between an extended position and a retracted position in relation to the delivery member.