Medicament delivery device

A device for delivering a number of predetermined amounts of medicament, comprising:

• a body having a proximal end and an opposite distal end, extending along a longitudinal axis, and configured to hold a medicament container;
• a driver arranged inside the body and configured to act on the held medicament container, where the driver comprises a plunger rod that rotates relative to the body and the medicament container during delivery of a predetermined amount of medicament from the device;
• a manually movable activation member arranged on the distal end of the body;
• a biased actuator member movable along the longitudinal axis by the manually movable activation member, the biased actuator member being configured to protrude a predetermined distance from a distal end of the manually movable activation member and to interact with the driver when the biased actuator member is moved from the predetermined distance toward the proximal end for delivering the predetermined amount of medicament;
• and
• an actuator guide member having at least one first guide element and being rotatably arranged in and relative to the body and configured to interact with the manually movable activation member and with the biased actuator member such that the actuator guide member is held in a position within the body and is released from the held position after the predetermined amount of medicament is delivered;
• wherein rotation of the manually movable activation member during activation of the device causes rotation of the actuator guide member, and
• wherein the actuator guide member comprises at least one second guide element that is configured to interact with blocking surfaces in at least one group of guide surfaces arranged on an outer circumferential surface of the biased actuator member when the biased actuator member moves toward the proximal end of the body.