Autoinjector

A method of dispensing a liquid product, in particular medication, from an autoinjector comprising:

• positioning a needle protection sleeve of the autoinjector on an insertion site in an initial position of the needle protection sleeve in which a distal end of the needle protection sleeve is disposed distally beyond a tip of a needle of a product container, wherein the needle protection sleeve is displaceable into the housing from the initial position;
• and
• pressing a housing towards the insertion site such that the needle protection sleeve moves into the housing and the tip of the needle protrudes from a distal end of the needle protection sleeve, wherein the housing comprises a product container holder for holding the product container, a plunger rod, and a prestressed dispensing spring,
• wherein as the needle protection sleeve is moved into the housing, a locking sleeve is caused to be displaced from a position in which the locking sleeve prevents a first engagement member of a holding element from being moveable out of a recess in the plunger rod and into a release position, and
• wherein in the release position of the locking sleeve, the first engagement member is movable out of the recess of the plunger rod, and upon a movement out of the recess, the dispensing spring displaces the plunger rod in the distal direction such that a piston of the product container is entrained by the plunger rod and the product is dispensed from the product container.