English: Inner part of an adrenaline autoinjector.
1- Four latch mechanisms that hold the plunger secure
2- The loaded spring that drives the plunger and the needle (toward the right)
3- The plunger
4- Adrenaline solution
5- Outer body. When retracted upward (left) exposes the needle and triggers the latch mechanism. Later springs back to cover the needle after use
6- Needle exits through a protective barrier when this is pressed against the skin
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