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The working mechanism of an autoinjector

Steve Mould, 13 min, 2.4M views, Jul 31, 2025

Original title: The EpiPen Chain Reaction

Show description

Try AnyDesk today: https://anydesk.com/stevemould An EpiPen executes 3 mechanisms in quick succession when you press the tip against your thigh. You can buy my books here: https://stevemould.com/books You can support me on Patreon and get access to the exclusive Discord: https://www.patreon.com/stevemould just like these amazing people: Glenn Watson Peter Turner Joël van der Loo Matthew Cocke Mark Brouwer Deneb Twitter: http://twitter.com/moulds Instagram: https://www.instagram.com/stevemouldscience/ Facebook: https://www.facebook.com/stevemouldscience/ TikTok: https://www.tiktok.com/stevemould Buy nerdy maths things: http://mathsgear.co.uk