This project involved the design and prototyping of an epinephrine auto-injector capable of administering two separate doses. Epinephrine auto-injectors are used in the treatment of patients undergoing anaphylaxis, an allergic reaction causing the restriction of airways and a drop in blood pressure. The timely administration of epinephrine counteracts these symptoms and can be lifesaving. Currently the only devices available to consumers administer one unit dose of epinephrine and are then no longer usable. In 30% of cases where patients undergo these symptoms a second dose of epinephrine is required. My design was based partially off the concept behind currently available auto-injectors featuring a compressed spring being released as a propulsion mechanism. The most challenging design concepts for me were to release and contain the springs, and to cover the needle after the first and second doses. The design process, as well as descriptions of the final design, are included in this report
