About this project
Millions of people self-inject medication daily, yet existing auto-injectors remain inaccessible, intimidating, and unsafe for many users. In EDNS 151, my team designed a modular self-injection aid to improve comfort, safety, and ease of use for people with needle anxiety, upper-limb impairments, or limited medical experience.
The device features a sliding tip that conceals the needle during injection, a click-in capsule system for easy medication loading and replacement, and an angle guide attachment to ensure proper injection technique. Validated through SolidWorks simulations, physical testing, and stakeholder interviews, the final design withstands 200N of force, stores up to 5mL of medication, and requires under 10N of force to depress the plunger. The device is reusable, with 98% of components recyclable, and designed to retail at $75.