AutoInjector Prototype

A lose design of the spring mechanism inside an autoinjector, used to accurately administer syringe medicine

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Attribution

https://www.owenmumford.com/us/healthcare-professionals-product/autoject-2/

Description

I attempted to model the spring/trigger mechanism that powers devices like the Autoject EI. They allow for the easy administration of medicine like insulin or epinephrine. This includes many pieces.

*injector body - encases all components
*plunger and firing button casing (blue in picture) - houses the springs and plunger rod, hold trigger button
*plunger rod - pushes the syringe to inject medicine; powered by compression of 2 springs
*spring holder (top and bottom)-balance the set of springs on the plunger rod
*indicator (yellow in picture) - barrier between plunger rod and syringe base; aids in measurement of needle depth
This turned out to be way beyond my CAD abilities, so hopefully someone can pick up where I left off and make this product available for those that cannot afford the commercial equivalent.

Materials and methods

3 springs
1 clear window -- optional

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Comments

266c71a44e7acff150184cc085279aac?default=blank&size=40njmcgrat published this design ago