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{{777 | {{777 notice}} | ||
[[File:CommercialAutoinjectorAssembled.jpg|thumb]] | |||
== | {{Project data | ||
| authors = User:Njmcgrat | |||
| completed = 2019 | |||
| made = No | |||
- | | replicated = No | ||
| cost = USD 6 | |||
| instance-of = Spring-loaded syringe | |||
}} | |||
AutoInjectors are a spring-loaded device that aides in delivering the proper dosages of certain medicines. The have built-in adjusters to ensure the medicine is delivered at the proper depth in the body. They are useful for those that have trouble using a simple needle for injections, possibly children, the elderly, or those with needle-phobias. They are also useful for injecting pets with their medication. The AutoInjector keeps the needle covered until injection time to prevent injury, and some have a built-in safe measure of requiring the injector to be pushed against the skin before the trigger button can be pushed to prevent accidental discharge. | |||
== Bill of Materials == | |||
# 3.5" by.5" Spring | |||
# 3" by.25" Spring | |||
# 1.5" by.5" Spring | |||
* Optional Clear Plane to use as Window; leaving open works fine as well | |||
* Glue, like a hot glue gun | |||
* all colors are notional and used to specify which piece is being referred to | |||
[[File:backendDisassembledAutoInjector.jpg|thumb|Disassembled AutoInjector]] | |||
# Glue Spring holder Top and Bottom pieces together | |||
# Use hot glue to create small cushion on end of plunger rod, if desired, for comfort and to aid in stabilizing rod | |||
# Place the 1st spring onto the plunger rod. | |||
# Insert the spring holder with the smaller top into the spring with the plunger rod through the middle | |||
# Place the 3rd spring onto the plunger rod, so that it falls into the spring holder. | |||
# Place "yellow" indicator piece onto groves inside "blue" plunger and trigger button piece, with indicator marks facing the viewing hole in the "blue" piece | |||
# Place small end of plunger rod through small hole at the top of the "blue" plunger and trigger button piece | |||
# Place wide end of plunger rod into "yellow" indicator piece. You will have to compress the springs to do this | |||
# Insert #2 spring followed by assembled pieces into Injector body. You will have to push down the trigger button in order to slide the pieces into the body | |||
# Thread long depth adapter into syringe housing | |||
# Insert primer/depth guide into long depth adapter | |||
# Use syringe housing unit to set springs by inserting it into injector body, as far as it will go | |||
# Remove from injector body once springs are set | |||
# Twist syringe housing unit on assemble pieces | |||
== Tools needed | == Tools needed == | ||
* [[AthenaII|MOST Delta RepRap]] or similar RepRap 3-D printer | |||
== Technical Specifications and Assembly Instructions == | |||
The Injector Body needs supports generated when printed for the Trigger Button window; these will be snapped off after printing. | |||
About 4 hours to print all of the parts. | |||
== Cost savings== | 5-10 min for final assembly. | ||
=== Common Problems and Solutions === | |||
* Make sure the springs are loaded properly. Spring positions are not interchangeable* | |||
This project was way beyond my CAD abilities, so not all of the pieces are optimized for printing; Hopefully a someone can improve upon my design | |||
== Cost savings == | |||
* $1 for plastic, $5 for springs, $6 in total | |||
* $27.99 Owen Mumford Autoject EI [https://www.adwdiabetes.com/product/7753/owen-mumford-autoject-2-non-fixed-needle?utm_source=google&utm_medium=cpc&utm_campaign=shopping&gclid=Cj0KCQiAz53vBRCpARIsAPPsz8WcbTtlIFRqfHPr_yBjkORSuqQUXQ7D-0XvU74j5Ermt1iv8Lx-ZCYaAiJKEALw_wcB] | |||
* $22 total savings or a 78% price reduction. | |||
== Benefited Internet Communities == | == Benefited Internet Communities == | ||
* [http://www.k9diabetes.com/forum/ Owners of Dogs with Diabetes] | |||
* [https://stephenking.com/xf/index.php?threads/epipen-experience.2976/ People with Allergies] | |||
[[ | * [https://community.kidswithfoodallergies.org/forum-directory Parents of Kids with Allergies] | ||
* [https://www.diabetes.co.uk/forum/threads/needle-phobia.118065/ People with needle-phobias] | |||
* [https://www.emedevents.com/c/medical-conferences-2019/2019-pre-filled-syringes-forum-by-pharmaed-resources-inc Nurses] | |||
== References == | |||
* DallasMTBR, director. About the Autoject 2. Youtube - About the Autoject 2, Youtube, 18 June 2017, [[www.youtube.com/watch?v=fndalvwKF4s&t=222s]] | |||
* Owen Mumford. Autoject-Brochure. Autoject-Brochure, [[www.owenmumford.com/us/wp-content/uploads/sites/3/2014/12/Autoject-brochure.pdf]] | |||
* Rawlings, Kelly. "Injection Helpers." Main.Diabities.org, 2015, [[main.diabetes.org/dforg/pdfs/2015/2015-cg-injection-aids.pdf]] | |||
<references /> | |||
== External links == | == External links == | ||
* [https://www.youmagine.com/designs/autoinjector-prototype All scad files can be found on my YouMagine page.] | |||
* https://www.change.org/p/epipen-lower-the-cost-of-emergency-allergy-medications | |||
{{Page data | |||
| keywords = 3D printing, autoinjector, medicine delivery, osat, Plastic, Springs | |||
| sdg = SDG03 Good health and well-being | |||
| published = 2019 | |||
| organizations = MTU, Michigan_Tech's_Open_Sustainability_Technology_Lab, MY4777 | |||
| license = CC-BY-SA-3.0 | |||
| language = en | |||
}} | |||
[[Category:OSAT 3D-Printable Designs]] | |||
[[Category:3D printing]] | |||
[[Category:Plastic]] | |||
Latest revision as of 17:41, 29 January 2024
AutoInjectors are a spring-loaded device that aides in delivering the proper dosages of certain medicines. The have built-in adjusters to ensure the medicine is delivered at the proper depth in the body. They are useful for those that have trouble using a simple needle for injections, possibly children, the elderly, or those with needle-phobias. They are also useful for injecting pets with their medication. The AutoInjector keeps the needle covered until injection time to prevent injury, and some have a built-in safe measure of requiring the injector to be pushed against the skin before the trigger button can be pushed to prevent accidental discharge.
Bill of Materials[edit | edit source]
- 3.5" by.5" Spring
- 3" by.25" Spring
- 1.5" by.5" Spring
- Optional Clear Plane to use as Window; leaving open works fine as well
- Glue, like a hot glue gun
- all colors are notional and used to specify which piece is being referred to
- Glue Spring holder Top and Bottom pieces together
- Use hot glue to create small cushion on end of plunger rod, if desired, for comfort and to aid in stabilizing rod
- Place the 1st spring onto the plunger rod.
- Insert the spring holder with the smaller top into the spring with the plunger rod through the middle
- Place the 3rd spring onto the plunger rod, so that it falls into the spring holder.
- Place "yellow" indicator piece onto groves inside "blue" plunger and trigger button piece, with indicator marks facing the viewing hole in the "blue" piece
- Place small end of plunger rod through small hole at the top of the "blue" plunger and trigger button piece
- Place wide end of plunger rod into "yellow" indicator piece. You will have to compress the springs to do this
- Insert #2 spring followed by assembled pieces into Injector body. You will have to push down the trigger button in order to slide the pieces into the body
- Thread long depth adapter into syringe housing
- Insert primer/depth guide into long depth adapter
- Use syringe housing unit to set springs by inserting it into injector body, as far as it will go
- Remove from injector body once springs are set
- Twist syringe housing unit on assemble pieces
Tools needed[edit | edit source]
- MOST Delta RepRap or similar RepRap 3-D printer
Technical Specifications and Assembly Instructions[edit | edit source]
The Injector Body needs supports generated when printed for the Trigger Button window; these will be snapped off after printing.
About 4 hours to print all of the parts.
5-10 min for final assembly.
Common Problems and Solutions[edit | edit source]
- Make sure the springs are loaded properly. Spring positions are not interchangeable*
This project was way beyond my CAD abilities, so not all of the pieces are optimized for printing; Hopefully a someone can improve upon my design
Cost savings[edit | edit source]
- $1 for plastic, $5 for springs, $6 in total
- $27.99 Owen Mumford Autoject EI [1]
- $22 total savings or a 78% price reduction.
Benefited Internet Communities[edit | edit source]
- Owners of Dogs with Diabetes
- People with Allergies
- Parents of Kids with Allergies
- People with needle-phobias
- Nurses
References[edit | edit source]
- DallasMTBR, director. About the Autoject 2. Youtube - About the Autoject 2, Youtube, 18 June 2017, www.youtube.com/watch?v=fndalvwKF4s&t=222s
- Owen Mumford. Autoject-Brochure. Autoject-Brochure, www.owenmumford.com/us/wp-content/uploads/sites/3/2014/12/Autoject-brochure.pdf
- Rawlings, Kelly. "Injection Helpers." Main.Diabities.org, 2015, main.diabetes.org/dforg/pdfs/2015/2015-cg-injection-aids.pdf