Mobilization Wedge

About this device
Keywords 3D printing, mobilization wedge, physical therapy, spine health
Uses medical, development
Authors Fred Aiken
Status prototype
Made? Yes
Replicated? No
Designed in United States
Materials Plastic
Cost USD $ 3.60
SDGs SDG08 Decent work and economic growth
SDG03 Good health and well-being
Instructions data
Manufacturing files https://www.youmagine.com/designs/mobilization-wedge
Documentation data
Language English
Manifest data
Language English
Updated 2020-06-04
Author Kathy Nativi
Author affiliation Appropedia
Author email info@appropedia.org

Mobilization Wedge

Project developed by User:Fgaiken

This Open Source Appropriate Technology has been designed but not yet tested — use at your own risk.
This Open Source Appropriate Technology has been prototyped.


Abstract

  1. This is a mobilization wedge used by physical therapists to perform manual spinal mobilization techniques and other various exercises. The tool size is 2" X 7" X 4". This tool is normally $34.99. A conservative estimate for the price of PLA is $20/kg. 3D print cost is approximately $3.60. I created this tool using FreeCAD. The FreeCAD and stl files are attached.
  2. A picture of my completed print is shown to the side. As you can see, the print is incomplete and has poor print quality. This is due to a new calibration issue that has not yet been resolved
  3. A picture of the design is shown below :

Bill of Materials

  1. In order to print this device, approximately 180 grams of PLA is needed.
    1. All CAD and STL files can be found on YouMagine from the following link:

Tools needed for fabrication of the OSAT

  1. MOST Delta RepRap or similar RepRap 3-D printer

Skills and Knowledge Necessary to Make the OSAT

  • No special skills are needed to print this design.

Technical Specifications and Assembly Instructions

  1. There are no assembly instructions. This is a one piece print and it does not require the use of supports when printing. The print however does need to withstand the weight of a person. For that reason, an infill of at least 25% is recommended.
  2. A conservative print time estimate is 9 hours.
  3. There is no assembly time.

Common Problems and Solutions

  • A common problem would be printing with too small of an infill percentage and the part not being strong enough.

Cost savings

  1. This tool is normally $34.99. A conservative estimate for the price of PLA is $20/kg. The print is estimated at 180 grams. 3D print cost is approximately $3.60.
  2. A commercial equivalent product can be found at the following link:
  3. The cost savings is $31.39 per unit. This is a 90% cost savings.

Benefited Internet Communities

  • Doctors without Borders
  • Physical Therapist Forum - WebPT
  • Physical Therapist Forum - The Student Doctor Network
  • UNICEF
  • Oxfam

References

  • All of the information for this design and the use of this design came from discussing it with practicing Doctors of Physical Therapy.

    [[Category:Medical]] [[Category:Physical Therapy]] [[Category:Exercise]]

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