top of page
Analysis

Before we started with the design of the prosthesis, we did a lot of reseach to other open source prostheses, we have also looked how EMG works and which sensor would be the best to use for our project. In one of the last phases of the reseach we talked to a transradial amputee, this gave us much insight into the requirements the prosthesis must have.

 

The complete analysis results can be read in a PDF  version. With the results from the analysis we made our design requirements, to wich the project must comply.

Requerements and wishes

boundary condition​

  • The prosthesis shall work work with trans-radial/ulniar level

  • The prosthesis will be driven by EMG

  • The prosthesis will be developed with reletief easy technology like 3D printing and Arduino

  • The total cost must be below €200 ,-

  • The prosthese must be an add8tion to the open-source community

​

​

Materials

  • Myoware EMG sensor

  • Arduino

  • FSR sensor

​

Functionality

  • The hand should be in natural opened stand

  • Every finger will be driven by a seperate servo

  • On / Off button

  • The battery has to be as close as possible to the body

  • The EMG sensor has to as thin as possible

  • The prosthesis must not have to many menu options or different sensors

  • FSR sensor in finger tops

  • Anti-slip on the fingertips

  • The prosthesis must not be wider than 110 mm

  • The prosthesis must have grip patterns (see chapter grip patterns)

  • The prosthesis may not be operated with actieve tension effort

  • The thumb must (passief) be able to oppose

  • The fingers on the prothesis must be open in rest pposition, however not locked. (with the exception of the index finger)

  • The index finger must be locked in rest position

  • The wrist must be able to oppose

​

 whisses

  • LED Battery indication

  • LED grip pattern indicator

  • When battery is empty the hand must open automatically

  • A herringbone profile in the sleeve

bottom of page