Design and Manufacture of Active Prosthetic Foot for Transtibial Amputee

• Main Author: Dzar Tazakka, Harridhi
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/36143
• Institution: Institut Teknologi Bandung

Active prosthesis restore human gait better than the passive one but usually comes at a higher cost. For example, a typical prosthetic foot available in the market costs around $1000,00 - $100.000,00. Amputees from the middle to low economy class would not be able to afford it. Thus, an affordable prosthetics are needed. The conceptual design of this active prosthetic foot is based on SPARKy (Spring Ankle with Regenerative Kinetics) from Arizona State University but with several modification to achieve affordability. The designed prosthetic foot is evaluated by simulation of able-bodied gait motion. The stress analysis is conducted with the help of ANSYS FE Structural Module. To arrive at an affordable price, the manufacture processes were carefully selected. A DFMA (Design for Manufacture and Assembly) analysis is performed in order to achieve the condition. The finished product was then tested to evaluate its performance. Test result shows that the product is able to withstand the specified loading. The equivalent stiffness value of the energy storing and returning (ESAR) foot is 67,441 N/mm with -7,07% relative error compared to software calculation. The manufacture cost of this active prosthetic foot is Rp7.488.578,00, much lower than typical market value.