Design and optimization of prosthetic foot by using polylactic acid 3D printing

This paper describes the complete design process of a passive prosthetic foot manufactured of Polylactic acid (PLA). It focuses on the reduction in the weight of prosthetic feet. Most of the prosthetic feet are designed with more weight and material than required. The structure of this passive prosthetic foot is designed and optimized as light as possible by using topology optimization. The topology-optimized model is printed from a Three-dimensional (3D) printer directly rather than interpreting the model using a Computer-aided design (CAD) software. The finite element analysis and the experiments are conducted to validate the structure. The test equipment is designed and installed for simulating the boundary conditions of the Heel strike (HS) and Toe off (TO). Since the weight of the prosthetic directly affects the mobility of patients, the weight of the proposed model is reduced 62 % when compared initial model to the final model.

[1]  John Park,et al.  Practical Data Acquisition for Instrumentation and Control Systems , 2003 .

[2]  M. Devlin,et al.  Does increased prosthetic weight affect gait speed and patient preference in dysvascular transfemoral amputees? , 2003, Archives of physical medicine and rehabilitation.

[3]  Andrew H Hansen,et al.  The 'Shape&Roll' Prosthetic Foot: I. Design and Development of Appropriate Technology for Low-Income Countries , 2004, Medicine, conflict, and survival.

[4]  Anne Schmitz,et al.  STIFFNESS ANALYSES FOR THE DESIGN DEVELOPMENT OF A PROSTHETIC FOOT , 2007 .

[5]  Jörg Müssig,et al.  Impact and tensile properties of PLA/Cordenka and PLA/flax composites , 2008 .

[6]  Carolyn Conner Seepersad,et al.  Topology Optimization and Freeform Fabrication Framework for Developing Prosthetic Feet , 2009 .

[7]  Dirk Lefeber,et al.  Prosthetic feet: State-of-the-art review and the importance of mimicking human ankle–foot biomechanics , 2009, Disability and rehabilitation. Assistive technology.

[8]  Alena M. Grabowski,et al.  Bionic ankle–foot prosthesis normalizes walking gait for persons with leg amputation , 2012, Proceedings of the Royal Society B: Biological Sciences.

[9]  M. Bendsøe,et al.  Topology Optimization: "Theory, Methods, And Applications" , 2011 .

[10]  Tomáš Návrat,et al.  Finite element analysis for the evaluation of the structural behaviour, of a prosthesis for trans-tibial amputees. , 2012, Medical engineering & physics.

[11]  Barry Berman,et al.  3D printing: the new industrial revolution , 2012, IEEE Engineering Management Review.

[12]  A. Ahmed,et al.  Estimation of sex from the lower limb measurements of Sudanese adults. , 2013, Forensic science international.

[13]  Joost Geeroms,et al.  Ankle-Knee prosthesis with powered ankle and energy transfer for CYBERLEGs α-prototype , 2013, 2013 IEEE 13th International Conference on Rehabilitation Robotics (ICORR).

[14]  Bram Vanderborght,et al.  Passive Ankle-Foot Prosthesis Prototype with Extended Push-Off , 2013 .

[15]  Long Wang,et al.  On the Design of a Powered Transtibial Prosthesis With Stiffness Adaptable Ankle and Toe Joints , 2014, IEEE Transactions on Industrial Electronics.

[16]  Bram Vanderborght,et al.  Design and Validation of the Ankle Mimicking Prosthetic (AMP-) Foot 2.0 , 2014, IEEE Transactions on Neural Systems and Rehabilitation Engineering.

[17]  Mostafa Saied El-Mohandes,et al.  Stiffness analyses of modified niagara prosthetic feet using finite element modelling , 2014, 2014 Cairo International Biomedical Engineering Conference (CIBEC).

[18]  Jonathan Yap,et al.  Low-cost 3D-printable Prosthetic Foot , 2015 .

[19]  Museong Mun,et al.  Biomechanical features of level walking by transtibial amputees wearing prosthetic feet with and without adaptive ankles , 2016 .