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Computer-Aided Grid-Editing System for Supporting the Design of Rapid Prototyping Transtibial Sockets

[+] Author Affiliations
Wei-Chiao Chuang, Lai-Hsing Hsu, Chih-Wei Lai

National Cheng Kung University, Tainan, Taiwan, R.O.C.

Gwo-Feng Huang

Fooyin University, Kaohsiung, Taiwan, R.O.C.

Paper No. IMECE2009-10758, pp. 567-573; 7 pages
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 4: Design and Manufacturing
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4377-2 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME


This study is to develop an easily-used editing system for designing a transtibial socket that will be fabricated by a rapid prototyping (RP) machine. This study uses STL format data to construct the editing model. This grid-editing system is developed by employing C++/CLI and the OpenGL graphic interface. It could conveniently import three-dimensional scanner data and export appropriate data format for RP machines. The proposed system includes filtering the point data, generating mesh, and editing point data. After being edited, a socket is constructed by the mesh model. The socket model is then coupled with a base that will be used to connect a shank. Because the system only modifies the point data, it could have high efficiency and freedom while designing transtibial sockets. To achieve an easy-to-use program, the self-developed software is very distinct with other commercial software, such as colliding deformation and grid-editing methods. Based on the concept of virtual reality, users could operate this software intuitively. This system may allow a prosthetist to design RP sockets conveniently. The results of case studies demonstrated the feasibility of this grid-editing system for transtibial socket design.

Copyright © 2009 by ASME



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