| Summary: | 碩士 === 國立成功大學 === 機械工程學系碩博士班 === 100 === This study uses the reverse engineering technology and commercial CAD software Solidworks to design the socket model. Traditional manufacturing process of prosthetic socket depends on the manual skill and experience of a prosthetist. CAD system substitutes traditional manufacturing process is being expected.
Because of the complicated process while using a CAD system, it might be difficult to design a socket model using the CAD system by prosthetists. To overcome the difficulty, this study develops a user-design interface of prosthetic socket model that applied SolidWorks API (Application Programming Interface) functions.
Based on the design conception of PTB (Patella Tendon Bearing), a pressured stump mold is duplicated by employing a vacuum casting tool. A digitized stump model can be obtained by a 3D scanner; and an RP (Rapid Prototyping) socket mold is constructed by using the user-design interface of prosthetic socket model which based on the design conception of TSB (Total Surface Bearing) and prosthetist’s basic expertise. After the RP socket mold has been manufactured by rapid prototyping machine, it’s used as a positive mold to fabricate a PP (Polypropylene) prosthetic socket. Finally, prosthetist assembles the socket with a shank and prosthetic foot, a set of prosthesis is ready to be aligned and tested.
Two unilateral amputees involve in this research, and three sockets are fabricated by using the user-design interface of prosthetic socket model. To verify the applicability of CAD system, this study measures the interface pressure distribution between socket and stump. Finally, we can improve this user-design interface by the subjective opinions of the subjects and experienced prosthetist.
The experiment results show that the interface pressures are reasonable. And the bearing capacity of patella tendon area designed by this system is better than the original one. The subject indicates that the new design socket is more comfortable than the original one, and likes to wear it and be followed up.
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