Computer-Aided Design and Fabrication of Finger Prosthesis

• 作者: Kosei Oono Misuzu Nagami Mitsuhiro Tamamoto Mitsunori Tada Takeshi Murayama Toru Eguchi
• 来源期刊: 生物医学工程(英文)
• 学科: 医学
• 关键词: FINGER PROSTHESES ESTHETIC PROSTHESES COMPUTER-AIDED Design 3D PRINTER Additive Manufacturing
• 年，卷（期）: 2015,（2）
• 页码范围: 98-103
• 页数: 6页
• 分类号: R73

摘要

Custom-made esthetic finger prostheses, which are used for rehabilitation of patients with missing or impaired fingers, have been fabricated manually. However, such fabrication is time-consuming and requires manual skill. Here we propose a computer-aided method for fabricating finger pros-theses to save time and allow fabrications that do not require considerable manual skill. In this method, the dimensions of a patient’s healthy finger on the contralateral hand are first measured using a caliper. Using these dimensions, a three-dimensional model is constructed for fabricating a prosthesis for the patient’s impaired finger. Using the 3D model, a mold is designed using 3D modeling tools and a computer-aided design system. The resulting mold is then fabricated using a 3D printer. A finger prosthesis is fabricated by pouring silicone resin into the mold. A finger prosthesis for a volunteer was experimentally fabricated according to the proposed method. To evaluate the size and shape of the finger prosthesis, the difference between the finger prosthesis and the original finger of the volunteer was analyzed. Because the average difference between them was 0.25 mm, it was concluded that the proposed method could be used to fabricate a finger prosthesis of adequate size and shape.