The manufacture of personalized alloplastic implants for cranioplasty and its accuracy | |
| Author | Gopakumar, Sunil |
| Call Number | AIT Thesis no.ISE-00-37 |
| Subject(s) | CAD/CAM systems Medical instruments and apparatus |
| Note | A thesis submitted in paitial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ISE-00-37 |
| Abstract | Currently numerous alloplastic implants are being used for reconstructive surgeries for the skull and the facial regions of the human body. Customized implants developed from sheet metal like Titanium, SS 316 L with computer-aided design (CAD) and computed-aided manufacturing (CAM) have been successfully used worldwide. Solid free-form fabrication, such as Rapid Prototyping (RP) and Rapid Tooling (RT) have helped to manufacture prototypes of the implant in comparatively shorter periods of time and the contemporary positive and negative mold halves are used to produce and actual implant. The accuracy of the implants produced greatly affects the operative time and health of the patient. The goal of this thesis is to first define the stages of manufacture of a personalized alloplastic implant and then to compare the manufacturing process of the two different types of implants produced. Emphasis is laid on the manufacture of a titanium implant, as technical know-how of this method remains highly discrete. Although the initial data input in both the manufacturing process are the same they later follow different approaches. In this thesis a condition requiring cranioplasty is simulated and then the approach is adapted to an actual case study. Initially, a prototype of the implant is made in R.P and the bio-compatable implant is later produced from the negative. Later on, an implant is designed by reverse engineering and later developed from the forming of sheet metal, using the conventional punch and die method. Finally, the accuracy of implants in its various stages of manufacture is carefully considered and the most accurate and suitable manufacturing process 1s established. The manufacture of the titanium implant was completed during the course of the thesis work, and the limitations in the accuracy study pointed towards the Computed Tomography scanning process. |
| Year | 2000 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ISE-00-37 |
| Type | Thesis |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Industrial Systems Engineering (ISE) |
| Chairperson(s) | Bohez, Erik L. J.;Wichit Tharanon; |
| Examination Committee(s) | Afzulpurkar, Nitin V.; |
| Scholarship Donor(s) | Asian Institute of Technology;Partial Scholarship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |