New Orleans, Louisiana
June 26, 2016
June 26, 2016
August 28, 2016
It is a common that engineering students are required to take a capstone design project course before graduation. For students who are interested in biomedical engineering, a design project can be one of medical device system, including orthopedic implants, prosthetics, biomaterials, instruments and more. Students followed the design control and development process (design input, design output, review, verification and validation, and prototyping), and use many engineering means through the process, such as CAD, FEA, 3D printing, machining and testing. However, for the case of orthopedic device, most of educational studies focus on the implant itself, neglecting other important factors including surgical procedure and surgical guide for the system. For a successful implant surgery, following the correct surgical procedure is critical, and the implant with simpler surgical procedure should be sought. Also patients want to go back to normal activity as soon as possible after surgery, increasing the demand of minimally invasive surgery. Biomedical engineering students should understand not only the implant system but also surgical procedure and tooling utilized in the procedure along with it. In that regard, a new task was placed in existing senior level course, ENGR4520 Design & Manufacturing of Biomedical Devices and Systems. ENGR4520 is a semester long course that the students take before their capstone course. The objectives of course are to expose students to the conception, design, modeling, analysis, manufacturing process of biomedical devices and systems as well as FDA regulations For the student groups who selected an orthopedic implant system as a project, students investigated existing devices as a predicate device, but as a new additional task, students asked to focus not only principle of implant design but also surgical procedure and tools that associated with the implant. Then students were introduced the surgical procedure and performed the simplified surgery on artificial bones (SAWBONES. Vashon, WA USA), and investigated the relationship between implant design and procedure/tool, and possibility of improvement in implant design or procedure/tools or both. After that, students groups used the knowledge from the surgical procedure to revise the design. Students made a prototype of new implant design, and then performed the surgery again to verify if new design works well with current procedure/tools. In final presentation, students also presented how this knowledge and experience changed the final design outcomes. It is worth to note that students were not able to mimic exact surgical procedure because of limited time and resources. However, through hands-on practice of surgical procedure, students acquired 1) the better knowledge how the implant that they designed will be used in an operation room by surgeons, 2) better understanding of principle of implant design, 3) importance of surgical procedure and human anatomy knowledge, comparing to studying through computer simulation or lecture only. Feedbacks from student and instructor assessment conclude that the added task helped students to increase understanding of device system they had been working in the class, and general knowledge and interest in biomedical engineering.
Joo, W. (2016, June), Work in Progress: Hands-On Practice of Implant Surgery Using Artificial Bone in Design Course Paper presented at 2016 ASEE Annual Conference & Exposition, New Orleans, Louisiana. 10.18260/p.27012
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