College - Author 1
College of Engineering
Department - Author 1
Biomedical Engineering Department
Degree Name - Author 1
BS in Biomedical Engineering
College - Author 2
College of Engineering
Department - Author 2
Biomedical Engineering Department
Degree - Author 2
BS in Biomedical Engineering
College - Author 3
College of Engineering
Department - Author 3
Biomedical Engineering Department
Degree - Author 3
BS in Biomedical Engineering
Date
6-2022
Primary Advisor
Britta Berg-Johansen, College of Engineering, Biomedical Engineering Department
Abstract/Summary
The purpose of this project was to design and prototype a spinal facetectomy tool which will minimize the risk of spinal nerve damage and standardize this procedure for all surgeons. This Final Report for Alphatec describes the scope of the project, the process to get to the final prototype of the device, along with a project timeline for the team. A background of current devices and their issues is included to illustrate the need for a new spinal facetectomy device. Within the scope of the project includes a list of customer requirements for the device and the process of translating these requirements into quantifiable engineering specifications. Once customer requirements and specifications were identified, a morphology was created to identify key functions of the device and possible concepts to fulfill each. Three concepts were compared against a baseline criterion. A design was chosen, and a conceptual model of the device was created using SolidWorks software and a model of the lumbar region of the spine. Failure modes of the device design were identified, and the total risk of each potential was quantified. A detailed design section describes the final concept and has information about the material, cost, and dimensions of the device, along with a new conceptual model. Sections for manufacturing and device tests are included. Instructions for manufacturing the final device have been laid out and tests for each of the engineering specifications have been explained. Test data have been recorded and analyzed with key quantitative results including passing the endurance limit and tensile strength tests by having infinite life with an endurance stress of 102.1MPa and a tensile strength of 361.3MPa with no deformation before an applied 5lbf. A target factor of safety of 3 was passed with an actual factor of safety of 3. Instructions for use have been written in detail for the use of the tool.
URL: https://digitalcommons.calpoly.edu/bmedsp/156