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
3-2020
Primary Advisor
Michael Whitt, College of Engineering, Biomedical Engineering Department
Additional Advisors
Christopher Heylman, College of Engineering, Biomedical Engineering Department
Abstract/Summary
California Polytechnic State University’s Biomedical Engineering Department worked in conjunction with local San Luis Obispo orthopedic surgeon Dr. Dimitri Delagrammaticas. The goal of the project was to create a surgical tool that assists a surgeon in measuring knee gap distance and balancing collateral ligament tension during a total knee arthroplasty (TKA) surgery. The final product of this project was completed in five months and initially began with understanding our sponsor’s expectations for the device. A portion of time was devoted to conducting research to understand the process of a knee replacement surgery, the requirements of the device, and the limitations that had to be taken into account when designing this tool. Through the completion of a house of quality based on the customer requirements, engineering specifications were created. Two preliminary prototypes were created before the final device was constructed. Testing was completed on the final device to assess how well the device met the requirements and specifications. The requirements of the device were that it must be able to accurately measure gap distance to within 0.5 mm, clearly display the distance measurement, and be able to measure a 40 mm gap. It was also a requirement that the device must be able to interface with a torque measuring wrench. The device needed to be easy and efficient to use; it should add no more than 15 minutes to a surgery when compared to a surgeon’s current TKA procedure. As the device is a surgical tool, it was required that it would be able to withstand the autoclaving sterilization process which exposes the device to steam at 270℉. The final device successfully passed all tests to validate our engineering specifications and therefore met all performance requirements.
URL: https://digitalcommons.calpoly.edu/bmedsp/124