Faculty Advisor
Billiar, Kristen
Abstract
The use of screw-plate fixation after sternotomy is becoming more prevalent but no current device is capable of supplying both the compressive and locking forces needed to fixate the plate to the bone. The goal of project is to create an anti-wobble screw-plate fixation device capable of reducing sternal displacement on a clinically relevant scale by the use of a modified one piece, two-part screw that allows for delayed locking. The device was designed and manufactured to clinical specifications and cyclically tested from 0 to 25N for 15,000 cycles on human sterna. The displacements for standard and anti-wobble systems were respectively 1.45mm and 0.65mm. The results show the anti-wobble system minimized displacement and with minor improvements a clinically relevant product was developed.
Publisher
Worcester Polytechnic Institute
Date Accepted
April 2011
Major
Biomedical Engineering
Project Type
Major Qualifying Project
Copyright Statement
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Accessibility
Unrestricted
Advisor Department
Biomedical Engineering