Group Members:

Damien Calderon

Etse-Oghena Campbell

Dorothy Lua-Jorgensen

Table of Contents

I. Introduction

II. Problem Statement / Background

III. First Prototype: 7-Bar Retractor

IV. Final Prototype: Variable Ground Link (VGL) Parallelogram 4-Bar Retractor

V. Material Selection

VI. Results, Conclusion, and Further Work

VII. Matlab / Arduino Code

VIII. Citations

IX. Acknowledgements