1. Group 21 Eye Muscle Prosthesis
Team Members:
Brett Boskoff Matt Patton Jeff Tse
Advisors:
Leonard Pinchuk, Ph.D., D.Sc.
Stewart Davis, M.D.
Innovia LLC

2. Problem Statement Extraocular Muscle Strabismus Double Vision
Amputation
Dysfunction
Paralysis
Strabismus
Double Vision
Specific problem we are designing for

3. Problem Background Functional endoscopic sinus surgery (FESS)
3rd nerve palsy (oculomotor nerve palsy)
6th nerve palsy (abducens nerve palsy)
Ocular fibrosis syndrome
Causes of the problem

4. Previous Solutions Eye patch or special spectacles
Permanently suture eye into primary position
Elastic band
Previous solutions, their features, and their disadvantages

5. Design Approach Nose EYE Muscle-Suture Platform Titanium T-plate
Design approach, features, and improvements on previous implants
Spring Coil / Elastomer
Non-absorbable Suture
Titanium Link Connectors

6. Prosthesis
Prosthesis

7. Component Materials / Properties
Titanium T-plate
Nitinol spring
Elastomer (QuatromerTM)
Materials of prosthesis components and their properties with respect to biocompatibility, spring memory, and history as biomaterial

8. Project Goals Create a prototype of the prosthesis
Develop a proof-of-concept model
Develop fatigue test for spring

9. Completed Work Physiological constraints identified
Discarded old design
Prototype failed design requirement inspection
Determined final design of prosthesis
Attaching T-plate, spring / elastic tubing mechanism, and insertion of muscle

10. Future Work Determine component materials for:
Muscle-suture platform
Spring
Determine component dimensions for:
T-plate