1. Blinking Orbital Prosthesis
Hallie Kreitlow, Joel Gaston, Ryan Kimmel, Allison McArton

2. Outline Problem Statement Background Summary of PDS
Designs and the Matrix
Future Work
Conclusion

3. Problem Statement Realistic blinking orbital prosthesis
Same speed as functional eye
Reasonable size and weight
Non-harmful mechanism and materials
Automated system

4. Background-Orbital Prosthesis
Many causes of eye loss
Prosthesis provide a realistic solution
Currently, prostheses do not blink

5. Background-Problem Motivation
Providing a more realistic prosthesis
Syncing the blinking motion in both eyes
Satisfying the patient
Create interest in the field

6. Product Design Specification
Function
Client Requirements
Design Requirements
Physical and Operational Characteristics
Production Characteristics
Miscellaneous

7. Function Animated orbital prosthesis Currently few attempts
Previously ran a wire from the contralateral eye muscle into orbital prosthesis
Small enough to fit inside eye cavity and contain all parts

8. Requirements Client Requirements
Impart life-like quality to a variety of materials
Thin materials to save weight and space
Synchronization could and should be considered later
We are provided with an adequate budget
Design Requirements
It must be able to function for an entire day, but it doesn’t need to be aesthetically pleasing

9. Physical and Operational Characteristics
Performance Requirements
Safety
Accuracy, Reliability, and Life in Service
Operating Environment
Ergonomics, Size, and Weight
Materials and aesthetics

10. Production Characteristics and Miscellaneous
Quantity
Target Product Cost
Standards and Specifications
Patient-related Concerns
Competition

11. Possible Designs Actuator Movement Attracting Magnetic Field
Repelling Magnetic Field
Memory Metal Circuit
Rachel 11

12. Actuator movement Cons Pros Highly Invasive
Power source must be located in cavity
Components take up a lot of space
Cannot be removed
Pros
Will work regardless of environment outside cavity
Durable
Fairly safe
Rachel 12

13. Design-Common Aspects
Air-core solenoid located in glasses frame
B-Field i

14. Repelling Magnetic Field
Pros
Non-invasive
Power source located outside cavity
Power only used when blink occurs
Cons
Large magnetic field/current required
Compression Spring
Rachel
Eye Lid
B-Field
Permanent magnetic plate
Boundary of Cavity 14

15. Magnetic Field Designs-Alternate View
Top View
Side View

16. Attracting Magnetic Field
Pros
Non-invasive
Power source located outside cavity
Cons
Large magnetic field/current required
Constant power must be provided
Eye Lid
Tension Spring
B-Field
Permanent magnetic plate
Boundary of Cavity

17. Memory Metal Circuit Space efficient Power source located in cavity
Pros
Space efficient
Cons
Power source located in cavity
High current running through wire
Extensive circuit engineering required

18. Design Matrix Rachel 18 Feasability (1-30) Durability(1-25)
Feasability (1-30)
Durability(1-25)
Reliability (1-25)
Cost Effectiveness (1-15)
Safety (1-5)
Total (100)
Actuator movement 15 20 22 3 63
Repelling B-field 25 18 12 78
Attracting B-field 19 77
Memory Metal circuit 5 10 8 1 35
Rachel 18

19. Future Work Research on IR sensor Fabrication of needed parts
Assembly of prototype
Dealing with size issues
Prototype testing
Redesigning and subsequent testing

20. Conclusion Extensive research has been done on orbital prosthesis
Developed several designs and chose the best design
Work still needs to be done

21. Credits
Professor Murphy
Greg Gion
Professor Bruch