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Blinking Orbital Prosthesis

Blinking Orbital Prosthesis. Hallie Kreitlow, Joel Gaston, Ryan Kimmel, Allison McArton. Outline. Problem Statement Background Summary of PDS Designs and the Matrix Future Work Conclusion. Problem Statement. Realistic blinking orbital prosthesis Same speed as functional eye

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Blinking Orbital Prosthesis

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  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

  12. Actuator movement • Cons • 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

  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 Eye Lid B-Field Permanent magnetic plate Boundary of Cavity

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

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

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

  18. Design Matrix

  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

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