Micro Fabrication of a Nerve Stimulator for a Retinal Prosthetic Device

1
Micro Fabrication of a Nerve Stimulator for a
Retinal Prosthetic Device

• Michael McNutt
• Committee
• Dr. Ahmed
• Dr. Wheeler
• Dr. Wiener

2
Overview

• Introduction
• Previous Work
• Design and Testing
• Timeline
• Conclusion
• Questions

3
Introduction

• Retinal Prosthesis
• Macular Degeneration
• Retinitis Pigmentosa
• Other Uses for a Nerve Stimulator
• Spinal injuries
• Hand prosthetics
• Drug delivery system

4
Overview of the eye
5
Previous Work (Retinal prosthesis)

• Ultimate goal is to fill in for lost
  photoreceptors
• Types of retinal devices
• Temporary chips placed on the retina
• Retinal Chip
• External Cameras

6
Previous Work (Nerve Growth)

• Use Nerve Growth Factors on the Chip
• Chip placed in a bath of nutrients and proteins
  to aid in growth in vitro
• Current Problems
• Correct direction of growth
• Stimulation of the Nerve
• Adhesion to the chip

7
Design and Testing

• Design
• Retinal prosthetic device
• Retinal Chip
• Nerve stimulator
• Micro Electrical Mechanical Systems
• Using LASI to Layout the device
• Testing of the device
• Growing the Nerves in a Petri dish
• Horse shoe crap

8
Timeline

• Spring 2003
• Researching previous work
• Summer 2003 Fall 2003
• Developing the circuit
• Grow nerve cells on to a Si chip
• Winter 2003 2004
• Fabrication and testing of the device

9
Conclusion

• Introduction
• Previous Work
• Retinal prosthesis
• Nerve growth
• Design and Testing
• Timeline

10
Questions?