1. All (Joe starts)

2. Overview Background Problem Statement Client Requirements Designs
Design Evaluation
Future Work
Arin

3. Background Fluoroscopy- Real time X-ray imaging
Focus- Neck and Spine Fractures
Used when other techniques fail
Arin

4. Problem Statement
Current methods for observing a patients neck under fluoroscopy are overly difficult. Technicians have to physically move the patient’s head in various positions with their hands while the examination is taking place. This is time consuming and potentially dangerous. We are designing a device that will flex and extend the head about the neck.  It provides rotation about the spine isocentric to the normal rotation point for flexion and extension, without obstructing radiographic imaging.
Kyle

5. Client Requirements Mimic natural flexion and extension of neck
45º extension and 25º flexion
Low X-ray attenuation
One person operation
One device
Safety
Kyle

6. Design Goals Portable Easy access for patient Remote operation
Cost less than $10,000
Smooth and comfortable motion
Universal
Kyle

7. Materials Must have low x-ray attenuation Ben

8. Cable Design Cables control head rotation
Achieved by “reeling” mechanism
Ben

9. Cable Design Evaluation
Advantages
Inexpensive
Works easily with motor
Provides good control
Disadvantages
Takes up a lot of space
May not be universal
Safety
Ben

10. Airbag Design Use air to move headboard
Achieve desired angles by the amount of air pumped in
Air pumped in at a constant rate
Joe

11. Airbag Design Evaluation
Advantages
Easy to use
One man operation
Slow and steady rotation
Disadvantages
Bulky, not universal
May not mimic the exact movement of neck
Not precise
Joe

12. Haughton Design Hinge at base for rotation Head support slides on arms
Rests on table
Arin

13. Haughton Design Evaluation
Advantages
Precise movement
Portable
Universal
Safety
Disadvantages
Complexity
Cost
Arin

14. Design Matrix CABLE AIRBAG HAUGHTON TOTAL Category Weight Portability20 10 15 18
Easy Of Use 8 6
Cost 5
Neck Movement 14
Patient Safety 12 16
Durability 7
Complexity 4 3
Accuracy 1
TOTAL
100 64 58 85
Joe

15. Future work Develop working prototype Preliminary tests on humans
Obtain or design head support
Obtain suitable motor
Design remote control interface
Preliminary tests on humans
Obtain certification from IRB
Test on actual patient
Joe

16. References
B.A. Schueler, “General Overview of Fluoroscopic Imaging,” Radiography 20, 1115 (2000).
Joe

17. ?’s
Joe