1. Transnasal Endoscopic Model Justin Lundell, Mike Socie, Alice Tang, Karissa Thoma Advisor: Willis Tompkins Client: Brian Petty, M.A.

2. Outline Background Problem statement Design requirements Design alternatives Design evaluation/Future work Acknowledgements/References

3. Background Procedure looks at: Vocal cords Larynx Other throat structures Probe requires fine motor control http://www.olympus-global.com/en/corc/history/chron/n260.cfm

4. Background (cont.) No widespread use of training model Sensitive regions in nasal passage and larynx Turbinates “No-touch” structures http://www.udel.edu/PR/UDaily/2008/jul/vo cal073107.html

5. Motivation Competing devices Feedback from doctors Modeling advantages

6. Problem Statement Model must: Be anatomically correct Provide user feedback when mistakes occur Use materials with life-like textures Not damage endoscope

7. Design Requirements Accurately model nasal passages and larynx Detection of: Rapid pressure changes on turbinates Contact with “no-touch zones” Materials compliance similar to natural structures Must not damage scope Cost < $3000

8. Design Alternatives Exterior “No-touch zones” Turbinate pressure sensing Data processing

9. Exterior Mannequin head Plastic Styrofoam Existing anatomical model Custom frame http://www.specialtystoreservices.com/Productdetails.aspx?product ID=19004&link=&group=&img=6013.jpg&category=3139 http://www.montgomerycollege.edu/~wol exik/Larynx-posterior-146.JPG

10. “No-touch Zones” Shingle design “Operation” http://www.austinprop.com/jo2 00305/jo051603.htm

11. Turbinate Pressure Sensing Fluid pressure sensors Mechanical sensors Fluid pressure sensor Strain gauges

12. Data Processing Analog circuit Comparator Computer LabVIEW

13. Design Evaluation Exterior Options Turbinate Options No-Touch Zones Force Processing CriteriaWeight Mannequin Head Existing Models Custom Frame Mechanical Sensors Fluid Sensors Shingles "Operation Model" AnalogComputer Accuracy0.2810458896 Feasability0.35973586675 Durability0.15886877769 Useability0.151098N/A 510 Cost0.05106 687985 Safety0.1886N/A 72 Total18.758.105.055.677.806.826.596.337.61

14. Future Work Obtain CT data for measurements Construct model Interface model with LabVIEW http://www.hopkinsmedicine.org/otolaryngology/sinus/ana tomy.html

15. Acknowledgements Brian Petty Wes Heckman, M.D. Willis Tompkins JoAnne Robbins John Webster

16. References Department of Otolaryngology Head and Neck Surgery. 2007. [online] http://www.entcolumbia.org/tne.html. Accessed 16 Oct. 2008. Kerner, Karen et al. Augmented Reality for Teaching Endotracheal Intubaton: MR Imaging to Create Anatomically Correct Models. AMIA Annu Symp Proc. 2003; 2003: 888. Marching Through the Visible Human Man [online] 17 Sept. 2007. James Miller. Accessed 16 Oct. 2008