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

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

Background Procedure looks at: Vocal cords Larynx Other throat structures Probe requires fine motor control

Background (cont.) No widespread use of training model Sensitive regions in nasal passage and larynx Turbinates “No-touch” structures cal html

Motivation Competing devices Feedback from doctors Modeling advantages

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

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

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

Exterior Mannequin head Plastic Styrofoam Existing anatomical model Custom frame ID=19004&link=&group=&img=6013.jpg&category= exik/Larynx-posterior-146.JPG

“No-touch Zones” Shingle design “Operation” /jo htm

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

Data Processing Analog circuit Comparator Computer LabVIEW

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 Accuracy Feasability Durability Useability N/A 510 Cost Safety0.1886N/A 72 Total

Future Work Obtain CT data for measurements Construct model Interface model with LabVIEW tomy.html

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

References Department of Otolaryngology Head and Neck Surgery [online] Accessed 16 Oct 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 James Miller. Accessed 16 Oct. 2008