Transnasal Endoscopic Model Alison Boumeester, Mike Socie, Alice Tang, Karissa Thoma Advisor: Willis Tompkins Client: Brian Petty, M.A., CCC-SLP

Overview Background/Problem Statement Current Design Design Improvements Clinical Implementation Future Work Acknowledgements/References

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

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

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

Current Design Plastic mannequin shell Foam support cross- sections CT data MIMICS Turbinates – air-filled bladders “No-touch” - microswitches

Current Design (cont.) Key problems: Microswitch sensitivity Turbinate system complexity Aesthetics

Design Improvements One feedback system Piezoelectric film Comparator – thresholds Indicator lights http://www.meas-spec.com/downloads/LDT1_028K.pdf Force = electron

Design Improvements (cont.) Physical appearance Movable stand Aesthetics

Clinical Implementation Questionnaire (1-10 rating) Anatomical correctness Educational value Ergonomics Tactile sensation 10 Experienced clinicians 2-5 Medical students

Future Work Implement improvements Have clinicians/students test model Patent consideration http://www.hopkinsmedicine.org/otolaryngology/sinus/anatomy.html

Acknowledgements Brian Petty Willis Tompkins Thomas Yen John Webster Measurement Specialties, Inc.

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