Elise Larson Michelle Tutkowski Greg Gion Medical Art Prosthetics Willis Tompkins BME Department Blinking Orbital Prosthesis Points of Interest Client Information Background Problem Statement ID: 1047412
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1. Carmen CoddingtonBryan JepsonElise LarsonMichelle TutkowskiGreg Gion-Medical Art ProstheticsWillis Tompkins- BME DepartmentBlinking Orbital Prosthesis
2. Points of InterestClient InformationBackgroundProblem StatementDesign CriteriaCompetitionDesign AlternativesFinal DesignFuture WorkQuestions
3. Greg GionMedical Art Prosthetics ClinicProsthetic ears, noses, eyes, fingers, hands, etc.Provide most life-like restoration as possibleClient Informationhttp://www.medicalartprosthetics.com/content.php?page=prostheses
4. BackgroundMany causes for eye lossOrbital prosthetics give a more natural appearanceProsthetics do not blinkhttp://www.medicalartprosthetics.com/content.php?page=prostheses&sec=orbital
5. Problem StatementOrbital prosthesis that blinks on commandBlinks reliably Primarily self-containedExternal controllerNatural appearancehttp://www.medicalartprosthetics.com/content.php?page=prostheses&sec=orbital
6. Design CriteriaBlinks reliably on commandContained in 5.5 cm3Weigh <45 gNo detrimental health effectsMaintained easily$500 budget
7. Competitionhttp://www.sciencedirect.com.ezproxy.http://www.freepatentsonline.com/20020049023.pdfElectromagnetic ActivatorDoll’s EyelidUS Patent 20020049023http://www.medicalartprosthetics.com/content.php?page=galleries&gallery=orbitalNon-Blinking Prosthesis
8. Mechanical Wind-UpUser winds mechanismBlink controller releases one gear at a timeSpring provides quick retraction of lidLimited blinks per insertionOpenClosedGearSpringShell1 cm 1.1cm
9. Push SolenoidEyelid rotates on central axisTubular, push type solenoid rotates eyelidEyelid “closed” when solenoid powered onCounterweight opens eyelidBattery powered with on/off switchSolenoidCounterweightPower SupplyOpenClosed1 cm 1.1cm
10. PneumaticEyelid rotates on central axisInflated balloon catheter rotates eyelidManually powered with an air bulbCounterweight opens eyelid OpenClosed 1.1cm1 cmBalloon
11. Design MatrixCriteriaWeightPneumaticWind-UpPush SolenoidFeasibility1423Size1344Reproducible0.3333Safety0.7443Cost0.3432Risk of Failure0.6312Appearance0.3333TOTAL 14.3011.9012.45
12. Final DesignOpen failure modeEye glasses conceal air tubeOpenClosedClosing300 ms
13. Future WorkFinalize Retraction MechanismTestingLarge-scale proof of conceptForce-weight –retraction balanceFabricationMinimize catheter sizeMinimize deflation timeMaximize force exerted upon expansion
14. ReferencesM.Honda, A.Niimi, M.Ueda“New Orbital Prosthesis With a Blinking Eyelid: Report of a Case” Journal of Oral and Maxillofacial Surgery, Volume 57, Issue 6, Pages 730-733http://www.sciencedirect.com.ezproxy.library.wisc.edu/science?_ob=MImg&_imagekey=B6WKF-4CRR5T0-F0-1&_cdi=6905&_user=443835&_orig=search&_coverDate=06%2F30%2F1999&_sk=999429993&view=c&wchp=dGLzVlz-zSkzk&md5=3031db4f5557f4f0e54f082b1d6f4444&ie=/sdarticle.pdfhttp://www.freepatentsonline.com/20020049023.pdfhttp://www.medicalartprosthetics.com/content.php?page=galleries&gallery=orbital
15. Questions?