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Two Dimensional Physical Model of Human Neck and Airway Based Upon In Vivo Measurements

Outline. Long Term ObjectivesWhat is Laryngoscopy?Why is the study of Laryngoscopy important?Summer ObjectiveCollecting data in the operating roomTwo-Dimensional model of neckProcess of making two-dimensional modelThe next step. Long Term Objectives. Find a correct way to perform Laryngoscopy

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Two Dimensional Physical Model of Human Neck and Airway Based Upon In Vivo Measurements

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    2. Outline Long Term Objectives What is Laryngoscopy? Why is the study of Laryngoscopy important? Summer Objective Collecting data in the operating room Two-Dimensional model of neck Process of making two-dimensional model The next step

    3. Long Term Objectives Find a correct way to perform Laryngoscopy by showing that there is consistency among experts. Specify correct methods to perform laryngoscopy and provide better training for novices. Incorporate Virtual Reality with visual, force and auditory feedback to training simulators. Design Computer Controlled Mannequins that can modify patient responses.

    4. What is Laryngoscopy? Laryngoscopy is a medical procedure performed to secure the passage of air into the lungs during surgeries or emergency situations. A rigid laryngoscope serves to make way for the tube that goes through the vocal chords into the trachea to provide oxygen.

    5. Laryngoscopy, cont. Key anatomical features Thyroid Cartilage Cricoid Cartilage Epiglottic Cartilage Arytenoids Hyoid Bone

    6. Why is the study of Laryngoscopy important? Experts succeed in 99.9% of airway intubations and novices can have failure rates of up to 30%. If novices fail during the procedure, they will cause harm to patient.

    7. Importance of Laryngoscopy, cont. By quantifying this data we will then be able to apply it to provide better training for novices. For two-dimensional model, data collected will give stiffness values of the neck measured in vivo.

    8. Summer Objective Two-dimensional model that will model the neck from an engineering point of view.

    9. Collecting Data in the Operating Room Laryngoscope is instrumented with force and motion sensors to define its trajectory. Mini-birds are placed on patient’s forehead, chin, and neck. Points and profiles of the patient are gathered.

    10. Collecting Data, cont. Laryngoscopy is performed twice or thrice for comparison. Data is collected with the MATLAB program. Trajectories of laryngoscope are plotted comparing the different trials.

    11. Two-Dimensional Model Correctly model the motion of the anatomical features that lie on the anterior side of the neck. Correctly model the sagittal motion of the head and the jaw. Model the geometric relationships between human anatomy and laryngoscope during laryngoscopy.

    12. Process of making two-dimensional model Determine key anatomical features that are anterior to the neck. Scan images into R2VToolkit. Transfer images to AutoCAD program.

    13. Process, cont. Transfer drawings to the LaserCAMM software. Cut out prototype with acrylic in the LaserCAMM. Connect all pieces to demonstrate actual motion of the neck anatomy.*

    14. The Next Step Gather stiffness values of the neck. Find different materials to represent the muscles and ligaments of the neck. Information from the two-dimensional model will help in providing important information of the neck anatomy to construct better mannequins. Therefore, long term objective of providing better training for novices in laryngoscopy, and in the future, other medical procedures can be achieved.

    15. Acknowledgements Nathan Delson, Ph.D. Randolph Hastings, M.D., Ph.D. Matthew Weinger, M.D. Nada Koussa, B.S., Katie Bottum, Deepa Ravindranath, Christopher Rom, M.D., Chris Cassidy STARS Program UC LEADS Program at University of California, San Diego and University of California, Davis

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