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Endotracheal Tube Cuff Pressure Indicator

Endotracheal Tube Cuff Pressure Indicator. Client: Dr. Lester Proctor Advisor: Kristyn S. Masters . Team V-Tec Michael Alexander - Team Leader Claire Edlebeck - BWIG Samantha Bergh - Communications Tyler Lark - BSAC Lucas Vitzthum - Graphics. Outline. Problem Statement Background

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Endotracheal Tube Cuff Pressure Indicator

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  1. Endotracheal Tube Cuff Pressure Indicator Client: Dr. Lester Proctor Advisor: Kristyn S. Masters Team V-Tec Michael Alexander - Team Leader Claire Edlebeck - BWIG Samantha Bergh - Communications Tyler Lark - BSAC Lucas Vitzthum - Graphics

  2. Outline • Problem Statement • Background • Existing Devices • Design Constraints • Design Ideas • Design Matrix • Future Work

  3. Problem Statement • Endotracheal Tubes • Cuff Pressure • Optimal Pressure Range • Use in pediatrics

  4. Background Information • 20,000 Operations Annually • 25% Children • 75% Require Endotracheal Tube • Inflatable Cuff for Adults • Advantages • Tight Seal • Prevents Aspiration • Disadvantages • Ischemia due to excess pressure • Risk Increased in Children

  5. Current Devices • Patents • Several • None marketed • Not similar to our designs • On the Market • Hi-Lo® Tracheal Tube with Lanz® Pressure- Regulating Valve

  6. Design Constraints • Pressure-Regulation • Performance level • Disposability • MRI/CT Compatibility

  7. Electrical Design Solution • Uses electrical pressure transducer • Measures pressure inside cuff • Translates different pressures into distinct voltages • Voltage powers the corresponding LEDs Source: omega.com, Tim Shedd

  8. Electrical Design (cont.) • Pros • Highly Accurate, Precise • Visually exact • Cons • Expensive ($85.00/unit) • May interfere with medical equipment • Not MRI compatible

  9. Mechanical Design • Pressure gauge attached near pilot balloon • Pressure acts on piston inside device • Piston increasingly protrudes indicating pressure

  10. Mechanical Design (cont.) • Pros • Economic • Versatile • Cons • Difficult to calibrate • Requires MRI compatible form of resistance

  11. Design 3: Relief Valve • Additional valve and tube attached to pilot balloon • Standard pressure relief valve • Predictably fails at 25 cm H2O pressure • Clamp allows for override

  12. Relief Valve: Pros & Cons • Pros • Reliably releases pressure • Safe • Relatively inexpensive to manufacture • Cons • MRI Interference • Precision manufacturing required • No longer embodies our clients preference

  13. Design Matrix

  14. Future Work DESIGN CREATE PROTOTYPE TESTING • Specify dimensions of prototype • MRI compatibility • Discuss with client • Obtain necessary skills in machine shop • Investigate means of fabrication • Molding • Machining • Rapid Prototyping • Accuracy of Pressure Reading • Constant Rate of Pressure Release • Repeatability and Reproducibility • Labview

  15. Any Questions?

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