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Manual Ventilator Project

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Manual Ventilator Project

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    1. Manual Ventilator Project Peter Ma, Richard Long, Matt Valaskey, Jimmy Fong Client: Michael K. Abernethy, MD, FACEP Advisor: Paul Thompson, PhD

    3. Overview The product function is to modify the disposable manual ventilator (AMBU bag) to allow hands-free operation. This could be operated by foot or legs with the user in a sitting position.

    4. Medflight Overview Have provided emergency care and transport for victims of crashes and disasters for over 20 years A specially trained team of physicians, nurses, pilots, and dispatchers Fleet of three helicopters that work in a 225 mile radius of Madison Respond to emergencies within minutes of receiving notice of a crash Carry in flight emergency equipment such as: ventilator, blood pressure and heart monitors, IV equipment, defibrillators and pacemaker equipment, emergency medicine and drugs.

    5. Problem Statement Traditionally, AMBU bags operate as an inflatable bag by hand. To allow for the AMBU bag to be operated using legs or feet, an extension piece needs to reach the patient. Failure of the extension piece to adequately replicate the respiratory function of the traditional AMBU bag would result in the patients suffering from oxygen deprivation. Product should be able to tolerate traditional helicopter conditions.

    6. Existing Manual Ventilation Devices

    7. Design Proposals Foot Bellow Model Leg-Pump Model Hinge Model

    8. Leg-Pump Model Belt Attachment Belt + AMBU bag Mounted to the thigh Move the thighs to squeeze the bag Extension circuit from the bag to the valve

    9. Advantages and Disadvantages of the Leg-Pump Model Advantages: Easy to install No assembly time needed Cost effective Respiration requirements met because of original AMBU bag

    10. Leg-Pump Model

    11. Hinge Model Squeezed by the movement of hinge Hinge opens and closes by a foot pedal controlled motor Rests on patient

    12. Advantages and Disadvantages of the Hinge Model

    13. Hinge Model

    14. Foot Bellow Model Utilizes foot bellows pump Ventilator circuit extension to patient PEEP exhaust valve at the distal end of circuit Oxygen reservoir at the pump/tubing joint

    15. Advantages and Disadvantages of the Foot Bellow Model Advantages Intuitive pumping motion No assembly time Low cost Efficient air flow Permanent design

    17. Decision Matrix Design Feasibility Cost Ease of Use in Medflight Conditions Reliability Expected Performance Output Comprehensive Design -Is the design practical and meet requirements

    18. Design Matrix (Continued)

    19. Additional Information Possible additional features of prototype: -Bag Reservoir -stores air to avoid bag from emptying -Positive-End Excretory Pressure (PEEP) Valve -controls end excretory pressure in lungs -Exhaust Valve -typical of most ventilators, releases carbon dioxide

    20. Future Work

    21. References Michael K. Abernethy, MD, FACEP UW Medflight Flight Physician AMBU www.ambu.com Instrumentation Industries, Inc. www.iierespiratory.com Manual Ventilation www.wikipedia.com

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