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Emergency Ventilator

Emergency Ventilator. Joshua Gess Jimmy Grotting Tim Weaver Ryan Winter Whitt Israel Advisor: Dr. Paul King April 11, 2005. The average human has a total lung capacity (TLC) of 4-6 liters The average tidal volume is only 0.5 liters

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Emergency Ventilator

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  1. Emergency Ventilator Joshua Gess Jimmy Grotting Tim Weaver Ryan Winter Whitt Israel Advisor: Dr. Paul King April 11, 2005

  2. The average human has a total lung capacity (TLC) of 4-6 liters • The average tidal volume is only 0.5 liters • Even at vital capacity, about 25% of the lung volume remains (residual volume) • Residual volume can allow chemicals or other foreign substances to remain in the lung Lung Volume During Emergency Respiration

  3. How High Frequency Ventilation Promotes Fluidic Mixing • Shorter bursts of air create a turbulent atmosphere • Fresh air mixes with residual volume • Clean air reaches alveoli more quickly • Allows for oxygen to be more efficiently absorbed • Waste gases are removed more efficiently

  4. IPV vs. Bulk-Flow Ventilation Figure 1: Bulk flow ventilation Figure 2: Percussive ventilation

  5. Design Progression • Ambu Bag – too much attention to device and not enough to patient • SureVent – looked to improve this existing system • High Frequency Jet Ventilation – revolutionary form of ventilation • Incorporation into new idea-(piston actuator, reverse whistle, acoustics, pneumatic actuator, fans) • Final Design: Solenoid Valve

  6. Design Schematic

  7. MicroKing Air Control Valve • 3-Way inline valve for rapid control actuating • 4.8 Watt Solenoid for 12 VDC • Operating pressure: .42 psi • Operating frequency: 0 – 15 Hz • Price: $25.00

  8. Function Generator • MFJ Portable Function Generator for $80.00 • Simple square waves with variable frequency • Oscillator circuit consisting of step function generator

  9. Prototype Testing • Pressure Transducer • PX24A • Arrives 4/11 or 4/12 • LabVIEW data acquisition software • Simple data recording • FFT

  10. Testing Apparatus

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