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Wireless Apnea Response System University of Hartford Design Project Analysis

This project focused on developing a wireless apnea response system for premature infants, addressing the issue of breathing cessation. The current treatment methods and hospital monitoring systems were evaluated for their disadvantages. The project involved creating a functional design using various methodologies like Gantt charts and Failure Mode and Effect Analysis (DFMEA). Customer preferences were considered, such as safety, dependability, and ease of use for parents, doctors, and nurses. The proposed system featured wireless technology, sensors like EKG and thoracic impedance, and automated stimulation in case of apnea events. Future design plans included enhancing wireless capabilities, reducing manufacturing costs, and ensuring availability of replacement parts in local stores.

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Wireless Apnea Response System University of Hartford Design Project Analysis

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  1. Apnea Response System University of Hartford Senior Design Project M. Shalane Regan Diane Eager Michael Porter 4/10/2007

  2. Apnea • Greek word for “without breath” • The stop of respiration for approximately 10-20 seconds • 30% to 50% of all premature infants • 90% of those that are under 28 weeks of gestation have apnea.

  3. Apnea (continued) • Central apnea (apnea prematurity) • Obstructive apnea • Mixed Apnea

  4. Current Treatment • Stimulation from nurse/ Dr/ parent when breathing stops • Continuous Monitoring • Disadvantages: • Too big in size • Many false positives • Disruptive

  5. Current Hospital Monitor • Pulse Ox • EKG • Thoracic Impedance • Nasal Air Flow

  6. Apnea Event in an Infant http://www.empiricaltechnologies.com/page19.html

  7. Methods • Gantt Chart • Functional Decomposition • Quality Function Deployment • Morphological Chart • Failure Mode and Effect Analysis of Design (DFMEA)

  8. Preferences and Customer Requirements • Parent • Safety • Dependability • Easy of use • Doctor • Size • Dependability • Few to no false positives • Nurse • Portable • Compatible with current computers • Rotating screen

  9. Quality Function Deployment

  10. QFD (continued) • Program Capabilities • Operating system • Baseline settings • Battery Life • Long life • Alarm

  11. QFD (continued)

  12. QFD (continued) • Sensors • EKG, Thoracic Impedance • Size • Alarm • Display on Monitor • Easy to use • Digital • Legible

  13. Morphological Chart

  14. Current Design • Wireless system • Wireless patient box • Three electrodes • Vibration stimulator wired to patient box • Station box • Computer reads signals and determines whether infant needs vibration stimulation

  15. Circuit Board Bottom Layer PCB Top Layer PCB

  16. Upon Completion • Working prototype • Different alarms for... • Apnea event • Elevated Heart Rate • Low battery • Disconnect alarm • Automated stimulation • Continuous monitoring and recording of heart rate, oxygen saturation, thoracic impedance, and number of episodes

  17. Future Design • Completely wireless System • Eliminate electrodes using cell phone technology • Keep manufacturing costs to a minimum • Replacement parts can be sold in local stores • Wireless battery technology • Adjustable components for each individual

  18. Questions ?

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