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Winter 2023 MAE 156B Senior Design Project
University of California, San Diego
Sponsor: Dr. Henry Lee, M.D., Jacobs Medical Center
An Overview
An Overview
Nearly 0.1-0.3% of newborns may need some form of respiratory aid. In the most severe cases, this takes the form of Cardiopulmonary Resuscitation. Due to the fact that medical personnel must apply CPR quickly using little else than their fingers, fatigue can deteriorate the quality of these compressions.
To address this, Dr. Henry Lee of the Jacobs Medical Center chose to sponsor the development of a device that will apply the functions in lieu of a human. This will ensure that the compressions are of a consistent and reliable nature, easily synchronized with the applied breaths from partial pressure ventilation (PPV).
Design Requirements
Design Requirements
Compression Requirements
90 compressions / min.
Compression depth of 1⁄3 the Anterior-Posterior diameter
Pausing 0.5s after every 3rd compression for Positive Pressure Ventilation.
Be able to run autonomously for 20 min continuously.
Safety Requirements
The stroke size and compression applicator’s height relative to bed must be adjustable.
Some sort of emergency safety switch.
Size Requirements
Must not obstruct NICU personnel.
Allow Nurse's visibility of the neonate’s chest rise & fall during compressions.
Must be able to be easily removed should compressions not be required
Final Design
Final Design
Component Breakdown
Actuator:
FESTO Linear Actuator
Depth & compression frequency control
HMI (Human Machine Interface) for speed control
Actuator Shaft not back-drivable while powered
Portable Stand:
Easily deployable, removable
Rigid foundation for compressions
Secure manual adjustment
Stable mounting surface for Electronics Enclosures
Transition Device
Smooth transition between manual and powered compressions
Silicone Molded Applicator tip
Records depth of manual compressions
Transition Device Breakdown
Manual compressions applied by pressing applicator wings
During manual compressions, utilizes spring force of baby to return to “zero”
Shaft locks applicator when powered compressions begin
Allows for continuous transition between human and machine
Final Design Review
Final Design Review
Neonatal Resuscitation Final Design Review.pdfPage updated
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