Neonatal Chest Compression Device Courtney Gallagher Jillian
Zeber Advisor: Dr. Walsh, Vanderbilt NICU
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Problem Statement When performed in conjunction with operations
of the neck and lower abdomen, there is limited space for manual
chest compressions. Manual chest compressions require both hands to
be wrapped around the chest. 2 occurrences at the Vanderbilt NICU
this past year.
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Project Goal Small, easy to setup device that will perform
automatic chest compressions on a 0-30 day old infant for use in
the OR during a simultaneous procedure.
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Performance Criteria Small but adjustable to fit the size of
the baby. Provide enough force for sufficient chest compressions to
reduce the width to one third, 2 to 3 cm. Apply the 11-12 lbs of
force directly below the nipples in the center of the chest.
Verified with bathroom scale and free weights. Maintain a rate of
80-100 compressions per minute for blood pumping. Simple and easy
to use by Dr. Walsh in the NICU
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Solution Proposal Pneumatic air cylinder Air compressor
Possible Modifications Inflatable balloon Backboard
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Device Components Pneumatic cylinder, air compressor, solenoid
valve, and a automatic controller Use 1.1 inch diameter plunger to
displace chest 2-3 cm. An adjustable elastic Velcro band To fit
different sized infants A rigid backboard To concentrate the force
on the sternum and not around the entire torso Wheel-up cart
supporting base structure and air compressor
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Factors Provide necessary but not excessive force (11-12 lbs =
5 kg) Materials that can be sterilized Comfortable Quick setup
Potentially portable Safety Adjustable
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Previous Work Researched existing adult compression devices
AutoPulse, Lucas, Thumper Established goals and criteria that must
be met Discussed with advisors Decided on a prototype design
Pneumatic cylinder Purchased materials to build initial prototype
Pneumatic cylinder and Air compressor Measured force required to
provide chest compressions
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Current Work Acquiring needed materials Building initial
prototype Testing basic setup on Isabel
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Future Work After testing, make modifications and re-test
Research solenoid valve and controllers Pre-set timers (automatic)
Foot pedal w/ exhaust (manual) Design Safe Make Demo Evaluate
effectiveness against traditional method
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Evaluation Isabel in the NICU Simulation Lab Responds like an
alive baby Provides vitals Can determine if chest compression are
adequate