Neonatal Chest Compression Device Courtney Gallagher Jillian Zeber Advisor: Dr. Walsh, Vanderbilt NICU

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.

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.

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. Apply the force directly below the nipples. Maintain a rate of compressions per minute.

Solution Proposals Pneumatic pump device similar to a blood pressure cuff. Problem: constricts the entire chest; not a concentrated force Manual pulley-belt mechanism Problem: inefficient to setup in a time sensitive situation Motorized automatic device Problem: physician does not have control over force applied Best proposed solution and approved by Dr. Walsh

Device Components A step motor Will pull and release the belt in intervals An adjustable belt To fit different sized infants A rigid backboard To concentrate the force on the sternum and not around the entire torso

Factors Provide necessary but not excessive force Materials that can be sterilized Comfortable Quick setup Potentially portable

Previous Work Researched existing adult compression devices AutoPulse Established goals and criteria that must be met Decided on a design direction Step motor

Current Work Researching step motors How they work Cost Roughly calculate applied torque which corresponds to the necessary applied force Researching materials for backboard and straps

Future Work Acquire all components Build device Wire and provide a power source Test on Isabelle

Evaluation Isabelle in the NICU Simulation Lab Responds like an alive baby Provides vitals Can determine if chest compression are adequate

References pump/autopulse/ pump/autopulse/