Non-Invasive Neonatal Vital Acquisition Unit Michael Bunalski, Biomedical Engineering Melissa Mastro, Biomedical Engineering Advisor: Dr. Brett BuSha, Biomedical Engineering

Background Premature infants  neonates born prior to 37 weeks of gestation Premature infants  neonates born prior to 37 weeks of gestation Most organ systems have not fully developed Most organ systems have not fully developed Apnea/problems breathing due to immature lungs or pneumonia Apnea/problems breathing due to immature lungs or pneumonia Lower muscle and activity compared to full-term infants Lower muscle and activity compared to full-term infants Problems feeding due to difficulty sucking or coordinating swallowing and breathing Problems feeding due to difficulty sucking or coordinating swallowing and breathing Less body fat Less body fat Thin, smooth, shiny skin, which is often transparent (can see veins under skin) Thin, smooth, shiny skin, which is often transparent (can see veins under skin) 2

The Problem Infants will have contact electrodes across skin, Often causes Abrasions Tears Future scarring 3

Our Proposal We propose the development of a smart vest for neonates with non-adhesive electrodes to collect vital biosignals, eliminating the need for potentially skin damaging adhesive. We propose the development of a smart vest for neonates with non-adhesive electrodes to collect vital biosignals, eliminating the need for potentially skin damaging adhesive. 4

Design Considerations Over all construction Over all construction Full jacket design  small jacket Full jacket design  small jacket Cloth  neoprene Cloth  neoprene Back vs. Front ECG acquisition Back vs. Front ECG acquisition Lead/Pad Design Lead/Pad Design Gold Gold Non contact Non contact Self triangle design- non adhesive conductive gel Self triangle design- non adhesive conductive gel Conductive gel/pad replaceable vs. triangle unit Conductive gel/pad replaceable vs. triangle unit 5

Sensors Commonly Used Pulse Oximetry (SpO 2 ) Pulse Oximetry (SpO 2 ) Able to be placed around babies wrist ankle toe or hand Able to be placed around babies wrist ankle toe or hand Chosen wrist/hand for ease of wiring Chosen wrist/hand for ease of wiring Respiratory Rate Band Respiratory Rate Band Babies are stomach breathers therefore band goes around stomach Babies are stomach breathers therefore band goes around stomach Cannot be to tight to prevent or slow breathing Cannot be to tight to prevent or slow breathing Temperature sensor Not needed for most babies Slot will be made on the vest for sensor to go into 6

ECG RR SpO2 °F 7 Current Design

Testing and Validation Due to the nature of our project, all testing must occur on adults. The vest will be designed on the macro- scale and then scaled down to fit neonates between 500 g and 4.5 kg. 8

Social Impact Considerations Parents must find the device appealing to the eye Parents must find the device appealing to the eye With less wires the babies will look more “human” With less wires the babies will look more “human” Hospitals with a agenda in personal comfort will look a lot better to society Hospitals with a agenda in personal comfort will look a lot better to society Compilation of wire Compilation of wire Many wires that will be coming off/one bulky wire Many wires that will be coming off/one bulky wire Wireless would greatly increase overall aesthetics and mobility Wireless would greatly increase overall aesthetics and mobility 9

Health and Safety Considerations Vest cannot cause any stress on breathing Vest cannot cause any stress on breathing Cannot cause any allergic reactions Cannot cause any allergic reactions No abrasions caused No abrasions caused Vest needs to be small Vest needs to be small Nurses and physician need to see as much of the baby as possible Nurses and physician need to see as much of the baby as possible Stomach much be visible to diagnose gastro issues Stomach much be visible to diagnose gastro issues 10

Other Considerations Economic Economic similar materials to that which is being used currently similar materials to that which is being used currently addition of silicone to normally used product addition of silicone to normally used product Sustainability Sustainability silicone is a durable substance silicone is a durable substance neoprene durable substance-machine washable neoprene durable substance-machine washable Manufacturability Manufacturability silicone is easily mass produced silicone is easily mass produced molded very well molded very well 11

Plans for Our Year 12 Fall 2011

Plans for This Semester 13 This Week!

14 Materials Estimated Price/Unit Estimated # Estimated Price Neoprene Sheet 0.12" (3mm) x 51" x 83" $ Neoprene Sheet 0.25" (6mm) x 51" x 83" $ Disposable Skin Temperature Probe $0.001 Ribbon Wire- 5ft $2.502$5.00 Silicone Casting Kit $ Silicone $ Electrical Components for Pulse Oximetry Sensor $ Velcro- 3/4"x30" $2.852$5.70 Ag Ag/Cl Electrode components ??? Respiratory Band ??? Estimated Total Price $ Total Budget$ Difference$42.72 Budget Summar y

Thank you. 15 Are there any questions?