Non-Invasive Neonatal Vital Acquisition Unit

Michael Bunalski, Biomedical Engineering

Melissa Mastro, Biomedical Engineering

Advisor: Dr. Brett BuSha, Biomedical Engineering

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Background

Premature infants neonates born prior to 37 weeks of gestation

Most organ systems have not fully developed Apnea/problems breathing due to immature lungs or

pneumonia Lower muscle and activity compared to full-term infants Problems feeding due to difficulty sucking or

coordinating swallowing and breathing Less body fat Thin, smooth, shiny skin, which is often transparent (can

see veins under skin)

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The Problem•Infants will have contact electrodes across skin, •Often causes

•Abrasions•Tears•Future scarring

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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.

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Design Considerations

Over all construction Full jacket design small jacket Cloth neoprene Back vs. Front ECG acquisition

Lead/Pad Design Gold Non contact Self triangle design- non adhesive conductive

gel Conductive gel/pad replaceable vs. triangle unit

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Sensors Commonly Used

Pulse Oximetry (SpO2) Able to be placed around

babies wrist ankle toe or hand

Chosen wrist/hand for ease of wiring

Respiratory Rate Band Babies are stomach

breathers therefore band goes around stomach

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

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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.

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Social Impact Considerations

Parents must find the device appealing to the eye With less wires the babies will look more

“human” Hospitals with a agenda in personal comfort will

look a lot better to society Compilation of wire

Many wires that will be coming off/one bulky wire Wireless would greatly increase overall aesthetics

and mobility

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Health and Safety Considerations

Vest cannot cause any stress on breathing

Cannot cause any allergic reactionsNo abrasions caused Vest needs to be small

Nurses and physician need to see as much of the baby as possible

Stomach much be visible to diagnose gastro issues

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Other Considerations

Economic similar materials to that which is being used

currently addition of silicone to normally used product

Sustainability silicone is a durable substance neoprene durable substance-machine washable

Manufacturability silicone is easily mass produced molded very well

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Plans for Our Year

Fall 2011

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Plans for This Semester

This Week!

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MaterialsEstimate

d Price/Unit

Estimated #

Estimated Price

Neoprene Sheet 0.12" (3mm) x

51" x 83"$20.80 1 $20.80

Neoprene Sheet 0.25" (6mm) x

51" x 83"$32.80 1 $32.80

Disposable Skin Temperature

Probe$0.00 1 $0.00

Ribbon Wire- 5ft $2.50 2 $5.00Silicone Casting

Kit $52.49 1 $52.49Silicone $25.49 1 $25.49

Electrical Components for Pulse Oximetry

Sensor$15.00 1 $15.00

Velcro- 3/4"x30" $2.85 2 $5.70Ag Ag/Cl Electrode

components??? ??? ???

Respiratory Band ??? ??? ???

Estimated Total Price $157.28

Total Budget $200.00

Difference $42.72

Budget Summary

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Thank you.

Are there any questions?