Accessible Home Vital Signs Monitoring System

Kristyn Eilertsen Adam Goodale Stephen KepperSunil Narayan Stacey Tarver

Group 22BME 272

Advised by Paul King,Ph.D and John Enderle Ph.D

National Student Design Competition Rehabilitation Engineering Research Center on

Accessible Medical Instrumentation $2000 reimbursement for design costs 3 possible design projects Design Project: Accessible Home Vital Signs

Monitoring System Acceptance through letter of intent- design

approach, completion date, contact information

Problem Statement

Multimodal home vital signs monitorBody temperatureWeightBlood pressureHeart rateRespiration rateBlood oxygen level

Patient Challenges

Must accommodate patients with varying disabilitiesBlind Deaf ElderlyBed riddenMotor movement challengedLittle technology experience

Requirements

User friendly Cost effective Visual usage Audio usage Large responsive

user interface

Compact Aesthetically pleasing Fast response Telemedicine

Limitations

Unable to acquire weight information on bed ridden patients

Cannot cost over $2000 (project fund) Must be completed by end of Spring

semester

Changing the Face of Healthcare

Number of hospital emergency departments cut by 14% in 2005

ER visits reached a record high of 114 million, consisting primarily of the uninsured and elderly

US 65-and-over population has risen 9.6% over that same time period

Why target the elderly?

ER visits by Americans age 65 and over rose 26% in 2003

Medicaid patients were four times more likely to seek treament in an ER than those with private health insurance

Nursing home residents age 65-74 were five times more likely to visit the ER than non institutionalized seniors

Components Vital sign devices:

Force plate (scale) Breathing rate sensor Pulse oximeter Blood pressure sensor Temperature probe Computer

Blood pressure

Temperature

Oximeter

Breathing rate

Weight scale

Heart rate

Estimated Prices Desktop computer ………………..$ 330.00 Heart rate sensor …………………$ 114.00 Blood pressure sensor …………..$ 99.00 Breathing rate sensor………........$ 137.00 Weight scale …………………….. $ 199.00 Temperature probe ………………$ 29.00 Pulse oximeter ……………………$ 165.00 Data analysis software …………..$ FREE Go Link software …………………$ 59.00

TOTAL: $1132.00

Current Status

Set up account with Janiece Harrison Submitted purchasing order forms for sensors and

computer Decided against voice activation software

because blind patients have live in assistance Determining compatibility of foreign pulse

oximeter with software 0 – 5 Volt input requirement Calibration requirement

Software Compatibilities Matlab

Developing Matlab based program Graphic User Interface (GUI) Visual Directions Voice Response

Verbal directions to user Verbal communication of results

Ability to call C++ Create DLL file

Vernier and C++ GoLink! code written in C++ Filter code to specified needs

Data Acquisition

C++ program communicates with sensor communicates through USB sets sampling rate, collects

and stores data Sends results to Matlab

Displays to patient

Stores data in file Saved as date and time

Telemedicine

Email ResultsUses C++ to create email with attached

resultsUses stored patient and doctor email in setup

screenAbility to retrieve and send past resultsSecurity protected through username and

password

Conclusion

In the near Future….Continue formatting C++ and Matlab code Integrate sensorsTest sensor quality

Compare to actual medical devicesCreate stand alone computer program