B26: Accessible Home Vital Signs Monitoring System

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B26 Accessible Home Vital Signs Monitoring
System

• Steve Bushman Daniel Lomo-TetteyAndrew Okabe

Dr. Jack Winters Professor of Biomedical
Engineering
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Project Objective Statement

• Design a low cost, easy to use, accessible,
  mobile, remote home vital signs monitoring system
  by May 4th, with a budget for purchases of 2,000
  We Did It!

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Background Problem

• Healthcare professionals
• gt monitor patients
• Patients
• gt stay in their homes
• Insurance companies, patients
• gt reduce costs

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Background Contest Rules

• RERC AMI 2006-2007 National Student Design
  Competition
• Affordable, easy-to-use, and integrated system
• Collect and transmit 4-6 vital signs

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Vitals to Measure

• Heart rate
• Blood pressure
• Temperature
• Respiration rate
• Weight
• SpO2

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Background Contest Clients

• Young and old
• Familiar or unfamiliar with technology
• Limited or no vision
• Limited or no hearing
• Limited dexterity / mobility

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Background Customer Needs

• Integrated System
• Affordable
• Multi-modal wide range of patients
• Reliable and accurate

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Background Customer Needs

• Mobile
• Attractive
• Comfortable
• Easy to use

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Background Existing Devices
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System Overview
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Bluetooth

• Wireless
• Replace Wires
• Every year, more devices

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Computer - PDA

• Chosen concept
• PDA with Bluetooth and WiFi
• Touch screen
• Microphone
• Speaker
• Internet via WiFi
• gt Health Care Professional

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PDA Home Page
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Weight

• Bluetooth Scale
• Automatic
• Any scale manually entered data

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Blood Pressure

• Bluetooth BP Cuff
• Automatic
• Any BP cuff manually entered data

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Temperature

• No known Bluetooth thermometer
• Use thermometer best suited for individual
  Manually enter data
• Speaking Thermometer gt poor vision
• Large thermometer
• Cheap thermometer

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Enter Temperature
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SpO2

• Automatic measurement
• Placed on finger
• Available attachments for ear, etc.
• Long term attachments for comfort available

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Heart Rate

• Given with SpO2
• Can be manually taken
• Like RR

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Respiration Rate

• Future Get respiration band Bluesense working
• Now PDA assists user in taking RR

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Health Care Providers Interface

• Just a prototype
• Could be an entire senior design project itself
• Future integrate with existing software?

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Accessibility

• One handed operation
• Large visuals, slight use of color
• Bluetooth, automatic where possible
• Multiple modes depending on user
• PDA talks to user
• Future - Voice recognition

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Belt attachment

• Can also be worn in pocket or set on table

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Human Subject Testing

• Simulated disabilities
• Validated specs and customer needs
• Helped refine the software

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Human Subject Test Results
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Meets customer needs?

• Usable by people with many disabilities Pilot
  data is encouraging!
• More needed to assist those with blindness
  voice recognition?
• Mobile YES!
• Measures Vitals YES!
• 4 automatically (BP, HR, SpO2, Weight)
• 1 assisted (RR)
• 1 manual (Temp)

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Meets customer needs?

• Attractive? Better than status quo
• Need more work for 3rd party device
• Easy to use? Better than status quo
• Automatic or simple operation
• Meets Specs? Yes!
• Too many to list here

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Economics Prototype Cost

• Budget 2,000
• Total Parts Cost 1,950 Ii
• Core device - 400
• Ultimate device - 1500

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Economics Cost

• Estimated prototype labor costs 12,000
• Prototype gt Production 30,000
• Total 44,000
• Manufacturing cost per unit 400 - 1,500

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Economics Projected Sales

• Potential users gt 3,500,000
• Estimated price to user gt 750-4,000
• Possible projected sales (10 years) 30,000,000

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Conclusion

• It works!
• Mobile / Accessible / Integrated
• Meets customer needs
• Revolution of current devices to better meet
  customer needs
• Economical 4001,500

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Conclusion

• Complex (many parts to get working) and open
  ended problem
• Only 3 people but managed to get a lot working!
• A lot of work to integrate with many
• 3rd party devices

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QA

• ?