AGIL
Active Glucose/InsuLin Control System
Design Team:
Daniel Hewlett
Michael Wires
Concept:
Provide diabetics with continuous blood glucose
monitoring and insulin delivery in a single device,
controlled wirelessly through a PocketPC interface.
Background: Diabetes
Glucose (Sugar) is where the body gets energy.
Insulin controls the amount of sugar in the bloodstream. Insulin
allows the body’s cells to absorb glucose, lowering glucose
levels in the blood.
Diabetes: The body cannot control glucose levels correctly,
often because it cannot produce insulin. So, diabetics are
dependant on various methods of:


Blood glucose monitoring
Insulin delivery
Today, these two tasks must be done separately.
Our Solution
AGIL combines the best methods (according to studies) of:


blood glucose monitoring: Continuous glucose monitoring
insulin delivery: Insulin pump
Motivation:
By consulting with users, we found that the tasks they want to
perform divide sharply into two categories: quick, efficient,
very common tasks, and quite infrequent, but useful, tasks.
Features:

Blood glucose levels constantly and immediately visible

Stylus-Free operation (one finger)

Automatic behind-the-scenes record-keeping

Visualization of data through color charts and graphs

Communication for emergencies and regular consultation
Required Components
Insulin Pump
A programmable device that can deliver insulin continuously
and in discrete doses. The insulin pump used in the AGIL
system features:


Wireless Communication to PocketPC
Integrated Continuous Glucose Monitoring
PocketPC


.NET Compact Framework
Wireless Communications
• Internet
• Phone


Sound and Vibration
Status Pod
Demo
Usability Study
Number of Subjects: 8
Age Range: 14 to 82 (Average: 44.75)
Reported PocketPC skills range: 1-5 (out of 7)
Included both Type 1 and Type 2 diabetics
Users performed 5 tasks using AGIL on a
PocketPC device, including:



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
Setup
Eat a meal
Change schedule
Send a graph
Respond to a notification
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Average Rating
Study Results
Usability Test Results
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Conclusions and Future Work
Lessons Learned

Final Design
• Users made few errors and found operation simple and
efficient
• Received well by target users, more than earlier designs
Future Work

Large Scale
• Longitudinal study w/ fully-functional system, to determine
effectiveness and identify further needs

Medium Scale
• Explore and evaluate other visualizations and direct
manipulation techniques

Small Scale
• Finish implementation – including customization
Questions?