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AGIL. A ctive G lucose/ I nsu L in 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.
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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
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: • Setup • Eat a meal • Change schedule • Send a graph • Respond to a notification
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