Tandem Predictive Low Glucose Suspend Inpatient Feasibility Study

This protocol is designed to test the functionality of a predictive low glucose suspend system under supervised conditions where basal insulin rates are manually increased until a system generated suspension occurs. The study will collect data that will be used for planning a pivotal study, and the study data are intended to be used to support a Premarket Approval (PMA) application.

Inclusion criteria

• Diagnosis of type 1 diabetes requiring insulin therapy for at least 12 months
• Insulin pump therapy for at least 6 months
• Age ≥18.0 years
• Subject demonstrates stable insulin regimen including basal rates, insulin sensitivity factor and insulin:carbohydrate ratio for at least 3 months

Exclusion criteria

• Pregnant (female subjects must have negative urine or serum pregnancy screening test)
• Severe hypoglycemia resulting in seizure or loss of consciousness in the month prior to enrollment
• Diabetic ketoacidosis in the month prior to enrollment
• A current condition that would prevent the use of a CGM sensor or insulin pump, or in the judgment of the investigator is a contraindication to study participation
• Use of acetaminophen during study participation
• Current use of any medication intended to lower glucose other than insulin including naturaceuticals, oral or non-insulin injectable medications