Patent ID: 8734383

Claim:
A drug delivery system for administration of insulin to a body of a patient, the system comprising: a processor-based device implementing at least a residual insulin (RI) determination unit, the RI determination unit configured to: receive one or more bolus records, each of the bolus records being associated with a respective bolus dose delivered to the patient and includes at least an associated bolus dose value, an associated time representative of the time the respective bolus dose was delivered to the patient, and an associated duration value representative of dose-dependent duration of therapeutic effectiveness of the associated dose value; and determine a residual insulin in the patient's body based on the associated bolus dose value, the associated time, and the associated duration value associated with each of the one or more bolus records; and a pump to controllably dispense the insulin from a reservoir to the body of the patient based on the residual insulin determined by the RI determination unit.