Disclosed are ambulatory insulin infusion systems, including: a) an administration module (2.5, 2.8) for subcutaneous insulin administration, the administration module (2.5, 2.8) being designed to subcutaneously administer insulin according to a basal profile continuously and additional a bolus on demand, the bolus having a bolus amount, b) a data collection module (1.1, 1.2, 1.3, 1.6, 1.7) for collecting data relevant for the bolus amount, the data collection module (1.1, 1.2, 1.3, 1.6, 1.7) being operatively coupled to the administration module (2.5, 2.8), In accordance with the invention, the system further includes a delay module (2.7), the delay module (2.7) being designed to trigger a start of the bolus administration a therapeutically significant delay interval after the collection of the data.
