European, Open-label, Prospective, Multinational, Multicenter Study in Adult Subjects With Type 1 or Type 2 Diabetes Previously on MDI or CSII Therapy. Subjects Home Setting is Considered Routine Practice.

A new insulin pump, the Accu-Chek® Insight insulin pump, will be used by all subjects enrolled in this study. The usability of the Accu-Chek® Insight insulin pump for the intended use has already been investigated in a Human Factor study. The study subjects may encounter the following potential risks of CSII therapy while participating in the study: Possible hypoglycemia; Possible hyperglycemia which might progress to ketosis and DKA; Infusion site reactions (bleeding, bruising, discomfort, pruritus, pain, plaster reactions, inflammation, infection etc.)