Did a little digging and this is what I came up with, a new tubing connector and reservoir with “advanced materials” that keeps insulin stable.
“The innovative design of the Medtronic Extended infusion set leverages advanced materials that help reduce insulin preservative loss and maintains insulin flow and stability. The new tubing connector improves physical and chemical stability of insulin, reliability of infusion site performance, and reduces the risk of infusion set occlusion. The adhesive patch has an adhesive layer that extends wear time and provides comfort and durability for up to 7 days. In addition to the new infusion set, the Medtronic Extended reservoir is also tested and approved to keep insulin stable and safely used for up to 7 days.”