This research study examines the effect of hyaluronidase on the length of time of insulin infusion set wear. The aim of the study is to improve the length of time that an infusion set can be worn by infusing hyaluronidase directly into the insulin infusion site. The investigators will also assess the accuracy of the Dexcom G4 Platinum (G4P) sensors with extended sensor wear beyond the 7 day FDA approved time frame.