Overview

The third iteration of the t:connect mobile app system functions as the primary controller for Mobi, the next generation Tandem insulin pump that’s smaller and has no screen of its own. As the only interface for the pump, the app must convey all therapy information, allow users to initiate control commands, provide options to adjust every setting, and handle error cases & disconnections in a complex, wireless system.

Process

To create the app experience, I had to become an expert in the technical details of the pump hardware, collaborating with multiple teams of engineers. As I designed app features, I worked with the cross-functional team to conduct a series of 15+ usability studies to test all of the pump’s functionality, refining features and retesting as needed to ensure the experience would work for users. The medical device iteration process is lengthy and requires extensive reviews and documentation to ensure we’re developing a device that is safe & effective. I delivered an extensive suite of design specifications, which were included in the team’s regulatory submission of the Mobi pump system.

Impact

After years of design & development the Mobi app was submitted for regulatory review and the FDA had zero questions or concerns about the user experience I had designed. The app team is currently working toward commercialization of the system to launch the new Mobi pump.