Medtronic Simplera Sync
Tandem Mobi
Summary
This is a disposable, all-in-one CGM sensor integrated with Medtronic’s pump systems (e.g., MiniMed 780G). Typical wear time is 6 days, plus a 24-hour “grace period.” No routine fingersticks are required when the device is in closed-loop/SmartGuard mode.
FDA approved for ages 7+ on the back of the upper arm
MARD of ~9%
The Tandem Mobi is the smallest durable automated insulin delivery system available in the U.S. that can be fully controlled by a mobile device. The pump is equipped with an on-pump button for users to bolus insulin directly from the pump if they don’t want to do it from their phone. This system is combined with the Dexcom continuous glucose monitor (CGM) to automatically adjust insulin delivery in response to glucose trends.
*Compatiblilty with Dexcom G7 now available
Components
Sensor
Sensor uses a thin, flexible filament beneath the skin to continuously measure glucose every 5 minutes. Simple, one-step applicator makes insertion fast and easy.
Infusion Set
An infusion set contains the thin plastic tubing that delivers insulin from the pump to the body.
Controller
Mobi pump receives CGM readings to automatically adjust basal insulin delivery via an infusion set. Compatible smartphone can be used to view and control insulin delivery.
Sensor
Automatic applicator inserts sensor just under the surface of the skin and can be applied to many places on the body.
Pump
Small pump connects tubing to a 5 inch tubing patch called an infusion set that attaches to the body.
Device Details
Overview
Disposable, all-in-one CGM sensor integrated with Medtronic’s pump systems
Tandem Mobi is the smallest insulin delivery system to be fully controlled by a smartphone.
Affordability and Access
$$$$
Coverage depends on region and insurance; supplied via DME or specialty pharmacy.
$$$$
Pump coverage is not yet available. Sensor is widely covered and provided by DME and/or Pharmacy. Sensor price range; $0-$500/month.
Data Monitoring Options
Yes
Data streams directly to the pump; users and clinicians can view trends and logs via Medtronic’s platforms.
Yes
The t:connect mobile app for the t:slim X2 pump wirelessly uploads pump and CGM data to the cloud-based t:connect web application.
Data View Options
Yes
Data view directly on your connected pump or smart device.
Yes
Data can be viewed directly on the pump screen or on the t:connect mobile app (available for both iOS and Android devices).
Duration and Storage
6 Days
Sensors last 6 days, with a 24-hour grace period, and need about 2 hours to warm up. They work between 41°F – 104°F and should be stored between 36°F – 86°F. They are usually shipped in 1–3 month supplies, which is about 5–15 sensors at a time.
3-day pump 10-day sensor
Sensors last 10 days and transmitters last 90 and work at 50ºF – 108ºF. Pump can be used for up to 72 hrs, battery life lasts five days with the use of CGM, and work between 40°F - 99°F. Pump supports wireless charging.
Vision / Auditory / Dexterity
YES text to speech
YES vibration alerts
Multiple sound sources
Moderate dexterity needed
NO text to speech
YES vibration alerts
A LOT of dexterity needed
Patient Considerations
Active Lifestyle
Compact and integrated. Reducing bulk; compatibility with daily activities depends on the adhesive and body movement. Water-resistant up to 8 feet (2.4 m) for 30 minutes.
Waterproof. The pump and CGM are waterproof and can be worn for most exercises.
Avoiding Highs and Lows
SmartGuard closed-loop. Pump adjustments use sensor data continuously to reduce highs and lows.
Auto basal and bolus insulin. Responds to CGM data by increasing or decreasing basal insulin delivery to prevent highs and lows and maintain a set blood glucose target.
Comfort
Low profile. No overtape needed and one-hand insertion.
Shorter tubing option. A shorter 5-inch tubing option for comfort on body.
Easy Insulin Dosing
SmartGuard technology. When paired with the MiniMed 780G, it automatically adjusts basal and gives correction boluses based on sensor readings. In manual mode, glucose values can guide dosing decisions, but fingersticks are required for confirmation.
Automatically adjusts dosing. Sensor integration allows the pump to automatically adjust insulin doses. More customizable dosing than pens or syringes. Manual bolus button is available for quick dosing without a phone.
Easy to Use
All-in-one. Eliminates the need for a separate transmitter, simplifying sensor changes (although more frequent due to the 6-day wear).
Easy Dosing. Full control from a smartphone, with the option to manually bolus if needed.
Fewer Fingersticks
Calibration is optional. Perfect if you like having that choice.
Factory-calibrated sensor. Fingersticks needed for backup only.
Privacy
Small and integrated, but visible on the back of the arm. No separate transmitter reduces the number of visible parts. Alerts and alarms can be adjusted for discretion.
Discreet. Ability to check blood sugar on phone or watch. Ability to bolus on a compatible smartphone. Pump has tubing but can be clipped to clothing or attached to local area with an armband or adhesive sleeve to be discreet when needed. Dexcom's built-in hypoglycemia safety alarm alerts users when glucose is below 55 mg/dl and is always on.