Medtronic Simplera Sync
Tandem t:slim X2
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 t:slim X2 is rechargeable, has a touch screen, and can be updated on a home computer.
*Control IQ+ Technology now available for ages 2+
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.
Controller
Compatible smartphone can be used to view and control insulin delivery using the t:connect app.
Infusion Set
An infusion set contains the thin plastic tubing that delivers insulin from the pump to the body.
Cartridge
Tubed insulin pumps contain a plastic reservoir that is manually filled with insulin and locked into the pump.
Pump
Touch screen pump connects tubing to a small 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
Smallest tubed pump. Modern interface resembles a smartphone but tubing may be visible.
Affordability and Access
$$$$
Coverage depends on region and insurance; supplied via DME or specialty pharmacy.
$$$$
Widely covered for insulin-dependent type 1 and 2. Supplies and pump provided by DME. Price range; $0-$4000 to start and $0-$300/Month.
Data Monitoring Options
Yes
Data streams directly to the pump; users and clinicians can view trends and logs via Medtronic’s platforms.
Yes
Tandem t:slim mobile app wirelessly uploads cloud-based Tandem Source web application delivering access to recent patient data.
Data View Options
Yes
Data view directly on your connected pump or smart device.
Yes
Data is viewed on the pump's main screen and/or on a smartphone with the Tandem t:slim 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 Days
Pump can be worn for up to 72 hours and works between 40°F - 99°F
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.
Exercise mode. Optional settings for exercise to adjust treatment ranges for activity with the press of a button. Pump is not waterproof.
Avoiding Highs and Lows
SmartGuard closed-loop. Pump adjustments use sensor data continuously to reduce highs and lows.
Precise dosing. Pumps allow different amounts of basal insulin at different times of day and very precise dosing.
Comfort
Low profile. No overtape needed and one-hand insertion.
Smallest tubed pump. Small patch called an infusion set consists of a complete tubing system that attaches to the body. Tubed pumps have the most infusion sets to pick from.
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.
Customizable dosing. Bolus calculator available to help figure out doses. Offers smallest increments of basal insulin delivery. Basal in 0.001 increments, bolus in 0.01 increments.
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).
Rechargeable. Pump has a touch screen display and rechargeable battery.
Fewer Fingersticks
Calibration is optional. Perfect if you like having that choice.
Frequent finger-sticks are required.
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. Smallest tubed pump with visible tubing. Ability to bolus directly on a compatible smartphone. Can be clipped to clothing or placed in a pocket to be discreet when needed. Touchscreen of pump looks like normal tech device.