Safe Basal


Device: MiniMed™ 770G Insulin Pump

Safe Basal is an automatic function within SmartGuard™ Auto Mode and cannot be modified. The Safe Basal rate is determined by the Auto Mode feature based on your insulin delivery history. It lets you have time to perform additional actions required to ensure Auto Mode remains active.

Safe Basal delivers insulin at a constant rate to cover your basal needs. Safe Basal does not adjust insulin delivery based on your current sensor glucose (SG) values. After 90 minutes in Safe Basal, if the condition that caused the pump to transition into Safe Basal is not resolved, the pump enters Manual Mode.

When the pump is in Safe Basal, the Auto Mode shield appears gray with a white outline.

Safe Basal

Several conditions can cause a transition into Safe Basal. The following table describes these conditions and the actions you must take to resume Auto Basal delivery.

Condition What to Do
Auto Mode has been at the minimum delivery limit for 2 1/2 hours.
  • Enter a BG.
  • An Auto Mode min delivery alert occurs if the Auto Mode BG alert is enabled.
Auto Mode has been at the maximum delivery limit for 4 hours.
  • Enter a BG.
  • An Auto Mode max delivery alert occurs if the Auto Mode BG alert is enabled.
Your sensor might be reading lower values than your actual glucose values.
  • Enter a BG.
  • A BG required alert occurs if the Auto Mode BG alert is enabled.
An entered BG is 35% or more different than your current SG value.
  • Enter a BG.
  • A BG required or Cal required for Auto Mode alert occurs if the Auto Mode BG alert is enabled.
No SG data has been received for more than 5 minutes.
  • If SG data is not available due to a signal interference, three dashes appear on the screen in place of the SG data.
  • If your pump has not received SG data for 30 minutes or more, a Lost sensor signal alert occurs.
  • If the SG data is not available because you need to calibrate the sensor again, calibration has expired, or when the system detects another calibration is required to improve sensor performance, you receive a Calibrate now alert. Calibrate your sensor.
  • The Auto Mode BG alert does not apply to this condition.

When you change your sensor, your pump switches to Safe Basal for up to 90 minutes. The pump tells you to calibrate and enter a BG for Auto Mode.