Guardian® REAL-Time System


Guardian Tutorial screenshot

Guardian REAL-time System:

Whether you're curious about the basics or an experienced user looking for tips, you'll find it all here.

Try It

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Note:

Customers outside the U.S., please contact your local Medtronic Diabetes representative to receive a user guide appropriate for your area.


Glucose Sensor Calibration Tips

  • Calibrate your glucose sensor when glucose is stable, such as after waking up in the morning, before meals or before bedtime.
  • Do NOT calibrate when your glucose level may be changing rapidly, such as within the first hour after eating, or when "Rapid Change" arrows appear on your insulin pump or Personal CGM monitor.
  • Therapy adjustments should be based on fingerstick measurements, not on glucose sensor values.

Glucose Sensor Insertion and Use Tips

Glucose Sensor Site Selection

  • Avoid very lean or very fatty areas.
  • Avoid scar tissue and choose an area at least 2 inches from an infusion set site (for insulin pump users).
  • Rotate sites to avoid irritation or hardening of your skin. Do not choose sites that are prone to movement or would be under tight clothing.

Loading the Sen-serter® Insertion Device

  • Place the glucose sensor firmly in the Sen-serter device so that the black o-rings on the glucose sensor are NOT visible.

Removing the Sensor Tape

  • Place your fingers on the white tape, and push the Sen-serter carrier down. You will hear a click when it is in place.
  • Hold the white tape down and remove the clear tape.

Glucose Sensor Insertion

  • Hold the skin taut at the glucose sensor site.
  • Do not pinch the skin, as this may displace the glucose sensor.
  • Insert the glucose sensor at a 60° angle by gently tilting the Sen-serter forward.

Needle Removal

  • Hold the base of the glucose sensor firmly.
  • Pull the needle out smoothly, in one motion, and at the same angle that the glucose sensor was inserted.

Bleeding

  • If bleeding occurs, apply pressure with a clean gauze.
  • Remove the glucose sensor if bleeding persists for more than three (3) minutes.
  • If blood is present on the glucose sensor (black o-rings), clean with an alcohol wipe and allow to dry.

Connect MiniLink® Transmitter to the Glucose Sensor

  • Make sure the glucose sensor has been inserted for a minimum of 5 to 10 minutes BEFORE connecting to the MiniLink transmitter to allow the glucose sensor to fully "wet" underneath your skin.
  • Remove the MiniLink transmitter from the Charger. Wait one (1) minute before connecting the MiniLink transmitter to the glucose sensor after removing it from the charger.
  • Connect the MiniLink transmitter to the glucose sensor in a smooth, straight motion. Listen for a click to confirm a tight connection between the glucose sensor and MiniLink transmitter.

ONE Minute Rule

  • Always wait ONE MINUTE after disconnecting the MiniLink transmitter from a charger, glucose sensor or tester before you connect the MiniLink transmitter to a glucose sensor or tester.
  • The MiniLink transmitter may be connected to a charger at any time. However, once the MiniLink transmitter is connected to a charger, the MiniLink transmitter must remain in the charger for ONE MINUTE before disconnecting.

Taping

An adhesive dressing should be applied over the glucose sensor/transmitter site to ensure:

  • The glucose sensor remains completely inserted underneath the skin.
  • The sensor/transmitter connection remains secure and free of movement.

MiniLink Transmitter Green Flash

The MiniLink transmitter will begin flashing green AFTER you connect it to the glucose sensor. This could take up to 20 seconds.

The green flash indicates:

  • The glucose sensor has been adequately "wetted."
  • The MiniLink transmitter has enough power to last three (3) days.

If there is no green flash:

  • Confirm that the glucose sensor has been inserted for a minimum of 5 to 10 minutes.
  • Check your glucose sensor site to make sure the glucose sensor has not pulled out.
  • Check that the MiniLink transmitter remains securely attached to the glucose sensor.
  • Make sure the MiniLink transmitter is fully charged.