The glucose sensor is a tiny electrode that sits under the skin in your interstitial fluid (which is where cells get oxygen and nutrients, including glucose) and measures glucose levels. Glucose sensors are easily inserted using an automatic insertion device. Like many types of infusion sets, a needle is used to introduce the glucose sensor but is then removed leaving just the tiny flexible electrode just under the skin. The glucose sensor is then connected either to a transmitter or recorder so the readings from the glucose sensor can either be transmitted to your insulin pump or monitor, or recorded for downloading to software once removed.

The CGM feature of the MiniMed Paradigm® Veo™ System does not replace fingerstick measurements. You still need to use your blood glucose meter to confirm a continuous glucose monitoring (CGM) reading before treating or to calibrate the CGM system.

High alarm thresholds can be set as high as 400mg/dL (or 22.2 mmol/L) and the minimum low alarm threshold can be set as low as 40mg/dL (or 2.2 mmol/L). High and low threshold ranges can be customised by the user. You should discuss your personal threshold levels and alert settings with your healthcare provider.  The high and low glucose alarms have to be at least 10 mg/dL (or .6 mmol/L) apart. If you set your high glucose limit at 180 mg/dL (or 10 mmol/L), then you cannot set your low glucose limit greater than 170 mg/dL (or 9.4 mmol/L). Conversely, if you set your low glucose limit at 50 mg/dL (or 2.8 mmol/L) then you cannot set your high limit lower than 60 mg/dL (or 3.4 mmol/L).

Each glucose sensor can be worn for up to 6 days at a time.  Glucose sensors have a 6 month expiration date from the time they are manufactured. An expiration date will appear on the outside of the glucose sensor box and on each individual glucose sensor package.  Note - glucose sensors used for the iPro system should only be worn for up to 6 days at a time.

The transmitter has a self-contained battery, which can be recharged using the charger supplied, but cannot be changed.  As it has a self-contained battery, it should be disposed of, or recycled, in accordance with local governing ordinances and recycling guidelines.

The transmitter has a life of approximately 9 months under anticipated continuous-use conditions.

Our latest sensors do not need to be refrigerated if kept at temperatures ranging from 2° to 27° C (or 36° to 80° F). This temperature labeling applies to all manufactured glucose sensors over the last year. To identify these glucose sensors, look for a temperature graphic on the outside of the individual glucose sensor package, or on the side of the glucose sensor box. Glucose sensors are still being shipped in a protective foam container containing chilled gel packs designed to protect glucose sensors from temperature outside of the 2° to 27° C range during shipment.  Glucose sensors must not be frozen.  If you choose to keep your sensors in the refrigerator anyway, allow approximately 15 minutes for the sensor to warm up to room temperature before you use it.

cement of the glucose sensor may be affected by clothing, comfort, individual preference or experience. In the case of people using insulin, users may want to avoid recent infusion sites. While many people choose the abdominal stomach area, an alternative location is on the upper buttocks. This location is less likely to be bumped or affected by clothing at the waistline.
See the Enlite User guide for recommended locations of insertion for most reliable accuracy

When the transmitter reaches a low battery condition, it will notify the insulin pump or monitor. It will display a "LOW TRANSMTR" notification. From the first "LOW TRANSMTR" notification of a low battery, you have about 5 days of continuous use before the battery is completely depleted. You will then receive a "BAD TRANSMTR" notice which means the transmitter battery has been depleated.
You can also visit our Alerts & Alarms section for more information on these topics

The transmitter and the insulin pump must be within 6 feet (approximately 2 meters) of each other for wireless transmission to occur.

It is best to calibrate when your blood glucose is not changing rapidly. We recommend that you calibrate on a routine schedule, for instance when you first wake up, before a meal, or before your bedtime snack. Try to find a time during the day when your blood sugar is stable. Make sure you do not calibrate when your blood sugar is changing rapidly, like within the first hour after a meal.  It is important to calibrate when glucose values are not changing rapidly (for example glucose is more stable before a meal. After a meal, it is more likely that glucose will change rapidly to adjust for the food being digested).

The MiniLink transmitter uses about 1,000 times less radio frequency (RF) power than a mobile phone uses. If you think about it, when you’re talking on your mobile phone, you’re receiving a constant stream of RF transmission. In contrast, our transmitter sends very small transmission “bursts.” So, you don’t need to worry about the RF from our transmitter harming you.

The transmitter begins transmitting data as soon as it is connected with the glucose sensor. The transmitter also transmits data when the CGM is off on the insulin pump. Therefore, you should disconnect the glucose sensor from the transmitter. The glucose sensor can remain inserted.

Calibrating your system is like setting the time on your watch and adjusting it occasionally to make sure its still the correct time. To initialise a glucose sensor, you need to enter a meter reading to give the system a starting point. And, just as a watch needs to be adjusted occasionally, so does a glucose sensor. You need to enter at least 2 meter readings a day - once every 12 hours. This aligns the glucose sensor with the meter so that continuous glucose monitoring (CGM) readings are representative of your blood glucose level.

Calibration is only necessary when you are using the CGM function of your insulin pump.  The MiniMed Paradigm® Veo™ System must be calibrated a minimum of twice a day (once every 12 hours) by entering a fingerstick value into the insulin pump. However for best results, you can calibrate 3 to 4 times per day, with the calibrations spread throughout the day at periods when glucose is not changing rapidly, this will allow more accurate detection at all levels.

It is best to calibrate when your blood glucose is not changing rapidly. We recommend that you calibrate on a routine schedule, for instance when you first wake up, before a meal, or before your bedtime snack. Try to find a time during the day when your blood sugar is stable. Make sure you do not calibrate when your blood sugar is changing rapidly, like within the first hour after a meal.  It is important to calibrate when glucose values are not changing rapidly (for example glucose is more stable before a meal. After a meal, it is more likely that glucose will change rapidly to adjust for the food being digested).

This is quite normal. BG Meters take glucose readings from Plasma blood and Sensors take readings from Interstitial Fluid and the physiological difference has what is called "lag time". This can be a difference of as much as 10-15mins from that of the blood glucose (finger stick readings).  Sensor readings may never actually quite reach the top of the highs or bottom of the lows of your blood glucose due to the lag time between blood glucose and sensor glucose. i.e. the blood glucose may have reached a high and then quickly begin to fall and the sensor glucose will be following this in relation to the calibration factor applied to it and thus begin to fall with the blood glucose in order to track as closely as possible to blood glucose readings.
When using your technology, concentrate on trends and patterns instead of individual values.