Guardian™ Connect - Potential Issue with Transmitter Battery Life

Guardian™ Connect - Potential Issue with Transmitter Battery Life

URGENT MEDICAL DEVICE SAFETY NOTIFICATION

Guardian Connect - Potential Issue with Transmitter Battery Life

Download Guardian Connect - Potential Issue with Transmitter Battery Life – Notification letter Download >

We are making you aware of a potential issue with the transmitter battery life of your Guardian Connect Continuous Glucose Monitoring (CGM) system. If you are using an Apple device with iOS version 12 or higher, we advise that you update to the latest version (3.2.4) of the Guardian Connect app on your iPhone as soon as possible.

Explanation of the Issue

We recently became aware that customers using the Guardian Connect app on an iPhone, iPad or iPod Touch with iOS software version 12, 12.1, or 12.2 are likely to experience a shortened transmitter battery life (approximately 4-5 days instead of the normal 7 days or more) after a full charge. The iOS12 update created more frequent Bluetooth® connections that drain the transmitter battery faster than under the previous iOS versions. Rest assured, this does not impact sensor performance and your CGM system will work as expected, aside from having a shorter transmitter battery life. Your system will continue to provide you with correct information about battery life and alerts related to low battery (as displayed below). While we have received reports from customers about the shorter battery duration of the transmitter we have not received any reports of injury.

Action Required

  1. Update your Guardian Connect app now to the latest version (v3.2.4) located on the App Store®. This update will return the Guardian Connect transmitter to the same battery performance experienced before the iOS 12, 12.1, and 12.2 updates.
  2. If you are not using iOS 12 or higher on your Apple device today, we would still recommend updating to the latest version of the Guardian Connect app.

We apologize for any inconvenience this may cause. We are committed to patient safety and appreciate your prompt attention to this matter. If you continue to experience issues or have questions, please contact our 24-Hour Technical Support Team at 1-800-646-4633.


Sincerely

James Dabbs
Vice President, Quality Assurance
Medtronic Diabetes


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