Guardian 4
Introduction
The Guardian 4 transmitter (MMT-7841) with Bluetooth® wireless technology is a component of the
continuous glucose monitoring (CGM) system. The transmitter collects and calculates sensor data and
sends the data to a compatible display device.
Indications for use
The Guardian 4 transmitter (MMT-7841) is intended to monitor glucose levels for the management of
diabetes.
Contraindications
No contraindications are associated with Guardian 4 transmitter use.
User Safety
Warnings
• Always refer to the Guardian 4 Sensor User Guide for all precautions, warnings, and instructions
related to the sensor. Not referring to the Guardian 4 Sensor User Guide can result in serious injury
or damage to the sensor.
• Do not allow children to put small parts in their mouth. This product may pose a choking hazard
that can result in serious injury or death.
• Do not use the Guardian 4 transmitter if you are pregnant or critically ill. Since the transmitter has
not been studied in these populations, the impact of medications common to these conditions
on transmitter performance is unknown and the transmitter may be inaccurate in these
populations.
• Do not change or modify the device unless expressly approved by Medtronic Diabetes. Modifying
the device can cause serious injury, interfere with the ability to operate the device, and void the
warranty.
• Do not expose the transmitter to Magnetic Resonance Imaging (MRI) equipment, diathermy
devices, or other devices that generate strong magnetic fields (for example x-ray, CT scan or other
types of radiation). Exposure to a strong magnetic field has not been evaluated and can cause the
device to malfunction, result in serious injury, or be unsafe. If the transmitter is exposed to a strong
magnetic field, discontinue use and contact 24-Hour Technical Support for further assistance.
• Do not use the tester if it comes in contact with blood. Touching blood can cause infection.
• Bleeding may occur after inserting the sensor. Always make sure that the site is not bleeding before
connecting the transmitter to the sensor. Blood can get into the transmitter connector and
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