6 Transesophageal Transducer
Instructions for Use 6 - 27
Temperature Controls and Safeguards (V7M)
WARNING: Disconnect the transducer if the system displays the message indicating that the
maximum thermal limit is exceeded. (The transducer temperature is 43°C or higher.) Failure to
disconnect a transesophageal transducer that has exceeded the maximum thermal limit can
burn the patient's esophagus. Reconnect the transducer after the transducer has cooled. Or,
use a different transducer.
Because some concerns have been raised about possible thermal injury to the esophagus due
to the local buildup of heat during transesophageal echocardiography, the transesophageal
transducer incorporates a shut-off mechanism in the interest of patient safety in the unlikely
event overheating should occur. For additional information on temperature limitation, refer to
EN 60601-2-37 and IEC 60601-2-37.
A temperature sensor mounted in the distal tip of the transducer monitors the temperature of
the scanning array and displays the temperature on the screen.
 When the temperature is 37°C or below, the temperature indicator displays <37°C.
 When the temperature is above 37°C, the system displays the actual temperature. When
the temperature reaches 40°C, the temperature indicator is highlighted.
Lens Temp: 40°C
Example of temperature indicator displayed above scan plan icon.
 When the temperature reaches 41°C and you choose to override the software and
continue to scan the patient, OVERRIDE displays next to the scan plane icon.
OVERRIDE
Example of temperature indicator displayed above scan plan icon.
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