Technical Manual

Precautionary Measures
19
7 Precautionary Measures
The CardioMessenger is a medical product and therefore complies with the strict requirements for the
development, manufacturing, and testing of medical devices.
Statutory regulations for electrical devices in hospitals require that the CardioMessenger and its
accessories not be used in areas defined as patient environment (e.g., in the operating room).
Please observe the following safety-relevant notes:
• Do not place the CardioMessenger next to a television set, microwave oven, or a similar source of
electromagnetic disturbance.
You may hear noises typical of cellular phones if you place the CardioMessenger too close to a
radio alarm or a television set, for example.
• Protect the CardioMessenger from direct contact with water. For example, wear it under your coat
or keep it in a bag when it rains.
• Do not carry the CardioMessenger inside the breast pocket of your shirt or jacket as the distance
from here to the implanted device could be less than 15 cm.
• Do not bring the CardioMessenger into the vicinity of fire.
• Do not turn on the CardioMessenger if it has recently been in a cold environment. Let it warm up
slowly to room temperature, since the resulting condensed water may harm the electronic
circuitry.
• Do not operate the CardioMessenger in areas where cellular phones are prohibited for safety
reasons (for example, in certain areas of the hospital or in airplanes).
• Make sure that the distance to the device is less than 2 m (6 feet), so that regular data
transmission from the implanted device to the CardioMessenger at night is assured.
Protect the CardioMessenger and the power supply brick from:
• Water and high humidity
• Temperatures above 40°C (104°F) (e.g., direct sunlight, strong halogen spotlights, fire)
• Temperatures below negative 5°C (23°F; CardioMessenger) and below 0°C (32°F; power supply
brick)
• Solvents, acids, detergents, and lyes
• Pressure below 700hPa (corresponding to altitudes above 3000m, approx. 10,000 feet)
• Pressure above 1060hPa (corresponding to altitudes below sea level)
• Violent shocks or other strong mechanical influences
• Intense light sources (direct sunlight, strong halogen spotlights)