Technical data
1590 99 002_1 - 21. February 2011 11
3.3 Technical description
Power supply unit
The integrated power supply units transform the line voltage in rectified low voltage for the
electrical supply of the device.
Control
The output parameters and the safety systems of the device are monitored and controlled by a
microcontrol system.
Operating modes
The device operates in both single pulse mode and continuous mode.
The device is designed for continuous operation in the specified ambient conditions.
If during this mode the temperature has increased to such a value that operations cannot be
performed any longer, the device will automatically switch to a cooling mode till a normal operating
temperature is reached
Operation
The device is operated via a touchscreen. The data are output by an LCD with plain-text user
guidance. Depending on the operating mode different parameters such as fluence, pulse duration,
pulse rate and others can be set as described in the Operation chapter.
In addition to the parameters selected, other data such as the laser mode (STANDBY or READY), the
handpiece used and, if necessary, error plain-text messages are displayed.
The device contains a database where the user can store treatment reports with the parameters
typically used for various types of treatment.
Cooling
The internal cooling system is required to prevent the component groups from being overheated.
The lost heat is dissipated to the ambience via a water-air heat exchanger. A pump circulates the
coolant through the component groups and the heat exchanger. In addition to this, integrated
temperature and flow sensors provide safe operation.
The device cooling is ensured by the indoor air. External cooling water is not required
To maintain the cooling effect, the device should only be operated in the specified ambient
conditions. The ambient air should be dustless. At the openings provided for cooling the device, a
minimum distance should be kept to air-tight objects (e.g. the wall of the room). (See chapter
).
Laser
The MeDioStar laser is a pulsed high power diode laser (laser class 4).
The emitted wavelength is in the near infrared (NIR) of between 800 nm and 950 nm. The spectral
distribution is optimized in dependence on the use of the different handpieces.
The laser beam emission is activated by pressing the foot switch.
Skin Cooling
Next to the laser tip is a metal probe at the handpiece, which is cooled by an integrated Peltier ele-
ment. Together with the procedure described in chapter it is guaranteed that the epi-
dermis is cold before the laser pulse impinges. The temperature of the probe is monitored.
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